APEX Monthly – June 2013

by TRSinc on June 18, 2013




Pond scum… a smelly situation    

A look at what’s floating in ponds, lakes and lagoons, and what RYDALL WO can do to help.

“I’m pond scum. Well, lower actually. I’m like the fungus that feeds on pond scum.”

– excerpt from My Best Friend’s Wedding (1997)

Whether you are referring to a person or the stuff floating in a body of water, pond scum has


a negative connotation. But what is it and why does it look and smell nasty?

The gradual decomposition of organic matter as it is deposited in bodies of water causes pollution. The amount of pollution a given body of water can sustain is determined by the amount of oxygen it contains. It is this oxygen that allows naturally occurring microorganisms to oxidize the organic matter completing its decomposition and transforming it into carbon dioxide and products such as lignin and humin, which settle harmlessly as sediment.

When the water is so stagnant that the microorganisms use up all of the available oxygen, serious pollution occurs. This situation is worsened by the increased mortality of fish and other water life, which cannot survive under these conditions.

In the final stages of pollution, the sulfide formed due to the lack of oxygen, develops into a state of extremely bad odor which is toxic to most living organisms.

Lakes, ponds and lagoons (both natural and artificial) usually have polluted zones near the bottom, where free sulfide is present. Under normal circumstances, there is another layer just above this zone, which contains sulfide oxidizing bacteria, disposing of the sulfide.

The depth of this particular layer usually depends on how clear the water is, since many sulfide oxidizing bacteria are photo-autotroph, they require light in order to grow.

Above this second layer, fish, algae and plankton grow, and the whole body of water is a stable system with the sulfur cycle progressing quietly in its lower reaches

Problems typically occur when artificial pollution such as sewage or industrial wastes are fed into bodies of water overwhelming the natural balance, which causes the anaerobic zone to spread until it comprises the whole water system.

RYDALL WO to the rescue

With the use of RYDALL WO Water Optimizer, these catastrophic conditions can be halted and corrected. RYDALL WO’s ion binding capacity, in tandem with the product’s cleansing and stimulating attributes, establishes the correct conditions to restore the natural balance.

Introducing RYDALL WO into the system increases the amount of dissolved oxygen in the lake, pond, or lagoon, making the water clearer, therefore allowing more light to flow into the lower layers.

Additionally, RYDALL WO promotes the digestion of the solids and stimulates the sulfide oxidizing bacteria. With the combination of these factors the bacteria become more efficient, the sulfur cycle is restored and the natural balance returns to the body of water.

RYDALL WO also eliminates odors and toxicity further by restricting the growth of the toxic sulfide produced by the sulfate reducing bacteria.

As water pollution is a continuous problem, any body of water can be continually treated with RYDALL WO; however, once the initial clean-up is finished, and the body of water is stabilized, a small maintenance dose of RYDALL WO will be sufficient to maintain the body of water in optimal condition.

RYDALL WO & golf courses

When applied in the regular irrigation protocols, RYDALL WO Water Optimizer will:

  • Eliminate the black plug layers.
  • Reduce the need of dethatching.
  • Clean the soil of the chemical crust.
  • Reduce the need of fertilizers.
  • Reduce water consumption.
  • Improve the quality of the turf grass, due to increased bioactivity of the natural bacteria, which convert the thatch layer to compost.

RYDALL WO tackles water hazard on 13th hole









A Virginia golf course was experiencing a strong stench emanating from a multi-tiered pond that surrounded the normally picturesque par 3, 13th hole. The murky pond and unpleasant odor, which stemmed from rotting algae and putrid organic matter, became a distraction to golfers, as well as staff.


  • 2 1/2 gallons of RYDALL WO were sprayed over the top-level of the pond (water from the top level drains into the lower ponds) four times over a period of 30 days


  • 24 hours after the first application, the repugnant odor was completely gone and the staff even saw an improvement in the clarity of the water!
  • After all four applications, more than 80% of the algae disappeared and water clarity improved from 3 inches to 4 feet!


Where there’s water, there’s RYDLYME Biodegradable Descaler…

•  evaporative condensers   •  air compressors

•  cooling towers                    •  heat exchangers

•  chillers                                 •  dehumidification systems

•  boilers                                 •  and more!

Where there’s wastewater, there’s RYDALL WO Water Optimizer…

•  pre-treatment                                 •  sludge tanks/lagoons

Where there’s odor, there’s RYDALL OE Odor Eliminator…

•  grease interceptors                        •  garbage/waste receptacles

•  composting operations     •  wash down areas

Where there’s grease, dirt and grime, there’s RYDALL MP Multi Purpose Degreaser and RYDALL CC Coil Cleaner…

•  evaporator coils                             • finned air cooling/heating equipment

•  work stations/areas/surfaces         • and more!

All our products are biodegradable, safe and non-toxic. RYDLYME, RYDALL MP and RYDALL CC are NSF-certified. RYDLYME is also NSF/ANSI Standard 60-certified as a cleaner for potable water systems.

No need to clean ‘God’s bathtub’

Imagine a lake that’s never been affected by climate change or any other man-made influences. Australian scientists say they have found just that—a remote lake whose crystal-clear waters seem to be in the same chemical state as they were about 7,500 years ago.

“It’s like God’s bathtub,” Dr. Cameron Barr told the Australian Associated Press of the body of water now named Blue Lake. “It is beautiful. It is absolutely beautiful.”

Barr and his team of researchers from the University of Adelaide say the lake is so pure that you can see more than 30 feet below the surface to its bottom.

“It appears that Blue Lake has been an important climate ‘refuge’ for the freshwater biota of the region, and is in the same condition now as it was 7,500 years ago,” Barr told the Australian Broadcasting Corporation.

Barr, who published his findings in the current issue of Freshwater Biology, said it’s the only such lake of its kind known to be in Australia.

To reach its conclusion, the team studied the lake’s water quality, fossil pollen and algae, which team members then compared with photos taken of nearby areas on the island over the past 117 years.

Several other nearby former lakes have dried up over the past 40 years due to climate change, Barr noted. In fact, Barr’s team was on North Stradbroke to study the effects of those former bodies of water when his team stumbled across the anomaly that is Blue Lake.

The lake’s water has remained unchanged, said Barr, because its waters drain into a nearby swamp and are replaced by an aquifer every 35 days or so.

“Because it’s constantly being updated it doesn’t suffer from the vagaries of the climate in so far as it doesn’t evaporate and become more saline,” Barr told the Australian Broadcasting Corporation. “It doesn’t fill up and become fresher. It just remains constant.”

Barr said something as small as sunscreen samples from tourists could alter the lake’s chemistry. The last thing we want to do is leave a ring around God’s bathtub.

Original article by By Eric Pfeiffer, Yahoo! News

What’s in the box??

To address an issue of dog owners not picking up after their four-legged loved ones at a dog park, a small town in Spain has decided to mail the discarded dog excrement back to the offending owners.

The Telegraph reports that the town council of Brunete, located about 20 miles from Madrid, is cracking down on the disrespectful dog owners. Volunteers approach dog owners who leave behind their pet’s meadow nuggets and strike up a conversation to find out the name of the dog in order to identify the owner from the registered pet database held in the town hall.

Once identified, the doo-doo is scooped up, placed in a box labeled with the town hall’s insignia and “Lost Property” and then delivered to the owner. After approximately 150 delivered boxes of canine logs, reports of abandoned surprises have declined by 70%.

Original article by The Telegraph


APEX Monthly – May 2013

by TRSinc on April 30, 2013





We all make decisions on a daily basis…


Fundamental decisions: “Should I go to work today?”

Semi-important decisions: “Can I make this yellow light?”

Trivial decisions: “Cheese and onions on my chili dog?”

Some decisions, though, are more ambiguous than others especially when it comes to descaling. If you need to remove mineral deposits from a heat exchanger, chiller or any equipment that comes in contact with water on a regular basis, there are several different methods from which to choose.


Is it best to go with cleaning it mechanically (e.g. tube cleaners, rod and brush) or chemically (e.g. acids)?


Here’s an overview of the most common cleaning methods, as well as the advantages and disadvantages of each:

Rod and brush

This method is pretty self-explanatory. You have a rigid or flexible rod with a wire or nylon brush on one end that is manually pushed through the tubes to scape off the deposits and then flushed out with water.


•  Simple process requiring minimal training

•  Fairly low cost of equipment (e.g. brushes)



•  Ineffective on dislodging hard or thick deposits; deposits left behind expedite additional fouling

•  Extended downtime; labor intensive

•  Brushes can get lodged inside tubes or cause breach

•  Generates waste that must be properly disposed

Water blasting & rotary/gun tube cleaners

High-pressure air and/or water propel a projectile, such as a metal or plastic scraper or brush, through each tube to dislodge deposits followed by a water flush. Rotary tube cleaners have a rotating flexible shaft encased in plastic that transports water to a cleaning tool located on the end allowing for cleaning and flushing in a single pass.


•  Each individual tube can quickly be cleaned

•  Effective at dislodging several types of deposits with moderate buildup

•  Flexible shaft can reach curves/bends


•  System, accessories and service are costly

•  Extended downtime; labor intensive; dismantling of equipment necessary to insert and recover projectiles

•  Projectiles and other cleaning tools may get lodged inside tubes

•  Ineffective on heavy deposits; any deposits left behind expedite additional fouling

•  Generates waste that must be properly disposed

•  Safety concern; potential for blow-back of projectile at operator under certain circumstances


Chemical cleaning

Chemicals, more specifically harsh acids, are circulated through equipment or systems dissolving deposits and then followed by a water flush. There are several types of acids on the market, including nitric, citric, phosphoric and hydrochloric, among others.


•  Effective on dissolving calcium carbonate deposits

•  Ability to reach all parts of equipment or systems

•  Can be more effective than mechanical methods


•  Highly corrosive to metal and other materials if not properly used

•  Elevated health and safety risks; must wear proper protective equipment to handle

•  Special permits may be required in some circumstances requiring additional time and money

•  Disposal can be costly and difficult due to hazardous nature and various disposal regulations


RYDLYME and how it evolved chemical cleaning

After reading the overview of chemical cleanings, you may think the disadvantages far outweigh the advantages. You also might come to the conclusion that we are a few cans short of a six-pack listing the disadvantages of chemical cleanings since we manufacture chemical cleaning products. But the fact of the matter is that not all chemicals are created equal.

Apex Engineering Products Corporation is not just a chemical manufacturer; we are a SAFE chemical manufacturer. Our flagship product RYDLYME, is a safe, biodegradable descaler that has all the advantages of a chemical cleaner with NONE of the disadvantages.

That’s what makes RYDLYME unique and why it has been around for more than 70 successful years. It transcends mechanical cleaning methods and takes chemical cleaning to another level. Here’s why…


•  Non-hazardous; non-toxic

•  Safe for personnel, equipment and environment

•  Can be held in open hand without injury

•  Biodegradable; dispose safely down normal plant sewers

•  Simple setup

•  Safe to use on a wide variety of metals and materials

•  Dissolves even the heaviest and hardest mineral deposits (e.g. iron oxide)

•  Use for clean-in-place or even online cleanings to prevent shutdown

•  Fast; minimal downtime

•  NSF/ANSI Standard 60-certified (cleaner for potable water systems)

The decision to clean your equipment may be a simple one, stemming from an immediate need (e.g. overheating heat exchanger), semi-immediate need (e.g. loss of efficiency, increased operating cost), or precautionary need (e.g. routine preventative maintenance).

Deciding on what method or products to use may prove to be a little more difficult, but it shouldn’t. Conduct some research into what might be best suited for your cleaning needs. Whether to go with a mechanical or chemical cleaning (something may be amiss if you end up doing both) may depend on budget, time, regulations, and a variety of other factors.

Though RYDLYME is the “World’s Leading Biodegradable Descaler”, find out for yourself that it’s true.

Contact us or go to our website at www.apexengineeringproducts.com to review our case studies and learn about how we’ve saved companies time and money. Also, contact us to find out who our representative is in your area. They will come out to your facility to discuss your needs, as well as provide a unique demo of the product.

The decision to use RYDLYME should be an easy one. Once that decision has been made, you just need to figure out what you want on your chili dog.


A 6-foot heat exchanger at a facility for a major gas supplier on the east coast was experiencing a 35°F increase in temperature at the water outlet, which resulted in high Delta Ts.


•  10 gallons of RYDLYME circulated for 4 hours via RYDLYME 10MDC pumping system.


•  There was a 30°F drop in temperature and the Delta T was returned to normal!

•  Client only had one comment, “Unbelievable.”

•  Client plans to use RYDLYME on two more heat exchangers and six aftercoolers, as well as the facility’s entire cooling loop system!

Descaling condensers

A 1,200-ton ammonia condenser at a turkey processing facility experienced scaling on the exterior of the tubes. This scaling caused significant issues with proper heat transfer and in turn, not cooling the ammonia inside the tubes for proper refrigeration temperatures.


•  660 gallons of RYDLYME circulated for 8 hours via inline pumps.


•  Scaling throughout the tubes was dissovled restoring proper heat transfer and refrigeration temperatures, which is critical for this and other food processing facilities.

•  The client purchased additional totes of RYDLYME to clean three more ammonia condensers.

•  RYDLYME has also been incorporated into the preventative maintenance guidelines of these units.



HydroKlean Before



Getting RYD of grease, grime and more!

RYDALL MP Multi Purpose Degreaser & RYDALL DD Definitive Degreaser Case Studies

An industrial cleaning contractor needed a degreaser/cleaner to cut through a significant buildup of oil, carbon black, grease and other contaminants on a Banbury mixer from a tire manufacturing facility.


•  5 gallons of RYDALL MP (50% solution) sprayed on entire unit, soaked for a few minutes and then powerwashed with water.


•  In only one hour, and simple soaking and rinse, the mixer was free of grease and other contaminants!

•  Client was extremely impressed and contractor was eager to use RYDALL MP for additional jobs!

A waste management company was experiencing problems thoroughly removing contaminants from plastic containers that were being cleaned to prepare them for recycling.


•  RYDALL MP diluted (10% solution) into the parts washer, heated to approximately 120°F and sprayed continuously onto the contaminated plastic followed by a water rinse.


•  Setup allowed good coverage on material passing through, cleaning each thoroughly for recycling.

•  RYDALL MP’s biodegradability was a big plus as it was easily and safely disposed.HydroKlean After

Heat exchangers (8-inch diameter, 6 feet long) at a Midwest glass manufacturer had 2 to 3 years worth of baked on oil and other contaminants that no other products were able to remove until they tried RYDALL DD.


•  RYDALL DD circulated via pump at 160°F for 4 hours.


•  Circulation at elevated temperatures removed the baked-on oil throughout the tubes, restoring proper flow and temperatures.

•  The client stated that he was, “Completely astounded by the results. [RYDALL] DD made those tubes look brand new!”



Filamentous bacteria: The culprit to foaming, bulking

Though a vital part of activated sludge processing, these bacteria can also be detrimental to the process if they get out of hand.


Filamentous bacteria is not the name of a punk rock band. They are bacteria that proliferate and play a vital role in the activated sludge process.


These long strands of bacteria interconnect with each other to form a mesh that is the key factor in flocculation or floc formation, which is the separation of a fluid or removal of sediment from a fluid. This mesh holds together the floc to form manageable portions for better settling, as well as snag smaller particles to help maintain acceptable effluent. Filamentous bacteria also do an exceptional job at removing BODs (biochemical oxygen demand).


FBThere are several types of filamentous bacteria, all of which can potentially cause problems. The key to successfully utilizing these bacteria is balance. Too few of them and the floc cannot properly form. Too many of them and the floc cannot properly settle. The overabundance of these bacteria also absorbs excessive amounts of organic material and inhibits the growth of more desirable organisms. The most common issues that stem from this are sludge bulking and foaming.


Sludge bulking occurs when the sludge becomes light, increases in volume and will not settle. Various floc particles begin interlocking (interfloc bridging) forming massive segments. Many times, these segments trap air bubbles, causing it to float on the surface (sludge scum or foam). The increased surface areas of these masses without an increase in mass to accommodate this condition interferes with the compaction and settling of the sludge resulting in bulking. This also results in a high Sludge Volume Index (standard measure of the physical characteristics of activated sludge solids), overload of the solids handling systems, additional haul-off costs, and degradation of quality effluent.


Sludge foaming is the result of the overabundance of specific types of filamentous bacteria, mainly Nocardia and to a lesser extent Microthrix parvicella. An opportunistic strand, Nocardia thrive when nutrients are low and the health of naturally occurring bacteria is vulnerable, as well as the presence of high levels of FOG (fats, oils, grease) among other factors.


Various types of foam can be produced during sludge processing, including at startup of activated sludge plants, which disappear once the process is established. Another type is brown, heavy foam that accumulates on the surface of the aeration tank and then transfers to the clarification tank where it can overflow if the foam gets too thick and won’t settle. The quality of the effluent discharged from the tank is also severely degraded with high levels of TSS (total suspended solids).


This brown foam occurs when undigested nutrients rise to the surface, but can be the result of a fault in the system and not necessarily Nocardia. A key indicator, though, of foam caused by Nocardia is low BOD levels.

Maintaining the desired levels of dissolved oxygen, F/M (low organic loading rate), nutrients and pH are all vital to an efficient and health activated sludge process. When issues (e.g. bulking) do occur, the addition of remedial methods such as chlorination or hydrogen peroxide can temporarily stabilize the filamentous bacteria population when properly applied.


Balance is the key to controlling filamentous bacteria, as well as the overall biological health of the system. Do your research on products and systems that may enhance your specific activated sludge processing system. Take extra caution with products that are designed to introduce a new biological component to your system. This can negatively affect the biological makeup of your system, creating a more substantial and costly problem.


RYDALL WO Water Optimizer naturally controls filamentous bacteria by supplying “good” bacteria with nutrients and vitamins to sustain a healthy and productive biological environment for activated sludge processing. Please visit www.apexengineeringproducts.com to learn more.



APEX Monthly – March 2013

by TRSinc on March 15, 2013

Gearing Up for the heat


Save money and chill out

Chiller diagram

With warner weather just around the corner, it’s not too soon to start prepping your cooling system for another active season. From cleaning debris from your coils to ensuring tubes are free of mineral deposits, maintaining your cooling equipment will not only protect you from the heat, but also your wallet.

If companies understood how much money they were losing due to efficiency loss and damage caused by water scale and other mineral deposits, a comprehensive preventative maintenance program would be implemented immediately.

Take for example, chillers. They not only represent a capital investment, but also a major contributor to energy costs. Maintaining clean chiller tubes is vital to reliable, efficient equipment operation. Water scale acts as an insulating barrier impeding efficient heat transfer effectively making the equipment work harder, in turn, consuming greater amounts of energy [click here to see the February 2013 edition of APEX Monthly for energy consumption/cost-savings chart].

Water scale can also create under-deposit corrosion of the tube alloy. Internal tube fouling can be detrimental to heat transfer, reducing the efficiency of condensing and resulting in higher pressure and more strain on your equipment. This corrosion can also create tube breach leaks, resulting in the loss of refrigerant and compounding your operational losses.

The most effective way to ensure that tubes achieve their full life expectancy and maximum heat transfer efficiency is to keep them clean [with RYDLYME, of course]. Eliminating mineral deposits from the tubes so the bare metal is exposed again restores optimal heat transfer. Essentially, this gives the chiller a new life cycle, as protective oxide coatings quickly rebuild themselves to re-passivate the cleaned tubes.

Chiller operators should document daily chiller performance with design and start-up data to detect problems or inefficient control set points. This process allows the operator to chart a history of operating conditions, which can be reviewed and analyzed to determine trends and provide warnings of potential problems. Upon daily charting of the chiller’s operation, the operator will notice gradual increases in condensing pressure. Early identification of the fouling characteristics will help determine the frequency of cleaning required.

The use of safe chemical cleaning technologies should be preferred when compared to mechanical methods. Aside from the risk of damaging components and the equipment itself, mechanical cleaning methods (e.g. tube brushing) may not effectively remove all of the deposits in the equipment. A thin film of water scale or even stubborn areas of build-up left behind will continue to impede the equipment’s operating efficiency and allow for faster growth of future deposits.

Energy costs are expensive enough. Keep your equipment clean to ensure maximum efficiency and equipment life, while decreasing operating and energy costs.

cooling towerClean towers without shutdown

Scaling within a cooling tower can restrict the water distribution of spray nozzles, reduce the water flow through the openings of a hot deck and restrict the air flow within the tower. All of these conditions will result in diminished cooling capacity and inefficient operation of the associated equipment on the cooling tower system.

A cooling tower system can be cleaned by adding RYDLYME to the tower basin, thus allowing the towers transfer pump to circulate the solution throughout the tower and the equipment it is cooling. This can all be accommodated during the normal operation of the cooling tower without shutdown!

RYDLYME improves efficiency on cooling tower

A 35-ton cooling tower at a major college had compressors operating at more than 260psi just to maintain a 70°F water temperature due to heavy water scale. RYDLYME  was put into the system to dissolve the scaling.


•  55 gallons of RYDLYME circulated for 4 hours via inline pumps then flushed with water

•  Cleaning was done while system was in operation!


•  Compressors are only operating at 165psi to maintain the 70°F water temperature!

•  RYDLYME is now part of the cooling tower’s annual maintenance schedule

•  Maintenance personnel found additional uses for RYDLYME, including cleaning: steam lines, humidifier at the fieldhouse and plate and frame heat exchangers

Cool air and quiet, just what the doctor ordered

A hospital was experiencing significant cooling problems with its 350-ton chiller and cooling tower due to severe scaling to the point where the lowest temperature they could achieve was only 76°F. The chiller was constantly running and making so much noise that the staff moved blankets onto the unit just to keep the sound from disturbing the patients.


•  220 gallons of RYDLYME circulated for 5 hours via inline pumps then flushed with water

•  Cleaning was done while system was in operation!



•  The chiller returned to cycling properly and no longer making noise; tower flow returned to normal

•  System was also able to provide desired temperatures without straining, or constantly running helping to decrease energy usage


RYDLYME decreases temperatures by 10°F!

An office building was experiencing inadequate cooling due to severe scale buildup in its 125-ton Trane chiller. The Trane service technician turned to RYDLYME  for a solution to the cooling problem.


•  30 gallons of RYDLYME circulated for 4 hours


•  Approach temperatures went from 13°F to 3°F!

•  Trane technician extremely pleased with result

•  Office employees were once again cool and productive

To the victor go the coils… and more

AC Coil before and after Rydall CC Application

AC Coil before and after Rydall CC Application

How important is keeping the coils in your AC system clean? If money is a central component to your business or life, then it is extremely important. Just as water scale and other mineral deposits reduce efficiency and increase operating costs in chillers and other water-side equipment, dirt and other contaminants do the same thing to AC systems. Fouled coils in an AC system can increase energy usage by more than 35% and reduce cooling capacity by as much as 30%!

In addition to energy usage, accumulation of contaminants on coils can lead to costly repairs or replacement. Fouled AC coils limit the volume of air reaching the condenser, which can lead to the unit freezing and eventual breakdown.

Regularly scheduled coil cleanings can not only help improve energy  usage, lower operating costs and extend the life of your system, they can help maintain healthy air-quality. As dirt, dust, moisture and other contaminants accumulate, the coils absorb them as air flows through it. As a result, the coils becoming a breeding ground for bacteria and mold which can threaten the indoor air quality.

Keep in mind there are several coil cleaners on the market. Some may only be used on certain materials, while others are limited to outdoor or indoor use only. There are also “green” coil cleaners, as well as a variety of application methods. Do research into which coil cleaner may be best for your system and needs, as well as contact your HVAC service provider with questions.


HVAC technicians turn to RYDALL CC

The service technicians at a major HVAC company decided to put RYDALL CC to the test against the coil cleaners they had been using for years.  These seasoned technicians were skeptical, but agreed to the test it when they learned that RYDALL CC can be used both indoors and outdoors, will not harm roofing materials and is biodegradable!


•  RYDALL CC diluted (2:1), foamed onto the coil surface, allowed to penetrate into the coil for approximately 20 minutes and rinsed off with water.


•  The technicians loved the performance and versatility of RYDALL CC and now use it on all their coil cleaning jobs!

Benefits of using RYDALL CC Coil Cleaner



APEX Monthly – February 2013

by TRSinc on February 15, 2013


APEX MONTHLY – FEBRUARY 2013 www.apexengineeringproducts.com

RYDALL WO: The multivitamin for bacteria

Whether you’re running around from meeting to meeting or trying to get your kids dressed in


the morning, we all need vitamins and other trace elements in order to function adequately on a daily basis. They aid our bodies in maintaining good health and fighting off illness when we’re under the weather.

Some may need more than others to perform at an optimal level depending on the task at hand. [Hey, pitchers and catchers report to spring training soon!]

The same goes for bacteria. In most people’s minds, bacteria has a negative connotation when it comes to… well, anything. In the realm of wastewater and sludge processing, though, bacteria is the Michael Jordan of waste treatment.

There is a plethora of bacteria in wastewater and sludge, good and bad, which are the driving force in the natural biological process. They work to reduce such things as fats, oil and grease (FOG) and biochemical oxygen demand (BOD).

The effectiveness of the good bacteria is dependent on micronutrients, especially with aerobic (requires oxygen) bacteria that need more trace elements as cofactors than anaerobic (does not require oxygen) bacteria. If the availability of these nutrients is low, bad bacteria that require fewer micronutrients will become dominant.

In certain situations, some bacteria or yeast strains may release sufficient quantities of antibiotics that suppress growth of other microorganisms. Additionally, an increased presence of protozoa may also have an undesirable effect by feeding on bacteria, subsequently reducing the population of good bacteria.


In wastewater and sludge processing, the reduction of FOG, BOD, as well as hydrogen sulfide (H2S); chemical oxygen demand (COD); and total suspended solids (TSS) is necessary due to local and federal regulations and a facility’s bottom line.

Just how effective is  RYDALL WO ?

• Reduce H2S by 95%
Sludge tanks and sewers
• Reduce BOD by 50% & TSS by 30%
Wastewater treatment and pre-treatment facilities/operations
• Reduce COD by 65% & Increase Dissolved O2 by 100%
Wastewater lagoons and ponds

Rydall WO

Most manufacturing or processing facilities are required by law to pre-treat its wastewater to meet acceptable levels of contaminants (e.g. BOD, FOG) prior to sending it off to a wastewater treatment plant. Companies can rack

Aside from investing significant capital in equipment and land, such as aeration systems, digesters, dewatering equipment, and retention tanks and ponds, haul-off fees for sludge are also costly.up significant fines for not meeting those requirements.


Implementing RYDALL WO Water Optimizer as part of the treatment process can enhance how quickly and efficiently you treat and process wastewater and sludge, in turn, saving you money in maintenance and disposal costs. Unlike other products, RYDALL WO does NOT contain active enzymes or bacteria that could have adverse effects on your wastewater treatment process.

The biodegradable RYDALL WO can be used as a cost-effective pre-treatment additive that can help facilities treat its wastewater more effectively, meeting local and federal wastewater regulations to eliminate costly fines. It can also expedite sludge processing by reducing the amount of sludge produced.

This can save you money by reducing the amount of sludge for disposal or frequency. Also, RYDALL WO will give you added capacity in your retention tanks or ponds, as well as enhance the effectiveness of other treatment equipment and systems.

Just think of RYDALL WO as a multivitamin for bacteria.


Starch processor puts RYDALL WO to the test

A specialty starch processor in Maine was intrigued by the capabilities of RYDALL WO in reducing the amount of produced sludge and its effluent BOD levels. Apex provided a small sample of RYDALL WO to the client for testing on a sample of its wastewater obtained from the sludge tank.

Prior to the start of the test, the BOD level in the sample wastewater measured 5,500 mg/l. We recommended applying 200 ppm of RYDALL WO to the sample and measuring the BOD level after a few days. After just six days, the BOD level dropped significantly, measuring only 75 mg/l! RYDALL WO not only reduced the BOD level by nearly 99%, the client observed very healthy “bugs” under a microscope. The dramatic results from the test prompted the client to state, “I’ve been in this field for 10 years now, tried lots of stuff, and this sure is different!”

As a result of this successful lab test, our client decided to take the next step… adding RYDALL WO to its 350,000-gallon sludge tank. The client purchased a 55-gallon drum of RYDALL WO, which arrived at a time when his sludge tank was at maximum capacity and recovering from turning anaerobic due to bad starch the plant had processed. They had been running blowers constantly for two weeks, but were unable to settle the tank during this period.

The client immediately added (2) gallons of RYDALL WO to the sludge tank and after two days, they were amazed at immense growth in bugs and activity. An additional (2) gallons were added to the tank, and after the first week, they were able to shut off the blowers and release 22,000 gallons of supernate (releasable water)!

At this point, the client let the system continue and during the second week, they were able to pump off an additional 100,000 gallons of supernate! After four weeks of RYDALL WO being in the system, the bugs were still big and healthy. This resulted in a cost-savings for the client as no solids needed to be dewatered, pressed or hauled off!

Further enhancing the wastewater treatment process and cost-savings, the exceptional quality of the supernate has allowed it to be pumped back to the beginning of the whole waste system.

Additionally, RYDALL WO effectively controlled the filamentous bacteria within the system, eliminating foaming and other adverse effects that usually occur with an overabundance of the

filamentous bacteria, as well as the need for extensive and costly nutrient replacement to counteract those effects.


Write this down, RYDLYME used on

Bi-Carbonate System at Pennsylvania paper plant


A paper plant for a major company in Pennsylvania used RYDLYME to dissolve mineral deposits within its Bi-Carbonate System (Bi-Carb), which controls alkalinity in the plant’s process water system. The Bi-Carb produces scale buildup inside the mix and day tanks, plugging up the system’s pipes, strainers and other components.


•  125 gallons of RYDLYME

• Circulated via pump inside mix tank for 3 hours; solution then transferred to day tank and circulated throughout the rest of the system (closed-loop) for 6-8 hours


•  After cleaning and water flush, scaling throughout the entire system was eliminated, returning it to peak operating efficiency

• Client plans to continue using RYDLYME in this cleaning application and is evaluating other applications in and around the plant where RYDLYME can be used


RYDLYME takes on strippers

An Oklahoma oil refinery experienced heavy fouling on the distribution plates/packing material in its ketone stripper unit. The fouling was a result of caustic solution and water being steam heated. With a deposit buildup, the unit does not effectively remove the ketone from the waste stream. The plant turned to RYDLYME to address the issue.


•  990 gallons of RYDLYME

•  Circulated via 2-inch diaphragm pump for 8 hours


•  Client was extremely happy with the cleaning as the unit was able to effectively remove the ketone, improving efficiency. Also, RYDLYME is now part of the unit’s normal maintenance procedure

• RYDLYME was also used in a prior job at the plant cleaning out a heat exchanger. The cleaning reduced temperatures from 300o to 150o F on process side and 160o to 125o F on tube side



Grease is the word for RYDALL MPgrease grim after

A manufacturing facility in Wisconsin used

RYDALL MP Multi Purpose Degreaser to cut through eight months worth of grease, grime and dirt buildup on its Haas ST30 CNC Lathe unit. The unit had never been cleaned.


•  Spray bottle of RYDALL MP (50% – 50% dilution with water)

•  Sprayed area, let sit for approximately 1 minute and wiped off


•  After just 3 applications, the heavy buildup was gone

• The company is using RYDALL MP on other equipment and areas throughout its facility to safely eliminate grease, grime and other contaminants


Reasons why HVAC service professionals turn to RYDLYME

From long-time users who continue to use and recommend the popular descaler, to future users

who witnessed a sea sh

ell dissolve in our hand, RYDLYME was a hit at

the 2013 AHR Expo in Dallas. Here’s why…

Stainless steel condenser at a power plant

Boiler at a university

Boiler at a university

Cooling tower (hot deck) at an institutional facility

Cooling tower (hot deck) at an institutional facility

Absorption unit at a university

Absorption unit at a university



Just the facts…

• Safe on metals typically found in water-based equipment/systems, including stainless steel and copper

•  Can be held in open hand

•  Biodegradable; non-toxic; non-hazardous

•  No special disposal measures necessary

•  pH-controllable for stricter local/facility disposal regulations

•  NSF(A3) & NSF/ANSI 60 certified

•  Typical concentration for a job is 50%, with many instances requiring even less

•  Use this single product on a wide array of equipment/systems and applications

•  Product has been in the market for over 70 years with a proven track record of safety & success


APEX Monthly_Feb2013

(above) Example of efficiency loss and increased energy costs associated with scale deposits inside a 500-ton chiller and how using RYDLYME can save you money.

Whenever there is a deposit of any type of heat transfer surface, it retards heat transfer. This is referred to as “thermal resistance” and requires a corresponding increase in energy to overcome it.

Major manufacturers of air conditioning equipment generally design condensers and chiller heat exchangers to operate at a maximum “thermal resistance” or fouling factor of 0.0005. As a result, a deposit of only .036 inches (about 1/32”) corresponds to an increase in energy costs of over 30%!

This 30% increase in costs relates to a common calcium carbonate deposit. The actual heat transfer coefficient of a deposit depends on what it is. Iron deposits of the same thickness are greater insulators and therefore have lower heat transfer coefficients. Certainly, any deposit contributing a fouling factor (thermal resistance) will increase electrical consumption and decrease efficiency.

The increase in electrical energy takes place in the compressor. Scale deposits will increase the thermal resistance causing higher refrigerant gas temperatures from the condenser. Higher refrigerant gas temperatures mean higher gas pressures, which require greater energy to compress the refrigerant. Therefore, there is an increase in the electrical power required to operate the compressor. Minimizing this potential energy loss requires monitoring of the daily energy consumed per ton of refrigerant/air conditioning being generated. This will allow you to recognize when inefficient operation is increasing due to deposit accumulation within your system.

The cost savings example shows the increased energy costs associated with scale deposits. Utilizing the example in this chart, you can plug in your facility’s equipment, energy cost per kWh and equipment operating hours. This will provide the total energy cost to operate your equipment for one year. Once you have ascertained your annual energy costs, you can apply the fouling factor that correlates to the current deposit thickness that exists within your equipment.

•  Each member of the Apex sales and technical staff has over 10 years of technical experience with numerous

applications and equipment


Chiller tubes before after

Before and
after a RYDLYME cleaning on chiller tubes.




APEX Monthly – January 2013

January 25, 2013

  APEX MONTHLY – JANUARY 2013 w w w . a p e x e n g i n e e r i n g p r o d u c t s . c o m   Get Rid of H2S, Ammonia & More! Whether on a municipal or industrial level, odor issues can […]

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Garage Cleaning

January 5, 2013

Real Estate managers and owners know how difficult it is to keep a clean appearance in their parking garage facilities. Whether it’s a downtown public parking garage, a hospital or museum garage or a private condominium garage, we’ve all seen how quickly they can become filthy and undesirable. SparkleWash of Denver has clients in all […]

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Icebergs in Colorado?

December 19, 2012

November – 2012                                              Welcome to the TRS, Inc. andSparkleWash of Denver newsletter. Icebergs in Colorado?    Well, not really icebergs, per se, but Ice Dams, nonetheless!  And they do much more damage to buildings in Colorado than icebergs!  And, much like icebergs, it’s what you don’t see than can hurt you!    Ice dams are ridges of ice that form at […]

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Chiller Epoxy Coating

November 21, 2012

Welcome to the  TRS, Inc.  and SparkleWash of Denver newsletter. Chiller Epoxy Coating Typical heat exchangers & condensers with copper tubes inserted into carbon steel tube sheets experience galvanic corrosion due to the dissimilar metals. In the presence of water, a corrosion cell is established causing rapid loss of carbon steel. This loss of steel will leave the copper tube ends protruding […]

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FREE BEER & Invitation

September 18, 2012

September – 2012                                              Welcome to the  TRS, Inc.  andSparkleWash of Denver newsletter. Look, if  “Free Beer!” doesn’t get your attention – maybe this year’s speakers and exhibitors will.  Yes, there will be free refreshments – even “Free Beer!”– at the Advanced Facilities Management and Engineering Conference (AFEC) Reception on October 3, 2012, beginning at 4:00 PM.  For detailed information on why you should attend, which […]

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Newsletter from TRS, Inc. – Fall Cleaning

August 21, 2012

August – 2012                                              Welcome to TRS, Inc. and SparkleWash of Denver    Why should you clean your cooling tower?  To save money! In this economy, we all want to save money. Cooling Towers should be cleaned periodically to removedeposits on intake louvers that can restrict airflow and toremove sediment and debris from the basin.  Sediment provides an excellent breeding ground […]

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