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Pretreatment Solutions Blog

For over 9 years, Nalco Pretreatment Solutions has been presenting a unique perspective on the water industry, systems and technologies, from very technical applications information, to general business topics. Our overarching themes include Safety, Saving Energy, Saving Time, Saving Water, and how our Services, Systems and Replacement Parts achieve these goals. On a routine basis, we add information on our services, systems and replacement parts and show how they are important to your company.

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Discontinued DOW FILMTEC™ RO and Nanofiltration Products >

While working on adding Dow Filmtec membranes to the Nalco eCommerce site, I came across this interesting list of discontinued FILMTEC™  RO and NF products on the Dow Filmtec website.  Before you consider substituting an older Reverse Osmosis or Nanofiltration membrane for a new version, contact us to run a projection on your system to determine if you will continue


RO Membrane Cleaning-Offsite >

If you have an RO system, periodically you will need to clean your membranes. We can provide off-site membrane cleaning services that are designed to improve the performance and extend the useful life of your RO elements. Using our proprietary off-site membrane cleaning stations, strict protocol, automation, and specialty cleaning products, we can handle your


North Jersey Service Center Opens in Linden, NJ >

To serve our customers in North Jersey, Eastern New York and Long Island better, we opened our 10,000 sqft service center in Linden, NJ.  From this location, we will delivery our DI tanks using our own delivery trucks.  Also, we provide Break/Fix equipment service, Preventive Maintenance (PM) services, and Microbiological Control Programs for your industrial and


Water Treatment Ecommerce Site Open For Business >

Our new E-commerce Web Site for water treatment, http://reskem.ecolab.com is ready to accept orders for many of the replacement parts you need for your industrial water treatment system!  As a Guest user, you will have access to all of the parts at list price.  You can become a Registered User by contacting Res-Kem. In future posts, I will explain


3D Printed Model of Rental Condensate Polisher >

To speed up installation of our rental condensate polishers, we will provide a 3D CAD file as part of the documentation.  This is will insure the condensate polisher starts delivering energy, chemical and water savings as quickly as possible.  As a result of having the 3 D CAD model, we had some laser sintered models of the


Selecting the Perfect Filter Cartridge >

Being a distributor of water treatment supplies, we are asked to provide filter cartridges. Most of the time, these requests will consist of: “Hey, I need a 5 micron 20″ long cartridge.” Sounds simple enough; however, there’s more to a filter cartridge than the just those two particular pieces of information. Below is an overview


OSHA Required Deadline You May Not Know About-December 1, 2013 >

Do you use chemicals or produce chemicals in your facility?  You may not be aware on December 1, 2013, OSHA, Occupational Safety and Health Administration, REQUIRES you to train all of your employees on the new chemical labeling elements and safety data sheet format, in addition to the current training requirements. New Pictograms for Hazard Communication If you have


Critical Safe Equipment Operation & Maintenance Reminder From Aquafine UV >

On November 13, we received a bulletin from Aquafine stating this precaution:  “This bulletin is a reminder of the potential risk of an unsafe condition arising due to sleeve bolt failure and quartz sleeve ejection if the unit is not properly maintained and/or safety guidelines are not followed. In order to ensure safe operation, it is


1.4 MILES of Wire Saved Through Innovative PLC Architecture >

… and over 800 electrical and 40 instrument air connections! The field wiring for our customer became very complex because they wanted verification that each of the twenty actuated valves is in the correct position.  Also, the system is pre-programmed to allow up to four additional greensand filter units through a HMI touchscreen. If the


10 Questions to Answer Before You Specify Water Treatment Equipment >

Many times per day, we are asked to provide a quote for a specific water treatment technology like RO, demineralization, water softening, filtration, etc.  At Res-Kem,  we like to take a step back and help you determine what equipment will cost effectively handle your water treatment issue.  Since there are so many choices and combinations


Unleashing Innovation: Manufacturing – Wall Street Journal Special Report >

The Wall Street Journal had an excellent special report on manufacturing yesterday, June 11, 2013.  I would recommend anyone who is involved with manufactured products and/or manufacturing companies should read the articles. Here are some examples of what Res-Kem has been working on with 3D printing.    3D Printed Condensate Polisher and Dealkalizer ModelsUsing Two Different Additive Technologies


Ultrapure Water System Starting Up at Nanotechnology Center in Philadelphia >

Res-Kem supplied, to a new nanotechnology center in Philadelphia, an ultrapure water system. The start up will commence this Monday. The system is designed to produce water with three different qualities to supply: 10 gpm to process cooling equipment 40 gpm to laboratory benches and humidification equipment 75 to 125 gpm to recirculation loop feeding process tools Ultrapure Water System


Naturally Occurring Radioactive Material in Your Water >

NORM means Naturally Occurring Radioactive Material and TENORM stands for Technically Enhanced Naturally Occurring Radioactive Material.   The USEPA states “TENORM is produced when radionuclides that occur naturally in ores, soils, water, or other natural materials are concentrated or exposed to the environment by activities, such as uranium mining or sewage treatment.”  Res-Kem sees the potential


Siemens Selling Water Treatment Business >

The big news in the water treatment industry for this past week has been Siemens’ announcement to sell the water treatment equipment and water systems service business.  Bloomberg announcement states that the Siemens Water Technologies division includes wastewater, municipal and industrial water purification services and membrane filtration systems.  Most of these technologies were parts of the former US Filter


Downloadable Catalog of Water Treatment Equipment Updated >

For 2012, we updated our downloadable industrial water treatment catalog.  (Given the number of equipment choices we provide, the catalog file is very large, so please be patient during the download.) Res-Kem’s Industrial Water Treatment Equipment Catalog for 2012 In addition to the updated XL, CL and ML Series RO system bulletins, we have updated the two


New Two Bed Demineralizer Technical Bulletins >

Res-Kem has a complete 2-Bed demineralizer product line designed for industrial water production.  The standard tank sizes range from 18″ to 96″.    Two-Bed Demineralizer withPVC Tank Coating and PVC Face Piping These two-bed deionizers are designed for fully or semi-automatic production of water with a conductivity of less than 10 micro-ohms and feature:   Flow rates


I Can’t Believe It’s Not A Water Sample! >

Holy Moses! It wasn’t 1 week after my last blog on October 28th 2011 about receiving water sample in old pickle jars when I get a water sample in an used margarine container!   Water Sample Container Received by Res-Kem P-L-E-A-S-E!. My disclaimer: “results not guaranteed for accuracy due to improper sampling container” Ok, the


Reduce Your Backwash Flow or Lament “Why is my ion exchange resin in the drain?” >

It is that time of year.  You must reduce your backwash flow in the Fall or you will find your ion exchange resin in the drain or waste treatment plant. Why do I need to reduce my backwash flow rate? If the backwash rate for an ion exchange system is set when the water is warm, the flow


Water Sampling a Critical Step in Residential Water Equipment Selection >

For our wholesale equipment customers who treat well water, we offer a very basic water analysis. Ultimately, the success of the water treatment starts with proper sampling methods. We aren’t talking rocket surgery here. Most residential water treatment systems can be prescribed by testing for 3-5 parameters, including hardness, pH, iron and Total Dissolved solids (TDS).


Ultra Filtration – The Membrane Problem Solver >

There are very few innovations in the water treatment market these days. Sure the electronic controls have gotten more intuitive and compact, that is about it. Ion exchange hasn’t really made quantum leaps into this either. So before I depress my fellow colleagues and influence young people to seek another career path, there is one exciting


Ion Exchange Resin Testing & Analysis Services >

Test your ion exchange resin to monitor and maintain your water treatment systems such as softeners, dealkalizers, condensate polishers, deionizers or demineralizer systems. You should have the resin analyzed on a yearly basis to check the quality and performance of the resin. Samples can be taken from the resin bed and sent to Res-Kem to


Fleck Valved Multiple Tanks -“What’s Your System Number?” >

The Problem: Many water treatment end users can wind up inheriting an orphaned treatment system. Usually it was part of a package supplied by a car wash or a boiler treatment company. The situation becomes more confusing when there are multiple tanks with elaborate wiring and piping that resembles knotted intestines. Also, the owners manual


Common Cation Ion Exchange Resin Foulants >

We are often asked to help with an ion exchange system that no longer has the same run length as when it was new. Typically, this is the result of either reversible or non-reversible fouling of the cation and/or anion ion exchange resin. These are some of the common foulants: Iron: Clear Water Iron (ferrous


Activated Carbon-“That Old Black Magic” >

Activated carbon is an amazing product. Its ability to purify and remove contaminants seems limitless. However, few people know what activated carbon really is or how it’s manufactured. One of my goto articles on the subject, written by Calgon Carbon, is “Activated Carbon. What is it, How Does it Work“. What is activated carbon made


Pentair NXT Electronics to the Rescue to a Field Customization Catastrophe >

Question: Recently, a customer called Res-Kem looking for assistance with troublesome Fleck 2900 valves at a car wash. The system was a hodge podge of “borrowed” components. There was a Fleck 2900 analog valve system 9, Autotrol 2″ turbine meters, and a Autotrol 480 electronic controller. This set up was like someone putting a Ford


GlobalSpec Condensate Polisher Presentation Archive >

GlobalSpec now has easier access to presentation archives from their Virtual tradeshows. Here is the presentation Kevin Preising gave at the “Industrial Processing” event in August of 2010 entitled “Reuse the energy – don’t lose it!” Why should I view the presentation?With fuel comprising 60-70% of the operating costs of a typical steam plant, dumping


Triple Greensand Plus Filter for Iron and Manganese Removal >

A triple Greensand Plus filter for iron and manganese removal was assembled and shipped today. This skid-mounted system will be installed to treat the water for a small community water system in the Poconos operated by a large private water utility company. The system operates in a parallel arrangement with three skid mounted, Greensand Plus


Dealkalizer Performance Calculations >

We recently had questions about a perceived problem with a dealkalizer. This customer believed the capacity of the dealkalizer was lower than originally specified and was unhappy with its performance. The customer was regenerating this new system more often than they regenerated the older system. We reviewed the system design and operation and found the


Pentair Fleck Electronic Timers >

Fleck has been moving quickly with upgrades to their electronic timers, which has created confusion over which is the latest one and which valves accept which timers. Is it ET, SE, XT, NT, NXT? By the time you read this there may be a more recent upgrade to the family of Fleck electronic timers. So,


Resin Traps-Insurance for Industrial Water Systems >

Recently, Res-Kem published a white paper entitled “Inexpensive Insurance for Water Treatment Systems-Resin Traps” by Ron Madden. In this white paper, three examples demonstrate how resin traps act as inexpensive insurance for costly problems that can develop when ion exchange resin reaches downstream process areas, process equipment, or the product. Depending upon the plant or


Water Analysis Article >

I came across an excellent article in an old issue of Water Conditioning & Purification magazine entitled “Making Sense of an Incomplete Water Analysis” by Frank DeSilva of ResinTech Inc. This article defines what the minimum required water analyses are for: Cationic Applications (hardness removal, metals removal, radium removal) Anionic Applications (sulfate removal, nitrate removal,


How to Measure pH Accurately in Steam Condensate >

Keeping within ASME guidelines for total iron in boiler feedwater below 0.1 ppm and total copper below 0.05 ppm copper requires attention to the maintenance of steam traps, knowledge of the metallurgy of the steam/condensing equipment in the steam distribution system and in particular the pH of return condensate. When measuring pH in condensate, it


Uniform Particle Size Ion Exchange Resins >

We received notice today that Purolite Ion Exchange Company will no longer be selling the anion resins, A-300 and A-400. These resins will be replaced by Purofine PFA-300 and PFA-400. The Purofine line of resins is uniform particle size (UPS). Dow did this a number of years ago when they introduced the Marathon grade of


Setting Brine Tank Refill Time on Fleck Softener Valve >

The Pentair® Fleck® multi-port softener valve controllers, electronic versions SE, XT, XTR and SXT and non-electronic versions, are very flexible allowing for customization of the regeneration cycle of the water softener. This flexibility requires that you know a little bit about the system and a simple calculation -“Brine Refill Time”. Although a simple calculation, “Brine


Parts for Solo, Solomatic, Bruner, Brunermatic, Permutit, Aquamatic, Culligan HiFlow Multiport Valves & Others >

Routinely, Res-Kem receives requests for quotes for water treatment systems and their replacement parts. One area that frequently needs explanation is replacement parts for multi-port valves including Solo®, Solomatic®, Bruner®, Brunermatic®, Permutit®, and Aquamatic®. We get questions like: Please quote the following.: AQUAMATIC valves with 6 ports total. 5 ports are 3″. One in the


Type II Anion vs Type I Anion: Ion Exchange Resin Analysis Yields Regeneration Savings >

Res-Kem is a supplier of ion exchange resins from several vendors including Purolite. Res-Kem is often asked to diagnose a potential ion exchange resin problem. Depending upon the resin type, cation, anion, or mixed bed, cost and length in service, it may make sense to sample the resin and test for parameters that can identify


Activated Carbon: Mesh Size >

We are often questioned about the differences between 1240 (12 by 40) mesh activated carbon and 830 (8 by 30) mesh activated carbon. The 1240 mesh activated carbon is smaller than the 830 activated carbon. The screens or the mesh sizes are different. The 12 mesh screen has 12 openings per square inch 12 across


FILMTECTM BW30LE-440 and BW30LE-4040 RO Elements to be Discontinued >

The Dow Chemical Company recently sent a discontinuation notice for the FILMTEC BW30LE-440 and BW30LE-4040 which have been an industry standard for many years. Dow will not take orders for the current LE elements after May 30, but will honor any orders on the books even if shipment is not until the end of the


Ion Exchange Resin Disposal >

Recently a customer asked us what to do about getting rid of the old resin after replacing it with new. This is a common question we get all the time. In general we can assume the following: Municipal or City Treated water contains little or no contaminants that are harmful to drink; therefore, it is


How to Correctly Size a Sodium Cycle IX Condensate Polisher >

Problem: Customer Can’t Get Enough Flow through Condensate Polisher => How to Correctly Size a Condensate Polisher Solution: Customer called to state they couldn’t get enough flow through their new condensate polisher. During the service visit, it was determined that the Deaerator and Condensate system was not being operated in accordance with Best Practices Procedures


Condensate Polisher Vessel Materials of Construction >

We often receive the following question about the materials of construction of condensate polisher vessels. Question: We’re considering a condensate polisher in our boiler plant. Should the vessel be constructed of carbon steel or stainless steel? Answer: Over 75% of the condensate polishers that Res-Kem builds utilize stainless steel pressure vessels. If you use a


Aquamatic Valve Selection and Pricing >

A common inquiry we receive at Res-Kem is a customer looking for a price and delivery on an Aquamatic Valve. We, in turn, ask the customer the following: What kind of Aquamatic valve is used on the equipment? Is the valve normally open, or is it normally closed? Does it have a limit stop or


Water Testing Services Offered >

Before purchasing any water treatment equipment, the first piece of information a person should obtain is a water analysis. The challenge is you want a quick, independent test at an affordable price. While we can not vouch for it at this point, an employee may have found a reliable third party testing service for Pennsylvania


Solo and Solomatic Valves from Aquamatic >

Over many years most water treatment equipment manufacturers utilized various types of multiport valves for their water conditioning equipment, including water softeners, dealkalizers and filters. One of these valves were known as Solo(R) Valves and Solomatic(R) Valves manufactured by Aquamatic(R) Inc., now a part of GE Water. These Solo and Solomatic valves, once a staple


Aquamatic Valve and Repair Kit Selection >

Res-Kem receives many requests for replacement of GE® Aquamatic® valves and Aquamatic valve repair kits. Please contact us. We have many people that can help you through the selection of the correct Aquamatic valve or Aquamatic valve repair kit. If you can have available the following information when you contact us, this would help you


Ion Exchange Resin Equivalency Chart >

There are many different ion exchange resin manufacturers including Purolite, Dow, Sybron/Bayer, Thermax, Rohm and Haas and ResinTech. We are often asked to provide a resin that is the closest equivalent to the ion exchange resin they have or need to purchase. This is a Resin Equivalency list we use internally of the most common ion exchange


Boiler Feed Water Flow Rate Requirements Chart >

Question: We received a request for proposal today for “a water treatment system to treat the water going into my dual 194 HP steam boilers”. Start of an Answer: The first thing we need to do is estimate the amount of water that will be used. The question is how? After you work in any


Problems with a Bruner(R) Softener Multi-Port Valve >

Here are some common problems we see with very old Bruner(R), Bruner-matic(R), and Culligan(R) Hi-Flo (TM) multi-port valves. A recent request for help prompted this posting. Problem: I have an old Bruner softener with a large cast iron multi-port valve. Here are some of the issues: Periodically my brine tank overflows My runs seem to


How Does a Softener Valve Nest Work? >

The “valvenest” for a water softener is made of a minimum of six valves. The easiest way to understand how the water and brine flows through the valvenest is to see this picture. The top flange attaches to the upper side port of the softener tank. This in turn connects to the top distributor. The


My backwash flow rate is too high for my well and well pump >

A common design issue for sand filters, multi-media filters, greensand filters, arsenic removal units, etc. is the large difference between the backwash flow rate and the flow rate during normal operation. Depending upon the media used, the backwash flow rate can be 2X to 10X the service rate. Due to restrictions in the piping coming


Why should I treat my boiler condensate? >

Question: Why should I treat my boiler condensate? Our Answer: The reason why to treat your boiler condensate is condensate systems always leak. Heat exchangers are where most of the leakage problems start. Tube sheet and tube leaks, of shell and tube heat exchangers, are the typical cause. This is where untreated cooling water can


What is an Empty Bed Contact Time (EBCT)? >

Question: We receive many questions on calculating the Empty Bed Contact Time as follows: “How do I calculate the “Empty Bed Contact Time” for sizing my carbon bed?” Our Answer: Calculating the Empty Bed Contact Time, EBCT, is fairly easy to do once you know that the EBCT has the units of time, and usually


Bacteria in RO System >

Question: “I am getting some bacteria coming out of my RO that I was not getting before. How can I clean the membranes.” Our Answer: You can use a product known as Minncare® or Oxonia. Both are sanitizing agents made up of hydrogen peroxide and peracetic acid. Dilute to 50 – 100 ppm, pump through



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Nalco Pretreatment Solutions (PTS) is a leading manufacturer and supplier of services, systems and supplies for industrial and commercial water pretreatment systems for treating process water, product water, boiler pretreatment, and drinking water.
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