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Insufficient pretreatment, ineffective antiscalants, faulty instrumentation, and defective components can all be causes of degrading membrane system performance. Our methodical approach combines troubleshooting and sophisticated analytical techniques to identify the root cause and restore optimal performance.

Products

AWC provides customized solutions based on your feedwater chemistry, your operating restrictions and your treatment goals. Our aim is to ensure that your membrane system operates at maximum productivity without impacting your desired water quality.

Services

Insufficient pretreatment, ineffective antiscalants, faulty instrumentation, and defective components can all be causes of degrading membrane system performance. Our methodical approach combines troubleshooting and sophisticated analytical techniques to identify the root cause and restore optimal performance.

Protonation is the acceptance of acid protons from the surrounding solution, while deprotonation is the donation of acid protons from the surrounding solution. The name PROTON® was selected because all the calculations in the software, whether for scale saturation, or for salt rejection, are based on protonation and deprotonation of weak acids and bases in the RO/NF feed and brine.

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The AWC RO membrane autopsy includes over 20 specific tests on your RO membrane. Each test is designed to provide a detailed investigative analysis providing specific scientific data related to the cause of membrane fouling and scaling.

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AWC has the capability to conduct water analyses and membrane antiscalant projections for Reverse Osmosis and Nanofiltration systems. AWC can also conduct chemical dosage determinations for our antiscalants, coagulants, and flocculants. For clients with extreme scaling or inorganic fouling conditions, AWC can synthesize identical water chemistries in the lab to determine optimal pretreatment and control limits.

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AWC can perform cleaning studies to identify the best cleaning protocol and most effective cleaning chemicals for a particular fouling situation.

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AWC can perform cleaning studies to identify the best cleaning protocolfor a plant. One lead element from the first stage and one tail elementfrom the final stage are usually supplied. AWC engineers will then perform a separate cleaning study on each of the elements to determine the best cleaning pH, circulation and soak times, temperatures, and of course, the most appropriate cleaning chemicals for the foulants on the supplied membranes. This type of cleaning study helps the customer avoid ineffective cleanings, downtime and waste of expensive cleaning chemicals. It is especially useful for large municipal plants.

For industrial facilities that do not have clean-in-place (CIP) systems, AWC can perform multiple membrane element cleanings in our facility to ensure stringent cleaning procedures and to optimize results.

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AWC can provide personnel and portable cleaning equipment for membrane cleanings at customers’ sites. AWC can also train customer’s personnel on the operational and cleaning processes of RO plants.

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AWC is able to conduct pilot studies using state of the art pilot R.O. units designed to simulate actual site conditions. These pilot plants are mobile and can be dispatched to the customer’s plant site on short notice. Through these studies, our engineers are able to recommend effective solutions to persistent scaling and fouling problems resulting in a trouble-free operation and reduced operating cost for the customer.

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The AWC System Monitoring and Optimization Solution has been developed for Long-Term and Short-Term Monitoring and Performance Optimization for RO/MF/NF/UF Membrane Filtration systems. We can provide a strategy for formulating appropriate long-term monitoring programs that can be implemented at lower costs for maximum production efficiency. AWC uses scientific and statistical methods applied to site-specific data that accounts for relevant current and historical site data to develop an optimization plan for the current system and the best possible solution.

AWC can also help clients in start-up of new systems and will perform system normalization of data provided by the client to ensure that their membrane system continues to operate with optimal permeate production and minimal power consumption.

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Products

AWC provides customized solutions based on your feedwater chemistry, your operating restrictions and your treatment goals. Our aim is to ensure that your membrane system operates at maximum productivity without impacting your desired water quality.

RO and NF are now being used in a broad range of applications including potable water, mining, leachate, municipal and industrial reuse.  AWC has developed an extensive line of antiscalants, cleaning chemicals and biocides to control and reverse all scales and foulants that can form in these applications.

Multimedia Filtration (MMF) is often used upstream of RO/NF to remove suspended solids that can cause plugging of membrane feed channels and damage the membrane surface.  However, MMF media is only efficient at removing particles larger than 20 – 50 microns.   AWC has developed a line of membrane compatible organic and inorganic coagulants that agglomerate smaller silts, clays and colloids into larger clusters that are more efficiently filterable.  All polymers have been tested extensively to ensure safe use with RO/NF membranes even in case of slight overdosing.

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Our high performance antiscalants are effective at remarkably low dosages.  The use of AWC antiscalants can eliminate the need for acid dosing, enable plants to operate at higher recoveries, and reduce cleaning frequencies.  AWC has developed highly effective inhibitors that are unparalleled in the industry at controlling the most challenging scales.  All AWC antiscalants are NSF approved for use in potable membrane systems.

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AWC biocides have been specifically selected for use with RO/NF membranes.  Our product line includes oxidizing and non-oxidizing biocides that are selected based on water quality and frequency of biological fouling.

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AWC dechlorination chemicals have been specially formulated for long term shelf-life and are odor-free.  In addition to neutralizing free and combined chlorine to protect RO/NF membranes, they also deactivate all other oxidizing and non-oxidizing biocides; this makes them essential tools for environmental discharge.

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AWC cleaning chemicals are highly effective for removing even the most stubborn scales and foulants from RO/NF membranes.  High pH and low pH chemicals are available in liquid and powder form.  All AWC cleaning chemicals are NSF approved for use in potable membrane systems.

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MF/UF systems are widely for treating surface and wastewater, and are sometimes applied as pretreatment for RO/NF systems.  AWC has developed an extensive line of antiscalants and cleaning chemicals for use with MF/UF systems.

MF/UF membranes do not reject salts, and scaling is therefore not a common occurrence.  However, scaling can occur under certain conditions, especially in systems where air sparging is used frequently or high pH chemically enhanced backwashes (CEB) are applied.  AWC has developed a line of antiscalants that are approved for use in potable MF/UF systems.  All AWC antiscalants are NSF approved for use in potable membrane systems.

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AWC MF/UF cleaning chemicals are proprietary formulations for extremely stubborn foulants.  While aggressive commodity chemicals such as bleach and caustic soda are commonly used with PVDF and PES membranes, they are not always effective at removing organic foulants.  AWC has created a full line of MF/UF cleaning chemicals to address the varying chemical tolerances of PVDF, PES, PAN, PP, and CA membranes.  All AWC cleaning chemicals are NSF approved for use in potable membrane systems.

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RO permeate tends to be corrosive to metals.  In potable water distribution systems, this can cause compliance issues with the EPA’s lead and copper rule, and consumer complaints about red water and rust staining.  In industrial systems, corrosion can damage expensive equipment and reduce efficiency. AWC has created a line of corrosion inhibitors designed specifically for use with aggressive RO treated water.  We manufacture corrosion inhibitors for potable water distribution as well as chillers and hot water systems.

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