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Cooling Tower and Boiler Treatment
Chemicals and Service
Water Tech is pleased to provide Chem-Aqua® custom-designed, turnkey water treatment programs for boiler, cooling, and process water systems. Recognizing that good results require more than just adding chemicals and testing, our Total Systems Approach provides solutions to water problems and improves systems efficiencies utilizing a comprehensive program of products, equipment, and services that address the unique mechanical, operational, chemical, and people requirements of each system.
Our Programs Are Designed To:
- Reduce energy and water usage and costs
- Prevent scale and corrosion
- Improve operating efficiency
- Ensure microbiological control
- Help meet environmental and regulatory compliance
- Reduce employee hazards and improve hygiene
- Reduce equipment downtime
- Replace liquid chemicals with dry, solid treatment chemicals
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Cooling Tower Treatment and Optimization:
Effective water treatment is an essential part of the preventative maintenance and optimization program for a cooling water system. A customized water treatment program from Water Tech - Chem-Aqua protects your cooling water system from corrosion, deposits, and microbiological growth; maximizes the life, efficiency, reliability, and safety of your cooling water system; and minimizes energy, water, and maintenance costs. Water Tech - Chem-Aqua provide innovative and effective treatment technologies for all types of cooling system designs.
Applications Include:
- Open recirculating systems - cooling towers, evaporative condensers, and fluid coolers
- Closed loops - chilled water, process loops, and thermal storage systems
- Once through systems
- Legionella risk reduction programs
- Solid scale, corrosion, and biocide treatment chemicals
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Boiler Treatment and Optimization
Water treatment is an essential part of the preventive maintenance and optimization program for any boiler system. Even a small reduction in boiler efficiency due to scale deposits, excessive purges or condensate losses can result in a significant increase in fuel and operating costs. These costs can be high for your installations and excessive scale or corrosion can cause expensive damage, loss of production or unexpected shutdowns.
Water Tech - Chem-Aqua custom water treatment solution protect your boiler system from the damaging effects of corrosion, scale and entrainment, and provide safe, reliable and economical vapor protection. Water Tech - Chem-Aqua offer effective treatment programs for all types of heating systems and appliances.
Applications Include:
- Boilers burning fossil fuels or waste
- Electric Boilers
- Steam Boilers
- Online and offline cleaning programs
- Solid scale, corrosion, and oxygen scavenger treatment chemicals
- FDA / USDA Approved
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SOLID WATER TREATMENT HANDICHEM® CHEMICALS:
The HandiChem System is a new generation water treatment solution that eliminates the handling, safety, and environmental concerns associated with using liquid chemicals in pails or drums.
- Reduces risk of injuries associated with drum handling, chemical spills, and splashes
- Smaller footprint simplifies transportation, storage, and installations in tight spaces
- Ideal for hard to access systems that require delivery up steps or through office spaces
- Less packaging, landfill waste, and transportation related greenhouse gas emissions
The HandiChem System uses the same actives as liquid programs. But instead of shipping water, chemical feed solution is made on site using HandiFeed Dissolving Feeders and high performance HandiPak solid concentrates.
HandiChem Solid programs are available for cooling towers, closed loop, and steam boiler systems.
- SCALE – CORROSION INHIBITORS
- BIOCIDES
- OXYGEN SCAVENGERS<
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CLOSED LOOP TREATMENT AND OPTIMIZATION:
Hot water, chilled water, tempered water, process water, and glycol filled closed loops are often ignored when considering a water treatment program, which can be a costly mistake. Closed loops that are not properly treated can cause significant corrosion damage. Closed loops that are leaking can waste water and energy while causing corrosion. These systems must be checked on a regular basis to confirm proper treatment level and system integrity. Water Tech - Chem-Aqua has the product line and technical expertise to recommend the appropriate treatment for the metallurgy in any closed loop system and monitor it after treatment is applied.
- Hot Water Systems
- Chilled Water Systems
- Tempered Water Systems
- Process Water Closed and Open Systems
- Glycol Solutions
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Equipment:
aquaDART® AUTOMATION CONTROL SYSTEMS:
The aquaDART Water Treatment Control System is state-of-the-art automation for monitoring and controlling water treatment programs to achieve maximum system protection and minimum operating costs. aquaDART Systems employ Direct Analysis and Response Technology (DART) to continuously monitor and adjust the water treatment program based on changing system demands. Real-time sensors are used to directly measure the cycles, inhibitor and oxidizing biocide concentrations, and other key parameters that determine scale, corrosion, and microbiological control. Custom control software continuously regulates blowdown and chemical feed, based on changes in system demand, and immediately communicates upset conditions. Web-enabled control software is standard to provide real-time, performance-based feedback and alerts.
Features and Benefits
- Complete water treatment automation system
- Continuously monitors and adjusts program based on system changes
- Automatic cycle and blowdown control
- Fluorescent traced inhibitor feed and control
- ORP based biocide feed verification and control
- Web-enabled monitoring and control software
- Cabinet and board mounted for easy installation
- Universal access controller not locked with proprietary software
BOARD MOUNTED CHEMICAL FEED AND CONTROL SYSTEMS:
Without properly engineered chemical feed equipment, it is hard to effectively manage treatment chemicals and system parameters. Water Tech - Chem-Aqua® Board Mounted Chemical Feed and Control Systems provide all of the components needed to treat a water system in a pre-assembled ready-to-install package. With our pre-assembled systems, the components come mounted on polypropylene boards ready for inlet and outlet connection upon arrival. This makes it faster and easier to properly install the water treatment system.
Unlike having to wait for each component to arrive from the manufacturer and then having to pay for a professional installation, all our chemical feed and control systems are pre-assembled with pumps, controllers, and flow manifolds on a single polypropylene board that is ready to be installed upon arrival.Standard Features
- Pre-assembled ready-to-install
- Pressure tested for leaks prior to shipment
- Pre-mounted on high density board
- Plumbing and electrical connections included
Advantages
- Standard or custom designs available
- Easy installation and reduced installation time
- Professional and quality service
- Fully stocked parts warehouse
- In-house technical support
READY-TO-INSTALL BOILER BLOWDOWN CONTROL ASSEMBLIES:
We supply a complete line of Chem-Aqua® boiler blowdown control systems designed to help reduce your fuel costs by better blowdown control. While too little blowdown can lead to scale and carryover, too much wastes fuel, water, and treatment chemicals. Due to the importance of proper installation, our RTI Boiler Blowdown Control Assemblies are especially popular.
These precision engineered systems help take the hassle and aggravation out of installation, as well as help ensure the blowdown control system operates correctly. Factors such as the sensor orientation, the distance between sensor and orifice union, the layout of the blowdown assembly piping, and the distance of the unit to the boiler all influence how well the system operates. Each RTI Boiler Blowdown Assembly is engineered with these important considerations as well as ease of installation in mind.
Features
- Steam rated motorized ball valve
- Microprocessor based blowdown controller
- Standard stainless steel conductivity sensor
- Optional sample cooler
- Pre-Assembled, Easy installation
- Better blowdown control
- Advanced and remote field communications
- Reduced fuel costs
Advantages
COOLING TOWER AND CLOSED LOOP FILTERS:
We supply a complete line of Chem-Aqua® boiler blowdown control systems designed to help reduce your fuel costs by better blowdown control.
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COOLING TOWER CLEANING AND CHLORINATION:
Regular cooling tower cleaning and chlorination removes contaminants and helps:
- Minimize energy costs
- Improve microbiological control
- Extend HVAC system life
- Enhance HVAC system operation
- Maximize efficiency of water treatment chemicals
Cooling tower cleaning and chlorination requires specialized skills. Our specially trained team has the necessary expertise to ensure it is done properly.
CLOSED LOOP CLEANING SERVICES:
Cleaning, Passivation, Filtration, and Inhibitor Replacement
Regular closed loop cleaning and passivation helps:
- Remove debris to keep systems clean and operating at maximum efficiency
- Minimize energy and service costs
- Improve corrosion control measures
- Extend system life
Closed loop cleaning requires specialized skills. Our professionally trained team has the necessary expertise to ensure it is done properly.
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LG Chem Brackish (BW) & Seawater (SW) RO Membranes
Lowering the Cost of Desalination
LG Chem Water Solutions has set a new standard for membrane productivity within the reverse osmosis desalination industry. Utilizing patent-pending thin-film nanocomposite membranes, LG Chem’s spiral-wound NanoH2O membrane elements deliver the highest flux and energy efficiency when compared to the current installed base. Extensive research and development in innovative technologies allow LG to manufacture membrane materials that demonstrate increased permeability and/or increased salt rejection, fundamentally changing the economics of desalination.
Our LG Chem Brackish and Seawater reverse osmosis membranes feature nanomaterials incorporated into the thin-film polyamide composite layer that improve membrane energy efficiency and productivity. The innovative patented technology significantly increases membrane permeability, increases flow, and reduces energy consumption, while matching best-in-class salt rejection.
LG Chem water anti-fouling membranes also feature proprietary chemistry to inhibit adsorption of biological and organic materials.
LG CHEM 4 INCH and 8 INCH BRACKISH (BW) RO MEMBRANES
LG Chem Water Solutions develops, manufactures and markets the next generation of BWRO elements for water treatment. We offer industry-standard 8-inch and 4-inch element configurations that retrofit easily into standard pressure vessels.Model Number Membrane Area Element Diameter Permeate Flow Rate StabilizedNaCl Rejection Feed Spacer LG BW 400 ES 37 m² (400 ft²) 20 cm (8 in) 39.7 m³/d (10,500 gpd) 99.6% 34 mil LG BW 440 ES 41 m² (440 ft²) 20 cm (8 in) 43.7 m³/d (11,500 gpd) 99.6% 28 mil LG BW 4040 ES 7.9 m² (85 ft²) 10 cm (4 in) 9.5 m³/d (2,500 gpd) 99.5% 28 mil LG BW 400 R 37 m² (400 ft²) 20 cm (8 in) 39.7 m³/d (10,500 gpd) 99.6% 34 mil LG BW 440 R 41 m² (440 ft²) 20 cm (8 in) 43.7 m³/d (11,500 gpd) 99.6% 28 mil LG BW 4040 R 7.9 m² (85 ft²) 10 cm (4 in) 9.5 m³/d (2,500 gpd) 99.6% 28 mil LG BW 400 AFR 37 m² (400 ft²) 20 cm (8 in) 39.7 m³/d (10,500 gpd) 99.6% 34 mil LG BW 4040 AFR 7.4 m² (80 ft²) 10 cm (4 in) 8.7 m³/d (2,300 gpd) 99.6% 34 mil Technical Datasheet
We Are Pleased to Provide Technical Datasheets Upon Request
LG CHEM 8 INCH SEAWATER (SW) RO MEMBRANES
LG Chem Water Solutions develops, manufactures and markets the next generation of SWRO elements for desalination. We offer industry-standard 8-inch element configurations that retrofit easily into standard pressure vessels.Model Number Membrane Area Element Diameter Permeate Flow Rate StabilizedNaCl Rejection Stabilized Boron Rejection LG SW 400 ES 37 m² (400 ft²) 8 inches 52 m³/d (13,700 gpd) 99.8% 89% LG SW 440 ES 41 m² (440 ft²) 8 inches) 57 m³/d (15,070 gpd) 99.8% 89% LG SW 400SR 37 m² (400 ft²) 8 inches 22.7 m³/d (6,000 gpd) 99.85% 93% LG SW 440 SR 41 m² (440 ft²) 8 inches) 25 m³/d (6,600 gpd) 99.85% 93% LG SW 400 GR 37 m² (400 ft²) 8 inches 28.4 m³/d (7,500 gpd) 99.85% 93% LG SW 440 GR 41 m² (440 ft²) 8 inches 31.2 m³/d (8,250 gpd) 99.85% 93% LG sW 400 R 37 m² (400 ft²) 8 inches 34 m³/d (9,000 gpd) 99.85% 93% LG sW 440 R 41 m² (440 ft²) 8 inches 37 m³/d (9,900 gpd) 99.85% 93% The above values are normalized to the following test conditions: 32,000 ppm NaCI, 5 ppm Boron, 5.5 MPa (800 psi), 25°C(77°F), pH 8, 8% recovery. Permeate flows for individual elements may vary -/+ 15%.
Technical Datasheet
We Are Pleased to Provide Technical Datasheets Upon Request
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LG Chem Residential TWRO Reverse Osmosis Membrane Elements
LG Chem’s NanoH2OTM reverse osmosis elements for residential water treatment utilize advanced thin-film nanocomposite membrane technology to safely and effectively treat water for home use. These membranes are NSF Certified and deliver the reliability and quality customers from around the world have come to expect from LG Chem.
All LG Chem TWRO residential RO membranes are available in standard configurations and can easily fit into any point-of-use residential RO systems.
Technical Datasheet
We Are Pleased to Provide Technical Datasheets Upon Request
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Dow RO Membranes
DOW FILMTEC 4 INCH and 8 INCH BRACKISH (BW)
Our DOW FILMTEC™ Brackish and Seawater RO Elements with 8-inch, or 4-inch diameters, feature high active membrane areas, low net driving pressure, thicker feed spacers, ant-fouling surface chemistry, and iLEC™ Interlocking End Caps for no o-ring leaks. These features provide consistent high performance, maximum element life, lower energy usage, and reduced costs when treating difficult water.
BRACKISH 8 INCH MEMBRANES:
- BW30-365
- BW30-400
- BW30-400/34i
- BW30XFR-400/34i
- BW30-440i
- BW30HR-440i
- LE-400
- LE-440i
- HRLE-440i
- XLE-440
BRACKISH 4 INCH MEMBRANES:
- BW30-4040
- LC HR-4040
- LC LE-4040
- BW30HR-440
- LE-4040
- LP-4040
- TW30-4040
- XLE-4040
DOW FILMTEC 4 INCH and 8 INCH SEAWATER (SW)
Our DOW FILMTEC™ Brackish and Seawater RO Elements with 8-inch, or 4-inch diameters, feature high active membrane areas, low net driving pressure, thicker feed spacers, ant-fouling surface chemistry, and iLEC™ Interlocking End Caps for no o-ring leaks. These features provide consistent high performance, maximum element life, lower energy usage, and reduced costs when treating difficult water.
BRACKISH 8 INCH MEMBRANES:
- SEAMAXX
- SW30HR-380
- SW30HRLE-370/34i
- SW30HRLE-400
- SW30HRLE-400i
- SW30HRLE-440i
- SW30ULE-400i
- SW30ULE-440i
- SW30XHR-400i
- SW30XHR-440i
- SW30XLE-400i
- SW30XLE-440i
BRACKISH 4 INCH MEMBRANES:
- SW30HRLE-4040
- SW30-4021
- SW30-4040
DOW FILMTEC < 4 INCH BRACKISH (BW) and SEAWATER (SW)
Our DOW FILMTEC™ Brackish and Seawater RO Elements with a diameter less than 4 inches are industry standards for reliable operation and production of high quality commercial water at low pressure operations. These RO Elements feature exceptional flow rates and may be operated at lower pressure to reduce pump size, cost, and operating expenses.
We Are Pleased to Provide Technical Datasheets Upon Request
DOW FILMTEC Sanitary, Heat Sanitizable
Our DOW FILMTEC sanitary full fit and heat sanitizable RO membrane elements with 8-inch, or 4-inch diameters, are specifically designed for sanitary, food-dairy, pharmaceutical, medical, and other sanitary applications. The full-fit configuration minimizes stagnant areas and is ideal for sanitary design applications. Our heat sanitizable RO membranes deliver exceptional quality water with the added capability to withstand sanitization with hot water, including condensate polishing.
Sanitary 8 Inch Membranes:
- RO-390-FF
- HSRO-390-FF
Sanitary 4 Inch Membranes:
- RO-3838/30-FF
- RO-3840/30-FF
- RO-3938/30-FF
- RO-4040-FF
- HSRO-4040-FF
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Dow NF Membranes
DOW FILMTEC 4 Inch and 8 Inch Nanofiltration (NF) Membranes
Our DOW FILMTEC™ NF Elements with an 8-inch or 4-inch diameters provide exceptionally high productivity and are designed to remove a high percentage of salts, minerals, nitrate, iron and organic compounds such as pesticides, herbicides, and THM precursors with low energy usage and reduced power consumption and cost.
Nanofiltration 8 Inch Membranes:
- NF245-390-FF
- NF270-400/34i
- NF90-400/34i
Nanofiltration 4 Inch Membranes:
- NF270-4040
- NF90-4040
- NF245-3838/30-FF
- NF245-3840/30-FF
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Dow UF Membranes
OW Integraflux Ultrafiltration (UF) Hollow Fiber Membranes
Ultrafiltration (UF) technology uses a membrane barrier to exclude particles as small as 0.01 microns, including bacteria, viruses, pathogens, suspended solids, and colloids. Advantages of UF compared to clarifiers and media filters, are its high tolerance to feed water quality upsets, absolute barrier and improved water quality. Our DOW IntegraFlux™ Ultrafiltration Modules and DOW IntegraPac™ Ultrafiltration Skids utilize the latest PVDF hollow fiber membranes in an outside-in flow configuration with a 0.03 micron nominal pore diameter making them an excellent choice to protect downstream processes such as RO.
We Are Pleased to Provide Technical Datasheets Upon Request
DOW IntegraPac Ultrafiltration (UF) Skids
Our DOW IntegraPac Skids are pre-engineered, standardized and ready-to-assemble skids comprised of DOW UF membrane modules, auxiliary parts and piping to significantly streamline design, assembly and installation.
We Are Pleased to Provide Technical Datasheets Upon Request
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Multi-Media Filter Coagulants
Our Avista RoQuest® membrane compatible coagulants improve the efficiency of multimedia filtration (MMF) equipment by increasing particulate removal and providing a higher quality feedwater to downstream membrane systems. Adding a RoQuest liquid coagulant to feedwater causes particles to be more readily retained by MMF equipment, improving the filtrate quality fed to downstream membrane systems. Better quality filtrate can reduce cleaning frequencies and increase system run times. Studies prove that a nominal dosage of a RoQuest coagulant may allow MMF equipment to remove over 97% of particulates.
RoQuest® 3000
RoQuest® 3000 liquid coagulant contains a proprietary blend of organic polymers to significantly improve multimedia filter efficiency.
RoQuest® 4000
RoQuest® 4000 liquid coagulant is an organic polymer and ferric sulfate blend used to enhance the removal of a broad spectrum of silt, organics and colloids in multimedia filters.
RoQuest® 6000
RoQuest® 6000 is a liquid blend of organic coagulants and ferric sulfate used to reduce turbidity and remove humic and fulvic acids in multimedia filters.
RoQuest® FS
RoQuest® FS liquid coagulant contains ferric sulfate and is designed for use as a flocculant in direct filtration applications.
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Support Services
Water Analysis
A thorough and up-to-date water analysis is a critical aspect in selecting a targeted and properly-dosed antiscalant product for reverse osmosis (RO) or nano-filtration (NF) systems of any size and water quality. Selective ions must be tested in the feed water in order to predict the scale/fouling potential in the system. The specific ions tested are then entered into the Avista Advisor Projection software where recovery rates, antiscalant selection, dose rates and potential scales/foulants are determined.
Laboratory Membrane Cleaning Study
Our Avista laboratory membrane cleaning studiy, in conjunction with our Avista membrane autopsy, is a useful tool in validating the effectiveness of a membrane cleaning regime against a site-specific foulant.
Membrane cell test cleaning study before.
Membrane cell test cleaning study after.
The Avista membrane autopsy identifies foulants and recommends solutions to minimize future fouling, and the Avista cleaning study identifies the best cleaner(s) and procedure to remove fouling on the Reverse Osmosis (RO), Nano (NF), Ultra (UF), or Micro (MF Filtration membranes already affected.
Samples of a dissected membrane or casing are placed on a clear cell tester and baseline flow and rejection performance are established under crossflow conditions. A cleaning solution is then recirculated through the tester at optimum temperature. Upon completion, post-clean data is recorded to determine the effectiveness of that particular chemistry. If necessary, this process continues until we’ve identified the cleaner that provides the best result.
Membrane and Module Autopsy
The physical dissection of a reverse osmosis (RO) element or microfiltration/ultrafiltration (MF/UF) module and the resulting analysis of its foulants can be one of the most definitive methods of troubleshooting a system.
Identifying the cause of performance loss is only part of this valuable service. Equally important are the recommendations provided in the Avista report which outlines the best course of action in correcting system problems including frequent cleanings, loss of productivity, reductions in permeate quality, system downtime or premature membrane or MF/UF replacement.
Why Conduct An Autopsy?
- To identify scaling or fouling problems
- To determine the proper cleaning regimen
- To improve system performance
Filtration Study
The MMF Filtration Study helps determine the most efficient and cost-effective dosage of RoQuest® coagulant for site-specific feedwaters. The MMF Laboratory Analysis uses particle counts, zeta potential, and turbidity to characterize a water sample for colloids and silt and determine its fouling potential. The analysis can be done on feed water or filtrate to gain a better understanding of the foulant parameters.
To assist you in identifying site-specific foulants, we offer Membrane Autopsies. Our Autopsies include Chromatic Elemental Imaging (CEI), an innovative technology first introduced by Avista that can identify the location and relative concentration of elements in a membrane fiber sample.
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Chlorine Removal
Our chlorine removal formulations remove free and combined chlorine from RO system feedwaters to protect membranes from oxidation damage. Membranes can last for days or years depending on the care they receive. Chlorine in feedwater can permanently damage membranes, requiring them to be replaced. AntiChlor is an extremely economical option for chlorine removal compared to other methods. It’s offered in two formulations, and both are certified for use in systems producing potable water.
AntiChlor® 30
AntiChlor® 30 is a liquid dechlorinating agent used as a mild, non-oxidizing biostat or injected into RO feedwaters to protect polyamide membranes from permanent damage caused by chlorine.
AntiChlor® 427
AntiChlor® 427 is a modified, liquid sodium bisulfite formulation used to remove free and combined chlorine from RO feedwaters. This unique chemical is odorless and stabilized to prevent off-gassing, making it ideal for indoor installations.
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Membrane Biocides
Our Avista RoCide® are non-oxidizing, membrane compatible biocides to reduce biological fouling in membrane systems. RoCide biocides are broad spectrum formulations that combat contaminants such as bacteria, fungi and algae. They are compatible with all membranes and can be used with various Avista cleaners. Our biocides may be applied intermittently, via continuous injection or as a periodic addition to your clean-in-place (CIP) system.
RoCide® DB5
RoCide® DB5 is a fast-acting, non-oxidizing liquid biocide that degrades naturally and rapidly, making it a cost-effective method of eliminating contamination in compliance with strict discharge regulations.
RoCide® DB20
RoCide® DB20 is a concentrated, fast-acting, non-oxidizing liquid biocide that provides instant antimicrobial activity. This product degrades rapidly and naturally, making it a cost-effective method of eliminating contamination in compliance with strict discharge regulations.
RoCide® IS2
RoCide® IS2 liquid is a broad spectrum, non-oxidizing biocide intended for continuous injection and specifically formulated for RO feedwaters. It is also highly effective as a preservative and can be used alone or in conjunction with RoCide® DB20.
Technical Datasheet
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Membrane Cleaners
Our AvistaClean® and RoClean liquid and powder formulations are proprietary membrane cleaners that provide efficient and cost-effective removal of all types of membrane foulants. They’re powerful against organic and inorganic foulants and compatible with all membranes. Several cleaners are classified as Green Chemicals to help meet strict environmental discharge limits, and are the highest performing green cleaners in the industry. Most are NSF certified for use in drinking water potable systems.
POWDER MEMBRANE CLEANERS
AvistaClean® P611 Green
AvistaClean® P611 powder is free of phosphate and EDTA. It dissolves organic foulants such as humic acids, fatty acids, siloxane compounds, fungicides, pesticides and pharmaceutical compound and is highly buffered to resist pH changes during the cleaning.
RoClean P111
RoClean P111 powder is a multicomponent, high pH buffered cleaner formulated to remove biological fouling in the presence of hydrophobic and hydrophilic organics and particles, such as clay, from membranes.
RoClean P112
RoClean P112 powder is a multicomponent, high pH buffered cleaner specifically formulated to safely remove silica scale from membranes.
RoClean P303
RoClean P303 powder is a multicomponent, low pH buffered cleaner formulated to remove metal foulants and calcium carbonate from membranes.
RoClean P703 and P903
RoClean P703 and P903 powders are multicomponent, low pH buffered cleaners formulated to remove metal foulants such as iron, manganese and aluminum from membranes.
RoClean P911
RoClean P911 powder is a multicomponent, high pH buffered cleaner formulated to remove particularly high levels of organics, including humic and fulvic acids.
LIQUID MEMBRANE CLEANERS
AvistaClean® L011
AvistaClean® L011 liquid is a multicomponent, high pH buffered cleaner formulated to remove oils and grease from membranes.
RoClean L211
RoClean L211 liquid is a multicomponent, high pH buffered, low-foaming cleaner formulated to remove colloidal silica, clays, organic color and bacterial slime from membranes.
RoClean L212 Green
RoClean L212 liquid is a multicomponent, high pH buffered cleaner formulated to remove clay and metal oxides from membranes.
RoClean L403
RoClean L403 liquid is a multicomponent, low pH cleaner formulated to remove metal foulants and calcium carbonate scale from membranes.
RoClean L811
RoClean L811 liquid is a multicomponent, high pH buffered cleaner formulated to remove sulfate scales including barium, strontium and calcium sulfate from membranes.
UF / MICRO FILTRATION MEMBRANE CLEANERS
Our Avista micro-filtration (MF) / ultra-filtration (UF) specialty formulations may be applied in place of generic cleaners or as a periodic recovery cleaner between cleanings with generics. The AvistaClean MF line is formulated to remove common foulants and offer superior results compared to generics. To assist you in identifying site-specific foulants, we offer the MF / UF Cleaning Study and the MF / UF Membrane Autopsy, which includes Chromatic Elemental Imaging, a new technology to identify the location and relative concentration of elements in a membrane fiber sample.
AvistaClean® MF 1000
AvistaClean® MF 1000 powder is a proprietary, one-step cleaner used to remove foulants from MF and UF membrane surfaces and pores.
AvistaClean® MF 1000A
AvistaClean® MF 1000A powder is a synergistic cleaner blend formulated to remove organic and particulate foulants from chlorine tolerant MF and UF membrane surfaces and pores.
AvistaClean® MF 3000
AvistaClean® MF 3000 powder is a low pH, proprietary cleaner that removes calcium carbonate and metal foulants from MF and UF membrane surfaces and pores.
Technical Datasheet
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Membrane Antiscalants
Our Avista Vitec® antiscalants are multicomponent formulations that allow higher reverse osmosis (RO) and nano-filtration (NF) system recovery and reduce cleaning frequency. They inhibit scale while also dispersing colloidal particles to help extend system run times, reduce cleaning frequency and increase the productive life of RO and NF elements. Most are NSF certified for use in systems producing potable drinking water.
Vitec® 3000
Vitec® 3000 is a powerful, broad spectrum, liquid antiscalant and dispersant that is compatible with organic coagulants. It is highly effective at low dose rates and in a wide range of feedwaters and is certified for use in systems producing drinking water.
Vitec® 5100
Vitec® 5100 is a broad spectrum, liquid antiscalant and dispersant that is compatible with organic coagulants, effective at low dose rates and approved for use in systems producing drinking water. It is particularly cost-effective in seawater and municipal applications.
Vitec® 4000
Vitec® 4000 is a liquid antiscalant and dispersant that offers excellent silica scale inhibition and allows increased system recoveries in high silica feedwaters. It is certified for use in systems producing drinking water.
SPECIAL FEATURE ANTISCALANTS
Vitec® 7000
Vitec® 7000 is a multicomponent liquid antiscalant and dispersant that provides a high level of sulfate inhibition and allows increased RO system recoveries in challenging waters.
Vitec® 8200 Green
Vitec® 8200 liquid antiscalant and dispersant is free of phosphate and phosphonate. This all-polymer blend is compatible with all membrane types and is NSF certified for use in systems producing drinking water.
Vitec® 1500
Vitec® 1500 is a liquid antiscalant designed to inhibit or reduce calcium fluoride, calcium sulfate, calcium carbonate, calcium phosphate, barium sulfate, and strontium sulfate scale.
Vitec® 5000
Vitec 5000 is a liquid antiscalant and dispersant used to control scale and inorganic fouling in a variety of feedwater pH ranges, and is a powerful inhibitor against carbonate and sulfate scales.
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Membrane Chemicals & Services
Reverse Osmosis (RO), Nano (NF), Ultra (UF), and Micro (MF) FiltrationWater Tech is a long-term trusted stocking supplier and technical expert of Avista® Technologies membrane system chemicals for reverse osmosis (RO), nano-filtration (NF), microfiltration / ultrafiltration (MF / UF) and multimedia filtration (MMF).
Membrane systems represent a significant investment, and Water Tech - Avista are experts in membrane care. We ensure the maximum useful life and production capacity of your membrane system, whether using reverse osmosis, microfiltration / ultrafiltration or multimedia filtration. Our focus is to enhance your membrane system life, performance, reliability and recovery rate.
Our process support services include membrane cleaning studies, membrane autopsies, off-site cleaning, field support, filtration studies, on-site supervision of procedures, chemical application recommendations, data monitoring and on-site troubleshooting.
Avista products are supplied in over 100 countries, helping customers achieve their water treatment goals.
Reverse Osmosis Typical Application Diagram:
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Granular Activated Carbon
Water Tech supplies a variety of Granular Activated Carbon (GAC, PAC) filter media to remove organic compounds, color, and / or extract free chlorine from water for reverse osmosis (RO), nano filtration (NF), manufacturing processes, discharge, and other applications.
Granular Activated Carbon remove impurities through adsorption and contact time. Free chlorine removal is the result of residence time in contact with the carbon, rather than filter surface loading, with standard design of typically 2 to 6 gpm / ft3 of carbon bed. Chloramines are significantly harder to remove than chlorine, and require an extended period of contact with the activated carbon, referred to as empty bed contact time (EBCT).
Our Activated Carbon Media Types Include:
- Bituminous: Coal based granular media.
- Coconut Shell: Superior hardness; high activity level; trihalomethane removal; long life.
- Acid washed: Increased adsorptive capacity, low pH applications.
- Catalytic: Specialized to remove hydrogen sulfide gas, iron, and chloramines.
Contaminants Removed by Our Granular Activated Carbon Include:
- Chlorine
- Color
- Organic Substances and Chemicals
- Fertilizers
- TCE (Trichloroethylene)
- EDB (Ethylene dibromide)
- THM (Trihalomethanes)
- Sediment
- Chemical Odor
- Pesticides
- Detergents
- Chloramines
- Others
Water Tech carbon filter tanks and systems are also available in all sizes.
Please refer to our technical datasheets, or contact us for additional information.
Technical Datasheet
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Micro Z™ Zeolite Filter Media
High performance granular filter media that outperforms conventional multimedia due to its unique zeolite structure, 2.8 x the load capacity of sand. Micro Z™ media is capable of handle higher service flow rate and increased load capacity. 1 cu.ft., 55lbs. Per bag, 40 bags per pallet
MICRO Z Features and Benefits:
- Higher solids loading capacity
- Removes finer particles
- Reduced backwash frequency
- Reduces pressure drop
- Provides higher flow rates
- Light weight
- Reduces shipping costs
- Easy to handle
MICRO Z vs. Conventional Filter Media:
Media Nominal Micron Rating Loading Capacity Sand 20 1.0X Sand & Anthracite 15 1.4X Multimedia 12 1.06X Micro Z 5 2.8X Water Tech Micro Z filter tanks and systems are also available in all sizes.
Please refer to our technical datasheets, or contact us for additional information.
Technical Datasheet
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Sand, Gravel, Anthracite & Garnet
Reliable Suspended Solids (TSS) and Turbidity Removal
Water Tech high quality anthracite, sand, garnet, and gravel filter multi-media, and engineered filter systems provide reliable removal of suspended solids and turbidity in water treatment applications.
Multimedia water filters utilize anthracite, sand, gravel, and garnet with a gravel under bed, chosen for their distinct density and size differences. Anthracite - the lightest, most course media at the top, sand in the middle, and garnet - the heaviest, finest media at the bottom.
This filtration layering allows the largest contaminants to be trapped in the top filter layer, with smaller particulates sifting farther down into the lower layers, providing more efficient turbidity removal and longer run times between backwash cycles. A sand-only filter filters particles to about 20-25 microns in size, and a multi-media filter to about 10-20 microns.
Water Tech coagulants can also be applied upstream of a filter to improve removal of very fine particles through “direct filtration” or "agglomeration".
Water Tech also supplies pre-engineered multi-media filter tanks and systems in all sizes.
Please refer to our technical datasheets, or contact us for additional information.
Technical Datasheet
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Filox Iron, (Fe), Manganese (Mn), H2S Odor Removal Media
The Troublesome Trio !
High performance media for iron, hydrogen sulfide, and manganese removal. No oxidizing chemicals needed for regeneration. Filox™ out performs traditional media such as Birm® and Greensand. Highest flow rate of any standard iron removal media, 6 gpm/cu.ft service flow; 12-15 gpm/sq.ft backwash rate.
Filox Features and Benefits Include:
- Superior high efficiency media for filtration and removal capabilities.
- No oxidizing chemicals typically needed for regeneration (Request ORP test requirements).
- High efficiency with 80% manganese dioxide for enhanced performance and capacity.
- Effective, from 6.5 pH to 9.0 pH.
- Highest flow rate of any iron, manganese, hydrogen sulfide removal media.
- 6 gpm / cu.ft service flow.
- Filox systems available with pre-programmed regeneration cycles to optimize water treatment.
Water Tech also supplies pre-engineered Filox filter tanks and systems in all sizes.
Please refer to our technical datasheets, or contact us for additional information.
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Calcite Media pH Neutralizer
Economical Distribution System Corrosion Control
Water Tech Calcite is a naturally occurring, white marble calcium carbonate media used to neutralize acidic or low pH water such as reverse osmosis (RO) permeate, increase pH and reduce corrosion. One advantage of Calcite is that when properly applied, it corrects pH only enough to reach a non-corrosive equilibrium. It does not overcorrect under normal conditions. Upon contact with Calcite, acidic waters slowly dissolve the calcium carbonate to raise the pH which reduces distribution system corrosion and the potential leaching of copper, lead and other metals found in plumbing systems.
General Operating Conditions:
- Gravel support bed recommended
- Water pH range: 5.0-7.0
- Bed depth: 24-30 in.
- Freeboard: 50% of bed depth (min.)
- Backwash rate: 8-12 gpm/sq. ft.
- Service flow rate: 3-6 gpm/sq. ft.
Water Tech also supplies pre-engineered calcite filter tanks and systems in all sizes.
Please contact us for additional information.
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Ion Exchange (IX) Resins
Dow Dowex, Amberlite, Purolite, Alamo, and Other Resins
Ion exchange (IX) is the exchange of ions between a solid substance called a resin, and an aqueous solution such as potable, boiler feed, or industrial process water, to control water purity and pH by removing undesirable ions and replacing them with acceptable ones.
Cation exchange resins exchange and remove positive ions such as calcium (Ca+2) and Magnesium (Mg+2) hardness, Fe+2, and H+1. Anion exchange resins exchange and remove negative ions such as alkalinity, Cl-1, SO4-2, and OH-1.
Our world-class Dow Dowex, Amberlite, Purolite, Alamo, and other ion exchange resins serve applications as diverse as industrial water softening and demineralization, pharmaceuticals, sweetener purification, mining and more. Our ion exchange resins come in a variety of chemical compositions, polymer structures, and particle sizes to meet current and developing industry needs and requirements.
Applications Include:
- Buildings & Institutions
- Food & Beverage
- Mining & Hydrometallurgy
- Municipal
- Oil & Gas
- Power Generation
- Industrial Water Treatment
- Residential
- Microelectronics
- Healthcare
- Chemical & Petrochemical
Water Tech also supplies pre-engineered ion exchange and softener systems in all sizes.
Please refer to our technical datasheets, or contact us for additional information.
Technical Datasheet