WECO A600E-1354 Backwashing Filter with A600E Anion-Exchange Resin for Alkalinity and Nitrate Reduction

WECO Backwashing Filter with A600E Ion-Exchange Resin for Alkalinity and Nitrate Removal

The WECO Backwashing filter with A600E ion-exchange resin is a Point-Of-Entry (POE) filtration system for municipal and well water supplies. The main application of this filter system is removal of alkalinity, nitrate and uranium form well and municipal water supplies. The WECO system is compatible with residential, industrial, institutional and medical water supplies. This silica removal system can be used stand-alone or in conjunction with other WECO filtration systems. Other applications for this filtration system are:

• Uranium removal

WECO backwashing filters are available in a variety of sizes. Please consult with WECO Technical Support for assistance in selecting the proper size filter to meet your water purification requirements.

A600E is a Strong Base polystyrene gel crosslinked with DVB (divinylbenzene) anion ion exchange resin. It is a Type I strong base resin supplied in the chloride form. A600E resin is highly selective for the removal of alkalinity and nitrate in municipal and well water supplies. The ion-exchange resin is manufactured for drinking water and food plant applications. A600E gel resin beads have a high removal capacity and efficient regeneration properties. Pressure drop remains low and backwashing requirements are minimized. The resin is typically regenerated with caustic soda.

The alkalinity of water is determined by the soil and bedrock through which it passes. The main sources for natural alkalinity are rocks which contain carbonate and bicarbonate compounds. For example, limestone is rich in carbonates, so water flowing through limestone deposits generally have high alkalinity. Carbonates will also be found in the water after lime soda has been used to soften the water. Bicarbonates are the most common sources of alkalinity. Alkalinity is often related to water hardness because the main source of alkalinity is usually from carbonate rocks (limestone) which are mostly calcium carbonate (CaCO₃). Dissolved calcium and magnesium carbonates are primarily responsible for most scaling in pipes, water heaters, boilers and other manufacturing processes. Carbonate precipitation and scaling cause numerous problems in residential and commercial laundries, kitchens, and baths.

The WECO backwashing filter consists of a Structural Poly Glass™ pressure tank and a Fleck 5810 XTR2 touch screen controller. Structural Poly Glass™ is the ideal filter media tank for residential and industrial water filtration and conditioning duty. The pressure tank has an attractive stainless-steel outer jacket for good looks, and durability. This combination provides unmatched strength and chemical resistance for years of trouble-free service. The slim diameter makes installation easy in tight locations and does not take up a lot of floor space. The Fleck XTR2 controller is constructed of a fiber-reinforced polymer valve body for superior strength and durability. It is non-corrosive and UV-resistant. The controller uses an optical sensor for precision cycle positioning. The controller is easily programmed and user-friendly due to detailed screen descriptions, color LCD display, and familiar icons. The intuitive navigation is easy with a large LCD screen. The controller has an internal memory that remembers your settings during a power failure. It has a convenient Vacation Mode to save water when not in use. The password lock-out prevents unauthorized users from changing the settings. An audible alarm sounds if there is a controller

error. Diagnostics can be downloaded via USB should the need arise. The Fleck XTR2 controller has feature rich diagnostics including:

• Current Flow Rate
• Peak Flow Rate (can be reset)
• Totalizer (can be reset)
• Last Regeneration
• Daily usage for last four weeks
• Software Version
• Number of Regenerations
• Regeneration Interval
• Usage since last regeneration
• Last program change

Water enters the top of the tank through the Fleck control valve and passes downward through the A600E resin. The WECO backwashing filter will clean itself periodically by rinsing away solid impurities that can plug the resin bed. The control valve automatically starts the backwash process. The backwash procedure is an operation where water passes backward through the filter media at a fast flow rate. It enters the tank at the bottom through the riser tube, then flows upward through the filter medium, exiting at the control valve and sent to waste. The rapid, turbulent upward waterflow, in addition to flushing away particulate matter, loosens and resettles the media bed. A regeneration cycle flushes the resin bed with caustic to strip off alkalinity (or other anions) and load the resin’s exchange sites with OH ions, preparing it for another filtration cycle. The treated and conditioned water enters the riser tube at the bottom of the mineral tank, passing upward and exiting the filter through the control valve.

Resin Certification:

• Certified to NSF/ANSI-61 Standard
• FDA-compliant for contact with food

Controller Certifications:

• Tested and Certified by the WQA to NSF/ANSI Standard 44 for Water Softener Performance.
• Tested and Certified by the WQA to NSF/ANSI Standard 372 for Lead Free Compliance.

NSF Tank Certifications:

• Safety factor: 4:1
• Minimum burst at 600 psi
• Tested to 100,000 cycles without leakage

Residential tanks 6"-16" in diameter are Certified to NSF 44

• Maximum operating pressure: 150 psi
• Maximum operating temperature: 120° F

Vessels tested and certified by the Water Quality Association (WQA) to NSF/ANSI Std. 44 for material safety and structural integrity requirements and Std. 372 for low lead compliance.

VALVE SPECIFICATIONS

Valve Material Fiber-reinforced polymer

Inlet/Outlet 1"

Cycles 3-5

FLOW RATES (50 PSI INLET) – VALVE ALONE

Continuous (15 psi drop) 36 GPM

Cv (flow at 1 psi drop) 5.4

Max. Backwash (25 psi drop) 28 GPM

REGENERATION

Downflow/Upflow Both

Adjustable Cycles Yes

Time Available XTR2: 0-240 minutes per cycle

METER INFORMATION

Meter Accuracy .25 - 15 GPM +/-5%

Meter Capacity Range (gal.) LXT: volume calculated XTR2: 1-99,999,999