By American Water Works Association
This handbook presents details on electrodialysis and electrodialysis reversal applied sciences in water treatment.
This essentially written handbook explains rules of operation, functions for water remedy, apparatus, procedure layout, expenses, pretreatment and posttreatment, deploy, operation, upkeep, and disposal of focus
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Extra info for Electrodialysis and Electrodialysis Reversal
A stack maintenance log sheet should be used when this procedure is performed. The operator needs the following equipment to probe the stacks: rubber gloves, safety glasses, a utility water hose, a hand-held voltmeter, and the stack probes. The following procedure requires working on stacks that are electrically live. The operator should always wear rubber gloves and never touch the side of the stack directly. Step 1 Stop the ED or EDR unit and wait for the flush cycle to complete. Step 2 Remove the stack siding.
15 mgd = 150,000 gpd Methods of Concentrate Disposal The following paragraphs describe current methods of concentrate disposal. Regulations vary for disposal, and the best option for one situation may not be appropriate for another. Surface water. Concentrate disposal to surface water includes transportation to ocean outfalls or tidal waters or to nonsaline waters. This method is considered the most cost-effective disposal approach. However, increasing regulations may make discharge to surface waters less feasible.
Remove and inspect the grounding-rod assemblies. If rods are scaled, clean them by immersing them in half-strength hydrochloric acid. Replace any damaged or corroded rods. Drain the degasifier tank and flush out any accumulations of scale. Lubricate pump motors as required. Check the operation of the electrode CIP pumps. Check the tightness of all electrical connections. Calibrate all instruments and gauges. Stack Probing Probing the stacks should be done weekly to monthly, or as required for troubleshooting purposes.