anion exchange Articles
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Anion exchange pretreatment for the removal of natural organic matter from humic rich water
The treatment of humic rich water using anion exchange, coagulation and PAC-adsorption was studied, both independently and in sequence in that order. The commercial aluminium-based coagulant PAX-16, powdered activated carbon W35 and the magnetic ion exchange resin (MIEX®) were used in the study. The source of humic substances was natural water (25.0 g C/m3 as DOC) flowing out from the Great ...
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Assessing UV- and fluorescence-based metrics as disinfection byproduct precursor surrogate parameters in a water body influenced by a heavy rainfall event
Although disinfection byproducts (DBPs) were discovered decades ago and surrogate parameters have been developed to track their precursors, the accuracy of these metrics in waters impacted by heavy rainfall events is largely unknown. We measured DBPs and their precursor surrogate parameters in a water body impacted by 28 cm of rain between 4/24/11 and 4/26/11. Raw waters collected from four ...
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Comparison of anion exchange resins and aluminum-based coagulants for natural organic matter (NOM) removal and disinfection by-product (DBP) formation
Anion exchange resins (AERs) were compared with aluminum-based coagulants for reducing disinfection by-product (DBP) precursor concentrations from a source water collected in northeast Ohio, USA. Three AERs (IRA-910, IRA-958, and MIEX) were evaluated to determine which resin would remove the most natural organic matter (NOM) and moieties responsible for DBP formation. All the AERs were found to ...
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Applicability of ion exchange for NOM removal from a sulfate-rich surface water incorporating full reuse of the brine
The raw water of water treatment works ‘the Blankaart’ (Belgium) is characterized by high levels of NOM (Natural Organic Matter), alkalinity and sulfate. From 2006 until present, the possibility of applying fluidized ion exchange for NOM removal has been investigated at the plant. Pilot testing using Miex® (Magnetic Ion Exchange) resin demonstrated that under standard ...
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Enhanced Coagulation Using a Magnetic Ion Exchange Resin
The objective of this investigation was to examine the effectiveness of a magnetic ion exchange resin (IVIIEXR) provided by ORICA Australia Pty Ltd. of Victoria, Australia to enhance the coagulation of disinfection by-product (DBP) precursors. The IVIIE)C resin purportedly adsorbs natural organic material, thereby lowering the coagulant demand of the water, as well as lowering its DBP formation ...
By Ixom
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Application of Magnetized Anion Exchange Resin for Removal of DOC at the Coldiron Watkins Memorial Water Treatment Plant in Danville, KY
According to data gathered by the Information Collection Rule1, surface water treatment plants (SWTPs) can expect treated-water total haloacetic acid concentrations to be less than total trihalomethane (TTHM) concentrations. However, many SWTPs are plagued with distribution system haloacetic acid (HAA5) concentrations that are higher than TTHM concentrations. The 10 million gallons per day (MGD) ...
By Ixom
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