Saltworks Technologies Conducts Successful Coal-Power Wastewater Pilot

Jun 11 14:06 2019 Print This Article

B.C.’s Saltworks Technologies has announced that it successfully concluded a sixty-day on-site pilot at a major US coal fired power plant treating flue gas desulfurization (FGD) wastewater.

The project achieved 100 per cent up-time during the pilot period. Treating the FGD wastewater required selectively removing chlorides for recycle and re-use internal to the coal stack scrubber system. By targeting the key concern—chlorides—this selective removal method provides an alternative to expensive complex treatments for discharge.

The pilot included a full scale Saltworks’ Flex EDR Selective Stack, which acts as a chloride kidney, as the company describes it. Within the stack, Saltworks’ novel monovalent selective anion exchange membranes pull chlorides out of the FGD wastewater under a DC electric field.

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