WASTEWATER TREATMENT SYSTEM

• Main Authors: ITO YOSHIAKI, EGAWA KAORU, FUKUDA TOSHIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 17.10.2022
• Subjects: CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

To provide a wastewater treatment system capable of reducing a cost of regeneration treatment of a desalination apparatus.SOLUTION: A wastewater treatment system for treating regenerated wastewater generated by regenerating a desalination apparatus which performs desalination of water containing ammonia using an acidic aqueous solution is provided with a bipolar membrane electrodialysis device which separates, as the acidic aqueous solution, a solution containing the same acidic solute as the acidic aqueous solution from regenerated wastewater containing ammonium salt generated by the reaction between ammonia captured in the desalination apparatus and an acidic aqueous solution or a liquid derived from the regenerated wastewater. The regenerated acidic aqueous solution is used as at least part of the acidic aqueous solution for regeneration of the desalination apparatus.SELECTED DRAWING: Figure 1 【課題】脱塩装置の再生処理のコストを低減できる排水処理システムを提供する。【解決手段】アンモニアを含む水を脱塩する脱塩装置を酸性水溶液を使用して再生処理することによって発生した再生排水を処理するための排水処理システムは、脱塩装置に捕捉されたアンモニアと酸性水溶液との反応で生成したアンモニウム塩を含む再生排水又は再生排水に由来する液体から、酸性水溶液と同じ酸性溶質を含む水溶液を再生酸性水溶液として分離するバイポーラ膜電気透析器を備え、再生酸性水溶液は酸性水溶液の少なくとも一部として脱塩装置の再生に使用されるように構成されている。【選択図】図１