JP2877265B

PURPOSE:To decrease the N-S compd. in a dilute liquid and to allow a waste water treatment without lowering the desulfurization performance of desulfurizing equipment by additionally installing a decomposing device or hydrolyzing device which decomposes the N-S compd. contained in the dilute liquid...

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Hauptverfasser:	OKINO SUSUMU, NAKAMURA TSUMORU, UGAWA NAOHIKO, TSUTSUI KOYO, KOTAKE SHINICHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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creator	OKINO SUSUMU NAKAMURA TSUMORU UGAWA NAOHIKO TSUTSUI KOYO KOTAKE SHINICHIRO
description	PURPOSE:To decrease the N-S compd. in a dilute liquid and to allow a waste water treatment without lowering the desulfurization performance of desulfurizing equipment by additionally installing a decomposing device or hydrolyzing device which decomposes the N-S compd. contained in the dilute liquid to a circulating line for the dilute liquid of an electrodialyzer which produces the makeup for the desulfurizing equipment. CONSTITUTION:The waste water from the desulfurizing equipment is stored in a storage tank 1 and is then sent to a sand filter device 2. The waste water from the sand filter device 2 is then supplied to the electrodialyzer 3. The dialysis membrane used for the electrodialysis is formed by using an org. high- polymer copolymer as its base material and cation and anion exchange membranes respectively of a sulfonic acid base and amine base as its active groups. The primary concd. waste water from the electrodialyzer 3 is sent via line (f) to an evaporator 4 and the dilute liquid is partly introduced via a line (t) into the decomposing device 11 for the N-S compd. where the N-S compd. is decomposed by using sodium hypochlorite. The dilute liquid cracking the N-S compd. is again returned via a line W to a line (g).
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CONSTITUTION:The waste water from the desulfurizing equipment is stored in a storage tank 1 and is then sent to a sand filter device 2. The waste water from the sand filter device 2 is then supplied to the electrodialyzer 3. The dialysis membrane used for the electrodialysis is formed by using an org. high- polymer copolymer as its base material and cation and anion exchange membranes respectively of a sulfonic acid base and amine base as its active groups. The primary concd. waste water from the electrodialyzer 3 is sent via line (f) to an evaporator 4 and the dilute liquid is partly introduced via a line (t) into the decomposing device 11 for the N-S compd. where the N-S compd. is decomposed by using sodium hypochlorite. 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subjects	CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
title	JP2877265B
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