WASTEWATER TREATMENT METHOD AND APPARATUS

WASTEWATER TREATMENT METHOD AND APPARATUS

PROBLEM TO BE SOLVED: To easily separate wastewater into an oil phase and a treated water phase by lowering the cloud point of a nonionic surfactant in the wastewater without heating the wastewater; to improve the quality of the obtained treated water. SOLUTION: A nonionic surfactant having a HLB va...

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Hauptverfasser: FUKUDA HIROYUKI, YAMAGUCHI KOICHI, MIYAKE TAKUSHI, TSUJI TAKESHI, KINOSHITA TAKEHIKO, FUCHIGAMI KOJI, NAKAHARA KEISUKE, AKITA SHIGETO
Format: Patent
Sprache:eng
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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 FUKUDA HIROYUKI
YAMAGUCHI KOICHI
MIYAKE TAKUSHI
TSUJI TAKESHI
KINOSHITA TAKEHIKO
FUCHIGAMI KOJI
NAKAHARA KEISUKE
AKITA SHIGETO
description PROBLEM TO BE SOLVED: To easily separate wastewater into an oil phase and a treated water phase by lowering the cloud point of a nonionic surfactant in the wastewater without heating the wastewater; to improve the quality of the obtained treated water. SOLUTION: A nonionic surfactant having a HLB value lower than that of the nonionic surfactant contained in detergent drain in a first mixing tank 1 is added to and mixed with the detergent drain. Subsequently a coagulant is added and mixed in a second mixing tank 3, and the detergent drain is separated into an oil phase mainly comprising pollution components and surfactants, and a clear treated water phase in a settling tank 5. COPYRIGHT: (C)2006,JPO&NCIPI
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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 WASTEWATER TREATMENT METHOD AND APPARATUS
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