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1. (WO2018198422) MEMBRANE-SEPARATION ACTIVATED SLUDGE TREATMENT DEVICE AND MEMBRANE-SEPARATION ACTIVATED SLUDGE TREATMENT METHOD

Pub. No.:    WO/2018/198422    International Application No.:    PCT/JP2017/045050
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Dec 16 00:59:59 CET 2017
IPC: C02F 3/30
C02F 1/44
C02F 3/34
Applicants: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
国立大学法人北海道大学
MAEZAWA INDUSTRIES, INC.
前澤工業株式会社
Inventors: KIMURA, Katsuki
木村 克輝
ISHIDA, Susumu
石田 進
ZHANG, Liang
張 亮
TSUMURAYA, Terumi
円谷 輝美
MIYOSHI, Taro
三好 太郎
Title: MEMBRANE-SEPARATION ACTIVATED SLUDGE TREATMENT DEVICE AND MEMBRANE-SEPARATION ACTIVATED SLUDGE TREATMENT METHOD
Abstract:
[Problem] The purpose of the present invention is to provide a membrane-separation activated sludge treatment device and method in which nitrogen removal efficiency is further improved and which is highly applicable even with respect to load fluctuations in the amount of influent wastewater, the device and method furthermore making it possible to greatly reduce the treatment time in a reaction tank (HRT) and being usable in medium- and large-scale wastewater treatment facilities, etc. [Solution] Provided are: a membrane-separation activated sludge treatment device having a single reaction tank for performing an aerobic treatment and an anaerobic treatment, an immersion membrane separation unit disposed within the reaction tank, and an aeration means, wherein the reaction tank is divided into a plurality of compartments by a partition plate, at least one compartment from among the plurality of compartments is an aerobic compartment, the remaining compartments are compartments for performing at least an anaerobic treatment, and there is provided a circulation water amount regulation means or a water flow generation means; and a membrane-separation activated sludge treatment method in which the aforementioned device is used.