Search International and National Patent Collections
|1. (WO2018198422) MEMBRANE-SEPARATION ACTIVATED SLUDGE TREATMENT DEVICE AND MEMBRANE-SEPARATION ACTIVATED SLUDGE TREATMENT METHOD|
|Applicants:||NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
MAEZAWA INDUSTRIES, INC.
|Title:||MEMBRANE-SEPARATION ACTIVATED SLUDGE TREATMENT DEVICE AND MEMBRANE-SEPARATION ACTIVATED SLUDGE TREATMENT METHOD|
[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.