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1. (WO2017035891) METHOD AND SYSTEM OF WASTEWATER TREATMENT WITH ZERO DISCHARGE OF SLUDGE

Pub. No.:    WO/2017/035891    International Application No.:    PCT/CN2015/091143
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Wed Sep 30 01:59:59 CEST 2015
IPC: C02F 3/12
C02F 3/34
Applicants: JIANGXI JDL ENVIRONMENTAL PROTECTION CO., LTD.
Inventors: LIAO, Zhimin
ZHOU, Tao
Title: METHOD AND SYSTEM OF WASTEWATER TREATMENT WITH ZERO DISCHARGE OF SLUDGE
Abstract:
A method for wastewater treatment with zero discharge of sludge is provided, which including: a) providing a membrane bioreactor system comprising a membrane separation system (1) and a reaction vessel (2); and b) aerating the membrane separation system (1) and the reaction vessel (2) to control a dissolved oxygen concentration around the membrane separation system (1) to be greater than 0 and smaller than 2 mg/L and the dissolved oxygen concentration in the reaction vessel (2) excluding the membrane separation system (1) to be greater than 0 and smaller than 1 mg/L. A wastewater treatment system with zero discharge of sludge includes a membrane bioreactor system, and the membrane bioreactor system includes a reaction vessel (2), a membrane separation system (1), a water production system, and an aeration system.