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Investigation on biomass performance of a submerged membrane bioreactor for treating soy sauce wastewater

Lv S., Liang Z., Li X., Fan H., Zen Y.

Environment Protection Engineering

2016

Vol. 42, nr 1

135--148

A pilot study for investigating a membrane bioreactor (MBR) performance in treating soy sauce wastewater was divided into three stages. At stage 1, the MBR was operated without excess sludge withdrawal, and pollutants removal increased gradually and entered into a pseudo-stable phase eventually along with increasing mixed liquor suspended solid (MLSS). At stage 2, the growth of biomass and removal of pollutants were obviously decreased by lowering temperature. At stage 3, membrane permeate flux and sludge yield under various MLSSs were studied. Additional polishing steps including coagulation and oxidation were validated to be effective to ensure the treated wastewater to meet the discharge limits.

The study of Treating the Coking Wastewater of Changzhi iron & steel 293 Company by High Concentration activated Sludge Process

Yi X., Cunyi S., Hui Y., Huaxiong Z.

Zeszyty Naukowe. Inżynieria Środowiska / Politechnika Opolska

2003

Vol. 291, z. 4

293-301

The article introduces the high concentration activated sludge process as well as its related characteristics, which, based on the characteristics of the water quality and on the study in the former treatment projects and small-scaled lab experiments, was eventually used in the project of the treatment of 600 000 T per year coking waste water newly constructed by Changzhi steel and iron factory.