Kitchen waste wastewater treatment device and treatment method thereof

Abstract

The invention discloses a kitchen waste wastewater treatment device. A regulating tank is connected to a denitrification tank through combination of an up-flow anaerobic sludge bed (USAB) and a membrane bioreactor, wherein the denitrification tank is connected to an ultra-filtration membrane purification processor through a nitrification tank; the combination of the USAB and the membrane bioreactor, the denitrification tank, the nitrification tank and the ultra-filtration membrane purification processor are connected to an input port of a mud storage tank; the mud storage tank and a dehydrator are also connected to the denitrification tank. The treatment method comprises the following steps: 1) treating wastewater in the regulating tank through the combination of the USAB and the membrane bioreactor, directly processing the treated wastewater part in the denitrification tank and directly supplying the other part in the mud storage tank; 2) feeding one part of the wastewater treated by the denitrification tank into the nitrification tank and feeding the other part into the mud storage tank; 3) processing one part of the wastewater treated by the nitrification tank through the ultra-filtration membrane purification processor and feeding the other part into the mud storage tank; 4) feeding the wastewater which is treated by the ultra-filtration membrane purification processor and does not achieve an emission standard into the mud storage tank; 5) delivering the wastewater treated in the previous step into the dehydrator; 6) returning and processing supernatant liquid and filtrate in the denitrification tank, and composting mud cakes.

Description

technical field [0001] The invention belongs to the technical field of kitchen garbage wastewater treatment, and in particular relates to a kitchen garbage wastewater treatment device and a treatment method thereof. Background technique [0002] Food waste wastewater and fecal wastewater belong to CODcr and BOD 5 High-concentration organic wastewater with high content and good biodegradability, with the gradual improvement of the living standards of Chinese residents, the phenomenon of waste on the table is becoming more and more serious, and the amount of kitchen waste is increasing rapidly [1]. Because the kitchen waste is a solid-liquid mixture, the liquid kitchen waste water should be separated from the solid kitchen waste, and then the solid waste and liquid waste water should be treated separately. At present, domestic and foreign scholars' research on kitchen waste mainly focuses on the treatment of solid kitchen waste, and there are few reports on the treatment of l...

AI Technical Summary

Problems solved by technology

Due to the high content of oil in the kitchen waste water, the high content of oil will adversely affect the subsequent treatment

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