Equipment and process of denitrifying phosphorus removal coupled vibration anoxic MBR

Abstract

The invention belongs to the field of sewage biological treatment, and particularly relates to equipment of denitrifying phosphorus removal coupled vibration anoxic MBR. The equipment comprises a water inlet tank, an anaerobic tank, a middle settling tank, an aerobic tank and an anoxic tank which communicate in sequence; a stirring device is arranged in the anaerobic tank; a bottom outlet of the middle settling tank is connected with a bottom inlet of the anoxic tank through a sludge transcending pipeline; a filler and an aeration device are arranged in the aerobic tank; an MBR membrane moduleis arranged in the anoxic tank, a bottom outlet of the anoxic tank is connected with a sludge treatment pipeline, and an outlet of the sludge treatment pipeline is divided into two branch pipelines,wherein one branch pipeline is connected with the bottom of the anaerobic tank through a sludge return pipeline, and the other branch pipeline is connected with a remaining sludge pipeline; and the water discharge end of the membrane module is connected with a water discharge pipeline. The technical solution provided by the invention solves the problems of a poor solid-liquid separation effect, alarge number of structures, a long process flow, low reaction efficiency, complicated system control, discontinuous water discharge, high operation energy consumption, and difficulty in controlling ofmembrane fouling.

Description

technical field [0001] The invention belongs to the field of sewage biological treatment, and in particular relates to a denitrification dephosphorization coupling vibration anoxic MBR device and a process. Background technique [0002] As the country pays attention to water resources, water environment and water ecological issues, the problem of water eutrophication has become increasingly prominent. Improving the discharge standards of nitrogen and phosphorus removal in sewage treatment plants is one of the effective measures to prevent the occurrence of water eutrophication. Therefore, the newly revised "Pollutant Discharge Standards for Urban Sewage Treatment Plants" has raised the implementation standards for the effluent water quality of urban sewage treatment plants discharged into key river basins from the original Class B standard to Class A standard. From the traditional primary goal of removing COD, BOD, and suspended matter to the removal of nutrients nitrogen an...

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Problems solved by technology

[0007] At the same time, it also provides a denitrification phosphorus removal coupling vibration anoxic MBR process, which solves the problem of poor solid-liquid separation in the existing process, a large number of structures, lengthy process flow, low reaction efficiency, complex system control, and discontinuous effluent. , high operating energy consumption, difficult to control membrane fouling, etc.

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