Sewage treatment system based on AO-MBBR-inductive coupling filter tank and treatment method thereof

Abstract

The invention discloses a sewage treatment system based on an AO-MBBR-inductive coupling filter tank and a method thereof. The treatment system comprises an anoxic tank, an aerobic tank, a sedimentation tank, a constant-voltage direct-current power supply and a one-stage or multi-stage inductive coupling filter tank, the bottom of the anoxic tank is communicated with the bottom of the aerobic tank, the side wall of the top end of the aerobic tank is communicated with the sedimentation tank, the side wall of the top end of the sedimentation tank is communicated with the inductive coupling filter tank, an electrode matrix is arranged in the inductive coupling filter tank, and the constant-voltage direct-current power supply is electrically connected with the electrode matrix. A second aeration branch pipeline is arranged at the bottom of the inductive coupling filter tank, a perforated baffle plate is horizontally arranged in the inductive coupling filter tank close to the upper part of the second aeration branch pipeline, and aeration main pipes communicated with each other are arranged between the inductive coupling filter tank and the anoxic tank and between the inductive coupling filter tank and the aerobic tank. According to the invention, AO, MBBR and inductively coupled filter technologies are combined to treat pollutants in sewage, nitrogen, phosphorus and organic matters in domestic sewage can be efficiently removed at the same time, and finally, the effluent can reach the standard discharge.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a sewage treatment system and treatment method based on an AO-MBBR-inductive coupling filter. Background technique [0002] my country is a large agricultural country with a large rural population. According to the living habits of rural residents in our country, sewage discharge in villages and towns has the characteristics of small sewage volume, large changes in water quality and quantity, obvious intermittent discharge, and relatively simple sewage components. However, due to the unplanned layout of villages and towns and insufficient government investment, the sewage treatment in rural areas of our country lacks corresponding facilities and equipment, resulting in most of the domestic sewage being discharged directly without treatment. The random discharge of rural domestic sewage not only pollutes groundwater, but also causes nitrogen and phosphorus eut...

AI Technical Summary

Problems solved by technology

However, due to the unplanned layout of villages and towns and insufficient government investment, the sewage treatment in rural areas of our country lacks corresponding facilities and equipment, resulting in most of the domestic sewage being discharged directly without treatment.

The random discharge of rural domestic sewage not only pollutes groundwater, but also causes nitrogen and phosphorus eutrophication in lakes, and even leads to the generation of black and odorous water bodies, which poses a serious threat to the ecological environment. If the existing process is used for treatment, the process is complicated, Large area, high cost, complex management and maintenance, etc.

At present, the decentralized rural sewage treatment system has been widely promoted and applied in engineering. The commonly used processes for the decentralized system in the treatment of rural sewage include AO, A 2 O, MBR, MBBR, etc., the operation and effluent water quality are relatively stable, and some economically developed areas or special water function areas require the treated rural sewage to meet higher water quality requirements, especially the control of nitrogen and phosphorus. However, the commonly used process of the distributed system is limited by the nitrogen and phosphorus removal rate of the biological method when the influent is high in nitrogen and phosphorus. The removal rate of phosphorus can generally only reach 35% to 60%, which is almost difficult Meet Higher Emissions Requirements

Images