Integrated sewage biochemical treatment device

Abstract

The invention discloses an integrated sewage biochemical treatment device, and belongs to the field of sewage treatment. According to the technical scheme, the integrated sewage biochemical treatmentdevice is characterized by comprising a first treatment unit, a second treatment unit, a third treatment unit and a fourth treatment unit which are arranged in the sewage circulation direction and allow sewage to circulate; the second treatment unit and the fourth treatment unit are arranged side by side, and a sedimentation tank for isolating the second treatment unit from the fourth treatment unit is arranged between the second treatment unit and the fourth treatment unit; wherein the first treatment unit comprises at least one first-stage anoxic tank, the second treatment unit comprises atleast one first-stage aerobic tank, the third treatment unit comprises at least one second-stage anoxic tank, and the fourth treatment unit comprises at least one second-stage aerobic tank; aeration pipes are arranged in the first-stage aerobic tank and the second-stage aerobic tank. The problem that small-scale sewage treatment plants are high in construction and operation cost is solved.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an integrated sewage biochemical treatment device. Background technique [0002] With the increasingly stringent environmental protection regulations in my country and the increasing demand for ecological environment, the control of COD, total nitrogen and total phosphorus in various large and small sewage treatment plants (stations) is also getting higher and higher, and some sensitive areas have begun to implement higher level A Stricter local and regional drainage standards, such as total nitrogen ≤ 10mg / L, COD ≤ 30mg / L, etc. [0003] Under the premise of the new standard requirements, some old factories have not only upgraded and upgraded the original biochemical devices, but also added deep denitrification process devices such as denitrification filters to ensure that the total nitrogen reaches the standard. , and achieved many successful cases. For the sake of insurance, so...

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Problems solved by technology

For the sake of insurance, some newly-built sewage plants have also followed the above-mentioned main process settings and adopted the main process flow of traditional biochemical process equipment + deep denitrification process equipment for construction, which not only resulted in high construction investment, but also a long process flow , more process devices will also lead to higher management costs

[0004] Especially some smaller ones, such as 500m 3 If the sewage treatment plants at the village and town level below / d still adopt the above-mentioned main technological process for construction by CCB, the construction cost and management cost will be very high and unbearable

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