Distributed rural domestic sewage low-energy-consumption integrated treatment equipment

Abstract

The invention discloses distributed rural domestic sewage low-energy-consumption integrated treatment equipment, and belongs to the technical field of water treatment. The equipment comprises an integrated box-shaped main body, wherein the interior of the integrated box-shaped main body is sequentially divided into an anoxic tank, an aerobic tank, a sedimentation tank and an equipment room by separation walls along a sewage flowing direction, the anoxic tank and the aerobic tank are filled with biological fillers, the nitrification liquid in the aerobic tank flows back to the anoxic tank in agas stripping manner so as to achieve the denitrification function, the active biological membrane in the aerobic tank degrades COD, ammonia nitrogen, total phosphorus and other pollutants while utilizes oxygen, mud-water separation is achieved through a structure form forming by matching the mud bucket plate with holes of the sedimentation tank and a mud baffle and an internal inclined pipe, supernatant is discharged through an effluent weir, and effluent can reach the first-level B standard of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant. A purpose of the invention is to provide distributed rural domestic sewage low-energy-consumption integrated treatment equipment having characteristics of simple and compact structure, small occupation area, low energy consumption and high treatment efficiency and used for sewage treatment.

Description

technical field [0001] The invention relates to a water treatment structure, and more specifically, to a decentralized low-energy consumption integrated treatment equipment for domestic sewage in rural areas. Background technique [0002] In the process selection of sewage treatment equipment, the AO process is simple in form and efficient in treatment, especially in the treatment of COD and ammonia nitrogen, so AO is generally the most commonly used choice. However, in the AO process, there are anoxic tanks that are prone to sludge sedimentation, resulting in sludge accumulation. Traditional aeration discs for aeration in aerobic tanks can easily lead to too concentrated aeration, resulting in oxygen not being well dissolved in water to supply oxygen to microorganisms. The nitrification liquid adopts the backflow of the water pump, which leads to high energy consumption, and the metabolism or activity of phosphorus accumulating bacteria is disturbed or inhibited, resulting ...

AI Technical Summary

Problems solved by technology

However, in the AO process, there are anoxic tanks that are prone to sludge sedimentation, resulting in sludge accumulation. Traditional aeration discs for aeration in aerobic tanks can easily lead to too concentrated aeration, resulting in oxygen not being well dissolved in water to supply oxygen to microorganisms. The nitrification liquid adopts the backflow of the water pump, which leads to high energy consumption, and the metabolism or activity of phosphorus accumulating bacteria is disturbed or inhibited, resulting in poor biological phosphorus removal effect.

At the same time, the traditional sedimentation tank structure model uses a conical bucket, which has a large area and low sedimentation efficiency

Therefore, although the traditional AO process is widely used, there are still problems such as sludge sedimentation in the anoxic tank, uneven aeration in the aerobic tank, low sedimentation efficiency in the sedimentation tank, high energy consumption, and poor stability and flexibility of biological phosphorus removal.

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