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Sewage disposal system with biological phosphorus removal and chemical phosphorus removal bypass and disposal method

A sewage treatment system, chemical phosphorus removal technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of low biological phosphorus removal efficiency and pure chemical phosphorus removal operation According to problems such as high cost, achieve the effect of phosphorus removal and stability, realize the resource recovery of phosphorus, and improve the effect of phosphorus removal rate

Inactive Publication Date: 2009-03-11
BEIJING YIPU INT WATER AFFAIRS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention provides a sewage treatment system and treatment method with biological phosphorus removal and side channel chemical phosphorus removal. By organically combining biological phosphorus removal and chemical phosphorus According to the shortcomings of high phosphorus removal operation cost, it can achieve better phosphorus removal effect with lower cost

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  • Sewage disposal system with biological phosphorus removal and chemical phosphorus removal bypass and disposal method

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Embodiment

[0029] Such as figure 1 As shown, this embodiment provides a sewage treatment system with biological phosphorus removal and side-channel chemical phosphorus removal. The system uses biological nitrogen and phosphorus removal while adding side-channel chemical phosphorus removal, which effectively improves the efficiency of biological phosphorus removal. Effect, the system specifically includes: denitrification and phosphorus removal subsystem and side channel phosphorus removal subsystem, wherein, the nitrogen and phosphorus removal subsystem is composed of anaerobic tank 1, anoxic tank 2, aeration tank 3, sedimentation tank 4. The sludge return tank 5 and the sludge return pump 6 are connected in sequence to form an anaerobic-anoxic-aerobic denitrification and phosphorus removal subsystem, wherein the outlet of the sludge return tank 5 passes through the sludge return pump 6 and the pipeline Connect back to the sewage inlet of the anaerobic tank 1; the outlet pipe of the aera...

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Abstract

The invention discloses a system and a method for treating sewage with biological phosphorus removal and bypath chemical phosphorus removal. The system comprises a nitrogen-phosphorus removal subsystem and a bypath phosphorus removal subsystem, wherein the nitrogen-phosphorus removal subsystem is formed by connecting an anaerobic tank, an anoxic tank, an aeration tank, a sedimentation tank, a sludge return tank and a sludge return pump in turn, wherein the water outlet of the sludge return tank is connected to a sewage inlet of the anaerobic tank through a sludge return pump via pipelines; the bypath phosphorus removal subsystem is formed by connecting a mixing tank, an anaerobic phosphorus release sedimentation tank, a mixing reaction tank and a second sedimentation tank in turn; and the water outlet of the sludge return tank of the nitrogen-phosphorus removal subsystem is communicated with the water inlet of the mixing tank through the sludge return pump. The treatment system is simple in structure, organically combines the biological phosphorus removal with the chemical phosphorus removal, effectively solves the disadvantages that the biological phosphorus removal is low in efficiency and the pure chemical phosphorus removal remains high in operation cost, and has the advantages of good phosphorus removal effect and less medicament cost than the pure chemical phosphorus removal.

Description

technical field [0001] The invention relates to a sewage treatment technology, in particular to a 2 / O Sewage treatment system and treatment method combining biological phosphorus removal and nitrogen removal process with enhanced phosphorus removal or recovery process. Background technique [0002] Phosphorus is an important factor for eutrophication of water bodies, and it is also an element that has a nearly one-way cycle in nature. Due to the mining of phosphate rock and the almost one-way cycle of phosphorus in nature, phosphorus resources are increasingly depleted. Appropriate treatment technology and effective recovery methods can not only effectively control the eutrophication of water bodies, but also obtain available phosphorus resources, which is of great significance to prolong the service life of phosphorus rock resources. [0003] There are mainly three methods for removing phosphorus nutrients in the prior art, namely chemical methods, biological methods and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/30C02F1/52
Inventor 李天增张宝林王发珍陈长松侯霖霁文嘉王艳
Owner BEIJING YIPU INT WATER AFFAIRS
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