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Urban sewage advanced treatment system and method

A technology for advanced treatment of urban sewage, applied in multi-stage water/sewage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as difficult coexistence, achieve good effluent quality and reduce aeration Energy consumption, the effect of solving competition problems

Pending Publication Date: 2022-05-13
中建生态环境集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a system and method for the advanced treatment of urban sewage, which has a simple process flow, can solve the problems such as the difficult coexistence of short-range nitrification-anammox and biological phosphorus removal, realize the synchronous deep removal of nitrogen and phosphorus, and have Advantages of short-range nitrification and anaerobic ammonia oxidation

Method used

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  • Urban sewage advanced treatment system and method

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Embodiment 1

[0031] Such as figure 1 As shown, the urban sewage advanced treatment system of the present embodiment comprises an AAO system, an intermediate sedimentation tank 6, a sludge fermentation system, a BCO system and an anammox system, and the water inlet of the AAO system is communicated with the raw water tank 2, and the outlet of the AAO system The water inlet is connected with the water inlet of the intermediate sedimentation tank 6, the water outlet of the intermediate sedimentation tank 6 is connected with the water inlet of the BCO system, the sludge outlet of the intermediate sedimentation tank 6 is connected with the mud inlet of the sludge fermentation system, and the sludge fermentation system The discharge port of the sludge fermentation liquid storage tank is connected with the water inlet of the BCO system, and the water outlet of the BCO system is connected with the water inlet of the anaerobic ammonium oxidation system.

[0032] The raw water tank 2 is arranged at ...

Embodiment 2

[0041] The advanced treatment method for urban sewage in this embodiment uses the advanced treatment system for urban sewage in Embodiment 1 to perform advanced treatment on urban sewage. combine figure 1 As shown, the treatment method of this embodiment includes: sending urban sewage to the AAO system for treatment, and the effluent of the AAO system enters the BCO system for treatment after being settled in the intermediate sedimentation tank 6, and after the AAO system and the BCO system run stably, start the sludge The fermentation system sends the sludge fermentation liquid to the BCO system, and the effluent from the BCO system enters the anaerobic ammonium oxidation system for treatment; especially, during the treatment process, part of the sludge in the intermediate sedimentation tank 6 is returned to the anaerobic reaction of the AAO system Zone 3; return part of the nitrification solution in the precipitation zone of the BCO system to the anoxic reaction zone 4 of th...

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Abstract

The invention provides an urban sewage advanced treatment system and method. The urban sewage advanced treatment system comprises an AAO system, an intermediate sedimentation tank, a sludge fermentation system, a BCO system and an anaerobic ammonia oxidation system, a water inlet of the AAO system is communicated with a raw water tank, a water outlet of the AAO system is communicated with a water inlet of the intermediate sedimentation tank, a water outlet of the intermediate sedimentation tank is communicated with a water inlet of the BCO system, and a water outlet of the BCO system is communicated with a water outlet of the raw water tank. A sludge outlet of the middle sedimentation tank is communicated with a sludge inlet of the sludge fermentation system, a liquid outlet of a sludge fermentation liquid storage tank in the sludge fermentation system is communicated with a water inlet of the BCO system, and a water outlet of the BCO system is communicated with a water inlet of the anaerobic ammonia oxidation system. The urban sewage advanced treatment system and method are simple in technological process, the problem that short-cut nitrification-anaerobic ammonia oxidation and biological phosphorus removal are difficult to coexist can be solved, synchronous deep removal of nitrogen and phosphorus is achieved, and the system and method have the advantages of short-cut nitrification, anaerobic ammonia oxidation and the like.

Description

technical field [0001] The invention relates to the technical field of urban sewage treatment, in particular to a system and method for advanced treatment of urban sewage. Background technique [0002] Urban sewage refers to domestic sewage, industrial wastewater and runoff sewage in urban areas. It is generally collected by urban pipes and canals and should be treated by urban sewage treatment plants before being discharged into water bodies. Urban sewage contains a large amount of organic matter, suspended solids, nitrogen and phosphorus, among which the content of nitrogen and phosphorus is one of the important indicators of sewage water quality. In the process of sewage biochemical treatment, the metabolism of microorganisms needs to consume a certain amount of nitrogen and phosphorus. If nitrogen, The discharge of phosphorus into the water body will lead to the excessive growth of algae in the water body, and then cause problems such as eutrophication. [0003] At pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F11/02C02F101/10C02F101/16
CPCC02F9/00C02F11/02C02F3/14C02F3/28C02F1/52C02F2101/16C02F2101/105
Inventor 夏杨陈康宁刘晓静赵立宁王文强朱明康晨亮方克华
Owner 中建生态环境集团有限公司
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