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Improved combined high-efficiency water treatment method and system for nitrogen and phosphorus removal

A treatment method and technology for denitrification and phosphorus removal, applied in the field of water treatment, can solve the problems of increasing the complexity of the system, restricting the efficiency and stability of the process, and increasing the cost of infrastructure and operation, so as to eliminate adverse effects and reduce excess dissolved oxygen. , the effect of reducing carbon source consumption

Active Publication Date: 2017-05-31
SDIC XINKAI WATER ENVIRONMENT INVESTMENT CO LTD
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Problems solved by technology

[0018] Although the traditional nitrogen and phosphorus removal technologies have their own characteristics, these technologies have certain defects, which restrict the efficiency and stability of the process, and many processes include multiple sludge and mixed liquor backflows, which increase the Increased the complexity of the system, greatly increasing the cost of infrastructure and operation

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  • Improved combined high-efficiency water treatment method and system for nitrogen and phosphorus removal

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Embodiment 1

[0186] image 3 For a specific embodiment of the present invention, such as image 3 Shown is an improved composite high-efficiency nitrogen and phosphorus removal bioreactor treatment, the reactor includes: pre-anoxic zone 1 and anaerobic zone 2, the first anoxic zone 3, the first aerobic zone 4 (containing suspended filler zone), second anoxic zone 5, second aerobic zone 6 (including suspended filler zone), degassing zone 7, sedimentation zone 8, water inlet channel 9, water outlet 10, sludge outlet channel 11 (including return sludge channel 11a and excess sludge discharge channel 11b); the reactor is rectangular as a whole, and each reaction channel is also rectangular; water inlet weirs and control gates are respectively set on the water inlet channel 9 to distribute the sewage to the pre-anoxic zone 1, anaerobic Zone 2, the first anoxic zone 3 and the second anoxic zone 5; the pre-anoxic zone 1 is separated by the diversion partition wall 12 of the pre-anoxic zone, and ...

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Abstract

The invention provides an improved combined high-efficiency water treatment method for nitrogen and phosphorus removal. The method comprises the following steps: (1) mixing at least part of water to be treated with sludge for hypoxic preconditioning treatment; (2) performing anaerobic treatment on the water obtained after the hypoxic preconditioning treatment; (3) alternately performing anoxic treatment and aerobic treatment on the water obtained after the anaerobic treatment; (4) performing degassing treatment on the water obtained in step (3); and (5) performing precipitation treatment on the water obtained after the degreasing treatment. The improved combined high-efficiency water treatment method and system for nitrogen and phosphorus removal provided by the invention can optimize the water quality, and have the advantages of low cost, high efficiency, and the like.

Description

technical field [0001] The present invention relates to the field of water treatment, in particular to an improved composite high-efficiency water body treatment method and system for denitrification and phosphorus removal, and the water treatment system can be used as an improved composite high-efficiency nitrogen and phosphorus removal biological reaction device. Background technique [0002] With the acceleration of urban development and industrialization, sewage treatment has become a hot environmental issue that people focus on. A large amount of domestic sewage, industrial wastewater and farmland surface water runoff flow into lakes, rivers, reservoirs and bay waters, causing algae and other plants to multiply, thus forming water body eutrophication. For countries such as my country, where water resources are already in short supply, it is necessary to strictly control the excessive discharge of nitrogen and phosphorus sewage. The technologies for nitrogen and phospho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/30Y02W10/10
Inventor 桂新安叶方清盛倩戴杨叶洪士杰
Owner SDIC XINKAI WATER ENVIRONMENT INVESTMENT CO LTD
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