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A method for treating sewage with a low carbon-to-nitrogen ratio and a denitrification percolation system

A low-carbon-to-nitrogen ratio, denitrification technology, applied in the field of methods and denitrification infiltration systems, can solve the problems of low carbon-to-nitrogen ratio sewage denitrification efficiency, etc., achieve good total nitrogen removal effect, simple system equipment, and low technical cost low effect

Inactive Publication Date: 2015-12-30
SHENZHEN HONGKONG INSTITUTION OF IND EDUCATION & RES ENVIRONMENTAL ENG TECH CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a method for treating low carbon-to-nitrogen ratio sewage and a denitrification percolation system, aiming at solving the problem of the low efficiency of denitrification in low-carbon-to-nitrogen ratio sewage in the prior art The problem

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  • A method for treating sewage with a low carbon-to-nitrogen ratio and a denitrification percolation system
  • A method for treating sewage with a low carbon-to-nitrogen ratio and a denitrification percolation system
  • A method for treating sewage with a low carbon-to-nitrogen ratio and a denitrification percolation system

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Embodiment

[0047] The denitrification diafiltration system provided by the present invention is applied to the advanced treatment of tail water of a certain sewage treatment plant in Shenzhen City. The influent of the sewage treatment plant is domestic sewage, and the effluent of the sewage treatment plant enters such as figure 1 Shown includes conditioning tank, inlet pump, denitrification tank and sump denitrification percolation system for advanced treatment.

[0048] The water quality of the system inlet water is: COD Cr 20-40mg / L, TN 15-30mg / L, SS 2-10mg / L, pH 6.8-7.5, water temperature 15-25℃.

[0049] The adjustment pool is made up of the clear water pool of the sewage treatment plant. It adopts a brick-concrete structure and is underground. The size is 3m long, 3m wide, 2.5m deep, and the effective volume is 20m 3 . The water inlet end of the lift pump is set in the regulating tank, and the water outlet end is connected to the water distribution device of the denitrification ta...

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Abstract

The invention discloses a method and a denitrification infiltration system for treating sewage with a low carbon-nitrogen ratio. The system comprises a regulating tank, a lifting pump, a denitrification tank and a water collecting tank, wherein the lifting pump is arranged between the regulating tank and the denitrification tank, a water inlet end and a water outlet end are arranged on the lifting pump, the water inlet end of the lifting pump is connected with the regulating tank through a pipeline, and the water outlet end of the lifting pump is connected with the denitrification tank; the denitrification tank is connected with the water collecting tank through a pipeline; a flooding layer, a slow-release carbon-source layer, a filler layer, an impermeable membrane and a supporting layer are sequentially arranged in the denitrification layer from top to bottom. The method and denitrification infiltration system disclosed by the invention are suitable for treating the sewage with a low carbon-nitrogen ratio of urban secondary sewage treatment plant yielding water and the like, and the system is simple in equipment and convenient in operation management and does not cause secondary pollution. Moreover, the addition is wide in source and low in price, the carbon source is slowly released and can be easily controlled, the removal of nitrate nitrogen and total nitrogen is improved by enhancing the treatment of a denitrification stage, and the processing capacity of the whole process is improved.

Description

technical field [0001] The invention relates to the technical field of environmental engineering water treatment, in particular to a method for treating sewage with a low carbon-to-nitrogen ratio and a denitrification and percolation system. Background technique [0002] The TN concentration in the effluent of the urban secondary sewage plant is required to be lower than the first-level A standard of the "Pollutant Discharge Standard for Urban Sewage Treatment Plants" (GB18918-2002), that is, the TN concentration in the effluent is less than 15mg / L. With the rapid development of the economy, nitrogen and organic matter are constantly leaking in, causing the water bodies of lakes and reservoirs to deteriorate day by day, and the problem of eutrophication of water bodies is quite serious. Nitrogen pollution control has been paid more and more attention, and has become an important task of water pollution control at present and in the future. The characteristic of the effluent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28
Inventor 李旭宁刘欢黄鑫吴属连王波梅峰
Owner SHENZHEN HONGKONG INSTITUTION OF IND EDUCATION & RES ENVIRONMENTAL ENG TECH CO LTD
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