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Device and method for stepwise reflux of sludge to strengthen anaerobic ammonium oxidation denitrification process

A technology of anaerobic ammonium oxidation and sludge, which is applied in the field of sewage treatment by biotechnology, can solve the problems of nitrate accumulation in the effluent of sewage treatment, which is difficult to further improve, and achieve the removal rate of total nitrogen and simple and easy operation control The effect of reducing the energy consumption of running and running

Active Publication Date: 2020-02-21
BEIJING DRAINAGE GRP CO LTD
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Problems solved by technology

[0006] Therefore, how to solve the problem that the total nitrogen removal rate of sewage treatment is difficult to further improve due to the accumulation of nitrate in the effluent has become an urgent problem to be solved by those skilled in the art.

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  • Device and method for stepwise reflux of sludge to strengthen anaerobic ammonium oxidation denitrification process

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Embodiment Construction

[0028]The present invention will be further described below in conjunction with drawings and embodiments.

[0029] In the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "top", "bottom" etc. are based on the orientation or positional relationship shown in the drawings, It is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0030] Such as figure 1 As shown, the device for strengthening the anaerobic ammonium oxidation denitrification process by segmental reflux of sludge is composed of a raw water tank 1, an inlet pump 2, a biochemical reactor, a sedimentation tank 6, and a PLC controller 17. The biochemical reactor inc...

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Abstract

The invention discloses a device for strengthening anaerobic ammonia oxidation and nitrogen removal process. The device comprises a raw-water storage tank, a feed pump, a biochemical reactor and a continuous flow reactor of a sediment tank; the continuous flow reactor is connected with a PLC (programmable logic controller); the biochemical reactor contains an anaerobic zone, an aerobic zone and an anoxic zone; the urban raw-material storage tank is communicated with a water inlet pipe of the biochemical reactor through the feed pump, and sewage is sequentially connected with the anaerobic zone, the aerobic zone, the anoxic zone and the sediment tank through the water inlet pipe; the sediment tank is subjected to sludge and water separation, and a supernatant is discharged as yielding water; in the anaerobic zone, activated sludge absorbs an organic matter synthesized internal carbon source degraded into the water; in the aerobic zone, coupling of short-cut nitrogen removal and anaerobic ammonium oxidation is realized by controlling dissolved oxygen, and nitrogen removal rate of the system is increased.

Description

technical field [0001] The invention relates to the field of sewage treatment by biotechnology, and more specifically relates to a device and method for stepwise sludge reflux to strengthen anaerobic ammonium oxidation denitrification process. Background technique [0002] The removal of nitrogen pollutants is a key issue in the treatment of urban sewage and industrial wastewater. The content of organic matter in urban sewage and industrial wastewater in my country is low, and the traditional nitrification and denitrification denitrification process is used, and the discharge of total nitrogen in the effluent is difficult to meet the discharge standard. In recent years, in order to alleviate the increasingly serious water eutrophication in my country, the total nitrogen discharge standards of urban sewage and industrial wastewater treatment plants have become more stringent. Therefore, the disadvantages of low treatment efficiency and high aeration energy consumption of trad...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F101/16
CPCC02F3/301C02F3/307C02F2101/16C02F2209/22C02F2301/04
Inventor 韩晓宇张树军黄京张亮程军杨岸明
Owner BEIJING DRAINAGE GRP CO LTD
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