Device and method for realizing deep nitrogen removal of urban domestic sewage by shortcut nitrification-anaerobic ammoxidation coupled denitrification

A technology for anaerobic ammonium oxidation coupled with urban domestic sewage, applied in anaerobic digestion treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve problems such as insufficient carbon sources, improve effluent water quality, save exposure The effect of reducing gas energy consumption and reducing treatment costs

Active Publication Date: 2019-12-13
BEIJING UNIV OF TECH
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Problems solved by technology

[0006] The present invention provides a short-range nitrification-ANAMMOX coupled denitrification device and method for realizing deep denitrification of urban domestic sewage, with the purpose of solving the problem of insufficient carbon source in the traditional sewage treatment process, and at the same time improving the quality of effluent water

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  • Device and method for realizing deep nitrogen removal of urban domestic sewage by shortcut nitrification-anaerobic ammoxidation coupled denitrification

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[0021] The scheme of the present invention will be described in detail in conjunction with the drawings and implementation examples.

[0022] Such as figure 1 As shown, the short-cut nitrification-ANAMMOX coupled denitrification device to achieve deep denitrification of urban domestic sewage, including raw water tank (1), short-cut nitrification reactor (PN-SBR) (2), intermediate water tank (3), upstream Anaerobic ammonium oxidation coupled denitrification granular sludge reactor (SAD-UASB) (4); raw water tank (1) is equipped with water inlet pump Ⅰ (1.1), water inlet pump Ⅱ (1.2); short-cut nitrification reactor (2) Equipped with stirring device (2.1), pH / DO measuring instrument (2.2), aeration device (2.3), gas flow meter (2.4), air pump (2.5), drain valve (2.6), mud discharge valve (2.7); The intermediate water tank (3) is equipped with an inlet pump III (3.1); the upflow anammox coupled denitrification granular sludge reactor (4) is equipped with a pH / DO measuring instrum...

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Abstract

A device and a method for realizing deep nitrogen removal of urban domestic sewage by shortcut nitrification-anaerobic ammoxidation coupled denitrification belong to the field of biological sewage treatment. The device comprises a raw water tank, a shortcut nitrification reactor, an adjusting water tank, an anaerobic ammoxidation coupled denitrification reactor and an effluent water tank. A part of domestic sewage enters the shortcut nitrification reactor, and undergoes an ammoxidation reaction, and then effluent water rich in NO2-N enters an intermediate water tank; the remaining domestic sewage is mixed with the effluent water of the shortcut nitrification reactor, and then enters the anaerobic ammoxidation coupled denitrification reactor, and NH<4+>-N in the domestic sewage and the NO2-N generated by the shortcut nitrification are removed through anaerobic ammoxidation; and organic matters in the domestic sewage are utilized by denitrifying bacteria to remove NO3-N generated by theanaerobic ammoxidation reaction. The device and the method improve the denitrification efficiency by fully utilizing the organic matters in the domestic sewage so efficient and energy-saving deep nitrogen removal of the urban sewage is realized.

Description

technical field [0001] The short-range nitrification-ANAMMOX coupled denitrification device and method for deep denitrification of urban domestic sewage involved in the present invention belong to the field of sewage biological treatment and are suitable for deep denitrification of urban domestic sewage with low C / N ratio. Background technique [0002] A large amount of urban sewage, industrial wastewater, and agricultural wastewater discharged by human activities have caused nitrogen and phosphorus pollution in water bodies. Among them, the nitrogen in urban sewage mainly exists in the form of organic nitrogen and ammonia nitrogen, which not only poses a great threat to human health, but also causes eutrophication of water bodies, damages the ecological environment, and causes water shortages. However, the traditional nitrification and denitrification sewage biological treatment technology has the problems of insufficient carbon source, high energy consumption and low nitro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/28
CPCC02F3/28C02F2101/16C02F2209/06C02F2209/08C02F2209/14C02F2209/15
Inventor 彭永臻邓诗云张琼
Owner BEIJING UNIV OF TECH
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