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Method for deep denitrification by means of denitrification ammonium oxidation moving bed biofilm reactor (MBBR) process

A technology of denitrifying ammonium oxidation and deep denitrification, which is applied in the field of domestic sewage treatment and nitrate-containing wastewater treatment, and can solve the problems of difficult realization and maintenance, long generation cycle, slow growth of anammox bacteria, etc.

Inactive Publication Date: 2019-05-17
HARBIN INST OF TECH AT WEIHAI +1
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Problems solved by technology

[0003] Ordinary domestic sewage belongs to low-temperature low-ammonia nitrogen concentration wastewater. There is a bottleneck in the conventional short-range nitrification + anammox technology. Short-range nitrification is difficult to achieve and maintain. Anammox bacteria grow slowly and have a long generation cycle.

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  • Method for deep denitrification by means of denitrification ammonium oxidation moving bed biofilm reactor (MBBR) process

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Embodiment approach

[0013] 1) Sewage first enters (3) anaerobic zone through (1) inlet pump, and at the same time, activated sludge enters (3) anaerobic zone through (14) sludge return pump, and nitrifying liquid enters through (15) nitrifying liquid return pump (4) Anoxic zone, (5) Anoxic zone, partial denitrification reaction occurs in the activated sludge system in (3) Anaerobic zone, (4) Anoxic zone, (5) Anoxic zone, etc. State nitrogen is reduced to nitrite nitrogen, and anaerobic ammonium oxidation reaction occurs on (2) MBBR filler in this area, nitrous and ammonia nitrogen react to generate nitrogen, and anaerobic phosphorus release reaction occurs simultaneously;

[0014] 2) At the end of hypoxia, the remaining mixed solution continues to flow into (6) aerobic zone, (7) aerobic zone, (8) aerobic zone, (9) aerobic zone, and the remaining ammonia nitrogen is removed by nitrification, and good Oxygen phosphorus absorption reaction, after (10) separation of sludge and water in sedimentation ...

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Abstract

The invention relates to a method for deep denitrification by means of a denitrification ammonium oxidation moving bed biofilm reactor (MBBR) process, belonging to the technical field of sewage treatment. The method comprises the steps of adding MBBR filler into an anaerobic area and an anoxic area, controlling denitrification reduction in a nitrous stage, and enabling the produced nitrite and ammonia nitrogen in the raw sewage to be subjected to an anaerobic ammonium oxidation reaction so as to realize deamination in a way of denitrification ammonium oxidation. The method applies denitrifyingbacteria and anaerobic ammonia oxidizing bacteria into sewage treatment, and a carbon source and energy can be saved by means of denitrification ammonium oxidation, so that the advanced nitrogen removal of the sewage is realized.

Description

technical field [0001] The invention relates to a method for realizing deep denitrification through the denitrification ammonium oxidation MBBR process, belongs to the technical field of sewage treatment, is suitable for domestic sewage treatment and nitrate-containing wastewater treatment, improves nitrogen removal rate, solves nitrogen and phosphorus pollution, and protects water environment . Background technique [0002] The eutrophication caused by nitrogen and phosphorus pollution in my country's water bodies is serious. [0003] Ordinary domestic sewage belongs to low-temperature low-ammonia nitrogen concentration wastewater. There is a bottleneck in the conventional short-cut nitrification + anammox technology. Short-cut nitrification is difficult to achieve and maintain. Anammox bacteria grow slowly and have a long generation cycle. [0004] Denitrification ammonium oxidation means that in a single reactor, partial denitrification reaction (NO3- NO2-) and anaerobic...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 赵伟华张瑛洁王凯程喜全
Owner HARBIN INST OF TECH AT WEIHAI
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