Anaerobic ammonia oxidation denitrification system and method for low-carbon-source sewage
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An anammox and sewage technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of low efficiency of anammox reaction
Inactive Publication Date: 2020-07-14
SHANGHAI INST FOR DESIGN & RES ON ENVIRONMENTAL ENG
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[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a low-carbon source sewage anaerobic ammonium oxidation denitrification system and method, and solve the problem of low efficiency of the current anaerobic ammonium oxidation reaction
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Embodiment 1
[0034] Such as figure 1 As shown, a low-carbon source sewage anaerobic ammonium oxidation denitrification system includes a regulating tank 1, which is suitable for adjusting the pH value, dissolved oxygen and temperature of sewage; Anaerobic ammonium oxidation treatment for sewage; and aerobic pool 3 connected with anaerobic ammonium oxidation pool 2, suitable for aerobic treatment of sewage.
[0035] The regulating pool 1 is provided with a sewage inlet for passing in sewage, and the aerobic pool 3 is provided with a water outlet.
[0036] Specifically, in this embodiment, a heating coil 41 and an agitator 42 are respectively set in the regulating tank 1 and the anammox tank 2 . The heating coil 41 circulates hot water to control the temperature of the sewage in the regulating tank 1 and the anammox tank 2 respectively, and the mixer 42 is used to stir the sewage to make the sewage react better.
[0037] Specifically, in this embodiment, an aerator 71 is provided in the ae...
Embodiment 2
[0049] A method for denitrification by anaerobic ammonium oxidation of low-carbon source sewage, using the anaerobic ammonium oxidation denitrification system for low-carbon source sewage of Embodiment 1, comprising the following steps:
[0050] In step a, the sewage is passed into the regulating tank 1, and the temperature, pH and dissolved oxygen parameters of the sewage are adjusted, so that the sewage meets the requirements of the anammox process;
[0051] Specifically, when the outside temperature is low, the heating coil 41 is heated by circulating hot water; the dosing device 5 adds acid and alkali to maintain the pH stability of the sewage.
[0052] The mixer 42 stirs to fully mix the sewage;
[0053] In step b, the sewage adjusted in step a is passed into the anammox tank 2, and the sewage reacts in the anammox tank 2 to generate nitrogen to degrade ammonia nitrogen and nitrous nitrogen in the sewage;
[0054] The nitrogen gas produced by the reaction is discharged f...
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Abstract
The invention relates to an anaerobic ammonia oxidation denitrification system for low-carbon-source sewage. The anaerobic ammonia oxidation denitrification system comprises an adjusting tank, an anaerobic ammonia oxidation tank and an aerobic tank. An anaerobic ammonia oxidation denitrification method for the low-carbon-source sewage adopts the anaerobic ammonia oxidation denitrification system for the low-carbon-source sewage and comprises the following steps: a, introducing sewage into the adjusting tank, and adjusting the temperature, pH and dissolved oxygen parameters of the sewage so asto enable the sewage to meet the requirements of an anaerobic ammonia oxidation process; b, introducing the sewage adjusted in the step a into an anaerobic ammonia oxidation tank, and enabling the sewage to react in the anaerobic ammonia oxidation tank so as to degrade ammonia nitrogen and nitrite nitrogen in the sewage; and c, introducing the sewage obtained by reaction in the step b into an aerobic tank, aerating by an aerator to provide an aerobic environment, oxidizing residual ammonia nitrogen in the sewage into nitrite nitrogen, performing aerobic treatment on the sewage, and dischargingthe sewage. Efficient treatment of the low-carbon-source sewage can be realized without adding advanced treatment, the investment cost is low, the operation cost is low, and the occupied area is small.
Description
technical field [0001] The invention relates to the field of environmental protection, in particular to a low-carbon source sewage anaerobic ammonium oxidation denitrification system and method. Background technique [0002] With the improvement of people's living standards, the composition of sewage is also gradually changing. According to statistics, 65% of sewage treatment plants have insufficient carbon sources. The traditional denitrification process cannot meet the removal of total nitrogen by denitrifying bacteria. If advanced treatment is added, it will inevitably increase investment, operating costs, and floor area. The treatment of nitrogen-containing wastewater from low-carbon sources is currently a difficult problem. [0003] Anaerobic ammonium oxidation is a new nitrogen removal technology in sewage treatment. Under anaerobic conditions, anammox bacteria oxidize ammonia nitrogen to nitrogen gas using nitrite as an electron acceptor. This process does not requi...
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