Semi-nitrification-denitrification anaerobic ammonia oxidation device and method for treating low carbon-nitrogen ratio urban sewage
A technology of nitrifying anaerobic ammonium and low carbon-to-nitrogen ratio, which is applied to the device and field of semi-nitrification-denitrification anammox treatment of low carbon-to-nitrogen ratio urban sewage, which can solve the complex control factors of nitrite accumulation and excessive nitric acid Salt, affecting the denitrification effect and other issues, to achieve the effect of easy operation, saving aeration volume and aeration time, and improving denitrification efficiency
Active Publication Date: 2016-01-13
贵州筑信水务环境产业有限公司
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Problems solved by technology
The main reason is that the control factors affecting the accumulation of nitrite are relatively complex, and nitrifying bacteria (NOB) can quickly convert nitrite into nitrate, which will cause the short-cut nitrification denitrification process that has been realized to return to the full-scale nitrification process. Lead to excessive nitrate in the effluent, affecting the denitrification effect
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[0022] Below in conjunction with accompanying drawing and specific examples the present invention will be further described:
[0023] Such as figure 1 As shown, the semi-nitrification-denitrification anaerobic ammonium oxidation process for treating low-carbon-nitrogen ratio urban domestic sewage is characterized in that it includes a raw water tank 1, a semi-nitrification reactor 2, an intermediate water tank 3, and denitrification anammox reaction Device 4, additional carbon source storage box 5.
[0024] The raw water tank 1 is connected to the semi-nitration reactor 2 through the first peristaltic pump 2.1; the semi-nitration reactor is provided with a first stirring device 2.2 and a water outlet 2.3, and the bottom of the reactor is provided with an aeration head 2.4, and an air pump 2.5 passes through a gas flow meter 2.6 is connected to the aeration head; the semi-nitrification reactor is connected to the intermediate water tank 3; the intermediate water tank is connec...
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The invention relates to a device and a method for treating the municipal sewage with low carbon nitrogen ratio by half nitrification-denitrification anaerobic ammonia oxidation, belonging to the technical field of biological sewage treatment. The device comprises a raw water tank, a half nitrification reactor, an intermediate water tank, a denitrification anaerobic ammonia oxidation reactor and an external carbon source device. The method comprises the following steps: firstly, enabling the municipal sewage to enter the half nitrification reactor to enable part of ammonia nitrogen to be converted into nitrate; and enabling the water discharged by the half nitrification reactor to enter the denitrification anaerobic ammonia oxidation reactor, reducing the nitrate into nitrite with denitrifying bacteria through organic matters, and synchronously removing the ammonia nitrogen in the raw material by anaerobic ammonia oxidation. The nitrite is accumulated by denitrification, so that the problem that in the partial nitrification process of the municipal sewage with low carbon nitrogen ratio, the nitrite can not be easily and stably accumulated can be solved, the nitrogen removal efficiency of the anaerobic ammonia oxidation technology is increased, the operation cost is lowered, and the control operation is simplified; and therefore, an effective and feasible way is provided for denitrification of the municipal sewage with low carbon nitrogen ratio.
Description
technical field [0001] The invention relates to a low-energy-consumption device and method for treating urban sewage with a low carbon-to-nitrogen ratio, which belongs to the technical field of sewage biological treatment, and specifically enters urban domestic sewage into a semi-nitrification reactor, and converts part of ammonia nitrogen in raw water through aerobic aeration nitrate, the effluent enters the denitrification anammox reactor, and the denitrification bacteria use an external organic carbon source to reduce nitrate to nitrite, provide electron acceptors for the anammox bacteria, and the accumulated nitrite is regenerated The ammonia nitrogen that has not been oxidized in the raw water is generated through anaerobic ammonium oxidation to remove nitrogen, and the denitrification of urban domestic sewage with high efficiency and low energy consumption is stably realized. Background technique [0002] With the development of cities and the improvement of people's l...
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IPC IPC(8): C02F3/30C02F101/16
CPCC02F3/302C02F3/305C02F3/307C02F2101/16C02F2101/163
Inventor 彭永臻杜睿操沈彬王淑莹
Owner 贵州筑信水务环境产业有限公司