Integrated semi-nitrification-anaerobic ammonia oxidation reactor denitrification sewage treatment method

Abstract

The invention relates to a sewage treatment method, in particular to an integrated semi-nitrification-anaerobic ammonia oxidation reactor denitrification sewage treatment method. The integrated semi-nitrification anaerobic ammonia oxidation reactor used in the method is mainly characterized by comprising a water inlet tank, a reactor main body, a sedimentation tank and a control system, wherein the water inlet tank is connected with a water inlet in the bottom of the reactor main body through a peristaltic pump; a filler frame is arranged in the reactor main body, an aeration head is arrangedat the bottom in the reactor, the aeration amount is controlled by an aeration pump, and a pH online tester and a heating rod are arranged at the middle upper part; the reactor main body is connectedwith the alkali barrel, and alkali is provided for the reactor through a liquid supplementing pump; the reactor main body is connected with the sedimentation tank through a water outlet. When the above system is used for sewage treatment, the device needs to be started firstly, then the ammonia nitrogen water inlet load is increased, and humic acid is added in the experimental stage. By adding humic acid, the denitrification capacity is improved, and the ammonia nitrogen removal rate reaches 95%.

Description

technical field [0001] The invention relates to a method for treating sewage, in particular to an integrated semi-nitrification-anaerobic ammonium oxidation reactor denitrification method for treating sewage. Background technique [0002] With the rapid development of my country's fertilizer, food, petroleum and chemical industries, the discharge of ammonia nitrogen wastewater has increased rapidly. High-concentration ammonia nitrogen wastewater is discharged into the environmental water body, which can easily cause algae or other microorganisms to multiply in the water, resulting in eutrophication of the natural water body, resulting in an imbalance in the distribution of species in the aquatic ecosystem. The nitrate and nitrite produced by ammonia nitrogen in water can easily induce methemoglobinemia and produce "three causes" effect, which is harmful to human health. my country's current relevant environmental protection standards that involve ammonia nitrogen wastewater...

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Problems solved by technology

[0004] However, the reported integrated semi-nitrification-ANAMMOX process has the problem of poor sludge flocculation and system instability

The surface electronegativity of microbial cell EPS is large, and the repulsion between cells is large, resulting in poor flocculation performance of sludge, which is not conducive to sludge aggregation to form biofilm, and ultimately affects the stable operation of the reactor.

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