MBBR coupled ammoxidation integrated purification tank

Abstract

The invention discloses an MBBR coupled ammonia oxidation integrated purification tank, which comprises a horizontal shell, wherein a water inlet and a water outlet are respectively formed in the horizontal shell, at least two main partition plates arranged on the horizontal shell divide the horizontal shell into at least three cabins, an overflow port / water passing port is formed in the main partition plate to communicate the cabins, at least one cabin is an anaerobic biological filter bed area, at least one cabin is an MBBR area, at least one cabin is an anaerobic biological membrane area, the anaerobic biological filter bed area is provided with a water inlet, the anaerobic biological membrane area is provided with a water outlet, the anaerobic biological filter bed area is internally provided with a suspended filler and / or a soft filler, the MBBR area is internally provided with an aeration device, an MBBR filler and / or an MBR biological membrane device and a mixed liquid reflux device connected with the anaerobic biological filter bed area, and the anaerobic biological filter bed area is filled with at least one biological filler to realize nitrification and denitrification reaction, short-cut nitrification coupled anaerobic ammonia oxidation reaction and short-cut denitrification coupled anaerobic ammonia oxidation reaction.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to the field of rural sewage treatment. Background technique [0002] Combination of short-cut nitrification and anammox [0003] ① Two-stage [0004] Two-stage features: less mutual interference, easy to achieve short-range. If the operation is stable, studies have shown that the denitrification load can reach 11kg / (m3•d). [0005] 1) Semi-short-range nitrification + anaerobic ammonium oxidation: that is, the water out of a reactor makes the ratio of ammonia nitrogen to nitrite 1:1.32, and then enters the anaerobic ammonium oxidation reactor for reaction. [0006] 2) Short-range nitrification + raw water + anaerobic ammonia oxidation [0007] ② Integration of short-range nitrification and anammox (short-range nitrification coupled with anammox): [0008] That is, in the same reactor, AOB oxidizes part of the ammonia nitrogen into nitrite nitrogen, and the remaining part of the ...

AI Technical Summary

Problems solved by technology

[0019] The rural sewage treatment technology under the existing technology mostly adopts the activated sludge method. Under the condition of sufficient oxygen, the microbial strain absorbs the organic matter in the sewage, and oxidizes and decomposes it to form carbon dioxide and water. The sludge itself can multiply and grow, and the sewage can also be purified and treated. However, due to the unstable inflow and outflow of rural sewage, the total nitrogen, ammonia nitrogen, and SS in the influent water are too high, and the activated sludge cannot effectively grow, or even does not grow, resulting in ammonia nitrogen, total Nitrogen removal is poor

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