Biological carbon and nitrogen removal integrated reactor for treating organic nitrogen wastewater

Abstract

The invention discloses a biological carbon and nitrogen removal integrated reactor for treating organic nitrogen wastewater. The biological carbon and nitrogen removal integrated reactor comprises an anaerobic zone, an aerobic zone and an anoxic zone, wherein a water inlet pipe is arranged on one side of the anaerobic zone, a first airlift backflow system is arranged in the anaerobic zone, the aerobic zone is provided with an aeration device, the upper portion of the aeration device is filled with a biological suspended filler, the upper portion of the biological suspended filler is provided with a second airlift backflow system, a precipitation zone is arranged at the top of the anoxic zone, a water outlet pipe is arranged at the upper portion of the precipitation zone, and one-way water passing galleries for one-way circulation are arranged between the anaerobic zone and the aerobic zone , and between the aerobic zone and the anoxic zone. According to the invention, anaerobic digestion, denitrification, nitrosation and anaerobic ammonia oxidation can be partitioned in a single reactor, so that the integration of anaerobic digestion, denitrification, partial nitrosation and anaerobic ammonia oxidation reaction devices is realized, and the growth environments of the three can be ensured not to influence each other only by simple control.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an integrated reactor for biological carbon and nitrogen removal for treating organic nitrogen wastewater. Background technique [0002] The treatment of organic nitrogen wastewater has always been a difficult point in the wastewater treatment process. Conventional biological treatment processes generally use anaerobic or aerobic units to oxidize organic matter to promote the release of ammonia nitrogen, and then use nitrification and denitrification processes for denitrification. During the operation of this combined process, the removal of ammonia nitrogen is the key point of the energy and material consumption of the whole process, which is mainly reflected in the need to provide a large amount of aeration during the nitrification process; the denitrification process relies on the addition of additional organic matter. [0003] Partial nitrification-anammox, as a...

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Problems solved by technology

[0004] However, in the partial nitritation-anammox process, there are still contradictions between the functional microorganisms mainly composed of aerobic ammonia oxidizing bacteria and anammox bacteria, such as dissolved oxygen, pH and other environmental factors. How to alleviate these contradictions It is the key to realize the efficient coupled denitrification of partial nitritation and anammox

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