AOAO mud chemical wastewater treatment method

Abstract

The invention relates to an AOAO mud chemical wastewater treatment method, and belongs to the field of industrial sewage treatment. The method comprises two completely identical parallel groups of biochemical treatment tanks, wherein each group of biochemical treatment tank comprises a water distribution trench, a pre-anoxic area, an MBBR mud aerobic area, a post-anoxic area, an active sludge aerobic area and a water outlet trench which are communicated with one another; the water distribution trench is communicated with the pre-anoxic area through a cross-section overflow hole at the top of apartition wall; the pre-anoxic area is divided into two serially connected cells which are communicated through a square water through hole in the middle of the partition wall between the two cells;a suspension carrier is added into the pre-anoxic area; the water outlet place in the MBBR mud aerobic area is communicated with the post-anoxic area through a rectangular water through hole in the upper end side of the partition wall; and the water outlet place of the latter cell of the post-anoxic area is communicated with the active sludge aerobic area through a rectangular water through hole in the partition wall. The method provided by the invention overcomes the defects of COD decomposition difficulty, high ammonia and nitrogen and high TN in traditional technology, and can be applied tochemical wastewater treatment.

Description

Technical field [0001] The invention relates to an AOAO mud membrane chemical wastewater treatment method, which belongs to the field of chemical wastewater treatment. Background technique [0002] The treatment of organic wastewater, especially high-salt and high-concentration organic wastewater, has always been a problem that many domestic environmental protection workers and management departments pay attention to. With the rapid development of my country’s chemical industry, various new chemical products have been applied to all walks of life, especially in heavy pollution industries such as medicine, chemical industry, electroplating, printing and dyeing, etc., while improving the quality and quality of products, they also bring increasingly serious problems. Environmental pollution problems. After some chemical wastewater with high ammonia nitrogen and high total nitrogen is biochemically pretreated, the carbon to nitrogen ratio in the effluent is low while the ammonia nitr...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of existing traditional activated sludge technologies such as AAO and MBBR biofilm technology, and overcome the existing traditional activated sludge technologies such as AAO and MBBR biofilm technology in the treatment of refractory COD, high ammonia nitrogen and high The defect of TN’s insufficient effect on chemical wastewater provides an AOAO mud film chemical wastewater treatment method, which not only upgrades some existing chemical wastewater or expands the treatment scale, but also can be applied to treat refractory COD, high ammonia nitrogen and high New Construction of Chemical Wastewater Treatment Facility in TN

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