A high-efficiency aerobic biological fluidized bed reactor

Abstract

The invention relates to a high-efficiency aerobic biological fluidized bed reactor, which is characterized in that it includes a reaction zone and an activated sludge sedimentation zone above the reaction zone, wherein: the reaction zone includes a second anoxic zone arranged sequentially from bottom to top , the aerobic zone and the first anoxic zone; one side of the lower part of the second anoxic zone is connected with the mud discharge pipe and the water inlet pipe, and the other side of the lower part is connected with the manhole; The first anoxic zone and the second anoxic zone are separated; the activated sludge sedimentation zone includes a first sedimentation chamber and a second sedimentation chamber. Compared with the traditional aerobic biological fluidized bed reactor, the present invention integrates aerobic decarburization, anoxic denitrification and sedimentation sludge, and has the advantages of compact structure, less land occupation, high volume load, good mass transfer effect and impact load resistance Strong capacity and other advantages, especially suitable for reconstruction and expansion projects of sewage treatment in small and medium-sized enterprises.

Description

technical field [0001] The invention relates to the field of organic wastewater treatment, in particular to an efficient aerobic biological fluidized bed reactor. Background technique [0002] With the continuous advancement of the industrialization process, the discharge of industrial wastewater is increasing year by year. According to the "China Environmental Statistical Yearbook", in 2015, the national industrial wastewater discharge was as high as 19.95 billion tons, of which the chemical oxygen demand (COD) discharge was as high as 2.935 million tons, and the ammonia nitrogen discharge was as high as 217,000 tons. Wastewater discharge has decreased in recent years, but the base is still very large, and there is an urgent need to develop efficient treatment equipment and technology. High-concentration organic wastewater has a high COD content, generally above 2000mg / L, sometimes even as high as tens of thousands or even hundreds of thousands, and the BOD content is low,...

AI Technical Summary

Problems solved by technology

High-concentration organic wastewater has a high COD content, generally above 2000mg / L, sometimes even as high as tens of thousands or even hundreds of thousands, and the BOD content is low, the biodegradability is poor, and it is easy to cause water hypoxia. Direct discharge will cause serious damage to natural water bodies. directly or indirectly affect people's health

General traditional sewage treatment technology, such as A 2 / O, oxidation ditch, etc., when used to treat this type of wastewater, there are disadvantages such as large footprint, low operating load and high operating cost.

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