HEDN bioreactor and treatment method

Abstract

The invention discloses an HEDN bioreactor and a treatment method. The HEDN bioreactor comprises an HEDN biochemical pool and an oxygenator mounted at the top of the HEDN biochemical pool, an HEDN filler layer and a water distributor are arranged in the HEDN biochemical pool, the HEDN filler layer is located above the water distributor, a suspended sludge bed area is formed from the water distributor to the top of the HEDN filler layer, a sediment sludge deposition area is formed below the water distributor, a clear water area is formed above the HEDN filler layer, a sludge discharge pipe is arranged in the sediment sludge deposition area, and a water outlet is formed in the clear water area; a water drop rotating blade assembly is arranged in the oxygenator, a water inlet, a reflux inlet and a water outlet are formed in the oxygenator, the reflux inlet of the oxygenator is communicated to the clear water area, and the water outlet of the oxygenator is communicated with the water distributor through a reflux gallery. The bioreactor disclosed by the invention is optimized in treatment function, highly integrated in structure and high in comprehensive economy, is suitable for a contact oxidation or contact adsorption reaction process, and is particularly suitable for an anoxic denitrification process in which dissolved oxygen needs to be accurately controlled.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a HEDN (High effectdenitrification, high-efficiency denitrification) bioreactor and a treatment method. Background technique [0002] The upgrading of sewage microbial treatment technology and equipment is an important part of the energy-saving and environmental protection industry, an important technical basis for environmental protection, and an important guarantee for the realization of green development. In recent years, the industrial scale brought about by the upgrading of sewage microbial treatment technology and equipment has rapidly expanded, the development model has been continuously innovated, the service field has been continuously expanded, the technical level has been greatly improved, and some technologies have reached the international leading level. With the concept of green development deeply rooted in the hearts of the people, the pace of industrial g...

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Problems solved by technology

[0010] For the existing aerobic / facultative reactors, the space utilization rate is low, the energy consumption of oxygenation is high, the degree of oxygenation cannot be accurately controlled, the sludge concentration in the microbial reaction zone is low, and the area occupied by the mud-water separation unit (secondary sedimentation tank) The present invention provides a HEDN biological reaction with optimized treatment function, highly integrated structure, and high comprehensive economy, which is suitable for contact oxidation or contact adsorption reaction process, especially for anoxic denitrification process that requires precise control of dissolved oxygen device and processing method

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