Wastewater denitrification nitrogen removal treatment device and method

Abstract

The invention discloses a wastewater denitrification nitrogen removal treatment device and method. The wastewater denitrification nitrogen removal treatment device mainly comprises an oxygen-poor expansion bed, a feeding pump, a circulating pump, a feeding tank, an air floatation tank, a heating pump, a heater and a control data cabinet. The oxygen-poor expansion bed is operated at an expansion state through regulating and controlling the flow of circulating water, cutting-off of the water is avoided, and removing loads of organic matters and nitrate are improved. The oxygen-poor expansion bed has the advantages of large height-diameter ratio, small occupied area, high sewage treatment efficiency, high impact resistance, short retention time, simplicity and convenience for operation, high economic benefits and wide application prospects.

Description

technical field [0001] The invention belongs to the technical fields of chemical industry and environmental protection, and in particular relates to an anoxic expanded bed device and method for wastewater treatment. Background technique [0002] In recent years, nitrogen pollution in the field of water treatment has become one of the social hot spots. With the increasingly serious problem of eutrophication in China's water bodies and the improvement of sewage discharge standards, the removal of nitrogen in water has become one of the key issues in the field of water treatment. How to remove nitrate nitrogen from water economically, efficiently and safely, and develop an efficient and stable sewage enhanced denitrification technology has become an urgent technical problem in the field of sewage treatment. [0003] Today's sewage treatment is faced with high standard discharge requirements. For example, the effluent standard of the United States, Canada and other countries is...

AI Technical Summary

Problems solved by technology

However, only suspended fillers are used for denitrification, and the effluent contains higher concentrations of particulate matter and suspended matter, resulting in higher turbidity

In the traditional sand filter denitrification denitrification process, due to the high density of sand and stone and other fillers, the relative filling rate is low, and the effective utilization rate of the reactor is correspondingly reduced. At the same time, it is easy to cause blockage during the process operation, which is not conducive to process operation.

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