Sewage denitrification deep denitrification treatment equipment and treatment method

Abstract

The invention discloses deep sewage denitrification treatment equipment comprising a water inflow system, a carbon source adding system, a denitrification reactor and a clean water pool, wherein the denitrification reactor at least comprises a premixing layer, a suspension packing layer, a sand filtering layer and a clear water layer in sequence from bottom to top or from top to bottom, the water inflow system and the carbon source adding system both are communicated with the premixing layer, and the clear water layer is communicated with the clear water pool. The invention further discloses a corresponding deep sewage denitrification treatment method. The deep sewage denitrification treatment equipment and deep sewage denitrification method disclosed by the invention not only have high denitrification efficiency and good effect, but also can be used for significantly reducing the turbidity of effluent.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a sewage denitrification deep denitrification treatment equipment and treatment method. Background technique [0002] Nitrogen and phosphorus in discharged sewage are important nutrients that cause eutrophication of water bodies. With the increasingly serious problem of eutrophication in China's water bodies and the improvement of future sewage discharge standards, the development of economical, efficient and stable sewage enhanced nitrogen and phosphorus removal technologies has become an urgent technical demand in the field of sewage treatment. [0003] Today's sewage treatment is faced with high standard discharge requirements, such as the United States, Canada and other countries, the effluent standard TN is less than 3mg / L and TP is less than 0.18mg / L. Nitrogen in sewage is mainly removed through the process of nitrification and denitrification, in which denitrification requ...

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 other fillers, the relative filling rate is low, and the effective utilization rate of the reactor is also reduced accordingly; at the same time, it is easy to cause blockage during process operation, which is not conducive to process operation

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