Biological denitrification coupled N2O recovery integrated reactor and method thereof

Abstract

The invention discloses a biological denitrification coupled N2O recovery integrated reactor and a method thereof. The reactor comprises a water distribution area, a reaction area and a three-phase separation area, wherein the water distribution area is provided with a water inlet water distributor and a bottom mud pipe; the reaction area is composed of three modules, wherein a first module is ananaerobic digestion methane production area,a three-phase separation section and an air inlet pipe are arranged on the upper part of the first module, an aeration head is arranged on the upper end ofthe air inlet pipe; a second module is a shortcut nitrification area; a third module is a shortcut denitrification N2O production area; biological membrane-hanging combined fillers are arranged in thesecond module and the third module, the second module and the third module are connected on the first module in series; the three-phase separation area is sequentially provided with an outer barrel,a middle barrel and an inner barrel from outside to inside; a water outlet and an overflow weir are arranged at the outer side of anouter barrel section; a spiral guide vane is arranged at a middle barrel section; the three-phase separation area enablesmuds to fall down and enables waterto flow upwards to achieve the purpose of mud-water separation; an air collecting port is arranged on the upperpart of an inner barrel section and a water outlet pipe is arranged on the side of the inner barrel section. The reactor organically combines shortcut nitrification and denitrification with energy gastrapping, converts byproducts in the reaction process into energy for utilization, and a three-phase separator can realize effective separation of gasphase, liquid phaseand solid phase.

Description

technical field [0001] The invention relates to a biological denitrification reactor, in particular to a biological denitrification coupling N 2 O recovery integrated reactor and method thereof. Background technique [0002] At present, the eutrophication of water bodies caused by nitrogen pollution is very serious. Lake "water blooms" and offshore "red tides" occur from time to time and become more and more severe. Food safety poses a huge threat. In order to control nitrogen pollution, humans use engineering methods to strengthen nitrification and denitrification in the nitrogen cycle. In the 20th century, people built a technical system for biological denitrification based on nitrification and denitrification. In the past ten years, a number of new biological denitrification technologies marked by short-cut nitrification and denitrification technology have come out, which has greatly enriched the content of biological denitrification technology. [0003] The short-cut...

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Problems solved by technology

However, in the process of traditional denitrification reaction, the by-product N 2 o

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