Multi-stage inner-circulation nitration-denitrification biological denitrogenation reactor

Abstract

The invention discloses an integral multistage internal recycle nitrating-denitrifying biological denitrifying fluid-bed reactor, which comprises the following parts for the open structured case space from downward to upward: fluid reacting zone with anoxic zone, high-density aerobic zone, low-density aerobic zone, three-phased separating zone, wherein the adjacent zones interconnect mutually; the anoxic zone, high-density aerobic zone, low-density aerobic zone of fluid reacting zone is formed by zone baffle on the cylinder body of the reacting zone; each circulating baffle is set each fluid reacting zone to make the interval flow form interval circulation filled with porous polymer macromolecular carrier when operating; three-phased separating zone is composed of separating zone cylinder, upper and lower separating cylinders in the cylinder and water outlet weir between the cylinder and separating cylinder, which discharges the purified water through water outlet weir and the degas into the atmosphere through open.

Description

Technical field: [0001] The invention relates to the technical field of high-concentration ammonia-nitrogen-containing industrial sewage treatment, and is a nitrification-denitrification biological denitrification fluidized bed reaction device, in particular to a nitrification-denitrification biological reaction using multi-stage internal circulation to treat nitrogen in sewage An integrated fluidized bed reaction device for removal. Background technique: [0002] Sewage treatment is the most important part of the three wastes treatment, nitrogen in sewage is one of the main causes of water eutrophication. All countries have formulated relevant laws and regulations, which have strictly limited the concentration of nitrogen pollutants. With the increasing eutrophication of natural water bodies, the control of nitrogen will become more and more stringent. The commonly used treatment methods for sewage denitrification include physical chemical treatment and biological treatme...

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Problems solved by technology

[0005] Aiming at the deficiencies in the nitrification-denitrification biological denitrification treatment technology of the prior art, the purpose of the present invention is to solve the existing The technical nitrification-denitrification biological denitrification treatment device has problems such as large area of ​​facilities, large project investment, high operating cost, poor operation stability, difficult control, and low treatment efficiency.

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