Low-energy-consumption rapid biochemical sewage denitrification process

A low-energy-consumption, sewage technology, applied in the fields of oxidized water/sewage treatment, water/sewage treatment, flotation water/sewage treatment, etc., can solve the problems of high energy consumption, low denitrification efficiency, etc. The effect of small, short total hydraulic retention time and less aeration

Inactive Publication Date: 2019-12-17
SHENZHEN QINGYAN ENVIRONMENTAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of low denitrification efficiency and high energy consumption existing in the prior art, and provide a low energy consumption rapid biochemical sewage denitrification process

Method used

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  • Low-energy-consumption rapid biochemical sewage denitrification process

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Embodiment 1

[0020] like figure 1 , a low-energy rapid biochemical sewage denitrification process, including a facultative section and an aerobic section, the aerobic section adopts a reaction-sedimentation integrated rectangular air-lift circulation bioreactor, and the aerobic section adopts an aerated biological filter. After the following procedures: Step 1, the sewage enters the aerobic section, and the sewage undergoes denitrification and short-range nitrification and denitrification reactions with the aerobic microorganisms in the aerobic section. A mud-water separation device is also arranged in the aerobic section. The sludge after mud-water separation continues to stay in the aerobic section, and the separated supernatant enters the next step; process 2, the supernatant separated from the aerobic section enters the aerobic section, and the separated supernatant enters the aerobic section. The aerobic microorganisms carry out the nitrification reaction, and then part of the physica...

Embodiment 2

[0022] like figure 1 , a low-energy rapid denitrification process for biochemical sewage, including a facultative section and an aerobic section. Coagulation and precipitation. After the following procedures: Step 1, the sewage enters the aerobic section, and the sewage undergoes denitrification and short-range nitrification and denitrification reactions with the aerobic microorganisms in the aerobic section. A mud-water separation device is also arranged in the aerobic section. The sludge after mud-water separation continues to stay in the aerobic section, and the separated supernatant enters the next step; process 2, the supernatant separated from the aerobic section enters the aerobic section, and the separated supernatant enters the aerobic section. The aerobic microorganisms carry out the nitrification reaction, and then part of the physically separated clear water is used as the nitrification liquid to return to the facultative section, and the other part is used as the...

Embodiment 3

[0024] like figure 1 , a low-energy rapid biochemical sewage denitrification process, comprising a facultative section and an aerobic section, the aerobic section adopts a facultative membrane bioreactor, and the aerobic section adopts an aerated biological filter. After the following procedures: Step 1, the sewage enters the aerobic section, and the sewage undergoes denitrification and short-range nitrification and denitrification reactions with the aerobic microorganisms in the aerobic section. A mud-water separation device is also arranged in the aerobic section. The sludge after mud-water separation continues to stay in the aerobic section, and the separated supernatant enters the next step; process 2, the supernatant separated from the aerobic section enters the aerobic section, and the separated supernatant enters the aerobic section. The aerobic microorganisms carry out the nitrification reaction, and then part of the physically separated clear water is used as the nitr...

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Abstract

The invention discloses a low-energy-consumption rapid biochemical sewage denitrification process. The method comprises the steps: step 1, sewage enters an aerobic section, the sewage and aerobic microorganisms are subjected to a denitrification reaction and a short-cut nitrification and denitrification reaction in the aerobic section, a sludge-water separator is further arranged in the aerobic section, sludge obtained after sludge-water separation continues to remain in the aerobic section, and separated supernatant enters the next step; and step 2, the supernatant separated from the aerobicsection enters an aerobiotic section, nitration reaction is carried out on the supernatant and aerobiotic microorganisms in the aerobiotic section, clear water physically separated from one part of anitration liquid after the nitration reaction is used as system effluent, and the other part of the nitration liquid flows back to the aerobic section. According to the process, the sewage treatment efficiency is improved, and the energy consumption is low because the hydraulic retention time of the aerobiotic section is short.

Description

technical field [0001] The invention relates to a process for denitrification of biochemical sewage, in particular to a process for denitrification of biochemical sewage with low energy consumption and fast. Background technique [0002] Biological wastewater denitrification process includes anoxic and aerobic biological reactions, which are generally realized by setting anoxic section (pool) and aerobic section (pool). In actual operation, the anoxic section (pool) is controlled as The anoxic state is conducive to the growth of facultative microorganisms, and the aerobic state is controlled in the aerobic section (pool) to facilitate the growth of aerobic microorganisms. The dissolved ammonia nitrogen in the sewage is nitrified by nitrifying bacteria in the aerobic section (pool) to become nitrate nitrogen, and the nitrate nitrogen flows back to the anoxic section (pool) to be denitrified into nitrogen gas, thereby completing the denitrification process of sewage. In this ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/30C02F101/16
CPCC02F1/24C02F1/488C02F1/72C02F3/30C02F9/00C02F2001/007C02F2101/16
Inventor 刘淑杰陈福明
Owner SHENZHEN QINGYAN ENVIRONMENTAL TECH CO LTD
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