A method for synchronous autotrophic denitrification with water quantity regulation
An autotrophic denitrification and water volume technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, biological water/sewage treatment, etc., can solve the problems of excess sludge and malodorous gas, complex heterotrophic denitrification process Low ammonia nitrogen removal rate and other problems, to achieve the effect of less excess sludge and malodorous gas, small biochemical tank volume, and high ammonia nitrogen removal rate
Active Publication Date: 2021-10-29
厦门溢盛环保科技有限公司
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Problems solved by technology
Heterotrophic denitrification is a whole process of nitrification and denitrification, so the heterotrophic denitrification process is complicated, the reaction time is long, the biochemical efficiency is low, the excess sludge and odorous gas are produced, and the removal rate of ammonia nitrogen is relatively low
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[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0033] Such as figure 1 As shown, a water-controlled anammox synchronous autotrophic denitrification system includes a pretreatment device, biosorption flocculation tank 1, intermediate sedimentation tank 2, synchronous autotrophic denitrification tank 3, and sludge anaerobic digestion tank 4 , Sludge dewatering device 5 and water sealer 6.
[0034] The output end of the pretreatment device is connected with the input end of the biosorption flocculation tank 1, the output end of the biosorption flocculation tank 1 is connected with the input end of the middle sedimentation tank 2, and the output end of the upper part of the middle sedimentation tank 2 is connected with the synchronous autotrophic desorp...
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A method for synchronous autotrophic denitrification of water volume control, belonging to the field of sewage treatment, comprising the following steps: 1) The pretreated urban sewage is treated by a pretreatment device and then enters a biological adsorption flocculation tank, where microorganisms adsorb and flocculate pollutants, and then enter the middle The settling tank is used for the separation of sedimentation mud and water; 2) The supernatant of the middle settling tank flows into the synchronous autotrophic denitrification tank, and under the action of ammonia oxidizing bacteria and anammox bacteria, a short-range nitrification and anammox process occurs, and ammonia nitrogen and nitrous Nitrogen is converted into nitrogen; 3) Part of the sludge discharged from the bottom of the middle sedimentation tank flows back to the pretreatment device, and part of it enters the sludge anaerobic digestion tank for anaerobic fermentation and digestion to generate biogas; 4) The residual sewage of the sludge anaerobic digestion tank After the mud is dehydrated by the sludge dewatering device, the sludge is transported outside, and the supernatant produced by the sludge dewatering device is sent back to the pretreatment device. The invention has the advantages of simple process, short reaction time, high biochemical efficiency, less residual sludge and malodorous gas, and higher removal rate of ammonia nitrogen.
Description
technical field [0001] The invention relates to the field of sewage treatment, in particular to a method for synchronous autotrophic denitrification with water volume control. Background technique [0002] At present, the biological denitrification treatment method of sewage is mainly based on the heterotrophic denitrification method. The so-called heterotrophic denitrification is that ammonia oxidizing bacteria (AOB) and nitrite oxidizing bacteria oxidize ammonia nitrogen in sewage to nitrate, and then denitrifying bacteria (DNF) use the organic carbon source in sewage to reduce nitrate to nitrogen . Heterotrophic denitrification is a whole process of nitrification and denitrification, so the process of heterotrophic denitrification is complicated, the reaction time is long, the biochemical efficiency is low, the excess sludge and odorous gas are produced, and the removal rate of ammonia nitrogen is relatively low. Contents of the invention [0003] The purpose of the p...
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IPC IPC(8): C02F9/14
CPCC02F1/001C02F3/302C02F3/34C02F9/00C02F2001/007
Inventor 庄昌玺周志强张蓉
Owner 厦门溢盛环保科技有限公司