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Device and method for treating low-carbon nitrogen sewage in synchronous anaerobic ammonia oxidation and anaerobic methane oxidation mode

A technology of anaerobic ammonium oxidation and anaerobic methane, applied in the field of anaerobic sewage biological denitrification, simultaneous anaerobic ammonium oxidation and anaerobic methane oxidation treatment of low-carbon nitrogen sewage, can solve the problem that cannot meet the requirements of nitrogen and phosphorus removal demand and other issues

Inactive Publication Date: 2013-08-14
南通立源水业科技发展有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Both the denitrification and phosphorus removal processes of urban sewage biological treatment require organic matter as a carbon source, generally requiring BOD / TKN>4, but the C / N ratio of urban sewage in my country is generally low, which cannot meet the needs of nitrogen and phosphorus removal

Method used

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  • Device and method for treating low-carbon nitrogen sewage in synchronous anaerobic ammonia oxidation and anaerobic methane oxidation mode
  • Device and method for treating low-carbon nitrogen sewage in synchronous anaerobic ammonia oxidation and anaerobic methane oxidation mode

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Embodiment 1

[0048] see figure 1 As shown, a device for synchronous anaerobic ammonium oxidation and anaerobic methane oxidation treatment of low carbon nitrogen ratio sewage is characterized in that it is equipped with sewage anaerobic methanogenic reactor 1, sludge anaerobic digestion tank 2, synchronous anaerobic Ammonia oxidation and anaerobic methane oxidation reactor 3, short-path nitrification reactor 4, water inlet pool 5, water outlet pool 6;

[0049] The sewage anaerobic methanogenesis reactor 1 is a cylindrical biochemical reactor, the water inlet pump 1.1 extracts the raw sewage from the water inlet pool 5, and the sewage enters the sewage anaerobic methanogenesis reactor 1 after passing through the swirl water distributor 1.2 provided at the bottom, The upper part is provided with a gas-liquid-solid three-phase separator 1.3, the gas-liquid-solid three-phase separator gas collection chamber 1.4 enters the gas collection bottle 1.5 through the exhaust pipe, and the upper part ...

Embodiment 2

[0054] Using the above-mentioned device to carry out synchronous anaerobic ammonium oxidation and anaerobic methane oxidation treatment method of low carbon nitrogen ratio sewage, influent COD, ammonia nitrogen, total nitrogen (COD=160~280mg / L, NH 4 + -N=45~75mg / L, TN=50~85mg / L), the test system such as figure 1 As shown, it consists of sewage anaerobic methanogenesis reactor, sludge anaerobic digestion tank, synchronous anammox and anaerobic methane oxidation reactor, short-path nitrification reactor, water inlet tank and outlet tank.

[0055] The specific operation steps are as follows:

[0056] 1) Inoculate the anaerobic digestion sludge obtained from the sludge digestion tank of the urban sewage plant into the sewage anaerobic methanogenesis reactor and the sludge anaerobic digestion tank respectively, and the sludge concentration MLSS after adding is 5000mg / L and 12000mg / L; Inoculate the sludge of the symbiotic flora of anaerobic ammonium oxidation (Anammox) and denitr...

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Abstract

The invention discloses a device and a method for treating low-carbon nitrogen sewage in a synchronous anaerobic ammonia oxidation and anaerobic methane oxidation mode, belonging to the technical field of sewage treatment. The device mainly comprises a sewage anaerobic methanogenesis reactor, a sludge anaerobic digestion tank, a synchronous anaerobic ammonia oxidation and anaerobic methane oxidation reactor, a partial nitrification reactor, a water intake pool and a water outtake pool, wherein anaerobic digestion sludge is respectively inoculated to the sewage anaerobic methanogenesis reactor and the sludge anaerobic digestion tank; and cultured and domesticated anaerobic ammonia oxidation and denitrification type methane anaerobic oxidized bacterium symbiotic bacteria flora sludge is inoculated to the synchronous anaerobic ammonia oxidation and anaerobic methane oxidation reactor, and cultured and domesticated partial nitrification sludge is inoculated to the partial nitrification reactor, so as to carry out sewage treatment. By utilizing the device and the method, the problems that the organic carbon source is insufficient and the ratio of C to N is low in sewage denitrification treatment are solved.

Description

technical field [0001] The invention relates to a method for biological denitrification of anaerobic sewage, in particular to a device and method for synchronous anaerobic ammonium oxidation and anaerobic methane oxidation treatment of low-carbon nitrogen sewage, belonging to the technical field of sewage treatment. Background technique [0002] Traditional wastewater biological denitrification processes are mostly based on aerobic nitrification and heterotrophic denitrification (typical representatives such as A / O process). Aerobic nitrification requires sufficient aeration to maintain the metabolism of aerobic ammonia oxidizing bacteria (AOB, Ammonia oxidation bacteria) and nitrosative oxidation bacteria (NOB, Nitrite oxidation bacteria) to achieve ammonia nitrogen (NH 4 + ) to nitrous nitrogen (NO 2 - ) and nitrate nitrogen (NO 3 - ) conversion; when dealing with urban sewage with relatively low C / N, it is necessary to provide sufficient external carbon source to mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 彭永臻郭建华王淑莹
Owner 南通立源水业科技发展有限公司
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