Device and method for treating ammonium nitrate wastewater by biological method

A technology of ammonium nitrate and biological method, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of high cost and fast loss, and achieve simple control and simple operation Convenience and cost-saving effects

Active Publication Date: 2015-05-27
BEIJING UNIV OF TECH
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Problems solved by technology

The reverse osmosis membrane of reverse osmosis technology needs to be worn out quickly and the cost is relatively high when the water quality is unstable.

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  • Device and method for treating ammonium nitrate wastewater by biological method

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Embodiment Construction

[0039] The present invention will be further described in conjunction with accompanying drawing and example: as Figure 1 As shown, the present invention includes an anaerobic fermentation reactor SBR1, a mixing tank 2, an upflow anaerobic sludge bed reactor 3 and a drainage tank 4 connected in sequence. Among them, the effective volume of the anaerobic fermentation reactor SBR is 5L, which is a cylindrical plexiglass column; the effective volume of the mixing tank 2 is 50L, made of plexiglass; the effective volume of the upflow anaerobic sludge bed reactor UAFB3 is 3.2L , wherein the reaction zone is 2.28L, the precipitation zone is 0.92L, and the reactor is made of plexiglass.

[0040] The sludge inlet pump (1.1) is connected to the anaerobic fermentation reactor SBR (1), and the anaerobic fermentation reactor (1) is connected to the centrifuge (1.7) through the first sludge discharge valve (1.6), and the obtained supernatant enters the mixing tank In (2), the remaining slu...

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Abstract

The invention discloses a device and a method for treating ammonium nitrate wastewater by a biological method and belongs to the technical field of biological-process wastewater treatment. The device is provided with an anaerobic fermentation reactor SBR, a mixing tank, an upward-flowing anaerobic sludge bed reactor UAFB and a draining tank. By pH/ORP sensors installed in the mixing tank and the upward-flowing anaerobic sludge bed reactor UAFB, the addition amount of diluted nitric acid and fermentation solution and the processing load are optimized and controlled. According to the device and the method disclosed by the invention, a sequencing batch reactor and the upward-flowing anaerobic sludge bed reactor are creatively combined and used for treating industrial ammonium nitrate wastewater; sludge fermentation and denitrification are connected in series and coupled with anaerobic ammonia oxidation, so that sludge amount reduction and deep denitrification of the ammonium nitrate wastewater are both realized.

Description

technical field [0001] The invention relates to a device and a method for advanced treatment of industrial ammonium nitrate wastewater, and belongs to the technical field of biochemical wastewater treatment. Through the joint action of hydrolytic acidification bacteria, denitrification bacteria and anammox bacteria, the advanced treatment of industrial ammonium nitrate wastewater and the reduction of sludge are realized. Specifically, sludge fermentation produces a large amount of carbon sources, and denitrifying bacteria use these carbon sources to convert NO 3 - Revert to NO 2 - , then NO 2 - with NH 4 + Removal by anammox reaction. Background technique [0002] Nowadays, the production of ammonium nitrate fertilizer and explosives will produce a large amount of ammonium nitrate wastewater. If it is discharged into the natural environment without treatment, the ammonia nitrogen content in the discharged water will seriously exceed the standard, resulting in eutroph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 王淑莹鲍方博吴程程杜睿操沈彬彭永臻
Owner BEIJING UNIV OF TECH
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