Device for removing nitrogen through bio-autotrophic denitrification

An autotrophic denitrification and denitrification technology, applied in the field of water purification, can solve problems such as accumulation of nitrite intermediates, and achieve the effects of avoiding secondary pollution problems, small sludge output, low treatment volume and disposal costs

Inactive Publication Date: 2011-02-02
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0007] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a bioautotrophic denitrification denitrification device, which removes nitrate nitrogen in nitrogen-polluted water without adding organic matter, and at the same time avoids possible occurrence of The problem of nitrite intermediate product accumulation

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  • Device for removing nitrogen through bio-autotrophic denitrification

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Embodiment Construction

[0023] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention is not limited to the following implementation. example.

[0024] like figure 1 As described, this embodiment includes: sodium thiosulfate drug 1, dosing pump 2, nitrogen-contaminated raw water 3, feed pump 4, up-flow anaerobic sludge bed 5, denitrified treated water 6 and nitrogen escape port 7. Among them: the sodium thiosulfate drug 1 is dissolved in the dissolving tank, the bottom of the dissolving tank is connected to the inlet pipe of the dosing pump 2, and the end of the water outlet pipe of the dosing pump 2 is connected with a tee to improve nitrogen pollution The inlet pipe of the inlet pump 4 of the raw water 3 and the outlet pipe of the inlet pump 4 are connected...

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Abstract

A device for removing nitrogen through bio-autotrophic denitrification belongs to the technical field of water purification and comprises a drug dissolving pool, a dosing pump, a nitrogen polluted water inlet pump, an upflow anaerobic sludge bed and a nitrogen escape outlet, wherein sodium thiosulfate is dissolved in the drug dissolving pool; the bottom of the drug dissolving pool is connected with the inlet pipe of the dosing pump; the outlet pipe of the dosing pump is connected with the inlet pipe of the nitrogen polluted water inlet pump; the outlet pipe of the nitrogen polluted water inlet pump is connected with the water inlet at the bottom of the upflow anaerobic sludge bed; and the nitrogen escape outlet is arranged at the top of the upflow anaerobic sludge bed to discharge gases. Without adding organic matters, the device removes the nitrate nitrogen in the nitrogen polluted water and simultaneously avoids the problem of possible accumulation of intermediate products of nitrites in the nitrate nitrogen reduction process.

Description

technical field [0001] The invention relates to a method in the technical field of water purification, in particular to a bioautotrophic denitrification and denitrification device based on sodium thiosulfate as an electron acceptor. Background technique [0002] Nitrogen compounds in nature are organic nitrogen compounds (proteins, nucleic acids, etc.), ammonia nitrogen (NH 4 + , NH 3 ), nitrate nitrogen (NO 3 - , NO 2 - ) and gaseous nitrogen (N 2 , NO, NO 2 etc.) exist. After a series of natural or artificially enhanced biotransformation processes, nitrogen is mostly present in the form of nitrate nitrogen (mainly nitrate nitrogen) before and after being discharged into natural water bodies. Due to the increasing frequency of human production and living activities, a large amount of nitrogen is discharged into natural water bodies, resulting in eutrophication of water bodies. At present, most of the large and medium-sized lakes and reservoirs in my country are fac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28
Inventor 周伟丽欧阳丽华王晖迟莉娜张振家
Owner SHANGHAI JIAO TONG UNIV
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