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Device and method for converting ammonia nitrogen in domestic sewage into N2O

A domestic sewage and ammonia nitrogen technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of non-recyclable, difficult to achieve enrichment, and low release, and achieve Reduce construction and operating costs, shorten enrichment time, and achieve efficient conversion effects

Active Publication Date: 2021-02-05
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
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  • Application Information

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Problems solved by technology

However, for domestic sewage, the traditional nitrification-denitrification process N 2 The release of O is very small, it is difficult to achieve its enrichment, and it cannot be recycled

Method used

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  • Device and method for converting ammonia nitrogen in domestic sewage into N2O
  • Device and method for converting ammonia nitrogen in domestic sewage into N2O
  • Device and method for converting ammonia nitrogen in domestic sewage into N2O

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts, as well as simple modifications made on this basis, all belong to the protection scope of the present invention.

[0033] like figure 1 As shown, the conversion of ammonia nitrogen to N 2 O's biological reaction device, which includes a biofilm reactor 1 and an integrated activated sludge reactor 2.

[0034] The biofilm reactor 1 is provided with the hollow fiber membrane 14 of the biofilm 15 attached to the growth, and the biofilm ...

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Abstract

The invention discloses a device and a method for converting ammonia nitrogen in domestic sewage into N2O. The device comprises a hollow fiber membrane biofilm reactor which microorganisms are attached to and grow on, and the biofilm reactor is respectively communicated with a water inlet pipe, an N2O collecting pipeline and an integrated activated sludge reactor; the integrated activated sludge reactor is provided with a microporous aerator and an inclined plate, and part of effluent is communicated with a return pipe to the biofilm reactor; and N2O generated in the biofilm reactor is separated and collected in real time through the negative pressure of the inner cavity of the hollow fiber membrane. The separation efficiency of the low-concentration N2O is improved, the enrichment time ofthe N2O is shortened, and meanwhile, liquid in the reactor is prevented from entering the inner cavity. According to the invention, low-concentration ammonia nitrogen in domestic sewage can be converted into N2O, and the conversion rate is higher than 85%.

Description

technical field [0001] The invention belongs to the technical field of environment and resource recovery, and mainly relates to a method for converting ammonia nitrogen in domestic sewage into N 2 O Apparatus and Methods. Background technique [0002] Biological denitrification of wastewater is an important direction of water treatment. The traditional principle of biological denitrification is to convert nitrogen into harmless N 2 and emitted to the atmosphere, however, the denitrification process also releases N 2 O. In recent years, studies have found that N 2 O is a potential renewable energy, which can be used as a racing car combustion aid, rocket oxidant, etc., providing an important scientific basis for the energy utilization of nitrogen in the sewage treatment process. However, for domestic sewage, the traditional nitrification-denitrification process N 2 The release of O is very small, and it is difficult to enrich it, let alone recycle it. [0003] Convert ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F3/00C02F101/16
CPCC02F3/12C02F3/00C02F2101/16Y02W10/10
Inventor 吕永涛王磊吝力朱传首苗瑞王旭东
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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