Method for judging nitrosation process of SBR process by liquid phase N2O concentration on-line detector

A nitrosation and detector technology, applied in the field of environmental engineering, can solve problems such as real-time control of N2O nitrosation process that is not mentioned, and achieve the effect of assisting process operating parameters and broadening the scope of application

Inactive Publication Date: 2017-09-29
CHANGAN UNIV
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Problems solved by technology

At present, regarding the N 2 There are many studies on the generation of O, but none of them mentioned N 2 O can be used as a control parameter to realize the real-time control of the nitrosation process.

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  • Method for judging nitrosation process of SBR process by liquid phase N2O concentration on-line detector
  • Method for judging nitrosation process of SBR process by liquid phase N2O concentration on-line detector
  • Method for judging nitrosation process of SBR process by liquid phase N2O concentration on-line detector

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Embodiment Construction

[0017] see figure 1 : The present invention adopts liquid phase N 2 The method for judging the nitrosation process of the SBR process by the O concentration online detector is to monitor the liquid phase N in the low-oxygen ammonium oxidation process online. 2 O concentration curve, according to the characteristics of the curve to judge the completion time of nitrosation reaction. Specifically: under aeration conditions, when N 2 The concentration of O rises first and then drops until it reaches the lowest point when it starts to rise, that is, this point is used as the judgment point for the completion of nitrosation (the time point when aeration is stopped). This point corresponds to the highest concentration of nitrite nitrogen in the solution, so as to realize the accumulation of nitrite nitrogen and the precise control of the SBR nitrosation process. If the aeration time is too long (continuing aeration beyond this point), it will lead to the conversion of nitrite nitr...

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Abstract

The invention discloses a method for judging nitrosation process of SBR process by a liquid phase N2O concentration on-line detector, according to the method, a curve of the liquid phase N2O concentration in ammonia oxidation process is monitored on line, and the time for completion of nitrosation reaction can be judged according to curve characteristics. The method provides a new technology using N2O as a nitrosation control parameter, compared with the traditional nitrosation control technique, the new technology can be used for real-time observing of the nitrosation processin in a more clear and intuitive way.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and relates to a method for judging the nitrosation process of SBR (sequencing batch bioreactor), especially a method for using liquid phase N 2 A method for judging the nitrosation process of the SBR process by the O concentration online detector. Background technique [0002] The short-cut nitrification and denitrification biological nitrogen removal process is to control the nitrification process to NO 2 - stage, followed by a carbon source for denitrification. Compared with the traditional full nitrification and denitrification process, this process saves the NO 2 - Oxidation to NO 3 - and by NO 3 - Revert to NO 2 - of two redundant processes, thus saving a theoretical 25% of the O 2 and 40% denitrifying carbon source (as CH 3 OH is the denitrification carbon source). In addition, the process also has the advantages of small amount of sludge generation, small re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/12
CPCC02F3/1263C02F3/302C02F2209/34Y02W10/10
Inventor 赵剑强葛光环陈莹杨文娟胡博李晓玲吴沛刘珺
Owner CHANGAN UNIV
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