Method for improving operation stability of anaerobic reactor

An anaerobic reactor and stability technology are applied in the field of anaerobic biological treatment of high-concentration organic wastewater to achieve the effect of improving stability

Inactive Publication Date: 2007-08-15
NANJING AGRICULTURAL UNIVERSITY
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Problems solved by technology

This is also the main reason why the actual operating anaerobic reactor load is far lower than the load that the test device can achieve.

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  • Method for improving operation stability of anaerobic reactor

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Embodiment Construction

[0026] The specific implementation process of the present invention is described below.

[0027] For a newly built anaerobic reactor, in the reactor according to 0.5KgMLVSS / m 3 The amount of dosage inoculated with other anaerobic reactor residual sludge (or according to 0.SKgMLVSS / m 3 Inoculate the remaining sludge treated by anaerobic digestion in urban domestic sewage treatment plants), and then control the influent COD volume load at 0.5-0.6kg / m 3 d Continuous operation, when the anaerobic reactor begins to produce biogas continuously and stably, the COD removal rate of the entire anaerobic reactor reaches more than 75%, it can be considered that the anaerobic reactor has reached a stable operation at this load level, and maintains this state Continue to run for more than 10 days and enter the subsequent load lifting stage;

[0028] In the original volume load 0.6kg / m 3 Gradually increase the load to 1.5kg / m at the level of d 3 .d, add exogenous propionic acid to the in...

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Abstract

The invention provides a method to improve running stability and prevent methylacetic acid accumulation for anaerobic reactor. Wherein, adding outer methylacetic acid and nickel ion both of given concentration during treating anaerobic sludge to enhance the decomposition capacity of the sludge to degrade excessive methylacetic acid when the concentration of methylacetic acid rising as technique condition varying during reactor running. This invention improves reactor stability to feed-water impact and technique condition oscillating (as in figure 3).

Description

1. Technical field [0001] The invention relates to a method for improving the operation stability of an anaerobic reactor, which belongs to the sewage treatment technology in the field of environmental protection engineering and is mainly used in the anaerobic biological treatment process of high-concentration organic wastewater. 2. Technical background [0002] The anaerobic biological treatment process of high-concentration organic wastewater is also called anaerobic digestion. It is a collaborative metabolism of fermentative bacteria and methanogenic bacteria under anaerobic conditions to decompose organic pollutants and produce CH 4 and CO 2 the process of. Compared with the conventional aerobic treatment, the anaerobic digestion process has the advantages of high organic load, low energy consumption, and less residual sludge production in the treatment of organic wastewater. At the same time, the biogas produced in the anaerobic digestion process is a very good It is ...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C02F3/28
Inventor陈立伟胡江蔡天明沈标吕百韬
OwnerNANJING AGRICULTURAL UNIVERSITY