Biogas-lift reinforced anaerobic reactor and application thereof

An anaerobic reactor and anaerobic reaction technology, applied to gas production bioreactors, biochemical instruments, anaerobic digestion, etc., can solve the problems of reduced processing efficiency, deterioration of mass transfer process, small stirring effect, etc., to achieve removal The effect of increasing the efficiency, improving the efficiency of sewage treatment, and saving land occupation

Inactive Publication Date: 2009-12-09
JIANGNAN UNIV
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Problems solved by technology

Traditional anaerobic reactors (such as UASB, EGSB reactors) often have slow digestion rate, low gas production, small agitation, deterioration of mass transfer process, and sludge loss, resulting in a decrease in treatment efficiency

Method used

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  • Biogas-lift reinforced anaerobic reactor and application thereof

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Embodiment Construction

[0023] Before the actual operation, the anaerobic reactor should first be inoculated with sludge. The volume of the sludge is about 1 / 2 of the volume of the reactor. Gradually increase the load of the reactor according to the gradient to domesticate the sludge, that is, start the reactor. Control the inlet water temperature at 30°C to 35°C, and the entire start-up process will take about 30 days.

[0024] After the start-up of the reactor, start to feed water continuously, adjust the pH of the feed water to 6.5-8.0, and inject the water into the pretreatment system by the water pump, and then into the anaerobic reactor by the water pump. The circulation flow rate should be determined according to the quality of the effluent water to control the loss of sludge The rate is 10‰, anaerobic fermentation is carried out under the condition of medium temperature (30℃~35℃), the influent COD is about 40000mg / L, the effluent is 5000~6000mg / L, and the COD removal rate of the anaerobic reac...

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Abstract

A biogas-lift reinforced anaerobic reactor and application thereof belong to the waste recycling processing technical field. In the invention, the anaerobic reactor consists of two anaerobic reaction chambers one above to the other in series. The biogas generated by a first anaerobic chamber at the lower part is taken as power to realize internal recycle of mixed liquid at the lower part, so that reinforced pretreatment can be carried out on waste water; post treatment is continuously carried out on the waste water in a second anaerobic reaction chamber at the upper part, so that water discharge can meet the predetermined treating requirement. The invention has the advantages of high stability and loading and can deal with waste water with high-concentration poisonous substance to generate biogas. In the invention, the composite recycle method containing internal recycle, external recycle and biogas recycle is used to improve mass transferring condition between microorganism and matrix, quicken reaction rate and increase waste water processing efficiency.

Description

technical field [0001] A biogas-lifting enhanced anaerobic reactor and its application belong to the technical field of waste resource treatment. Background technique [0002] Water pollution and water shortage are two major problems facing the world. At present, the total annual sewage discharge in my country is 39.5 billion m 3 , according to predictions, by 2050, my country's total sewage discharge will be as high as 120 billion m 3 . [0003] With the acceleration of my country's economic development and urban construction, the urban population has grown rapidly, and the water consumption for production and living has increased sharply. According to the statistics of Ziguang Investment Company of Tsinghua University, the annual growth rate of sewage and wastewater discharge in my country was 0.8% from 2001 to 2007, and it is estimated that the annual growth rate of sewage and wastewater discharge will be 0.1% by 2010. The volume will increase to 76.3 billion tons. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/107C02F9/14C02F3/28
CPCC12M21/04Y02E50/343C12M23/34Y02E50/30
Inventor 阮文权
Owner JIANGNAN UNIV
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