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Method for improving performance of methane produced by anaerobic reaction on manure

A technology for biogas and human feces production, applied in biological sludge treatment, waste fuel, etc., can solve the problem of anaerobic digestion of a single human feces raw material, achieve the effects of improving biological conversion rate, simple process, and improving gas production performance

Inactive Publication Date: 2013-03-13
BEIJING UNIV OF CHEM TECH
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Problems solved by technology

[0004] The purpose of the present invention is to be able to provide a method for improving the biogas production performance of human excrement. The method for mixing human excrement and sludge proposed by the present invention can be a necessary condition for the mixed material to reach a suitable pH value and start-up condition, and to improve the survival of microorganisms. Nutrient elements, this method can solve the problems existing in the anaerobic digestion of a single human feces raw material, thus providing a basis for engineering practice and improving gas production

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  • Method for improving performance of methane produced by anaerobic reaction on manure
  • Method for improving performance of methane produced by anaerobic reaction on manure
  • Method for improving performance of methane produced by anaerobic reaction on manure

Examples

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Embodiment 1

[0019] Biogas production performance of mixed anaerobic digestion of human manure and primary sludge in different proportions:

[0020] The human manure and the primary sludge after centrifugation or sedimentation are in the ratio of 1:0, 1:1, 2:1, 1:2, 0:1 to the total solid mass ratio (wherein 1:0 and 0:1 are respectively Pure sludge and pure human feces) are fully mixed;

[0021] Put the obtained mixed substance into a 2L Erlenmeyer flask anaerobic digestion reactor, inoculate the digested sludge of the sewage treatment plant, and mix thoroughly. 15000mg / L add water to make up to 1.5L working volume;

[0022] Adjust the organic loads of the substances in the reactor to be 50gTS / L, 65gTS / L, and 80gTS / L respectively. At this time, there are 3 loads in total, and each load has 5 ratios. The Erlenmeyer flask anaerobic digestion reactor was closed with a rubber stopper, and the reactor gas outlet was connected to the device for draining and recording gas through a gas pipeline...

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Abstract

The invention discloses a method for improving performance of methane produced by anaerobic reaction on manure, and the method comprises the following steps of: mixing manure with sludge after centrifugation or sedimentation in total solid weight ratio of (1-2):(2-1), placing a mixed material into an anaerobic digestion reactor, adding inoculated sludge, and reacting under the low temperature, middle temperature or high temperature condition. The method disclosed by the invention has the advantages that the process is simple, the operability is strong, two or more than two organic solid wastes can be treated at the same time, and the unit volatile solid gas yield is improved by 4.7-6.8 times compared with that of separate manure.

Description

technical field [0001] The invention belongs to the field of organic solid waste treatment, and in particular relates to a method for improving the anaerobic biogas production performance of human manure. Background technique [0002] China is the country that produces the most organic waste in the world, among which 21.41 million tons of human waste and 22 million tons of sludge are produced every year. If these organic wastes are not treated effectively, they will cause great harm to human health and the ecological environment. At present, the treatment of human feces is mainly based on harmless and fertilization research. For example, patent 1850736A discloses a treatment method for producing fertilizer from urban human feces, which is realized through the steps of separation, granulation, sterilization and drying of human feces. Effective use of human waste. However, this method requires special equipment, requires a large investment, and has limited product applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/04
CPCY02E50/30
Inventor 李秀金刘茹飞邹德勋袁海荣朱保宁
Owner BEIJING UNIV OF CHEM TECH
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