Biogas generating pit for co-processing domestic garbage and human dejecta of rural scattered inhabitants

A technology for domestic waste and biogas digester, which is applied in the field of biogasification and utilization systems, can solve the problems of no technical solution for the combined use of biogas digesters, interruption of production and domestic water supply, and odor of tap water, etc., and achieves a significant warming effect and reduces Cost of living, effect of long service period

Active Publication Date: 2011-09-07
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In April 2007, a large area of ​​cyanobacteria bloom appeared in Taihu Lake, and then the water source of Taihu Lake was polluted, and the tap water became foul-smelling. Most of the production and domestic water supply in Wuxi City was interrupted, causing major economic losses and serious social impacts.
[0008] There are still a series of problems on how to treat domestic sewage and domestic garbage together, and no specific technical solutions have been given on how to combine them with biogas digesters

Method used

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  • Biogas generating pit for co-processing domestic garbage and human dejecta of rural scattered inhabitants
  • Biogas generating pit for co-processing domestic garbage and human dejecta of rural scattered inhabitants
  • Biogas generating pit for co-processing domestic garbage and human dejecta of rural scattered inhabitants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The design scale is a family of 5 people. After removing the inert substances, glass, dregs, bricks, plastics, etc. from the domestic waste 6 (the main component is kitchen waste), it is chopped to less than 5.0 cm. Feed port 1 is fed with 10kg per week, and feed port 1 is connected to the toilet through pipe 9 at the same time. The solid-liquid ratio between the domestic garbage loaded for the first time and the domestic sewage recharged daily is 50:1. After the operation is stable The solid-to-liquid ratio of daily filling of new garbage and recharge of domestic sewage is 1:1. After the two are mixed, they enter into the 2 main fermentation tanks under the action of gravity, and the elevation differences between the toilets on the second floor, the toilets on the ground floor and the access pipes of the biogas digesters are 6.0 m and 2.5 m, respectively. The design size of the main fermentation tank and the second fermentation tank is 10m 3 (Length 3129mm*Width 1600m...

Embodiment 2

[0031] The design scale is a family of 3 people. After removing inert substances, glass, dregs, bricks, plastics, etc. from domestic waste 6 (the main component is kitchen waste), it is chopped to less than 5.0 cm, and passed through 1 6.0 kg is put into the feed port every week, and the toilet is connected to the feed port 1 through the pipe 9 at the same time. The solid-liquid ratio between the domestic garbage loaded for the first time and the domestic sewage recharged every day is 20:1, and the operation is stable. Afterwards, the solid-to-liquid ratio of daily loading of new garbage and recharged domestic sewage is 1:5. After the two are mixed, they enter the main fermentation tank 2 under the action of gravity, and the elevation differences between the toilet on the second floor, the toilet on the ground floor and the access pipe of the biogas digester are 5.5 m and 2.0 m, respectively. The design size of the main fermentation tank and the second fermentation tank is 10 ...

Embodiment 3

[0034] The basic treatment device and method are the same as in Example 1, except that the solid-to-liquid ratio between the domestic garbage loaded for the first time and the domestic sewage recharged every day is 30:1, and the solid-liquid ratio of daily loading of new garbage and domestic sewage recharged after the operation is stable The liquid ratio is 1:3. The results show that the treatment effect is basically the same as that of Example 1.

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PUM

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Abstract

The invention discloses a biogas generating pit for co-processing domestic garbage and human dejecta of rural scattered inhabitants. The biogas generating pit comprises a main fermenting tank, a second grille fermenting tank, human dejecta and domestic garbage inlets and biogas slurry and biogas residue outlets, wherein the human dejecta and the domestic garbage are delivered into the main fermenting tank through the dejecta and domestic garbage feed inlets; the main fermenting tank is connected with the second grille fermenting tank; a separating grille is arranged between the main fermenting tank and the second grille fermenting tank and used for separating biogas slurry and biogas residues; the second grille fermenting tank is connected with the biogas slurry outlet; and the main fermenting tank is connected with the biogas residue outlet. The biogas generating pit has the advantages of comprehensively considering the processing and resource utilization of the domestic garbage and the human dejecta, and overcoming the defect of the conventional underground biogas generating pit that gas production is low in winter because of low temperature. The biogas generating pit can turn the biogas slurry and the biogas residues into fertilizers and return into the field directly, and can provide an engineering reference for controlling rural widespread pollution and improving rural ecology and environment.

Description

technical field [0001] The invention relates to a biogas utilization system, in particular to a biogas pit for co-processing domestic garbage and human excrement of scattered residents in rural areas. Background technique [0002] With the rapid development of my country's economy, the quality of water environment continues to decline. Among them, the Taihu Lake Basin is one of the most economically developed areas in my country. The linkage effect of the regional economy has brought about rapid changes in the rural production and living patterns in this basin. This led to a substantial increase in the level of environmental pollution. In April 2007, a large-scale cyanobacteria bloom appeared in Taihu Lake. Subsequently, the water source of Taihu Lake was polluted, and the tap water became foul-smelling. Most of the production and domestic water supply in Wuxi City was interrupted, causing major economic losses and serious social impacts. The main reason for the large-scale...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/107C02F11/04
CPCY02E50/343C12M23/18C12M29/04C12M23/58C12M47/10C12M21/04Y02E50/30
Inventor 张后虎张毅敏高月香蔡金榜何斐胡源
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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