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A novel aerobic-anaerobic-aerobic biological treatment process for human excrement and straw

A technology for aerobic organisms and human excrement, applied in the field of agricultural environmental engineering, can solve the problems that straws are difficult to quickly absorb the moisture of human excrement, the moisture content of human excrement is high, and the fermentation speed is affected, so as to accelerate secondary aerobic conditions. Fermentation speed, rich organic matter content, and the effect of reducing water content

Active Publication Date: 2021-03-02
INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are still the following difficulties in the biological treatment of human excrement and urine: first, the moisture content of human excrement and urine is particularly high (about 90%), and a large amount of auxiliary materials need to be added in the treatment process for comprehensive moisture. This problem can be solved, but the straw has a high content of lignocellulosic substances, and the degradation rate is slow, and it is difficult for untreated straw to quickly absorb the water in human excrement and urine, which often affects the fermentation speed and slows down the fermentation process

Method used

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  • A novel aerobic-anaerobic-aerobic biological treatment process for human excrement and straw
  • A novel aerobic-anaerobic-aerobic biological treatment process for human excrement and straw
  • A novel aerobic-anaerobic-aerobic biological treatment process for human excrement and straw

Examples

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Effect test

Embodiment 1

[0033] Using a new type of aerobic-anaerobic-aerobic biological treatment of human waste and straw to prepare organic fertilizer, the steps are as follows:

[0034] (1) Pretreatment: Human excrement comes from the first-level septic tank, and plastic film and glass fragments are removed; corn stalks are crushed into 2-5 cm and set aside.

[0035](2) Aerobic primary fermentation: put the crushed corn stalks into the fermentation tank, add 3kg of ammonium sulfate per ton of stalks, dissolve the ammonium sulphate in water, and spray evenly on the stalks; Lignocellulose-degrading bacteria agent, mixed evenly, lignocellulose-degrading bacteria agent contains Cellulomonas flavin, Pseudomonas putida, Trichoderma konii, Streptomyces, the total effective number of viable bacteria is greater than 1×10 7 CFU / g; the moisture content of the material was adjusted to 45%, and the aerobic fermentation was carried out for 6 days; 9 CFU / g, the temperature is higher than 50°C.

[0036] (3) Ana...

Embodiment 2

[0040] Using a new type of aerobic-anaerobic-aerobic biological treatment of human waste and straw to prepare organic fertilizer, the steps are as follows:

[0041] (1) Pretreatment: Human excrement comes from the first-level septic tank, and plastic film and glass fragments are removed; rice straw is crushed into 2-5cm, and set aside.

[0042] (2) Aerobic primary fermentation: put the crushed rice straw into the fermentation tank, add 5kg of ammonium sulfate per ton of straw, dissolve the ammonium sulfate in water, and spray evenly on the straw; the inoculation amount is 3.0% of the straw mass. Lignocellulose-degrading bacteria agent, mixed evenly, lignocellulose-degrading bacteria agent contains Cellulomonas flavin, Pseudomonas putida, Trichoderma konii, Streptomyces, the total effective number of viable bacteria is greater than 1×10 7 CFU / g; the moisture content of the material was adjusted to 45%, and the aerobic fermentation was carried out for 6 days; 9 CFU / g, the tempe...

Embodiment 3

[0047] Using a new type of aerobic-anaerobic-aerobic biological treatment of human waste and straw to prepare organic fertilizer, the steps are as follows:

[0048] (1) Pretreatment: Human excrement comes from the first-level septic tank, and plastic film and glass fragments are removed; rice straw is crushed into 2-5cm, and set aside.

[0049] (2) Aerobic primary fermentation: put the crushed rice straw into the fermentation tank, add 4kg of ammonium sulfate per ton of straw, dissolve the ammonium sulfate in water, and spray evenly on the straw; the inoculation amount is 2.0% of the straw mass. Lignocellulose-degrading bacteria agent, mixed evenly, lignocellulose-degrading bacteria agent contains Cellulomonas flavin, Pseudomonas putida, Trichoderma konii, Streptomyces, the total effective number of viable bacteria is greater than 1×10 7 CFU / g; adjust the moisture content of the material to 45%, and carry out aerobic fermentation for 6 days; 9 CFU / g, the temperature is higher...

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Abstract

The invention discloses a novel aerobic-anaerobic-aerobic biological process for treating human excrement and straw. The process combines anaerobic and aerobic processes to realize the comprehensive utilization of human waste and straw. Through the aerobic fermentation of straw, the growth of lignocellulose-degrading bacteria is achieved, which accelerates the degradation of straw and reduces the cost of bacterial agent application; the anaerobic fermentation of straw and human feces effectively reduces the water content of human feces and accelerates The speed of the secondary aerobic fermentation of urine and straw promotes the temperature rise of the fermented material and makes the material fully decomposed. At the same time, Bacillus, which can inhibit the growth of intestinal pathogenic bacteria, is added to ensure that the product is harmless. The process has low energy consumption, high degree of harmlessness, rich organic matter content, stable quality and high safety, and is suitable for large-scale industrial production and has broad application prospects.

Description

technical field [0001] The invention relates to the field of agricultural environmental engineering, and more specifically relates to a novel aerobic-anaerobic-aerobic biological process for treating human excrement and straw. Background technique [0002] China is a country with a large population, and a large amount of human waste is produced every year. Without effective treatment, human waste will pollute the environment and pose potential health risks. Human waste is a typical misplaced resource, which is rich in nitrogen, phosphorus, potassium and organic matter. If it is made harmless, stabilized and reduced by scientific methods, it can turn waste into treasure and realize resource reuse . [0003] my country is also a big straw country in the world. With the continuous improvement of agricultural comprehensive production capacity and crop yield, there are regional, seasonal and structural surpluses of straw. A large amount of straw resources are not used, and the w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F17/20C05F17/50C05F17/80C05G1/00
CPCC05B7/00C05F17/50C05B15/00C05C3/00C05C9/00C05D5/00C05D9/02C05F3/00C05F3/04C05F11/00C05F11/08Y02W30/40
Inventor 徐培智顾文杰王维明解开治卢钰升李夏孙丽丽
Owner INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI