Method for preparing microbial compound organic fertilizer from domestic sludge

A domestic sludge and microbial technology, applied in the direction of microbial-based methods, the preparation of organic fertilizers, the treatment of biological organic parts, etc., can solve the problems of high cost and complicated process, and achieve the effect of improving the environment and reducing the occurrence of pests and diseases

Inactive Publication Date: 2021-04-06
重庆市放歌农业科技有限公司
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Problems solved by technology

For example, Chinese patent CN103172415B discloses a method for producing Paenibacillus polymyxa microbial fertilizer from surplus sludge as a resource. The surplus sludge produced in the sewage treatment process is used as the main medium raw material, and the method of liquid fermentation is used to produce Paenibacillus polymyxa Bacillus microbial fertilize

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  • Method for preparing microbial compound organic fertilizer from domestic sludge
  • Method for preparing microbial compound organic fertilizer from domestic sludge
  • Method for preparing microbial compound organic fertilizer from domestic sludge

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A kind of method utilizing domestic sludge to prepare microbial composite organic fertilizer, comprises the following steps:

[0043] (1) Adjust the sludge (with a moisture content of about 80%) from the sewage treatment plant to a moisture content of less than or equal to 50% through a compressor;

[0044] (2) Add 100kg of straw, 300kg of sawdust, 60kg of bean dregs, 30kg of oil cake and 30kg of dung into 750kg of sludge (moisture content 50%), mix and stir evenly;

[0045] (3) Add 6 kg of functional compound microbial strains to the material in step (2), stir evenly to obtain a mixed material to be fermented, and adjust the moisture content of the mixed material to be fermented to 45%;

[0046] (4) Input the material evenly mixed in step (3) into the fermentation tank and spread it flat, turn on the blower to supplement oxygen, and keep static fermentation for 24 hours at a temperature of 20°C;

[0047] (5) High-temperature stirring fermentation stage: after static f...

Embodiment 2

[0052] (1) Adjust the sludge (with a moisture content of about 80%) from the sewage treatment plant to a moisture content of less than or equal to 60% through a compressor;

[0053] (2) Add 80kg of straw, 500kg of sawdust, 30kg of bean dregs, 20kg of oil cake and 20kg of dung into 650kg of sludge (moisture content 60%), mix and stir evenly;

[0054] (3) Add 4kg of functional compound microbial strains to the material of step (2), stir evenly to obtain the mixed material to be fermented, and adjust the moisture content of the mixed material to be fermented to 58%;

[0055] (4) Input the material evenly mixed in step (3) into the fermenter and spread it flat, turn on the blower to supplement oxygen, and keep static fermentation for 24 hours at a temperature of 30°C;

[0056] (5) High-temperature turning fermentation stage: after static fermentation, detect the temperature and humidity of the mixed material in the fermentation tank, keep the temperature at 60°C, keep the moisture...

Embodiment 3

[0061] (1) Adjust the sludge (with a moisture content of about 80%) from the sewage treatment plant to a moisture content of less than or equal to 50% through a compressor;

[0062] (2) Add 150kg of straw, 350kg of sawdust, 30kg of bean dregs, 20kg of oil cake and 30kg of dung into 800kg of sludge (moisture content 50%), mix and stir evenly;

[0063] (3) Add 7kg of functional composite microbial strains to the material in step (2), stir evenly to obtain a mixed material to be fermented, and adjust the moisture content of the mixed material to be fermented to 40%;

[0064] (4) Input the material evenly mixed in step (3) into the fermenter and spread it flat, turn on the blower to supplement oxygen, and keep static fermentation for 36 hours at a temperature of 10°C;

[0065] (5) High-temperature turning fermentation stage: after static fermentation, detect the temperature and humidity of the mixed material in the fermentation tank, keep the temperature at 65°C, keep the material...

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Abstract

The invention discloses a method for preparing a microbial compound organic fertilizer from domestic sludge. The method comprises the following steps: adding 80-150 parts of straws, 300-500 parts of sawdust, 30-60 parts of bean dregs, 20-30 parts of oil cakes and 30-60 parts of excrement residues into 650-800 parts of sludge; adding 4-7 parts of functional composite microbial strains, and uniformly stirring; carrying out static fermentation for 24-36 hours; carrying out high temperature overturning fermentation, wherein the temperature is kept at 60-70 DEG C, the water content is 48%-52%, and the mixture is turned over once every 12-24 h and is totally turned over for 7-10 times; carrying out low temperature overturning fermentation, wherein the temperature is kept at 35-50 DEG C, the water is reduced gradually by 2-4% each time, and the mixture is turned over once every 12-24 h and is totally turned over for 5-8 times; and drying and cooling the fermented material until the water content is lower than 30% to obtain the powdery microbial compound organic fertilizer. By adjusting the proportion of the domestic sludge, the organic waste and the functional microbial agent and controlling the fermentation mode, the fermentation temperature, the fermentation humidity and the fermentation time in the fermentation process, the prepared microbial compound organic fertilizer contains various functional bacteria and trace elements, the quality and the yield of crops, fruits, vegetables and tea can be remarkably improved, and the environment of the planting soil is conditioned and improved.

Description

technical field [0001] The invention relates to the technical field of microbial fertilizer and sludge resource utilization, in particular to a method for preparing microbial compound organic fertilizer by using domestic sludge. Background technique [0002] With the continuous advancement of urbanization, the amount of urban sewage treated by urban sewage treatment plants has increased significantly, and the ensuing problem is that the production of domestic sludge from sewage treatment plants has also gradually increased. The sludge produced in the process of urban sewage treatment is very unfavorable to the environment. Because the organic matter content in the sludge is high and it is easy to deteriorate, if it contains a large number of parasites and pathogens, if it cannot be treated effectively and in time, it will pollute the water source, air and soil again. The environment poses a hazard. Therefore, the disposal and resource utilization of sludge is one of the pro...

Claims

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Application Information

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IPC IPC(8): C05G3/60C05G3/80C05F17/20C05F17/50C05F17/70C05F17/80C05F17/90C12N1/20C12N1/16C12N1/14C12R1/125C12R1/10C12R1/07C12R1/11C12R1/465C12R1/065C12R1/69C12R1/685C12R1/885C12R1/79C12R1/645C12R1/02
CPCC05G3/60C05G3/80C05F17/20C05F17/50C05F17/70C05F17/80C05F3/00C05F17/90C12N1/20C12N1/16C12N1/14C05F5/002C05F7/00C05F11/00Y02W30/40
Inventor 刘朝文刘丁豪
Owner 重庆市放歌农业科技有限公司
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