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Secondary compost fertilizer and secondary compost method

A technology for secondary composting and composting, which is applied in the field of municipal solid waste resource utilization, can solve the problems of insufficient compost maturity of municipal solid waste, and achieve the effects of increasing the possibility of resource utilization, saving resources, and convenient material selection.

Inactive Publication Date: 2015-12-09
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem of insufficient maturity of municipal solid waste composting in the prior art, the present invention provides a secondary composting fertilizer and method

Method used

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Effect test

Embodiment 1

[0048] A secondary compost fertilizer, prepared from municipal solid waste coarse compost, wood chips, urea, microbial agent, and water, wherein the municipal solid waste coarse compost is municipal solid waste that has undergone a composting treatment in a garbage comprehensive treatment plant The product; With the initial carbon-nitrogen ratio being 20, the initial water content being 65%, and the microbial inoculum being 0.02g / kg to calculate the consumption of wood chips, urea and microbial inoculum, wherein, ph is 6-8; Microbial agents consist of bacteria that produce amylase, protease, lipase and cellulase.

[0049]Wherein, the coarse composting of municipal solid waste is the product of municipal solid waste undergoing a composting treatment in a comprehensive waste treatment plant, and the raw material of the primary composting is municipal solid waste including paper, plastic, glass, metal, fabric, rubber, etc., which can be recycled Garbage, waste batteries, waste wa...

Embodiment 2

[0051] A kind of secondary composting method, comprises the following steps:

[0052] 1) Determining the carbon-nitrogen ratio, water content, weight and PH of municipal solid waste compost;

[0053] 2) Calculate the amount of urea, wood chips, and bacterial agents with an initial carbon-to-nitrogen ratio of 20, an initial water content of 65%, and a microbial agent of 0.02 g / kg;

[0054] 3) Adjust the pH value to 6-8;

[0055] 4) Add the woody powder into the coarse compost of garbage, and mix evenly;

[0056] 5) Spray urea into the coarse compost and mix evenly;

[0057] 6) Spray the bacterial agent into the coarse compost and mix evenly;

[0058] 7) Make the compost pile 1 to 2 meters long, 1 to 2 meters wide, and 1 to 2 meters high, and turn it every 2 to 3 days;

[0059] 8) Supplement the bacterial agent at 0.02g / kg every 9 days;

[0060] 9) The temperature of the pile body is maintained at 50°C to 70°C for 5 to 6 days, and when it automatically drops below 40°C and ...

Embodiment 3

[0064] A kind of secondary composting method, the specific embodiment comprises steps:

[0065] Measure the carbon-nitrogen ratio, water content, weight and pH of municipal solid waste compost, and the carbon-nitrogen ratio of sawdust and urea for later use;

[0066] According to the initial C / N of 20, the initial water content of 65%, and the bacterial dosage of 0.02g / Kg, the weight of urea, sawdust, water and bacterial agent to be added is calculated.

[0067] Determine whether the pH needs to be adjusted. If the pH is within the range of 6-8, no adjustment is required, otherwise, adjustment is required.

[0068] Dissolve the bacterial agent in warm water with 200 times the mass, and let it stand for 30-45 minutes until the bacteria are activated, and then use it for later use (note that if tap water is used, it needs to be placed for 48 hours to remove residual chlorine and prevent it from inhibiting the activity of microorganisms in the bacterial agent). At the same time,...

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Abstract

The invention provides a secondary compost fertilizer and a secondary compost method. In the invention, municipal domestic waste is used for coarsely composted, and by means of regulation of initial C / N ratio and water content and addition of a regulating agent and an inoculants, the coarse compost is finally decayed through pile turning during composting process and monitoring of temperature change. The invention provides a market outlet for the coarse compost which is not enough in decay degree, thereby improving recycling utilization of the municipal domestic waste. Meanwhile, the secondary compost fertilizer can be used in the fields of abandoned mine vegetation restoration, urban garden and road greening, and nursery and the like which seriously need foreign soil introduction. The secondary compost fertilizer solves the problem of less foreign soil source and large quantity of foreign soil.

Description

technical field [0001] The invention relates to the field of resource utilization of urban living garbage, in particular to a method for secondary composting and decomposing the rough compost of urban living garbage. technical background [0002] In recent years, the total amount of municipal solid waste treated by composting in my country has increased. In particular, Beijing has specified specific requirements for the amount of composted municipal solid waste in the "Twelfth Five-Year Plan". With the increase of the total amount of municipal solid waste treated by composting, the production of waste compost also increases. However, due to the relatively backward composting technology and equipment in my country, and the mixed collection of most urban domestic waste, the maturity of composting is not enough. Therefore, there are restrictions on popularization and application, resulting in no market for garbage composting, a large amount of composting has not been fully uti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F9/04C05F9/00
CPCY02A40/20
Inventor 郭小平杨庆楠张平苏昭辉周晔韩祖光邓川王乐
Owner BEIJING FORESTRY UNIVERSITY
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