Solid waste high temperature aerobic composting method using stereoscopic ventilating apparatus

A solid waste and ventilation device technology, applied in fertilization devices, applications, organic fertilizers, etc., can solve problems that affect the stability and uniformity of fermentation product quality, uneven fermentation, etc., and achieve shortened mass transfer distance and mass transfer efficiency High, improved stability and uniformity

Inactive Publication Date: 2009-02-25
李伟光 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the obvious uneven fermentation phenomenon in the upper and lower parts of the fermentation equipment during the aerobic fermentation process caused by the traditional bottom ventilati

Method used

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  • Solid waste high temperature aerobic composting method using stereoscopic ventilating apparatus
  • Solid waste high temperature aerobic composting method using stereoscopic ventilating apparatus

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Example Embodiment

[0010] Specific embodiment one: (see figure 1 ~ Figure 4) The three-dimensional ventilation device used in the method of this embodiment includes a fermentation tank 1, an inverted ventilation tank 2, a middle air distribution pipe 3, a bottom air distribution pipe 4 and a connecting pipe 5. The bottom air distribution pipe 4 is provided with air distribution holes 6. The bottom air distribution pipe 4 is set at the bottom of the fermentation tank 1, and the bottom air distribution pipe 4 is connected to the connecting pipe 5. The inverted ventilation tank 2 is fixed in the middle of the fermentation tank 1, and the middle air distribution tube 3 is fixed under the inverted ventilation tank 2. In the fermentation tank 1 on the side, a ventilation hole 7 is opened on the middle air distribution pipe 3; the process of this method is as follows: Step 1. Mix the organic solid waste and the conditioning agent in a volume ratio of 1:0.6 to 3, and put them in Aerobic fermentation is carr...

Example Embodiment

[0011] Specific implementation manner two: (see figure 1 ~ Figure 4) The inverted ventilation slot 2 in this embodiment is an inverted triangular slot or an inverted arc-shaped slot. The inverted ventilation slot 2 has a height of 5-30 cm and a width of 3-25 cm. The cross section of the inverted triangle groove is an isosceles triangle, and the apex angle is 30 degrees to 120 degrees. The diameter of the intermediate air distribution pipe 3 is 3-10 cm, and the diameter of the ventilation holes 7 on the intermediate air distribution pipe 3 is 0.3-2.5 cm.

Example Embodiment

[0012] Specific implementation manner three: (see figure 1 ~ Figure 4) The inverted ventilation slot 2 and the intermediate air distribution pipe 3 described in this embodiment are both horizontally arranged in the fermentation tank 1, and the inverted ventilation slot 2 and the intermediate air distribution pipe 3 are all one to six or more layers The distance between the upper and lower layers of the inverted ventilation slots 2 is greater than 0.1m, the horizontal distance of the inverted ventilation slots 2 is in the range of 0.2 to 2m, and the number of the inverted ventilation slots 2 is determined by the nature of the fermented organic solids and the size of the fermentation tank. It is decided that the blower sends air into the fermentation tank from the middle air pipe 3. The bottom ventilation of the fermentation tank uses a connecting pipe 5 to distribute air through the bottom air distribution pipe 4.

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Abstract

A high-temperature and aerobic composting method for solid wastes which adopts a vertical ventilation device relates to a high-temperature and aerobic composting method for the solid wastes. The composting method aims at solving the problems that in the aerobic fermentation process, the conventional bottom ventilation method causes obvious uneven fermentation at the upper part and the lower part of a stacking body in a fermentation device, thus quality stability and uniformity of the fermented product are affected. In the composting method, middle air distribution pipes are fixed in a fermentation tank arranged at the lower side of an inverted ventilating slot; both the bottom part and the middle part of the fermentation tank adopt intermittent ventilation type, the ventilation time is 5-30 minutes, intermittent time is 15-120 minutes and ventilation rate is 0.03-2m<3>/(min m<3> mixing materials). The composting method increases the contact area between air and materials; air direction forms a reverse rotational flow, which increases residence time of fresh air in the fermentation device, thus improving the mass transfer efficiency, and the operational cycle of a single fermentation is shortened by over 1/4.

Description

technical field [0001] The invention relates to a high-temperature aerobic composting method for solid waste. Background technique [0002] With the rapid development of the economy, the total amount of various organic solid wastes produced in our country is increasing day by day, because organic solid wastes contain a large amount of easily degradable and corrupt components, if not properly disposed of, they will generate a large amount of foul smell and breed mosquitoes and flies for a long time and pathogenic microorganisms, and produce high-concentration leachate, especially organic solid waste with high water content and low porosity such as livestock and poultry manure, organic waste, sewage plant sludge, petroleum waste, etc. These problems are more prominent and seriously affect The surrounding environment and the health of residents. [0003] High-temperature aerobic composting has attracted increasing attention because it can simultaneously realize the reduction, ...

Claims

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Application Information

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IPC IPC(8): C05F17/00
CPCY02W30/40
Inventor 李伟光王科王璐璐邹锦林王广智
Owner 李伟光
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