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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
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  • 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 ventilation method, thus affecting the stability and uniformity of the quality of the fermentation product To solve the problem of sex, provide a high-temperature aerobic composting method for solid waste using a three-dimensional ventilation device

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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specific Embodiment approach 1

[0010] Specific implementation mode one: (see figure 1 ~ Fig. 4) The three-dimensional ventilation device adopted in the method of this embodiment comprises a fermentation tank 1, an inverted ventilation tank 2, an intermediate air distribution pipe 3, a bottom air distribution pipe 4 and a connecting pipe 5, and the bottom air distribution pipe 4 has an air distribution hole 6, The bottom air distribution pipe 4 is arranged at the bottom of the fermentation tank 1, the bottom air distribution pipe 4 is connected with the connecting pipe 5, the inverted ventilation tank 2 is fixed in the middle of the fermentation tank 1, and the middle air distribution pipe 3 is fixed under the inverted ventilation tank 2 In the fermenter 1 on the side, there is a ventilation hole 7 on the air distribution pipe 3 in the middle; the process of this method is as follows: Step 1, after mixing the organic solid waste and the conditioning agent according to the volume ratio of 1:0.6~3, put it into ...

specific Embodiment approach 2

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

specific Embodiment approach 3

[0012] Specific implementation mode three: (see figure 1 ~ Fig. 4) The inverted ventilation slot 2 and the middle air distribution pipe 3 described in this embodiment are both arranged horizontally in the fermentation tank 1, and the inverted ventilation slot 2 and the middle air distribution pipe 3 are all one to six or more layers , the space between the upper and lower layers of inverted ventilation slots 2 is greater than 0.1m, and the horizontal spacing of the inverted ventilation slots 2 is within the range of 0.2 to 2m. The number of inverted ventilation slots 2 is determined by the properties of fermented organic solids and the size of the fermentation tank. It is determined that the air blower is sent to the fermenter by the middle air distribution pipe 3. The ventilation at the bottom of the fermentation tank adopts the connection pipe 5 to distribute the 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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