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Quick composting technique

A composting and new process technology, which is applied in the field of aerobic composting of organic wastes, can solve the problems of increased organic waste disposal, inability to play a supporting role, difficult sources of wood chips and other auxiliary materials, and achieves low operating costs, The effect of saving air supply time and shortening composting cycle

Inactive Publication Date: 2008-09-17
SHANGHAI ANSHI BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, traditional auxiliary materials such as sawdust, straw, and rice husks, due to their own decomposition during the composting process, lose their ability to absorb water, and cannot play a supporting role. Instead, they can only be used once and cannot be recycled. The increasing number of sawdust accessories has become a major problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] First, the dehydrated organic waste from a farm organic fertilizer factory in Shanghai was sampled and analyzed. The basic properties of the organic waste were: moisture content 80%, total organic matter 550g / kgDM, coliform value ≥ 24,000MPN / 100gDM. Then add sawdust with a moisture content of about 10% to 20% and special modified zeolite for composting as auxiliary materials, and the added amount is 15% and 5% of the weight of the organic waste respectively. Put the above materials into the dynamic aerobic fermentation bin closely matched by the ventilation system and the automatic stirring system. Control the weight of reflux material to be 40% of the weight of organic waste. Then stir in two directions, so that the fermentation dominant bacteria are evenly mixed into the material system. Turn on the air pump, control the ventilation rate at 300L / min, and directional stir for 20 minutes every 12 hours. After 7 days of treatment, the material is discharged, and the wei...

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Abstract

The invention relates to a method for composting organic wastes by blending renewable materials with matrixes, which relates to a novel process for aerobic compost treatment of organic wastes. The invention utilizes a dedicated modified zeolite for aerobic rapid compost treatment. The method comprises the following steps: modifying zeolite, mixing the modified zeolite with organic wastes as matrixes, allowing fermentation, sieving, and separating the dedicated modified zeolite from the treated organic wastes for cycle use. The dedicated modified zeolite has good adhesivity and can be used repeatedly without loss. The compost product has remarkable reduction effect. The utilization efficiency of compost equipment is high. The materials are loose and easy to be separated. The compost period is shortened by 1 / 3. The operational cost is reduced with high economic benefit. The inventive method is widely used for the aerobic compost treatment of various organic wastes.

Description

technical field [0001] The invention relates to a new process for aerobic composting treatment of organic waste. Specifically, it relates to a method for applying the special modified zeolite for composting as a fast composting accelerator to the aerobic composting process of organic waste. Background technique [0002] With the acceleration of urbanization in my country, the organic waste generated in cities will also increase significantly. At present, the disposal methods of urban organic waste include incineration, sanitary landfill and land utilization, among which land utilization has become an important disposal method. However, stabilization and harmless treatment must be carried out before land use. The stabilization and harmless treatment of organic waste mainly include: aerobic digestion, anaerobic digestion and alkaline stabilization. Among them, composting (aerobic composting treatment) is most commonly used. Composting is essentially a process of aerobic fe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F17/00
CPCY02W30/40
Inventor 单伟
Owner SHANGHAI ANSHI BIO TECH
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