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Processing method of hot wind coupling biodrying for domestic waste

A technology of domestic waste and biological drying, applied in chemical instruments and methods, solid waste removal, transportation and packaging, etc., can solve problems such as affecting the growth of microorganisms, reducing degradable substances, reducing treatment efficiency, etc., and achieving less heat loss. , The effect of promoting moisture removal and heat transfer efficiency

Active Publication Date: 2016-10-26
DALIAN UNIV OF TECH
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Problems solved by technology

However, the preparation and storage of microbial agents require strict control and high cost, and further reactivation is required before inoculation, making the operation complicated
The reuse of some products of inoculation fermentation materials will reduce the treatment efficiency, reduce the degradable substances in domestic waste, and accumulate metabolites, which will affect the growth of microorganisms

Method used

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  • Processing method of hot wind coupling biodrying for domestic waste

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Embodiment Construction

[0018] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0019] This implementation case is used for domestication of materials and inoculation drying reaction respectively to realize continuous treatment of domestic waste. The initial moisture content of domestic waste is 63%, and the proportions of each component are: kitchen waste 62%, plastic 17%, paper 6%, wood 5%, and other (inorganic substances such as glass and ash) 10%. Household waste is first processed through bag breaking, and large debris and metals are removed by sorting, and then undergoes secondary crushing. After crushing, the particle size of domestic waste is reduced to 5-10cm, and it is transported into the biological drying reactor through the conveyor belt. Double helix shaft stirring realizes domestic garbage turning and mixing. The reactor is equipped with a 9-19 high-pressure centrifugal ...

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Abstract

The invention relates to a processing method of hot wind coupling biodrying for domestic waste, and belongs to the field of processing of domestic waste. The processing method comprises staged heating domestication and hot wind coupling inoculation drying. Staged heating is carried out from 35 DEG C to 50 DEG C for domestication to promote microbial community succession, and high-activity materials are obtained through domestication for 3-4 days. In a process of hot wind coupling inoculation drying, hot wind quantity is regulated according to temperature feedback, the material temperature is maintained in a range of 50-60 DEG C, and the process is stably performed. Through a joint action of heat production through biological fermentation and hot wind, high-speed dehydration of waste is realized, the moisture content of the final waste is reduced to lower than or equal to 25%, and the heat value is increased to 114%. Therefore, the waste is convenient for incineration and resource utilization. According to the method, biodrying is divided into two processes for continuous cooperative operation, and the reaction period is effectively shortened. Efficient heat transmission is conducted through hot wind, and the drying efficiency is greatly increased. The domestication and inoculation processes are simple to operate, the operation cost is low, and the period is short. The method can be taken as an effective approach for drying domestic waste.

Description

technical field [0001] The invention belongs to the field of domestic waste treatment and relates to a method for domesticating microorganisms and drying domestic waste. The rapid acclimatization and efficient dehydration process can be realized by hot air coupling, which can be used as some ways to reduce the amount of domestic waste and make resource utilization. Background technique [0002] With the continuous development of my country's society and economy and the continuous improvement of people's living standards, my country's domestic waste has increased year by year. Incineration power generation has the characteristics of high-efficiency reduction and harmless resource utilization. In recent years, the proportion of domestic waste disposal has gradually increased. improve. However, the output of domestic waste in my country is huge, and the high moisture content of domestic waste has become an important factor for its intractability. In order to improve the level o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
CPCB09B5/00B09B3/40
Inventor 李爱民马姣张雷
Owner DALIAN UNIV OF TECH
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