Continuous biological drying method and equipment for organic solid waste with high moisture content

Abstract

The invention provides a continuous bio-drying method and continuous bio-drying equipment for organic solid wastes with high water content. The method is characterized in that more than two organic solid wastes with high water content are mixed and directly bio-dried; after fresh sludge with high water content is premixed with framework solid waste ingredients, the premix is transferred to a natural gravity drainage drying zone in a bio-drying zone by using a grab distribution taker, the materials are turned by a turner, mixed uniformly and stood for pre-fermentation, and water in the materials flows from high altitude to a bottom ventilation channel by virtue of natural gravity, is converged and flows out; and after the moisture and the temperature reach preset values, the materials are automatically turned by the turner and transferred to a quick high-temperature bio-drying zone in the bio-drying zone, the water content and temperature of the bio-dried materials reach set values, and the materials are transferred to an ageing zone by transport equipment. By adopting the method and the equipment, the organic solid wastes can be continuously bio-dried, so that the cost for treating the organic solid wastes is reduced and the production efficiency is high.

Description

technical field [0001] The invention relates to a continuous biological drying method and equipment for high-moisture organic solid waste (organic sludge, organic waste residue, filter mud, livestock manure, etc.), belonging to the fields of environmental protection and waste comprehensive utilization. Background technique [0002] With the development and progress of my country's social productive forces, my country's urbanization process has accelerated, and a large number of rural population has become non-agricultural population, gathering in cities and towns. The increase in population and the development of industry have made the problem of urban water pollution increasingly serious. In order to cope with the increasing domestic sewage and industrial sewage, the scale of urban sewage treatment plants is getting bigger and bigger. The amount of municipal domestic sludge presents a geometric order of magnitude increase. The number of processing and deep-processing indu...

AI Technical Summary

Problems solved by technology

[0005] In addition, most projects use special mixing equipment and facilities (disadvantages: the proportion of fresh sludge is relatively large, the moisture uniformity of the mixed material is low, the particles of the material are large, and the bulkiness of the particles is low) and the material The static stacking method occupies a relatively large area, and the logistics volume of material handling and transportation is relatively large

Many patents need to add materials such as straw and wood chips. From the perspective of large-scale and continuous biological drying sludge process production, the stability of the source of straw materials (crops have seasonality) and cost expenditure (materials) There are uncertain risks in the controllability of price, storage, transportation of light parabens, cutting, drying and processing, etc.

Another disadvantage is that the bio-drying method of aerobic composting fermentation and drying will lengthen the process (for example, an independent pre-mixing process needs to be added in the front stage, and a screening process needs to be added in the latter stage to separate the dried sludge from the sludge. Straw), increase energy consumption, and increase the total amount and volume of dried materials at the same time, without maximally achieving the purpose of volume reduction

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