Method for treating sludge in vermiculture

Abstract

The invention belongs to a method for treating sludge in vermiculture in the field of sludge treatment. The method comprises the steps that sludge and agricultural wastes are mixed, subjected to fermentation pretreatment, cooled down and added to a vermiculture bed, the sludge is converted into vermicompost through ingestion and digestion of earthworms, and two products of earthworms and vermicompost are obtained; the vermiculture bed is defined by an impermeable wall body, and the vertical face structure of the bed body in the wall body comprises an impermeable layer, and adjusting layer and a cultivation layer in sequence from bottom to top; a perforating drainage pipe and a perforating air distribution pipe are arranged at the bottom of the adjusting layer; the surface layer of the cultivation layer is a composite layer comprising a straw curtain, ginkgo leaves and decoction dregs. The method for treating the sludge in vermiculture overcomes the defect that a complete treatment system is not yet formed in the existing technology of treating the sludge through the earthworms. By means of the method for treating the sludge in vermiculture, a pollution source is controlled in the sludge treatment process, vigor of the earthworms is improved, and the sludge treatment amount is increased, so that the large-scale and standardized field vermiculture technology is achieved.

Description

technical field [0001] The invention belongs to the field of sludge treatment, and in particular relates to a method for treating sludge by earthworm breeding. Background technique [0002] my country's sludge treatment business started late, and the phenomenon of focusing on "water" and neglecting "mud" has existed for a long time. At present, less than a quarter of the existing sewage treatment industry has stable treatment facilities such as incineration, comprehensive utilization, and deep dehydration landfill. Less than 1 / 10 of the technology and supporting equipment are relatively complete, and few of them can operate normally; my country's traditional sludge independent landfill disposal technology has problems such as large infrastructure investment, low load, difficult operation and management, and lack of operating experience. . Mixed landfill with garbage has a great impact on the properties of the garbage dump, brings safety hazards to the garbage dump, and blocks...

AI Technical Summary

Problems solved by technology

[0004] However, earthworm sludge treatment technology has not yet been applied on a large scale, and some key issues have not been resolved, such as sludge acceptance requirements, sludge pretreatment, parameter control during sludge disposal, product utilization, and establishment of pollution prevention and control systems etc. A complete set of disposal system has not yet been formed; at the same time, there is a lack of engineering examples of using earthworms to treat sludge, so more in-depth research is needed

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