Quick sludge composting method for co-drying of earthworm compost

Abstract

The invention discloses a quick sludge composting method for co-drying of earthworm compost. The method comprises the following steps that (1) after sludge earthworm casts is laid on a middle-layer earthworm bed, earthworms are inoculated, and after sludge is granulated, a top-layer earthworm ridge is carpeted with sludge particles; (2) a lower-layer earthworm collection bed, the middle-layer earthworm bed and the top-layer earthworm ridge are stacked, the ridge is covered with breathable black-out cloth, and the earthworms crawl from the middle layer to the upper layer to treat the sludge particles for 7-10 days; (3) the top-layer earthworm ridge is naturally air-dried for 2 days and taken away, and the earthworms automatically crawl into the middle-layer earthworm bed; (4) fresh earthworm casts in the middle-layer earthworm bed are shoveled out to prepare a turbid solution for inoculating florae, the turbid solution is sprayed in the sludge in the top-layer earthworm ridge, and stabilizing is carried out for 7-10 days to form the earthworm compost; (5) a new earthworm ridge is added on the middle-layer earthworm bed as the top-layer earthworm ridge, the operation processes are repeated, and the earthworm compost can be obtained constantly. The quick sludge composting method for co-drying of the earthworm compost has the advantages that the sludge composting treatment cycle ofthe earthworms is shortened, continuous treatment of the sludge earthworm casts can be achieved, the earthworms do not need to be taken out or sorted, and the water content of the earthworm compost is low.

Description

technical field [0001] The invention belongs to the technical field of sludge resource treatment of environmental engineering / municipal engineering, and in particular relates to a rapid sludge fertilization method for synergistic drying of earthworm composting. Background technique [0002] With the rapid advancement of urbanization in our country, the output of sewage sludge is increasing, and the workload of its treatment is increasing, which makes the treatment and disposal of sewage sludge an important problem to be solved urgently in the water treatment industry. At present, my country's sludge treatment and disposal methods mainly include incineration, landfill, high-temperature composting, anaerobic digestion, etc., but due to the large differences in economic levels and the complexity of sludge components in various regions, there is still a lack of safe, effective, economical and environmentally friendly sludge in various regions. Handle disposal measures. Vermicomp...

AI Technical Summary

Problems solved by technology

[0004] 1. The treatment cycle of earthworm sludge composting technology is longer;

[0005] 2. Earthworms are easy to die in the compost body;

[0006] 3. The water content of sludge vermicompost is high;

[0007] 4. High levels of pathogenic bacteria and harmful substances;

[0008] 5. Lack of a complete set of processing technology and equipment;

[0009] 6. Difficult to sort earthworms

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