Breeding bed for earthworm

A technology for breeding beds and earthworms, applied in the field of earthworm breeding beds, can solve the problems of large water content, suffocation and death of earthworms, poor air permeability, etc., and achieves the effects of low production cost, solving the air permeability problem, and reducing the space occupied by the land.
CN103070140AInactive Publication Date: 2013-05-01GUILIN UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
GUILIN UNIVERSITY OF TECHNOLOGY
Publication Date
2013-05-01
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a breeding bed for earworm. A bed body of the breeding bed for the earthworm is a rectangular frame of which the depth is 25-35cm, the length is 45-55cm and the width is 30-40cm; dense and uniform ventilation holes with aperture of 0.5-1.0cm are respectively formed in four walls and the bottom; a bed layer of the breeding bed for the earworm comprises four layers which sequentially include a dry straw layer, a lower lime sludge layer, a cow dung or pig dung layer and an upper lime sludge layer from bottom to top; the dry straw layer comprises dry straw with the length of 2-3cm and the thickness of 2-3cm; the lower lime sludge layer comprises sludge with the thickness of 5-10cm; the cow dung or pig dung layer comprises cow dung or pig dung with the thickness of 2-13cm; the upper lime sludge layer comprises sludge with the thickness of 5-10cm; and the bottom of the breeding bed is overhead, and the breeding bed is 5-8cm away from the ground. The breeding bed disclosed by the invention has the advantages of simple structure, low manufacturing cost, simplicity in operation, easiness for maintenance and suitability for breeding the earworm for treating residual sludge of municipal sewage.
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Description

technical field

[0001] The invention relates to an earthworm breeding bed, and the cultivated earthworms can treat surplus sludge of urban sewage plants. Background technique

[0002] With the continuous increase in the number and scale of urban (town) sewage treatment plants in our country, the surplus activated sludge output of sewage treatment plants is increasing. At present, the operation process of concentration-filtration-transportation (hereinafter referred to as "filter sludge") is used to dispose of the remaining activated sludge in sewage plants. The era of using filter sludge as fertilizer has become history due to heavy metal pollution. Although disposal methods such as burial and incineration are also very effective, they also impose a great burden on sludge disposal because they need to occupy a large amount of land or consume energy. With the increasing popularity of sewage treatment plants in small towns, the task of disposing of filter mud in our country i...

Claims

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