Method for breeding earthworm by using domestic sludge

A technology for domestic sludge and domestic sewage, which is applied in animal husbandry and other fields, can solve the problems of continuous treatment, etc., and achieve the effects of long-term domestication, improvement of treatment efficiency, and simple process

Active Publication Date: 2016-11-16
LIAONING HUADIAN ENVIRONMENTAL PROTECTION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for cultivating earthworms using domestic sludge. This method is suitable for the northern cold regions, and can solve the problem that earthworms cannot process domestic sludge continuously due to cold, and realize that domestic sludge can be p

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  • Method for breeding earthworm by using domestic sludge
  • Method for breeding earthworm by using domestic sludge

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The method for cultivating earthworms using domestic sludge has the following steps:

[0039] 1. Pre-treatment of sludge

[0040] Take the sludge produced by the domestic sewage treatment plant, control the moisture content at 72%, adjust the carbon-nitrogen ratio to 22, add straw to the sludge to make sludge mixture, and the volume ratio of straw to sludge is 3:7 .

[0041] 2. Make the earthworm base bed and introduce it

[0042] 1. The width of the greenhouse is 6.8 meters and the length is 120 meters. In the greenhouse, an earthworm base bed is made along the length of the greenhouse. The base material is the original earthworm bed, and a 10-meter-long rectangular working In the area, the bedding is arranged close to the side of the plastic sheet in the greenhouse. The nearest side of the bedding is 1.5 meters away from the root of the plastic sheeting. There is a 4-meter-wide working path along the length of the shed on the rear side of the shed; the bedding is 10...

Embodiment 2

[0059] The method for cultivating earthworms using domestic sludge has the following steps:

[0060] 1. Pre-treatment of sludge

[0061] Take the sludge produced by domestic sewage treatment plants, control the moisture content at 78%, adjust the carbon-nitrogen ratio to 29, add straw to the sludge to make sludge mixture, and the volume ratio of straw to sludge is 3:7 .

[0062] 2. Make the earthworm base bed and introduce it

[0063] 1. The width of the greenhouse is 7.8 meters and the length is 200 meters. Two earthworm beds are made symmetrically along the length of the greenhouse. The base material is the original earthworm bed. The bed is located on the side of the plastic cloth of the greenhouse. A 10-meter-long rectangular area disconnected in the middle is reserved as a working area. The nearest side of the bed is 1.5 meters away from the plastic root, and the other side of the foundation bed is 4.8 meters away from the wall, and this area is the work passage. Each...

Embodiment 3

[0079] The method for cultivating earthworms using domestic sludge has the following steps:

[0080] 1. Pre-treatment of sludge

[0081] Take the sludge produced by domestic sewage treatment plants, control the moisture content at 75%, adjust the carbon-nitrogen ratio to 25, add straw to the sludge to make sludge mixture, and the volume ratio of straw to sludge is 4:6 .

[0082] 2. Make the earthworm base bed and introduce it

[0083] 1. The width of the greenhouse is 9.8 meters and the length is 160 meters. In the greenhouse, four earthworm beds are made in parallel and arranged left and right. The base material is the original earthworm bed body, and 4.8 meters are left in the middle of the greenhouse The passage is wide, and the distance between the long side of the bed and the root of the plastic cloth of the greenhouse and the wall is 1.2 meters. This area is the aisle, and the 10-meter-long rectangular area in the middle of the greenhouse is reserved as a working area....

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Abstract

The invention discloses a method for breeding earthworms by using domestic sludge. The method is characterized by comprising the following steps: performing earlier stage treatment on sludge; preparing an earthworm medium bed and introducing earthworms; adding a mixed sludge material to the surface of the medium bed once every 5 or 7.5 days; spraying a palatability regulation liquid above the medium bed once after the first time of material addition; when the density of the earthworms is 3-4kg/m<2>, harvesting the earthworms, centrally luring grown earthworms once every 15 days, and expanding the bed when the mixed sludge material is 35-40cm high on the medium bed; taking off a high-density earthworm surface layer of 10-15cm thick on one side of the original medium bed and paving on a new medium bed by taking the central line as an axis; exposing the core of the original medium bed after bed expansion, uniformly taking out and piling at an appointed place, and finally resetting and turning over the original medium bed. The method is applicable to cold regions in north China, the problem that domestic sludge cannot be continuously treated because of the cold weather can be solved, the treatment efficiency can be improved, and the bed expansion speed is increased; the method is beneficial to long-term domestication of earthworms, and applicable to industrial large-scale domestic sludge treatment with earthworms.

Description

technical field [0001] The invention relates to a method for cultivating earthworms suitable for northern cold regions, in particular to a method for cultivating earthworms using domestic sludge. Background technique [0002] Conventional treatment methods such as incineration and landfill of domestic sludge cannot fundamentally solve the pollution problem. The calorific value of direct incineration of sludge is too low, and other secondary pollution such as harmful gas and dust pollution must be controlled; direct landfill of sludge is also There are problems of difficulty in compaction and natural fermentation, which directly affect the land reuse of landfill, and the sludge buried in the ground is also a potential threat to the environment. More importantly, most of the organic matter cannot be returned to the soil due to changes in the way organic waste is disposed of and farmers' fertilizer habits, disrupting the natural cycle of the land. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): A01K67/033
CPCA01K67/0332
Inventor 汪林王威王远飞汤红刘阳梁栋刘洋张云峰王长剑谷峰杨阳
Owner LIAONING HUADIAN ENVIRONMENTAL PROTECTION TECH
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