Method for cultivating earthworms in greenhouses using cow dung as bed base and using domestic sludge

A technology for greenhouses and domestic sludge, applied in animal husbandry and other directions, can solve problems such as the inability of continuous treatment of biochemical sludge, and achieve the effects of increasing the probability of survival, reducing contact area, and improving treatment efficiency.

Active Publication Date: 2018-11-13
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 in greenhouses with cow dung as the bed base and using domestic sludge. This method is suitable for northern cold regions and can solve the problem that earthworms can not be treated continuously due to cold It can realize direct biological treatment of biochemical sludge without fermentation, which improves the treatment efficiency, increases the processing speed and bed expansion speed of earthworm beds; it is beneficial to the long-term domestication of earthworms, and is suitable for large-scale industrial treatment of biochemical sludge by earthworms

Method used

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  • Method for cultivating earthworms in greenhouses using cow dung as bed base and using domestic sludge

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Experimental program
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Effect test

Embodiment 1

[0038] 1. Pre-treatment of sludge

[0039] Take the sludge produced by the domestic sewage treatment plant, control the moisture content at 70%, adjust the carbon-nitrogen ratio to 20, add straw to the sludge to make sludge mixture, and the volume ratio of straw to sludge is 4:6 .

[0040] 2. Make the earthworm base bed and introduce it

[0041] 1. The width of the greenhouse is 8.8 meters and the length is 100 meters. Two earthworm base beds are made in the greenhouse. The base material is fermented and decomposed cow dung. The two base beds are arranged along the length of the greenhouse and are respectively located in the greenhouse On the front and rear sides, a 10-meter-long area is reserved at both ends of the greenhouse as the working area. The nearest side of one of the foundation beds is 1.2 meters away from the root of the plastic cloth of the greenhouse, and the nearest side of the other foundation bed is 1.2 meters away from the wall. In the middle of the greenho...

Embodiment 2

[0058] 1. Making earthworm base bed introduction

[0059] 1. The width of the greenhouse is 6 meters and the length is 60 meters. A rectangular earthworm bed is made in the shed. The bed is arranged along one side of the plastic sheet of the greenhouse, and the nearest side of the bed is 1.5 meters away from the plastic root. The other side of the foundation bed is 3 meters away from the wall as a work pass. The earthworm bed is 15 centimeters thick, 1.5 meters wide, and 40 meters long; there is a 10-meter-long working area at both ends of the shed.

[0060] 2. It is standard to water for 3 consecutive days until the bed has water flowing out before the introduction;

[0061] 3. Test bed: Take earthworms and divide them into 12 piles at random, according to 5g / m 2 Sprinkle it into the bed to observe whether all the earthworms have entered the earthworm bed or whether there is any death phenomenon. If there is any abnormality, continue to water until the water flows out of th...

Embodiment 3

[0078] The method of cultivating earthworms in a greenhouse using domestic sludge as a bed base with cow dung, the steps are as follows:

[0079] 1. The width of the greenhouse is 8 meters and the length is 100 meters. Make two parallel four rectangular earthworm beds in the greenhouse. The two opposite beds form a group. The two groups of beds are arranged along the front and rear sides of the greenhouse. Open 10 meters wide for the work area. The nearest side of a group of beds close to the plastic sheet in the greenhouse is 1.2 meters away from the plastic root, and the nearest side of the other group of beds (away from the plastic sheet in the greenhouse) is 1.2 meters away from the wall, leaving a 3-meter-wide area between the two groups of beds. Homework passing. Each worm bed is 13 centimeters thick, 1.3 meters wide, and 70 meters long; there is a 10-meter-long working area at both ends of the shed.

[0080] 2. It is standard to water for 3 consecutive days until the ...

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Abstract

A method for breeding earthworm in greenhouse by using domestic sludge with cow dung as bed substrate is characterized in that performing earlier stage processing on sludge, manufacturing a earthworm foundation bed and performing introduction, performing observation for 1-2 days, and then testing a material; adding a sludge mixed material to the surface of the foundation bed every 8.5 or 11 days, wherein the amount of the sludge mixed material is 60-70 kg / m2 every time; spraying the foundation bed with a palatable conditioning solution once, and keeping the water content of an organic waste sludge mixture in the foundation bed being 70-80 wt%; performing harvesting when the density of the earthworm reaches 8-10 kg / m2; arranging the material after harvesting, and expanding the foundation bed when the height of the foundation bed is 35-40 cm; exposing a core of the original foundation bed after expanding of the foundation bed, and removing the core to a designated place to be stored; and resetting the original foundation bed, turning over the original foundation bed, allowing the density of the earthworm to decrease, and performing processing and production. The method can solve the problem that the biochemical sludge cannot be continuously processed by using earthworm due to cold weather, can improve the processing efficiency, increase the bed expanding speed, is conductive to long term domestication of the earthworm, and is suitable for earthworm industrialization large-scale biochemical sludge processing.

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 in a greenhouse using cow dung as a bed base and utilizing domestic sludge. Background technique [0002] Conventional treatment methods such as incineration and landfill of biochemical 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 gases 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K67/033
CPCA01K67/0332
Inventor 战卫民王兴王威周鑫
Owner LIAONING HUADIAN ENVIRONMENTAL PROTECTION TECH
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