Pig manure composting preparation method capable of reducing nitrogen loss

A technology of composting and pig manure, applied in the field of fertilizers, can solve the problems of controlling ammonia volatilization loss of pig manure composting, achieve significant economic and environmental benefits, convenient application, and reduce nitrogen loss

Inactive Publication Date: 2009-05-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods have certain limitations, and the problem of controlling the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Compost raw materials: 100kg of pig manure (moisture content 70%) from a large-scale pig farm in Hangzhou, 7kg of sawdust as filling material, 4kg of decomposed pig manure compost, 2kg of bamboo charcoal, and 200ml of bamboo vinegar.

[0012] Add the above-mentioned raw materials in proportion and mix them thoroughly, and adjust the moisture content to about 65%. In the experiment, a combination of static stack forced ventilation and manual forced turning was used to compost pig manure. Dimensions of the cement compost tank: length × width × height = 1.0m × 0.3m × 0.8m; place two PVC pipes with a diameter of 0.02m at the bottom of the tank, one end is sealed and the other end is connected to the blower. After uniformity, pile it on top of it, and cover it with straw to keep it warm for 49 days. Early stage (0d ~ 25d) ventilation volume 20m 3 / (h·t), ventilation three times a day, two hours each time. In the later period (26d-49d), manual turning is used, and the turn...

Embodiment 2

[0015] Compost raw materials: 100kg of pig manure (moisture content 72%) from a large-scale pig farm in Hangzhou, 6kg of sawdust, 3kg of straw, 5kg of decomposed pig manure compost, 3kg of bamboo charcoal, and 400ml of bamboo vinegar.

[0016] Add the above-mentioned raw materials in proportion and mix them thoroughly, and adjust the moisture content to about 65%. In the experiment, a combination of static stack forced ventilation and manual forced turning was used to compost pig manure. Dimensions of the cement compost tank: length × width × height = 1.0m × 0.3m × 0.8m; two PVC pipes with a diameter of 0.02m and holes in the pipe wall are placed at the bottom of the tank body, one end of the pipe is sealed and the other end is connected to the blower, and the filler and Pig manure is mixed according to a certain proportion and piled on top of it, covered with straw and kept warm for 42 days. Early stage (0d ~ 30d) ventilation volume 25m 3 / (h·t), ventilation three times a d...

Embodiment 3

[0019] Composting raw materials: 100kg of pig manure (moisture content 75%) from a large-scale pig farm in Hangzhou, 15kg of straw as filling material, 7kg of decomposed pig manure compost, 4kg of bamboo charcoal, and 600ml of bamboo vinegar.

[0020] Add the above-mentioned raw materials in proportion and mix them thoroughly, and adjust the moisture content to about 65%. In the experiment, a combination of static stack forced ventilation and manual forced turning was used to compost pig manure. Dimensions of the cement compost tank: length × width × height = 1.0m × 0.3m × 0.8m; two PVC pipes with a diameter of 0.02m and holes in the pipe wall are placed at the bottom of the tank, one end of the pipe is sealed and the other end is connected to the blower, and the composting raw materials are mixed After uniformity, pile it on it, and cover it with straw to keep it warm for 30 days. Early stage (0d ~ 20d) ventilation volume 30m 3 / (h·t), ventilation three times a day, two hou...

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Abstract

The invention relates to a pig manure compost preparation method capable of reducing the loss of nitrogen. The prior method fails to effectively solve and control the volatilization loss of ammonia of pig manure compost. The method controls the loss of the nitrogen during the composting of pig manure by adding bamboo charcoal and bamboo vinegar, and comprises the following concrete steps: the pig manure produced by a large-scale hoggery, a filling material, mature pig manure compost, bamboo charcoal particles, and the bamboo vinegar are mixed and placed into a composting trough, a static forced ventilation mode is adopted for composting treatment, and the compost is mature in 30 to 49 days, thereby obtaining a pig manure compost product. The filling material is saw powder or straws, and the bamboo vinegar is a bamboo vinegar stock solution. The method can reduce the loss of the nitrogen during the composting, improve the effect of the compost, and can be used for basic fertilizers or top dressing of various vegetables, melons and fruits and grain crops such as rice, wheat.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a method for preparing pig manure compost using bamboo charcoal and bamboo vinegar as combined nitrogen volatilization inhibitors. Background technique [0002] In recent years, the intensive pig farming industry in large and medium-sized cities in my country has developed rapidly, and the amount of pig manure produced has also increased. Since pig manure contains many volatile substances, pathogenic microorganisms, parasite eggs, antibiotics and heavy metals, pig manure has become one of the main causes of environmental pollution in my country, and the harmless treatment of pig manure is imperative. In addition, pig manure is also rich in nitrogen, phosphorus, potassium and other macroelements as well as various trace elements needed by plants. Its organic matter content is as high as 60% to 75%. Land use after pig manure composting is a recognized A treatment a...

Claims

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Application Information

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IPC IPC(8): C05F17/00
CPCY02W30/40
Inventor 陈英旭黄向东吴伟祥韩志英石德智
Owner ZHEJIANG UNIV
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