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Method for improving biogas yield and producing composite function organic fertilizer

A compound function, organic fertilizer technology, applied in fertilization devices, fertilizer mixtures, biological sludge treatment, etc., can solve the problems of slow start of fermentation, low production efficiency, and low methane content.

Inactive Publication Date: 2014-07-02
JIANGXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are many problems in the actual promotion and application of biogas, such as: slow start of fermentation, low methane content, low production efficiency or even no gas production, etc. These problems restrict the promotion and popularization of biogas projects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Application of tourmaline powder material in pig manure biogas fermentation in rural households

[0021] This experiment takes the pig manure biogas digesters of individual farmers as an application example. Most of the farmer-type biogas digesters are single-stage biogas digesters, non-stirring, semi-dry mode, and belong to batch fermentation. The procedure of the single-stage biogas digester is that the tourmaline is crushed into 300nm-500μm, the straw is crushed into 5-10cm long straw, and the raw material is pig manure: straw 1: 3-5 (calculated according to the weight of solid matter) to form a mixture. Add 2kg of tourmaline powder to the cubic mixture, mix well, and then follow the basic process of biogas fermentation. The tourmaline composite material is an environmentally friendly material, and at the same time, it can produce a kind of mature biogas fertilizer that has been evenly compounded with tourmaline, which is a very good organic compound ferti...

Embodiment 2

[0022] Example 2: Application of Tourmaline Powder Material in Cow Dung Biogas Fermentation in Rural Houses

[0023] This experiment takes the cow dung biogas digesters of individual farmers as an application example. Most of the farmer-type cow dung biogas digesters are single-stage biogas digesters, non-stirring, semi-dry mode, and belong to batch fermentation. The procedure of the single-stage biogas digester is that the tourmaline is crushed into 300nm-500μm, the straw is crushed into 5-10cm long straw, and the raw material is cow dung: straw 1: 0.5-3 (calculated by solid weight) to form a mixture, and each Add 2kg of tourmaline powder to the cubic mixture, mix well, and then follow the basic process of biogas fermentation. The tourmaline composite material is an environmentally friendly material, and at the same time, it can produce a kind of mature biogas fertilizer that has been evenly compounded with tourmaline, which is a very good organic compound fertilizer with eco...

Embodiment 3

[0024] Example 3: Application of tourmaline powder material fermented in large and medium-sized pig manure biogas digesters

[0025] This experiment takes large and medium-sized pig manure biogas digesters as an application example. Most of the large and medium-sized pig manure biogas digesters are multi-stage biogas digesters, stirring or recoil type, and belong to continuous fermentation. The multi-stage biogas digester method can crush the tourmaline into 500μm-1mm, and the straw into 1-5cm long straw. Add 1kg of tourmaline powder to the material, mix it evenly and place it in the biogas digester, and then proceed according to the basic process of biogas fermentation. At the same time, it can produce a mature biogas fertilizer that has been evenly compounded with tourmaline, which is a very good organic compound fertilizer with ecological functions. Compared with the system without adding, the gas production rate increased by 45%, the methane content of biogas increased by...

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Abstract

The invention discloses a method for improving biogas yield and producing composite function organic fertilizer, comprises the following steps: (1) firstly crushing a tourmaline, wherein the grain size of the crushed tourmaline is 300nm-1mm; (2) uniformly mixing animal dung and straws in solid weight of 1: (0.5-5) to form a mixture, and adding 1-2kg of tourmaline in each cube of mixture, placing in a biogas digester after uniformly mixing, and then operating according to the basic procedure of the biogas fermentation, after fermenting, clearing the tourmaline biogas residue in the biogas digester to obtain the biogas residue / tourmaline composite function organic fertilizer disclosed by the invention. In comparison with the method of not adding the tourmaline, the system gas production rate of the method disclosed by the invention is increased by 20-50% after adding the tourmaline, the methane content of the biogas is improved by 15-405, the COD removal rate is improved by 8-18%, the aged biogas fertilizer is uniformly compounded with the tourmaline and an excellent ecological function organic composite fertilizer is prepared.

Description

technical field [0001] The invention relates to the technical field of ecological agricultural production, in particular to a method in which tourmaline is used to increase biogas yield and produce biogas residue / tourmaline composite functional organic fertilizer. Background technique [0002] Biogas is a clean and efficient high-quality energy, the main component is CH 4 , the use of biogas can not only solve the problem of farmers' living energy, relieve energy tension, but also use waste to reduce environmental pollution. With the vigorous promotion of the new rural energy ecological model and the rapid development of the aquaculture industry, the development of the biogas industry is in an unprecedented situation. Various super-sized biogas facilities have been greatly improved, especially the application of solar energy. Biogas production is possible. However, due to the different raw materials such as climate, crop straw, livestock and poultry manure, etc., the ingre...

Claims

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Application Information

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IPC IPC(8): C12P5/02C02F11/04C05G3/00
CPCY02E50/343Y02E50/30
Inventor 王平黄小华朱敏黄中兴黄中浩彭虎
Owner JIANGXI UNIV OF SCI & TECH
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