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Biogas residue organic fertilizer and preparation method thereof

A biogas residue organic fertilizer and biogas residue technology, which is applied in the direction of organic fertilizer, bio-organic part treatment, fertilization device, etc., can solve the problems of difficult biogas residue treatment, secondary pollution, waste of resources, etc., and achieve the improvement of fertilizer utilization rate and improvement Quality and the effect of improving corporate profits

Active Publication Date: 2010-07-14
INST OF SOIL & FERTILIZER SHANDONG ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention mainly aims at the problem of waste of resources and secondary pollution caused by biogas residues that are difficult to handle and consume, and uses biogas residues as the main raw material to develop a fertilizer making process from biogas residues

Method used

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  • Biogas residue organic fertilizer and preparation method thereof
  • Biogas residue organic fertilizer and preparation method thereof
  • Biogas residue organic fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1: special biogas residue organic fertilizer for wheat

[0051] Raw material component parts by weight are as follows:

[0052] Biogas residue (water content less than 30%) 92 parts; humic acid (organic matter > 50%) 4.5 parts; ammonium sulfate 1 part; potassium sulfate 1 part; monoammonium phosphate 1 part; manganese sulfate 0.2 part; zinc sulfate 0.2 part; boric acid 0.1 part.

[0053] The preparation steps are as follows:

[0054] 1. Pretreatment of biogas residue

[0055] The moisture content of the biogas residue in the biogas anaerobic fermentation tank is 86wt%, and it is pumped into the solid-liquid separator by a slurry pump, and the moisture content of the biogas residue after solid-liquid separation is 60%. The biogas residue after solid-liquid separation is sent to the solidification pond for air-drying and solidification. The depth of the solidification pond is 0.5 meters, and the curing time is 6 months, so that the moisture content of the bi...

Embodiment 2

[0062] Embodiment 2, special biogas residue organic fertilizer for wheat, raw material component weight parts are as follows:

[0063] Biogas residue (water content less than 30%) 90.8 parts; humic acid (organic matter > 50%) 5 parts; ammonium sulfate 1.5 parts; potassium sulfate 1 part; monoammonium phosphate 1 part; manganese sulfate 0.3 parts; zinc sulfate 0.3 parts; boric acid 0.1 part.

Embodiment 3

[0064] Embodiment 3, biogas residue organic fertilizer special for vegetables, raw material component weight parts are as follows:

[0065] Biogas residue (water content less than 30%) 85.25 parts; humic acid (organic matter > 50%) 10 parts; ammonium sulfate 2 parts; potassium sulfate 1 part; monoammonium phosphate 1 part; manganese sulfate 0.3 parts; zinc sulfate 0.25 parts; boric acid 0.2 parts.

[0066] Preparation method is as embodiment 1, and difference is:

[0067] 1. Pretreatment of biogas residue

[0068] The moisture content of the biogas residue in the biogas anaerobic fermentation tank is 90wt%, and it is pumped into the solid-liquid separator by a slurry pump, and the moisture content of the biogas residue after solid-liquid separation is 61wt%. The biogas residue after solid-liquid separation is sent to the solidification tank for air-drying and solidification. The depth of the solidification tank is 0.8 meters. When a special turning machine is used to regular...

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Abstract

The invention relates to a biogas residue organic fertilizer and a preparation method thereof. The biogas residue organic fertilizer uses biogas residue as major raw materials (the consumption is higher than 80 percent) to be mixed with humic acid, nitrogenous fertilizers, phosphate fertilizers, potash fertilizers and trace elements. By aiming at two problems that the biogas residue can not be dewatered and solidified easily and the mechanical dewatering has high energy consumption, the invention utilizes a shallow tank natural solidifying and air drying process, and the biogas residue carries out aerobic secondary fermentation, air drying and solidification in a shallow tank to meet the pelletization moisture and physical property requirements. The biogas residue organic fertilizer of the invention can meet the requirement of nutrient required by crop growth, and can also fertilize the soil and improve the yield.

Description

technical field [0001] The invention relates to a method for producing organic fertilizer by utilizing biogas residue, which belongs to the field of fertilizer. Background technique [0002] As one of the most effective ways to solve the pollution of livestock and poultry manure and crop straw, biogas technology has developed rapidly in recent years, and its potential environmental and economic benefits have been recognized by the society. However, there are few reports on the further processing of biogas slurry and biogas residues produced after anaerobic fermentation, so that they can be directly applied to crops as commodities. In addition, for large alcohol factories, monosodium glutamate factories and other enterprises, the output Disposal has also become a thorny issue. If these biogas slurry and biogas residues are discarded or used improperly, it will inevitably cause waste of resources and secondary pollution. Studies have found that biogas residues and biogas slu...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/02C05G3/04C05F5/00C05G3/60C05G3/80
CPCY02A40/20Y02E50/30Y02W30/40
Inventor 张玉凤董亮陈广思李军李彦刘兆辉张培苹
Owner INST OF SOIL & FERTILIZER SHANDONG ACAD OF AGRI SCI
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