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Organic liquid fertilizer based on concentrated biogas slurry as well as preparation and application methods thereof

A technology of organic liquid fertilizer and concentrated biogas, applied in the direction of organic fertilizer, application, inorganic fertilizer, etc., can solve the problems of secondary salinization, high price of water-soluble fertilizer, etc., achieve stability and fertilizer efficiency improvement, improve sustainable production capacity, The effect of simple production process

Inactive Publication Date: 2017-02-22
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the development of organic liquid fertilizers with anaerobic fermentation residues as the main raw material to solve the problems of high price of water-soluble fertilizers and local secondary salinization to meet the needs of water and fertilizer integration is the key to realize high-value utilization of anaerobic fermentation residues Effective Ways

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  • Organic liquid fertilizer based on concentrated biogas slurry as well as preparation and application methods thereof

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Effect test

Embodiment 1

[0044] like figure 1As shown, this embodiment provides a synthetic device used to prepare the organic liquid fertilizer, which is also a process flow for preparing the organic liquid fertilizer according to the present invention. In addition to the different volumes of No. 1 to No. 3 blending reactors in the synthetic device, The remaining related configurations (including feeding port, dispersing mixer 6, feeding valve 7, discharging valve 8, thick slurry pump 9, control box 10, scale liquid level gauge 11, etc.) are the same; The configuration is basically the same as that of No. 1 to No. 3 deployment reactors, the only difference is that the volume and function are different; moreover, the control boxes 10 of each of the above reactors are the same, and are used to control the thick slurry pump 9 and electric heating of each reactor configuration. The opening of the mixer and the dispersing mixer 6, as well as the setting of time and temperature; in addition, No. 1 to No. 3...

Embodiment 2

[0046] This embodiment provides a method for preparing organic liquid fertilizer using the device described in Embodiment 1, such as figure 1 As shown, it includes the following steps:

[0047] (1) Open the feed valve 7 of the No. 1 deployment reactor, start its thick slurry pump 9, add 1000 kg of concentrated biogas slurry with a solid content of 10%, and close the feed valve 7. Start its dispersing mixer 6, open the feeding port, drop in monoammonium phosphate (11-44-0) powder raw material 850kg (85% of concentrated biogas slurry), close the feeding port, and continue to disperse and mix. Start the electric heater to heat up the temperature, wait for the temperature of the material to rise to 60°C, and maintain the temperature to continue dispersing and mixing for 30 minutes, stop heating and dispersing and mixing, and obtain an organic basic liquid fertilizer solution with a grade of [5.1-20.2-0].

[0048] (2) Open the feed valve 7 of the No. 2 deployment reactor, start th...

Embodiment 3

[0054] This embodiment provides another method for preparing organic liquid fertilizer using the device described in Embodiment 1, such as figure 1 As shown, it includes the following steps:

[0055] (1) Open the feed valve 7 of the No. 1 deployment reactor, start the thick slurry pump 9, add 1000 kg of the concentrated biogas slurry with a solid content of 20%, and close the feed valve 7. Start the dispersing mixer 6, open the feeding port, put in 600 kg of diammonium phosphate (15-42-0) powder raw material (60% of the concentrated biogas slurry), close the feeding port, and continue to disperse and mix. Start the electric heater to heat up the temperature, wait for the temperature of the material to rise to 50°C, and maintain the temperature to continue dispersing and mixing for 15 minutes, stop heating and dispersing and mixing, and obtain an organic basic liquid fertilizer solution with a grade of [5.6-15.8-0].

[0056] (2) Open the feed valve 7 of the No. 2 deployment re...

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Abstract

The invention belongs to the field of organic waste resource recovery and fertilizer production and in particular relates to an organic liquid fertilizer based on concentrated biogas slurry as well as preparation and application methods thereof. The preparation method comprises the following steps: (1) preparing an organic basic liquid fertilizer liquid: carrying out dispersive mixing on concentrated biogas slurry and phosphate fertilizers, thus obtaining the organic basic liquid fertilizer liquid; (2) preparing an organic basic nitrogen fertilizer liquid: carrying out dispersive mixing on concentrated biogas slurry and nitrogen fertilizers, thus obtaining the organic basic nitrogen fertilizer liquid; (3) preparing an organic basic chelate / complex trace element fertilizer liquid: carrying out dispersive mixing on concentrated biogas slurry and trace element fertilizers, thus obtaining the organic basic chelate / complex trace element fertilizer liquid; (4) preparing an organic liquid fertilizer primary liquid: carrying out dispersive mixing on the three kinds of liquids and an organic polymer dispersing emulsifier, thus obtaining the organic liquid fertilizer primary liquid; (5) preparing the organic liquid fertilizer based on concentrated biogas slurry: carrying out filtration and centrifugal separation on the organic liquid fertilizer primary liquid, thus obtaining the organic liquid fertilizer. The preparation method has the effect of achieving resource utilization of anaerobic digestion liquids of large-scale biogas projects. The prepared organic liquid fertilizer is applied as a special fertilizer for drop irrigation, soaking of seeds, seed dressing, root irrigation or foliage spray.

Description

technical field [0001] The invention belongs to the fields of organic waste resource recycling and fertilizer production, and in particular relates to an organic liquid fertilizer based on concentrated biogas slurry and a preparation and application method thereof. Background technique [0002] The anaerobic fermentation residue is a mixture of biogas slurry and biogas residue, that is, anaerobic digestion solution. It is mainly composed of some undecomposed organic matter, microbial metabolites and new microbial cells. Its comprehensive utilization can not only avoid secondary pollution, but also bring good economic, ecological environment and social benefits. The annual anaerobic fermentation residue (biogas residue, biogas slurry) in China is about 385 million tons. How to ensure the sustainable development of the biomass gas project and the normal operation of the biogas project under construction, and solve the problem of the treatment and utilization of anaerobic diges...

Claims

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Application Information

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IPC IPC(8): C05G1/06
CPCC05B7/00C05G5/23C05C3/00C05C9/00C05D1/02C05D9/00C05D9/02C05F9/04
Inventor 王玉军
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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