Method for preparing carbon-based organic fertilizer from waste biomass

A technology for discarding biomass and organic fertilizers, which is applied in the fields of organic fertilizers, chemical instruments and methods, fertilization devices, etc., can solve the problems of lack of synergy between carbonized straw and fertilizer, lack of functional groups, and high energy consumption.

Inactive Publication Date: 2018-06-22
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although it has been reported to produce biochar-based fertilizers through high-temperature carbonization of straw, etc., due to the high degree of crystallization of carbon elements and the lack of functional groups on the surface during high-temperature carbonization, the carbonized straw and fertilizer are simply mixed and lack synergy.
In addition, due to the high carbonization temperature (generally above 300°C) and the waste biomass contains a lot of water, the carbonization process consumes a lot of energy.

Method used

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  • Method for preparing carbon-based organic fertilizer from waste biomass
  • Method for preparing carbon-based organic fertilizer from waste biomass
  • Method for preparing carbon-based organic fertilizer from waste biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Material preparation

[0026] The pig manure was dried and crushed to less than 5mm, and set aside.

[0027] Preparation of carbon-based organic fertilizer

[0028] 1) Mix pig manure (dry basis), water, and quicklime in a ratio of 1:5:1 and put them into a hydrothermal reactor.

[0029] 2) Heating the reactor to 200°C and maintaining it for 60 minutes; cooling by an electric fan and internal circulating cooling water, and then performing solid-liquid separation to obtain hydrothermal charcoal;

[0030] 3) Hydrothermal charcoal and commercial organic fertilizer are mixed according to the ratio of 1:4, and after mechanical stirring for 15 minutes, the charcoal-based organic fertilizer (moisture content 41%, dry basis organic matter 66.2%, TN 1.96%, P 2 o 5 3.12%, K 2 O 2.94%).

[0031] 2. Fertilizer effect experiment design

[0032] Using plot experiment method, each plot is about 10m 2 , two treatments were set up in the experiment, and organic fertilizer and ...

Embodiment 2

[0043] 1. Use corn stalks instead of pig manure.

[0044] The hydrothermal condition in the preparation step of the carbon-based organic fertilizer is: 220° C. for 80 minutes. Hydrothermal charcoal and commercial organic fertilizer were mixed according to the ratio of 1:6, and after mechanical stirring for 15 minutes, the charcoal-based organic fertilizer (water heat content 44%, dry basis organic matter 68.2%, TN 1.83%, P 2 o 5 3.02%, K 2 O 3.09%).

[0045] 2. Peanuts (Fuhua 12) were used instead of rice in the fertilizer effect experiment design, and the planting density was 15 holes / m 2 , 3 plants per hole, sowed on May 28, 2016, and harvested on September 28. Apply organic fertilizer and carbon-based organic fertilizer respectively, the dosage is 3.5kg / m 2 . All organic fertilizers were used as base fertilizers, which were evenly sprinkled and then plowed. The rest of the management measures are the same.

[0046] 3. Fertilizer efficiency test method

[0047] Ana...

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Abstract

The invention provides a method suitable for preparing environment-friendly, low-consumption and high-efficiency carbon-based organic fertilizer from waste biomass as a raw material in combination with the current situations that the soil fertility in our country is reduced, the soil function is severely deteriorated, the amount of agricultural and forestry waste biomass (such as straw, livestockand poultry excrement and the like) is huge and pollution is serious. The method comprises the following steps: 1) the waste biomass is converted into hydrothermal carbon under specific hydrothermal conditions; 2) the hydrothermal carbon is reasonably compatible and fully mixed with organic fertilizer. The carbon-based organic fertilizer prepared from the waste biomass can effectively improve soiland increase crop yield, not only can improve the efficiency of the organic fertilizer, but also realizes high-efficiency recycling of the waste biomass. The carbon-based organic fertilizer preparedwith the method has the characteristics of being green, environmentally friendly, cheap and the like.

Description

technical field [0001] The invention relates to the treatment and disposal of waste biomass, which belongs to the new technology of resource utilization of solid waste in the field of environmental protection and comprehensive utilization of resources, and is especially suitable for a huge amount of waste biomass such as straw, livestock and poultry manure, kitchen waste, municipal sludge, etc. High value-added resource utilization. Background technique [0002] The "National Soil Pollution Survey Bulletin" shows that the quality of my country's soil resources is generally low, and 2 / 3 of the cultivated land belongs to low-to-medium yield fields. The problems shown in these medium and low-yield fields are firstly low soil fertility, nutrient deficiency, and serious degradation. In recent years, due to human and natural factors, the degradation of soil functions in my country has been very serious. Low soil fertility, nutrient deficiency, serious degradation, and intensifie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C09K17/06C09K101/00C09K109/00C05G3/80
CPCC09K17/06C09K2101/00C09K2109/00C05G3/80
Inventor 刘振刚焦文涛盖超
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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