Saline-alkali land soil conditioner based on coal-fired flue gas desulfurization gypsum and biogas waste and preparation method of saline-alkali land soil conditioner

A technology of soil improver and desulfurized gypsum, which is applied in the production field of the improver, can solve problems such as biogas residue treatment problems, achieve the effects of inhibiting adverse effects, facilitating salt leaching, and promoting crop growth

Inactive Publication Date: 2018-01-26
WEIFANG YOURONG IND
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AI Technical Summary

Problems solved by technology

[0004] With the development of society, the requirements for environmental protection are getting higher and higher, biogas technolo

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1: A saline soil conditioner based on coal-fired flue gas desulfurization gypsum and biogas waste, including the following components by weight: 30 parts of coal-fired flue gas desulfurization gypsum; 60 parts of biogas residue, 15 parts of plant straw powder; potassium sulfate 3 parts of type compound fertilizer.

[0019] In this embodiment, the length of the plant straw powder is not greater than 0.5 mm.

[0020] The preparation method of this embodiment is as follows: including the following steps:

[0021] (1) Raw material preparation: pulverize plant stalks, and the length of the plant stalk powder is not more than 0.5 mm;

[0022] (2) Raw material mixing: Put the coal-fired flue gas desulfurization gypsum, biogas residue, plant straw powder, and potassium sulfate type compound fertilizer into a mixer for mixing and mixing according to the ratio, so that the components are evenly mixed;

[0023] (3) Extrusion granulation: send the above-mentioned uniformly mixed raw...

Example Embodiment

[0026] Example 2: A saline soil conditioner based on coal-fired flue gas desulfurization gypsum and biogas waste, including the following components by weight: 40 parts of coal-fired flue gas desulfurization gypsum; 40 parts of biogas residue, 20 parts of plant straw powder; potassium sulfate 4 parts of type compound fertilizer.

[0027] In this embodiment, the length of the plant straw powder is not greater than 0.5 mm.

[0028] The preparation method of this embodiment is as follows: including the following steps:

[0029] (1) Raw material preparation: pulverize plant straws, and the length of the plant straw powder is not more than 0.5mm;

[0030] (2) Raw material mixing: Put the coal-fired flue gas desulfurization gypsum, biogas residue, plant straw powder, and potassium sulfate compound fertilizer into the mixer for mixing according to the ratio, so that the components are evenly mixed;

[0031] (3) Extrusion granulation: The above-mentioned uniformly mixed raw materials are sent ...

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Abstract

The invention discloses a saline-alkali land soil conditioner based on coal-fired flue gas desulfurization gypsum and biogas waste. The soil conditioner is prepared from components in parts by weightas follows: 20-40 parts of the coal-fired flue gas desulfurization gypsum, 40-80 parts of biogas residues, 10-20 parts of plant straw powder and 2-4 parts of potassium sulfate compound fertilizer. Ca<2+> and Mg<2+> in the coal-fired flue gas desulfurization gypsum replace total exchangeable sodium in the saline-alkali land, so that the content of the exchangeable sodium in the saline-alkali land is reduced; the biogas residues contain rich organic matter, humic acid, amino acid, nitrogen, phosphorus, potassium and microelements, and besides, the biogas residues serve as a binder of the conditioner; the plant straw powder is decomposed and converted by microorganisms into humus, the soil alkalinity is reduced, and the salt tolerance is improved; potassium sulfate compound fertilizer increases nutrients in soil and improve the salt tolerance of crops. The main raw materials of the soil conditioner are from industrial and agricultural wastes, the soil conditioner can be industrialized andconvenient to apply, and the conditioning efficiency of the saline-alkali land is improved.

Description

technical field [0001] The invention relates to a soil conditioner for saline-alkali land, and also relates to a production method of the conditioner. Background technique [0002] The area of ​​saline-alkali land in China is huge and has great potential for development and utilization. Among them, coastal saline-alkali land is an important type of saline-alkali land in my country, with a coastline of more than 18,000 kilometers and a relatively wide distribution. [0003] With the rapid development of my country's economy, electricity consumption is also increasing rapidly. Coal accounts for 75% of my country's primary energy consumption, of which coal-fired thermal power accounts for 1 / 3. In order to meet environmental protection requirements, thermal power plants adopt desulfurization technology on a large scale to achieve emission standards. The by-product of coal-fired flue gas desulfurization gypsum is about 10 million tons per year. Therefore, the amount of by-produ...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/80
Inventor 王胜
Owner WEIFANG YOURONG IND
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