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Soybean-field acidic soil conditioner and preparation method thereof

A technology of acidic soil and conditioner, applied in the direction of soil conditioning materials, chemical instruments and methods, and other chemical processes, which can solve environmental pollution and other problems

Active Publication Date: 2016-01-13
JIANGSU GOOD HARVEST WEIEN AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Glyphosate waste liquid contains a large amount of organic phosphorus and other organic substances, and direct discharge will cause serious environmental pollution

Method used

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  • Soybean-field acidic soil conditioner and preparation method thereof
  • Soybean-field acidic soil conditioner and preparation method thereof
  • Soybean-field acidic soil conditioner and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] Embodiment 1: the production of soybean field acidic soil conditioner

[0108] The implementation steps of this embodiment are as follows:

[0109] A. Preparation of phosphate-containing solids from glyphosate production waste liquid

[0110] (1) Precipitation of heavy metal ions

[0111] Let the glyphosate production waste liquid with pH 0.6 and pure hydrogen sulfide gas generated when glyphosate is produced by IDA method, the absorption tower sold by Suzhou Hongtuo Environmental Technology Co., Ltd. under the trade name HTV type vertical countercurrent packed tower Reacting in the medium for 5 hours under the conditions of temperature 5°C and pressure 0.1MPa, hydrogen sulfide reacts with heavy metal ions to form heavy metal sulfide precipitate, and separates to obtain a precipitate containing heavy metal sulfide and a precipitate mother liquor;

[0112] (2) Organophosphorus oxidation

[0113] Heat the precipitated mother liquor obtained in step (1) to a temperature...

Embodiment 2

[0128] Embodiment 2: the production of soybean field acidic soil conditioner

[0129] The implementation steps of this embodiment are as follows:

[0130] A. Preparation of phosphate-containing solids from glyphosate production waste liquid

[0131] (1) Precipitation of heavy metal ions

[0132] Let the glyphosate production waste liquid with pH 0.5 and pure hydrogen sulfide gas generated when glyphosate is produced by the IDA method be placed in the absorption tower sold by Yangzhou Hengtong Environmental Protection Technology Co., Ltd. under the trade name HLB type liquid absorption tower The reaction was carried out under the conditions of temperature 10°C and pressure 0.3MPa for 4 hours, hydrogen sulfide and heavy metal ions reacted to form a heavy metal sulfide precipitate, and a precipitate containing heavy metal sulfide and a precipitate mother liquor were obtained by separation;

[0133] (2) Organophosphorus oxidation

[0134] Heat the precipitated mother liquor obt...

Embodiment 3

[0149] Embodiment 3: the production of soybean field acidic soil conditioner

[0150] The implementation steps of this embodiment are as follows:

[0151] A. Preparation of phosphate-containing solids from glyphosate production waste liquid

[0152] (1) Precipitation of heavy metal ions

[0153] Let the glyphosate production waste liquid with pH 1.0 and pure hydrogen sulfide gas generated when glyphosate is produced by the IDA method be heated at a temperature of 20°C in an absorption tower sold by Suzhou Lisheng Chemical Equipment Co., Ltd. React with a pressure of 0.5 MPa for 3 hours, hydrogen sulfide and heavy metal ions react to form a heavy metal sulfide precipitate, and separate a precipitate containing heavy metal sulfide and a precipitate mother liquor;

[0154] (2) Oxidation of organic phosphorus

[0155] Heat the precipitated mother liquor obtained in step (1) to a temperature of 100° C., and then, under the condition of a pressure of 0.5 MPa, use an aerator sold ...

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Abstract

The invention relates to a soybean-field acidic soil conditioner and a preparation method thereof, and the method comprises preparing a phosphate-containing solid from a glyphosate waste liquid, preparing the soil conditioner, granulating, drying and the like. Compared with CK (contrast check), the acidic soil conditioner helps to improve soil pH of soybean filed by 0.51 unit, also, improve the soil available nitrogen content by 31.60%, and improve the soybean mu output by 8.02% compared with a contrast group, and is substantial in yield increasing effect. Resourceful sustainable utilization of glyphosate production production wastewater is realized, valuable phosphate rock resource is saved, also acidic soil pH is raised, soybean rhizosphere rhizobium quantity is recovered, and soil fertility is raised.

Description

【Technical field】 [0001] The invention belongs to the technical field of soil improvement. More specifically, the present invention relates to an acidic soil conditioner, and also relates to a preparation method of the soil conditioner. 【Background technique】 [0002] Northeast China is the main soybean producing area in my country, and the soybean planting area in Heilongjiang Province ranks first in the country all the year round, accounting for one-third of the national total. Soybean is a crop that requires a large amount of fertilizer. Its demand for nitrogen fertilizer is 4 to 5 times higher than that of cereal crops with the same yield, and its demand for phosphorus and potassium fertilizers is also higher than that of cereal crops. In addition, the phenomenon of soybean repeated cropping and cropping is relatively common in China. Taking northern Heilongjiang as an example, there are more than 3,000 mu of soybeans in this area as heavy cropping soybeans, most of wh...

Claims

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Application Information

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IPC IPC(8): C09K17/40C09K109/00
Inventor 蔡典雄李勇刘卫伟王新星刘小光
Owner JIANGSU GOOD HARVEST WEIEN AGROCHEM
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