A kind of phosphogypsum soil conditioner and preparation method thereof

A technology of soil improver and phosphogypsum, which is applied in soil conditioning materials, chemical instruments and methods, restoration of polluted soil, etc., and can solve problems such as difficult to achieve the pre-set effect, weak heavy metal processing capacity, and single reactant situation , to achieve the effect of reducing heavy metal ions, rich in mineral content, and reducing dissolution

Active Publication Date: 2022-05-31
贵州星硕铭越环保科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the current technology, the removal process of heavy metals using phosphogypsum is relatively simple, which is basically physical adsorption, but the physical adsorption itself will be released again, which is unstable; chemical precipitation is also a relatively common treatment method at present, but the final reactant situation is single. When changing, heavy metals will be released in different forms, resulting in weak processing capacity of heavy metals in the use of phosphogypsum, and it is difficult to achieve the pre-set effect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of phosphogypsum soil conditioner and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A phosphogypsum soil conditioner is prepared from the following raw materials: phosphogypsum treated with active microorganisms is used as a carrier, and modified activated carbon and an adsorbent are added to prepare; the mass of the phosphogypsum accounts for 40% of the total quality of the modifier The mass ratio of the modified activated carbon and the phosphogypsum is 1:3; the remainder is an adsorbent; the phosphogypsum treated by the active microorganism is obtained by mixing and soaking the methane bacteria fermentation liquid and the phosphogypsum according to a mass ratio of 1:0.3 , the methane bacteria fermentation broth is biogas slurry;

[0022] The preparation method of the active microorganism-treated phosphogypsum is as follows: the phosphogypsum is processed into powder with a fineness of 30 meshes, heated to 30° C., mixed with biogas slurry and soaked for 3 hours; after filtration, the biogas slurry is poured into a fermentation tank for fermentation, a...

Embodiment 2

[0026] A phosphogypsum soil conditioner is prepared from the following raw materials: phosphogypsum treated with active microorganisms is used as a carrier, and modified activated carbon and an adsorbent are added to prepare; the mass of the phosphogypsum accounts for 60% of the total mass of the modifier The mass ratio of the modified activated carbon and phosphogypsum is 1:5; the remainder is an adsorbent; the phosphogypsum treated by the active microorganism is obtained by mixing and soaking methane bacteria fermentation liquid and phosphogypsum according to a mass ratio of 1:0.4 , the methane bacteria fermentation broth is biogas slurry;

[0027] The preparation method of the phosphogypsum treated with active microorganisms is as follows: the phosphogypsum is processed into powder with a fineness of 50 meshes, heated to 35° C., mixed with biogas slurry and soaked for 5 hours; after filtration, the biogas slurry is poured into a fermentation tank for fermentation, and the pr...

Embodiment 3

[0031] A phosphogypsum soil conditioner is prepared from the following raw materials: the phosphogypsum treated with active microorganisms is used as a carrier, and modified activated carbon and an adsorbent are added to prepare; the mass of the phosphogypsum accounts for 57% of the total quality of the modifier. The mass ratio of the modified activated carbon and the phosphogypsum is 1:4; the remainder is an adsorbent; the phosphogypsum treated by the active microorganism is obtained by mixing and soaking the methane bacteria fermentation liquid and the phosphogypsum according to a mass ratio of 1:0.34. , the methane bacteria fermentation broth is biogas slurry;

[0032] The preparation method of the phosphogypsum treated with active microorganisms is as follows: the phosphogypsum is processed into powder with a fineness of 40 meshes, heated to 33° C., mixed with biogas slurry and soaked for 4 hours; after filtration, the biogas slurry is poured into a fermentation tank for fe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a phosphogypsum soil improver and a preparation method thereof, which are used for improving soil polluted by heavy metals and belong to the field of soil improvers. The phosphogypsum soil improver is prepared from the following raw materials: phosphogypsum treated with active microorganisms is used as a carrier, and modified activated carbon and adsorbent are added; the quality of the phosphogypsum accounts for 40-60% of the total quality of the improver %; the mass ratio of the modified activated carbon to phosphogypsum is 1:3-5; the balance is an adsorbent; the soil improver of the present invention is rich in mineral content and has a variety of fermentation active substances, which can significantly improve the microbial activity in the soil. The activity further improves the phosphatase activity, which improves the repair ability of the soil, forms the elastic mechanism of the soil for heavy metal deposition, and significantly improves the treatment effect on heavy metal-contaminated soil.

Description

technical field [0001] A phosphogypsum soil conditioner and a preparation method thereof are used for improving heavy metal-contaminated soil, and belong to the field of soil conditioners. Background technique [0002] Phosphogypsum is a by-product of the production of wet-process phosphoric acid, which is one of the largest solid wastes emitted by the chemical industry. my country's phosphogypsum resources and phosphogypsum production and emissions have typical regional characteristics, with more than 90% concentrated in Yunnan, Guizhou, Sichuan and Hubei provinces. In order to ensure the needs of agricultural production, my country needs to consume a large amount of phosphate fertilizer every year, and the production of one ton (P2O5 100%) of high-concentration phosphate fertilizer can produce about 5-6 tons of phosphogypsum. Phosphogypsum is about 75 million tons, and the overall utilization rate of phosphogypsum is 36.0%. The current stockpile of phosphogypsum in my cou...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40B09C1/08B09C1/10C09K109/00
CPCC09K17/40B09C1/08B09C1/10B09C1/105C09K2109/00B09C2101/00Y02W30/40
Inventor 张水涂汉肖艳桐张龙叶杨连
Owner 贵州星硕铭越环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap