Heavy metal passivating agent, farmland purifying method and use thereof

A heavy metal passivator and passivator technology, applied in chemical instruments and methods, land preparation methods, applications, etc., can solve the problem that the method of purifying farmland does not provide any enlightenment and so on

Inactive Publication Date: 2014-07-30
黎虹
View PDF2 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above invention does not provide any enlightenment for the formula of passivating agent declared in this patent and the method for purifying farmland

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
  • Heavy metal passivating agent, farmland purifying method and use thereof
  • Heavy metal passivating agent, farmland purifying method and use thereof
  • Heavy metal passivating agent, farmland purifying method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The present embodiment provides a kind of heavy metal deactivator, and raw material is calculated by weight percentage, comprises:

[0042] High calcium fly ash 40%; Plant ash 20%; Calcined gypsum 8%; Fluorapatite 10%; Vermiculite 15%; Iron sulfate 5%; Magnesium sulfate 1%. The balance is impurities.

[0043] Utilize the method for purifying farmland soil heavy metal pollution by above-mentioned heavy metal deactivator, comprise the steps:

[0044] (1) Fragmentation of soil clumps

[0045] (11) Use artificial methods to remove large-grained stones, plastics, batteries, etc. on the soil surface, and perform field drying treatment, that is, prevent water from entering the farmland and expose to the sun to reduce soil moisture content and improve soil mass fragmentation and screening performance;

[0046] (12) After drying the fields, use excavators or bulldozers to break the surface 20-50cm of soil into mounds, so as to facilitate the fast and convenient implementation...

Embodiment 2

[0059] The present embodiment provides a kind of heavy metal deactivator, and raw material is calculated by weight percentage, comprises:

[0060] High calcium fly ash 50%; Plant ash 25%; Calcined gypsum 4%; Fluorapatite 5%; Vermiculite 8%; Iron sulfate 1%: Magnesium sulfate 4%. The balance is impurities.

[0061] Utilize the method for purifying farmland soil heavy metal pollution by above-mentioned heavy metal deactivator, comprise the steps:

[0062] (1) Fragmentation of soil clumps

[0063] (11) Use artificial methods to remove large-grained stones, plastics, batteries, etc. on the soil surface, and perform field drying treatment, that is, prevent water from entering the farmland and expose to the sun to reduce soil moisture content and improve soil mass fragmentation and screening performance;

[0064] (12) After drying the field, use excavators or bulldozers to break the surface 20-50cm of soil into mounds, so as to facilitate the fast and convenient implementation of...

Embodiment 3

[0077] The present embodiment provides a kind of heavy metal deactivator, and raw material is calculated by weight percentage, comprises:

[0078] High calcium fly ash 48%; Plant ash 23%; Calcined gypsum 6%; Fluorapatite 8%; Vermiculite 13%; Iron sulfate 0.5%; Magnesium sulfate 0.5%.

[0079] Utilize the method for purifying farmland soil heavy metal pollution by above-mentioned heavy metal deactivator, comprise the steps:

[0080] (1) Fragmentation of soil clumps

[0081] (11) Use artificial methods to remove large-grained stones, plastics, batteries, etc. on the soil surface, and perform field drying treatment, that is, prevent water from entering the farmland and expose to the sun to reduce soil moisture content and improve soil mass fragmentation and screening performance;

[0082] (12) After drying the fields, use excavators or bulldozers to break the surface 20-50cm of soil into mounds, so as to facilitate the fast and convenient implementation of solid waste screening...

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

PropertyMeasurementUnit
densityaaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The present invention provides a heavy metal passivating agent, and a farmland purifying method and a use thereof. The raw materials comprise, by weight, 40-50% of high calcium fly ash, 20-25% of plant ash, 4-8% of gypsum, 5-10% of fluorapatite, 8-15% of vermiculite, 0.5-5% of ferric sulfate, and 0.5-5% of magnesium sulfate. The purifying method comprises: (1) crushing soil lumps; (2) adding the heavy metal passivating agent; (3) plowing the soil; (4) adding water to age; and (5) balancing. According to the present invention, the heavy metal in the farmland soil is well removed.

Description

technical field [0001] The invention relates to the field of remediation of polluted soil, in particular to a heavy metal passivator and its method and application for purifying farmland. Background technique [0002] At present, the situation of soil pollution prevention and control in my country is very grim. The soil pollution is serious in some areas, and the types of soil pollution are diverse, showing the coexistence of new and old pollutants, and the situation of inorganic and organic compound pollution. There are many ways of soil pollution, complex reasons, and difficult control. Agricultural product safety and human health incidents caused by soil pollution occur from time to time, becoming an important factor affecting agricultural production, public health and social stability. [0003] Soil pollutants mainly come from atmospheric deposition, discharge of industrial wastewater and domestic sewage, application of pesticides, dumping of industrial solid waste and do...

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 Applications(China)
IPC IPC(8): C09K17/06A01B79/00B09C1/08
Inventor 黎虹
Owner 黎虹
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