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Production method of barium salt scallop shell powder used for soil remediation and fertility increasing

A scallop shell powder and soil remediation technology, which is applied in the field of soil remediation and soil improvement, can solve the problems of failure to achieve soil remediation and improvement effects, poor affinity of scallop shell powder, and damage to the soil microbial layer. Air permeability, the effect of enhancing soil fertility

Active Publication Date: 2019-03-15
陕西绿润环境工程研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the scallop shell powder currently on the market has problems such as calcination temperature and production process problems, which lead to problems such as poor affinity between scallop shell powder and soil, soil hardening, damage to soil properties, and damage to the soil microbial layer, which cannot achieve soil restoration and improvement effects.

Method used

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  • Production method of barium salt scallop shell powder used for soil remediation and fertility increasing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The embodiment of the present invention provides a production method of barium salt scallop shell powder used for soil restoration and fertilization, which relies on reaction equipment, and the reaction equipment includes a first measuring hopper 1, a first screw conveyor 2, Washing machine 3, second measuring bucket 4, second screw conveyor 5, first belt conveyor 6, dryer 7, second belt conveyor 8, third measuring bucket 9, third screw conveyor 10 , heating machine 11, fourth screw conveyor 12, third belt conveyor 13 and dust collection chamber 14, sixth screw conveyor 20, box conveyor 21 and product hopper 22;

[0024] The discharge port of the first measuring hopper 1 is set correspondingly to the feeding place of the first screw conveyor 2, and the discharge place of the first screw conveyor 2 is set correspondingly to the feeding port of the washing machine 3 , the discharge port of the cleaning machine 3 is set correspondingly to the feed port of the second measur...

Embodiment 2

[0034] The reaction equipment that embodiment 2 relies on is the same as embodiment 1, and embodiment 2 is the same as step 1) and step 2) of embodiment 1, the difference is that in step 3), the semi-finished scallop shell of storage is passed by the third screw The conveyor 10 transports the scallop shells to the heating machine 11, calcining and heating the scallop shells at 700° C., and the calcined and heated scallop shells are left for 6 hours to cool down to room temperature.

[0035] The content of alkali in the shell powder produced in Example 2 is 52%, the content of calcium acid is 88%, and the pH value is 8.

Embodiment 3

[0037] The reaction equipment that embodiment 3 relies on is the same as embodiment 1, and embodiment 3 is the same as step 1) and step 2) of embodiment 1, the difference is that in step 3), the semi-finished scallop shell of storage is passed by the third spiral The conveyor 10 transports the scallop shells to the heating machine 11 , calcines and heats the scallop shells at 900° C., and leaves the calcined and heated scallop shells for 12 hours to cool down to normal temperature.

[0038] The content of alkali in the shell powder produced in Example 3 is 55%, the content of calcium acidified is 95%, and the pH value is 10.

[0039] The barium salt scallop shell powder for soil remediation and fertilization prepared by the above-mentioned embodiment 1, embodiment 2 and embodiment 3 of the present invention has the following advantages:

[0040] The shell powder produced by the invention is mixed with soil, which can seal the heavy metals in the soil, neutralize the acidity an...

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Abstract

The invention discloses a barium salt technology used for soil remediation and fertility increasing, and relates to the technical field of soil remediation and soil modification. The production process is simple, the molecular structure of calcium is not damaged through special temperature calcine on natural shells, a certain amount of scallop shell powder is stirred into soil, heavy metals in the soil are sealed, acid-base property of the soil is neutralized, so that the soil can effectively absorb the abundant microelements and good mineral substances in the scallop shell powder, the soil is softened, crops do not absorb harmful heavy metals, better growth of the crops is facilitated, and the soil remediation and modification effects are achieved.

Description

technical field [0001] The invention relates to the technical field of soil remediation and soil improvement, in particular to a production method of barium salt scallop shell powder used for soil remediation and fertilization. Background technique [0002] With the development of my country's industrialization, a good ecological environment has increasingly become a scarce resource. 16% of the country's soil is polluted by harmful substances exceeding the permitted standards, of which 83% are inorganic harmful substances and 17% are organic harmful substances. 7% of the land polluted by inorganic harmful substances is cadmium, 4.8% is nickel, 2.7% is arsenic, 2.1% copper, and 1.6% is mercury. Of the land polluted by organic harmful substances, 1.9% were DDT and 1.4% were polycyclic aromatic hydrocarbons. As far as cultivated soil is concerned, 19.4% of it is polluted by pollutants with excessive concentrations. Heavy metal pollution is the main pollution problem of soil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00
CPCB02C21/00
Inventor 谢婉丽梁英英
Owner 陕西绿润环境工程研究院有限公司
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