Preparation method and application of porous ceramic ball soil remediation agent capable of eliminating heavy metal pollution in dry land

A technology of soil remediation agent and porous ceramic ball, which is applied in the field of soil science and agricultural chemistry, can solve the problems of difficult biological residue treatment, secondary pollution, high cost, etc., and achieve resource-based harmless treatment and low manufacturing cost , good practical effect

Active Publication Date: 2017-01-11
臣功环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bioremediation method is time-consuming and costly, and it is difficult to deal with toxic biological residues
Physical treatment requires special instr...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Biomass raw material preparation: Air-dried pine wood chips were crushed and sieved to obtain pine wood chips powder passed through a 200-mesh sieve for later use.

[0032] (2) Bone meal preparation: The bovine bones left over from the processing of healthy beef cattle were crushed and sieved to obtain 100-mesh bone meal for later use.

[0033] (3) Steel rust powder preparation: collect waste building steel bars, allow them to oxidize naturally, collect their rust fallout, crush them, and pass through a 100-mesh sieve for later use.

[0034] (4) Flux preparation Collect waste white soda-lime glass jars, crush them with an ore crusher, pass through a 100-mesh sieve, and set aside.

[0035] (5) Preparation of porous ceramic ball soil remediation agent embryo body

[0036] Take 100 parts of red clay fine powder that has been air-dried and crushed through a 100-mesh sieve, 15 parts of wood dust powder passed through a 100-mesh sieve in step 1, 20 parts of bone meal in ...

Embodiment 2

[0039] Example 2. Remediation of cadmium-contaminated drylands.

[0040] This example plot heavy metal Cd 2+ The content reaches 20ppm, which belongs to the situation of serious pollution. Evenly apply 2000kg of the porous ceramic ball soil remediation agent of embodiment 1 per mu, and make the porous ceramic ball soil remediation agent evenly in the 30 cm deep cultivation layer by conventional tillage measures such as plow and rake. distribution, constantly interacting with the heavy metal ions Cd adsorbed on the clay minerals in the plow layer 2+ Ion exchange occurs, releasing Na which is easily soluble in water + , Ca 2+ ions, while Cd 2+ The ions combine with the active phosphate in the pores of the porous ceramic ball soil remediation agent to form an insoluble phosphate form, which is inert and fixed in the porous ceramic ball soil remediation agent. After 3 years of continuous cultivation process, the porous ceramic ball soil remediation agent was replaced by heavy...

Embodiment 3

[0042] (1) Biomass raw material preparation: Air-dry poplar wood chips and sieve to obtain poplar wood chips powder with a 150-mesh sieve for later use.

[0043] (2) Bone meal preparation: The remaining bones from healthy pigs were crushed and sieved to obtain 80-mesh bone meal for later use.

[0044] (3) Preparation of iron and steel rust powder: collect waste angle iron and allow it to oxidize naturally, collect its rust fallout, crush it, and pass it through an 80-mesh sieve for later use.

[0045] (4) Flux preparation Collect waste soda-lime glass beer bottles, crush them with an ore crusher, pass through an 80-mesh screen, and set aside.

[0046] (5) Preparation of porous ceramic ball soil remediation agent embryo body.

[0047] Take 100 parts of red clay fine powder that has been air-dried and crushed through a 120-mesh sieve, 20 parts of poplar wood chip powder passed through a 150-mesh sieve in step 1, 18 parts of bone meal in step 2, 12 parts of rust powder in step 3...

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PUM

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Abstract

The invention provides a preparation method and application of a porous ceramic ball soil remediation agent capable of eliminating heavy metal pollution in dry land. The preparation method comprises the following steps: preparing a biomass material, bone meal, rust powder, a fluxing agent and fine red clay powder; uniformly mixing 100 parts by mass of the fine red clay powder, 15-30 parts by mass of wood chip powder, 20-35 parts by mass of the bone meal, 8-10 parts by mass of the rust powder, 10-20 parts by mass of the fluxing agent and 90-150 parts by mass of clear water, preparing an embryo, and drying the embryo in the shade till the water content of the embryo reaches 12-16%; and then performing continuous sintering in an electrical furnace at 800-1200 DEG C for 60 min, so as to obtain the porous ceramic ball soil remediation agent. According to the application, 750-2000 kg of the above porous ceramic ball soil remediation agent is uniformly applied to the dry land per mu; through a plow harrow and other conventional cultivation measures, the porous ceramic ball soil remediation agent can be uniformly distributed in a cultivation layer; and 3-5 years later, the residual body of the porous ceramic ball soil remediation agent can be removed by adopting electromagnetic adsorption. The preparation method provided by the invention turns waste into treasure, turns harm into good, and is practicable.

Description

technical field [0001] The invention belongs to the technical fields of soil science and agricultural chemistry. The invention relates to a preparation method and application of a porous ceramic ball soil restoration agent for removing heavy metal pollution in dry land. Background technique [0002] In the past 50 years, about 22,000 tons of Cr, 22,000 tons of Cd, 940,000 tons of Cu, 780,000 tons of Pb and 1.35 million tons of Zn were discharged into the global environment, most of which entered the soil, causing Soil heavy metal pollution. In the past 100 years, about 200,000 tons of Hg were released into the atmosphere, and there are still about 3,500 tons of Hg remaining in the atmosphere. At present, 1,900 to 2,200 tons of Hg are emitted into the atmosphere by human-made pollution sources around the world, of which coal burning and waste incineration emit Mercury accounts for 70%. Other sources of emission are gold smelting, non-ferrous metal smelting, cement producti...

Claims

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Application Information

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IPC IPC(8): B28B1/00B28B11/24B09C1/08
CPCB09C1/08B09C2101/00B28B1/008B28B11/243
Inventor 刘玉环艾力王允圃阮榕生张斌郑洪立巫小丹
Owner 臣功环境科技有限公司
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