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A Combined Restoration Method for Radioactively Contaminated Soil

A combined restoration and soil technology, applied in the field of soil restoration, can solve problems such as harm to human health, genetic effects, and damage to human internal organs, and achieve the effect of reducing radioactive pollutants of cesium and iodine, good application prospects, and satisfying the effects of restoration and governance

Active Publication Date: 2019-03-15
江苏山水国土资源开发工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, radioactive waste poses a great potential threat to the environment and public health. Compared with traditional pollutants, it is more difficult to deal with radioactive waste
If radioactive pollutants enter the soil, due to their slow migration speed, they are easily absorbed by crops and enter the food chain, causing damage to human internal organs and causing genetic effects, seriously endangering human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A combined restoration method for radioactively contaminated soil, comprising the following restoration steps:

[0023] Step 1. The soil to be repaired is repaired and covered with a greenhouse, and ozone is introduced into the greenhouse for pre-oxidation. The ozone concentration is 3g / m 3 , the pre-oxidation time is 1 hour;

[0024] Step 2, adding 1kg / mu composite additive, said composite additive includes by weight: 7 parts of nano-titanium dioxide, 6 parts of cerium oxide, 4 parts of molybdenum oxide, 3 parts of boric acid, 2 parts of silica gel, 6 parts of diatomaceous earth, molybdic acid Ammonium 3 parts, nano-manganese dioxide 4 parts, zinc oxide 6 parts, ferrous oxide 4 parts, then plow up and down, carry out 6W ultraviolet light irradiation, plow up and down once every other day, and the duration of ultraviolet light irradiation is 16 day, turn off the ultraviolet light, and place it at room temperature for 7 days;

[0025] Step 3, spray 0.03kg / mu of seed li...

Embodiment 2

[0028] A combined restoration method for radioactively contaminated soil, comprising the following restoration steps:

[0029] Step 1. The soil to be repaired is repaired and covered with a greenhouse, and ozone is introduced into the greenhouse for pre-oxidation. The ozone concentration is 10g / m 3 , the pre-oxidation time is 5 hours;

[0030] Step 2, adding 8kg / mu of composite additive, said composite additive includes by weight: 15 parts of nano-titanium dioxide, 10 parts of cerium oxide, 8 parts of molybdenum oxide, 6 parts of boric acid, 5 parts of silica gel, 11 parts of diatomaceous earth, molybdenum 7 parts of ammonium acid, 7 parts of nano-manganese dioxide, 12 parts of zinc oxide, and 8 parts of ferrous oxide, then plow up and down, carry out 15W ultraviolet light irradiation, and plow up and down once every 2 days, and the duration of ultraviolet light irradiation is After 16 days, turn off the ultraviolet light, and place it at room temperature for 15 days;

[003...

Embodiment 3

[0034] A combined restoration method for radioactively contaminated soil, comprising the following restoration steps:

[0035] Step 1. The soil to be repaired is repaired and covered with a greenhouse, and ozone is introduced into the greenhouse for pre-oxidation. The ozone concentration is 6g / m 3 , the pre-oxidation time is 3 hours;

[0036] Step 2, adding 4kg / mu composite additive, said composite additive includes by weight: 11 parts of nano-titanium dioxide, 8 parts of cerium oxide, 6 parts of molybdenum oxide, 5 parts of boric acid, 3 parts of silica gel, 8 parts of diatomaceous earth, molybdenum 5 parts of ammonium acid, 5 parts of nano manganese dioxide, 9 parts of zinc oxide, 6 parts of ferrous oxide, then plow up and down, carry out 10W ultraviolet light irradiation, plow up and down once every 1.5 days, and the duration of ultraviolet light irradiation is After 16 days, turn off the ultraviolet light, and place it at room temperature for 12 days;

[0037] Step 3, sp...

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PUM

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Abstract

The invention discloses a combined remediation method for radioactive contaminated soil. The combined remediation method comprises the following remediation steps: step 1, pre-oxidizing ozone; step 2, adding a composite additive which comprises nano titanium dioxide, cerium oxide, molybdenum oxide, boric acid, silica gel, diatomite, ammonium molybdate, nano manganese dioxide, zinc oxide and ferrous oxide, turning over, carrying out UV-irradiation, alternatively turning over once, shading ultraviolet light, and placing while ventilating at the room temperature; step 3, spraying a microbial strain liquid which comprises staphylococcus pasteuri, clostridium butyricum and cellulomonas flavigena, and controlling soil humidity and a soil temperature; and step 4, adding a compound fertilizer, turning over, planting clovers and pennisetum sinese seedlings, and harvesting the grown-up clovers and pennisetum sinese seedlings. The combined remediation method provided by the invention is good in remediation effect on cesium and iodine radioactive contaminated soil. Cesium and iodine radioactive contaminants of the remediated soil are greatly reduced, so that remediation and control on large-area radioactive contaminated soil can be met.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a combined remediation method for radioactively polluted soil. Background technique [0002] Environmental pollution has become a global problem. With the advancement of science and technology and the occurrence of natural disasters, people pay more and more attention to radioactive pollution. The radioactive source is a double-edged sword. The radioactive source can emit radiation with strong penetrating power. Although it has a wide range of applications, for example, it can irradiate human tumors and kill cancer cells in medicine; it can irradiate agricultural products and kill cancer cells in agriculture. Bacterial anti-corrosion; in the metal industry, it can be used to find defects in welded metals and conduct industrial flaw detection; level gauges, nuclear scales and other measuring instruments made of radioactive sources are less affected by environm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/08B09C1/10
CPCB09C1/08B09C1/105
Inventor 彭孝茹
Owner 江苏山水国土资源开发工程有限公司
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