Passivation remediation method for uranium-cadmium composite contaminated soil

A compound pollution and soil passivation technology, which is applied in the fields of uranium and cadmium compound polluted soil and soil remediation, can solve the problems of soil pollution, grain production reduction, economic loss, etc., and achieve reduced economic loss, high practical value, guaranteed use value and farmers the economic effect of

Pending Publication Date: 2020-03-13
SOUTHWEAT UNIV OF SCI & TECH +1
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Problems solved by technology

Furthermore, the pollution of heavy metals to the soil will lead to a

Method used

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  • Passivation remediation method for uranium-cadmium composite contaminated soil
  • Passivation remediation method for uranium-cadmium composite contaminated soil
  • Passivation remediation method for uranium-cadmium composite contaminated soil

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[0035] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0036] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0037] (1) embodiment measurement

[0038] 1 Materials and methods

[0039] 1.1 Test soil

[0040] The soil was taken from the campus experiment field of Southwest University of Science and Technology. After picking out plant residues and stones, they were air-dried in a cool place and ground through a 1mm sieve. A certain amount of CdCl 2 with UO 2 (CH 3 COO) 2 ·H 2 O was dissolved in deionized aqueous solution, stirred continuously to make it fully mixed, placed in a 20°C incubator to contin...

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Abstract

The invention discloses a passivation remediation method for uranium-cadmium composite contaminated soil, and belongs to the field of soil remediation. The method realizes effective remediation of thecadmium-uranium composite contaminated soil, and has the advantage of good remediation effect. The method comprises the steps of charcoal preparation and soil remediation. Agricultural wastes are used as a raw material, the method has the advantages of simplicity, convenience in operation, low cost, meeting of large-scale remediation requirements of the uranium-cadmium composite contaminated soil, effectiveness in soil improvement, high application values and good application prospect. The method can further realize in-situ passivation, is simple and quick, makes the soil continuously utilized after being repaired, effectively ensures the utilization values of the soil and the economic benefits of farmers, and reduces the economic loss caused by plowing-stopping remediation. An application of the remediation method, especially an application of planting leaf vegetables in the remediated soil, is also protected in the invention. The method can significantly reduce the content of uranium and cadmium in the leaf vegetables, and has high practical values.

Description

technical field [0001] The invention relates to the field of soil remediation, in particular to the field of uranium-cadmium compound polluted soil, in particular to a passivation repair method for uranium-cadmium compound polluted soil. Background technique [0002] Soil is an important part of the ecosystem and the material basis for the survival of living things. However, in the past half century, due to human activities such as industrial waste water, agricultural fertilizer discharge and continuous development of mineral resources, a large amount of pollutants containing heavy metals have been produced, which has seriously polluted the environment. The types and quantities of heavy metal pollutants in soil continue to increase, which seriously damages the ecological balance and threatens human health. [0003] Heavy metals in the environment mainly come from human activities, such as mining, smelting, electroplating and the vigorous development of the leather industry,...

Claims

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Application Information

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IPC IPC(8): B09C1/08B09C1/10
CPCB09C1/08B09C1/105B09C2101/00
Inventor 陈晓明商冉戚鑫王丹勾家磊韩梦薇卓弛夫罗学刚
Owner SOUTHWEAT UNIV OF SCI & TECH
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