Lead-zinc mine tailings pond and adjacent soil composite heavy metal pollution repairing system

A technology of pollution remediation and soil remediation agent, applied in the field of lead-zinc mine tailings pond and adjacent soil composite heavy metal pollution remediation system, can solve the problems of inability to deeply treat soil, damage to soil ecological environment, and high processing cost, and achieve the elimination of hardening. phenomenon, reducing re-leaching, and improving the effect of pellet structure

Inactive Publication Date: 2019-04-26
河北地质大学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: the restoration of soil heavy metals currently used is mostly through incineration treatment, heat treatment and bioreactor treatment, the treatment cost is high, and the soil cannot be thoroughly treated in depth, which is easy damage to the soil environment

Method used

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  • Lead-zinc mine tailings pond and adjacent soil composite heavy metal pollution repairing system
  • Lead-zinc mine tailings pond and adjacent soil composite heavy metal pollution repairing system
  • Lead-zinc mine tailings pond and adjacent soil composite heavy metal pollution repairing system

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preparation example Construction

[0062] In step S103, the steps of the general preparation method of the soil remediation agent provided by the embodiment of the present invention are as follows:

[0063] 1) Crushing the biomass with a grinder, passing through a 100-200 mesh sieve, exposing the obtained biomass powder to the sun, and using a reactor to uniformly mix the biomass powder and the microbial agent to obtain a mixture 1;

[0064] 2) uniformly mixing sulfoaluminate cement and silica fume to obtain mixture 2;

[0065] 3) After the mixtures 1 and 2 are fully mixed, the soil remediation agent of the present invention is obtained.

[0066] In step S103, the amount of the soil remediation agent provided by the embodiment of the present invention is 6%-10% of the mass of the soil, followed by spraying and watering, and the quality of water used for spraying and sprinkling is 70%-80% of the mass of the soil remediation agent.

[0067] The assay method that heavy metal exists in the beneficiation liquid tha...

Embodiment 1

[0095] The soil remediation agent provided by the embodiment of the present invention consists of 20 parts of sulfoaluminate cement, 10 parts of silica fume, 28 parts of biomass and 8 parts of microbial agent according to the mass parts.

Embodiment 2

[0097] The soil remediation agent provided by the embodiment of the present invention consists of 40 parts of sulfoaluminate cement, 20 parts of silica fume, 38 parts of biomass, and 16 parts of microbial agent according to the parts by mass.

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Abstract

The invention belongs to the technical field of pollution remediation, and discloses a lead-zinc mine tailings pond and adjacent soil composite heavy metal pollution repairing system. The lead-zinc mine tailings pond and adjacent soil composite heavy metal pollution repairing system comprises: a central control module, a heavy metal detection module, an organic fertilizer dosing module, a mixing module, a spray module, an earth turning module and a display module. The lead-zinc mine tailings pond and adjacent soil composite heavy metal pollution repairing system effectively reduces the contentof heavy metal elements in the soil, avoids re-recovery of the heavy metal elements in a traditional treatment method and severe harm to the environment and the life of people due to a certain damageto the soil environment. According to the lead-zinc mine tailings pond and adjacent soil composite heavy metal pollution repairing system, an inorganic curing agent sulphate aluminium cement is usedto quickly and efficiently fix heavy metal ions; reduction of the leaching concentration of the heavy metals is facilitated, and the heavy metal-polluted soil is improved; in addition, the soil aggregate structures are improved, and the hardening phenomenon is eliminated; moreover, re-leaching of the fixed heavy metals is reduced.

Description

technical field [0001] The invention belongs to the technical field of pollution remediation, and in particular relates to a remediation system for complex heavy metal pollution of lead-zinc ore tailings pond and adjacent soil. Background technique [0002] Mine refers to an independent production and operation unit that extracts ore with a certain mining boundary. Mine mainly includes one or more mining workshops (or pitheads, mine shafts, open pits, etc.) and some auxiliary workshops, and most mines also include ore dressing plants (coal washing plants). Mines include coal mines, metal mines, non-metal mines, building materials mines and chemical mines, etc. Mine scale (also known as production capacity) is usually expressed by annual output or daily output. Annual output refers to the amount of ore produced by a mine every year. According to the size of output, it is divided into three types: large, medium and small. The size of the mine should be compatible with the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08B09C1/10
CPCB09C1/08B09C1/10
Inventor 李冬付芳芳魏浩于延秋张敏杰
Owner 河北地质大学
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