A construction method for reclamation of industrial and mining abandoned land

Abstract

The invention relates to the field of soil remediation, and provides a reclamation construction method for a desert land of an industrial mining area aiming at the problem that an existing electric remediation range is limited. The invention has the technical scheme that the reclamation construction method for the desert land of the industrial mining area comprises the following steps of (1) inserting a plurality of conveying pipes into the desert land of the industrial mining area, wherein electrodes are arranged on parts, inserted into soil, of the conveying pipes, and the conveying pipes are connected with positive and negative poles of direct voltage so as to form an anode pipe and a cathode pipe; (2) plating heavy metal hyperaccumulators on a soil surface; (3) electrifying the electrodes, wherein the anode pipe is connected with a positive pole of a power supply, the cathode pipe is connected with a negative pole of the power supply, and a potential gradient between the anode pipe and the cathode pipe is 0.5 to 4.5V / cm; and (4) applying a fertilizer into the soil through the conveying pipes. The electrodes are carried into the deep soil through the conveying pipes, so that the bonding of electrokinetic remediation of deep soil and phytoremediation of the surface soil is realized, a remediation effect is good, and the cost is low.

Description

technical field [0001] The invention relates to the field of land restoration, more specifically, it relates to a construction method for reclamation of abandoned industrial and mining land. Background technique [0002] Mineral resources are the material basis for sustainable social and economic development. The mining and utilization of mineral resources have played a supporting role in my country's economic construction and social development. The development of mineral resources has left a lot of damaged land while supporting various production and construction in our country, which has aggravated the contradiction between man and land and seriously damaged the ecological environment. [0003] The emergence and existence of industrial and mining wasteland restricts the sustainable development of the region and endangers the regional ecological security. The consequences not only accompany the entire mining process, but will continue to exist after the mining area is deve...

AI Technical Summary

Problems solved by technology

[0005] However, electrodynamic restoration needs to insert the cathode and anode into the soil, but the longer the cathode and anode are inserted into the soil, the higher the construction cost will be. If the length is limited, the deep soil will not be able to achieve the restoration effect. Therefore, still room for improvement

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