Ionic type rare earth abandoned mining area soil remediation method

Abstract

The invention provides an ionic type rare earth abandoned mining area soil Cd pollution remediation method, and relates to the technical field of soil remediation. According to the ionic type rare earth abandoned mining area soil Cd pollution remediation method, the ionic type rare earth abandoned mining area soil is remedied through combination of abandoned rare earth tailing pioneer plants and indigenous fungi, and the ionic type rare earth abandoned mining area soil Cd pollution remediation method has the advantages that the plant remediation success rate is high, the effect is good, the technical process is simple and convenient, construction is easy, and the Cd content and the water and soil loss rate of the soil can be obviously reduced; and compared with similar methods, the ionic type rare earth abandoned mining area soil Cd pollution remediation method is low in cost, attractive, safe and easy to popularize and apply, and has huge application prospects and market requirements. According to the embodiment of the ionic type rare earth abandoned mining area soil Cd pollution remediation method, bacterial liquid of trichoderma and/or penicillium oxalicum is inoculated in the ionic rare earth abandoned mining area in the southern rainy region, the herbaceous or shrub plant seeds are dibbled, so that Cd in soil is obviously absorbed, the biomass of plants is improved, the ecological restoration effect of vegetation is good, and the ionic type rare earth abandoned mining area soil Cd pollution remediation method is suitable for rapid treatment of Cd pollution in rare earth tailing wasteland in the southern rainy region.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a soil remediation method in an ionic rare earth abandoned mine area. Background technique [0002] Ionic rare earths are national strategic resources, non-renewable, and are widely used in national defense construction and high-tech fields. Gannan, Jiangxi Province is rich in ionic rare earth resources, and is known as the "rare earth kingdom" in China. Ganzhou City, Jiangxi Province has 30% of the country's ionic rare earths, and is currently attracting attention at home and abroad. Mining of rare earths in southern Jiangxi began in the 1970s and 1980s, and roughly experienced three mining processes: pool leaching, heap leaching, and in-situ leaching. Rare earth mining has created a series of ecological and environmental problems such as vegetation and land resource destruction, water and soil pollution, etc. while creating high returns. Especially since ...

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Problems solved by technology

However, the above-mentioned rare earth mine restoration technology only uses microorganisms and plants, and does not consider the soil restoration technology of waste rare earth tailings sand matrix, which needs to solve the problems of water and soil loss, soil property restoration and Cd removal at the same time. There are few technical studies on regional governance

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