A method for anti-leakage and sewage drainage of hydrometallurgical tailings silo

Abstract

The invention relates to a seepage-proof sewage discharging and floodwater draining method for a tailing reservoir in wet metallurgy. According to the seepage-proof sewage discharging and floodwater draining method, seepage-proof and corrosion-resistant structures including a seepage-proof supporting layer, a geomembrane seepage-proof layer, a composite seepage-proof membrane, a geotechnical cloth seepage-proof layer and a seepage-proof protective filter layer sequentially cover the bottom of the tailing reservoir in an laid mode, a seepage drain pipe is longitudinally pre-buried on the geotechnical cloth seepage-proof layer, a flexible permeable seepage collection pipe is transversely pre-buried on the geotechnical cloth seepage-proof layer, and the seepage drain pipe, the flexible permeable seepage collection pipe and a transverse intercepting ditch form a net-shaped seepage collection and discharge system. Two floodwater draining systems are arranged inside and outside the tailing reservoir, and a floodwater-draining blind ditch is formed in the tailing reservoir in an overflow mode. Sewage in the tailing reservoir is recycled. A side water-intercepting floodwater-draining ditch outside the tailing reservoir discharges rainwater (clear water) in a mountain discharging range to downstream natural rivers and ditches of the tailing reservoir. The seepage-proof sewage discharging and floodwater draining method for the tailing reservoir in the wet metallurgy can intercept the sewage seepage to prevent the sewage from polluting underground water and overcome the potential safety hazard that debris flow is caused by accumulated water in reservoir tailings, thereby protecting the environment, saving resources and being simple in process, easy to operate and implement and worth popularizing and using.

Description

technical field [0001] The invention relates to the technical field of a hydrometallurgical tailings anti-leakage sewage discharge and flood discharge method. Background technique [0002] At present, my country's hydrometallurgical enterprises pile up metallurgical tailings in open space, exposed to the sun and rain, and do not carry out anti-seepage treatment on the bottom of the tailings silo, that is, do not lay anti-seepage membranes, and the polluted slag silo water can be drained from Seepage at the bottom of the reservoir pollutes groundwater, and the tailings reservoir collection and drainage pipes are not laid in layers in the tailings reservoir, which may cause water accumulation in the tailings reservoir, and tailings will form debris flow, which will seriously affect the surrounding environment and the safety of the tailings reservoir. Caused the tailings dam to break and so on. Contents of the invention [0003] The invention aims at the fact that in the curre...

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Problems solved by technology

[0003] The invention aims at the fact that in the current hydrometallurgy industry, the metallurgical tailings are not subjected to anti-seepage treatment, and the tailings storage seepage drainage system is not laid in layers to drain the tailings storage. The tailings storage causes groundwater pollution and may cause tailings storage Dam-break debris flow and other disadvantages occur, providing a method to prevent leakage of tailings reservoir and discharge sewage and flood

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