Dewatering and safe stockpiling integrated system and method for industrial and mineral industry particulate solid waste

Abstract

The invention discloses a dewatering and safe stockpiling integrated system and method for industrial and mineral industry particulate solid waste. The dewatering and safe stockpiling integrated system comprises a front end transporting unit, a rear end transporting unit and a dewatering and stockpiling site. The rear end transporting unit comprises a mixing pipeline with the input end being connected to the front end transporting unit. The dewatering and stockpiling site comprises a water permeable rock-fill dam, a geotextile tube stockpiling body arranged on one side of the water permeable rock-fill dam and a leachate gathering tank arranged on the other side of the water permeable rock-fill dam. A plurality of geotextile tubes are stacked on the geotextile tube stockpiling body in a stack-up mode. Solid waste mud is transported to the geotextile tubes of the geotextile tube stockpiling body through the mixing pipeline, and a leachate guide discharging system is arranged at the bottom of the geotextile tube stockpiling body. According to the dewatering and safe stockpiling integrated system and method, the transporting and disposition cost of the solid waste is low, a large part of waste water can be recovered, the environmental influence is reduced, the stacking site for stacking the capsule-state solid waste is high in safety and stability, and the problems of safety risks such as stacking site side slope unstability, collapse, landslide and debris flow are not prone to occurring.

Description

technical field [0001] The invention relates to the field of safe and environment-friendly treatment of industrial and mining granular solid waste, in particular to an integrated system and method for dehydration and safe storage of industrial and mining granular solid waste. Background technique [0002] Industrial and mining granular solid waste refers to fine granular solid waste produced in mining, smelting, chemical industry, sewage treatment and other industrial and mining production, such as tailings, red mud, fly ash, phosphogypsum, lime slag Wait. [0003] At present, there are two main treatment methods for "industrial and mining granular solid waste" production enterprises: "wet discharge method" and "dry discharge method". [0004] (1) wet discharge method [0005] At present, the treatment of granular solid waste (such as tailings) in my country's industrial and mining industries mostly adopts the wet discharge method, and the traditional low-cost hydraulic tr...

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Problems solved by technology

[0017] 1) The dry discharge method can greatly reduce the transportation volume (only dry materials are transported), but in the case of non-long-distance and high-lift transportation between the factory and the disposal site, the dry materials are generally transported to the disposal site by belt conveyor or dump truck , the cost (requires secondary transshipment) is higher than that of the wet drainage hydraulic conveyance method

[0018] 2) The initial equipment (such as mechanical filtration equipment) of the dry discharge method has a relatively high investment and a long construction period

[0019] 3) The dry discharge method is not suitable for use in rainy areas such as southern my country. Under the action of a large amount of and long-term rainwater, the dry discharge pile is easy to fluidize the granular solid waste. After fluidization, its mechanical strength is very low, which is easy to cause piles. Safety risks such as site slope instability, collapse, landslides, and debris flows; and a large amount of solid waste will pollute downstream rivers and land with rainwater

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