A method and device for the treatment of modular mine wastewater by a full-membrane method in underground coal mines

Abstract

The invention relates to a coal mine underground full-membrane method modular mine wastewater treatment method and device, which includes an underground coal mine full-membrane method modular mine wastewater treatment method and a coal mine underground full-membrane method used for the above water purification method Modular mine wastewater treatment device, the device includes, sequentially connected first water pump, cyclone solid-liquid separator, first water production pool, second water pump, swirl mixer, cyclone clarifier, second production Pool, ultrafiltration circulation pump, ultrafiltration separation device, third water production tank, nanofiltration water inlet pump, nanofiltration membrane device, fourth water production tank, reverse osmosis water inlet pump, reverse osmosis separation device and final water tank; the whole device of the present invention The structure is simple, and the entire device is precisely controlled according to environmental factors, which is convenient for installation in the mine. The purified water meets the water requirements of the mine, and solves the problem of a large amount of energy consumed by the traditional ground water purification device to lift the mine wastewater to the ground for treatment. .

Description

technical field [0001] The field of the invention is the field of waste water purification, in particular to a coal mine underground full-membrane method modular mine waste water treatment method and device. Background technique [0002] my country is the country with the largest coal output and the largest number of mines in the world, and the discharge of mine water also ranks first in the world. At present, the conventional mine water treatment process in my country is "coagulation-sedimentation-filtration-disinfection": the reaction tank is mainly perforated swirl or partition reaction tank, the sedimentation tank is mainly inclined pipe, and the filter tank is generally a valveless filter. Pools are disinfected with sodium hypochlorite or chlorine dioxide. These structures are generally large and are only suitable for surface treatment of mine water. However, in the treatment process of this conventional process, the amount of coagulant is large, the reaction time is l...

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Problems solved by technology

[0004] 1. Generally, the depth of mines is about 600-1000 meters, and the energy consumption required to raise a large amount of underground wastewater is huge. For example, to raise 150m³ / h water to 600 meters, a water pump of about 350kW is required

The waste water contains a large amount of suspended solids and cinders and other impurities, which will also cause frequent system failures.

The comprehensive calculation of the cost of raising the well is very huge, and it is prone to failure, which affects production

[0005] 2. The device is not precisely controlled according to the environmental parameters to eliminate the influence of environmental factors

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