Underground sewage closed-loop purification method

Abstract

An underground sewage closed-loop purification method comprises steps as follows: industrial water stored in a central water sump is conveyed to a pipeline through a central pump room and is conveyed to a mining area through the pipeline; the industrial water is used in the mining area to become working surface water, a part of the working surface water is sent to an emulsification pump hydraulic support after treated by a working surface reverse osmosis water treatment device and meeting the purified water standard, and the other part of the working surface water is used for mining area production, equipment cooling and roadway dust control. According to the underground sewage closed-loop purification method, underground sewage is recycled, mine production sewage emission and purchased water source cost are reduced, the sewage purification time is shortened, natural balance of surface water of the area is protected, pollutant emission is greatly reduced, secondary pollution to the environment due to sludge produced in an original surface water treatment process is effectively reduced, the environmental benefit is remarkable, the relationship between local governments and coal mining enterprises is improved, and sustainable and harmonious development of the mining area is promoted.

Description

technical field [0001] The invention designs a coal mine production process, in particular a closed-circuit purification method for underground sewage in a mine. Background technique [0002] Mine production sewage flows into the central water tank at the bottom of the mine through the alley ditches in each mining area. Due to the poor quality of the water entering the central water tank, it cannot be used for mine production water. All sewage is transported to the ground through the central drainage pump. However, the production water of the mine is supplied by Austrian ash water source wells and purchased tap water on the ground. The daily water consumption is very large. With the depletion of the Austrian ash water source, the funds for tap water purchases increase year by year, and the system operating costs and equipment maintenance costs are relatively high. However, all the production sewage generated in the mine is discharged to the ground, so that the drainage and s...

AI Technical Summary

Problems solved by technology

However, the production water of the mine uses the Austrian ash water source well and the tap water purchased from the ground, and the daily water consumption is very large. With the depletion of the Austrian ash water source, the funds for tap water purchases increase year by year, and the system operating costs and equipment maintenance costs are relatively high.

However, all the production sewage generated in the mine is discharged to the ground, so that the drainage and sewage costs remain high, and it takes time to clean the central water tank every year, which requires a lot of manpower, material and financial resources.

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