Mine water-inrush treatment multiplex system and treating method thereof

Abstract

The invention discloses a mine water-inrush treatment multiplex system and a treating method thereof. The adopted technical scheme is that the mine water-inrush multiplex system comprises a pre-precipitation unit, a gob and an aeration oxidizing filtering unit, and mine inrush water is guided to flow through the pre-precipitation unit, the gob and the aeration oxidizing filtering unit sequentially. The system and the treating method have the advantages that the mine inrush water first passes through the pre-precipitation unit to remove a large amount of suspended matter with coal powder and rock waste as the main thing before entering the gob, thereby avoiding the fact that the font end of the gob has siltation and is blocked by the suspended matter and effectively prolonging serve life of the gob. Water from the gob enters the aeration oxidizing filtering unit, substances such as iron and manganese in the mine inrush water can be effectively removed, and outlet water quality can be ensured. The whole mine water-inrush treatment multiplex system is short in flow, less in power equipment and apt to achieve automation. The method is simple and convenient to achieve, low in cost, high in efficiency and good in water quality purification effect.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment and environmental protection, in particular to a mine water gushing treatment and reuse system and a corresponding water treatment method. Background technique [0002] Mine gushing water is a typical industrial wastewater with characteristics of coal mines. Since most of my country's coal mines are distributed in arid and semi-arid regions in the north and west, water resources are scarce. Therefore, mine gushing water can be used as coal mine production water after treatment, which can alleviate the water shortage in mining areas. . In the past 30 years, my country has made great achievements in the treatment and utilization of coal mine water inrush, but the usual practice is to raise the mine water to the ground for treatment and then transport it to underground use through the pipeline system. This method requires a large site to build water treatment facilities on the ground, an...

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Problems solved by technology

[0003] The surface mine water purification process is usually a coagulation sedimentation (or clarification)-filtration-disinfection process, the system is complicated, and it is not suitable for use in the small space of the coal mine underground

my country's patent "Method for Purifying Water in Goafs of Coal Mine" (ZL02129397.X) directly guides mine water into goafs. This method can only purify mine water with very low suspended solids content. Generally, the suspended solids content is required to be less than 200mg / L, or even lower

However, the content of suspended solids in mine gushing water of fully mechanized coal mines in my country is usually hundreds to thousands of mg per liter. This type of mine gushing water contains a large amount of suspended solids mainly coal chips and rock powder. If it is directly guided into the mining The goaf is very easy to settle down at the front end of the goaf, causing siltation and blockage. Since the silted goaf cannot be dredged, the service life of the entire goaf is greatly shortened; some goafs have huge space, and the filling rocks, Gangue and residual coal have unique components. It takes tens of days to several months for mine water to flow out of the goaf after entering the goaf. During this period, complex physical and chemical reactions occur, resulting in excess iron and manganese in the effluent, which is used for industrial water supply. It brings great harm, and it can only be used after further iron and manganese

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