Coal mine sewage treatment tank and treatment process

Abstract

The invention discloses a coal mine sewage treatment tank and a treatment process, and belongs to the technical field of coal mine sewage treatment equipment. The coal mine sewage treatment tank comprises a plurality of tank bodies, the tank bodies sequentially comprise a grating well, an adjusting tank, an anaerobic tank, an aerobic tank, a sedimentation tank and a disinfection tank according tothe water flow direction, and the disinfection tank is externally connected with a reuse water tank through a valveless filtering device; the grating well is connected with the adjusting tank througha plurality of layers of filter screens, and the pore diameters of the filter screens are sequentially reduced along with the direction of water flow; and the adjusting tank is connected with the anaerobic tank through a water pump and a pipeline, a water guide pipe is arranged among the aerobic tank, the sedimentation tank and the disinfection tank, a water inlet of the water guide pipe is buriedin the top of a previous tank body, and a water outlet of the water guide pipe is formed in a next tank body. The treatment tank and treatment process solve the problems that existing coal mine domestic sewage treatment is insufficient in precipitation, complex in process system and high in automation degree requirement, and a traditional brick-concrete structure treatment tank is high in engineering investment and operation cost and poor in treatment effect of ammonia nitrogen in sewage.

Description

technical field [0001] The invention relates to the technical field of coal mine sewage treatment equipment, in particular to a coal mine sewage treatment tank and a treatment process. Background technique [0002] With the continuous development of my country's coal industry, people's awareness of environmental protection is also increasing. The existing domestic sewage in coal mines is usually a traditional brick-concrete structure treatment tank and a flat glass fiber reinforced plastic treatment tank; the activated sludge method is generally used for treatment, while When the activated sludge method is used to treat domestic sewage in coal mines, it is necessary to use a secondary settling tank for mud-water separation of the mixed liquid flowing out of the aeration tank, so that the supernatant is discharged, and part of the concentrated activated sludge is returned to the aeration tank. As excess sludge is discharged into the sludge thickening tank, this method has insuf...

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Problems solved by technology

[0002] With the continuous development of my country's coal industry, people's awareness of environmental protection is also increasing. The existing domestic sewage in coal mines is usually a traditional brick-concrete structure treatment tank and a flat glass fiber reinforced plastic treatment tank; the activated sludge method is generally used for treatment, while When the activated sludge method is used to treat domestic sewage in coal mines, it is necessary to use a secondary settling tank for mud-water separation of the mixed liquid flowing out of the aeration tank, so that the supernatant is discharged, and part of the concentrated activated sludge is returned to the aeration tank. As excess sludge is discharged into the sludge thickening tank, this method has insufficient sedimentation, complex process system and high automation requirements, while the traditional brick-concrete structure treatment tank has high engineering investment and operating costs, and the treatment effect of ammonia nitrogen in sewage is poor. question

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