A kind of coal washing wastewater treatment and reuse device

Abstract

The invention discloses a coal washing wastewater treatment and reuse device. There is a flocculant feeding mechanism, the second flocculation tank is provided with a CCD camera for monitoring the degree of flocculation in the second flocculation tank, the first flocculation tank is provided with a stirring mechanism, and the second flocculation tank is provided with a stirring mechanism. The bottom of the pool is provided with a non-powered turbulence mechanism, one side of the second flocculation pool is provided with a drain pipe, and the interior of the second flocculation tank is provided with a vertical upward water baffle in front of the drain pipe , the drainage pipe is connected with a self-cleaning filter press mechanism through the second pump group. The method performs multiple flocculation on the coal washing wastewater, and has the characteristics of sufficient flocculation, and the flocculated coal washing wastewater is subjected to pressure filtration through a self-cleaning filter press mechanism, which has the characteristics of good filter press effect and high work efficiency, and can be used for pressure filtering. The water body produced by filtration is used for coal washing work to realize the reuse of water body.

Description

technical field [0001] The invention relates to the technical field of mining machinery and equipment, in particular to a device for treating and reusing coal washing wastewater. Background technique [0002] The raw coal mined from the ground contains a lot of impurities and ash. If it is directly burned, it will cause waste of coal resources and increase air pollution. Therefore, coal preparation is an indispensable link in the process of coal mining and processing. Most of the coal preparation in my country adopts the wet separation method. 1t of raw coal needs 3-5 cubic meters of circulating water, and it is necessary to continuously add clean water, and then generate waste water containing a large number of fine particles. Usually, this kind of suspended particles containing a particle size of less than 1mm is used. The coal washing water is called coal washing wastewater. The investment and production costs of the coal washing wastewater treatment system are high. Some...

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Problems solved by technology

Most of the coal preparation in my country adopts the wet selection method. 1 ton of raw coal requires 3-5 cubic meters of circulating water, and it needs to be continuously replenished with clean water, and then produces wastewater containing a large number of fine particles. Usually, this kind of suspended particles with a particle size of less than 1mm Coal washing water is called coal washing wastewater. The investment and production costs of coal washing wastewater treatment system are large. Some coal yards only use simple processes such as gravity concentration or gravity sedimentation, so the quality of treated water is difficult to guarantee and the treatment efficiency is low.

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