A high-efficiency filter device and wastewater treatment method for mineral processing wastewater treatment

Abstract

Provided are a high-efficiency filter device and wastewater treatment method for beneficiation wastewater treatment. The filter device comprises a tank body, wherein a material discharge hopper is formed in the lower part of the tank body, a wastewater supply device is arranged at the upper part of the material discharge hopper, and an anti-blocking device is arranged in the middle of the tank body; and the parts, under the anti-blocking device, in the tank body are filled with filter filler composed of secondary mineral, weak soil, collapsible soil and sandy soil, a floating water discharge device is arranged under the anti-blocking device, and the tank body is provided with water drainage pipes, waste liquid discharge pipes and liquid level sensing contacts corresponding to different liquid level positions. When beneficiation wastewater treatment is conducted through the high-efficiency filter device, wastewater is mixed with the filter filler through a water distribution device under the pressure of inlet water, the obtained mixed liquid is raised to the top from bottom to top through the anti-blocking device, and then purified water is discharged through the floating water discharge device; the filtered waste liquid is returned to an adjustment tank, and when the suspended solid content in the discharged purified water does not meet the requirements, filtration stopping andreplacement of the filter filler are conducted; the filter device has even water distribution, and no additional arrangement of a stirring device is needed; and no agglomeration of the filter filleroccurs, the filter filler is not stirred by the water discharge device, and the filter device has a high speed and a good filter effect.

Description

technical field [0001] The invention relates to sewage treatment, in particular to a high-efficiency filter device for mineral processing wastewater treatment and a method for using the filter device to treat mineral processing wastewater. Background technique [0002] Mine development includes mining and beneficiation. Mineral beneficiation is the second process of mineral resources industry, including three processes of ore washing, crushing and beneficiation. Through ore dressing, the valuable metals in the ore with low valuable metal content and multi-metal symbiosis can be enriched, separated from each other, and processed into corresponding concentrates, so as to facilitate the high efficiency of subsequent smelting processes and the high quality of metal products. Mineral dressing production wastewater consists of four parts: ore washing wastewater, crushing system wastewater, mineral processing wastewater and flushing wastewater. Its characteristics are: ①The water ...

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Problems solved by technology

[0005] 1. Poor natural settlement effect

Because mineral processing wastewater contains a large amount of fine particles of organic matter and inorganic matter, the sedimentation performance is poor, and the natural sedimentation method is used, which covers a large area and takes a long time to settle, so the ideal removal effect is often not achieved.

[0006] 2. The neutralization precipitation method and the coagulation precipitation method have a large amount of dosing

Due to the poor settling performance of mineral processing wastewater and the large amount of wastewater, the amount of coagulant used increases, and the operating cost of the system increases; at the same time, a large amount of sludge containing heavy metal precipitation and difficult to treat increases.

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