Sewage treatment system and method for mine construction based on horizontal centrifuge

Abstract

The invention discloses a sewage treatment system and method for mine construction based on a horizontal centrifuge, and the system comprises a horizontal centrifuge main body, a preliminary filtering tank is internally provided with a preliminary filtering mechanism for separating large solid-phase particles in sewage, a liquid phase output port is provided with a mud water treatment box, a mud water treatment mechanism for mixing a muddy water precipitant in sewage is arranged in the mud water treatment box, and a static mixer for secondarily mixing the muddy water precipitant and the sewage is also arranged at the output end of the muddy water treatment box. According to the sewage treatment system for mine construction based on the horizontal centrifugal machine, metal particles in sewage can be filtered out through the filtering pipeline, the precipitant can be added into mud water through the first dosing machine, then the stirring motor drives the stirring roller to stir, and after the concentration of the precipitant is detected through a concentration detection head, auxiliary supplementing is realized through a second dosing machine, the mixture is input into the static mixer through the water pump for secondary mixing.

Description

technical field [0001] The invention relates to the technical field of mine sewage treatment, in particular to a sewage treatment system for mine construction based on a horizontal centrifuge. Background technique [0002] Mine wastewater is a general term for natural dissolution and filtration water in mines, mineral processing wastewater, overflow water from mineral processing waste dykes, and leaching water from slag dumps. During the mining process, a large amount of sewage will be produced in the mine. , mud particles, mineral impurities, dust, dissolved salts, acids and alkalis, etc. After the sewage is pumped out of the mine using pumping equipment, it must be purified to the discharge standard before it can be discharged, otherwise it will pollute the environment. [0003] However, most of the existing treatment methods are to use a horizontal centrifuge for solid-liquid separation, and then add a precipitant to the liquid for purification. In the actual use of this ...

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Problems solved by technology

[0003] However, most of the existing treatment methods are to use a horizontal centrifuge for solid-liquid separation, and then add a precipitant to the liquid for purification. It was found that because the sewage is sometimes mixed with some hard metal particles, if these particles are directly input into the horizontal centrifuge without filtering, it may scratch the horizontal centrifuge when the horizontal centrifuge is working. At the same time, after the existing horizontal centrifuge has finished filtering the fine particles, it is necessary to manually add the precipitant to the liquid to separate the mud and water. During the operation, not only the uneven mixing of the precipitant may occur, but also may Because the concentration of precipitant is not enough, the mud-water separation and sedimentation effect will be poor, and rework will be required again, which is laborious and the effect is poor.

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