Wastewater treatment process of iron-copper-sulfur polymetallic mine slurry detention reservoir

Abstract

The invention relates to a wastewater treatment process of an iron-copper-sulfur polymetallic mine slurry detention reservoir. The step includes the steps of 1,water intaking from the slurry detention reservoir, wherein wastewater can enter a slurry pool through a dirt leading pipe; 2, pretreatment, wherein impurities and sand particles are removed, homogeneity and averaged quantity are achieved, and meanwhile an oxidizing agent is fed to remove reducing substances; 3, preliminary physicochemical treatment, wherein a conditioning agent, coagulant, a heavy metal ion capturing agent and a flocculating agent are added, 4, secondary physicochemical treatment, wherein the conditioning agent, the coagulant, the heavy metal ion capturing agent and the flocculating agent are added, the PH value of wastewater is adjusted to 6.0-11.0, and zinc ions and various remaining metal ions are removed; 5, pH back conditioning; 6, slurry treatment, wherein slurry is dehydrated with a screw pump to form a dry filter cake. By means of the wastewater treatment process, the phenomenon of re-dissolution of heavy metal ions can be avoided; the treatment cost is low, less slurry is generated, and the situation of secondary pollution is avoided.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and relates to a waste water treatment process of an iron-copper-sulfur polymetallic mine mud storage silo. Background technique [0002] The main pollution of the waste water in the silt storage of iron-copper-sulfur polymetallic mines comes from the following aspects: the underground water of the mine and the excavated caves are discharged through unsealed or not tightly closed civil holes; the pollution of the heavy metal sediment in the silt storage; Mineral processing waste water pollution; rainwater soaking, scouring dumps to form pollution. [0003] Due to the predatory mining of mines, the damage to land resources is very serious, resulting in large-scale soil erosion, which is deposited in the mud storage, and a large amount of mine water and ore washing water are directly discharged into the mud storage, resulting in The heavy metal ions in the waste water of the reservoi...

AI Technical Summary

Problems solved by technology

[0012] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a wastewater treatment process for iron-copper-sulfur polymetallic mine mud storage, which can avoid the phenomenon of metal ion back-dissolution, and the treated wastewater can meet the standard discharge, and the treatment cost is low There will be no secondary pollution

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