Heavy-metal-containing flotation wastewater treatment and recycling technique

A flotation wastewater recycling technology, applied in flotation water/sewage treatment, mining wastewater treatment, reflux water treatment, etc., can solve problems such as environmental pollution of flotation wastewater containing heavy metals, achieve resource saving, convenient and accurate control , the effect of less dosage

Inactive Publication Date: 2016-10-26
云南森海清洋科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a wastewater treatment technology with strong technical pertinence and low treatment cost, which can effectively solve the environmental pollution problem of flotation wastewater containing heavy metals

Method used

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  • Heavy-metal-containing flotation wastewater treatment and recycling technique

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Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: A heavy metal-containing flotation wastewater treatment and resource recycling process. The flotation tailings are first subjected to primary sedimentation, coagulation treatment, and air flotation to remove suspended solids, foaming agents and collectors. Then it is sent to a fluidized adsorber to further remove the residual foaming agent and collector. The effluent is then passed through a resin exchange desalinizer to remove sodium and potassium salts. The primary sludge is pumped into the filter press for dehydration and then discharged into the tailings pond. Enter the conditioning tank to continue processing. The amount of coagulant added in the coagulation treatment process is based on 100 grams per ton of wastewater.

[0020] The air source used in the air flotation method is air, and the collector butyl xanthate is oxidized to grease-like substances and removed by air flotation.

[0021] The fluidized adsorber uses dissolved air water microbubbles as the...

Embodiment 2

[0030] A process for the treatment and recycling of heavy metal flotation wastewater. The flotation tailings are first subjected to primary sedimentation, coagulation treatment, and air flotation to remove suspended solids, foaming agents and collectors, and then sent to the stream The chemical adsorber further removes the residual foaming agent and collector, the effluent is then passed through a resin exchange desalinizer to remove sodium and potassium salts, the primary sludge is pumped into the filter press for dehydration and then discharged into the tailings pond, and the filtered water enters the regulating tank to continue deal with.

[0031] The amount of coagulant added in the coagulation treatment process is 270 grams per ton of wastewater.

[0032] The gas source used in the air flotation method is ozone, and the collector butyl xanthate is oxidized into oils and fats and removed by air flotation.

[0033] The fluidized adsorber adopts dissolved gas water microbubbles as...

Embodiment 3

[0038] A process for the treatment and recycling of heavy metal flotation wastewater. The flotation tailings are first subjected to primary sedimentation, coagulation treatment, and air flotation to remove suspended solids, foaming agents and collectors, and then sent to the stream The chemical adsorber further removes the residual foaming agent and collector, the effluent is then passed through a resin exchange desalinizer to remove sodium and potassium salts, the primary sludge is pumped into the filter press for dehydration and then discharged into the tailings pond, and the filtered water enters the regulating tank to continue deal with.

[0039] The amount of coagulant added in the coagulation treatment process is based on 25 grams per ton of wastewater.

[0040] The gas source used in the air flotation method is ozone, and the collector butyl xanthate is oxidized into oils and fats and removed by air flotation.

[0041] The fluidized adsorber adopts dissolved air water microbu...

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Abstract

The invention belongs to the technical field of flotation mineral separation and clean production, and particularly relates to a heavy-metal-containing flotation wastewater treatment and recycling technique. The technique comprises the following steps: carrying out primary settling, coagulation treatment and flotation on flotation tailings to remove the solid suspended substances, foaming agent and collector, sending into a fluidized adsorber to further remove the residual foaming agent and collector, passing the effluent water through a resin exchange desalter to remove sodium and potassium salts, pumping the primary settling sludge into a filter press, dewarering, discharging into a tailing bin, and sending the filtrate into a regulating tank for continuous treatment. Compared with the prior art, the technique provided by the invention has the advantage of low chemical consumption, and is convenient and accurate for control; and the primary indicators of the wastewater treated by the technique can be respectively controlled within the required ranges in Grade 3 of National Sewage Comprehensive Discharge Standard GB8978-1996, and satisfy the national environmental requirements.

Description

Technical field [0001] The invention belongs to the technical field of flotation beneficiation and clean production, and specifically relates to a process for treatment and recycling of heavy metal flotation wastewater. Background technique [0002] Flotation is an important method of beneficiation, which requires the addition of various collectors, foaming agents, regulators and other beneficiation agents. Therefore, some heavy metal ions and various beneficiation agents will remain in the flotation wastewater. These pollution factors have Very toxic, waste water discharged outside will seriously pollute the environment. Direct reuse in production will not be accepted by mineral processing companies due to lowering the actual recovery rate of mineral processing. So far there is no effective treatment technology for this kind of waste water. China's authorized patents CN201420351636.6 and CN201410294145.7 involve heavy metal-containing flotation wastewater treatment and resource ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F11/12
CPCC02F9/00C02F1/24C02F1/28C02F1/42C02F1/52C02F1/5236C02F1/5245C02F1/54C02F1/545C02F1/56C02F11/122C02F2101/20C02F2103/10C02F2209/08C02F2301/04
Inventor 王全文
Owner 云南森海清洋科技有限公司
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