Treatment device and treatment method for acid wastewater polluted by mine heavy metals

A technology of acid wastewater and treatment equipment, which is applied in mining wastewater treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as heavy metal pollution, achieve low cost, simple operation, and simple process procedures Effect

Inactive Publication Date: 2014-10-01
路域生态工程有限公司
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Problems solved by technology

[0008] The object of the present invention is to propose a kind of biochemical treatment device of mine heavy metal polluted acidic wastewater and the disposal method to mine heavy metal polluted acidic wastewater, the biochemical device method of mine heavy metal polluted acidic wastewater realizes liquid in The flow between different treatment devices, the wastewater passes through the sedimentation device, the reduction device, the PRB ((

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  • Treatment device and treatment method for acid wastewater polluted by mine heavy metals
  • Treatment device and treatment method for acid wastewater polluted by mine heavy metals
  • Treatment device and treatment method for acid wastewater polluted by mine heavy metals

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Embodiment 1

[0049] see figure 1 , discloses a block diagram of a biochemical treatment device for mine heavy metal polluted acid wastewater according to a specific embodiment of the present invention.

[0050] The biochemical treatment device for mine heavy metal polluted acid wastewater includes: a sedimentation tank 4 , a reduction device 7 , a desulfurization device 10 , a PRB device 14 and a pH adjustment tank 17 .

[0051] Sedimentation tank, used for sedimentation and separation of solid impurities in wastewater to improve the process effect of subsequent processes;

[0052] The reduction device is used to provide an anaerobic environment for the rapid reproduction of SBR and improve the reduction efficiency of sulfate in wastewater;

[0053] A desulfurization device, connected to the upper part of the reduction device, is used to effectively desulfurize the waste gas generated during the microbial reduction process;

[0054] PRB device, used to effectively remove heavy metals in ...

Embodiment 2

[0063] Further, the present invention also discloses a method for safely disposing of heavy metal-contaminated acidic wastewater in mines using the above-mentioned biochemical treatment device for heavy-metal-contaminated acidic wastewater in mines, including the following steps:

[0064] (1) SRB (Sulfate Reducing Bacteria) Strain Screening: Separation and purification of the culture medium, cultivation and screening of local high-efficiency sulfate-reducing bacteria;

[0065] (2) Wastewater sedimentation: the acidic wastewater polluted by heavy metals in the mine is pumped out to the sedimentation tank through the first pump, and after preliminary sedimentation, solid impurities such as sediment are removed; the second pump is started to pump the waste liquid into the reduction device;

[0066] (3) Strain inoculation: Inoculate the strain into the acid wastewater of the heavy metal polluted mine through the strain addition port, and seal the strain addition port after the stra...

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Abstract

The invention discloses a treatment device and a treatment method for acid wastewater polluted by mine heavy metals. By virtue of the treatment device, liquid can flow among a sedimentation tank, a reduction device, a desulphurization device, a PRB (Permeable Reactive Barrier) device and a pH regulating tank through a pump system and a water guide pipe system, so that the reduction of sulfate in the wastewater, desulfurization of the wastewater, removal of heavy metal pollution and the pH regulation of the wastewater are achieved. The treatment device and the treatment method have the advantages of simple process, simple operation, low cost, high efficiency and capability of realizing large-scale and engineering application of treatment of acid wastewater polluted by the mine heavy metals; meanwhile, the pollutants are placed in a relatively closed space in the whole technological process, so that the secondary pollution in the pollution treatment process can be effectively avoided, thus the treatment device and the treatment method can be widely applied to the safe treatment of acid wastewater polluted by different types of mine heavy metals, and the pollution caused by the heavy metals such as arsenic, lead, copper, zinc, chrome, cadmium and the like in the wastewater can be effectively removed.

Description

technical field [0001] The invention relates to the fields of ecology and environmental protection, in particular to a biochemical treatment device for acidic wastewater polluted by heavy metals in mines and a treatment method for acidic wastewater polluted by heavy metals in mines. Background technique [0002] With the continuous mining and development of mine resources in our country, the massive accumulation of coal gangue and other tailings has become an important environmental problem. According to statistics, the tailings produced by the current mine mining and development have accumulated up to 6-10 billion tons, which has caused a series of geological environmental problems. Among them, mine heavy metal polluted wastewater has become a major hidden danger to the safety of the current mine ecological environment, especially coal gangue containing a large amount of sulfur. Due to the oxidation of pyrite, a large amount of acidic wastewater is produced. The dissolutio...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/10
Inventor 卜庆国张春禹王新民徐奥张姣段高旗
Owner 路域生态工程有限公司
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