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Process of treating and utilizing acid waste water containing heavy metal

A technology for acidic wastewater and heavy metals, applied in water/sewage treatment, water/sludge/sewage treatment, separation methods, etc., can solve problems such as resource waste, environment, pollution, etc., to reduce water consumption, simple operation and maintenance, and reduce effect of influence

Inactive Publication Date: 2007-03-21
天津佰腾生产力促进中心有限公司
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Problems solved by technology

[0009] Aiming at the problems existing in the existing metal acid wastewater treatment, the present invention finds another way, adopts physical methods, and provides a method for the treatment and utilization of acid wastewater containing heavy metals
Fundamentally solve the problems of waste of resources and possible environmental pollution in the treatment process of acidic wastewater containing heavy metals, and achieve the purpose of recycling metal acidic wastewater resources

Method used

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  • Process of treating and utilizing acid waste water containing heavy metal
  • Process of treating and utilizing acid waste water containing heavy metal
  • Process of treating and utilizing acid waste water containing heavy metal

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Embodiment Construction

[0046] Below in conjunction with accompanying drawing, the present invention will be further described:

[0047] As shown in Figure 1 and Figure 2, the purification and washing wastewater produced in the production process of smelting flue gas acid production is 80-100m 3 / h, acid containing about 0.7%, total suspended solids (ss) is 2480mg / L, acid waste water containing heavy metals such as Cu, Ni, Pb, Ca, enters the ceramic filter material filter facility 5 after sedimentation in the sedimentation tank 1 to filter. The waste water flows in from the water inlet a on the upper part of the filtration facility, and flows down sequentially through the ceramic filter material layer c and the ceramic filter plate d with a filter material particle size of 2.0mm and a filter layer thickness of 0.70m. At a filtration rate of 6m / h, impurities such as suspended matter in water and macromolecular particles with a particle size between 0.2-1.0mm are mechanically screened through the filter...

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Abstract

The process of treating and utilizing acidic waste water containing heavy metal includes the following steps: filtering the acidic waste water containing heavy metal in two filters with specific material; 2. purifying water and producing acid; and 3. reutilizing the treated waste water with relatively low acid concentration. The present invention has low cost, saving in resource, long equipment service life, high treating effect and other advantages.

Description

technical field [0001] The invention relates to a method for treating and utilizing acid waste water containing heavy metals produced in smelting, chemical industry, metal processing, mining and other industrial production processes. Background technique [0002] my country's smelting, chemical, metal processing, mining and other industries consume a lot of water resources in the production process, and at the same time produce a large amount of acidic wastewater containing heavy metal ions. Due to insufficient technology and investment, the cost of recycling is high, heavy metals in wastewater are difficult to recover, and wastewater cannot be recycled well. For the treatment of this kind of wastewater, there are many methods in China at present. Such as: neutralization precipitation method, sulfide precipitation method, redox method, iron oxidation method, flotation method, adsorption method, biological flocculation method, ion exchange method, etc. However, the neutrali...

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Application Information

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IPC IPC(8): C02F1/00C02F1/62B01D36/02
Inventor 张有贤
Owner 天津佰腾生产力促进中心有限公司
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