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Treatment device and method for removing heavy metals out of sewage

A treatment device and heavy metal technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of difficult low-concentration wastewater, complicated operation, high cost, etc., and achieve low investment , low cost, small footprint

Active Publication Date: 2014-08-13
FUZHOU UNIV
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Problems solved by technology

These methods are effective under certain conditions, but there are disadvantages such as high cost, complicated operation, and difficulty in treating low-concentration wastewater.

Method used

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  • Treatment device and method for removing heavy metals out of sewage

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 As shown, as shown in the accompanying drawings, the present invention is an upflow treatment device for removing heavy metals in sewage, which mainly includes a tank body, the bottom of the tank body is connected with a water inlet pipe, and the upper end of the tank body is connected with a water outlet pipe. The tank is provided with a sandstone primary filter layer 1, a microbial adsorption layer 2, a filter cloth 3 and a granular activated carbon adsorption layer 4 from bottom to top in sequence, and the microbial adsorption layer is provided with spheres with microorganisms attached to the surface.

[0021] The domestic sewage treated by grille, primary sedimentation and aeration enters the treatment device from the bottom through the water inlet, and is first filtered through the primary filter layer 1 f...

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Abstract

The invention provides a treatment device and method for removing heavy metals out of sewage. The treatment device comprises a tank body, wherein a water inlet pipe is connected to the bottom of the tank body, a water outlet pipe is connected to the upper end of the tank body, a sandstone initial filter layer, a microbial adsorption layer, filter cloth and a granular activated carbon adsorption layer are sequentially arranged in the tank body from bottom to top, and the microbial adsorption layer is provided with spheres of which the surfaces are attached with microbes. By the treatment device and the treatment method, the disadvantages of the traditional metal ion removal methods that the cost is high, the operation is complicated, low-concentration wastewater is difficult to treat are overcome, and treated water can reach reuse standards by using a microbial treatment manner and adopting a multi-stage filtration and adsorption manner; meanwhile, potential heavy metal resources are recycled.

Description

technical field [0001] The invention relates to a treatment device and a treatment method for removing heavy metals in sewage. Background technique [0002] With the rapid development of social economy and the rapid growth of urban population, the discharge of urban sewage is increasing day by day. Urban sewage has become an important source of environmental pollution. Urban sewage contains a large amount of COD, NH3-N, heavy metals and other pollutants. Heavy metal sewage will cause a lot of harm to human health and the natural environment. Heavy metal pollution has become one of the most serious problems in environmental pollution today. Traditional methods for removing metal ions include: chemical precipitation, chemical redox, activated carbon adsorption, ion exchange, solvent extraction, physical, membrane separation, etc. These methods are effective under certain conditions, but there are disadvantages such as high cost, complicated operation, and difficulty in tre...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/20
Inventor 康得军谢丹瑜唐虹
Owner FUZHOU UNIV
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