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Device for processing heavy metal in garbage percolate

A technology for landfill leachate and heavy metals, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., to achieve the effect of increasing the number of effective collisions and strengthening the adsorption effect.

Inactive Publication Date: 2012-07-18
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few reports on the application of electrokinetic technology to the treatment of heavy metals in landfill leachate.

Method used

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  • Device for processing heavy metal in garbage percolate
  • Device for processing heavy metal in garbage percolate

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Embodiment Construction

[0024] A structure of a device for treating heavy metals in landfill leachate such as figure 1 As shown, the anode area and the cathode area are respectively arranged at the left and right ends of the adsorption chamber, and are separated from the adsorption chamber by a water barrier membrane 12 . The adsorption layer in the adsorption chamber is composed of upper, middle and lower layers, wherein the upper and lower layers are gravel sublayers 9, the middle layer is attapulgite clay layer 10, and the bottom layer of the adsorption chamber is a water collection tank 11.

[0025] The anode area includes an anode chamber 2, an anode 4, a circulating liquid pool 6, a constant current pump 7 and a magnetic stirrer 8, the anode chamber 2 is arranged behind the water barrier membrane 12, the anode 4 is arranged in the anode chamber 2, and the circulating liquid pool 6 is located Outside the anode chamber 2, the inlet of the circulating liquid pool 6 communicates with the outlet...

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Abstract

The invention discloses a device for processing heavy metals in a garbage percolate. The device comprises an adsorbent chamber, an anode region and a cathode region, wherein the anode region and the cathode region are respectively arranged at two ends of the adsorbent chamber and separated from the adsorbent chamber through a water separation film; the adsorbent chamber consists of a gravel layer, an attapulgite clay layer and a water collecting groove, the anode region comprises an anode chamber and an anode, the cathode region comprises a cathode chamber and a cathode, and the anode and thecathode are respectively connected with the positive electrode and the negative electrode of a direct current voltage and current stabilization apparatus. The device can effectively adsorb the heavy metal ions in the garbage percolate so that the adsorptive effect is intensified, the heavy metal ions on an adsorbent can be desorbed under the action of galvanic electricity and then transferred to the anode chamber and the cathode chamber, thereby the adsorbent is regenerated.

Description

technical field [0001] The invention belongs to the field of landfill leachate treatment, and in particular relates to a device for treating heavy metals in landfill leachate by using an adsorption-kinetic composite technology. Background technique [0002] At present, about 70% of urban waste in our country is disposed of by landfill. Since the garbage treated by landfill is basically not sorted, a large number of waste electronic products and domestic garbage are piled up together, and they are directly landfilled without treatment, resulting in more than 10 copper, zinc, iron, lead, etc. in the landfill leachate. a metal ion. The concentration of iron in the leachate can be as high as 2050mg / L, the concentration of lead can reach 12.3mg / L, the concentration of zinc can reach 130mg / L, and the concentration of calcium can even be as high as 4300mg / L. [0003] Heavy metals have long-term cumulative effects and interactions on water and soil pollution. According to reports...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/06
Inventor 孙亚兵徐建华付玉玲邹婷李振玉王惠英陈颖王瑾瑜缪虹
Owner NANJING UNIV
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