Method and device for monitoring heavy metal pollution of water on basis of concentration cell

A concentration-difference battery and pollution monitoring technology, applied in the direction of electrochemical variables of materials, etc., can solve the problems of complex operation, high cost, relying on the cultivation of electricity-producing bacteria, etc., and achieve the effect of simple operation and low cost

Pending Publication Date: 2018-07-24
NANJING NORMAL UNIVERSITY
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Problems solved by technology

[0004] Technical problems to be solved: In order to solve the existing heavy metal pollution monitoring in water, manual sampling cannot be realized, and online and in-situ monitoring cannot be realized, and the water quality monitoring method based on microbial fuel cell sensors has high cost, complicated operation, easy to cause pollution, and relies on production The technica

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  • Method and device for monitoring heavy metal pollution of water on basis of concentration cell
  • Method and device for monitoring heavy metal pollution of water on basis of concentration cell
  • Method and device for monitoring heavy metal pollution of water on basis of concentration cell

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Embodiment 1

[0023] Such as figure 1 As shown, the present invention provides a method and device for on-line and in-situ monitoring of heavy metal pollution in water based on a concentration cell. The detection device includes 1-electrode near dirty end, 2-electrode fixing device near dirty end, 3-electrode far away dirty end, 4-electrode fixing device far dirty end, 5-wire, 6-external resistance, 7-data acquisition device . The artificial wetland environment was constructed in the laboratory, and the two electrodes (titanium mesh with a diameter of 8 cm) were firmly connected to the top of the electrode fixture (tubular polytetrafluoroethylene with a diameter of 8 cm and a length of 12 cm), and then the electrode fixture was fixed. The bottom end of the electrode is inserted into the bottom mud of the wetland with a buried depth of 7 cm. The electrode is immersed in the overlying water of the bottom mud and is 5 cm higher than the surface of the bottom mud. This height can ensure the a...

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Abstract

The invention provides a method and a device for monitoring heavy metal pollution of water on the basis of a concentration cell. Electrodes are arranged in water near a dirt discharge port and far away from the dirt discharge port to form the concentration cell, and the concentration of heavy metal ions of the water near the dirt discharge port is higher than the concentration of the ions of the water far away from the dirt discharge port, so that the concentration cell can be driven to generate voltage or current signals. The method and the device have the advantages of on-line in-situ monitoring, low cost and simplicity in operation; furthermore, in the monitoring process, any chemical reagents are not used and pollution is avoided.

Description

technical field [0001] The invention belongs to the technical field of environmental detection, and in particular relates to an on-line and in-situ monitoring method and device for heavy metal pollution in water based on a concentration difference battery. Background technique [0002] Cd, Cr, Co, Hg, Ge, Mn, Ni, Pb, Cu, etc. are all heavy metals that can pollute water bodies. Usually, very small amounts of heavy metals in water bodies will not cause toxic effects. Once these heavy metals exceed a certain concentration standard, it will cause water pollution. Certain heavy metals also exist in natural water bodies, but these heavy metals do not exceed the necessary concentration, so they usually do not threaten the normal growth of aquatic organisms. With the continuous development of the industrial level, the discharge of heavy metals is increasing, and the pollution of heavy metals in water is becoming more and more serious. Water bodies with excessive heavy metals will n...

Claims

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Application Information

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IPC IPC(8): G01N27/26
CPCG01N27/26Y02A20/20
Inventor 邓欢刘丽吴少松杨楚瑶吴俊霆钟文辉
Owner NANJING NORMAL UNIVERSITY
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