On-site multi-spot water-sample sampling device and COD (chemical oxygen demand) content detection method

A sampling device and water sample technology, applied in the field of spectral detection, can solve the problems of reagent consumption, long analysis time, and secondary pollution, and achieve the effects of simple and convenient operation, high collection efficiency, and accurate measurement

Inactive Publication Date: 2015-04-01
EAST CHINA JIAOTONG UNIVERSITY +2
10 Cites 9 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0002] When evaluating water pollution, chemical oxygen demand (COD) is an important indicator to measure the degree of organic pollution in water. Many related studies have shown that when the concentration of COD in water exceeds a certain limit, it will affect water quality. and the growth of aquatic products will cause negative impacts, and will increase the cost of water treatment. Therefore, it is of great practical significance to quickly detect the COD concentration in water.
Traditional COD determination methods include potassium dichromate titration and rapid digestion spectrophotometry, etc. New methods such as electrochemical methods and flow injection analysis are also used for COD measuremen...
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Method used

Lifting water pump 303 and water storage tank 301 are fixedly installed inside the housing, for ease of control, described lifting water pump 303 comprises rising water pump and descending water pump, and the water outlet of rising water pump communicates with the water outlet hole that is arranged on the bottom of the housing, The water inlet is communicated with the water storage tank 301; the water outlet of the descending water pump is communicated with the water storage tank 301, and the water inlet is communicated with the water inlet hole arranged on the top of the housing. When the submarine type electric drive device needs to rise like this, only need to start the ascending water pump, the ascending water pump pumps out water from the water storage tank 301 and discharges to the outside of the housing, the buoyancy of the device is greater than gravity, and the submarine type electric drive device rises. When needing to descend, then start the descending water pump, and the descending water pump pumps water from the external water source to the water storage tank 301 inside the housing, the buoyancy of the device is less than gravity, and the submarine type electric drive device rises. Because the internal space of the whole housing is small, in order to ensure that the asc...
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Abstract

The invention relates to the technical field of spectrum detection, in particular to an on-site multi-spot water-sample sampling device and a COD (chemical oxygen demand) content detection method. The device comprises a submarine-type armature device, a sampling device and a remote control device. The method comprises the steps of (a) preparation of equipment, (b) sampling, (3) multi-point sampling, wherein the step (b) is repeated until all samples in a sampling chamber are taken, (d) sample recycling and (e) spectrum detection. Accurate advancing information and position information of the submarine-type armature device can be obtained in a water body, the device is more convenient to operate and control, and the COD content distribution condition of the water body can be measured more accurately; multiple samples can be collected after the device is launched once, and the collection efficiency is high; the COD content of the water body can be quickly and accurately measured through spectra, and no second pollution is caused to the water body.

Application Domain

Technology Topic

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  • On-site multi-spot water-sample sampling device and COD (chemical oxygen demand) content detection method
  • On-site multi-spot water-sample sampling device and COD (chemical oxygen demand) content detection method
  • On-site multi-spot water-sample sampling device and COD (chemical oxygen demand) content detection method

Examples

  • Experimental program(1)

Example Embodiment

[0051] Examples 1~10
[0052] The device and method provided by the present invention are used to test the COD content of water bodies, and the test results are shown in Table 2.
[0053] Table 2
[0054]
[0055] From the data in Table 2, it can be seen that the COD content of the water body measured by the method of the present invention is close to the data obtained by the existing method, and the COD content of the water body can be quickly determined by the present invention, and the result is reliable.
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Description & Claims & Application Information

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