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Online automatic BOD monitoring system and use method thereof

A technology of automatic monitoring and strains, applied in the direction of analysis materials, instruments, etc., can solve the problems of complex water sample processing process, and achieve the effect of reducing maintenance, reducing work intensity and increasing parallelism

Active Publication Date: 2016-09-07
LIHE TECH (HUNAN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the domestic BOD testing instruments are laboratory instruments, and only a part of the laboratory instruments are made by the differential pressure method. There are no online ones for the time being. The main reason is that the water sample processing process is more complicated when testing BOD.

Method used

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  • Online automatic BOD monitoring system and use method thereof
  • Online automatic BOD monitoring system and use method thereof
  • Online automatic BOD monitoring system and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] see Figure 1-2 , The BOD on-line automatic monitoring system of the present invention is constituted as follows: nutrient salt and strain quantitative device, quantitative mixed aeration device, distribution device, cultivation device, data acquisition device; above-mentioned devices are connected successively. Quantitative device for nutrient salts and strains: including two storage bottles for nutrient salts and strains with bottom stirring, which are stored at a low temperature of 4°C. There is a three-way valve in the middle of the connection pipeline for nutrients and strains, which can be passed through Switch the three-way valve to switch the pipeline channel to any one of nutrients or bacteria.

[0035] Nutrients or strains are drawn through the pump body, the volume is measured by the liquid metering device, and then pushed to the designated position through the pump body. The above-mentioned liquid metering device includes a liquid level tube and a liquid le...

Embodiment 2

[0037] see image 3, the process of BOD analysis using the BOD online automatic monitoring system of the present invention is as follows: the test process starts, and the sample injection process: the valve 14 and valve 4 are switched to the open state, and the pump 1 starts to work at the same time, and the sample is drawn into the liquid level through the pump body 1 In the pipe 2, the liquid level is finally determined by the liquid level detection device next to the liquid level pipe 2 to achieve quantitative purposes, and then the pump 1, valve 14 and valve 4 are closed, and the sample is temporarily stored in the liquid level pipe 2; add salt And the process of adding bacteria: the channel of switching valve 1 can achieve the purpose of extracting nutrient salt or bacteria, and the channel of switching valve 2 can inject nutrient salt or bacteria into the liquid level pipe 2, or pump it from the liquid level pipe 1 into the liquid level pipe 2, pump the nutrient salt or ...

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Abstract

The invention discloses an online automatic BOD monitoring system. The online automatic BOD monitoring system comprises a nutritive salt and strain quantifying device, a quantitative mixing aerating device, a distributing device, a culturing device and a data collecting device which are sequentially connected. According to the online automatic BOD monitoring system, the processing steps are automatically realized, so that the working intensity of an experimenter is greatly reduced; the number of sample bottles meets the quantity requirement of testing in each of 7 days, and the replacement cycle of the sample bottles is one week, so that the maintenance amount is reduced; strains are stored in the environment of 4 DEG C and can be continuously used, so that the parallelity is increased, and meanwhile, the workload is reduced; and furthermore, the online detection time of the system is not influenced by other factors.

Description

technical field [0001] The invention relates to the technical field of water quality analysis, and more specifically relates to a BOD online automatic monitoring system and a using method thereof. Background technique [0002] BOD (Biochemical Oxygen Demand) can reflect the degree of organic matter pollution in sewage. The more organic matter in sewage, the more oxygen consumption and the higher the BOD value, and vice versa. Therefore, it is one of the most important parameters in the sewage water quality index. Although the measurement of BOD takes a long time and the data is not updated in time, the BOD index is comprehensive - comprehensively reflects the total amount of organic matter, and simulated - imitating the self-purification of water bodies, so it is difficult to replace it with other indicators. [0003] The principle of measuring BOD by differential pressure method is: in a closed system, when the microorganisms in the sample to be tested undergo aerobic bioc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/04
CPCG01N7/04
Inventor 丁雄张琳琳彭文姣李安强徐岩
Owner LIHE TECH (HUNAN) CO LTD