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System and method for monitoring total nitrogen and total phosphorus of water body

A monitoring system and water body technology, applied in the measurement of color/spectral properties, instruments, and analysis by chemical reaction of materials, etc., can solve the problem of time-consuming and laborious manual sampling, and achieve the effect of reliable performance, convenient operation and high sensitivity

Active Publication Date: 2017-01-04
常州市盛立泓环境科技有限公司
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Problems solved by technology

For the determination of total nitrogen and total phosphorus, manual sampling is time-consuming and laborious

Method used

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  • System and method for monitoring total nitrogen and total phosphorus of water body
  • System and method for monitoring total nitrogen and total phosphorus of water body

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] figure 1 As shown, the monitoring system includes automatic sampling control device, digestion device, total nitrogen, total phosphorus color development flow path, etc. The invention is based on the sequential injection analysis method, adopts a polytetrafluoroethylene tube with a diameter of 0.76mm, injects samples and various reagents in a certain order, mixes and reacts in the liquid storage tube HC.

[0025] Wherein: the syringe pump S1 in the automatic sampling control device has two channels, one channel communicates with the liquid inlet pipeline, and the other channel communicates with the digestion tank 4 . The liquid inlet pipeline is connected with the pipelines of the carrier liquid, the sample to be tested and the digestion agent. There is a solenoid valve on each pipeline, and the type of sample injection is controlled ...

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Abstract

The invention discloses a system and a method for monitoring total nitrogen and total phosphorus of a water body. The system comprises an automatic sampling control device, a digestion device and a total nitrogen and total phosphorus color-developing flow path, wherein the automatic sampling control device is connected with the digestion device, and an injection pump provides powder to drive a solution to flow; channels of an eight-channel selecting valve are connected with the digestion device, a phosphorous color-developing agent, the total nitrogen and total phosphorus color-developing flow path and a spectrograph correspondingly; the total nitrogen and total phosphorus color-developing flow path consists of a liquid storage pipe and the injection pump. By the method, a certain amount of digestion liquid is absorbed into the liquid storage pipe sequentially after digestion is finished, the total nitrogen and total phosphorus are measured sequentially, and pipelines and the digestion device are cleaned automatically after measurement is finished. By virtue of the system and the method, the total nitrogen and total phosphorus can be digested on line and can be measured on line. The system and the method have the advantages of convenience in operation, reliable performance, high sensitivity, high selectivity, low reagent consuming amount and the like.

Description

technical field [0001] The invention relates to an online automatic monitoring system for total nitrogen and total phosphorus in water bodies, which is suitable for rapid online automatic determination of total nitrogen and total phosphorus in surface water, seawater and waste water, and belongs to the technical field of water quality monitoring. Background technique [0002] At present, nitrogen and phosphorus are one of the main nutrients in water bodies. Excessive nitrogen and phosphorus will lead to eutrophication of water bodies. For the determination of total nitrogen and total phosphorus, manual sampling is time-consuming and laborious. Most of the existing total phosphorus and total nitrogen on-line analyzers are based on the principle of flow injection analysis. Sequential injection is a powerful single-channel flow technology, which eliminates the shortcomings of flow injection powered by peristaltic pumps, and uses precision injection The pump is the power. At t...

Claims

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Application Information

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IPC IPC(8): G01N35/08G01N21/31G01N21/78
CPCG01N21/31G01N21/78G01N35/085
Inventor 何礼张尚正魏福祥王盼盼
Owner 常州市盛立泓环境科技有限公司
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