Method and instrument for synchronous and continuous real-time determination of total organic carbon and total nitrogen

Abstract

The invention relates to an instrument and a method for synchronous and continuous real-time determination of total organic carbon and total nitrogen. The instrument mainly comprises a sampling head, a reagent bottle, an oxygen bottle, an acidifying reactor, an oxidization reactor, a semiconductor condenser, an ion absorber, an infrared CO2 detector, an ultraviolet NO3-detector, a data processor, an automatic controller and a liquid crystal display, wherein the sampling head is connected with the acidifying reactor by a sampling pipe and a sampling peristaltic pump, and so on; the oxidization reactor is connected with the infrared CO2 detector by a gas conveying pipe and is connected with the ultraviolet NO3-detector by a liquid conveying pipe; and the infrared CO2 detector and the ultraviolet NO3-detector are connected with the data processor and the liquid crystal display by circuits, and so on. According to the instrument and the method, one set of sampling, acidifying, oxidization and data processing system and two independent detectors are commonly used, and can be used for carrying out online synchronous and continuous automatic combined determination on the total organic carbon (TOC) and the total nitrogen (TN) in water. A measurement result can be displayed on the liquid crystal display in real time and also can be transmitted to a main server of the environment monitoring department through a remote protocol, and is displayed in various chart forms.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution monitoring. Specifically, it relates to an instrument and method capable of online and automatic simultaneous, continuous and real-time determination of total organic carbon (TOC) and total nitrogen (TN) in water. Background technique [0002] Organic pollution of water bodies, also known as eutrophication pollution, is mainly due to human activities discharging excess nutrients into water bodies beyond the self-cleaning ability of water bodies. Among them, total organic carbon (TOC) and total nitrogen (TN) are commonly used to measure the degree of organic pollution of water bodies. [0003] The best way to monitor and prevent organic pollution of water quality is to use online automatic measuring instruments to continuously measure and supervise environmental pollution indicators such as TOC and TN of wastewater. However, up to now, there are still the following shortcomings an...

AI Technical Summary

Problems solved by technology

However, up to now, there are still the following shortcomings and deficiencies in the online automatic determination of water quality: (1) The function of the instrument is relatively single

(2) Multi-parameter simultaneous measurement cannot be performed

In fact, this type of instrument is just a combination of multiple test systems on one instrument, so it is difficult to achieve multi-parameter simultaneous measurement

(3) Continuous real-time monitoring cannot be performed

Existing TOC, TN, and TP analysis instruments generally take 30 minutes to 60 minutes to measure a sample, from sample introduction to oxidation to detection, even those products called online analyzers, such as Phosphax Sigma of HACH in the United States, Tres.Ccon of WTW in Germany, TP800 of TORAY in Japan, etc., have a measurement cycle of at least 20 minutes. Real-time pollution status of water quality

[0004]In short, so far, no matter at home or abroad, there is no online automatic measuring instrument that can perform simultaneous, continuous and real-time measurement of TOC and TN water quality parameters

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