Multi-parameter water quality online analyzer

Abstract

The invention provides a multi-parameter water quality online analyzer which uses a first peristaltic pump to extract a sample, and the sample can be pumped into a digester through a first tee-junction electric valve, a first tee-junction electromagnetic valve, a second tee-junction electromagnetic valve, a third tee-junction electromagnetic valve and a fourth tee-junction electromagnetic valve. Athird peristaltic pump is connected in series between the fourth tee-junction electromagnetic valve and the second tee-junction electric valve; the digested sample is pumped into the second tee-junction electric valve connected with the third tee-junction electromagnetic valve by the third peristaltic pump; the second tee-junction electric valve is further connected with a first pipeline connected with a first photometer through a fifth tee-junction electric valve, and the fifth tee-junction electric valve is further connected with a second photometer; an oxidizing agent is pumped to the second tee-junction electromagnetic valve through a second peristaltic pump, and the oxidizing agent is mixed with the sample before digestion; and the first tee-junction electromagnetic valve is connected with a second pipeline of a color developing agent required for extracting total nitrogen. All electrical elements are controlled by a single-chip microcomputer, a plurality of common parts are shared by measurement pipelines of total phosphorus, total nitrogen and ammonia nitrogen parameters, the structure is compact, and an application range is wide.

Description

Technical field [0001] The invention belongs to the technical field of environmental monitoring and relates to a multi-parameter water quality online analyzer. Background technique [0002] With the maturity of automation control technology and the exponential increase in demand for chemical analysis applications, online water quality analyzers came into being in the 1930s and 1940s. Water quality online analyzer is mainly used for water quality monitoring of domestic water, sewage treatment, and industrial process control. [0003] Although, after decades of technological evolution in China, online water quality analysis products have greatly improved their performance indicators such as measurement methods and measurement accuracy, the current products on the market are based on a certain parameter or 2-3 Parameters are developed separately, for example, only total phosphorus, total nitrogen, chemical oxygen demand, ammonia nitrogen can be measured alone, or only total phosphoru...

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Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a multi-parameter water quality online analyzer, which is used to solve the problem in the prior art that the analyzer is only developed independently based on a certain parameter or 2-3 parameters

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