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The water quality online monitoring system consists of four parts: sampling unit, analysis and test unit (monitoring instrument), data acquisition and transmission unit, and monitoring center. At present, there are many on-line monitoring systems for water quality COD, NH3-N, TOC, TN, TP, five parameters, and UV.
At present, there are about 50 companies that produce and sell water quality online monitoring systems in China, and over 30 manufacturers have passed certification. After more than ten years of development, China's water quality online monitoring system has evolved from technology import and absorption to patented products with independent property rights, from semi-automated development to informationization, and from the workshop form to the development of one of the pillar industries for monitoring special instruments. Well-known enterprises with excellent technology, considerate service and large scale, the development process of the online water quality monitoring system can be roughly divided into the following three stages.
Increase the supervision and management of the online water quality monitoring system, and establish and improve the qualification and accreditation system for automatic environmental monitoring systems. Improve the development planning and technical policies of environmental monitoring instruments in a timely manner, clarify the development direction of water quality and environmental monitoring instruments, guide and standardize the healthy development of environmental monitoring instruments, and avoid blind obedience for enterprises. Through the China National Environmental Monitoring Center, the environmental status of the environmental monitoring instruments should be tested for suitability and announced to the public.
Development and Future of Water Quality Online Monitoring System
The water quality online monitoring system is a comprehensive online automatic monitoring system consisting of an online automatic analysis instrument and a modern sensing technology, automatic measurement technology, automatic control technology, computer application technology, and related specialized analysis software and communication network. system. Water quality online monitoring system started earlier in foreign countries, and China is still at an exploratory stage in the construction of early warning and forecasting systems such as automatic water quality monitoring and rapid mobile analysis.