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Huanchuang (Xiamen) Technology Co.,Ltd
Phone: ：+86 592 5029670
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| Prospect of water supply system of water quality monitoring and early warning system of water qualit |
| Edited：HuanChuang technology Date：2014-12-19 16:06:26 |
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The first in China to establish water quality monitoring and early warning system is the environmental protection system, since 1998 has covered the main stream key control sections in 145 countries. According to the data processing system, the Ministry of environmental protection issued weekly water temperature, pH, dynamic turbidity, dissolved oxygen, conductivity, potassium permanganate index, ammonia nitrogen and total organic carbon and other 8 indexes in water environment. In addition to the focus of control sections in 145 in a foreign country, province, city environmental protection system (county) thousands of water environment monitoring section to establish early warning system.
Similarly, hydraulic systems using automatic monitoring and laboratory detection combination, established a water quality monitoring and early warning system of each province and each basin. Such as the Yangtze River Commission of the Yangtze River dry tributary, currently has 551 water quality monitoring stations, a total of 680 monitoring sections, monitoring indicators include 18 environmental indicators of water pH value, ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, ammonia, CODMn, BOD, dissolved oxygen, total phosphorus, total arsenic, mercury, cadmium, lead, copper, total total total cyanide, volatile phenol, petroleum, total coliforms etc.. Around (basin) according to monthly water quality bulletin "".
In 2005 the North River cadmium pollution incidents, in Guangdong Provincial Department of science and technology support, Foshan water industry group limited company joint Beijiang River Basin on the water supply enterprises, by agreement to establish a "North River raw water quality monitoring and pollution early warning system", a total of more than 60 water covering Shaoguan, Qingyuan, Guangzhou, Foshan 4 city, 17 counties. The system consists of 4 main parts: 1. The establishment of the raw water quality monitoring system of the water supply enterprise; the raw water quality information sharing platform; system of the raw water pollution accident trends in simulation; cooperation mechanism of the emergency treatment. At present, Guangdong provincial towns water supply association is trying to put the emergency cooperation mode of this kind of warning is extended to Guangdong Province, Dongjiang Xijiang River Basin of Hanjiang River water supply enterprises, etc..
From the perspective of cooperation mechanism, "early warning system" The Danube incident, extremely similar with Guangdong Beijiang mode. The system consists of Germany, Austria, Hungary, 5 European countries to jointly develop, information transmission by the system of international warning center, countries along The Danube between countries and the domestic academic support mechanism composed of. From 1997 since put into operation, the system has played an important role in the prediction of changes in water quality prediction of The Danube watershed.
Water quality monitoring and early warning system of Tianjin Jieyuan water and the Shanghai waterworks, in domestic may has the typical representative. Mustard Park Waterworks of turbidity, pH value, dissolved oxygen, temperature, oxidation-reduction potential, electrical conductivity, total phosphorus, ammonia nitrogen, ground illumination monitoring online, a decision tree was built to predict the next chlorophyll in raw water model, simulation results show the average prediction model, the accuracy can reach 80%. Water early warning system in Shanghai waterworks, the monitoring system is composed of the comprehensive toxicity detector, UV spectral scanners and other on-line monitoring can be complementary with each other in three parts. Other online monitoring index values for pH, ORP, turbidity, ammonia nitrogen, conductivity, nitrite, manganese, can be dynamic and real-time monitoring of water quality and the relevant oxidation environment; pollution level of comprehensive toxicity monitor unknown contaminants; while UV spectral scanners can be based on comprehensive toxicity detector monitoring information, fast qualitative analysis of complete unknown contaminants.
4.3 water supply system of water quality monitoring and early warning system
Water special eleven five "warning and monitoring the water quality of drinking water and emergency technology research and demonstration" project, integrated topics related to achievement, in Ji'nan, Hangzhou, Dongguan demonstration construction "urban water supply water quality monitoring and early warning system technology platform", the early warning platform by the water quality information collection network, data processing center, visualization platform structure. Among them, the water quality of network information collection, by the online water quality monitoring system (including the raw water, finished water, the water pipe network, two water), laboratory detection data reporting system, heterogeneous system information access sharing form. Online monitoring indicators include electrical conductivity, pH value, temperature, residual chlorine, turbidity, dissolved oxygen, chlorophyll, oxygen consumption, ammonia nitrogen, total phosphorus, comprehensive toxicity, mercury, zinc, cadmium, lead, total organic carbon, cyanide and other 17.
Early warning early warning technique uses the platform, including online monitoring and forecasting model. The on-line monitoring and alarm information, can be directly on the residual chlorine, turbidity, oxygen consumption, ammonia nitrogen, mercury, zinc, cadmium, lead, total organic carbon, cyanide and other 10 indicators; use of electrical conductivity, salinity level and presumption of chloride intrusion. Using the prediction model and the pH value, temperature, dissolved oxygen, chlorophyll, total phosphorus, ammonia nitrogen and other comprehensive toxicity, oxidative environment monitoring data, qualitative analysis of raw water, and with the analysis of oxygen consumption, total organic carbon, ammonia nitrogen levels on the growth and the implementation of monitoring algae outbreak. At the same time, using the neural network simulation, but the impact of network on water quality pollution accident scope, degree, duration analysis and judgment.
Early warning platform demonstration projects into the design stage in 2007, 2010 put into operation, event prediction accuracy rate reaches above 80%.
The functions and technical features of water environment monitoring and early warning system for environmental protection and water conservancy system summary, one is the administrative management department functions based on national, province, city, support (county) level three monitoring section management; two is the system mainly consists of water quality automatic monitoring station, remote data transmission, database processing is composed of three parts; the three is the function of the system has not yet been achieved "prediction", but on perception and information statistics on current water environment quality; four is the basic information is not warning systems all rely on real-time online monitoring, laboratory test data and other data source can also |
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