Construction of Multi-dimensional Monitoring System in Urban Intelligent Drainage Control
The poor timeliness of pollution traceability of urban rivers and drainage networks and the imbalance of spatial coverage of the monitoring system are still outstanding problems in urban water environment management.With the develop-ment of technologies such as drones,Internet of Things,online water quality monitoring,and high-precision positioning,the construction of a multifaceted monitoring system that rapidly conducts pollution traceability is gradually being realized.The distributed detection instruments were installed at key nodes of the drainage network and key sections of the river in Haotouchong area of Zhongshan City,while unmanned surface vehicle was applied to conduct topographic measurement and wa-ter quality monitoring on the urban river.Thereafter,the monitoring system was completed and used for multivariate monitoring data,which suggested the complementary advantages of the distributed instruments and the unmanned monitoring boat.In addi-tion,based on the result that the correlation coefficient between conductivity and NH3-N was not less than 0.92,and the current situation of ammonia nitrogen as the main pollutant,it verifies the rationality of it as the main water quality monitoring index.