Study On The Pollutans Dispersion Features And Disposal Measures Of Sudden Water Pollution Incident In Longhu Zhengzhou

Water pollution incidents will Cause serious water pollution and environmentaldamage. If disposed of improperly, it can cause long-term effects in the aquaticenvironment. Longhu in Zhengzhou is an artificial lake, water area of5.6km2,average depth of4.5m. It is an integrated project of urban ecology, landscape tourism,regional flood control, water resources utilization and other functions. Once thesudden pollution occurs, it will cause great concern in the community, and will haveserious negative effects, we should study the unexpected pollution incidents.On the basis of summary of sudden water pollution incident, through the analysisof the lake surrounding environment and operation mode, this paper lists potentialcontamination emergency pollution and other emergencies of Longhu that may arise,including Connected to water diversion engineering and river pollution, trafficaccident, mineral oil pollution, eutrophication, and human poisoning events.For different potential sudden pollution, contaminated by EFDC to simulate thedispersion features，made to controls the spread of pollutants. Sudden spread ofpollutants, the diffusion of forms is starting from the launch point, then spreading tothe surrounding, and the rate of performance slow down after. Farther distancessudden pollutant delivery point, the slower increase in the concentration of pollutants.Pollutants to put the point as the center of the ring pattern by the spread of radiation tothe surrounding. There is little relationship between the concentration of pollutants inthe size of the area affected and the initial release, and the concentration of the initialrelease of the decision point contaminated concentration, the greater the concentrationof the initial release, the sentinel The more serious pollution.Different types of potential pollution incident, according to the dispersionfeatures studies, conducted measures of disposal, to propose specific measures to dealwith. For the water diversion project and associated river pollution, suggested that aspecial water supply culvert along Wei He should be planned. If itis difficult to realize, automatic monitoring of water quality should be set, if waterquality anomalies found timely close the sluice. The pollution of connected channelswith Longhu, suggest that in the implementation of river water environmentalprotection measures at the same time, strict control of Dongfeng River and canal and the Longhu water exchange, to control the river into Longhu. Detailed waterenvironment monitoring plan should be formulated, strict execution. Leakage ofpollutants caused by Vehicle traffic accidents should immediatelyestablish interception pollutant dam, cut off the pollution of water bodies. Forsome difficult to dissolve in water, pollutant density is smaller than water, can takethe adsorption method. For the heavy metal pollutants can be removed by addingpowdered activated carbon or chemical methods. Once oil pollution incidents arising,first use booms isolate the contaminated area then apply other techniques to removeoil. Once human poisoning incidents arising, first response to water samples collectedand laboratory testing, then take measures to cut down the decomposition toxic andIncrease oxygen to the water, final do some later prevention. For Longhueutrophication, the first use of cyanobacteria algae dewatering equipment salvage andtake other biochemical measures to control the growth of algae.