磷矿区新建水库的富营养化趋势与防治

９０年代中期，开始对四川德阳市清平水库修建后的富营养化可能性及防治进行预研究。对水库修建河段设四个断面进行连续５个月水质监测，表明河水中ＴＰ浓度高。对水库蓄水初期的ＴＰ时空水质预测模型和参数率定工作进行了深入的探讨。用模型对大欠坪坝址和枇杷岩两个坝址建库的水质进行了模拟预测，发现两个坝址修建水库的水质都将超过过湖库水质标准，并有可能发生富营养化，其中，大欠坪坝址可以通过防治措施防止水库富营养化，而

Entrophication Trend and Counteimeasures ofN ewly-built Reservoir on the PhosphoricM ineralArea

A preliminary study on the possible eutrophication and countm easures of Q iigpin Reservoir Deyang city, Sichuan Province, was carried out since 1990s.In this paper the data from four m onitoring river cross-sections in five continuous months showed that the concentration of TP is very high, up to 0.193-0.554m g°L^-1.The temporal and spatial distribution model of TP during initial stage of reservior operation, and method ofdefiniig parameters of model is discussed The model is applied to simulate the change of TP concentration during the initial stage ofQ inpin Reservior operation for two possible dams of Daqianpiig andPibayan.The smulated results showed that the concentration of TP exceeds standard ofwater quality for both dams, 0.042m g°L^-1 for the dam ofD aqianpiig, and 0.082mg°L^-1 for the dam of Pibayan, respectively.Hence the eutrophication will probably occur in Qinping Resevior after operation StilJ the eutrophication for Daqianpiig Dam would possibly be controlled conditioning some countermeasures be takein while that for Pbayan Dam would not under present sc-technical conditions