摘要
以棘洪滩水库2006—2011年水质监测数据为基础,根据质量守恒原理,建立水库的总磷完全混合模型,在稳态情况下反算出水库总磷的逐月沉降速率,结果表明:棘洪滩水库月平均沉降速率在3—8月为负值,以底泥解吸释放为主,而在9月至次年2月以底泥吸附沉淀为主。采用总磷预测模型和逐月沉降速率对棘洪滩水库2016年的月平均总磷浓度进行了预测计算,结果表明:当棘洪滩水库维持历年平均总磷负荷水平时,水库水质仍处于中营养状态;当总磷负荷增加1倍时,水库水质进入中—富营养过渡状态;当总磷负荷增加3倍时,水库水质将达到富营养状态。
According to mass conservation principle, we established the completely mixed model of total phosphorus on the base of the actual moni- toring material of Jihongtan reservoir in 2006 -2011, then total phosphorus settling rate month by month were back calculated. The results show that settling rate per month between March and August is negative, and its sediment desorption release mainly l but it is precipitation mainly be- tween the September and next February. We adopt the total phosphorus forecast model and settling rate month by month to forecast the average total phosphorus concentration per month in 2016. The results show that Jihongtan Reservoir is middle nutrition when it＇ s in the previous average total phosphorus load level. When Jihongtan Reservoir＇s total phosphorus is two times the nt^mbers of the previous average total phosphorus load level, there is the tendency of middle nutrition to eutrophication last but not the least. It＇s going to be eutrophication while Jihongtan Reservoir＇s total phosphorus is three times bigger than previous average total phosphorus load level.
出处
《人民黄河》
CAS
北大核心
2012年第12期81-83,87,共4页
Yellow River
基金
水利部公益性行业科研专项(200901063)
关键词
总磷负荷
总磷模型
沉降速率
富营养化
棘洪滩水库
total phosphorus load
total phosphorus mode
setting rate
eutrophication
Jihongtan Reservoir
