沙湖水体污染现状及对策分析

Analysis on Current Pollution Situation and Control Countermeasures for Shahu Lake

本文对沙湖水体营养盐来源进行了调查分析,结果表明:①黄河水、农田退水的补给是沙湖营养盐的主要来源;②2004年由黄河水补给入湖的总氮、总磷量分别为20.00t和3.04t,占全年入湖总氮、总磷量的50.4%和57.7%;③2004年由农田退水补给入湖的总氮、总磷量分别为15.00t和2.00t,占全年入湖总氮、总磷量的37.8%和37.9%;④2004年由芦苇收割和渔业捕捞出湖的总氮、总磷量分别为11.99t和1.93t,占全年入湖总氮、总磷量的30.2%和36.6%;在调查沙湖营养来源的基础上,建立沙湖水质经验模型并分别对模型进行验证,结果表明,OECD模型能较好预测沙湖水体总磷、总氮浓度。最后利用该模型,对所提出的沙湖水体富营养化防治方案进行计算分析比较,并确定合适的防治方案。

The pollution sources for Shahu Lake were investigated and analyzed in detail in this paper.The resultswere shown as follows:① The Yellow river waste water and the surface runoff to the Shahu Lake were the two main pollution sources.② 20.00tons of total nitrogen and 3.04tons of total phosphors from Yellow river flowed into Shahu Lake in 2004 which occupied 57.7% of the total phosphorsand 50.4% of total nitrogen flowed into t Shahu Lake.③15.00tons of total nitrogen and 2.00tons of total phosphors in the farm...