杭州市水域的磷污染与禁限含磷洗涤剂的响应关系研究

以拥有中国典型城市湖泊——西湖的杭州市作为研究对象,计算了含磷洗涤剂的磷负荷贡献率,分析了禁磷前后城市内河和西湖水体中磷负荷浓度的变化行为。研究结果表明,洗涤剂中磷酸盐磷占杭州市生活污水中总磷负荷的30.7%,实施禁磷后钱塘江和运河中磷负荷有不同程度的降低,但西湖水体的磷负荷变化不明显。从而可以认为,在杭州市实施禁磷可以作为控制水体富营养化的一个辅助手段,可以遏制水体进一步恶化。而全面消除水体富营养化还需建设城市三级污水处理厂、控制面源污染等其它手段的协作才能实现。

Study On Relationship Between Eutrophication in Water and Prohibition From Using Phosphorous Detergent in Hangzhou China

Contribution of phosphorus in detergent to phosphorus in rivers and West Lake of Hangzhou city was analyzed.The results showed that 30.7% of phosphorus in domestic sewage is from phosphorus detergent. Concentration of phosphorus in Qiantang river and Yun river decreased to some extend after phosphorus detergent was prohibited from using in Hangzhou.However,changes of phosphorus concentration was not marked in West Lake.It can be said that prohibit from using phosphorous detergent is an assistant way to control eutrophication of water in Hangzhou,which helps to keep water from worse polluted.Eutrophication can only be avoid by all means including tertiary treatment of municipal wastewater and controlling non-spot pollutions.