【摘要】 由于城市化的加剧导致水体富营养化程度日益增加,对水体生态系统的结构和功能产生了显著影响,因此改善和修复富营养化水体对水环境保护具有重要意义。利用农业区内废弃的养殖塘,构建湿地塘处理直湖港支流富营养化河道,探讨了该措施对水体中氨氮(NH3-N)、总氮(TN)、总磷(TP)及高锰酸盐指数的季节性去除效果。工程运行结果表明:湿地塘对NH3-N的去除率,夏季为74.2%~84.6%,秋季为75.1%~83.6%,冬季为36.9%~45.2%;对TN的去除率,夏季为68.0%~75.0%,秋季为70.4%~74.3%,冬季为39.0%~48.5%;对TP的去除率,夏季为57.1%~63.7%,秋季为55.4%~67.4%,冬季为40.7%~53.1%;对高锰酸盐指数的去除率,夏季为49.3%~54.7%,秋季为44.9%~57.5%,冬季为36.1%~43.9%。以上结果说明,通过深度及结构控制构建的湿地塘对河水中产生富营养化的水质具有较好的处理效果。更多还原

【Abstract】 Due to increasing eutrophication degree aroused by increased urbanization,there is a significant influence on the aquatic ecosystem structure and function,thus improving and remediating the quality of water bodies is of great significance to the protection of water environment.The abandoned breeding ponds in agricultural areas were used,to construct wetland pond for treatment of eutrophication channel along tributaries of straight lake port,and seasonal removal effects of the ammonia nitrogen(NH3-N),total nitrogen(TN),total phosphorus(TP) and chemical oxygen demand(CODMn) in water were discussed.The results of engineering operation show that the removal rate of NH3-N in wetland ponds was 74.2%~84.6% in summer,75.1%~83.6% in autumn and 36.9%~45.2% in winter.The removal rate of TN was 68.0%~75.0% in summer,70.4%~74.3% in autumn and 39.0%~48.5% in winter.The removal rate of TP was 57.1%~63.7% in summer,55.4%~67.4% in autumn and40.7%~53.1% in winter.The removal rate of CODMnwas 49.3%~54.7% in summer,44.9%~57.5% in autumn and 36.1%~43.9%in winter.The above results show that the wetland ponds constructed with depth and structure control have a good effect on the eutrophication treatment in the river.更多还原