休闲渔业养殖小区废水治理技术与工程实例

Treatment Technology of Leisure Fishery Breeding Wastewater and Engineering Cases

密云水库是北京重要的水源地,取消网箱养鱼后水库周边的休闲渔业养殖小区成了农民致富的新途径,但其排放的养殖废水和生活污水对水库水质构成了新威胁。根据休闲渔业养殖小区的特点,从工艺设计角度就渔业养殖废水的处理工艺研究进展、工程实例及其运行情况进行了分析。结果表明,生活污水净化沼气池/人工湿地处理技术对渔业养殖小区主要水污染物SS、COD、TN、TP的去除率均可达到90%以上,该工艺可以保证出水达标排放,是适合休闲渔业养殖小区水污染治理的工艺。

The Miyun Reservoir is the most important water source of Beijing. After cancelling cage culture, the leisure fishery breeding around the Miyun Reservoir has become a new way to increase farmers＇ income. The aquaculture wastewater and domestic sewage discharged from leisure fishery pose a new threat to the reservoir. According to the characteristics of leisure fishery breeding, the progress of aq- uaculture wastewater treatment technology, engineering cases and their operation were analyzed in terms of treatment process design. The results indicate that the removal rates of SS, COD, TN and TP can all reach more than 90% by the combined process of sewage methane-generating pits and constructed wetland. The process can ensure that the effluent meets the standard discharge, and is suitable for treatment of wastewater from leisure fishery breeding.