水生植物种植对小哑叭河洪水入库水质影响研究

Study on the influence of aquatic plant planting on the water quality of flood storage in Xiaoyaba River

大宁调蓄水库库北小哑叭河平时无水,在汛期常常出现雨洪水汇流入库,但汇水水体由于夹杂草木和部分生活污水,水质较差,影响了库区水质安全。为解决此问题,尝试在河流入库口处种植水生植物,使河水经水生植物处理后再入库,以期改善入库水质。通过对比分析2019年汛期4次小哑叭河汇流入库雨洪水水质和水库水质变化情况,以及2019年种植水生植物与2018年未种植水生植物库区水质数据,发现大宁调蓄水库库北水生植物的种植对于水库水质保护有积极作用,水生植物种植对总氮含量有较为明显的降低效果。其经验可为其他类似水库提供参考。

The Xiaoyaba River in the north of Daning Reservoir usually has no water,and rain and flood often converge into the reservoir during the flood season,however,the water quality of the collecting water body is poor because of the inclusion of vegetation and some domestic sewage,which affects the water quality safety of the reservoir area.To solve this problem,we try to plant aquatic plants at the entrance of the river,so that the river water can be treated by aquatic plants before being put into storage,in order to improve the quality of the incoming water.By comparing and analyzing the changes of water quality of rain and flood in the confluence of Xiaoyaba River in 2019,and the water quality data of the reservoir area where aquatic plants were planted in 2019 and no aquatic plants were planted in 2018,it was found that the planting of aquatic plants in the north of Daning Reservoir has a positive effect on the water quality protection of the reservoir,and the planting of aquatic plants has an obvious reduction effect on the total nitrogen in the reservoir area.Its experience can provide reference for other similar reservoirs.