Huadong Eco-Environmental Engineering Research Institute of Zhejiang Province, Hangzhou, Zhejiang, China.
Power China Huadong Engineering Corporation Limited, Hangzhou, Zhejiang, China.
Water Environ Res. 2024 Sep;96(9):e11112. doi: 10.1002/wer.11112.
Root channel wetlands, as a new type of nature-imitating wetland system, provide a paradigm for micro-polluted water source purification; however, there is a knowledge gap on root channel wetlands' pollution removal effects and their main influencing factors after longtime operation. This study collected the turbidity, ammonia nitrogen (NH-N), total nitrogen (TN), total phosphorus (TP), permanganate index (COD), dissolved oxygen (DO), and chemical oxygen demand (COD) at the inlet and outlet of Shijiuyang (SJY) wetland and Guanjinggang (GJG) wetland in Jiaxing City, China, from 2019 to 2021. The results showed that root channel wetlands had better water quality improvement effects. The SJY wetland had larger removal rates for DO, COD, and turbidity compared with the GJG wetland. In contrast, other water quality indexes have similar removal rates at both wetlands. The influencing factor analysis showed that water purification agent, flow, pH, and water temperature have large influences on the removal rates of pollutants for both wetlands. To address high turbidity and excessive DO, which are the primary pollutants affecting the two wetlands, implementing the diversion river before the pretreatment area and incorporating ecological floating beds in the deep purification area are recommended solutions to mitigate these issues. Compared with conventional general constructed wetlands, root channel wetlands are a more cost-effective and sustainable technology. The research is conducive to improving understanding of root channel wetland purification for micro-polluted water sources and enhancing water supply security capability in the plains water network area of the Yangtze River Delta region. PRACTITIONER POINTS: Compared with conventional general constructed wetlands, root channel wetlands are more cost-effective and sustainable technology. The SJY wetland demonstrated better removal rates for DO, CODMn, and turbidity, indicating a higher purification capacity compared to GJG wetland. Flow rate and pH are the primary factors influencing the GJG wetland, while the waterpurification agent and water temperature are the main factors affecting water quality in the SJY wetland.
根孔湿地作为一种新型的仿自然湿地系统，为微污染水源净化提供了范例；然而，关于根孔湿地长时间运行后的除污效果及其主要影响因素，仍存在知识空白。本研究于 2019 年至 2021 年期间，采集了中国嘉兴市石臼漾（SJY）湿地和贯泾港（GJG）湿地的进出水浊度、氨氮（NH-N）、总氮（TN）、总磷（TP）、高锰酸盐指数（COD）、溶解氧（DO）和化学需氧量（COD）。结果表明，根孔湿地具有更好的水质改善效果。SJY 湿地对 DO、COD 和浊度的去除率大于 GJG 湿地。相比之下，其他水质指标在两个湿地中的去除率相似。影响因素分析表明，水净化剂、流量、pH 值和水温对两个湿地的污染物去除率均有较大影响。为了解决高浊度和过量 DO 这两个影响两个湿地的主要污染物，建议在预处理区前实施引水工程，并在深度净化区采用生态浮床。与传统的通用人工湿地相比，根孔湿地是一种更具成本效益和可持续性的技术。该研究有助于提高对微污染水源根孔湿地净化的认识，增强长三角平原水网地区的供水安全能力。
该译文仅供参考，如果你需要更准确的翻译，请提供更多信息。
