农村生活污水中氮磷去除及资源化利用研究

Research on nitrogen and phosphorus removal and resource utilization in rural domestic wastewater

本文以水生植物为研究对象,分析了不同水生植物对农村生活污水中氮磷去除的效果。研究结果表明,单一水生植物和混合种植水生植物均具有良好的水体净化效果,可以去除水体中90%以上的氮磷。单一水生植物中,再力花、蒲草等挺水植物对污水中氮素的吸收效果最佳,沉水植物苦草对污水中磷的净化效果最佳。除了水生植物和底泥对污水中氮磷的吸收作用外,水生植物生长所产生的碳源有利于微生物的活动和生长,而微生物对污水中氮磷的去除效果也具有重要影响。

This study focuses on aquatic plants and evaluates their efficacy in nitrogen and phosphorus removal from rural domestic wastewater.Findings suggest that both monoculture and mixed-culture of aquatic plants exhibit effective water purification,achieving a removal rate of over 90% for nitrogen and phosphorus.Among monoculture systems,emergent plants like Thalia dealbata and Typha orientalis demonstrate superior nitrogen uptake,while submerged plants like Vallisneria natans are effective in phosphorus purification.In addition to the absorption of nitrogen and phosphorus by aquatic plants and sediment,the carbon sequestration by aquatic plants supports microbial activity and growth,which significantly influences the efficiency of nitrogen and phosphorus removal in wastewater.