硫铁矿对垂直潜流人工湿地脱氮除磷效果影响研究  

Study on Effect of Pyrite on Nitrogen and Phosphorus Removal in Vertical-flow Subsurface Constructed Wetland

作　　者：钟淑欢 叶环勇 孙冰 林静 Zhong Shuhuan;Ye Huanyong;Sun Bin;Lin Jing(Shenzhen Biyuan Environmental Protection Technology Co.,Ltd.,Shenzhen 518029,China)

机构地区：[1]深圳市碧园环保技术有限公司,广东深圳518029

出　　处：《广东化工》2025年第5期118-121,103,共5页Guangdong Chemical Industry

基　　金：深圳市承接国家重大科技项目(CJGJZD20200617102602007)。

摘　　要：为提高人工湿地的同步脱氮除磷效能,本论文构建了以沸石、硫铁矿、石灰石为主要填料的垂直流人工湿地,对达到一级A排放标准的污水处理厂尾水进行深度处理,探究其对TN、TP、氨氮的去除机理及去除规律,同时探究HRT、外加碳源及不同电子供体等因素对反硝化程度的影响。结果表明,相比空白对照组,大量添加硫铁矿的装置#4在尾水处理中表现出较好的脱氮除磷性能,TN平均去除率为54.91%、TP平均去除率达64.04%、氨氮平均去除率达77.31%。研究表明,硫铁矿在垂直流人工湿地中发挥了同步脱氮除磷作用,而且作为人工湿地基质不存在重金属释放的二次污染风险,在低碳氮比、高氮磷的污水深度脱氮除磷中具有良好的应用前景。In order to improve the efficiency of simultaneous nitrogen and phosphorus removal of constructed wetlands,this paper constructed A vertical flow constructed wetland with zeolite,pyrite and limestone as the main fillers,conducted in-depth treatment on the tailwater of the sewage treatment plant that met the first-class A discharge standard,and explored its removal mechanism and rule of TN,TP and ammonia nitrogen.At the same time,the influence of HRT,additional carbon source and different electron donors on denitrification degree was explored.The results showed that compared with the blank control group,the device#4 with large amount of pyrite added showed better nitrogen and phosphorus removal performance in the tail water treatment,with the average TN removal rate reaching 54.91%,the average TP removal rate reaching 64.04%and the average ammonia nitrogen removal rate reaching 77.31%.The results show that pyrite plays a role in simultaneous nitrogen and phosphorus removal in vertical flow constructed wetlands,and as a matrix of constructed wetlands,there is no secondary pollution risk of heavy metal release,and it has a good application prospect in the deep nitrogen and phosphorus removal of wastewater with low carbon nitrogen ratio and high nitrogen and phosphorus.

关 键 词：垂直流人工湿地 硫铁矿 脱氮除磷 尾水深度处理 

分 类 号：X52[环境科学与工程—环境工程]