高水力负荷对人工湿地处理精养虾塘排水效果的影响  

Effect of High Hydraulic Loading on Intensive Shrimp Aquaculture Wastewater Treatment Performance in Constructed Wetland

作　　者：李怀正[1] 章星异[1] 陈卫兵 叶剑峰[3] 

机构地区：[1]同济大学长江水环境教育部重点实验室,上海200092 [2]中国石油乌鲁木齐石化公司,乌鲁木齐830019 [3]上海市环境科学研究院,上海200233

出　　处：《环境科学》2012年第5期1597-1603,共7页Environmental Science

基　　金：上海市重大科技攻关项目(08dz1900406)

摘　　要：通过水平潜流人工湿地处理精养虾塘排水的中试试验,探讨了在不同高水力负荷条件下[1.10～5.34 m3.(m2.d)-1]人工湿地对有机物、氮磷以及悬浮物的去除效果,以期为其设计运行提供参考.结果表明,水力负荷与COD、TN、TP、SS的去除率呈负相关;COD、TN、SS去除速率随水力负荷的升高,先升后降,最高分别达到69、1.8和117.6 g.(m2.d)-1;TP的去除速率随水力负荷的升高变化并不明显.人工湿地在水力负荷2.52～3.24 m3.(m2.d)-1范围内运行时,污染物去除总量最高处理效果最佳.A pilot scale experiment of intensive shrimp aquaculture wastewater treatment using horizontal subsurface flow constructed wetland is carried out and the effect of treatment performance under high hydraulic loading conditions [1.10-5.34m3·（m2·d）-1] is investigated.The results show that,hydraulic loading and reduction efficiency of COD,TN,TP and SS is negatively correlated.However,with the hydraulic load increases,the removal rate of COD[up to 69g·（m2·d）-1],TN[up to 1.8 g·（m2·d）-1] and SS[up to 117.6 g·（m2·d）-1] first increased and then decreased,while the change of TP removal rate is not obvious.Therefore,under the range of 2.52 m3·（m2·d）-1 to 3.24 m3·（m2·d）-1 high hydraulic loading,constructed wetland shows best technically feasible for managing wastewater treatment of intensive aquaculture.

关 键 词：人工湿地 精养虾塘 水产养殖 水力负荷 基质拦截 去除速率 

分 类 号：X524[环境科学与工程—环境工程]