水平潜流和垂直流湿地处理蓟运河水的效果比较  

Comparison between Horizontal Subsurface-flow and Vertical-flow Constructed Wetlands for Treatment of Jiyun River Water

作　　者：肖宇芳[1] 王文忠[1] 王文[1] 王志广[1] 刘景彬[2] 张杰[2] 

机构地区：[1]天津市环境保护科学研究院,天津300191 [2]天津市滨海水业集团有限公司,天津300381

出　　处：《中国给水排水》2010年第7期12-15,共4页China Water & Wastewater

摘　　要：为了改善蓟运河的水质,使其达到《地表水环境质量标准》(GB 3838—2002)中的Ⅳ类水质标准,在蓟运河北岸的空地上构建了水平潜流人工湿地和垂直流人工湿地,研究了其对河水的净化效果。为防止浮游藻类堵塞填料床,原水在进入人工湿地前先经加药气浮工艺预处理,当PAC的投加量为50 mg/L时,水平潜流人工湿地对COD、BOD5、SS、TN、NH3-N、TP的去除率分别为65%、50%、100%、70%、90%和65%,垂直流人工湿地对COD、BOD5、SS、TN、NH3-N、TP的去除率分别为45%、70%、100%、65%、95%、85%。两种人工湿地的出水水质均可以达到Ⅳ类标准,但考虑到冬季低温时,垂直流人工湿地的填料床极易发生冰冻的现象,所以建议采用水平潜流人工湿地处理蓟运河水。To improve the water quality of Jiyun River to class IV criteria specified in Environmental Quality Standards for Suorace Water （ GB 3838 - 2002 ）, horizontal subsurface-flow and vertical-flow constructed wetlands were built on empty area in the north bank of Jiyun River to investigate the purification effect. The raw water from Jiyun River was pretreated by air flotation before entering the system to prevent phytoplankton clogging the packed bed. When PAC dosage is 50 mg/L, the removal rates of COD, BOD5, SS, TN, NH3 -N and TP in the horizontal subsurface-flow constructed wetland are 65%, 50%, 100%, 70%, 90% and 65% respectively, and those in the vertical-flow constructed wetland are 45%, 70%, 100%, 65%, 95% and 85% respectively. The effluent quality of both constructed wetlands can reach the class Ⅳ criteria. However, considering that the packed bed of vertical-flow constructed wetland freezes during winter, the horizontal subsurface-flow constructed wetland is suggested to treat Jiyun River water.

关 键 词：水平潜流人工湿地 垂直流人工湿地 蓟运河 气浮 

分 类 号：X703[环境科学与工程—环境工程]