CAJ | 학술논문

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、BOD_5、SS、TN、NH_3-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、BOD_5、SS、TN、NH_3-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.
위료개선계운하적수질,사기체도<지표수배경질량표준>(GB 3838-2002)중적Ⅳ류수질표준,재계운하북안적공지상구건료수평잠류인공습지화수직류인공습지,연구료기대하수적정화효과.위방지부유조류도새전료상,원수재진입인공습지전선경가약기부공예예처리,당PAC적투가량위50 mg/L시,수평잠류인공습지대COD、BOD_5、SS、TN、NH_3-N、TP적거제솔분별위65%、50%、100%、70%、90%화65%,수직류인공습지대COD、BOD_5、SS、TN、NH_3-N、TP적거제솔분별위45%、70%、100%、65%、95%、85%.량충인공습지적출수수질균가이체도Ⅳ류표준,단고필도동계저온시,수직류인공습지적전료상겁역발생빙동적현상,소이건의채용수평잠류인공습지처리계운하수.
To improve the water quality of Jiyun River to class Ⅳ criteria specified in Environmental Quality Standards for Surface 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, BOD_5, SS, TN, NH_3-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.