CAJ | 학술논문

南水北调工程山东沿线分布多个大中小城市,为保证东线的水质,其处理后的生活和工业中水不能直接输入河道,宝贵的再生水资源不应成为工程的负担而应作为改善当地自然生境的重要来源.结合平阴湿地实际情况,采用MIKE 21模型对湿地示范区进行了二维水动、水质模拟,给出了水体中污染物随时间和空间迁移变化规律,分析了湿地在改善当地水环境方面的作用.研究在湿地原始条件下设计了两种改进方案,分别模拟了两种方案的降解率.结果表明,通过对湿地的改造,使中水在湿地中的滞留时间从11 d增加到13 d,COD_(cr)的综合降解率从3.42%增加到5.29%.平阴湿地具有良好的水环境改善效果,对南水北调沿线区域的生态恢复具有重要的示范意义.
남수북조공정산동연선분포다개대중소성시,위보증동선적수질,기처리후적생활화공업중수불능직접수입하도,보귀적재생수자원불응성위공정적부담이응작위개선당지자연생경적중요래원.결합평음습지실제정황,채용MIKE 21모형대습지시범구진행료이유수동、수질모의,급출료수체중오염물수시간화공간천이변화규률,분석료습지재개선당지수배경방면적작용.연구재습지원시조건하설계료량충개진방안,분별모의료량충방안적강해솔.결과표명,통과대습지적개조,사중수재습지중적체류시간종11 d증가도13 d,COD_(cr)적종합강해솔종3.42%증가도5.29%.평음습지구유량호적수배경개선효과,대남수북조연선구역적생태회복구유중요적시범의의.
There are many cities along the Shandong South-to-North water transfer project, in order to ensure the water quality, the domestic and industrial water which have been treated can't be discharged into the river directly.The renewable water resources shouldn't be the burden of the project and may be used to improve the local habitats.In this study, combined with the actual situation of Pingyin Wetland of Shandong province, we used MIKE21 model to simulate flow filed and water quality for marsh.Contaminants transfer characteristics over time and space variation were obtained and the function of wetlands in improving the local water environment was analyzed.The study planned two improved cases under primitive conditions of wetlands, and simulated the degradation rate of two cases.The results show that the retention time of water in the wet-lands increased from 11 days to 13 days, and CODcr overall degradation rate increased from 3.42% to 5.29% by transformation of wetlands.Pingyin wetland case shows good effect for improvement water environment, and could provide reference for ecological restoration along the re-gion of Shandong South-to-North water transfer project.