摘要
复合垂直流人工湿地系统(IVCW)堵塞后其水力特征会发生变化,通过示踪剂对小试和中试系统堵塞前后的水力特征进行了研究。结果表明,堵塞后IVCW出水流量减小,小试系统实际停留时间由堵塞前21.3h延长至32.5h,中试系统实际停留时间从19.4h延长至26.8h。IVCW堵塞后容易造成下行池表面积水,既恶化了卫生条件又降低了系统的处理能力。
Variation in the hydraulic characteristics of integrated vertical flow constructed wetland (IVCW) will occur after it is clogged. Study was made by using tracer on the hydraulic characteristics of small-scale test system and pilot-scale system before and after their clogging. The result indicated that the outflow from IVCW is decreased when it is clogged. In the small-scale system, the hydraulic retention time (HRT) is extended from 21.3 h to 32.5 h, and in the pilot-scale system HRT is extended form 19.4 h to 26.8 h. The clogging of IVCW will result in free water (water log) on the surface of down-flow chamber, which will not only deteriorate the sanitary condition but also decrease the treatment capacity of the system.
出处
《中国给水排水》
CAS
CSCD
北大核心
2003年第2期1-4,共4页
China Water & Wastewater
基金
国家杰出青年基金项目(39925007)
中国科学院知识创新工程重要方向项目(KSCX2-SW-102)
