Crumb rubber filtration: A potential technology for ballast water treatment

被引:57
作者
Tang, Zhijian
Butkus, Michael A.
Xie, Yuefeng F.
机构
[1] Penn State Univ, Environm Engn Program, Middletown, PA 17057 USA
[2] US Mil Acad, Dept Geog & Environm Engn, West Point, NY 10996 USA
基金
美国海洋和大气管理局;
关键词
ballast water; crumb rubber; filtration; invasive species; phytoplankton; scrap tires; zooplankton;
D O I
10.1016/j.marenvres.2005.06.003
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The removal of turbidity, particles, phytoplankton and zooplankton in water by crumb rubber filtration was investigated. A substantial reduction was achieved. Of the three variables, filter depth, media size and filtration rate, media size had the most significant influence. Smaller media size favored higher removal efficiency of all targeted matter. There was no apparent relationship between removal efficiency and filter depth. Higher filtration rate resulted in lower removal efficiency and higher head loss. Compared with conventional granular media filters, crumb rubber filters required less backwash, and developed lower head loss. Consequently crumb rubber filters could be run for a longer time or allow a higher filtration rate. The results also indicate that the crumb rubber filtration alone did not achieve the target removal of invasive species. However, crumb rubber filtration could potentially be used as a primary treatment technology to enhance the efficiency of a secondary treatment process (e.g., disinfection). (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:410 / 423
页数:14
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