Distribution of sewage indicated by Clostridium perfringens at a deep-water disposal site after cessation of sewage disposal
Distribution of sewage indicated by Clostridium perfringens at a deep-water disposal site after cessation of sewage disposal
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DOI：
10.1128/aem.62.5.1741-1746.1996
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发表时间：
1996-05-01
影响因子：
4.4
通讯作者：
Colwell, RR
中科院分区：
文献类型：
--
作者：
Hill, RT;Straube, WL;Colwell, RR
产气荚膜梭菌，生活污水污染的标志，列举了从附近的106英里的网站1个月和1年后，在这个网站的污水处理停止沉积物样品。C.在处置场和从26海里（约100公里）的站点收集的沉积物中的产气荚膜杆菌计数。48公里）和50海里（约。92公里）的西南部的网站，一般来说，超过10倍以上的计数从一个未受污染的参考网站，C。1992年和1993年之间，处置地点的产气荚膜杆菌数量没有显著差异，表明污水污泥仍然留在该地点的底栖环境中。在C.产气荚膜杆菌计数升高（即，除了参考站以外的其他站），计数通常在顶部1 cm处较高，并下降到5 cm。在某些情况下，C.在底部4或5 cm处的产气荚膜杆菌计数显示1993年比1992年更高的趋势，表明生物扰动。我们的结论是，广泛的污泥污染的底栖环境已经持续了至少1年后，停止在106英里的网站的海洋污水处理。
Clostridium perfringens, a marker of domestic sewage contamination, was enumerated in sediment samples obtained from the vicinity of the 106-Mile Site 1 month and 1 year after cessation of sewage disposal at this site. C. perfringens counts in sediments collected at the disposal site and from stations 26 nautical miles (ca. 48 km) and 50 nautical miles (ca. 92 km) to the southwest of the site were, in general, more than 10-fold higher than counts from an uncontaminated reference site, C. perfringens counts at the disposal site were not significantly different between 1992 and 1993, suggesting that sewage sludge had remained in the benthic environment at this site. At stations where C. perfringens counts were elevated (i.e., stations other than the reference station), counts were generally higher in the top 1 cm and decreased down to 5 cm. In some cases, C. perfringens counts in the bottom 4 or 5 cm showed a trend of higher counts in 1993 than in 1992, suggesting bioturbation. We conclude that widespread sludge contamination of the benthic environment has persisted for at least 1 year after cessation of ocean sewage disposal at the 106-Mile Site.