大连市英那河水库库区污染源清理及效果

目的探讨水库库区污染源清理的方法和效果.方法于2002年对大连市英那河水库库区的猪圈、牲口圈、厕所、院坑、坟墓等污染源清理后,计算污染源面积,采集清理后未消毒的土壤样品,用生石灰或漂白粉消毒后的土壤样品.按照GB 7959-1987<粪便无害化卫生标准>进行评价.结果每座牲口圈、猪圈、厕所、禽舍、院坑、坟墓的污染源面积分别为77.4、74.2、31.7、32.1、36.3、158.5 m2.选用生石灰和漂白粉进行消毒.猪圈污染源清理后未消毒和清理清理后消毒的土壤样品大肠埃希菌值、蠕虫卵合格率分别为85.94%和90.31%,96.88%和99.38%.消毒前后的土壤样品大肠埃希菌值合格率(x2=11.58,P＜0.005)、蠕虫卵合格率(P＜0.005)差异均有统计学意义.库区各类污染源清理后消毒的土壤样品大肠埃希菌值(95.78%)和蠕虫卵合格率(99.85%)接近库区山坡荒地土壤对照样品(大肠埃希菌值和蠕虫卵合格率均为100%).结论库区污染源采取清理与药物消毒联合应用,能够保障污染源清理达到清洁土壤的卫生指标.

The Effect Analysis of Pollution Sources Clearance in Yingnahe Reservoir Area in Dalian

Objective To evaluate the method and result of pollution sources clearance in the reservoir area. Methods Calculated the areas of pollution sources such as pigsties, livestock barns, lavatories, holes for sewage and tombs in the reservoir area of the Yingnahe River, Dalian City after cleared them up in 2002. Collected the soil samples which were not disinfected after clearing up, and the samples disinfected with quicklime or bleaching powder. Evaluation was done according to the GB7959-1987 Standard for the Non-hazardous Treatment of Night Soil. Results The area of pollution source of each livestock barn, pigsty, lavatory, birdhouse, hole for sewage, tomb was 77.4, 74.2, 31.7, 32.1, 36.3 and 158.5 m2 respectively. The qualification rates of the E.coli and the egg of worm counts in the soil samples collected from pollution sources of pigsties disinfected and not disinfected after clearance were 85.94%, 90.31% and 96.88%, 99.38% respectively, the differences were significant. The qualification rates of the E.coli(95.78%)and the egg of worm(99.85%)in the disinfected soil samples collected from the pollution sources in the reservoir area after clearance were close with that of the control collected from the hillside wasteland in the reservoir area. Conclusion Clearance combined with disinfection can make the clearance of pollution sources in the reservoir area meet the request of related standard.