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本文调查了作为灌溉用的城市污水中的粪大肠菌含量和沙门氏菌的污染情况。灌溉污水中粪大肠菌群数绝大部分样品在10~7～10~8个/升。沙门氏菌数为10~2～>2×10~3个/升。沙门氏菌以B群最多(占52.4%),其次为E_1群(38.6 %),菌型分布以阿哥纳沙门氏菌最多,其次为纽兰、伦敦、德比等。沙门氏菌的检出率随水中粪大肠菌群数的减少而降低,两者成正相关,当水中粪大肠菌群数在10~4个/升时,沙门氏菌的检出率只有12.5%。
This article investigated the fecal coliform content and salmonella contamination of municipal wastewater used for irrigation. The vast majority of fecal coliform bacteria in the irrigation wastewater were in the range of 10-7 to 10-8 per liter. The number of Salmonella is 10 ~ 2 ~> 2 × 10 ~ 3 / L. Salmonella was the most abundant in group B (accounting for 52.4%), followed by E_1 (38.6%). The most common strains were Salmonella argonae, followed by Newland, London and Derby. The detection rate of Salmonella decreased with the reduction of fecal coliform in water, which was positively correlated with the detection rate of Salmonella only 12.5% when the number of fecal coliform in water was 10 ~ 4 / L.