医院污水在排放前一般需经过处理,处理后的污水如不能保持足够的余氯,虽然大肠菌群已无法检出,但仍有一定量的病毒和沙门氏菌存在。沙门氏菌的数量大大减少,且受外环境不良因素的影响而遭受亚致死性损伤,给常规的检测带来一定的困难。本 The hospital effluent generally needs to be treated before it is discharged. If the treated effluent can not maintain sufficient residual chlorine, a certain amount of virus and salmonella still exist although the coliform bacteria can no longer be detected. The number of Salmonella greatly reduced, and suffers from sublethal damage due to adverse environmental factors, bringing certain difficulties to routine testing. this