Thirkell D, Thakker B, Clark L S, Armitt I
Antonie Van Leeuwenhoek. 1985;51(1):71-8. doi: 10.1007/BF00444230.
During the passage of sewage through a typical treatment plant employing biological filter beds and operating under dry weather flow conditions, about 7% of the input of anaerobic organisms survive to be released in the effluent. The greatest fall in numbers occurs in the first of two primary settling tanks operating in series and during passage through the filter beds. The predominant organisms were Bacteroides species, gram-positive cocci and clostridial species. There is no significant difference in the rate of survival of any of the genera through the different stages of treatment.
在污水通过采用生物滤床且在旱季流量条件下运行的典型处理厂的过程中，约7%的厌氧生物输入量能够存活下来并随出水排放。数量下降幅度最大的阶段是在串联运行的两个初级沉淀池中的第一个以及通过滤床的过程中。主要的生物种类为拟杆菌属、革兰氏阳性球菌和梭菌属。在处理的不同阶段，任何一个属的生物存活速率均无显著差异。
