Wastewater samples (1 litre/sample) were collected from
wastewater drainage of many restaurants and canteen at five
districts (Ninhkieu, Binhthuy, Cairang, Omon and Thotnot) of
Can Tho city, Vietnam from 10°01’57'’ N and from
105°47'03’’ E. (Figure 1). After collection, the samples were
transferred immediately to the laboratory and they were
stored at 5oC.