Water quality and parasites biodiversity in treated wastewater

The present study aims to evaluate the performance of Helwan wastewater treatment plant. Cairo, Egypt with parasites biodiversity. The study included water quality after treatment and the occurrence of parasites. The treated wastewater [tww] samples were monthly obtained as well as tap water was monthly examined for water quality parameters. Diagnosis of parasite eggs and larvae were also achieved. The results showed that, the plysico-chemical parameters value were markedly higher in tww compared to tap water. Entamoeba histolytica cysts and Ascaris eggs were detected during all the time of examination. Coccidia oocysts and nematode larvae were recorded during June to August. Fasciola encysted metacercariae were also detected and for the first time during September to March. At the same time tap water samples were free from such parasites

Health aspects of fish cultured in reused wastewater with special reference to parasitic infestation

The present study aims to evaluate the application of recycled treated wastewater [tww] on fish culturing with special reference to productivity and health aspects. Samples of treated wastewater were monthly obtained, from Helwan wastewater treatment plant. Cairo, Egypt. The collected water samples were subjected to be used in laboratory fish culture. Growth and productivity of cultured fingerlings Oreochromis niloticus, reared in tww compared with that reared in dechlorinated tap water were recorded. Statistical analysis revealed no significant monthly changes in body weight, length and width between fingerlings cultured in tap water and tww Parasitological examination of fingerlings reared in tww revealed that only the skin and gills were affected by ptotozoan infection. At the same time fingerlings cultured in tap water were found free from parasites