BIOLOGICAL EVALUATION OF SOME DOMESTIC WASTEWATER TREATED WITH COAGULANT AND FLOCCULENT USING WHITE NEW ZEALAND MALE RABBITS | ||||
| Journal of Biological Chemistry and Environmental Sciences | ||||
| Volume 3, Issue 2, June 2008, Page 27-43 PDF (418.8 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/bces.2008.431576 | ||||
 View on SCiNiTO | ||||
| Abstract | ||||
| A total of 18 domestic wastewater samples were taken from three different domestic wastewater treatment plants (Helwan, Zenin, and Gabal El Asfar) were treated using Coagulant (FeCl3) and Flocculent (polymer). Contaminants in domestic wastewater [Suspended Solids (SS), Organic Matters (COD or BOD5), Nutrients (TN+TP) and Heavy Metals] were classified into dissolved and suspended. From our previous work on the some wastewater, each domestic wastewater sample was treated using six different chemical treatments. Upon the chemicals analysis of the resultant water the best treatment was chosen as drinking water for animals in this study relative to tap water. All these contaminants were removed by coagulation/sedimentation. Results of analysis of domestic wastewater showed a great reduction after the chemicals treatment. Also, the microbiological test against total Coliform and E. coli showed a great reduction after treatment expressed as number of colonies per cubic centimeter. A total number of 64 white New Zealand male rabbits were used to biologically examine the drinkability of the treated wastewater without any adverse effects. Hematological and biochemical relevant parameters of white New Zealand male rabbits as affected by drinking wastewater treated with coagulant (FeCl3) and flocculent (polymer) were in the normal physiological range without no obvious change. No significant BIOLOGICAL EVALUATION OF SOME DOMASTIC WASTEWATER 28 changes in liver and kidney functions of the rabbits except a slight elevation in blood plasma creatinine in the fourth group (Gabal El Asfar treated wastewater). Weight gain, Feed conversion, and Feed efficiency did not significantly change among experimental groups. Slight increase in feed consumption in the rabbits drinking Gabal El Asfar treated wastewater and slight decrease in feed consumption in the rabbits drinking Helwan treated wastewater. The study showed the drinkability of domestic wastewater treated with the recommended doses (10-20 ppm FeCl3 + 5-15 ppm cationic polymer + 5 ppm Cl2) of coagulant and flocculent in this research without any adverse effects on rabbits. | ||||
| Keywords | ||||
| Keywords: domestic wastewater; heavy metal; dissolved matter; suspended solids; biological evaluation; rabbits | ||||
|
Statistics Article View: 51 PDF Download: 16 |
||||
