STABILITY INDEX OF THE TREATED WATER FROM ALKARKH AND AL-RASHEED WATER TREATMENT PLANTS IN BAGHDAD CITY
Main Article Content
Abstract
An analysis was performed on the treated water from two water treatment plants in Baghdad
city. This analysis was used to evaluate the stability of the treated water from these plants and
that will flow in the distribution system to consider its corrosivity. The variation in water
stability with time and distance from the north to the south of Baghdad was indicated. The
analysis showed that the flowing water in the distribution system in Baghdad is corrosive to very
corrosive water by calculating Ryznar stability index (RI). In Al- Karkh WTP in the north, RI
maximum ranged between 7.958 to 9.403 where RI minimum ranged between 7.03 to 7.915.
Where in the south Al-Rasheed WTP, RI maximum ranged between 7.119 to 8.63 and RI
minimum ranged 6.679 to 7.994. The corrositivity of water decreased in the water flowing down
stream. The water quality parameters affecting RI was discussed which were calcium, alkalinity,
total dissolved solids and pH.
Article Details
Section
How to Cite
References
- Al Stone, Dimitris Spyridakis, Mark Benjamin, John Ferguson, Steve Reiber, and Stein Osterhus. (1987). The Effects of Short Term Changes in Water Quality on Copper and Zinc Corrosion Rates. AWWA,79 (2), 75-782.
- AWWA (1971). Water Quality and Treatment (3rd ed.). McGraw Hill Book Company, New York.
- Degremont (1991). Water Treatment Handbook (6th ed.). Lavoisier Publishing, France.
- Kawamura, S. (2000). Integrated Design and Operation of Water Treatment Facilities (2nd ed.). John Wiley & Sons, Inc. New York.
- Millette, J. R., Arthur F. Hammonds, Michael F. Pansing, Edward C. Hansen, and Patrick J. Clark. (1980). Aggressive Water: Assessing the Extent of the Problem. AWWA,72 (5), 262-266
- MWH (2005). Water Treatment Principles and Design (2nd ed.). John Wiley & Sons, Inc. Hoboken N.J.
- Pisigan, Jr. R. A. and Singley, J. Edward. (1985). Effects of Quality Parameters on the Corrosion of Galvanized Steel. AWWA, 77 (11), 76-82
- Pisigan, Jr. R. A. and Singley, J. Edward. (1987). Influence of Buffer Capacity, Chlorine Residual, and Flow Rate on Corrosion of Mild Steel and Copper. AWWA, 79 (2), 62-70.
- Qasim, S. R., Edward, M. M., and Guany, Z.(2000). Planning, Design, and Operation. Prentice Hall PTR. Upper Saddle River, NJ07458.
- Schock, M. R. (1989). Understanding Corrosion Control Strategies for Lead. AWWA, 81(7), 88-100.
- Steve H. Reiber, John F. Ferguson, and Mark M. Benjamin. (1987). Corrosion Monitoring and Control in the Pacific Northwest. AWWA, 79 (2), 71-74