Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : WQI

Impact of Medical City and Al-Rasheed Power Plant Effluents on the Water Quality Index value of Tigris River at Baghdad City

Abdul Hameed M.J. Al Obaidy; Eman S. Awad; Zahraa Zahraw

Engineering and Technology Journal, 2016, Volume 34, Issue 4, Pages 715-724

Water quality deterioration in surface water is the impact of anthropogenic activities due to rapid industrialization. Tigris River within Baghdad city is of particular importance in the study of surface water quality because; industrial and municipal wastes, agricultural and runoff from developing areas were mixing with river flow and surrounding water body thereby deteriorating the quality. The aim of the study was to assess the WQI on the basis of Weighted Arithmetic Index in order to evaluate the water quality of the Tigris River for drinking purposes from three stations within Baghdad city during 2013. The WQI was calculated based on the concentration of eleven parameters (pH, Total Dissolved Solid (TDS), Total Hardness, Calcium, Magnesium, Chloride, Turbidity, Nitrite (NO2), Nitrate (NO3), sulphate (SO4) and Zinc). The calculation of WQI showed that the water quality of Tigris river can be rated as very poor and unsuitable conditions at winter and summer, respectively, in the 1st site which is situated at the north of the study area while the water quality of the 2nd site can be categories as unsuitable conditions at all season of study and for 3rd site can be rated as poor and very poor conditions at winter and summer season, respectively. Therefore, there is need a regular monitoring of water quality in order to detect the changes in physio-chemical parameter concentrations.

Evaluating Water Quality of Mahrut River, Diyala, Iraq for Irrigation

Abdul Hameed M. Jawad Al Obaidy; Eman S. Awad; Abbas J. Kadhem; Athmar A. Al Mashhady

Engineering and Technology Journal, 2015, Volume 33, Issue 4, Pages 830-837

Water Quality of Mahrut River, passing through Muqdadiyah, a city in Diyala, Iraq, was evaluated for irrigation using the Canadian Council of Ministers of the Environment Water Quality Index (CCME WQI). Water samples were collected from six sites during two seasons, summer and winter in 2010-2011. Index scores were determined for fifteen constituents (pH, EC, HCO3, Cl, Sodium Absorption Ratio (SAR), Soluble Sodium Percentage (SSP), Residual Sodium Carbonate (RSC), Cd, Cr, Cu, Fe, Pb, Mn, Ni and Zn). The results of the calculated CCME WQI indicated that water quality of Mahrut River was marginal condition for irrigation in the 1st site while it was poor condition in the other sites. It is suggested that monitoring of the river is necessary for proper management to solve pollution problems in the river system.

Applicability of Overall Index of Pollution (OIP) for Surface Water Quality in Assessment of Tigris River Quality within Baghdad

Alhassan H. Ismail

Engineering and Technology Journal, 2014, Volume 32, Issue 1, Pages 74-90

Water quality index is one of the most effective tools to communicate information on the quality of water to the concerned citizens and policy makers. In this study, an attempt has been made to assess the water quality of Tigris River within Baghdad using the overall Index of Pollution (OIP) for surface water and examine the applicability of OIP for Iraqi water bodies by comparison the results with previous
scientific studies conducted for the same river. Twelve parameters were considered for estimation of OIP in Tigris River. It was found that mathematical equations given by OIP developers to estimate the index does not give a precise calculations, therefor,Microsoft excel (2010) for windows was used to extract value function curves for the
individual parameter. According to OIP, the river water is heavily polluted at Al-Doura WTP and Al-Rasheed WTP and the total coliform bacteria (TC) was the major factor that affects the quality of the river. Based on previous scientific studies, it was noticed
that the OIP is not quite applicable in assessment of Tigris river quality and even the previous studies that were conducted for the same river and used different water quality indices, it was found that some contrarieties and variations in the results of these studies when compared between each other. Therefore, develop a unique water
quality index applicable to Iraqi water bodies is of a prime importance.