The Effect of Al-Rustimiyah WWTPS' on the Nutrients' Distribution in Diyala River

Authors

  • Safaa Nasser Hassan Al-Hussaini  Ministry of Higher Education, Baghdad , Iraq

Keywords:

Al-Rustimiyah WWTPs', Diyala River, ORP, TN, NO3-N, NH3-N

Abstract

Nutrients, represented by nitrogen and Phosphorus compounds, are found in wastewaters and rivers at different concentrations. Al-Rustimiyah Wastewater Treatment Plants (WWTPs) in Baghdad, Iraq are over loaded with high concentrations of wastewater that exceeds the plants' capacities, which intern are bypassed directly to the receiving water body represented by Diyala River. The reach of Diyala River just before its confluence with Tigris River south of the capital city Baghdad and opposite to Al-Rustimiyah WWTPs', was taken as the case study. Its pollution status was assessed with regard to nutrient compounds levels. The parameters: ORP, TN, TKN NH4-N, NH3-N, NO3-N, and NO2-N were monitored and measured at nine sites along the river reach for a period of one year to evaluate seasonal variations. The first site represents a point upstream the discharges of the WWTPs' flowing into Diyala River, while the second to eighth sites were located at each discharge from the WWTPs of Al-Rustimiyah in which each plant has two discharges into the river; the treated effluent and the raw bypass. The last site was located downstream of all discharges above. It was found that water at sites two, seven, and four, respectively, were the most polluted points among all duo to the presence of the bypasses from the WWTPs at these sites.  Regarding TN, NH3-N, and NH4-N, concentrations, the river was classified as heavily contaminated with raw wastewater at site two and between low to medium strength at further sites, excluding site one. NO3-N and NO2-N concentrations classified the river water as effluent water rather than river water with regard to Iraqi standards. As for the ORP concentrations, the river was categorized as anoxic through winter to anaerobic in summer from station two to the end. Furthermore, the strong odor observed on site mainly during summer, might be attributed to the formation of acid and methane production that goes with the obtained low levels of ORP. Reversed relations were found connecting the ORP levels and each of the nitrogen and phosphorous compounds.

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International Journal of Scientific Research in Science, Engineering and Technology

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Published

2018-07-30

Issue

Volume 4, Issue 9, July-August-2018

Section

Research Articles

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How to Cite

[1]
Safaa Nasser Hassan Al-Hussaini, " The Effect of Al-Rustimiyah WWTPS' on the Nutrients' Distribution in Diyala River, International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 4, Issue 9, pp.12-20, July-August-2018.