University of Khartoum

Assessment of Physical and Chemical Properties of Khartoum Refinery Created Wastewater and Its Uses in Agriculture

Assessment of Physical and Chemical Properties of Khartoum Refinery Created Wastewater and Its Uses in Agriculture

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Title: Assessment of Physical and Chemical Properties of Khartoum Refinery Created Wastewater and Its Uses in Agriculture
Author: Ibn Idris, Manal Mohamed
Abstract: This study was conducted at Khartoum Refinery Khartoum-North (Elgaily), and central laboratory at Shambat complex. The aim of this study was to assess the physical and chemical properties of wastewater before and after treatment, analysis of river water, well water and tap water were also carried out in order to make comparison between them and treated wastewater On other hand, three samples of date were irrigated with treated wastewater and other irrigated with river water and tap water and then analyzed for checking the levels of some trace and major elements. The results of study on some physical and chemical properties of different types of tested water showed that: The PH values in these tested water were 8.40 for untreated wastewater, 7.30 for treated wastewater, 7.42 for well water, 7.69 for river water and 7.30 for tap water. Turbidity was 47.34 for untreated wastewater, 30.87 for treated wastewater, 1.33 for well water, 42.00 for river water and 2.59 for tap water. Results indicated that there were significant differences in total dissolved solids among the tested water (2623.93 – 90) mg/l. It was found that the differences in BOD5, COD and NH3 between treated wastewater and other tested water were significant (P =603; 0.05). The highest values of BOD5, COD and NH3 were found in untreated wastewater followed by treated wastewater while the lowest values of BOD5, COD and NH3 were recorded for other tested water. Insignificant differences were observed among the tested water except untreated wastewater for sulfide (0.10-0) mg/l, oil content (4.20 – 0) mg/l and phenol (0.10 – 0) mg/l. The major mineral elements content of different types of tested water were Ca (12.36 – 37.99) mg/l, Mg (5.39 – 12-76) mg/l, Na (11.54 – 82.33) mg/l, K (1.87 – 4.46) mg/l , P (0 – 1.40) mg/l . The trace element content of the different types of water was Cr (0.03 – 0.46) mg/l, Cu (0 – 0.13) mg/l, Fe (0.09 – 0.30) mg/l, Zn (0 – 0.34) mg/l, Pb (0 – 0.06) mg/l, Ni (0 – 0.62) mg/l, Mn (0 – 0.01) mg/l, Cd (0 – 0.08) mg/l. Analysis of the three samples of date showed significant differences (P =603; 0.05) in their ash content, but for moisture content there was insignificant differences (P =603; 0.05) between date irrigated with treated wastewater and date irrigated with tap water while significant differences were observed among three type of date. Insignificant differences were observed among three samples of date in their major mineral elements. For trace elements the values obtained were: Cr (0 – 0.01) mg/1000g, Cu (0 – 0.41) mg/1000g, Fe (0.64 – 1.45) mg/1000g, Zn (0.21 – 1000g 0.52) mg/1000g, Mn (0.01 – 1.16) mg/1000g, Cd (0 – 0.01) mg/1000g. The content of Ni in the three samples of date was (0.01) mg/1000g and lead element content was found to be nil for the three samples of date. Encouraging results were obtained with regard to the reuse of treated waste water for production of crop. Therefore, the study recommends adopting treated wastewater reuse for production of crops and for forestry irrigation.
URI: http://khartoumspace.uofk.edu/handle/123456789/13030
Date: 2015-06-16


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