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Produced Water Effluents Analysis in an Oil Processing Facility (A Case Study of Nkoro Field in Nigeria)

Journal Name:

  • International Journal of Science and Engineering Investigations

Publication Year:

  • 2016

Key Words:

Author NameUniversity of Author
Abstract (2. Language): 
A study of Produced Water Effluents Analysis in an Oil Processing Facility (A case study of Nkoro Field) was conducted. The Physical, Chemical and Heavy metal parameters were monitored at various treatment stages up to the point of discharge, using in-situ/ laboratory analytical techniques/methods in order to access the impact of the produced water effluents on the receiving surface water quality. The produced water effluents of the Nkoro Field were sampled weekly for twelve (12) weeks in accordance with Environmental Guidelines and Standards for the Petroleum Industries in Nigeria (EGASPIN). The values of the selected parameters were determined In-situ/Laboratory Analytical Techniques/methods such as Photometric and Titrimetric methods, Hanna HI 98129 pH/Temperature/Conductivity/TDS meter, Gravimetric, HACH DR 2400 spectrophotometer and Atomic Absorption Spectrophotometer (AAS) (GBC Avanta Ver.2.02). Temperature, pH, Electrical Conductivity, Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Oil and Grease content, Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD5), Alkalinity, Phosphate, Sulphate, Ammonium, Dissolved Oxygen (DO), Copper, Zinc, Chromium, Lead, Iron, Manganese, Nickel and Cyanide. All the parameters except Electrical Conductivity, Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Alkalinity, Phosphate, Chromium, Lead, Iron and Nickel fall within the recommended limits disposable to surface water ways in Nigeria. The amount of these parameters reflects the quality and efficiency of the produced water treatment plants installed. The appearance was clear and in accessing the effective and efficiency of the produced water effluent treatment process in relationship to design specification, one could conclude that the efficiency is on the average and really needs modifications to reduce the concentrations of the parameters that do not conform to the standard limits.
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REFERENCES

References: 

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[3] Department of Petroleum Resources (2002): Environmental Guidelines and Standards for the Petroleum Industry in Nigeria; 2002 Revised Edition. Pp. 284-290.
[4] FEPA (1991): Federal Republic of Nigeria: (s.18), National Environment Protection (effluent limitation) Regulations, 1991. (s. 19), National Environmental Protection (Pollution Abatement in Industries and Facilities Generating Wastes) Regulations, 1991. Federal Republic of Nigeria Official Gazette No: 42, Vol. 78, 20th August, 1991, p38.
0
0.1
0.2
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0.5
0.6
0
5
10
15
Nickel (Ni) concentration (mg/l)
Time (weeks)
FMEMV Standard = 0.02
0
0.005
0.01
0.015
0.02
0.025
0.03
0.035
0.04
0
5
10
15
Cyanide (CN-) concentration (mg/l)
Time (weeks)
FMEMV Standard = 0.05
International Journal of Science and Engineering Investigations, Volume 5, Issue 51, April 2016 45
www.IJSEI.com Paper ID: 55116-09
ISSN: 2251-8843
[5] Gordon, M. F., John, C. G., and Daniel, A. O. (1981): Water and Wastewater Engineering, Vol. II, Water Purification, Wastewater Treatment and Disposal, Wiley International Edition. TOPPMAN Printing Co. Ltd, Singapore.
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[11] Smart, J. (1981): European Communities, Directives Relating to the Quality of Water Intended for Human Consumption, Water of Air and Pollution p15.

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