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Analysis of pollution status of River Illo, Ota, Nigeria

Author

Listed:
  • E. O. Longe

    (University of Lagos, Akoka, Yaba)

  • D. O. Omole

    (Covenant University)

Abstract

An assessment of the pollution status of River Illo, located within River Owo catchments area in Ota, Ogun State, Nigeria, was carried out. The River’s response to deoxygenation due to BOD loading from an abattoir and its dissolved oxygen (DO) level was predicted using the modified Streeter-Phelps model. The average concentrations of measured parameters at the sampling stations include: 2.24 mg/l of DO, 312.85 mg/l of BOD, 782.86 mg/l of chemical oxygen demand, and 620.76 g/l of total solids. The DO model for River Illo showed a positive correlation between measured and calculated DO, while the dissolved oxygen curve gave a double spoon shape of two major segments with distinct zones of degradation, decomposition, and recovery. The self-purification factor (f) for both segments ranged between 0.8 and 1.1 depicting River Illo as a slow moving or sluggish river. The above results revealed slow reaeration of the water body while full recovery from pollution was difficult. The treatment of River Illo before usage is very essential to ensure public health safety of users from waterborne diseases.

Suggested Citation

  • E. O. Longe & D. O. Omole, 2008. "Analysis of pollution status of River Illo, Ota, Nigeria," Environment Systems and Decisions, Springer, vol. 28(4), pages 451-457, December.
    • Handle: RePEc:spr:envsyd:v:28:y:2008:i:4:d:10.1007_s10669-008-9166-4
    DOI: 10.1007/s10669-008-9166-4
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    Cited by:

    1. David Omole, 2015. "A Model Selection Procedure for Stream Re-Aeration Coefficient Modelling," Modern Applied Science, Canadian Center of Science and Education, vol. 9(9), pages 138-138, September.

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