STRATIFICATION IN WASTE STABILIZATION PONDS I: EFFECTS  ON POND PARAMETERS

EC Ukpong; JC Agunwamba; N Egbuniwe

doi:10.4314/njt.252.533

STRATIFICATION IN WASTE STABILIZATION PONDS I: EFFECTS ON POND PARAMETERS

Authors

EC Ukpong Department of Civil Engineering, University of Uyo, Uyo, Akwa Ibom State, Nigeria.
JC Agunwamba Department of Civil Engineering, University of Nigeria, Nsukka, Enugu State - Nigeria.
N Egbuniwe Department of Civil Engineering, University of Nigeria, Nsukka, Enugu State - Nigeria.

DOI:

https://doi.org/10.4314/njt.252.533

Keywords:

Thermal stratification, coliform bacteria, waste stabilization pond, dissolved oxygen, chemical oxygen demand

Abstract

Stratification studies were carried out on the waste stabilization pond system at the University of Nigeria, Nsukka, Nigeria. Analysis of the samples collected with a water column sampler at 5cm and 0.1m apart showed some stratification of temperature, algae, pH, dissolved oxygen, coliform bacteria, chemical oxygen demand and nutrients. Coliform-bacteria numbers were lowest at positions in the water column where pH, temperature, dissolved oxygen and algae were high. The distribution and variation of both the physiochemical and biological characteristics inside the water body were found to be influenced by thermal stratification. Maximum temperature, DO and pH was observed at the surface layer. The vertical distribution of BOD₅, COD, Coliform bacteria, phosphorus and ammonia nitrogen showed maximum concentration at the bottom layer.

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Issue

Vol. 25 No. 2 (2006)

Section

Research papers of General Interest

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How to Cite

STRATIFICATION IN WASTE STABILIZATION PONDS I: EFFECTS ON POND PARAMETERS. (2006). Nigerian Journal of Technology, 25(2), 24-35. https://doi.org/10.4314/njt.252.533