Tenebe, I.T. and Emenike, PraiseGod C and Omole, D. O. and Ogarekpe, N.N. and Omeje, Maxwell and Aikulola, A.O. and Omeje, U.A.
(2017)
PREDICTING DEGRADATION WITH BIOCHEMICAL OXYGEN DEMAND IN
DISINFECTANT-POLLUTED SEWAGE.
In: Water and Society, WIT Transactions on Ecology and The Environment, Vol 216,, 5-7, June, 2017, Seville, Spain.
Abstract
Most households frequently make use of disinfectants to annihilate infectious bacteria present in toilets
and bathrooms. Unfortunately, some of these bacteria may be required for the degradation of sewage
in the septic tank system (STS). This paper investigates how the performance (degradation capacity) of
sewage will be affected by the inharmonious addition of disinfectants with biochemical oxygen demand
(BOD) as the predictor. With a clean 50-litre container, a sewage sample was collected from a waste
stabilization pond situated in a Nigerian Tertiary University, transported to the sanitary laboratory in
the Department of Civil Engineering, University of Nigeria, Nsukka, and poured into five 4-litre white
containers. Different doses of disinfectants – 0.5 ml, 1 ml, 1.5 ml, 2 ml, and 2.5 ml, were simultaneously
added only at the initial day of experimental setup under aerobic conditions, and the pH, dissolved
oxygen (DO), disinfectant dose, chemical oxygen demand (COD), and BOD were measured every
three days for three weeks. Multivariate analysis was performed on the explanatory variable – pH,
DO, disinfectant dosage, and COD – using e-Views 8.0, which revealed that the continuous addition of
disinfectants to sewage inhibits its degradation, thereby resulting in increased organic loading within
the STS, and may further lead to septic tank failure due to shock loading and a major source of ground
water been polluted with emerging contaminants.
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PREDICTING DEGRADATION WITH BIOCHEMICAL OXYGEN DEMAND IN
DISINFECTANT-POLLUTED SEWAGE. (deposited 25 Aug 2017 21:36)
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