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Treatment of Petroleum Refinery Wastewater with Constructed Wetlands (Paperback)
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Treatment of Petroleum Refinery Wastewater with Constructed Wetlands (Paperback)
Series: IHE Delft PhD Thesis Series
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Pollution of waterbodies and the environment by petroleum industry
is of particular concern in Nigeria. This problem can be addressed
by the application of constructed wetlands (CWs) which is a
nature-based system that is simple to construct, have low
operational and maintenance costs in terms of supply of energy and
its periodic maintenance. The application of CWs in Nigeria for
polishing of petroleum refinery wastewater is an unprecedented
research. This PhD thesis focused on some specific objectives which
were characterization of treated secondary refinery wastewater,
design, construction, operation and monitoring of planted (T.
latifolia, C. alternifolius and C. dactylon) and unplanted vertical
subsurface flow, horizontal subsurface flow and hybrid CWs for the
removal of suspended solids, nutrients, heavy metals, organic
matter and organic pollutants. The CWs effectively treated the
petroleum contaminated wastewater to effluent compliance limits. In
this study, T. latifolia planted CWs had consistently higher
removal efficiencies for all the measured parameters than C.
alternifolius and C. dactylon planted CW systems. Therefore, in
order to improve the wastewater quality discharged by Kaduna
Refining and Petrochemical Company (KRPC) Nigeria, meet stringent
guidelines and protect the recipient streams, installation of CWs
at the effluent discharge point of KRPC is strongly recommended.
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