MOROIL best believes that business operations should be undertaken sustainably. Energy efficiency programme and pollution abatement are sharing equal motivation weightage at MOROIL. The robust, easy to operate and low maintenance treatment technology of constructed wetland system is an innovativeness, partnered by the University of Mauritius (UOM). It only provides a cost effective solution as compared to traditional methods of pollution abatement but also dwells on a differentiation strategy. The main driver for such project is to reduce, with enough statistical evidence, the Chemical Oxygen Demand of MOROIL’s effluent to the permitted threshold of 150 mg/L. The design, construction and set up of the treatment system have leaned against the expertise of the research unit of UOM and against international research papers. Statistical analyses using regression tests, 1-way ANOVA and non – parametric tests, all at 95 % confidence level will be performed to test the validity of the objectives set. Another research element will consist of the profiling of microorganisms in the wastewater as well as in the sediments and root systems of the bed. The statistical significance (95% C.I) on abatement of pollution will hence be tested. Finally, the potentiality of microbial inoculation and addition of enzymes such as ureases will be investigated. This project has opened doors for its outbound commercial applications. MOROIL is in talk with SPHB, an oil refinery in Reunion Island, and they have declared interest in this innovative green approach.