The Coega Development Corporation commissioned ACE in 1999 and 2000 to undertake the detailed engineering studies for the future potable water and return effluent supply to the Coega Industrial Development Zone for the proposed Coega IDZ.
This Stage of the infrastructure development programme involved various tertiary treatment process selections, pipeline route selection, detailed planning of infrastructure, environmental scoping and costing of alternative schemes associated with the phased development of the Coega IDZ.
Environmental scoping was carried out to assess the environmental impact and environmental mitigating factors to be implemented in the construction environmental management plan.
The engineering outline design and performance specifications were carried out for a return effluent supply scheme of 45 Ml/d capacity (Estimated Project Cost – R 65 million) for industrial consumption, firefighting and landscaping. The design study involved carrying out pilot scale trials to a stream of secondary treated domestic effluent, treatment process selection, process design and optimization and sizing of the return effluent scheme, pumped storage supply and tertiary reticulation.
The feasibility studies for return effluent treatment were followed by detailed engineering studies, outline design and performance specifications for the tertiary treatment processes.
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