Project

The Sewerage Board of Limassol have commissioned LBJ to update the Sewerage Master Plan and Feasibility Study, which was last prepared in year 1995.

The study made recommendations as to the adequacy of the proposed future sewerage scheme and developed two alternatives in terms of wastewater collection and treatment (including location of a second wastewater treatment plant). The study included phased cost estimates of the required works, including investment and projected operations cost. The final output provided a coherent, staged strategy up to 2025 to further develop and extend SBL services in line with local legislation and applicable EU Directives.

As for the treatment works, the existing wastewater treatment plant was constructed in 1992 to serve the Greater Limassol Area, and had design capacity of 22,000 m³/day and utilizes biological treatment with provision for tertiary treatment for effluent reuse in irrigation and ground water recharge. The sludge produced is anaerobically digested and dewatered to be used subsequently in agriculture as a fertilizer.

Assignment

Kassia’s assignment focused on the treatment works component. The following tasks were undertaken:

Data Collection and initial assessment

• Base line project conditions. Study area, industry situation, population figures, infrastructure, and environmental conditions.
• Wastewater characterization study.
• Treatment objectives, including Industrial source pre-treatment requirements.
• Existing wastewater treatment plant present performance assessment.
• Existing wastewater treatment plant future upgrade requirements.

Master Plan and Feasibility

• Development of the alternative treatment schemes, and outline design of alternatives.
• Economic feasibility study of alternatives, evaluation of alternatives and recommendation of preferred option.
• Assessments of the current effluent reuse applications. Identification of other reuse options, and recommendation of preferred option.
• Treated sludge disposal and reuse options, and recommendation for reuse.