Mekkah & Jeddah Wastewater / Water

The planned effluent utilization includes: irrigation of agricultural and landscaped areas; industrial water needs; various public and municipal needs including street cleaning, fire fighting. The project involved implementation of tertiary wastewater treatment, transmission systems and storage…

The planned effluent utilization includes: irrigation of agricultural and landscaped areas; industrial water needs; various public and municipal needs including street cleaning, fire fighting. The project involved implementation of tertiary wastewater treatment, transmission systems and storage facilities. The tertiary wastewater treatment for both cities, included chemical coagulation, sedimentation, recarbonation, filtration, ozonation and chlorination. Additionally a reverse osmosis process was incorporated in Jeddah in view of the high salinity (6,000 - 7,000 ppm) of its wastewater. The transmission systems included:

• Pumping installations,
• Conveyance mains, with all related appurtenances, for transport of the treated effluent from the treatment facilities to storage reservoirs at strategically selected high points in the cities,
• Storage facilities that incorporated a number of ground tanks each providing storage for 50,000 cubic meters of treated effluent.