Background
CESPT, one of the best run water utilities in Mexico, is responsible for providing water and wastewater services in both Tijuana and Playas de Rosarito. In 2010, as part of its master plan to extend wastewater collection and treatment services to 100% of the population and achieve zero discharges of untreated sewage into rivers and streams, CESPT undertook the construction of two additional wastewater plants—La Morita to serve residents in the southeastern area of the city and Tecolote-La Gloria to serve residents in the southwestern area of the city. The Tecolote-La Gloria plant was approximately 55% complete, but construction was halted due to a contractor dispute.
Scope
CESPT proposes increasing its wastewater treatment capacity through the construction of the Tecolote-La Gloria WWTP. The 8.7 mgd plant has a biological treatment process using extended aeration/activated sludge (EA/AS). The system includes nitrification, denitrification, phosphorus removal and UV disinfection, as well as a sludge digester and sludge pumping station and will be constructed in three 2.9 mgd modules. Treated effluent will be discharged into the San Antonio Creek, which empties into the Pacific Ocean.
Benefits
This plant will help reduce environmental and health hazards associated with untreated sewage discharges that affect local residents, as well as other communities along the Pacific coast, including California. The treated effluent from this plant can be used for non-potable uses, such as irrigation of green areas.
