On Monday, June 6th, both teams visited the sewage treatment plant (STP) located in Dubai Motor City which provides odor control, waste water treatment and sludge treatment on incoming sewage for the emirate of Dubai. The STP is open top (exposed to the atmosphere during treatment) and has a capacity of 8000 m3 per day.
The wastewater treatment process consists of preliminary, secondary/primary and final phases. Preliminary treatment begins as raw wastewater is pumped from the lifting station to a 6 mm coarse screen, grit and grease removal system and 1 mm fine screen. The preliminary phases serve primarily to separate large particles from the raw wastewater. To ensure nitrification and denitrification, the wastewater is pumped into an anoxic tank where it is mixed without oxygen and then pumped into an aerobic tank where it is mixed with oxygen.
The wastewater is subject to secondary treatment within the membrane bioreactor (MBR). The open top membrane bioreactor is the core clarification, aeration and treatment system in the plant.
The Zenon MBR system includes an aerobic tank and membrane tank containing 0.1-micron-pore hollow-fiber membranes. The open top MBR produces effluent in accordance to water quality standards set by Dubai Municipalities. The MBR handles the discharge of treated wastewater, disinfection, nitrogen reduction and phosphorus removal of the water. The final treated wastewater product is appropriate for re-use for irrigation of city landscapes and other acceptable applications.
Dubai Motor City STP provides an invaluable service to the city of Dubai. Clean water is a scarce commodity in the arid region of Dubai; therefore proper wastewater treatment methods are crucial in maintaining sufficient quality of life.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment