Challenge

Since the wastewater treatment facility is located near a retirement communtiy, the design of the plant had to be taken into consideration as well as the small land area, noise level of the equipment and potential odors.

The OMNIFLO® Sequencing Batch Reactor (SBR) replaced an existing lagoon and also needed to be designed for expansion to accommodate future growth in this community located in Sun Lakes, Arizona.

Solution

The engineering firm, Carollo Engineers provided the planning, design and construction of this facility to treat approximately 2.4 million gallons per day (MGD) of wastewater.  Along with the OMNIFLO® SBR process the facility includes screening, filtration, post equalization and an ultraviolet disinfection system.  The plant is designed to produce high-quality effluent that is disinfected and has low turbidity and nitrogen levels.

The Sun Lakes facilty discharges the effluent to recharge wells; therefore it was designed to meet Title 22 effluent quality.  Rectangular process basins are designed to be low profile and to cover the mechanial equipment, which is housed in buildings below-grade to elimanate noise.

The biosolids produced from this system are first treated by aerobic digestion, which provides stabilization and thickening of the waste sludge.  Centrifuges then thicken and dewater the sludge for disposal in the local landfill.

Results

The OMNIFLO® SBR is a quality wastewater treatment process that is managed and operated producing an excellent effluent.  

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