As a subconsultant to Florida Aquastore, Globaltech provided process design, mechanical design, and services during construction for three separate wastewater treatment plants in Aruba.
The design-build project included a 4.5 mgd expansion to an existing oxidation ditch WWTP (Bubali), a new 2.7 mgd SBR WWTP (Zeewijk), and a new 1.2 mgd SBR WWTP (Parkietenbos) that treats only high strength septage. Globaltech provided the design (specifications and drawings) for all three (3) WWTPs which included; headworks facilities, aeration treatment systems, clarification facilities, solids handing and dewatering systems, odor control systems, reuse systems, storage tanks and pump stations for each WWTP.
The headworks facilities included: influent screens, grit removal (centrifugal, detritor and rolling-aeration style system), grit conveyors, fat removal facilities, influent structure and septage unloading facilities. The aeration treatment systems included two (2) sets of sequencing batch reactors, blowers and the addition of new mixer brushes and baffles to an existing oxidation ditch. Both primary and secondary clarifiers were installed. The solids handling systems included sludge storage tanks, mixers, gravity sludge thickening, sludge grinding, two (2) belt filter presses, a polymer system, and screw conveyors. All of the sludge dewatering facilities are located at the Parkietenbos WWTP while only sludge storage facilities are located at the other WWTPs. Biofilter odor control systems were installed at each plant. The reuse system at each plant included cloth disc filters, UV disinfection, reuse pumping and storage facilities.