Patrick Charles Pty Ltd. (PCPL) products

The Aspiro plus is the latest development from PCPL.The ASPIRO PLUS supplies air below the water surface and transfers it into a highly mixed horizontal water stream not unlike the wake of a boat. This efficiently mixes air and water into the lagoon, tank or other basin that requires it. The development of the ASPIRO PLUS sees higher oxygenation efficiencies than standard ASPIRO units, and also a greater level of control in your plant through the capability to aerate and mix, or to mix alone by turning air blowers off. This is a great advantage to batch operated plants and allows for nitrification and denitrification using the one unit.

The Surfair is a direct-drive floating impeller pump type aerator. It’s simple design is based around a screw-type auger impeller rotating at speed within an enclosed tube. This allows for the lifting of large quantities of liquid through the tube that are then directed out over the surface of a basin or tank in a flat splash pattern to mix and aerate the contents. The Surfair can be designed to operate from quite shallow to very deep vessels by use of a varying length extension to the pump tube that can draw the intake liquid from any depth within reason.

PCPL offer an entire range of low speed gear driven impeller aerators. These units are based around an inverted cone type impeller and produce excellent oxygen transfer characteristics. Units available from 4.0 kW to 110 kW. Units can be supplied as fixed or floating aerators in a variety of materials of construction.

PCPL’s Liftair aerators offer a floating or bridge mounted aerator based on airlift technology suitable for low powered applications where very high oxygen transfer capabilities per unit of power are required (up to 4 kg.O2.kW.hr). A close coupled regenerative blower supplies air to a submerged air diffuser manifold located within a directional airlift volute. This draws liquid from vertically beneath the volute and aerates and discharges the liquid horizontally. Excellent pumping rates and mixing are achieved at very low power.

Aquafloat Induced Air Flotation (IAF) aerators & associated plant from PCPL provide an efficient & cost effective air flotation system for the removal of fats, oils, greases and other solids from industrial & municipal water and wastewater. Aquafloat is also suitable for the thickening of sludges from other water & wastewater treatment processes. Aquafloat is also suitable for the efficient diffusion of externally supplied gases (such as ozone or nitrogen) into liquid. Aquafloat can provide an effective and simple alternative to more traditional dissolved air flotation (DAF) plants.

PCPL offer a range of fine and medium bubble membrane diffuser discs and tubes available in EPDM, Santoprene, Viton and other engineered polymers for diffused air applications. Discs are available with diameters from 235mm right up to 520mm. Tubes are available in many diameters and lengths.

Newair is a revolutionary air diffuser made by Pfleiderer Water (Germany) out of HDPE. The diffusers are solid construction and porous for air throughput. The HDPE material means that the units exhibit very hugh chemical resistance, even in very extreme pH environments. An excellent feature of the Newair units are their capability to withstand varying pressures and airflows that cannot be handled by membrane diffusers. This allows air cleaning, and water level fluctuation without complicated air control systems.

Hexair high density diffuser mats are a flexible mat structure with integral fine bubble air diffusers that can be lifted in and out of existing locations to supply supplementary air when required. They can also be installed on uneven surfaces (within certain tolerances) and placed into existing situations without emptying or taking a system off line.

The D-Cant range of clarified liquid decanters typically consist of a submerged bellmouth or rectangular weir that is supported by floats and discharges via a flexible pipe. The weir is designed and installed to remove clarified liquid from the surface of a tank or basin without disturbing deeper layers where solids may be concentrated. This enables the removal of clarified liquid without solids entrainment and is particularly applicable to batch or sequenced plant operations. Conversely, the D-Cant can, in certain applications be applied as a surface scum removal device with minor design alterations.

FM Environmental Ltd (UK) are a partner of PCPL’s and through our association we offer technical support to their GREASE GUARDIAN range of mechanical oil and grease removal systems and packaged wastewater treatment plants in the region.