Aeration is typically the single largest energy user in a wastewater plant, so the blower technology behind it has an outsized effect on the operating budget. We help size and, where it makes sense, blend blower types to fit the load profile.
The workhorse of wastewater aeration
Positive displacement blowers use rotary lobes to move a fixed volume of air per revolution, giving them a wide, flexible turndown range and the ability to ride out pressure and flow swings without much drama.
They carry a lower first cost than screw, turbo, or hybrid alternatives, though that advantage can be offset by higher energy consumption at partial load depending on the duty cycle.
Internal compression for higher-pressure, deeper basins
Screw blowers compress air internally within the rotor profile rather than relying solely on backflow compression, which suits them to higher-pressure duty and deeper aeration basins where PD blowers start to lose efficiency.
Oil-free, high-speed efficiency at a steady design point
Turbo blowers spin an aerodynamic impeller at high speed on air or magnetic bearings, eliminating the oil, gearbox, and mechanical wear points found in other blower types.
They deliver the best efficiency of the major blower technologies when operated at or near a consistent design point, in a compact footprint with low noise and vibration — the tradeoff is a narrower comfort zone for wide, erratic swings in demand.
Rotary lobe flexibility with screw-level efficiency
Hybrid blowers combine a rotary lobe and a low-pressure screw rotor in one package, aiming to hold the PD blower's wide, flexible control range while closing much of the efficiency gap to turbo technology.
Many plants blend two or more of these blower technologies under a shared control strategy — matching machine type to base and peak load — and we can help size and combine that mix for your specific facility.
From a single piece of replacement equipment to a full plant process flow, PLZ Water Tech works alongside your team to design, size, and source the right technology.
