The CTS chemical treatment system from Fluid Metering is designed to accurately deliver caustic soda and other pH adjusting chemicals for treatment of water and wastewater. The use of caustic soda serves to raise the pH of well water which, untreated, is typically acidic and damaging to distribution system piping.
Adding caustic soda to water and wastewater is typically accomplished using metering pumps and diaphragm pumps represent the most widely used. However, diaphragm pumps rely on four internal check valves for operation and caustic soda can crystallise, causing problems in any pump using check valves. Crystallisation affects the sealing of the check valves causing backflow, which will directly affect pH control accuracy.
Whether for scheduled check valve maintenance or complete failure, pumps with check valves need to be routinely taken out of service and rebuilt, at considerable expense and downtime. In high-demand applications, this service may be required weekly.
The CTS pump uses valveless piston technology in which a single rotating and reciprocating ceramic piston accomplishes both the pumping and valve functions, thereby eliminating the need for check valves and the associated maintenance.
Sapphire-hard internal ceramics are used to ensure that there is no degradation in accuracy over time, and therefore, no need to recalibrate. The CT measures 39.4 x 34.3 x 17.8 cm and weighs 6.35 kg. The fluidics are contained in a NEMA 4X protective enclosure which can be wall mounted and power consumption is less than 100 W.