Siemens Water Technologies to Introduce Multi-Barrier Clarifier for Large Flow Rate Applications
Warrendale, Pa., June 11, 2006 - Water Technologies, a division of the Siemens Group Industrial Solutions and Services (I&S), will launch the new Trident HSC high-rate, two-stage clarifier, at the AWWA Annual Conference and Exposition (ACE) in San Antonio, Texas, June 11-14. The design expands the flow capabilities of the packaged Trident HS design, launched at the 2005 ACE. The new, larger Trident HSC designs include standard basin configurations for up to 20 million gallons per day (MGD) per unit.
Both the Trident HSC and the Trident HS systems will be on display at this year's AWWA conference in Siemens booth #2029.
The Trident HSC process uses proven coagulation-flocculation technology at high rates to minimize required footprint. High-intensity mixing and solids contacting allows floc particles to settle rapidly without the need for specialty chemicals or external ballast. Heavy floc particles are settled using inclined plate separators, followed by an upflow buoyant media clarifier for light floc removal. The entire process is monitored and controlled by an integrated control system to ensure that high-quality effluent is produced with minimal operator attention. In addition, Siemens offers a wide range of filtration technologies to complete the process train.
On-site drinking water pilot studies have demonstrated the effectiveness of the two-stage clarifier when removing turbidity, color, organics and pathogens. When combined with filtration, the system offers more than 4-log removal credit of cryptosporidium and giardia, and has been shown to reduce total organic carbon (TOC) by more than 55 percent.
"The Trident HSC system offers plants the high-rate process benefits with the added protection of multi-barrier treatment," says Les Uhlmeyer, Global Director of Product Management at Siemens Water Technologies. "Combining the Trident HSC with one of our filtration systems increases the multi-barrier protection while offering customers single-source responsibility for their process equipment."
While drinking water clarification is the major application for the Trident HSC, the process has also been shown to effectively remove phosphorus from wastewater. The HSC process has removed effluent total phosphorus to less than 100 parts per billion (ppb) with the clarifier system alone, and to less than 20 ppb when filtration is added.
Standard concrete basin designs are available for flows of 5-20 mgd per unit. A packaged clarifier design is offered in steel and stainless steel tanks for flows of 0.5-2.0 mgd per unit.
