Statiflo - Model GDS -Gas Dispersion Systems
The Statiflo Gas Dispersion System (GDS) is a new concept for simultaneous mixing and mass transfer. The Statiflo GDS is designed to overcome the difficulties associated with the use of a single static mixer. The system uses two different mixers, the first, in a sidestream, to form small gas bubbles and the second, in the main line to provide contact time and efficient mass transfer. As the gas bubbles are formed in a constant velocity sidestream, the gas bubble size is constant and independent of any variations in the main liquid flow.
The Statiflo GDS consists of:
- Main line mixer/contactor
- Sidestream equipment, including:
- Pre-disperser static mixer
- Gas eductor (if gas at low pressure)
- Centrifugal pump ( operating at constant flow rate)
- Sample point, valves, instrumentation, interconnecting pipework and stand-by equipment as required.
- The sidestream gas/liquid dispersing equipment can be compactly side mounted directly on the contactor mixer or alternatively floor/skid mounted.
Typical applications include:
- Aeration of drinking water for iron, manganese and carbon dioxide removal
- Ozonation for disinfection of drinking water and waste water
- Ozonation for treatment of cooling tower water to disinfect and reduce scaling thereby offering better heat transfer efficiencies, lower blowdown volumes and decreased chemical usage.
- Ozonation for removal of disinfection byproducts (DBPs)
- Ozonation for removal of micro-pollutants such as pesticides
- Ozonation for odour and taste elimination
- Carbonation of mineral water
- BOD and COD reduction
Key benefits include:
- High mass transfer efficiency which does not decrease over time
- Low capital cost
- Low pressure drop
- Gas bubbles generated independently of liquid velocity in contactor
- Low energy consumption
- High turndown capability
- Compact design
- No moving parts except for centrifugal pump
- Minimal maintenance requirements
- Simple to operate with no special training required.
Market-leading mixing element designs
Supplied with fixed STL elements (Series 600 contactor) or fixed STM elements (Series 650 contactor). Typically provided with a long element “pitch ratio” to increase contact time.
Available for almost all pipe sizes
Diameters for the main line contractor from as small as DN200 (8″) with no theoretical upper limit. For the sidestream injection system, diameters as small as DN15 (1/2″) possible.
Superior mass transfer achievable
With the sidestream injection Static Mixer creating fine gas bubbles independent of variations in the mains flow, the highest levels of mass transfer efficiency between the gas and liquid phases are maintained across the entire flow range. Statiflo can guarantee a minimum mass transfer efficiency of 95%.
Accessories to complement
Always supplied with take-off and reinjection connections on the main line. Sample points, valves, instrumentation, interconnecting pipework and stand-by equipment also supplied as required.
Materials to suit your requirements
Generally supplied in 316L stainless steel but other commercially available materials can be supplied.