Advanced Wastewater Evaporators

Wastewater Evaporators

Competitive Advantages

ThermoEnergy's CAST® technology has many competitive advantages over traditional wastewater evaporators. CAST systems use vacuum flash evaporation within a contained vessel and do not require a heat exchange surface and are not subject to scaling, salting and fouling that is typical of flash evaporation systems. This design allows us to use external components like commercial heat exchangers that are cheaper and easier to maintain.

CAST systems have high flow rates which in-turn create a high shear force within the vessel which maintains a clean heat transfer surface and allows the system to be operated with low temperature heat sources such as hot water, low pressure steam or waste heat. In addition, by spraying the wastewater into the CAST, we are able to attain excellent distillate/condensate quality. Flash wastewater evaporators systems, like CAST, can be used on viscous liquids because of reduced carryover unlike other types of wastewater evaporators. Also the configuration of the CAST system with the spraying of process solution just below the spray cone allows dissolved or entrained gasses to be dessicated from the feed and will collapse any foam allowing the CAST system to be used on liquids with foaming agents.

CAST® System Design

The design of the ThermoEnergy CAST system allows the use of simple technologies, hot water heaters, cooling towers and pumps, as opposed to other wastewater evaporators that require refrigeration systems and/or high pressure steam boilers and other complicated/non-reliable components. The CAST design using these commercial technologies is rugged, reliable, universally available and accepted, thus greatly adding to the overall simplicity and ease of operation of CAST systems.

CAST systems are constructed from time tested quality components produced by leading industrial suppliers. The systems are constructed to be low maintenance and simple to service. The many proprietary details of construction and common sense design, in conjunction with advantages outlined above, make the CAST system the “state-of-the-art” bench mark for wastewater evaporator applications.

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