Environmental Compliance is also a provider of vacuum evaporation services and solutions. The controlled atmospheric separation technology (CAST) unit separates solid constituents from water in a flash distillation process generating potentially a re-useable product and distilled water. Re-use the product and the distilled water back in the process and be 100% closed loop.
Vacuum Evaporation Water and Waste Treatment
The CASTion system is a vacuum assisted, binary flash distillation device designed to treat water and wastes of almost any volume and any chemical makeup. The CAST system processes the influent (contaminated water) and generates an effluent (clean water, and a concentrate) which may be recovered for water reuse/ recycle. The resulting effluent is typically able to achieve contaminant concentrations within process (rinsing) specification or within regulatory discharge limits. Use of CASTion`s system has been demonstrated successfully for on- site water reuse / recycle and off- site concentrate recycle/ reclaim. The system is specifically designed for the recovery of rinse waters and or selected chemical solutions from process operations used in metal finishing, electronics (including printed circuit board manufacturing and semiconductor module assembly processing), photochemical machining and other similar industrial operations. CAST utilizes various aspects of flash distillation and vacuum evaporation in conjunction with a patented vapor / liquid separation system. This combination of fundamental physical principles and patented components produce many of CAST`s competitive advantages.
The flash evaporation design allows CAST systems to use external, commercially available plate and frame heat exchangers, as opposed to the costly, custom built and maintenance intensive heat exchangers used in other systems. The spraying of the process solutions permits a unique feed arrangement. Material can be introduced above the liquid surface of the process solution and below the spray cone, which allows any dissolved or entrained gasses to be desiccated from the feed during introduction. Any foam formed during desiccation is collapsed by the sprayed process solution. This allows CAST systems to operate on process solutions that tend to foam in other types of evaporators. CAST systems use a proprietary method of developing the vacuum on the process vessel and removing the distillate from the system. The method allows distillate to be continuously discharged from the system without the use of the complicated or batch methodologies. This technique eliminates any fugitive discharges.
The vacuum used in CAST systems causes the water to evaporate at a much lower then normal temperature, typically 100- 140 EF. This facilitates the use of engineering plastics, thus greatly reducing the overall cost of manufacturing and customer installed cost. CAST systems are constructed from time tested quality components produced by leading industrial suppliers. The systems are constructed to be maintenance free and simple to service if required. CAST systems incorporate an external sight glass/ level control and heat exchangers. This design eliminates entering the process vessel during maintenance, thus enhancing the reliability of the system, reducing labor and chemical emissions, and operator/ chemical contact. CAST systems are controlled by programmable logic controllers using CPS designed software that is capable of detecting and reporting operating flaws, managing machine operation, executing emergency shut- down, and on- line telephone diagnostics. The systems are fully automatic and completely fail- safe in design. A standard automatic safety system is equipped with redundant controls that isolate the system from the environment, ancillary equipment, and personnel in the event of an uncontrolled shutdown. Rejection ratios of 99.999% can be obtained by CAST systems.
