Updated: July 2002

1. Special Features

Sasakura's evaporating concentrator is a combination of a efficient heat pump and a thin-film horizontal tube evaporator that achieves remarkable low energy consumption comparing with conventional concentrator. For reducing the volume of wastewater and recovery of reusable materials, Sasakura's technology solves the problems in treating various types of industrial wastewater. The evaporating concentrator is also applicable to the concentration process in many industries.

2. How VVCC Works

1. The liquid feed to the unit is taken to the evaporator where it is mixed with re-circulation fluid and sprayed over the outside of the tubes.
2. The liquid evaporates on the tubes located inside the shell under vacuum.
3. The vapor generated in the evaporator is compressed in the heat pump then flows to the evaporator tubes as heating steam.

3. Line Up

Model VVCC: Lowest energy consumption by heat pump
Model RHC: Wide application by steam ejector (thermal compressor)
Model STC: Operation with low pressure waste steam
Model FTC: Suitable for high viscosity fluid, slurry with flash evaporator

4. Applications

Semi-conductor/LCD manufacture

TMAH contained waste
PW and UPW systems (Ion exchanger) regeneration waste
Ammonia, nitric acid, fluoric acid contained waste
CMP process waste

Automobile/non-friction bearing manufacture

Aqueous cutting oil waste
Mold release cleaning waste

Electrolytic condenser/printed circuit board manufacture

Recycling of etching solution (HCl)
Cleaning/rinsing process waste

Paper/pulp mills

Concentration of black liquors
Lignin contained waste

Copper foil/plating factories

Concentration control in copper sulphate solution bath

Food processing and breweries

Yeast culture process waste
Fermentation and distillation process waste
Amino acid concentration process

Chemical/medicine manufacture

Mirabilite (sodium sulphate) laden waste
Recovery of phosphoric acid
Ammonium chloride laden waste
Ammonium nitrate laden waste
Acetic acid waste
Ink laden waste
Medicine concentration process
Salty waste

Textile/dye works

Recovery of caustic soda
Dye laden waste
Caprolactam concentration process

Environmental facilities

Treatment of leaching water from landfill waste
Desulphurization waste of smoke
Scrubber waste from incinerator
Highly treatment of sewage

Photo: VVCC concentrator suitable for large capacity concentration process

Flow diagram: VVCC flow diagram