for Trade Wastewater Recycle
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- Low operating cost (1 c/litre)
- Low maintenance
- Simple operation
- No Chemicals required
- No filters
- No membranes
- No ION exchange media
- Effective for both TDS and TOC
- Zero discharge - closed loop wastewater treatment
- No EPA or Water Board trade waste agreement required
- No water quality monitoring
- Low risk of penalties from non compliance
The system is suitable for many waste streams including ...
- Compressor blowdown
- Drum recycling rinse water
- Electrolyte glycol wastewater
- Electroplating recycling rinse water
- Floor scrubber water
- Flexo ink
- Herbicides
- Machine coolants
- Paint spray booth wastewater
- Parts washer rinse water
- Petroleum & phenol wastewater
- Plating drag outs
- Plating rinse waters
- Radiator repair shops
- Spray washers
- Soil remediation
- Stamping compounds
- Steam cleaner wastewater
- Ultrasonic rinse water
- Vehicle wash stations
- Volume reduction for waste transport
 |
Trade wastewater
evaporator
at herbicide factory.  |
Vacuum is applied to the system and wastewater boils in the evaporation tank at 25ºC. Wastewater boils continuously with wastewater flowing into the tank at the same rate at which it is evaporated. Soluble salts become concentrated and are intermittently discharged by a pump.
Vapour Condensation
Water vapour flows through vapour tubes to the condensation tank where it is condensed to a pure distillate. Distilled water is intermittently discharged by a pump.
Heating & Cooling
The process is highly energy efficient as water vapour is condensed using cold refrigeration. Rejected heat from the refrigeration circuit is used for heating the wastewater.
Recycle Rate
Typical distilled water recovery is 80-95%.
- Easy to install
- Easy to operate
- Easy to monitor
- Easy to maintain
All units are shipped preassembled. Place in location of choice, connect power and three pipes (feed in, product water, concentrate discharge).
Push button start sequence allows the unit to be brought into operation quickly. Plant operation is automatic and computer controlled.
Vacuum, temperature and refrigeration gauges allow operating conditions to be readily monitored.
Large viewing windows enable inspection of the boiling wastewater and condensed water.
As refrigerant is used for both heating and cooling, the system has few moving parts. Maintenance requirements are minimal.
- Dissolved solids (TDS) typically < 25 mg/L
- Heavy metals (Cr, Cu etc.) < 0.01 mg/L
- Herbicides < 0.1 mg/L
- pH 6-7
- Conductivity 5-20 Us/cm
- Water is clean, free from particulate matter.
- Water quality exceeds most town water supplies and is superior to softened water.
-
The boiling process
eliminates most viruses and bacteria, thereby "disinfecting" the water.
| Feature | Comments |
| Chemical-free water treatment | For many applications |
| Compliance monitoring NOT required | If water is recycled |
| Ferricyanides & stable complexes | Excellent for difficult to treat and soluble chemicals |
| Low water temperature | Operating temperature of only 20-30°C |
| Low maintenance | Compared to chemical addition and pH adjustment methods |
| Low operating costs | Compared to other types of evaporation and chemical dosing |
| Low sludge volumes | Compared to chemical precipitation of metals and inks |
| Minimal supervision | By plant operators |
| Mixed metal applications | Single step treatment |
| Permit for discharge is NOT required | From water authority if water is recycled |
| pH control is NOT required | For many applications |
| Product recovery | When applied to single product waste stream |
| Removes TDS & sulphates | And soluble salts which are not readily removed by other means |
| Tolerates variable feed concentration | |
| High quality distilled water | Distilled water is suitable for recycle, TDS < 25 ppm |
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