Low Maintenance
The EVAPORATIVE TANK ™ uses only tow moving parts - a pump and low cost blower. All molded polyethylene components for solution security, the tank thickness tapres from 3/8" at the top, to 1/2" t the bottom. other materials used are high-temp CPCV polypropylene, PVC and stainless fasteners. The EVAPORATIVE TANK™ is the first atmospheric evaporator with a lifetime no-leak warrenty.

Low Cost
Totaling all costs: initial purchase, energy, maintenance - the EVAPORATIVE TANK ™ is the most cost effective in recovering 100% of the chemicals (dragout) from your rinse water, or in reducing the volume of spent solution and wastewater. When using natural gas for heat, the cost of evaporation is about $.06 per gallon.

APPLICATIONS

PLATING MACHINING PRINTING  Recover Dragout  Reduce Waste Volume  Remove Water from Lubricants  Dewater Wash Water ANODIZING PHOTO PROCESSING General  Chemical Recovery  Spent Solution Reduction  Dewater Spent Rinse Water  Remove Water from ANY Waste Water Solution

If a bath can be air agitated without causing excessive foam, it should be well suited to this method of recovery. High cyanide baths ans still nickels are examples of solutions that that shuld be tested for foaming. A sample can be shaken in a glass jar to see if the foam disappears quickly. Evaporation eliminates water and leaves all the plating chemicasl (and tap water impurities) in the process tank. If your bath is not continuously filtered (as are some bright nickels) you may want to consider using D.I. or R.O water in the rinsing chain.

THE "MAGIC" OF COUNTERFLOW RINSING

The diagram at left illustrates the principles of counterflow rinsing. As the ladle representing dragout is moved from tank #1 to tank #2, the dragout is diluted by a ratio of 10 to 1. Each succcessive tank further increases this dilution ratio by 10 to 1. A tank #7 the dilution ration is 10 million to 1.

 

HOW MUCH RINSE WATER DO YOU NEED? Counterflow rinsing reduces rinse-flow requirements making dragout recovery practical and inexpensive. The table indicates the water needed to prodcue a 5,000:1 ratio using most plating solutions, or 20,000;1 using chromic acid.

DRAGOUT CONCENTRATION  RINSE WATER NEEDED FOR EACH GALLON OR DRAGOUT* ONE RINSE COUNTERFLOWING RINSES 2 3 4 5 MOST PLATING SOLUTIONS 5,000 71 17 8 5 CHROME, 40 oz./gal. 20,000 141 27 12 7 *For 2 GPH dragout, multipy by two, for 1/2 GPH mulitply by .5, etc. (flow rates are rounded to the nearest gallon)

FEATURES    and SPECIFICATIONS

---

Poly products, Inc.
777 East 82nd Street
Cleveland, Ohio 44103-1817
Phone: 216.391-7659  Fax: 216.881.8991