For Total Recovery of Process Dragout |
Rinse water and dragout counterflow through several rinses to the process tank. The excess water is removed from the process solution by the EVAPORATIVE TANK™. Heat for evaporation is taken from the process. A level control and solenoid valve can control the water flow into Rinse 3. This level control and air lift pump are available from Poly Products Inc. |
| An alternative heating method if evaporation rates are limited by low temperature processes. Rinse water and dragout are collected in the new heated tank; concentrated dragout is returned to the process tank as needed. (The new tank can also concentrate process solution for added room in the process tank.) | Total Recovery, Cold Process |
| A very high recovery percentage can be achieved with little evaporation. This diagram illustrates the tank layout for economical, partial recovery. |
Near Total Recovery Recovery Rinses |
| Evaporation gph |
Recovery rinses | ||
| 1 | 2 | 3 | |
| 5 10 20 |
83% 90.9 95.2 |
96.7% 99.1 99.8 |
99.3% 99.9+ 99.9+ |
| This table shows recovery percentages with low evaporation rates, and is based on 1 GPH dragout. | |||