TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F 9/04)
| Subclass | Title |
|---|---|
| 1/00 | Treatment of water, waste water, or sewage (C02F 3/00-C02F 9/00 take precedence) |
| 1/02 | Treatment of water, waste water, or sewage (C02F 3/00-C02F 9/00 take precedence) by heating |
| 1/04 | Treatment of water, waste water, or sewage (C02F 3/00-C02F 9/00 take precedence) by heating by distillation or evaporation |
| 1/06 | Treatment of water, waste water, or sewage (C02F 3/00-C02F 9/00 take precedence) by heating by distillation or evaporation Flash evaporation |
| 1/08 | Treatment of water, waste water, or sewage (C02F 3/00-C02F 9/00 take precedence) by heating by distillation or evaporation Thin film evaporation |
