Division BAT 73: In order to reduce the organic load discharged from a MDA plant to further waste water treatment, BAT is to recover organic material using one or a combination of the techniques given below.
United Kingdom
| Technique | Description | Applicability | |
|---|---|---|---|
| a. | Evaporation | See Section 12.2. Used to facilitate extraction (see technique b) | Generally applicable |
| b. | Extraction | See Section 12.2. Used to recover/remove MDA | Generally applicable |
| c. | Steam stripping | See Section 12.2. Used to recover/remove aniline and methanol | For methanol, the applicability depends on the assessment of alternative options as part of the waste water management and treatment strategy |
| d. | Distillation | See Section 12.2. Used to recover/remove aniline and methanol | |