Division BAT 4 In order to reduce the generation and the pollution load of waste water from wood storage and preparation, BAT is to use a combination of the techniques given below.
United Kingdom
| Technique | Applicability | |
|---|---|---|
| a | Dry debarking (description see Section 1.7.2.1) | Restricted applicability when high purity and brightness is required with TCF bleaching |
| b | Handling of wood logs in such a way as to avoid the contamination of bark and wood with sand and stones | Generally applicable |
| c | Paving of the wood yard area and particularly the surfaces used for the storage of chips | Applicability may be restricted due to the size of the wood yard and storage area |
| d | Controlling the flow of sprinkling water and minimising surface run-off water from the wood yard | Generally applicable |
| e | Collecting of contaminated run-off water from the wood yard and separating out suspended solids effluent before biological treatment | Applicability may be restricted by the degree of contamination of run-off water (low concentration) and/or the size of the waste water treatment plant (large volumes) |
The BAT-associated effluent flow from dry debarking is 0,5 – 2,5 m3/ADt.