Biochemica were consulted regarding performance issues in a dissolved air flotation (DAF) unit at a wood panel producing factory in Scotland. After initial test work to evaluate an alternative approach to the previous treatment technology, a full scale trial was commissioned.
By implementing the Biochemica treatment chemistry some process changes were required… for the good! This resulted in a simpler, more effective and more cost efficient process. Enhanced liquid/solids separation was achieved over the trial period with solids removal and COD reduction much improved over the previous set-up. An initial COD of 334,000mg/l and 3,200mg/l of TSS was reported prior to treatment. The final discharge COD and TSS was 1,250mg/l and 28mg/l, respectively.