TECHNOLOGIES FOR WASTEWATER TREATMENT FROM THE FISH PROCESSING INDUSTRY: REUSE ALTERNATIVES

Abstract

For the fish processing industry, the treatment proposal for effluents
encounters some difficulties, such as high concentration of organic matter and
solids in suspension, and lack of uniformity in the composition. Considering
this problem, the objective was to evaluate the removal efficiency for
different effluent treatment technologies of the mentioned industry and
the possibility of reuse. In order to do so performed a survey of effluent
treatment systems, verifying the removal rate for pH, total suspended solids
(TSS mgL-1), biochemical oxygen demand BOD (mgL-1), chemical oxygen
demand COD mgL-1), total nitrogen TN (mgL-1), total phosphorus TP (mgL-1)
and oils and greases (mgL-1). The concentrations found were compared to
the limit values imposed by the standards for industrial reuse. As a result, it
has been found that the combination of multiple processes, using advanced
treatment techniques, is appropriate, especially where the purpose is to
reuse and/or recycle.