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.

Keywords

• fish processing; industrial reuse