Whole Effluent Toxicity (WET) Test and Toxicity Reduction Evaluation (TRE) of A Meat Processing Factory
Whole effluent toxicity (WET) test and toxicity reduction evaluation (TRE) of a meat processing factory were performed with Ceriodaphnia dubia 3-brood toxicity tests. Results showed that the effluent was chronically toxic to C. dubia. It reduced C. dubia reproduction by 50% (IC50) at 69.57% effluent. Chloride was suggested as the primary toxic component in the effluent. Other ions such as sulfate and sodium were shown to additively increased chloride toxicity. Results also showed that the effluent was not acutely toxic to C. dubia. All or 100% of C. dubia were survive during the tests. Effluent dilution with natural water could reduce its toxicity.