Toxicity assessment of industrial wastewater by microbial testing method

Abstract

In this study the commercial Microtox® test is used to assess the individual response of existing wastewater pretreatment facilities in several high-intensive pollution industries. To control the discharge sources to the wastewater treatment facilities (WWTP), public WWTP with high-intensive pollution industries in three industrial districts are evaluated with their influents to determine the primary contributor of toxicants. From the tested toxicity results, the relationship between organic loads and toxic discharges exhibits a positive conjunction in the high-intensive pollution industries. If these industries can enhance their operating performance in the pretreatment system, the toxicity of their discharges can be effectively reduced.