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This study investigates the effects of pharmaceutical industry sewage on effluent chemical characteristics of surrounding surface water in Tehran. The study was conducted using two in vitro methods and a method of environmental assessment. In vitro assessment and spatial analysis were conducted on inlet and outlet sewage of six pharmaceutical companies in different regions of Tehran. The results showed surveyed companies often use anaerobic treatment process method that reduces the environmental pollution, especially the reduction of negative effects on surface water around them.

Evaluation of Pharmaceuticals Sewage Effects on the Chemical Properties of Surrounding Surface Waters around Tehran