Study on the Treatment Process of Wastewater from Cephalosporin Production

Abstract

Wastewater from cephalosporin production with high bio-toxicity is hard to degrade, and could cause great harm to environment and human being. In the present paper, wastewater from cephalosporin production was processed with biochemical treatments as follows: hydrolytic acidification- Up-flow Anaerobic Sludge Bed(UASB)-Sequencing Batch Reactor Activated Sludge Process(SBR)-biological activated carbon process(BAC). Among them, hydrolytic acidification could efficaciously enhance the biodegradability of wastewater, and greatly increase effects of the subsequent anaerobic-aerobic treatment. The final BAC process could effectively eliminate chemical oxygen demand (COD) and chroma of wastewater treated by aerobic treatment, where COD attained below 100mg/L and chroma was 40. Therefore, wastewater after the previous treatments basically conformed to the discharge standard of " Integrated wastewater discharge standard "(GB8978-1996).