Study on the Treatment Process of Wastewater from Cephalosporin Production

Haixia Duan

doi:10.5539/jsd.v2n2p133

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

Highlights

Wastewater from cephalosporin production has complicated components, where organic substances and soluble or colloid solid substances are all at a high level with a great deal of suspended matter, and pH value varied often, contains biological toxicity substances of unbiodegradable and bacteriostatic antibiotics
Wastewater from cephalosporin production was processed with biochemical treatments as follows: hydrolytic acidificationUASB-SBR-BAC process, which guaranteed that wastewater basically conformed to the discharge standard of " Integrated wastewater discharge standard "(GB8978-1996)
Adsorption capacity of BAC was investigated, where granule fragmentary carbon with high adsorption capacity for organic substances was selected as biological carrier, diluted pig manure sludge was undertaken to aerobic acclimatization and culture in lab scale, which was applied as biological source to prepare BAC for investigation. 5d later, through the observation of microscope, a layer biofilm was coated in the surface of BAC, which indicated that preparation of BAC has tended to be mature and could be undertaken to treat with wastewater from cephalosporin production

Summary

Introduction

Wastewater from cephalosporin production has complicated components, where organic substances and soluble or colloid solid substances are all at a high level with a great deal of suspended matter, and pH value varied often, contains biological toxicity substances of unbiodegradable and bacteriostatic antibiotics. Wastewater from cephalosporin production was processed with biochemical treatments as follows: hydrolytic acidificationUASB-SBR-BAC process, which guaranteed that wastewater basically conformed to the discharge standard of " Integrated wastewater discharge standard "(GB8978-1996). Wastewater was sampled from a pharmacy factory of Liaoning Province.

Schematic diagram of processes

UASB reaction

SBR trial

BAC trial

Conclusions