JAUE2018-085 Optimized operational parameters for treating organic wastewater

Abstract

Many attentions have been devoted to the fate of antibiotics such as ȕ-antibiotics in the soil and water, especially in the developing countries. Many Studies have shown that a large number of ȕ-lactam antibiotics and intermediates existing in the environment which are harmful to human health and ecosystem. The problems of their fate in the 
environment have to be clearly identified to prevent any environmental pollution. Therefore, it’s necessary to research the biodegradation law of ȕ-lactam antibiotics and intermediates if the antibiotics entered the sewage treatment plants (SATS), and to estimate the removals of SATs. Ceftriaxone sodium, cefoperazone sodium, ampicillin sodium, amoxicillin, 6-APA and 7-ACA, typical ȕ-antibiotics, were chosen as the analytes. Typical biologic treatment active sludges, which has been widely used in the developing countries, was transformed in 
experimental at laboratory-sized in this study to measure the ȕ-lactam antibiotics and intermediates’ removal efficiency during the biologic treatment on different carbon sources, temperature, dissolved oxygen and pH value conditions. When using glucose as plus carbon source, the effect of ȕ-lactam antibiotics and intermediate was best, and the optimum mass ratio of glucose and analytes was 1:8. Considering the treatment effect and the processing 
cost factors, then gained a relatively appropriate condition: controlling temperature at the range from 25 to 35 ˈ ,pH value in neutral and dissolved oxygen at 2.5 mg/L.