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以微生物固化曝气技术为核心的污水处理系统为研究对象,研究养猪废水中的COD、N、P、总有机碳及抗生素(土霉素、四环素、金霉素、强力霉素、罗红霉素、阿奇霉素、氧氟沙星、恩诺沙星和环丙沙星)在不同处理单元的动态变化.结果表明,微生物固化曝气技术能有效去除常规污染物,除TP外,COD和NH+4-N的出水浓度均能达到《畜禽养殖业污染物排放标准》(GB 18596—2001);该技术对抗生素的去除效果依抗生素的种类而变,对4种四环素类抗生素-的去除率高达85%以上;对大环内酯类中的阿奇霉素的去除率为62.8%;对大环内酯类中的罗红霉素和氟喹诺酮类抗生素则基本无效.微生物固化曝气技术能有效去除总有机碳、COD、NH+4-N和四环素类抗生素,对TP和其它抗生素类,需要进一步优化处理系统的运行条件,或改善固化微生物的组成,以提高这类污染物的处理效果.
The wastewater treatment system with microbial solidification aeration as the core was studied to study the effects of COD, N, P, total organic carbon and antibiotics (oxytetracycline, tetracycline, chlortetracycline, doxycycline, The results showed that the microbial solidification aeration technology can effectively remove the conventional pollutants, except TP, COD and NH + 4-N effluent concentrations can reach the “livestock and poultry breeding pollutant discharge standards” (GB 18596-2001); the technology of antibiotic removal effect varies with the type of antibiotics, the four kinds of tetracycline antibiotics - removal The rate of azithromycin removal in macrolides was 62.8%, while the use of roxithromycin and fluoroquinolone antibiotics in macrolides was almost ineffective. Microbial immobilized aeration was effective Removal of total organic carbon, COD, NH + 4-N, and tetracycline antibiotics requires further optimization of the system operating conditions for TP and other antibiotics, or improvement of the composition of the solidified microorganisms in order to improve the handling of such pollutants.