摘要
采用碳纤维水解酸化．MO组合工艺处理制药废水，考察了各个单元水力停留时间、生物接触氧化池中溶解氧质量浓度和MO工艺中体积回流比对COD、NH4＋-N和TN去除效果的影响。结果表明，组合工艺的最佳运行条件为：水解酸化池、A/O工艺的水力停留时间分别为12h和16h，O池中的DO质量浓度为3．6~4．5mg／L、MO工艺的体积回流比为200％~300％。在最佳参数下运行，组合工艺总出水中COD平均为239．4mg／L，NH4＋-N、TN和NO3-的平均质量浓度分别为31．7、76．0、31．3mg／L，出水水质良好，能够达到污水综合排放标准（GB8978--1996）2级标准。
In this study, a technology of hydrolytic acidification -A/O coupling with the biological carbon fiber is employed for treatment of pharmaceutical wastewater. The influences of hydraulic retention time （HRT）, dissolved oxygen concentration and reflux ratio on the removal of COD NH4-N and TN are studied. The results show that the optimal HRT for hydrolysis acidification process and A/O process are 12 h and 16 h （HRTA=4 h, HRTo=12 h）, the optimal DO of the O pool is ranged from 3.6 to 4.5 mg/L and the optimal reflux ratio is ranged from 200% to 300%. Under this optimal condition, the average concentration of COD, NH4-N, TN and NO3-- are 239.4, 31.7, 76.0 and 31.3 mg/L, respectively. The effluent can achieve II grade of integrated wastewater discharge standard （GB 8978-- 1996）.
出处
《水处理技术》
CAS
CSCD
北大核心
2013年第11期63-68,72,共7页
Technology of Water Treatment
基金
北京市科技计划项目-水产养殖水体修复与净化技术研究与示范(Z121100001512008)
关键词
制药废水
水解酸化
A
O
生物碳纤维
pharmaceutical wastewater
hydrolysis acidification
A/O
biological carbon fiber
