摘要
研究了UASB-SBR工艺对生活污水中磺胺二甲基嘧啶(SM2)的去除特性,并且在兼顾去除SM2和脱氮除磷的基础上,对工艺参数进行了优化。试验结果表明,UASB-SBR工艺对SM2有较好的去除效果,当温度为20℃,UASB反应器水力停留时间(HRT)为8 h,COD容积负荷为0.5～1.2 kg.m-.3d-1,进水pH在7.0～8.0时,COD、SM2平均去除率分别为70%、35%。在氮磷及SM2去除效果不佳的情况下,后续SBR反应器,当曝气时间为3 h,污泥龄(SRT)为20 d时,COD、TN、TP出水浓度均达到城镇污水处理厂污染物排放标准(GB 18918-2002)中的一级标准,SM2出水质量浓度为5～8μg·L-1,SM2总去除率为90%。厌氧段和好氧段对SM2的平均去除率分别为35%和55%,这说明SM2在好氧条件下更容易被降解。
Lab-scale experiments were conducted to investigate the removal property of sulfamethazine （SM2） by UASB-SBR process. Based on the removal of SM2,nitrogen and phosphorus, the operational parameters were optimized.The results indicated that UASB-SBR process had high removal efficiency on SM2.When the temperature was 20℃,the HRT was 8 h, COD volume loading ranged from 0.5 to 1.2 kg·m^3·d^-1, pH was 7.0-8.0, the average removal efficiency of COD and SM2 were 70% and 35%, respectively. The SBR reactor was followed the UASB when the nitrogen, phosphorus and SM2 had low removal efficiency. When the aeration time and SRT were 3 h,20 d, respectively, the effluent concentration of COD,TN and TP reach the First Grade of Municipal Wastewater Treatment Plant Emission Standards （GB 18918--2002 ）.The effluent concentration of SM2 ranged from 5 to 8 Ixg ＂L-~ and the total removal efficiency of SM2 was 90%. The anaerobic and aerobic tanks contributed 35% and 55% of the totally removed SM2, respectively, meaning SM2 was more likely to be degraded in the condition of aerobic.
出处
《水处理技术》
CAS
CSCD
北大核心
2011年第4期84-87,共4页
Technology of Water Treatment
基金
高等学校博士点专项科研基金(20090075120007)
上海科委项目(09230500200)
中央高校基本科研业务费专项资金项目(10D011308)
