摘要
采用固液分离—改良型UASB(上流式厌氧污泥床反应器)厌氧消化—SBBR(序批式生物膜反应器)好氧生化—高效复合絮凝组合工艺处理甘薯燃料乙醇糟液,处理出水各项敏感环境因子均达到国家《污水综合排放标准》(GB8978-1996)一级标准.在改良型UASB进水COD36720～43890mgL-1、SS8370～11400mgL-1条件下,维持反应温度(35±3)℃,其容积负荷可达到28.86～34.5g(COD)L-1d-1,对COD、SS、VFA去除率分别为92%～93%、89%～91.5%、96%～98%.在12～30℃时,厌氧消化液SS360～530mgL-1,BOD400～530mgL-1,NH3-N120～163mgL-1,S2-40～50mgL-1,经两级SBBR好氧生化处理后,分别降低到40～60mgL-1、250～310mgL-1、7.2～13.8mgL-1、低于0.5mgL-1.考察3种絮凝剂的混凝效果,以高效复合絮凝剂效果最好,生化处理出水经该絮凝剂混凝处理后,COD、TP和色度分别降低到低于100mgL-1、0.5mgL-1和40倍.
A combined process,solid-liquid separation-anaerobic digestion with improved UASB （Up-flow Anaerobic Sludge Bed）-aerobic biological treatment with SBBR （Sequencing Batch Biofilm Reactor）-effective treatment with composite flocculants,which was used to treat wastewater from alcohol fuel production with sweet potato,was studied.It was found that some sensitive environmental pollutants,such as pH,COD,BOD,SS,colority,S 2,NH 3-N and TP,could meet the first level requirements of the national integrated wastewater discharge standard （GB8978-1996）.At （35±3） ℃,COD and SS in the influent ranged from 36 720～43 890 mg L-1 and 8 370～11 400 mg L-1,respectively,the organic load of the improved UASB were 28.86～34.5 g（COD） L-1 d-1.Removal rates of COD,SS and VFA were 92%～93%,89%～91.5% and 96%～98%,too.In the range of 12～30 ℃,SS,BOD,NH 3-N and S 2were degraded by two-stage SBBR from 360～530 mg L-1,400～530 mg L-1,120～163 mg L-1 and 40～50 mg L-1 to 40～60 mg L-1,250～310 mg L-1,7.2～13.8 mg L-1 and lower than 0.5 mg L-1,respectively.Of the three investigated flocculants,the effect of the effective composite flocculants was the best.Concentrations of COD,TP and colority in the effluent were lower than 100 mg L-1,0.5 mg L-1 and 40 times,respectively.
出处
《应用与环境生物学报》
CAS
CSCD
北大核心
2010年第5期730-733,共4页
Chinese Journal of Applied and Environmental Biology
基金
中国科学院成都生物研究所知识创新工程领域前沿项目
"十一五"国家科技支撑计划项目(No.2006BAC02A09)资助~~
