摘要
采用自行设计的新型厌氧反应器处理造纸黑液酸析废水,并基于FISH技术及其它常规手段,对运行期间反应器内的处理效能、厌氧颗粒污泥比产甲烷活性、功能菌群落之间的变化关系进行了分析探讨。经过71天的运行,最终进水COD为8700mg/L,COD去除率为49.46%,水力停留时间为37.38h,容积负荷为5.59 kg COD/(m3·d),污泥最大比产甲烷速率达到355.36 m LCH4/(d·g),食丁酸盐产氢产乙酸菌相对丰度为(79.87±0.77)%,比运行开始时提高了50.87%,产甲烷菌相对丰度为(81.08±1.36)%,提高了26.39%,耗氢产乙酸菌相对丰度为(19.51±1.09)%,提高了2.14倍。证明新型厌氧反应器对厌氧污泥的颗粒化有显著效果,对黑液等高浓度高毒性废水有良好处理效能。
A new lab-scale Internal Circulation （IC） anaerobic reactor fed by black liquid acid precipited wastewater was operated with increasing volumetric loading rate （VLR） under normal temperature. The reactor performance and the relationship between functional bacteria community structure and bioactivity in the anaerobic granular sludge were investigated by FISH and other conventional methods during the operation. Eventually, as the inlet COD was 8700mg/L,the COD removal rate was 49.46% ,the HRT was 37.38h,the VLR was 5.59 kgCOD/（ m^3 ·d） and the SMA was 355.36 mLCH4/（d ·g）. Compared with the seed sludge, the abundance of the butyrate -oxidi- zing acetogenic bacteria Syntrophomonas spp. increased by 50.87% , the homoacetogenic bacteria Aeetobacterium species E. limosum increased by 214% , and methanomicrobium Methanomicrobiales increased by 26.39% , after 71 days operation. It was demonstrated that the anaerobic sludge granulation was significant in the new anaerobic reac- tor and such wastewater with high concentration and toxic like black liquid can be treated effectively by using the new anaerobic reactor.
出处
《造纸科学与技术》
北大核心
2014年第6期148-151,161,共5页
Paper Science & Technology
基金
广东省战略性新兴产业核心技术攻关项目(2012A032300015)
广东省高等学校高层次人才项目
