The removal of disinfection by-products formation potential(DBPFP) in artificially intensified biological activated carbon(IBAC) process which is developed on the basis of traditional ozone granular activated carbon w...The removal of disinfection by-products formation potential(DBPFP) in artificially intensified biological activated carbon(IBAC) process which is developed on the basis of traditional ozone granular activated carbon was evaluated. By IBAC removals of 31% and 68% for THMFP and HAAFP were obtained respectively. Under identical conditions, the removals of the same substances were 4% and 32% respectively only by the granular activated carbon(GAC) process. Compared with GAC, the high removal rates of the two formed potential substances were due to the increasing of bioactivity of the media and the synergistic capabilities of biological degradation cooperating with activated carbon adsorption of organic compounds. A clear linear correlation(R 2=0.9562 and R 2=0.9007) between DOC HAAFP removal rate and Empty Bed Contact Time(EBCT) of IBAC process was observed, while that between THMFP removal rate and EBCT of GAC was R 2=0.9782. In addition certain linear correlations between THMFP, HAAFP and UV 254 (R 2=0.855 and R 2=0.7702) were found for the treated water. For IBAC process there are also more advantages such as long backwashing cycle time, low backwashing intensity and prolonging activated carbon lifetime and so on.展开更多
在多级折流板反应器生物处理装置中,采用活性炭为载体人工固定化生物处理合成染料废水,出水水质稳定,出水中的烷烃肽链变短;其对CODCr和BOD5的去除率可达96.46%、99.77%;对SO42-和钙镁总量的去除效率超过80.37%、78.66%;折流板反应器的...在多级折流板反应器生物处理装置中,采用活性炭为载体人工固定化生物处理合成染料废水,出水水质稳定,出水中的烷烃肽链变短;其对CODCr和BOD5的去除率可达96.46%、99.77%;对SO42-和钙镁总量的去除效率超过80.37%、78.66%;折流板反应器的容积负荷率Nv可达2.8 kg COD/(d.m3)。活性炭经生物固定化后,不仅不会影响它的处理效果,还会延长活性炭的使用寿命;当冲击性有机负荷发生时,固定化生物活性炭能够承受并能很快恢复。展开更多
文摘The removal of disinfection by-products formation potential(DBPFP) in artificially intensified biological activated carbon(IBAC) process which is developed on the basis of traditional ozone granular activated carbon was evaluated. By IBAC removals of 31% and 68% for THMFP and HAAFP were obtained respectively. Under identical conditions, the removals of the same substances were 4% and 32% respectively only by the granular activated carbon(GAC) process. Compared with GAC, the high removal rates of the two formed potential substances were due to the increasing of bioactivity of the media and the synergistic capabilities of biological degradation cooperating with activated carbon adsorption of organic compounds. A clear linear correlation(R 2=0.9562 and R 2=0.9007) between DOC HAAFP removal rate and Empty Bed Contact Time(EBCT) of IBAC process was observed, while that between THMFP removal rate and EBCT of GAC was R 2=0.9782. In addition certain linear correlations between THMFP, HAAFP and UV 254 (R 2=0.855 and R 2=0.7702) were found for the treated water. For IBAC process there are also more advantages such as long backwashing cycle time, low backwashing intensity and prolonging activated carbon lifetime and so on.
文摘为提高固定化生物活性炭（IBAC）出水的生物安全性,采用在IBAC滤池底部增加石英砂垫层的技术措施.利用人工筛选驯化的优势菌种对活性炭进行固定化,并以臭氧氧化水作为进水,研究不同石英砂垫层对IBAC净水效果的影响,从而确定最佳石英砂垫层厚度.结果表明：与未加石英砂垫层的IBAC相比,有石英砂作垫层的IBAC出水效果更好,其中出水浊度要低11.5%,对细菌总数和颗粒物的去除率要高34.7%和26.3%,而对UV254和CODMn的去除效果差别不大,因此,石英砂垫层能够有效保证出水水质的生物安全性.石英砂垫层厚度与IBAC出水浊度、细菌总数和对颗粒数去除率的相关系数分别为0.9649、0.8739和0.9888.根据曲线分析结果,最终确定出IBAC的最佳石英砂垫层厚度范围为200～300 mm.
文摘在多级折流板反应器生物处理装置中,采用活性炭为载体人工固定化生物处理合成染料废水,出水水质稳定,出水中的烷烃肽链变短;其对CODCr和BOD5的去除率可达96.46%、99.77%;对SO42-和钙镁总量的去除效率超过80.37%、78.66%;折流板反应器的容积负荷率Nv可达2.8 kg COD/(d.m3)。活性炭经生物固定化后,不仅不会影响它的处理效果,还会延长活性炭的使用寿命;当冲击性有机负荷发生时,固定化生物活性炭能够承受并能很快恢复。
