制药废水的组合处理工艺研究

根据制药废水COD值高、含盐量高、色度深、可生化性差等特点,通过对废水进行Fenton氧化/铁炭微电解预处理后,采用水解酸化/升流式厌氧污泥床(up-flow anaerobic sludge bed,简称UASB)/序批式活性污泥法(sequencing batch reactor activated sludge,简称SBR)生物组合处理工艺对制药废水进行进一步处理研究.试验结果表明:经过Fenton氧化/铁炭微电解预处理后,COD去除率达到30%,提高了废水的可生化性;在一定的试验条件下,水解酸化有一定效果但并不理想;在优化实验条件下,UASB处理工艺对COD的去除率为30%～55%;SBR处理中,12,h和24,h周期SBR对COD的去除率分别为35%～45%和60%左右.

Study on the Combined Treatment Process of Pharmaceutical Wastewater

According to the feature of the high COD and recalcitrant organic compounds in pharmaceutical wastewater, the combination of fenton/ferric-carbon microelectrolysis/hydrolytic acidification/up-flow anaerobic sludge bed （UASB）/ sequenc-ing batch reactor （SBR）activated sludge process is adopted to treat the wastewater. The results show that the removal ratios of COD can reach 30% by the pretreatment process of Fenton oxidation/ferric-carbon microelectrolysis and hence the biodegradability is improved; under certain conditions, the hydrolytic acidification process has some but not obvious effect; the removal ratios of COD can reach 30% - 55% by the up-flow anaerobic sludge bed process under some certain conditions; when the operating time is 12h and 24h, the removal ratios of COD can reach 35 - 45% and 60% respectively after the sequencing batch reactor activated sludge process.