摘要
通过Al 3+、Cu2+对驯化污泥的破坏性试验,研究了各浓度的Al 3+、Cu2+对活性污泥TTC-脱氢酶活性、比好氧摄取速率(SOUR)、CODCr去除率和金属离子生物降解前后浓度变化的影响,以探索废水中金属离子对活性污泥微生物活性及整个生态环境的影响.试验结果表明,废水中存在的金属离子对活性污泥微生物TTC-脱氢酶活性和微生物SOUR会有一定的影响.金属离子浓度小于20mg/L时对微生物活性有一定的促进作用,浓度过大则有一定的毒害和抑制作用.经过72h的活性污泥生物处理,活性污泥微生物对Al 3+和Cu2+的去除率会随着投加浓度的增加而降低,当Al 3+和Cu2+浓度增加到60 mg/L以上时,Al 3+和Cu2+的最低去除率分别为74.2%和70.9%.
The study investigated the effects of Al 3＋and Cu2＋on TTC-dehydrogenase activity,specific aerobic uptake rate（SOUR）,removal rate of CODCrand metal ions on the change of concentration before and after biodegradation by destructive experiments on domesticated sludge by Al 3＋and Cu2＋concentration changes,it indicates the impact of metal ions in wastewater on microbial activity of activated sludge and the entire ecological environment.The study results showed that the presence of metal ions in wastewater has a certain effect on the activity of microbial TTC-dehydrogenase and the SOUR of activated sludge.When the concentration of metal ions is less than 20 mg/L,it can promote the microbial activity,and the concentration is too large to have certain toxicity and inhibition.After 72 hof biological treatment of activated sludge,the removal rates of Al 3＋and Cu2＋by microorganisms from activated sludge will decrease with the increasing of the concentrations of Al 3＋and Cu2＋.When the concentrations of Al 3＋and Cu2＋were increased to above 60 mg/L,the removal rates of Al 3＋and Cu2＋are 74.2% and 70.9%respectively.
作者
王森
程赛鸽
肖雪莉
来凡
胡磊鑫
张安龙
WANG Sen;CHENG Sai ge;XIAO Xue li;LAI Fan;HU Lei xin;ZHANG An long(School of Environmental Science and Engineering,Shaanxi Province key Laboratory of Papermaking Techno ogy and Specialty Paper,Shaanxi University of Science ＆ Technology,Xi＇an 710021,China)
出处
《陕西科技大学学报》
CAS
2018年第4期23-27,41,共6页
Journal of Shaanxi University of Science & Technology
基金
教育部中国博士后科研基金项目(2016M602747)
陕西省科技厅协同创新科技计划项目(2015XT-14)
陕西省教育厅重点实验室科研计划项目(16JS015)
西安市科技计划项目(2017068CG/RC031(SXKD002)
咸阳市科技计划项目(2015k02-14)
陕西科技大学校级大学生创新创业训练计划项目(2017-106)
关键词
造纸废水
金属离子
协同作用
微生物活性
残留
papermaking wastewater
metal ion
synergy
microbial activity
residue
