改性膨润土和海泡石在污水处理中的实验研究
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摘要
将膨润土在400℃高温焙烧2 h,海泡石在500℃高温焙烧4 h,制得改性膨润土和海泡石。将两者以不同的比例混合加入新河污水500 m L,充分搅拌15 min,静置12 h,取上清液150 m L,测定其pH值和浊度,考察改性膨润土和海泡石在不同配比下对污水处理的效果,并将天然膨润土和海泡石以相应的配比用于污水处理作为对照。结果表明,在使用改性膨润土和海泡石混合净水剂后,污水偏碱性,pH值平均为8. 09。当膨润土∶海泡石为1∶3时,浊度最小为4. 4,处理效果最好。
The bentonite was calcined at 400 °C for 2 h,and the sepiolite was calcined at 500 °C for 4 h to obtain modified bentonite and sepiolite. Mix the two into 500 m L of Xinhe Sewage in different proportions,stir for 15 min,let stand for 12 h,take 150 m L of supernatant,determine the pH value and turbidity,and investigate the modified bentonite and sepiolite. The effect of sewage treatment on the ratio,and the use of natural bentonite and sepiolite in the corresponding ratio for sewage treatment as a control. The results showed that after using modified bentonite and sepiolite mixed water purifying agent,the sewage was alkaline,and the average pH value was 8. 09.When bentonite ∶ sepiolite is 1∶ 3,the turbidity is minimum 4. 4,the treatment effect is best.
The bentonite was calcined at 400 °C for 2 h,and the sepiolite was calcined at 500 °C for 4 h to obtain modified bentonite and sepiolite. Mix the two into 500 m L of Xinhe Sewage in different proportions,stir for 15 min,let stand for 12 h,take 150 m L of supernatant,determine the pH value and turbidity,and investigate the modified bentonite and sepiolite. The effect of sewage treatment on the ratio,and the use of natural bentonite and sepiolite in the corresponding ratio for sewage treatment as a control. The results showed that after using modified bentonite and sepiolite mixed water purifying agent,the sewage was alkaline,and the average pH value was 8. 09.When bentonite ∶ sepiolite is 1∶ 3,the turbidity is minimum 4. 4,the treatment effect is best.
引文
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[14]聂利华.海泡石用于含铅,镉,汞废水的处理[J].化学世界,1990,31(8):344-346.Nie Lihua. Sepiolite used for treatment of wastewater of lead andcadmium and mercury[J]. Chemical World,1990,31(8):344-346.
[15]聂利华.海泡石在镀镍废水处理中的应用[J].电镀与环保,1991,11(2):20-22.Nie Lihua. Sepiolite used for treatment of wastewater of nickel[J].Electroplating and Environment Protection,1991,11(2):20-22.
[2] Danis T G,Aibanis T A. Removal of chlorinated phenols from a-queous solutions by adsorption on alumina pillared clays and meso-porous aluminum phosphates[J]. Water Res,1998,32(2):295-302.
[3]杨学朝.膨润土改性处理重金属废水试验研究[D].西安:西安科技大学,2009.
[4]胡恭任,于瑞莲.酸改性膨润土处理含铅废水[J].中国矿业,2007,16(2):100-102.Hu Gongren,Yu Ruilian. Lead wastewater treatment using modifiedbentonite[J]. China Mining,2007,16(2):100-102.
[5]丁树理,彭苏萍,刘钦甫,等.膨润土吸附重金属离子的影响因素初探[J].岩石矿物学杂志,2001,20(4):579-582.Ding Shuli,Peng Suping,Liu Qinpu,et al. Affect factors adsorbingheavy metal using bentonite[J]. Petrology and Mineralogy,2001,20(4):579-582.
[6]孙家寿,吴晓云.膨润土对铬、磷的吸附性能研究[J].非金属矿,1992(3):33-35.Sun Jiashou,Wu Xiaoyun. Study on adsorption properties of ben-tonite for chromium and phosphorus[J]. Non-Metallic Mines,1992(3):33-35.
[7]朱利中,任剑盛,张建英,等.溴化十六烷基三甲铵膨润土对印染废水的脱色作用[J].水处理技术,1994,20(1):56-60.Zhu Lizhong,Ren Jiansheng,Zhang Jianying,et al. Decolorizationof bentonite for dyeing wastewater[J]. Water Treatment Technolo-gy,1994,20(1):56-60.
[8]李冬,陈华军.海泡石在重金属废水处理中的应用[J].环境科学导刊,2013,32(1):78-80.Li Dong,Chen Huajun. The application of sepiolite in the treatmentof heavy metal wastewater[J]. Introduction to Environment Sci-ence,2013,32(1):78-80.
[9]杭瑚.膨润土—吸附—絮凝法处理废水[J].环境科学,1993(1):42-45.Hang Hu. Wastewater treatment by bentonite-adsorption-floccula-tion[J]. Environment Science,1993(1):42-45.
[10]肖利萍,潘纯林,邓特钢.膨润土在水处理中的应用研究与展望[J].水资源与水工程学报,2010,8(4):28-33.Xiao Liping,Pan Chunlin,Deng Tegang. Study on the applicationof bentonite in water treatment[J]. Water Resources and WaterEngineering,2010,8(4):28-33.
[11]孙晨光,高丽君,宋黑,等.膨润土在污水处理中的应用研究与展望[J].河北建筑科技学院学报,2005,22(3):18-19.Sun Chenguang,Gao Lijun,Song Hei,et al. Study on the applica-tion of bentonite in wastewater treatment[J]. Journal of HebeiConstruction Science and Technology College,2005,22(3):18-19.
[12]曹积飞,杨秋荣,李英杰,等.粘土矿物对重金属有害元素吸附性研究[J].环境科学与技术,2008,31(1):42-44.Cao Jifei,Yang Qiurong,Li Yingjie,et al. Study on the clay for theadsorption of harmful heavy metals[J]. Environment Science andTechnology,2008,31(1):42-44.
[13]高廷耀.蒙脱土和海泡石对水中苯、甲苯和乙苯的吸附研究[J].同济大学学报,1993,21(2):139-144.Gao Tingyao. Study on adsorption of bentonite and sepiolite forbenzene[J]. Journal of Tongji University,1993,21(2):139-144.
[14]聂利华.海泡石用于含铅,镉,汞废水的处理[J].化学世界,1990,31(8):344-346.Nie Lihua. Sepiolite used for treatment of wastewater of lead andcadmium and mercury[J]. Chemical World,1990,31(8):344-346.
[15]聂利华.海泡石在镀镍废水处理中的应用[J].电镀与环保,1991,11(2):20-22.Nie Lihua. Sepiolite used for treatment of wastewater of nickel[J].Electroplating and Environment Protection,1991,11(2):20-22.