全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

低溶解氧下NaCl和Na_2SO_4盐度对SBR脱氮效果和污泥沉降性的影响

Keywords: 盐度,脱氮,沉降性,胞外聚合物

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用序批式生物反应器(SBR)处理含盐废水,在醋酸钠作为碳源的条件下,考察Na2SO4和NaCl盐度((ρ(Na2SO4))和ρ(NaCl))对脱氮效果和污泥沉降性能的影响.结果表明:低溶解氧(0.3mg/L)下通过逐渐提高盐度,当ρ(Na2SO4)和ρ(NaCl)分别低于18和14g/L时,氨氮去除率(η(NH+4-N))均高于80%,总氮去除率(η(TN-N))均高于70%.为了进一步探讨盐度冲击对脱氮效果的影响,一次性投加14g/L的Na2SO4和NaCl废水,SBR反应器运行初期,η(NH+4-N)和η(TN-N)均低于55%,随着运行时间的增加,η(NH+4-N)和η(TN-N)分别提高至80%和70%.同时,盐度能影响活性污泥的沉降性,当盐度为0g/L时,ρ(EPS)为680mg/L,SVI为100mL/g;当ρ(Na2SO4)为14g/L时,活性污泥ρ(EPS)达到950mg/L,SVI为75mL/g;当ρ(NaCl)为14g/L时,活性污泥ρ(EPS)达到1200mg/L,SVI为65mL/g.NaCl和Na2SO4能提高SBR活性污泥的沉降性能.

References

[1]  AHMET U,FIKRET K.Salt inhibition on biological nutrient removal from saline wastewater in a sequencing batch reactor[J].Enzyme and Microbial Technology,2004,34(3/4):313-318.
[2]  邹士洋,张建平,吴俊荣,等.生物技术处理高含盐废水的研究进展[J].工业水处理,2008,28(11):1-4.ZOU Shi-yang,ZHANG Jian-ping,WU Jun-run,et al.Biological technology for the treatment of high saline wastewater[J].Industrial Water Treatment,2008,28(11):1-4.(in Chinese)
[3]  叶剑锋.废水生物脱氮处理新技术[M].北京:化学工业出版社,2006:1-4.
[4]  GLASS C,SILVERSTEIN J.Denitrification of highnitrate,high-salinity waste water[J].Water Research,1999,33(1):223-229.
[5]  崔有为,王淑莹,孔祥智,等.活性污泥处理系统抗盐度冲击的能力[J].中国给水排水,2003,19(11):12-15.CUI You-wei,WANG Shu-ying,KONG Xiang-zhi,et al.Resistance to salinity shock in activate sludge treatment system[J].China Water&Wastewater,2003,19(11):12-15.(in Chinese)
[6]  周鹏.盐度冲击对活性污泥系统性能影响的研究[J].环境科学与技术,2011,34(5):65-68.ZHOU Peng.Effect of salinity shock on activated sludge system[J].Environmental Science&Technology,2011,34(5):65-68.(in Chinese)
[7]  WANG H W.Research progress of extracellular polymeric substances in waste water treatment[J].Journal of East China University of Science and Technology,2001,27(8):1-7.
[8]  周群英,高廷耀.环境工程微生物学[M].2版.北京:高等教育出版社,2004:157-164.
[9]  蔡晶,芮铭先,芮尊元.H/O生化处理系统中硫酸盐的转化规律[J].环境保护,2001,10:19-23.CAI Jing,RUI Ming-xian,RUI Zun-yuan.Transformation of sulfate in H/O biochemical treatment system[J].Environmental Protection,2001,10:19-23.(in Chinese)
[10]  石建敏,黄新文,林春绵,等.无机盐对微生物接触氧化处理法的影响[J].浙江工业大学学报,2003,31(1):97-100.SHI Jian-min,HUANG Xin-wen,LIN Chun-mian,et al.Effects of inorganic salt on biological contact oxidation process[J].Journal of Zhejiang University of Technology,2003,31(1):97-100.(in Chinese)
[11]  ZHENG Y M,YU H Q,SHENG G P,et al.Physical and chemical characteristics of granular activate sludge from a sequencing batch airlift reactor[J].Process Biochemistry,2005,40(2):645-650.
[12]  LIU H H,FANG H P.Exaction of extracellular polymeric substance(EPS)of sludges[J].Journal of Biotechnology,2002,95(3):249-256.
[13]  WANG Z P,LIU L L,Yao J,et al.Effects of extracellular polymeric substances on aerobic granulation in sequencing batch reators[J].Chemosphere,2006,63(10):1728-1735.
[14]  周建,龙腾锐,苗利利.胞外聚合物EPS对活性污泥沉降性能的影响研究[J].环境科学学报,2004,24(4):613-617.ZHOU Jian,LONG Teng-rui,MIAO Li-li.Effect of extracellular polymeric substances(EPS)on sedimentation of activated sludge[J].Acta Scientiae Circumstantiae,2004,24(4):613-617.(in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133