JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2015, Vol. 45 ›› Issue (2): 82-88.doi: 10.6040/j.issn.1672-3961.0.2014.299

Previous Articles     Next Articles

Efficiency and mechanism of ferric salt enhanced biological phosphorus removal

SUN Cuiping, ZHOU Weizhi, ZHAO Haixia   

  1. School of Environmental Science and Engineering, Shandong University, Jinan 250100, Shandong, China
  • Received:2014-10-27 Revised:2015-03-18 Online:2015-04-20 Published:2014-10-27

PDF (PC)

734

Abstract: An efficient phosphorus (P) removal bacterium strain was screened from deep-sea bacteria, and phosphorus removal efficiency and mechanism by iron enhanced biological treatment were studied in the high salinity synthetic wastewater. The effects of molar ratio Fe(III)/P, initial pH on phosphorus removal and kinetics of iron enhanced biological phosphorus removal were investigated by batch tests, and the surface morphology of bacteria was studied by SEM-EDS (scanning electron microscopy-energy dispersive X-ray spectroscopy). Results showed that the phosphorus removal efficiency of iron enhanced biological treatment was high and stable at more than 95% compared to those of independent iron and biological treatment. Removal efficiency of phosphorus reached the maximum of 98.5% with molar ratio of Fe(III) and P being 1, which increased 30% than that of the biological treatment, whereas the maximum phosphorus removal was 90% with molar ratio of Fe(III) and P ranging from 2 to 3 by independent iron treatment. Phosphorus removal was mainly ascribed to bacterial growth and aided by iron, and pH was kept stable at about 7.2 when molar ratio of Fe(III) and P being not more than 1. Phosphorus removal was mainly by chemical precipitation with molar ratio of Fe(III) and P being more than 1 because that the pH reduced to 5.5 or even lower by Fe(III) hydrolysis and significantly influenced bacterial growth. Phosphorus removal was kept at above 95% at pH of 6～9 with molar ratio ofFe(III) and P being 1. The dynamic pseudo-first-order model could fit the biological phosphorus removal process well, and the pseudo-second-order model could well describe the iron enhanced biological phosphorus removal without phosphorus releasing for a long time. Except the uptake of part of the phosphorus by bacterial growth and bio-sorption by extracellular polymeric substance, the hydroxyl phosphate iron complex compound and iron phosphorus precipitation induced by bacterium also contributed to the phosphorus removal.

Key words: Fe(III), wastewater treatment, enhanced biological phosphorus removal, chemical phosphorus removal, high salinity wastewater containing phosphorus, kinetics

CLC Number: 

  • X52
[1] PARFITT R L, ATKINSON R J, SMART R S C. The mechanism of phosphate fixation by iron oxides[J]. Soil Science Society of America Journal, 1975, 39(5):837-841.
[2] De HAAS D, WENTZELM, EKAMA G. The use of simultaneous chemical precipitation in modified activated sludge systems exhibiting biological excess phosphate removal. Part 1:literature review[J]. Water S A, 2000, 26(4):439-452.
[3] CARAVELLI A H, CONTRERAS E M, ZARITZKY N E. Phosphorous removal in batch systems using ferric chloride in the presence of activated sludges[J]. Hazard Mater, 2010, 177(1-3):199-208.
[4] 田宝珍, 汤鸿霄. 含磷酸盐的三氯化铁水解溶液的化学特征[J]. 环境化学, 1995, 14(4):329-337. TIAN Baozhen, TANG Hongxiao. Ferric chloride containing phosphate chemical characteristics of hydrolysis solution[J]. Environmental Chemistry, 1995, 14(4):329-337.
[5] De GREGORIO C, CARAVELLI A H, ZARITZKY N E. Performance and biological indicators of a laboratory-scale activated sludge reactor with phosphate simultaneous precipitation as affected by ferric chloride addition[J]. Chemical Engineering Journal, 2010, 165(2):607-616.
[6] PARFITT R L, ATKINSON R J, SMART R S C. The mechanism of phosphate fixation by iron oxides[J]. Soil Science Society of America Journal, 1975, 39(5):837-841.
[7] 姜应和, 张发根. 混凝法在城市污水强化处理中的应用[J]. 中国给水排水, 2002, 18(3):30-32. JIANG Yinghe, ZHANG Fagen. The application of coagulation method in the sewage reinforcement treatment[J]. China Water & Wastewater, 2002, 18(3):30-32.
[8] 张萌, 邱琳, 于晓晴. 亚铁盐与高铁盐除磷工艺的对比研究[J]. 高校化学工程学报, 2013, 27(3):519-525. ZHANG Meng, QIU Lin, YU Xiaoqing. Comparison of phosphorus removal processes by ferrous salts and ferric salts[J]. Journal of Chemical Engineering of Chinese Universities, 2013, 27(3):519-525.
[9] LOTTER L H. Combined chemical and biological removal of phosphate in activated sludge plants[J]. Water Science & Technology, 1991, 23(4-6):611-621.
[10] SINGH M, SRIVASTAVA R K. Sequencing batch reactor technology for biological wastewater treatment: a review[J]. Asia-Pacific Journal of Chemical Engineering, 2011, 6(1):3-13.
[11] UYGUR A, KARGI F. Salt inhibition on biological nutrient removal from saline wastewater in a sequencing batch reactor[J]. Enzyme and Microbial Technology, 2004, 34(3):313-318.
[12] NIELSEN P H, SAUNDERS A M, HANSEN A A, et al. Microbial communities involved in enhanced biological phosphorus removal from wastewater-a model system in environmental biotechnology[J]. Current Opinion in Biotechnology, 2012, 23(3):452-459.
[13] 施汉昌, 柯细勇, 徐丽婕. 用化学法强化生物除磷的优化控制[J].中国给水排水, 2002, 18(7):35-38. SHI Hanchang, KE Xiyong, XU Lijie. Optimal control ofenhanced biological phosphorus removal by the chemical method[J]. China Water & Wastewater, 2002, 18(7):35-38.
[14] 郑兴灿, 李亚新. 污水除磷脱氮技术[M]. 北京:中国建筑工业出版社, 1998.
[15] De HAAS D W, WENTZEL M C, EKAMA G A. The use of simultaneous chemical precipitation in modified activated sludge systems exhibiting biological excess phosphate removal Part 6: modelling of simultaneous chemical-biological P removal-review of existing models[J]. Water S A, 2001, 27(2):135-150.
[16] WUHRMANN K. Objectives, technology, and results of nitrogen and phosphorus removal processes[M]. Texas, USA:University of Texas Press, 1968.
[17] 王洪洋, 侯红娟, 周琪. SBR中混凝剂与微生物的协同除污效能[J]. 中国给水排水, 2004, 20(4):38-40. WANG Hongyang, HOU Hongjuan, ZHOU Qi. Collaborative drainage efficiency of coagulant and microbiology in SBR[J]. China Water & Wastewater, 2004, 20(4):38-40.
[18] PLANAVSKY N J, ROUXEL O J. The evolution of the marine phosphate reservoir[J]. Nature, 2010, 467(7319):1088-1090.
[19] 李久义, 吴晓清, 陈福泰, 等. Fe(III)对活性污泥絮体结构和生物絮凝作用的影响[J]. 环境科学学报, 2003, 23(5):582-587. LI Jiuyi, WU Xiaoqing, CHEN Futai, et al. Effects of Fe on floc surface properties and bioflocculation of activated sludge[J]. Journal of Environmental Sciences, 2003, 23(5):582-587.
[20] 刘飞萍, 马鲁铭. 催化铁与生物法耦合除磷工艺特性[J]. 环境工程学报, 2014, 8(2):429-435. LIU Feiping, MA Luming. Characters of coupled phosphorus removal process of catalyzed iron method and biological treatment[J]. Chinese Journal Environmental Engineering, 2014, 8(2):429-435.
[21] 李子富, 云玉攀, 曾灏, 等. 城市污水处理厂化学强化生物除磷的试验研究[J]. 中国环境科学, 2014, 34(12):3070-3077. LI Zifu, YUN Yupan, ZENG Hao, et al. Experimental study on chemically enhanced biological phosphorus removal for municipal wastewater treatment[J]. China Environmental Science, 2014, 34(12):3070-3077.
[22] MURUGAVELH S, KAUSTUBHA MOHANTY. Bioreduction of hexavalent chromium by free cells and cell free extracts of Halomonas sp[J]. Chemical Engineering Journal, 2012, 203:415-422.
[23] SANCHEZ-ROMAN M, RIVADENEYRA M A, VASCONCELOS C. Biomineralization of carbonate and phosphate by moderately halophilic bacteria[J]. FEMS Microbiology Ecology, 2007, 61(2):273-284.
[24] HO Y S, MCKAY G. Pseudo-second order model for sorption processes[J]. Process Biochemistry, 1999, 34(5):451-465.
[25] 房平, 邵瑞华, 任娟. 活性炭对苯酚的吸附研究[J]. 炭素技术, 2011, 30(2): 12-16. FANG Ping, SHAO Ruihua, REN Juan. Adsorption of phenol from aqueous solution using activated carbon[J]. Carbon Techniques, 2011, 30(2):12-16.
[26] ERIKSSON L, ALM B. Study of flocculation mechanisms by observing effects of a complexing agent on activated sludge properties[J]. Water Science & Technology, 1991, 24(7):21-28.
[27] MANAS A, BISCANS B, SPERANDIO M. Biologically induced phosphorus precipitation in aerobic granular sludge process[J]. Water Research, 2011, 45(12): 3776-3786.
[1] XIAO Di, LIAN Jing, JI Shaobo, ZHAO Shengjin, XU Huaimin. Influence of ozone addition on laminar flame speed in methane-air lean mixtures [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2017, 47(4): 59-63.
[2] MO Zhengbo, HU Songtao, HU Dedong. Experimental research on the manufacture of chlorine dioxide by sodium chlorite and hydrochloric acid at low concentration [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2017, 47(2): 100-105.
[3] DONG Zhen, LAI Yanhua, LYU Mingxin, ZHENG Haoyu, PAN Jihong. Comprehensive performance test and analysis of adsorbent [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2016, 46(5): 120-125.
[4] YU Meiqiong, YANG Jinbei, CHEN Xiuyu, DENG Shu. Adsorption of Pb(II) and Ni(II) by pine sawdust [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2015, 45(2): 75-81.
[5] SUN Hongyu, ZHANG Zhaoling, DONG Yuping. Influence of pressure on active-air biomass gasification [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2014, 44(5): 78-82.
[6] QI Zhen, YU Shu-yan, LIU Lu, WANG Shu-guang*. Kinetic and thermodynamic studies on the adsorption of tetracycline onto graphene [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2013, 43(3): 63-69.
[7] RAO Min1, LI Yan-hong1, CHEN Wei-hua1, SONG Jian-bo2, CHEN Guang-da1, LIU Xiao-zuo1. Study on the treatment of diazodinitrophenol industrial wastewater [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2012, 42(6): 100-106.
[8] ZENG Xiang-dong, SHA Zuo-liang*, CHEN Qi-hua. Study on crystallization kinetics of glyphosate [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2011, 41(1): 105-109.
[9] ZHONG Qian-qian, YUE Qin-yan*, LI Qian, LI Ying, XU Xing, GAO Bao-yu. Kinetics of the adsorption of Reactive Brilliant Red K-2BP onto    modified wheat residue [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2011, 41(1): 133-139.
[10] XU Ming. Reaction kinetics of ［BPy］Br and ［BMIm］Br under microwave-assisted synthesis [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2010, 40(4): 113-116.
[11] YU Feng-jun, SHI Lai-shun*. Manganese  dioxide  catalytic  oxidation with  chlorine  dioxide  as  an  oxidant  of  simulated  wastewater  containing  acid chrome blue K [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2010, 40(2): 88-94.
[12] LI Shan-ping,ZHAO Yu-xiao,QIAO Peng,FENG Zheng-zhi . Cultivation of aerobic granular sludge and the kinetics of substrate degradation and biomass growth [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2008, 38(3): 95-98 .
[13] YUAN Qinghua,LIU Xiaojian,LI Lei,QIU Nanyuan . The reaction kinetics theory and the EF variation range of ntype metal oxide [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2006, 36(4): 114-116 .
[14] ZHANG Ying,LANG Yongmei,ZHAO Yuxiao,ZHANG Jianda,QIAO Peng,LI Shanping . Research on technique of aerobic granular sludge cultivationby seeding EGSB anaerobic granular sludge [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2006, 36(4): 56-59 .
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright 2018 © Editorial office of Journal of Shandong University (Engineering Science)
Supported by Beijing Magtech Co.Ltd