Drinking water decontamination by biological denitrification using fresh bamboo as inoculum source

被引:12
作者
Bucco, Samuel [1 ]
Padoin, Natan [2 ]
Netto, Willibaldo Schmidell [1 ]
Soares, Hugo Moreira [1 ]
机构
[1] Univ Fed Santa Catarina, Dept Chem & Food Engn, Lab Biol Treatment Waste, BR-88040900 Florianopolis, SC, Brazil
[2] Univ Fed Santa Catarina, Dept Chem & Food Engn, Lab Energy & Environm, BR-88040900 Florianopolis, SC, Brazil
关键词
Biological denitrification; Fresh bamboo; Clean inoculum source; Pilot-scale fixed-bed bioreactor; Drinking water decontamination; GROUNDWATER NITRATE CONTAMINATION; CARBON SOURCE; PERFORMANCE; REMOVAL; SUPPORT;
D O I
10.1007/s00449-014-1176-7
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Groundwater contamination is becoming a serious problem in many Brazilian regions. European countries started to deal with this issue in the 1980s, mainly caused by the extensive usage of nitrogenous fertilizers and the absence of domestic wastewater treatment. Due to its high solubility, nitrate readily passes through the soil and reaches the aquifer. Thereafter, this ion moves, following groundwater flow, and can be found several kilometers from the area where the pollution occurred. Concern about nitrate contamination is due to the link found between this contaminant and various human health diseases, such as methemoglobin and cancer. Studies carried out in France enabled the design and implementation of several biological denitrification plants throughout the country, in order to remove nitrate from its contaminated groundwater. Heterotrophic denitrification facilities shown to be adequate to treat high water flows with satisfactory nitrate removal efficiency, especially when static media supports are employed. The objective of this research was to evaluate the existence of denitrifying microorganisms in bamboo (Bambusa tuldides) and verify the feasibility of their use to inoculate a pilot-scale fixed-bed bioreactor. The support material selected to fill the bioreactor bed was commercial polypropylene Pall rings, since such support has a high porosity associated with a wide superficial area. The bioreactor was able to produce and retain a large amount of cells. Using ethanol as carbon source, nitrate (N-NO3 (-)) removal efficiency of the bioreactor stood around 80 % for a maximum nitrogen loading rate of approximately 6.5 mg N-NO3 (-) L-1 h(-1).
引用
收藏
页码:2009 / 2017
页数:9
相关论文
共 20 条
[2]   Nitrate removal and hydraulic performance of organic carbon for use in denitrification beds [J].
Cameron, Stewart G. ;
Schipper, Louis A. .
ECOLOGICAL ENGINEERING, 2010, 36 (11) :1588-1595
[3]  
Canter L.W., 1997, Nitrates in Groundwater
[4]   Denitrification of water in packed beds using bacterial biomass immobilized on waste plastics as supports [J].
Cheikh, A. ;
Yala, A. ;
Drouiche, N. ;
Abdi, N. ;
Lounici, H. ;
Mameri, N. .
ECOLOGICAL ENGINEERING, 2013, 53 :329-334
[5]   Denitrification performance and biofilm characteristics using biodegradable polymers PCL as carriers and carbon source [J].
Chu, Libing ;
Wang, Jianlong .
CHEMOSPHERE, 2013, 91 (09) :1310-1316
[6]   Enhanced anaerobic biodegradation of benzene-toluene-ethylbenzene-xylene-ethanol mixtures in bioaugmented aquifer columns [J].
Da Silva, MLB ;
Alvarez, PJJ .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 2004, 70 (08) :4720-4726
[7]   NUMERICALLY DOMINANT DENITRIFYING BACTERIA FROM WORLD SOILS [J].
GAMBLE, TN ;
BETLACH, MR ;
TIEDJE, JM .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1977, 33 (04) :926-939
[8]   Nitrate removal from drinking water - Review [J].
Kapoor, A ;
Viraraghavan, T .
JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE, 1997, 123 (04) :371-380
[9]   European-scale modelling of groundwater denitrification and associated N2O production [J].
Keuskamp, J. A. ;
van Drecht, G. ;
Bouwman, A. F. .
ENVIRONMENTAL POLLUTION, 2012, 165 :67-76
[10]   Identifying sources of groundwater nitrate contamination in a large alluvial groundwater basin with highly diversified intensive agricultural production [J].
Lockhart, K. M. ;
King, A. M. ;
Harter, T. .
JOURNAL OF CONTAMINANT HYDROLOGY, 2013, 151 :140-154