Pre-coagualtions for microfiltration of an upland surface water

被引:66
作者
Pikkarainen, AT
Judd, SJ [1 ]
Jokela, J
Gillberg, L
机构
[1] Cranfield Univ, Sch Water Sci, Cranfield MK43 0AL, Beds, England
[2] Kemira Chem Oy, Kemira OYJ, Oulu Res Ctr, FIN-90101 Oulu, Finland
[3] Kemira Kemi AB, Kemwater Headquarters, SE-25109 Helsingborg, Sweden
关键词
coagulation; clarification; fouling; membrane; filtration; resistance;
D O I
10.1016/j.watres.2003.09.030
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The effect of different coagulants on cake formation and hydraulic resistance in membrane filtration of strongly coloured (SUVAgreater than or equal to4.8) upland surface water has been studied at bench-scale under constant pressure conditions. Coagulants used were aluminium sulphate, polyaluminium chloride, ferric chloride and ferric sulphate. Optimisation of coagulation parameters was carried by conventional jar testing. The R-c' (specific cake resistance in m(-2)) values were determined for all coagulants over a range of coagulant doses and slow mixing flocculation periods. Experiments indicated slight differences in cake formation trends between ferric- and aluminium-based coagulants and chloride and sulphate counterions, but that the range of measured R-c' values was small (0.9 and 2.6 x 10(18) m(-2)) over the range of doses studied. Greater than 99% UV254 removal was achieved with every coagulant, whereas dissolved organic carbon (DOC) removal ranged from 78% to 88%. Optimisation of the pre-coagulation-membrane filtration process suggests ferric chloride to be slightly superior for the feedwater matrix studied on the basis of DOC removal, whereas ferric sulphate gave slightly lower filter cake specific resistance values. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码:455 / 465
页数:11
相关论文
共 29 条
[1]   The fouling of microfiltration membranes by NOM after coagulation treatment [J].
Carroll, T ;
King, S ;
Gray, SR ;
Bolto, BA ;
Booker, NA .
WATER RESEARCH, 2000, 34 (11) :2861-2868
[2]   Spectroscopic characterization of the structural and functional properties of natural organic matter fractions [J].
Chen, J ;
Gu, BH ;
LeBoeuf, EJ ;
Pan, HJ ;
Dai, S .
CHEMOSPHERE, 2002, 48 (01) :59-68
[3]  
Chow CWK, 1999, WATER SCI TECHNOL, V40, P97, DOI 10.1016/S0273-1223(99)00645-9
[4]   MOLECULAR-WEIGHT DISTRIBUTION, CARBOXYLIC ACIDITY, AND HUMIC SUBSTANCES CONTENT OF AQUATIC ORGANIC-MATTER - IMPLICATIONS FOR REMOVAL DURING WATER-TREATMENT [J].
COLLINS, MR ;
AMY, GL ;
STEELINK, C .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1986, 20 (10) :1028-1032
[5]  
CROUE JP, 1999, DBP FORMATION POTENT, V39, P218
[6]  
Davis R. H., 1992, MEMBRANE HDB
[7]   Formation of the haloacetic acids during ozonation and chlorination of water in Warsaw waterworks (Poland) [J].
Dojlido, J ;
Zbiec, E ;
Swietlik, R .
WATER RESEARCH, 1999, 33 (14) :3111-3118
[9]   The molecular size of natural organic matter (NOM) determined by diffusivimetry and seven other methods [J].
Egeberg, PK ;
Christy, AA ;
Eikenes, M .
WATER RESEARCH, 2002, 36 (04) :925-932
[10]   Determination of hydrophobicity of NOM by RP-HPLC, and the effect of pH and ionic strength [J].
Egeberg, PK ;
Alberts, JJ .
WATER RESEARCH, 2002, 36 (20) :4997-5004