A hindered settling velocity model related to the fractal dimension and activated sludge flocs characteristics: Application to a sludge with a previous fragmentation and flocculation process
[Display omitted] •A new hindered settling velocity model for activated sludge is proposed.•This model is related to fractal dimension and other flocs characteristics.•It describes the settling velocity after a fragmentation-flocculation process.•The model reproduces the abrupt decrease of final hin...
Saved in:
| Published in | Separation and purification technology Vol. 300; p. 121812 |
|---|---|
| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.11.2022
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 1383-5866 1873-3794 |
| DOI | 10.1016/j.seppur.2022.121812 |
Cover
| Abstract | [Display omitted]
•A new hindered settling velocity model for activated sludge is proposed.•This model is related to fractal dimension and other flocs characteristics.•It describes the settling velocity after a fragmentation-flocculation process.•The model reproduces the abrupt decrease of final hindered settling velocity.•The fractal dimension explains the structure of flocs formed from primary flocs.
The modelling of the activated sludge hindered settling velocity as a function of the flocs characteristics and the incorporation of these models to the secondary settling tanks simulation is a hardly studied subject. Commonly used empirical models cannot describe the changes in the settling velocity caused by changes in the flocs characteristics. In this paper, a model for the hindered settling velocity as a function of the fractal dimension and other flocs characteristics is proposed. The model was used to describe the settling velocity after a flocculation process originated by activated sludge fragmentation. The model reproduces the observed abrupt decrease of hindered settling velocity in a small range of suspended solids concentration. It also enables to relate the flocs characteristics and the settling velocity to the fragmentation and sludge aggregation mechanisms. |
|---|---|
| AbstractList | [Display omitted]
•A new hindered settling velocity model for activated sludge is proposed.•This model is related to fractal dimension and other flocs characteristics.•It describes the settling velocity after a fragmentation-flocculation process.•The model reproduces the abrupt decrease of final hindered settling velocity.•The fractal dimension explains the structure of flocs formed from primary flocs.
The modelling of the activated sludge hindered settling velocity as a function of the flocs characteristics and the incorporation of these models to the secondary settling tanks simulation is a hardly studied subject. Commonly used empirical models cannot describe the changes in the settling velocity caused by changes in the flocs characteristics. In this paper, a model for the hindered settling velocity as a function of the fractal dimension and other flocs characteristics is proposed. The model was used to describe the settling velocity after a flocculation process originated by activated sludge fragmentation. The model reproduces the observed abrupt decrease of hindered settling velocity in a small range of suspended solids concentration. It also enables to relate the flocs characteristics and the settling velocity to the fragmentation and sludge aggregation mechanisms. |
| ArticleNumber | 121812 |
| Author | Alemany, E. Asensi, E. |
| Author_xml | – sequence: 1 givenname: E. surname: Asensi fullname: Asensi, E. email: easensi@hma.upv.es organization: Institut Universitari d'Investigació d’Enginyeria de l’Aigua i Medi Ambient – IIAMA, Universitat Politècnica de València, Camí de Vera s/n, 46022 València, Spain – sequence: 2 givenname: E. surname: Alemany fullname: Alemany, E. email: ealemany@mat.upv.es organization: Departamento de Matemática Aplicada, Universitat Politècnica de València, Camí de Vera s/n, 46022 València, Spain |
| BookMark | eNqFkc9u3CAQxlGUSs2fvkEPvIC3Bmwvm0OkVdQ2kSLlkjvCw3h3VqyxgN0qL9dnK47bSw_tCRi-7zcD3zW7HMOIjH0W9UrUovtyWCWcplNcyVrKlZBCC3nBroReq0qtN81l2SutqlZ33Ud2ndKhrsVaaHnFfm75nkaHER1PmLOnccfP6ANQfuPH4NDziN7mcp8Dz3vkQ7SQreeOjjgmCiO3o-OlRud3WfIntyuywkgc9naWY6SUCdId306TJ7B59hWg_SP_QXlfTlPEM4VTmrvsCj8vyrnDDISTXwpTDIAp3bIPg_UJP_1eb9jrt6-vD4_V88v3p4ftcwWqlbkSChvsagHdBkDZXkLfyMGB1F3fN81mGFA717VWa6nWFhq7afpWDaLthxa1umHNgoUYUoo4mCnS0cY3I2ozR2AOZonAzBGYJYJiu_vLVn71ff4cLfn_me8XM5Z3nQmjSUA4AjqKCNm4QP8G_ALT5q4i |
| CitedBy_id | crossref_primary_10_1016_j_jenvman_2024_121207 crossref_primary_10_1016_j_jwpe_2024_106138 crossref_primary_10_3390_min13091137 crossref_primary_10_1016_j_watres_2023_120664 crossref_primary_10_3390_app15073557 crossref_primary_10_1029_2023JC020043 crossref_primary_10_1016_j_jece_2024_114727 crossref_primary_10_1007_s11270_024_07110_8 crossref_primary_10_1016_j_jwpe_2022_103459 crossref_primary_10_1080_01932691_2023_2247062 crossref_primary_10_1016_j_jclepro_2023_137649 crossref_primary_10_1016_j_seppur_2023_125488 crossref_primary_10_1016_j_clay_2024_107351 crossref_primary_10_1016_j_seppur_2023_124852 |
| Cites_doi | 10.1016/0043-1354(91)90066-Y 10.1080/00221686.2006.9521690 10.1016/j.jcis.2013.01.053 10.1016/S0043-1354(01)00061-6 10.1016/j.watres.2014.08.034 10.1016/j.watres.2014.07.007 10.1002/aic.10789 10.1016/j.seppur.2019.115711 10.1016/j.cherd.2019.07.018 10.1016/j.colsurfa.2014.03.018 10.1016/j.watres.2010.11.019 10.1016/j.watres.2016.11.067 10.1016/j.watres.2007.01.011 10.1089/ees.2013.0509 10.1016/S1383-5866(03)00132-1 10.1016/S1385-8947(03)00108-6 10.1016/j.ces.2007.05.025 10.1016/S0043-1354(01)00541-3 10.1016/j.watres.2020.116129 10.1080/01496395.2014.980002 10.1016/j.minpro.2013.04.011 10.1016/j.powtec.2017.12.033 10.1016/0043-1354(93)90016-B 10.1016/j.ces.2020.116274 10.1080/09593330.2017.1291760 10.1016/j.powtec.2014.10.002 10.1023/A:1008731904082 10.1016/S0927-7757(99)00091-6 10.1016/j.cej.2010.07.061 10.1016/j.watres.2012.04.031 10.2166/wst.2020.113 10.1007/s11270-018-3979-7 10.1016/0043-1354(95)00322-3 10.1016/j.mineng.2013.09.012 10.1016/j.seppur.2018.07.006 10.1002/aic.10333 10.2175/106143007X194347 |
| ContentType | Journal Article |
| Copyright | 2022 The Authors |
| Copyright_xml | – notice: 2022 The Authors |
| DBID | 6I. AAFTH AAYXX CITATION |
| DOI | 10.1016/j.seppur.2022.121812 |
| DatabaseName | ScienceDirect Open Access Titles Elsevier:ScienceDirect:Open Access CrossRef |
| DatabaseTitle | CrossRef |
| DatabaseTitleList | |
| DeliveryMethod | fulltext_linktorsrc |
| Discipline | Engineering |
| EISSN | 1873-3794 |
| ExternalDocumentID | 10_1016_j_seppur_2022_121812 S1383586622013673 |
| GroupedDBID | --K --M .~1 0R~ 123 1B1 1~. 1~5 4.4 457 4G. 53G 5VS 6I. 7-5 71M 8P~ AABNK AABXZ AACTN AAEDT AAEDW AAEPC AAFTH AAIAV AAIKJ AAKOC AALRI AAOAW AAQFI AAXUO ABJNI ABMAC ABNUV ABXRA ABYKQ ACDAQ ACGFS ACRLP ADBBV ADEWK ADEZE AEBSH AEKER AENEX AEZYN AFKWA AFRZQ AFTJW AGHFR AGUBO AGYEJ AHPOS AIEXJ AIKHN AITUG AJOXV AKURH ALMA_UNASSIGNED_HOLDINGS AMFUW AMRAJ AXJTR BKOJK BLXMC CS3 DU5 EBS EFJIC EFLBG ENUVR EO8 EO9 EP2 EP3 FDB FEDTE FIRID FNPLU FYGXN G-Q GBLVA HVGLF IHE J1W KOM M41 MAGPM MO0 N9A O-L O9- OAUVE OZT P-8 P-9 PC. Q38 ROL RPZ SDF SDG SES SPC SPCBC SSG SSM SSZ T5K ~G- AAQXK AATTM AAXKI AAYWO AAYXX ABFNM ABWVN ABXDB ACNNM ACRPL ACVFH ADCNI ADMUD ADNMO AEIPS AEUPX AFJKZ AFPUW AFXIZ AGCQF AGQPQ AGRNS AIGII AIIUN AKBMS AKRWK AKYEP ANKPU APXCP ASPBG AVWKF AZFZN BNPGV CITATION EJD FGOYB HZ~ R2- RIG SEW SSH |
| ID | FETCH-LOGICAL-c352t-13e4e601c69cc3ab2cb42fdc286bb449ffe8dd65a88237ac4a94b53f15bf5e83 |
| IEDL.DBID | AIKHN |
| ISSN | 1383-5866 |
| IngestDate | Thu Apr 24 23:05:07 EDT 2025 Tue Jul 01 00:33:04 EDT 2025 Fri Feb 23 02:36:44 EST 2024 |
| IsDoiOpenAccess | true |
| IsOpenAccess | true |
| IsPeerReviewed | true |
| IsScholarly | true |
| Keywords | Activated sludge Settling velocity model Hindered settling Fractal dimension Secondary settling tank |
| Language | English |
| License | This is an open access article under the CC BY license. |
| LinkModel | DirectLink |
| MergedId | FETCHMERGED-LOGICAL-c352t-13e4e601c69cc3ab2cb42fdc286bb449ffe8dd65a88237ac4a94b53f15bf5e83 |
| OpenAccessLink | https://www.sciencedirect.com/science/article/pii/S1383586622013673 |
| ParticipantIDs | crossref_primary_10_1016_j_seppur_2022_121812 crossref_citationtrail_10_1016_j_seppur_2022_121812 elsevier_sciencedirect_doi_10_1016_j_seppur_2022_121812 |
| ProviderPackageCode | CITATION AAYXX |
| PublicationCentury | 2000 |
| PublicationDate | 2022-11-01 2022-11-00 |
| PublicationDateYYYYMMDD | 2022-11-01 |
| PublicationDate_xml | – month: 11 year: 2022 text: 2022-11-01 day: 01 |
| PublicationDecade | 2020 |
| PublicationTitle | Separation and purification technology |
| PublicationYear | 2022 |
| Publisher | Elsevier B.V |
| Publisher_xml | – name: Elsevier B.V |
| References | Meakin (b0210) 1999; 15 Jang, Schuler (b0165) 2007; 79 Lester, Usher, Scales (b0140) 2005; 51 Li, Stenstrom (b0005) 2014; 65 Torfs, Balemans, Locatelli, Diehl, Bürger, Laurent, François, Nopens (b0010) 2017; 110 Richardson, Zaki (b0040) 1954; 32 Asensi, Alemany, Duque-Sarango, Aguado (b0070) 2019; 150 Khelifa, Hill (b0190) 2006; 44 Jeldres, Fawell, Florio (b0185) 2018; 326 Jones, Schuler (b0100) 2010; 164 van Loosdrecht, Nielsen, Lopez-Vazquez, Brdjanovic (b0130) 2016 Heath, Bahri, Fawell, Farrow (b0055) 2006; 52 Bürger, Careaga, Diehl (b0135) 2020; 81 Asensi, Alemany, Seco, Ferrer (b0075) 2019; 209 Vahedi, Gorczyca (b0205) 2012; 46 Chen, Chang, Hung, Lee (b0065) 1996; 30 Xiao, Lam, Li (b0195) 2013; 397 Betancourt, Bürger, Diehl, Mejías (b0155) 2014; 63 Font, García, Rodriguez (b0045) 1999; 157 Cho, Colin, Sardin, Prost (b0020) 1993; 27 Plósz, Climent, Griffin, Chiva, Mukherjee, Penkarski-Rodon, Clarke, Valverde-Pérez (b0030) 2020; 184 Asensi, Zambrano, Alemany, Aguado (b0095) 2019; 227 I. Nopens, Modelling the activated sludge flocculation process: A population balance approach, 2005. Lockwood, Peakall, Warren, Randall, Barnes, Harbottle, Hunter (b0060) 2021; 231 Takács, Patry, Nolasco (b0015) 1991; 25 Kuśnierz (b0170) 2018; 229 Baird, Eaton, Rice, Bridgewater (b0125) 2017 Hriberšek, Žajdela, Hribernik, Zadravec (b0200) 2011; 45 Diehl (b0145) 2007; 62 Schuler, Jang (b0085) 2007; 41 Teece, Hart, Ni Hsu, Gilligan, Faers, Bartlett (b0120) 2014; 458 Jin, Wilén, Lant (b0080) 2003; 95 Koivuranta, Suopajärvi, Hattuniemi, Stoor, Illikainen (b0105) 2017; 38 Ramin, Wágner, Yde, Binning, Rasmussen, Mikkelsen, Plósz (b0025) 2014; 66 Locatelli, François, Laurent, Lawniczak, Dufresne, Vazquez, Bekkour (b0150) 2015; 50 Yu, Zhao, Gao, Kim (b0090) 2016; 33 Zhao (b0115) 2004; 35 Li, Yuan (b0175) 2002; 36 Kinnear (b0035) 2002 Li, Logan (b0180) 2001; 35 Grabsch, Fawell, Adkins, Beveridge (b0050) 2013; 124 Chen, Wang (b0110) 2015; 270 Li (10.1016/j.seppur.2022.121812_b0005) 2014; 65 Lester (10.1016/j.seppur.2022.121812_b0140) 2005; 51 Diehl (10.1016/j.seppur.2022.121812_b0145) 2007; 62 Li (10.1016/j.seppur.2022.121812_b0180) 2001; 35 Meakin (10.1016/j.seppur.2022.121812_b0210) 1999; 15 Koivuranta (10.1016/j.seppur.2022.121812_b0105) 2017; 38 Zhao (10.1016/j.seppur.2022.121812_b0115) 2004; 35 Xiao (10.1016/j.seppur.2022.121812_b0195) 2013; 397 Khelifa (10.1016/j.seppur.2022.121812_b0190) 2006; 44 Kinnear (10.1016/j.seppur.2022.121812_b0035) 2002 Font (10.1016/j.seppur.2022.121812_b0045) 1999; 157 Jones (10.1016/j.seppur.2022.121812_b0100) 2010; 164 Cho (10.1016/j.seppur.2022.121812_b0020) 1993; 27 Asensi (10.1016/j.seppur.2022.121812_b0075) 2019; 209 Asensi (10.1016/j.seppur.2022.121812_b0070) 2019; 150 Heath (10.1016/j.seppur.2022.121812_b0055) 2006; 52 Torfs (10.1016/j.seppur.2022.121812_b0010) 2017; 110 Ramin (10.1016/j.seppur.2022.121812_b0025) 2014; 66 Grabsch (10.1016/j.seppur.2022.121812_b0050) 2013; 124 Asensi (10.1016/j.seppur.2022.121812_b0095) 2019; 227 Baird (10.1016/j.seppur.2022.121812_b0125) 2017 van Loosdrecht (10.1016/j.seppur.2022.121812_b0130) 2016 Bürger (10.1016/j.seppur.2022.121812_b0135) 2020; 81 Vahedi (10.1016/j.seppur.2022.121812_b0205) 2012; 46 Chen (10.1016/j.seppur.2022.121812_b0065) 1996; 30 Teece (10.1016/j.seppur.2022.121812_b0120) 2014; 458 Betancourt (10.1016/j.seppur.2022.121812_b0155) 2014; 63 Jang (10.1016/j.seppur.2022.121812_b0165) 2007; 79 10.1016/j.seppur.2022.121812_b0160 Li (10.1016/j.seppur.2022.121812_b0175) 2002; 36 Plósz (10.1016/j.seppur.2022.121812_b0030) 2020; 184 Jeldres (10.1016/j.seppur.2022.121812_b0185) 2018; 326 Lockwood (10.1016/j.seppur.2022.121812_b0060) 2021; 231 Jin (10.1016/j.seppur.2022.121812_b0080) 2003; 95 Richardson (10.1016/j.seppur.2022.121812_b0040) 1954; 32 Locatelli (10.1016/j.seppur.2022.121812_b0150) 2015; 50 Kuśnierz (10.1016/j.seppur.2022.121812_b0170) 2018; 229 Schuler (10.1016/j.seppur.2022.121812_b0085) 2007; 41 Yu (10.1016/j.seppur.2022.121812_b0090) 2016; 33 Takács (10.1016/j.seppur.2022.121812_b0015) 1991; 25 Chen (10.1016/j.seppur.2022.121812_b0110) 2015; 270 Hriberšek (10.1016/j.seppur.2022.121812_b0200) 2011; 45 |
| References_xml | – volume: 35 start-page: 71 year: 2004 end-page: 80 ident: b0115 article-title: Settling behaviour of polymer flocculated water-treatment sludge. I: Analyses of settling curves publication-title: Sep. Purif. Technol. – volume: 65 start-page: 40 year: 2014 end-page: 63 ident: b0005 article-title: Research advances and challenges in one-dimensional modeling of secondary settling tanks – a critical review publication-title: Water Res. – volume: 95 start-page: 221 year: 2003 end-page: 234 ident: b0080 article-title: A comprehensive insight into floc characteristics and their impact on compressibility and settleability of activated sludge publication-title: Chem. Eng. J. – volume: 51 start-page: 1158 year: 2005 end-page: 1168 ident: b0140 article-title: Estimation of the hindered settling function R(φ) from batch-settling tests publication-title: AIChE J. – volume: 36 start-page: 3110 year: 2002 end-page: 3120 ident: b0175 article-title: Settling velocities and permeabilities of microbial aggregates publication-title: Water Res. – volume: 326 start-page: 190 year: 2018 end-page: 207 ident: b0185 article-title: Population balance modelling to describe the particle aggregation process: a review publication-title: Powder Technol. – volume: 164 start-page: 16 year: 2010 end-page: 22 ident: b0100 article-title: Seasonal variability of biomass density and activated sludge settleability in full-scale wastewater treatment systems publication-title: Chem. Eng. J. – year: 2017 ident: b0125 article-title: American Public Health Association, A.W.W. Association, W.E. Federation, Standard Methods for the Examination of Water and Wastewater – volume: 25 start-page: 1263 year: 1991 end-page: 1271 ident: b0015 article-title: A dynamic model of the clarification-thickening process publication-title: Water Res. – volume: 150 start-page: 14 year: 2019 end-page: 25 ident: b0070 article-title: Assessment and modelling of the effect of precipitated ferric chloride addition on the activated sludge settling properties publication-title: Chem. Eng. Res. Des. – volume: 231 start-page: 116274 year: 2021 ident: b0060 article-title: Structure and sedimentation characterisation of sheared Mg(OH)2 suspensions flocculated with anionic polymers publication-title: Chem. Eng. Sci. – volume: 32 start-page: 35 year: 1954 end-page: 53 ident: b0040 article-title: Sedimentation and fluidisation: Part I publication-title: Trans. Inst. Chem. Eng. – volume: 50 start-page: 1059 year: 2015 end-page: 1065 ident: b0150 article-title: Detailed velocity and concentration profiles measurement during activated sludge batch settling using an ultrasonic transducer publication-title: Separ. Sci. Technol. – volume: 227 start-page: 115711 year: 2019 ident: b0095 article-title: Effect of the addition of precipitated ferric chloride on the morphology and settling characteristics of activated sludge flocs publication-title: Sep. Purif. Technol. – volume: 229 start-page: 327 year: 2018 ident: b0170 article-title: Scale of small particle population in activated sludge flocs publication-title: Water Air Soil Pollut. – volume: 62 start-page: 4589 year: 2007 end-page: 4601 ident: b0145 article-title: Estimation of the batch-settling flux function for an ideal suspension from only two experiments publication-title: Chem. Eng. Sci. – volume: 79 start-page: 2298 year: 2007 end-page: 2303 ident: b0165 article-title: The case for variable density: a new perspective on activated sludge settling publication-title: Water Environ. Res. – year: 2002 ident: b0035 article-title: Biological Solids Sedimentation: A Model Incorporating Fundamental Settling Parameters – volume: 46 start-page: 4188 year: 2012 end-page: 4194 ident: b0205 article-title: Predicting the settling velocity of flocs formed in water treatment using multiple fractal dimensions publication-title: Water Res. – volume: 397 start-page: 163 year: 2013 end-page: 168 ident: b0195 article-title: Investigation and visualization of internal flow through particle aggregates and microbial flocs using particle image velocimetry publication-title: J. Colloid Interface Sci. – volume: 110 start-page: 38 year: 2017 end-page: 47 ident: b0010 article-title: On constitutive functions for hindered settling velocity in 1-D settler models: Selection of appropriate model structure publication-title: Water Res. – volume: 66 start-page: 447 year: 2014 end-page: 458 ident: b0025 article-title: A new settling velocity model to describe secondary sedimentation publication-title: Water Res. – volume: 157 start-page: 73 year: 1999 end-page: 84 ident: b0045 article-title: Sedimentation test of metal hydroxides: hydrodynamics and influence of pH publication-title: Colloids Surf., A – volume: 33 start-page: 423 year: 2016 end-page: 429 ident: b0090 article-title: Effects of particle size on the zone settling velocity of activated sludge publication-title: Environ. Eng. Sci. – volume: 35 start-page: 3373 year: 2001 end-page: 3380 ident: b0180 article-title: Permeability of fractal aggregates publication-title: Water Res. – volume: 52 start-page: 1987 year: 2006 end-page: 1994 ident: b0055 article-title: Polymer flocculation of calcite: relating the aggregate size to the settling rate publication-title: AIChE J. – year: 2016 ident: b0130 article-title: Experimental Methods in Wastewater Treatment – volume: 209 start-page: 32 year: 2019 end-page: 41 ident: b0075 article-title: Characterization of activated sludge settling properties with a sludge collapse-acceleration stage publication-title: Sep. Purif. Technol. – volume: 184 start-page: 116129 year: 2020 ident: b0030 article-title: Hindered and compression solid settling functions – sensor data collection, practical model identification and validation publication-title: Water Res. – volume: 81 start-page: 1715 year: 2020 end-page: 1722 ident: b0135 article-title: A review of flux identification methods for models of sedimentation publication-title: Water Sci. Technol. – reference: I. Nopens, Modelling the activated sludge flocculation process: A population balance approach, 2005. – volume: 63 start-page: 2 year: 2014 end-page: 15 ident: b0155 article-title: Advanced methods of flux identification for clarifier-thickener simulation models publication-title: Miner. Eng. – volume: 15 start-page: 97 year: 1999 end-page: 117 ident: b0210 article-title: Historical introduction to computer models for fractal aggregates publication-title: J. Sol-Gel Sci. Technol. – volume: 41 start-page: 1814 year: 2007 end-page: 1822 ident: b0085 article-title: Density effects on activated sludge zone settling velocities publication-title: Water Res. – volume: 45 start-page: 1729 year: 2011 end-page: 1735 ident: b0200 article-title: Experimental and numerical investigations of sedimentation of porous wastewater sludge flocs publication-title: Water Res. – volume: 124 start-page: 83 year: 2013 end-page: 94 ident: b0050 article-title: The impact of achieving a higher aggregate density on polymer-bridging flocculation publication-title: Int. J. Miner. Process. – volume: 27 start-page: 1237 year: 1993 end-page: 1242 ident: b0020 article-title: Settling velocity model of activated sludge publication-title: Water Res. – volume: 458 start-page: 126 year: 2014 end-page: 133 ident: b0120 article-title: Gels under stress: the origins of delayed collapse publication-title: Colloids Surf., A – volume: 44 start-page: 390 year: 2006 end-page: 401 ident: b0190 article-title: Models for effective density and settling velocity of flocs publication-title: J. Hydraul. Res. – volume: 270 start-page: 1 year: 2015 end-page: 9 ident: b0110 article-title: Influence of single- and dual-flocculant conditioning on the geometric morphology and internal structure of activated sludge publication-title: Powder Technol. – volume: 38 start-page: 3209 year: 2017 end-page: 3215 ident: b0105 article-title: The effect of seasonal variations on floc morphology in the activated sludge process publication-title: Environ. Technol. (U.K.) – volume: 30 start-page: 1844 year: 1996 end-page: 1850 ident: b0065 article-title: Regimes for zone settling of waste activated sludges publication-title: Water Res. – volume: 25 start-page: 1263 year: 1991 ident: 10.1016/j.seppur.2022.121812_b0015 article-title: A dynamic model of the clarification-thickening process publication-title: Water Res. doi: 10.1016/0043-1354(91)90066-Y – volume: 44 start-page: 390 year: 2006 ident: 10.1016/j.seppur.2022.121812_b0190 article-title: Models for effective density and settling velocity of flocs publication-title: J. Hydraul. Res. doi: 10.1080/00221686.2006.9521690 – volume: 397 start-page: 163 year: 2013 ident: 10.1016/j.seppur.2022.121812_b0195 article-title: Investigation and visualization of internal flow through particle aggregates and microbial flocs using particle image velocimetry publication-title: J. Colloid Interface Sci. doi: 10.1016/j.jcis.2013.01.053 – volume: 35 start-page: 3373 year: 2001 ident: 10.1016/j.seppur.2022.121812_b0180 article-title: Permeability of fractal aggregates publication-title: Water Res. doi: 10.1016/S0043-1354(01)00061-6 – year: 2016 ident: 10.1016/j.seppur.2022.121812_b0130 – volume: 32 start-page: 35 year: 1954 ident: 10.1016/j.seppur.2022.121812_b0040 article-title: Sedimentation and fluidisation: Part I publication-title: Trans. Inst. Chem. Eng. – volume: 66 start-page: 447 year: 2014 ident: 10.1016/j.seppur.2022.121812_b0025 article-title: A new settling velocity model to describe secondary sedimentation publication-title: Water Res. doi: 10.1016/j.watres.2014.08.034 – volume: 65 start-page: 40 year: 2014 ident: 10.1016/j.seppur.2022.121812_b0005 article-title: Research advances and challenges in one-dimensional modeling of secondary settling tanks – a critical review publication-title: Water Res. doi: 10.1016/j.watres.2014.07.007 – volume: 52 start-page: 1987 year: 2006 ident: 10.1016/j.seppur.2022.121812_b0055 article-title: Polymer flocculation of calcite: relating the aggregate size to the settling rate publication-title: AIChE J. doi: 10.1002/aic.10789 – volume: 227 start-page: 115711 year: 2019 ident: 10.1016/j.seppur.2022.121812_b0095 article-title: Effect of the addition of precipitated ferric chloride on the morphology and settling characteristics of activated sludge flocs publication-title: Sep. Purif. Technol. doi: 10.1016/j.seppur.2019.115711 – ident: 10.1016/j.seppur.2022.121812_b0160 – volume: 150 start-page: 14 year: 2019 ident: 10.1016/j.seppur.2022.121812_b0070 article-title: Assessment and modelling of the effect of precipitated ferric chloride addition on the activated sludge settling properties publication-title: Chem. Eng. Res. Des. doi: 10.1016/j.cherd.2019.07.018 – volume: 458 start-page: 126 year: 2014 ident: 10.1016/j.seppur.2022.121812_b0120 article-title: Gels under stress: the origins of delayed collapse publication-title: Colloids Surf., A doi: 10.1016/j.colsurfa.2014.03.018 – volume: 45 start-page: 1729 year: 2011 ident: 10.1016/j.seppur.2022.121812_b0200 article-title: Experimental and numerical investigations of sedimentation of porous wastewater sludge flocs publication-title: Water Res. doi: 10.1016/j.watres.2010.11.019 – volume: 110 start-page: 38 year: 2017 ident: 10.1016/j.seppur.2022.121812_b0010 article-title: On constitutive functions for hindered settling velocity in 1-D settler models: Selection of appropriate model structure publication-title: Water Res. doi: 10.1016/j.watres.2016.11.067 – year: 2002 ident: 10.1016/j.seppur.2022.121812_b0035 – volume: 41 start-page: 1814 year: 2007 ident: 10.1016/j.seppur.2022.121812_b0085 article-title: Density effects on activated sludge zone settling velocities publication-title: Water Res. doi: 10.1016/j.watres.2007.01.011 – volume: 33 start-page: 423 year: 2016 ident: 10.1016/j.seppur.2022.121812_b0090 article-title: Effects of particle size on the zone settling velocity of activated sludge publication-title: Environ. Eng. Sci. doi: 10.1089/ees.2013.0509 – volume: 35 start-page: 71 year: 2004 ident: 10.1016/j.seppur.2022.121812_b0115 article-title: Settling behaviour of polymer flocculated water-treatment sludge. I: Analyses of settling curves publication-title: Sep. Purif. Technol. doi: 10.1016/S1383-5866(03)00132-1 – volume: 95 start-page: 221 year: 2003 ident: 10.1016/j.seppur.2022.121812_b0080 article-title: A comprehensive insight into floc characteristics and their impact on compressibility and settleability of activated sludge publication-title: Chem. Eng. J. doi: 10.1016/S1385-8947(03)00108-6 – volume: 62 start-page: 4589 year: 2007 ident: 10.1016/j.seppur.2022.121812_b0145 article-title: Estimation of the batch-settling flux function for an ideal suspension from only two experiments publication-title: Chem. Eng. Sci. doi: 10.1016/j.ces.2007.05.025 – year: 2017 ident: 10.1016/j.seppur.2022.121812_b0125 – volume: 36 start-page: 3110 year: 2002 ident: 10.1016/j.seppur.2022.121812_b0175 article-title: Settling velocities and permeabilities of microbial aggregates publication-title: Water Res. doi: 10.1016/S0043-1354(01)00541-3 – volume: 184 start-page: 116129 year: 2020 ident: 10.1016/j.seppur.2022.121812_b0030 article-title: Hindered and compression solid settling functions – sensor data collection, practical model identification and validation publication-title: Water Res. doi: 10.1016/j.watres.2020.116129 – volume: 50 start-page: 1059 year: 2015 ident: 10.1016/j.seppur.2022.121812_b0150 article-title: Detailed velocity and concentration profiles measurement during activated sludge batch settling using an ultrasonic transducer publication-title: Separ. Sci. Technol. doi: 10.1080/01496395.2014.980002 – volume: 124 start-page: 83 year: 2013 ident: 10.1016/j.seppur.2022.121812_b0050 article-title: The impact of achieving a higher aggregate density on polymer-bridging flocculation publication-title: Int. J. Miner. Process. doi: 10.1016/j.minpro.2013.04.011 – volume: 326 start-page: 190 year: 2018 ident: 10.1016/j.seppur.2022.121812_b0185 article-title: Population balance modelling to describe the particle aggregation process: a review publication-title: Powder Technol. doi: 10.1016/j.powtec.2017.12.033 – volume: 27 start-page: 1237 year: 1993 ident: 10.1016/j.seppur.2022.121812_b0020 article-title: Settling velocity model of activated sludge publication-title: Water Res. doi: 10.1016/0043-1354(93)90016-B – volume: 231 start-page: 116274 year: 2021 ident: 10.1016/j.seppur.2022.121812_b0060 article-title: Structure and sedimentation characterisation of sheared Mg(OH)2 suspensions flocculated with anionic polymers publication-title: Chem. Eng. Sci. doi: 10.1016/j.ces.2020.116274 – volume: 38 start-page: 3209 year: 2017 ident: 10.1016/j.seppur.2022.121812_b0105 article-title: The effect of seasonal variations on floc morphology in the activated sludge process publication-title: Environ. Technol. (U.K.) doi: 10.1080/09593330.2017.1291760 – volume: 270 start-page: 1 year: 2015 ident: 10.1016/j.seppur.2022.121812_b0110 article-title: Influence of single- and dual-flocculant conditioning on the geometric morphology and internal structure of activated sludge publication-title: Powder Technol. doi: 10.1016/j.powtec.2014.10.002 – volume: 15 start-page: 97 year: 1999 ident: 10.1016/j.seppur.2022.121812_b0210 article-title: Historical introduction to computer models for fractal aggregates publication-title: J. Sol-Gel Sci. Technol. doi: 10.1023/A:1008731904082 – volume: 157 start-page: 73 year: 1999 ident: 10.1016/j.seppur.2022.121812_b0045 article-title: Sedimentation test of metal hydroxides: hydrodynamics and influence of pH publication-title: Colloids Surf., A doi: 10.1016/S0927-7757(99)00091-6 – volume: 164 start-page: 16 year: 2010 ident: 10.1016/j.seppur.2022.121812_b0100 article-title: Seasonal variability of biomass density and activated sludge settleability in full-scale wastewater treatment systems publication-title: Chem. Eng. J. doi: 10.1016/j.cej.2010.07.061 – volume: 46 start-page: 4188 year: 2012 ident: 10.1016/j.seppur.2022.121812_b0205 article-title: Predicting the settling velocity of flocs formed in water treatment using multiple fractal dimensions publication-title: Water Res. doi: 10.1016/j.watres.2012.04.031 – volume: 81 start-page: 1715 year: 2020 ident: 10.1016/j.seppur.2022.121812_b0135 article-title: A review of flux identification methods for models of sedimentation publication-title: Water Sci. Technol. doi: 10.2166/wst.2020.113 – volume: 229 start-page: 327 year: 2018 ident: 10.1016/j.seppur.2022.121812_b0170 article-title: Scale of small particle population in activated sludge flocs publication-title: Water Air Soil Pollut. doi: 10.1007/s11270-018-3979-7 – volume: 30 start-page: 1844 year: 1996 ident: 10.1016/j.seppur.2022.121812_b0065 article-title: Regimes for zone settling of waste activated sludges publication-title: Water Res. doi: 10.1016/0043-1354(95)00322-3 – volume: 63 start-page: 2 year: 2014 ident: 10.1016/j.seppur.2022.121812_b0155 article-title: Advanced methods of flux identification for clarifier-thickener simulation models publication-title: Miner. Eng. doi: 10.1016/j.mineng.2013.09.012 – volume: 209 start-page: 32 year: 2019 ident: 10.1016/j.seppur.2022.121812_b0075 article-title: Characterization of activated sludge settling properties with a sludge collapse-acceleration stage publication-title: Sep. Purif. Technol. doi: 10.1016/j.seppur.2018.07.006 – volume: 51 start-page: 1158 year: 2005 ident: 10.1016/j.seppur.2022.121812_b0140 article-title: Estimation of the hindered settling function R(φ) from batch-settling tests publication-title: AIChE J. doi: 10.1002/aic.10333 – volume: 79 start-page: 2298 year: 2007 ident: 10.1016/j.seppur.2022.121812_b0165 article-title: The case for variable density: a new perspective on activated sludge settling publication-title: Water Environ. Res. doi: 10.2175/106143007X194347 |
| SSID | ssj0017182 |
| Score | 2.4683704 |
| Snippet | [Display omitted]
•A new hindered settling velocity model for activated sludge is proposed.•This model is related to fractal dimension and other flocs... |
| SourceID | crossref elsevier |
| SourceType | Enrichment Source Index Database Publisher |
| StartPage | 121812 |
| SubjectTerms | Activated sludge Fractal dimension Hindered settling Secondary settling tank Settling velocity model |
| Title | A hindered settling velocity model related to the fractal dimension and activated sludge flocs characteristics: Application to a sludge with a previous fragmentation and flocculation process |
| URI | https://dx.doi.org/10.1016/j.seppur.2022.121812 |
| Volume | 300 |
| hasFullText | 1 |
| inHoldings | 1 |
| isFullTextHit | |
| isPrint | |
| link | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnV1LT9tAEB6FcGkPqPSh0ke0h17dxPtizS1CjVIQXJpK3Czvi1LRxMIOx_60_jZm7DUFqWqlHm3PjC3PanZ2d75vAD7gmNHcm1lmVIULlCBcZqLPM29ktFwoHS2d6J6d6-VXeXKhLkZwPGBhqKwyxf4-pnfROt2Zpr85ra-upl9yXFwpozXnHe-Y2IFdLgqtxrA7_3y6PL8_TMDw2x16onxGCgOCrivzakJdb4kYlHNiWjA5__MM9WDWWTyDvZQusnn_RfswCuvn8PQBieAL-DVn34jz8CZ41oS2JXw5o0oghwk26zrdsA6xgs_bDcOEj0WCRqFZT9T-tF3GqrVnBHG47cSa662_RDG00TD3mNL5iM1_n3mTwWoQpy1dvKqpcHizbegtlz8StKl_Axl0qV8Yq3uIwktYLT6tjpdZ6sqQOUzWqHd9kAGXcU4XzonKcmclj95xo62VsogxGO-1qgzx4FROVoW0SsRc2aiCEa9gvN6sw2tgqDsrrBbSc4sih8ZWMzSjcpxAMeqqAxCDI0qXGMupccZ1OZSmfS9795XkvrJ33wFk91p1z9jxD_nDwcflo5FX4qTyV803_635Fp7QVY9pfAfj9mYb3mNy09oJ7Hz8mU_SEL4DdML_pQ |
| linkProvider | Elsevier |
| linkToHtml | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnV3JTsMwELVYDsABsYodH7iGNt7qcqsQqKwXisQtijcWQRuRlCOfxrcxk4VFQiBxTDweRxlrPLbnvSFkD-aMYk63Iy1T2KB4biMdXBw5LYJhXKpg8Eb34lL1r8XpjbyZIIcNFgbTKmvfX_n00lvXb1r132xl9_etqxg2V1IrxVjJO8YnybSQvIN5ffuvH3keMTjf8soTpCMUb_BzZZJX7rNsjLSgjCHPgo7Zz-vTlzXneIHM18Ei7VXfs0gm_HCJzH2hEFwmbz16h4yHz97R3BcFossp5gFZCK9pWeeGlngVaC9GFMI9GhAYBWodEvvjYRlNh44iwOGlFMsfx-4WxEBHTu13QucD2vu88UaFaSOOB7rwlGHa8Gic4yi3TzWwqRoBFdq6WhjNKoDCChkcHw0O-1FdkyGyEKph5XovPGzirOpay1PDrBEsOMu0MkaIbgheO6dkqpEFJ7Ui7QojeYilCdJrvkqmhqOhXyMU-ra7RnHhmAGRjjZpG9TIGJZP8LlynfDGEImt-cqxbMZj0iSmPSSV-RI0X1KZb51EH72yiq_jD_lOY-Pk27xLYEn5tefGv3vukpn-4OI8OT-5PNsks9hSoRu3yFTxPPbbEOYUZqecxu-rxAB_ |
| openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=A+hindered+settling+velocity+model+related+to+the+fractal+dimension+and+activated+sludge+flocs+characteristics%3A+Application+to+a+sludge+with+a+previous+fragmentation+and+flocculation+process&rft.jtitle=Separation+and+purification+technology&rft.au=Asensi%2C+E.&rft.au=Alemany%2C+E.&rft.date=2022-11-01&rft.pub=Elsevier+B.V&rft.issn=1383-5866&rft.eissn=1873-3794&rft.volume=300&rft_id=info:doi/10.1016%2Fj.seppur.2022.121812&rft.externalDocID=S1383586622013673 |
| thumbnail_l | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=1383-5866&client=summon |
| thumbnail_m | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=1383-5866&client=summon |
| thumbnail_s | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=1383-5866&client=summon |