Combining submerged membrane technology with anaerobic and ...

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OLR and ORR(kgCOD ·m -3·d -1 )pHOA (mg·L -1 )COD removal (%)IA/TAMembrane fouling in an AnMBR treating industrial wastewater at high total solids concentrationswith alkalinity control, the lowest COD concentrations measured in the permeate wereabove 2 g·L -1 . Therefore, an aerobic post-treatment would be required in order to obtain aneffluent suitable for indirect discharge (threshold value is 1 g·L -1 ).abc807060504030201007.47.27.06.86.66.46.26.05.00 50 100 150 200Time (d)0 50 100 150 200Time (d)0.60.50.40.30.20.10.08000700060005000400030002000100004.03.02.01.00.00 50 100 150 200Time (d)Figure 7.2. a) COD removal efficiency (•) and alkalinity ratio (); b) Organic acids (OA)concentration (•) and pH (); c) OLR and ORR in the in the AnMBR treating industrialherbal extraction wastewater.181
g DOC adsorbed / g PACChapter 77.4.2. Fed-batch experiments to study the optimum PAC dosage in theAnMBRDifferent PAC and GAC were tested (data not shown) in order to select the bestoption. Contrary to the affirmation stated in the introduction supported by some authors(Barker and Stuckey, 1999; Akram and Stuckey, 2008), GAC did exhibit good OAadsorption rates, similar than those obtained with the PAC tested.In figure 7.3 can be observed the adsorption isotherm of the selected PAC. This wasthe best of the PAC and GAC tested in terms of adsorption capacity. The adsorptioncapacity of the PAC was determined by adding different PAC doses to a certain volume ofpermeate and measuring the residual dissolved organic carbon concentration (DOC) after24 h. The selected PAC presented a good adsorption capacity, in the range of thosereported for the adsorption of organic compounds in activated carbon used in this kind ofapplications (BREF, 2003).0.250.200.150.100.050.000 250 500 750 1000DOC (mg·L -1 )Figure 7.3. DOC Adsorption isotherm of the selected PAC.The first experiments with PAC were performed using the permeate from the AnMBRin order to determine the adsorption capacity of possible foulants such as BPC or TEP aswell as the adsorption capacity of organic acids in case of shock load of the reactor. Ascan be observed in figure 7.4, all the studied parameters presented a very good removalwith PAC dosages of 1.5 g·L -1 . It has to be taken into account that the adsorption of CODwas not the objective of PAC dosage, but the improvement of filterability and the possiblemitigation of VFAs accumulation during a shock load event. Therefore, the dosage ofhigher amounts of PAC than 1.5 g·L -1 was not justified considering the adsorption of BPC,TEP and OA. In figure 7.4b the accumulation of organic acids in the flask without PAC can182
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UNIVERSIDAD DE SANTIAGO DE COMPOSTE
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padres Macario y Marisa, les agrade
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2.1.2. Nitrogen compounds 662.1.2.1
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Chapter 4: Combining UASB and MBR f
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Objetivos y resumenEsta tesis se en
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Objetivos y resumenpermeabilidad de
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Objetivos y resumenuno de los pará
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Objetivos y resumenel sistema propu
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Objetivos y resumenconcentraciones
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Obxectivos e resumoauga tratada. O
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Obxectivos e resumoNo Capítulo 3,
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Obxectivos e resumog·L -1 , valore
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Obxectivos e resumoparámetros clav
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Objectives and summaryThis thesis i
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Objectives and summaryOn the basis
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Objectives and summaryfrom the MBR
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Objectives and summaryconsidering t
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Chapter 1IntroductionSummaryIn this
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IntroductionThe combination of memb
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IntroductionThe membranes should ha
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Introductionof water. Energy saving
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number of plants (cum. values)Intro
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IntroductionSubmerged MBR system in
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Introductionchanges of the foulant
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Introductionof 2% NaOH and 0.5% cit
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IntroductionFigure 1.8. Posible rel
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IntroductionSide-stream MBRs involv
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Introductionutilizes the advantages
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Introductionmeans of settlers, of s
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IntroductionUASB, achieving total n
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IntroductionEvenblij, H., van der G
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IntroductionMtinch, E.V., Ban, K.,
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IntroductionYang, S., Yang, F., Fu,
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Chapter 22.1. Liquid phaseIn this s
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Chapter 2where:M fas: molarity of F
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Acetic Acid (mg·L -1 )Chapter 2VFA
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N-NO 2-(mg·L -1 )Chapter 22.1.2.2.
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N-NO 3-(mg·L -1 )Chapter 2interfer
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P-PO 43-(mg·L -1 )Chapter 2Interfe
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Chapter 2alkalinity (IA), which is
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Chapter 22.2.3. Sludge volumetric i
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Chapter 2eq. 2.10eq. 2.11eq. 2.12Th
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Carbohydrate (mg·L -1 )Chapter 2In
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TEP (mgXG·L -1 )Chapter 22.4.4.4.
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Chapter 2Ripley, L.E., Boyle, W.C.,
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Chapter 33.1. IntroductionIn recent
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Chapter 3same in both modules; tap
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Chapter 3phases were varied (table
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Chapter 3to time was higher than 10
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COD removal (%)Chapter 3120100Perio
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DTN and N-NH 4+ (mg·L-1 )DTN and N
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Chapter 3operated with high MLTSS c
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TMP (kPa)TMP (kPa)TMP (kPa)TMP (kPa
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SMP carbohydrates (mg·L -1 )Chapte
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Volume (%)Chapter 3Therefore, the c
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Chapter 3identical to that of the c
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Chapter 3Massé, A. Spérandio, M.,
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Chapter 44.1. IntroductionThe appli
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Chapter 4support were added in this
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Chapter 4This cleaning was performe
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COD (mg·L -1 )COD removal (%)OLR (
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Chapter 4the recirculation ratio be
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(mg·L -1 )Chapter 4and ammonium) n
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Chapter 4recirculation from the MBR
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Chapter 4days 57 (period I) and 316
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Chapter 4excellent COD removal perf
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Chapter 4Rosenberger, S., Evenblij,
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Page 149 and 150: Chapter 5operating with similar mem
Page 151 and 152: Chapter 5behaviour might be related
Page 153 and 154: Fouling Rate (Pa·min -1 )Fouling R
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Page 157 and 158: Chapter 5in table 5.3 showed that h
Page 159 and 160: Chapter 5Ho, J., Sung, S. 2010. Met
Page 162 and 163: Chapter 6Denitrification with disso
Page 164 and 165: Denitrification with dissolved meth
Page 174 and 175: (mg·L -1 )Denitrification with dis
Page 176 and 177: DTN effluent (mg·L -1 )CH 4 desorb
Page 186 and 187: Chapter 7Membrane fouling in an AnM
Page 188 and 189: Membrane fouling in an AnMBR treati
Page 196 and 197: TEP removed (mg·L -1 )OA removed (
Page 198 and 199: R col (m -1 )SRF (m·kg -1 )Membran
Page 200 and 201: BPC, cBPC and TEP concentration(mg
Page 202 and 203: Cake and Colloidal Resistance (m -1
Page 208: Membrane fouling in an AnMBR treati
Page 211 and 212: Conclusionessentido, el uso de una
Page 213 and 214: Conclusionesensuciamiento de la mem
Page 215 and 216: Conclusiónspresenza de soporte de
Page 217 and 218: Conclusións6. Aplicabilidade e per
Page 219 and 220: ConclusionsMoreover, biomass concen
Page 221 and 222: Conclusionstechnology and interesti
Page 223 and 224: List of symbolsHFHRTHyVABHollow Fib
Page 225 and 226: List of symbolsFR/J Normalized Foul
Page 227 and 228: List of publicationsBrand, C., Sán
Page 229: List of publicationsConference on E
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