The MBR Book: Principles and Applications of Membrane

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D R IVE R S R EST R AI N TS Bathing water treatment directive 1.4.1 Legislation UWWTD ISO14001 Industrial effluent treatment Marinebased applications Lack of legislation Delay in legislation Industry uses cheapest option Rising cost of municipal sewer Economic situation Interest in technology Mature markets Public concern Age of existing plants Eutrophication Introduction 5 Figure 1.3 Forcefield analysis, growth drivers and restraints. Factors influencing the market both positively (“drivers”) and negatively (“restraints”) are shown, the longer arrows indicating the more influential factors. Dotted lines indicate where the influence of a particular factor on the European market is subsiding (Frost and Sullivan, 2003). There appears to be little doubt that the major driver in the MBR market today is legislation, since it enforces more stringent water quality outputs and water resource preservation globally, often through recycling, and therefore demands that organisations re-evaluate their existing technology in the light of the new requirements. A number of reuse and recycling initiatives have also been introduced to the same effect. In the European Union pertinent legislation is manifested as a series of acts relating to water and wastewater (Table 1.1), of which the most important with respect to MBRs are: ● The EC Bathing Water Directive (1976): This directive was designed to improve bathing water quality with respect to pathogenic micro-organism levels in Europe at selected localities and is currently under revision in order to both simplify and update it. The revised version is expected to be implemented in 2006. ● The Urban Waste Water Treatment Directive (1995): The purpose of this directive, which was agreed in 1991, is to protect the environment from the negative effects of sewage discharges. Treatment levels were to be set taking into account the size of sewage discharges and the sensitivity of the waters into which the discharges were to be released (Defra, 2006a). ● The Water Act: The Water Act, most recently amended and updated in 2003 (OFWAT, 2003), comprises three sections and relates to the abstraction and D R IVE R S R EST R AI N TS
6 The MBR Book Table 1.1 EC legislation Directive Aim or purpose Nitrates To reduce nitrate pollution in surface and groundwater as a result of farming activities, and prevent it in future Habitats To protect or restore habitats for wild flora and fauna Freshwater Fish To protect designated surface waters from pollution that could be harmful to fish Shellfish Waters To set maximum pollution levels for certain substances that can be toxic to shellfish Dangerous Substances To prohibit the release of certain dangerous substances into the environment without prior authorisation Groundwater To list substances which should be prevented from entering, or prevented from polluting, groundwater: it requires a system of prior investigation, authorisation and requisite surveillance to be put in place Urban Wastewater To set requirements for the provision of collecting systems and the Treatment treatment of sewage according to the size of the discharge and the sensitivity of the receiving surface water Drinking Water To set standards for drinking water to protect public health and maintain the aesthetic quality of drinking water supplies Bathing Water To set standards aimed at protecting the health of bathers in surface waters and maintaining the aesthetic quality of these bathing waters Surface Water To set quality objectives for the surface water sources from which Abstraction drinking water is taken Water Framework To achieve “good status” for all inland and coastal waters by 2015 impounding of water resources, regulation of the water industry and a miscellaneous section. ● The Integrated Pollution Prevention and Control (IPPC) Directive (1996) which applies to the industrial sector and is intended to minimise pollution from industrial operations of all types, often requiring organisations to upgrade their technology to meet stringent requirements to receive a mandatory permit to continue operation. Obtaining a permit requires organisations to demonstrate their plant operates on the basis of the best available technique. ● The EU Landfill Directive: promulgated in 1999, its purpose is to encourage waste recycling and recovery and to reduce waste levels. The directive addresses the pollution of surface water, groundwater, soil and air, and of the global environment, including the greenhouse effect, as well as any resulting risk to human health, from the landfilling of waste, during the whole life cycle of the landfill (Defra, 2006b). ● The EC Water Framework Directive: this came into effect in December 2000 and is the most substantial piece of EC water legislation to date (Defra, 2006c). This very comprehensive directive integrates many other directives concerning water resources and discharges and requires that all inland and coastal waters reach “good status” by 2015.
Page 2 and 3: The MBR Book
Page 4 and 5: The MBR Book: Principles and Applic
Page 6 and 7: Contents Preface ix Contributors xi
Page 8 and 9: Contents vii 4.2.5 The Industrial T
Page 10 and 11: Preface What’s In and What’s No
Page 12 and 13: Term Meaning Common units MLD Megal
Page 14 and 15: Contributors A number of individual
Page 16 and 17: Contributor(s) Association/Organisa
Page 18 and 19: Introduction With acknowledgements
Page 20 and 21: such as the filtration market, tech
Page 24 and 25: Introduction 7 Much of the legislat
Page 26 and 27: of non-point source pollution contr
Page 28 and 29: exploitation index (WEI), the value
Page 30 and 31: 1 500 000 1 250 000 1 000 000 750 0
Page 32 and 33: Alternative immersed FS and HF memb
Page 34 and 35: 1.6 Conclusions Whilst the most sig
Page 36 and 37: Introduction 19 USEPA (2006b) www.e
Page 38 and 39: Fundamentals With acknowledgements
Page 40 and 41: they can be put, which then provide
Page 42 and 43: 3µm (a) (b) membrane is chemically
Page 44 and 45: Table 2.2 Membrane configurations C
Page 46 and 47: 2.1.4 Membrane process operation 2.
Page 48 and 49: only pseudo-steady-state (or stabil
Page 50 and 51: P max P dP/dt backwash cycle t b Ba
Page 52 and 53: Fundamentals 35 2.1.4.6 Critical fl
Page 54 and 55: neo-exponential increase at fluxes
Page 56 and 57: Screened raw sewage biologically ar
Page 58 and 59: Table 2.4 Microbial metabolism type
Page 60 and 61: which affords the operator complete
Page 62 and 63: Cumulative %ile undersize 1 0.8 0.6
Page 64 and 65: occurs from the surrounding air to
Page 66 and 67: (Madoni et al., 1993). The inter-re
Page 68 and 69: Viscosity (mPa s) 100 10 1 Viscosit
Page 70 and 71: on discharged P levels have been im
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Membrane process mode Diffusion Ext
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energy demand in kWh/m 3 permeate p
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Table 2.5 System facets of denitrif
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Fundamentals 61 Moreover, the poten
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iomass. There are also issues with
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Table 2.6 Effect of pore size on MB
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Fundamentals 67 fouling to be influ
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Fundamentals 69 fouling (i.e. membr
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2.3.6 Feed and biomass characterist
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Fouling relative distribution (%) 1
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has been proposed by Cho and co-wor
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Fundamentals 77 in the influent. Ab
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MLSS sample Centrifugation 5 min 50
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Table 2.11 Concentration of SMP com
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Fundamentals 83 correlation of MBR
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(Cui et al., 2003) by inducing liqu
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Fundamentals 87 air cannot be used
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Table 2.12 Dynamic effects Determin
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Fundamentals 91 Table 2.13 Sub-crit
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Fundamentals 93 sludge (Cho and Fan
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Fundamentals 95 2.3.9.2 Employing a
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Fundamentals 97 Whilst ultrasonic c
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and immersed hybrid PAC-MBR (Kim an
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Lastly, the vast majority of all st
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Fundamentals 103 Brookes, A., Judd,
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Fundamentals 105 Côté, P., Buisso
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Fundamentals 107 Fuchs, W., Schatzm
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Fundamentals 109 Howell, J.A., Chua
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Fundamentals 111 Krauth, K. and Sta
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Fundamentals 113 Liu, R., Huang, X.
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Fundamentals 115 Nielson, P.H. and
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Fundamentals 117 Sato, T. and Ishii
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Fundamentals 119 Van Lier, J.B. (19
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Fundamentals 121 Zhang, Y., Bu, D.,
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Design With acknowledgements to: Ch
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Other contributions to pumping ener
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where J c is the cleaning flux. Fro
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Table 3.1 Main features of aeration
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Table 3.2 Biological operating para
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Table 3.3 Physical operating parame
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Table 3.4 Comparative pilot plant t
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Table 3.7 O&M data Design 137 Kubot
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Table 3.8 Feedwater quality, PLWTP
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Table 3.11 Cleaning protocols for t
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Figure 3.1 The planned location of
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Table 3.14 O&M data, Pietramurata W
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Design 147 Table 3.17 Design inform
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Maintenance CIP was conducted throu
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Permeability, LMH/bar 800 700 600 5
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Table 3.22 Summary of pilot plant p
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Table 3.25 Feedwater specification
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Table 3.34 Aeration design Paramete
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In short, the design calculation de
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complications arise when estimating
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Chapter 4 Commercial Technologies W
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4.1 Introduction Available and deve
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Commercial technologies 167 suction
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synonymous with R V Equation (3.13)
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(a) (b) Figure 4.8 The Huber VRM ®
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and is very robust. However, the la
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Commercial technologies 175 (a) (b)
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(a) (b) (c) Commercial technologies
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Other equipment 1.11% Process air b
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Thus far, almost all of the install
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Figure 4.22 A rack of Memcor B10R m
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Tensile elongation retention (%) 10
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Figure 4.28 Pilot plant at Mooka Co
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at 10 000-12 000 mg/L. The membrane
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4m 4m 1m Commercial technologies 19
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Figure 4.36 Ejector aerator Commerc
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Denitrification Nitrification Waste
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modules, with pore sizes ranging fr
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(a) (b) Figure 4.46 (a) Han-S Envir
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aerobic counterpart. This may be pa
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of the particularly large-diameter
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(c) air channelling, the risk of wh
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Case Studies With acknowledgements
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5.1 Introduction Membrane Bioreacto
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Case studies 211 Table 5.1 Comparis
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Case studies 213 0.6 m 3 per unit.
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Case studies 215 area of 15 840 m 2
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Aeration tank 1 FBDA FBDA 32 x J200
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Case studies 219 In this UNR config
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Table 5.6 Design criteria, Running
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Works inlet Inlet works Storm tank
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Case studies 225 to be treated to a
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Case studies 227 membranes, assembl
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Figure 5.16 A Naston package plant
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Air Influent DN N M Figure 5.18 The
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Table 5.9 Toray membrane-based MBR
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Figure 5.23 Aeration tank and cover
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Figure 5.24 The original plant at B
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Main permeate header Permeate pump
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Case studies 241 flow. Sludge waste
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Table 5.15 Water quality data, Unif
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TMP (Kpa) 80 70 60 50 40 30 20 10 0
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10 LMH; the plant operated at fluxe
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Table 5.17 Feed and treated water q
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Table 5.18 Water quality, Sobelgra
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Figure 5.37 Airlift municipal WWTP,
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Case studies 255 has been 20 g/L, b
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Case studies 257 The company had in
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Filtrate (ml) 25 20 15 10 5 IIndust
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Inflow Buffer tank Filtration Denit
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Figure 5.45 The VHP MBR (a) (b) Cas
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Figure 5.47 The Eden Project MBR Ba
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Table 5.25 Basis for process design
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5.4.7 Other Orelis plant Case studi
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two membrane module configurations.
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Appendix A Blower Power Consumption
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or or (A.4) where � is the ratio
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Appendix B MBR Biotreatment Base Pa
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Y 0.61 g VSS/g COD Fan et al. (1996
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Appendix C Hollow Fibre Module Para
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L being the internal module length
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Appendix D Membrane Products
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Table D.3 Membrane module details o
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Table D.4 (continued) Supplier Asah
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Table D.5 Membrane module details o
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Appendix E Major Recent MBR and Was
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Conference title meet Dates Locatio
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Event Last held Location Website Fo
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Appendix F Selected Professional an
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Japan Water Works Association (JWWA
Page 320 and 321:
Nomenclature � Separation (m) �
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Nomenclature 305 Rsup Hydraulic res
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Abbreviations The following lists k
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PES Polyethylsulphone PP Polypropyl
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Glossary of Terms A number of key t
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Floc Aggregated solid (biomass) par
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Glossary of terms 315 Relaxation Ce
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Index A � factor 47, 49-50 and vi
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investment 9 for membrane replaceme
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I Iberia 2 immersed biomass-rejecti
Page 340 and 341:
Nordkanal wastewater treatment work
Page 342:
SUR unit 180 surface porosity 30 Su
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