Innovative hybrid MBR systems to promote water reuse
LIFE aWARE
LIFE11 ENV/ES/000606 AWARE
Authors: C. Echevarria, I. Martín, S.Casas (Cetaqua)A. de la Cal, M. R. Boleda, B. Galofré, J. Martín (Aigües de Barcelona)
Presenter: Carlos Echevarría Díez-Canedo(Cetaqua)
Copyright © 2016 by CETAQUA, Centro Tecnológico del Agua Fundación PrivadaAll rights reserved. This Presentation or any portion thereof may not be reproduced or used in any manner whatsoever without the express written permission of CETAQUA, Centro Tecnológico del Agua Fundación Privada, except for the use of brief quotations in a presentation review.
CONFIDENTIAL
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LIFE aWARE: objectivesLIFE11 ENV/ES/000606 AWARE
The overall objective of the LIFE aWARE project is to promote water reuse by consolidatingknowledge about a wide range of water reclamation technologies and identifying key issues regardingthe production, demand and distribution of reclaimed water.
ACTIVATED CARBONADVANCED OXIDATION
PROCESSESREVERSE
OSMOSIS/NANOFILTRATION
Water reclamation technologies focused onremoval of PP and CEC
Management of reclaimed water distributionnetworks
Copyright © 2016 by CETAQUA, Centro Tecnológico del Agua Fundación Privada
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MBR-PAC-NF PROTOTYPE ADVANCED OXIDATION PILOT REMOVABLE PIPES PROTOTYPE
To asses the influence of Advanced Oxidation
Procecess (O3 + H202 + UV) on:
• Removal of PP and CEC
• Further disinfection requirements
• UF and RO membrane performance and their
water quality
To evaluate under controlled conditions biofilm
development with reclaimed water
• Hydraulic regimes
• Chlorine doses
To asses the influence of PAC addition on:
• Removal of PP and CEC and metals
• Membrane performance in an MBR and
capillary NF
• Asses the potential for NF concentrate
recirculation to the MBR and no brine
generation
LIFE aWARE: objectives
Copyright © 2016 by CETAQUA, Centro Tecnológico del Agua Fundación Privada
CONFIDENTIAL 4
Objetives: MBR and NF with PAC
POWDERED ACTIVATED CARBON (PAC)
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BIOLOGICAL TREATMENT
UF
CapillaryNF
PRIMARY SETTLERS
El Baix Llobregat WWTP - WRP
The demonstration site of the project is the WWTP and WRP of El Baix Llobregat (Barcelona), which allows a
comparison in terms of energy demand and removal efficiencies between the actual plant and the prototypes.
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PAC-MBR demonstration plant
MBR plant: The MBR is fed with primary effluent from Baix Llobregat WWTP :
• Biological treatment (23 m3) for organic carbon, nitrogen and phosphorus removal (FeCl3) unit that comprises anaerobic (2,5 m3),
anoxic (5 m3) , facultative (2,5 m3) and aerobic tanks (13 m3).
PAC-MBR CHARACTERISTICS-OPERATION
Containerized 40 feet , automatic operation 24h / 7d
Treatment capacity 50-60 m3/d
MBR operation HRT: 9 -12 hourWaste: 300-500 L/dMLSS : 8-12 gSS/LPAC: 0,6-1,2 g/L
Membraneconfiguration
2 X Multitubular UF (UF1 and UF2)PENTAIR COMPAC 33V
Membrane área 33 m2/module
Fibre internal diameter 5,2 mm
MWCO: 20 nm
Material PVDF
Standard production 1,4- 2 m3/h
Operation
Airlift inside-outfiltration
Air sparging rate: 8-10-15 m3/h
Crossflow pump rate:15 m3/h
Filtration duration: 8-10 minHydraulic cleanings: BW and drainChemical cleaning: Oxidant (500 ppm NaOCl),acid (citric 0,5 %)
Copyright © 2016 by CETAQUA, Centro Tecnológico del Agua Fundación Privada
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The PAC-NF plant treats the MBR effluent
Counts with two nanofiltration lines (PAC-NF and NF) and a dosing
system of powdered activated carbon (PAC):
• Two parallel lines: with and without PAC
PAC-NF CHARACTERSITICS AND OPERATIONAL CONDITIONS
Containerized 40 feet , automatic 24h / 7d
Treatment capacity 50 m3/d
PAC Contact time: 30 min – 2hDose: 10 -100 mg/l
Membrane configuration Capillary inside-out filtrationPENTAIR HFW-1000
Membrane área 40 m2/module
Fibre internal diameter 0,8 mm
MWCO: 1000 Da
Material PES
Standard production 0,8-1,5 m3/h
Operation
Presurrized internalrecirculation
• Fluxes: 15-30 LMH
• Internal recirculation:0-4-12 m3/h
• Water recovery :50-60-75 %
• Filtration duration: 30-60-240 min
• Hydraulic cleanings:
• Forward flush
• Backwash
• Chemically Enhanced Forward Flush:
• Oxidant: NaOCl :250 ppm
• Acid: citric: 0,5 %
PAC-NF demonstration plant
CONFIDENTIAL
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CONFIDENTIAL 7
PP-CEC Detection limit(ng/L)
Acetaminophen <100
Atenolol <10
Atrazine <10
Carb. Epoxide <20
Carbamazepine <10
Codeine <20
Cotinine <10
Diclofenac <5
Diuron <15
Erythromycin<50
Isoproturon <10
Nonylphenol <50
Octylphenol <25
Pentaclorophenol <10
Simazine <15
Sulfametoxazole <10
Terbuthylazine <5
Analysis of PP & CEC
• 17 organic micropollutants (9 pharmaceuticals, 6 pesticides and 2
alkylphenols) were selected as target analytes in order to represent a wide range
of micropollutants occurring in waste waters.
• Analytical method developed:
• solid phase extraction (SPE) coupled online with
• liquid chromatography and tandem mass spectrometry (LC-MS/MS) with
electrospray ionization
Analysis of conventional and reuse parameters (RD 1620/2007)
• SS (standard methods 2540) and BOD5 (Standard methods 5210 B)
• Turbidity (Hach Lange 2100 Turbidimeter)
• COD (Hach-Lange LCI Test kits) and TN, NH4+-N , NO3—N, (Merck spectroquant test
kits).
• DOC (Shimadzu VSH-TOC analyzer)
• E.Coli were analyzed with IDEX Colilert quanti-Tray test kits
• Legionella pneumophila (ISO 11731, Detection and enumeration of Legionella)
Analytical Plan
Copyright © 2016 by CETAQUA, Centro Tecnológico del Agua Fundación Privada
Evaluation of the effect of powdered activated carbon (PAC) applied in the
MBR and the capillary NF in terms of:
Water Quality:
Conventional and reuse parameters defined in RD 1620/2007
Improvements on the removal efficiencies of selected organic
micropollutants by adding PAC.
Membrane performance:
Quantification of improvements in membrane fouling by adding PAC.
Quantification of the energy demand and chemical cleanings
requirements in the selected operational conditions
CONFIDENTIAL 8
RESULTS
Copyright © 2016 by CETAQUA, Centro Tecnológico del Agua Fundación Privada
CONFIDENTIAL 9
With the financial support of the
LIFE+ Programme of the European
Commission
LIFE11 ENV/ES/000606 aWARE
THANK YOU!Nacho Martin Garcia, PhD
Project [email protected]
Carlos Echevarría Díez-Canedo
Acknowledgements
Copyright © 2016 by CETAQUA, Centro Tecnológico del Agua Fundación Privada
All rights reserved. This Presentation or any portion thereof may not be reproduced or used in any manner whatsoever without the expresswritten permission of CETAQUA, Centro Tecnológico del Agua Fundación Privada, except for the use of brief quotations in a presentation review.
For further information, please, contact:
LIFE11 ENV/ES/000606 AWARE