innovative hybrid mbr systems to promote water reuse€¦ · pac-mbr characteristics-operation...

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

2

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

CONFIDENTIAL 3

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


CONFIDENTIAL 4

Objetives: MBR and NF with PAC

POWDERED ACTIVATED CARBON (PAC)


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.

CONFIDENTIAL 5

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 %)


6

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


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


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


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

[email protected]

Acknowledgements


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:

mailto:[email protected]

mailto:[email protected]

LIFE11 ENV/ES/000606 AWARE

innovative hybrid mbr systems to promote water reuse€¦ · pac-mbr characteristics-operation...

Documents