Presented By: Ir Stanley LAUKingsford Environmental
Jointly Prepared By: Professor Kin Man HOIr Stanley LAU
CONTENTS
• Development & Advancement of Sewage and Sludge Treatment Technologies• Roles of University-Government-Industry in
Technologies Development & Applications•Our Experience Sharing
DEVELOPMENT & ADVANCEMENT OF SEWAGE AND SLUDGE TREATMENT
TECHNOLOGIESNEEDMore Renewable Energy, Decarbonization and
Energy Neutral (Less OPEX)Energy Recovery from Sewage and SludgeMore efficient primary solids removal for anaerobic
digestion Better PST and anaerobic digestion technologies Better design with 3-D CFD Modelling
Advanced Biological Nitrogen Removal Less OPEX and organic carbon requirementsNitritation (Short-cut of Nitrification)Autotropic Nitrification and Denitrification
DEVELOPMENT & ADVANCEMENT OF SEWAGE AND SLUDGE TREATMENT
TECHNOLOGIES (CONT’D)NEEDMore efficient Operation Less OPEX
Maximization Each Unit Operation –Simulation and Dynamic Process Modeling(Biowin) Better flow-distribution and flow-balancing - 3D CFD (Fluent, Flow 3D) Simulation Better liquid-solids separation for the grit removal, primary & secondary sedimentation
tanks - 3D CFD (Fluent, Flow 3D) Simulation with liquid-solids separation. Very compact technologies (Compact SBR, MBBR & AGS) in Hong
Kong for caverns and/or upgrading without increasing footprint. Effluent reuse
NEED more & more…
GOVERNMENT- R&D Funding- Legislation- Consultancy
UNIVERSITY- Education- R&DINDUSTRY
- Implementation- Design- Construction- Operation
UGI ROLES IN TECHNOLOGIES DEVELOPMENT & APPLICATION
OUR EXPERIENCE SHARINGIn 1997~1998, we worked together with The University of Queensland• ArchSD Contract - Pilot plant investigation of Sheung Shui Slaughterhouse House WWTP• DSD Contract – Process Design Confirmation Using Bench-Scale Systems for Shek Wu Hui STW
Upgrading
Sheung Shui Slaughterhouse Underground WWTP Bio-reactor
Bench-Scale MLE System for Upgrading of Shek Wu Shui STW
OUR EXPERIENCE SHARING (CONT’D)
In 2002~2005, we worked with DSD, HKUST & Mitsubishi Leading to Full-Scale MBRs• Membrane Bio-reactor Pilot Plant Trial for Centrate Treatment at Shatin STW• Membrane Bio-reactor Pilot Plant Trial at Shek Wu Hui STW and Stonecutters Island STW• Pilot Plant Trial of Membrane Bio-reactor and Reverse Osmosis at Shek Wu Hui STW
MBR Effluent Centrate
MBR Pilot Plant Trial for Centrate Treatment in 2002
MBR Pilot Plant Trial at Shek Wu Hui STW in 2003
Aerial View of Mui Wo MBR STW
In 2010, we worked with DSD & The University of Queensland• Full Scale Testing for Determination of Maximum Treatment Capacity at
Stanley STW with and without Bio-film Carriers
Setup of Bench-scale Reactors for Testing with and without Bio-film Carriers Stanley STW Bio-reactor
OUR EXPERIENCE SHARING (CONT’D)
University Developed CFD and IWA Activated Sludge Modelling have been extensively used in STW Flow & Process Design for DSD since 1996:
Shek Wu Hui STW in 1996 and 2009;Tai Po STW in 2007 and 2013;Sai Kung STW – Existing FSTs Performance
Evaluation in 2005;Shatin STW – MLE process and Upgrading
Existing and New FSTs in 1998 and 2006;Stonecutters Island STW – Upgrading Existing
and New CEPT Tanks with Integrated PST and Flow Distribution CFD Modelling in 2008
Shatin & Tai Po STWs – Enhance the hydraulic performance of the new effluent UV Channels in 2009
Shatin STW – Existing PSTs 3D CFD in 2016 - 17
Inlet Zone Transitional Zone
Uniform Velocity Zone
Effluent Zone
Inlet Baffles
Mid-TankBaffles
Settled Primary Sludge Protection Braffles
In-Board Launders
Lamella Plates/Tubes
OUR EXPERIENCE SHARING (CONT’D)
Flow field & SS distribution for FST
Inlet Energy Dissipating & Flocculation Baffles & Mid-Tank Baffles at Stonecutters STW
3D CFD of PST Inlet
OUR EXPERIENCE SHARING (CONT’D)
Density Current Baffle at Tai Po STW
PolyU Pilot Plants Installation In Progress at Stonecutters Island STW
OUR EXPERIENCE SHARING (CONT’D)
• Contact Angle Analysis for different biofilm carriers
• Testing of Biomass Attachment Ability on different biofilm carriers
• Sludge Digestibility Test for different sludges (AGS, MBBR, SANI, CAS)
• Maximum Specific Nitrifier Growth Rate Determination for different sludges
Maximum Specific NitrifierGrowth Rate Testing Apparatus
Gas Chromatography Mass Spectrometry
Incubator
Lab Scale Tests collaborated with PolyU for Pilot Plant Testing at Shatin STW
OUR EXPERIENCE SHARING (CONT’D)
OUR EXPERIENCE SHARING - INTERNATIONAL EXPERIENCE
• Compact SBR Technology Initiated by The University of Queensland
• Further Development and Full-Scale Implementation by Kingsford Environmental
• Very Advanced Bio-Technology• Very good sludge settle-ability• – SVI60 as low as ~50 mL/g• Incorporate Nitritation-Denitritation
• Over 300 Installations• Many large-scale STWs in SE Asia
• 2018 - Bunus STW II, 168,0000 m3/Day, Malaysia;• 2016 – LNMB STW, 75,000 m3/Day, Philippines;• 2014 – Yen So STW, 200,000 m3/Day, Vietnam;• 2005 – Jelutong STW, 270,000 m3/Day, Malaysia.
Granular Sludge Application
OUR EXPERIENCE SHARING - INTERNATIONAL EXPERIENCE
(CONT’D)
OUR EXPERIENCE SHARING - INTERNATIONAL EXPERIENCE
(CONT’D)
Nereda Pilot Test Plant at Shatin STW, Hong Kong (Testing in progress)
OUR EXPERIENCE SHARING - INTERNATIONAL EXPERIENCE
(CONT’D)
MBBR Pilot Test Plant &