Water and Energy - Draft Report of the GWRC Research ... - IWA

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homogenized and blended with waste wood and/or leaves to create a mulch, or even a fuel to be burned in boilers to create steam power for electrical generation. The PUB in Singapore currently processes over 800 tons of this waste material that is a burden to dispose of and costly to handle and transport. The PulverDryer offers PUB the opportunity to reduce overall production cost as well as create a valuable commodity from this waste material. The PUB project commenced operational testing in October of 2004 with all three stages running successfully. Target moisture levels and sizing of material was achieved during initial runs. PulverDryer management will utilize this test site during the next six months to perfect PulverDryer technology and equipment systems. Variable Salinity Plant (VSP) – in progress The Variable Salinity Plant (VSP) produces potable water from rainwater and seawater as well as smaller streams. By tapping on the canal water, the pressure required for the RO process is much lower than that is required for desalination. Thus resulted in energy savings. In addition to the above, PUB is also looking into the following projects: Hydrodynamic Study of Hollow Fiber Membrane Bioreactor to Minimize Energy Consumption and Membrane Fouling – under evaluation This project is a collaboration project between PUB, A-Star, and Siemens. The objective is to improve cost effectiveness of MBR Technology by substantially reducing energy use by optimizing energy use through fluid dynamic modeling within the MBR and by eliminating the addition of energy added for biofouling prevention with VLR (Vertical Loop Reactor) technology. Excess Biosludge Elimination and Trace Organics Removal Using Integrated Membrane Multi-reactor (IMMS) Water Reclamation System – under evaluation This project presents a critical important scheme for providing the solutions for excess biosludge elimination and trace organics removal using NTU’s newly patented IMMS technology. This multi-disciplinary research project is aimed to develop the knowledge based necessary to understand the minimization or elimination of biosludge produce, trace organic removal, membrane fouling mechanism and increase water quality. If successful, the project is potential to gain efficiency improvement in energy usage & land minimization for sludge incineration ash Pilot Testing of Membrane Distillation Bioreactor for Wastewater Reclamation – under evaluation The Membrane Distillation Bioreactor (MDBR) is a novel approach to wastewater reclamation developed at NTU through the Temasek Professor Programme with the help of IESE. Exploit (ASTAR) has taken out a patent on the technology, which has been taken to proof of concept stage from bench to small pilot plant (capacity 100 to 200 litres per day). The aim of this project is demonstrate the viability of the process at a scale of 500 to 700L per day; this is a scale up of 10x requiring about 10 m 2 membrane area. The MDBR process replaces the membrane filtration membranes of conventional MBRs with Membrane Distillation (MD) membranes. The main advantages of the MDBR are, GWRC Water & Energy - Draft report 56
(i) The MD membranes only transfer permeate as vapour, so the quality of the product stream can be very high with negligible TOC. Indeed the quality can be as good as, and possibly better than, the product from RO in a conventional reclamation plant ; in essence the MDBR offers the potential for NeWater in one step; (ii) The MDBR process operates at ambient pressure and only requires a relatively low level of electrical power for circulation and air supply (in contrast to the RO step in conventional reclamation plant); (iii) Although the MDBR requires a thermal input it can be low grade waste heat as the process operates at
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Global Water Research Coalition All
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Disclaimer This study was jointly f
Page 5 and 6: GWRC Water & Energy - Draft report
Page 7 and 8: 1. Introduction 1.1 Background Over
Page 9 and 10: 2. Knowledge gaps and research need
Page 11 and 12: Climate change - Water patterns - G
Page 13 and 14: 2.3 Project proposals The participa
Page 15 and 16: achieve the above worded objectives
Page 17 and 18: 4 Conclusion and follow up The main
Page 19 and 20: PROJECT DESCRIPTION 1. Project Titl
Page 27 and 28: Project description for the Tools f
Page 33 and 34: PROJECT DESCRIPTION 12. (Toolbox #4
Page 35 and 36: PROJECT DESCRIPTION 14 Project titl
Page 37 and 38: Appendix B Tuesday, 19 February Pro
Page 39 and 40: Annex C. List of participants Name
Page 41 and 42: Annex E. List of identified knowled
Page 43 and 44: 9. Energy recovery, content and man
Page 45 and 46: Annex G. Information on Member and
Page 47 and 48: Identifies and prioritizes research
Page 49 and 50: drafting the protocol as part of th
Page 51 and 52: polluted areas. If it takes place i
Page 53 and 54: Organisation: PUB Singapore Contact
Page 55: AVR, Netherlands. The AVR pilot is
Page 59 and 60: Organisation: STOWA - Foundation fo
Page 61 and 62: Organisation: UKWIR Contact person:
Page 63 and 64: Organisation: WERF Contact person:
Page 65 and 66: A new project to develop parameters
Page 67 and 68: Organisation: WSAA & CRC WQT Contac
Page 69 and 70: The most significant future energy
Page 71: ^^ includes 78,191 ML of water supp
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