Towards improved urban water management through Aquatic Science Centres in Singapore

1. Towards improved urban water management through Aquatic Science Centres in Singapore Urban Water Channels

2. SDWA Singapore Drinking Water Catchment:½ land area in 2006;⅔land area in 2009 will form catchment www.nea.gov.sg/cms/pcd/Management%20of%20Catachment%20Water%20Quality.pdf

3. SDWA Increased drinking watercatchment + ABC Program will lead to Transformations …..

4. SDWA Transformations …..

5. SDWA Strategies to Manage Catchment Water Quality by PUB www.nea.gov.sg/cms/pcd/Management%20of%20Catachment%20Water%20Quality.pdf

6. SDWA Urban Waters improving process knowledge for better management • An Opportunity: • ABC Waters Programme Umbrella • Recirculation scheme (Marina -> Upper Pierce -> channels) • A Need for Knowledge: • Can we improve water quality using natural processes? • Reduce turbidity? • Make canals look more natural? • Convert waterways system into ‘distributed treatment plants’? • Can we ensure flooding risks will not increase? • Catering for aesthetics and PPP goals

7. Project aim to understand the fundamental processes underlying freshwater system functioning and to generate knowledge to improve the water quality and quantity, ecology and appearance of urban water bodies. Multidisciplinairy approach: • Hydraulic Engineering - Channel flow, hydrodynamics, weirs, rainfall runoff • Morphology – (Preventing) erosion of mud bed, suspended sediment behaviour • Water Quality – Nutrients, water colour, cleaning • Ecology – Macrophytes interaction with flow and water quality, Filterfeeders SDWA

8. SDWA interdisciplinary research focussing on integration of knowledge Knowlegde & Expertise Software integration Field Laboratory

9. SDWA 4 topics linked through Aquatic Science Centre ‘Pandan Canal’ • To build a comprehensive knowledge base on the water quality improvement and monitoring capabilities of organisms (integration of data, tools and process based knowledge) • To develop an integrated approach for understanding, designing and controlling urban water systems (better understanding of rainfall-runoff processes and its use in water quantity and quality management) • To quantify and model processes involved in the interaction between hydromorphology, water quality and biological organisms (via interdisciplinary experimental work at ASC and lab and modelling tools) • To determine the effects on water quality by understanding physico-chemical and biological processes at the bed-waterinterface (detailed chemical process understanding and upscaling of this knowledge to water quality management)

10. Programme Layout:Aquatic Science Centre – Pandan Canal

11. SDWA In-lab & On-site Build on-site flumes & mesocosms Deliverables Understand & quantify processes Trained manpower Papers • ~16 papers • 4 Conf. papers • 4 MSc • 4 PhD • 4 Res Fellows

12. SDWA Development of Common Tools & Capabilities • Aquatic Science Centre • Aquatic plant growth facilities and nursery • Flumes in hydraulics laboratory • Custom designing of equipments for measurements at ASC and catchment areas

13. SDWA Approaches • To build a comprehensive knowledge base on the water quality improvement and monitoring capabilities of organisms • B L Ong, P Kumar, H Tan, S. Swarup • To develop an integrated approach for understanding, designing and controlling urban water systems • S Y Liong, Raju, Toine, Tsai, Roop, Bala, Biswas • To quantify and model processes involved in the interaction between hydromorphology, water quality and biological organisms • Ellis, Ann • To determine the effects on water quality by understanding physico-chemical and biological processes at the bed-water interface • S Swarup, H K Lee, Arjan

14. SDWA topic 2 Approach • Literature review on existing process descriptions • Development of lacking process descriptions • Determining the validity of the processes • Experimental research to validate urban water processes either in a lab, on top of a building or in the field • Development (of software) of parts of the instrument: • Connection of the quality processes to the quantitative water flows • Case Singapore • Case NL

15. SDWA Location ASC Pandan Canal 325

16. SDWA Tank with 500 m3 capacity (*) Some possible fill up with sand to increase working floor • spill water • samples 2x! Recycled water - In-situ probes - Possible adding of nutrients Fresh water Flow control on spill/fresh water addition ASC Pandan Canal

17. SDWA supply pipe sprinkler system partition walls gutter hinge downsprout surface cover surface water turnable roof moveable back wall rain water container(incl. pump) concrete floor soil with groundwater sewer Rainfall – Runoff experiment site

18. Vegetation roof experiment site SDWA

19. SDWA width: 5 cm 0,2 lt. h≈5,5 cm H L≈13,1 cm L The size of a bucket with a contents of 0,2 liter and a width of 5 cm leads to the dimensions of an approximate height (H) of 30cm and length (L) of 50 cm.At the top of this contraption a funnel has to be added, below it a weighing platform.The total height will then come to about 50 cm. Vegetation roof experiment site