Water & Wastewater Asia January/February 2021

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42 VIEWPOINT called another municipality to share treatment chemicals by sending another tanker truck to get some from them to get through the shortage short term. No industry wants to have unexpected shutdowns due to power outages. Water treatment plants need to ensure at least partial standby electricity capability that automatically starts up when the system loses outside electricity sources. This should be for a minimum 24 hour duration that allows for a controlled and systematic shutting down of pumps, chemical feeders and valves (Photo 5). These are almost always diesel generators since the fuel can be stored for a very long time. The generators should automatically Photo 5: Emergency standby generators are a critical piece of water treatment plant infrastructure. Photo 6: One of three lines leaving a water treatment plant reservoir with an automatic fail-safe-closed valve that has the capability to be opened manually for emergency use by municipal firefighters 5 start and run once a week with the electricity going to ground to make sure they will run when needed. As part of the design of the facility some valves will be what is known as fail-safe-open or fail-safe-closed. Most industrial valves are controlled by air compressor systems and although they have compressed air storage tank systems they usually only last an extremely short time and only have enough stored compressed air when the power is lost to take care of a few critical systems. If there is a power outage then any valves that leave the facility reservoir should be of the fail-safeclosed variety. This will ensure that any water needed by emergency response teams such as fire fighting departments can still have access to reservoir water for at least a short time. The valves would just need to be manually opened (Photo 6). SUMMARY All populations in all countries should have access to clean, healthy and good tasting water at a reasonable cost. Trying to determine what a reasonable cost is can be quite challenging. And in some instances it can be difficult to explain 6 to a facility’s water customers why their potable water is very expensive compared to other areas of the same geographic region. They see large flowing rivers or deep lakes but have no understanding of how the water may be dangerous to their health without treatment due to pathogens, toxic chemicals or even tiny suspended particles that bacteria and viruses can hide beside to hide them from chemical additions such as chlorine used to disinfect the water. This is where good planning comes in. It should include public education and the surest and most cost effective way to get information out there is to give tours of the facilities to local schools and the general public. A new water treatment plant or even a large upgrade planning step checklist should be a tool in every manager’s tool kit. It can include such items as : • Review of customer water requirements. (public, industry, agriculture, firefighting) • Review of water health regulations. • Initial budget estimation. • Engineering plans. • Review of customer needs. • Review of budget estimation. • Review of engineering plans. • Customer feedback. • Finalisation of budget. • Construction or upgrades. • Constant ongoing construction budget review. • Constant review of health authority regulations. ABOUT THE AUTHORS Orest Protch retired in January 2020; Choosing to stay busy he started putting on week-long seminars in basic metallurgy. In March 2020, he went to Ottawa, Ontario, Canada, to put on a week-long metallurgy seminar for a special projects team of the DND, Canadian Department of National Defence. His daughter, Janina, is a chemist for a specialty analytical testing laboratory. January / February 2021 • waterwastewaterasia.com
VIEWPOINT 43 Top five considerations for a brownfield facility upgrade By Alicia Chow, Veolia Water Technologies 1 2 3 5 4 Managing a brownfield facility often comes with many challenges, including issues with ageing plant components and having to adapt to new regulatory requirements. How does one decide if a brownfield water or wastewater treatment plant is due for an upgrade? It is important to assess the plant’s current process performance against the desired outcomes or required standards before deciding if the business should modify, update, or upgrade existing treatment processes. Here are the top five considerations for managers evaluating an upgrade for their brownfield water or wastewater treatment plant: #1: Changes to business requirements In today’s competitive business environment, manufacturers often grapple to meet new requirements due to changing market demands or new corporate sustainability goals. Both scenarios can bring about changes to water quality specifications and treatment capacity, which makes alterations to existing treatment systems unavoidable. It is then imperative for businesses to carefully examine how their business goals can be met through the selection of a suitable water treatment system. Businesses that are looking to streamline production processes can consider modular water treatment systems, which allow additional treatment units to be added or removed from a system quickly and efficiently, depending on their requirements. This ability to scale a system up and down also offers January / February 2021 • waterwastewaterasia.com
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Page 5 and 6: CONTENTS 3 37 45 FOCUS 25 Unlocking
Page 7 and 8: THE NEWS 5 and increasing demand fo
Page 9 and 10: New Alfa Laval CM wireless conditio
Page 11 and 12: THE NEWS 9 Advanced water purificat
Page 13 and 14: THE NEWS 11 The local Masjid river
Page 15 and 16: THE NEWS 13 The Floodgate can be in
Page 17 and 18: 5 MINS WITH 15 DIGITAL TWINS: Bette
Page 19 and 20: 5 MINS WITH 17 Har Ghar Jal: Water
Page 21 and 22: IN THE FIELD 19 Mitigating capital
Page 23 and 24: IN THE FIELD 21 1.2 Organism Relati
Page 25 and 26: IN THE FIELD 23 Mr James U Thant Zi
Page 27 and 28: FOCUS 25 Photo by J K on Unsplash U
Page 29 and 30: FOCUS 27 Growing industrial busines
Page 31 and 32: FOCUS 29 Leaky pipes a thing of the
Page 33 and 34: FOCUS 31 learning curve has shorten
Page 35 and 36: FOCUS 33 Most prevalent potential i
Page 37 and 38: VIEWPOINT 35 URBAN FORESTS ASSIST S
Page 39 and 40: VIEWPOINT 37 What’s next for citi
Page 41 and 42: VIEWPOINT 39 Increased vigilance in
Page 43: VIEWPOINT 41 The time corresponds t
Page 47 and 48: VIEWPOINT 45 Sustainability in the
Page 49 and 50: HOTSEAT 47 VIEWPOINT 47 A matter of
Page 51 and 52: SWA/SgWX Water Utilities Series: Th
Page 53 and 54: SWA & Fluence Joint Webinar: Delive
Page 55 and 56: ON OUR RADAR 53 with IZAR radio mod
Page 57 and 58: ON OUR RADAR 55 even in harsh condi
Page 59 and 60: ON OUR RADAR 57 The lifting screw i
Page 61 and 62: ON OUR RADAR 59 Technical innovatio
Page 63 and 64: RECAP 61 To support business exchan
Page 65 and 66: EVENT CALENDAR 63 EVENTS 2021 JANUA
Page 68: For hydraulic mixing without headac

Water & Wastewater Asia January/February 2021

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