THE MAGAZINE FOR THE DRAINAGE,WATER &WASTEWATER INDUSTRIES
the impact ofCovid-19 on water sanitation hygiene (WASH) services were also
presented.The organisations have mappedWASH activities in Latin America to look at what has changed since the pandemic took hold. It concludes that as governments’priorities shift to economic revival, access toWASH services risks getting lost in the discussions.
4) Infected passengersonplanes and cruise ships could be pinpointed CSIRO,Australia’s national science research agency, believes it has cost effective, rapid and accurate systemfor detecting the virus through wastewater-based epidemiology (WBE).TheWaterAction Platform webinar heard that researchers claim they can pinpoint infected passengers on planes and cruise ships, building on a proof of concept trial run in Brisbane by CSIRO and the University of Queensland. NewWBEresearch fromKWRWater Research Institute in the Netherlands, one of the first organisations to launch a sewage surveillance programme,was also presented. Graphs from29 July showa correlation with the number of registered cases with the Dutch Municipal Health Services and the number of hospital
admissions.The sewage water curve‘reacts’about aweek before hospital admission. This research again highlights that sewers can be used as an early warning system.
5) SouthAfrica launchesWBEprogramme Two sector experts fromtheWater ResearchCommission of South Africa, shared details of SouthAfrica’s recently launched national wastewater based epidemiology (WBE) programmeforCovid-19. Jay Bhagwan, executive manager and Dr Nonhlanhla Kalebalia, research manager, gave overviews of the programmeand the three-phrased approach it is taking to scale up the initiative across the country.
The first phase, a proof of concept, is already underway, to be followed by a large-scale pilot, which will be scaled up in phase three. Dr Clark said:“SouthAfrica already had aWBEand contact tracing programmein place to monitor other viruses, Ebola and polio. Perhaps their drought experience, coupled with pre-existence ofWBE programmes, helps explainwhy theCovid-19 case numbers stand at half a million in SouthAfrica but the deaths are only 8,000.”
6) Lowenergy freeze-dry technology could revolutionise sludge dewatering Anewtechnology that uses a freeze-drying process to dewater and dry sludges was presented during theWaterAction Platformwebinar’s technology showcase. Developed by Swedish company Elajo, the freeze dry unitworks with any sludge or slurrywith highwater content and is based on advanced temperature control. Elajo claims the process is energy efficient, operating at one-tenth of the usual energy consumption, and does not use chemicals. Dr Clark said:“There are alreadymany technologies for drying sludge to a higher dry solids content but these are typically high temperature processes that use a lot of
energy.The trick that Elajo uses is to incorporate a lowtemperature sludge freezing
stage.This frees the water trapped in the sludge solids,making it easier to evaporate in a subsequent high temperature
stage.The mechanism used to cool the sludge generates waste heat,muchlike your refrigerator does. In the freeze dry process, the waste heat is captured and reused in the later high temperate step, which is key to their energy efficiency. “This could potentially replace a number of processes typically deployed in awastewater treatmentworks.”
TAITRA offer opportunity to meet Taiwan InternationalWater week exhibitors online
Taiwan International Water Week (TIWW) and Circular Economy Taiwan 2020 will run from the 25th to 26th of September 2020 at the Taipei World Trade Center, Hall 1. As travel restrictions remain in place for visitors to Taiwan, TAITRA will hold online procurement meetings on Wednesday the 26th of September, allowing international buyers to connect with suppliers remotely. First held in 2019, TIWW allows Taiwan to showcase its innovative water technologies to the world and acts as a unique trading platform. Products supplied by the exhibitors include: • TIWW: ReclaimedWater and Treatment, Transport and Storage, Green Infrastructure,Water Purification Equipment and DrinkingWater, Process Control Technology and Process Automation.
• CE Taiwan: Eco-Tech, IAQ Equipment, Sludge Treatment and Recycling Equipment,Waste Treatment and Recycling Equipment, Environmental Protection Control Instruments, Total Solutions, Green Factories, Product-Service Integration Systems, New BusinessModels.
As part of its efforts to encourage business in the context of the pandemic, TAITRA hosted a livestream on TaiwanWater Treatment
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Solutions inMay.With over a thousand views on YouTube, the event featured presentations from the following companies, each introducing their latest solutions: • Aquas Inc. - Open Channel FlowMeter • Yuden-TechCo., Ltd. -Temperature&HumidityTransmitter • EnergyManagement SystemCo., Ltd. - SmartWaterMeters, Wireless Data Logger
• Ketech Scientific InstrumentCo., Ltd. - Analyzer, Photometer and Controller
• AccusensingTechnologyCo. Ltd. -Metals Analysis System • GintelTech Inc. - Cloud AIoTWater QualityMonitoring andTotal Solutions.
September 2020 | drain TRADER 55
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