Mechanistic understanding of multiple beneficial aspects of iron-salts & iron-rich waterworks sludge uses in integrated urban wastewater system – Lessons learned from lab-scale, pilot, & field studies Dr. Sohan Shrestha completed his PhD in 2020 from Advanced Water Management Centre (AWMC), School of Chemical Engineering, The University of Queensland (UQ), Brisbane, Australia. Currently, he works as researcher & water treatment operator for Arris Water Pty Ltd.
Hosted by Board Member Ben Kele
JOIN US via Zoom: Monday June 28th – 4-5.30PM PT (7-8.30PM EST) 9-10.30 AM TUESDAY June 29th. AEST
There has been growing interest in integrated iron(Fe)-salts or waterworks Fe-rich sludge uses for system-wide operation, aiming to reduce the overall chemical footprint of urban water utilities.
The multiple beneficial uses of iron (either in the form of iron-salt or iron-rich sludge) in sewer system and downstream wastewater treatment plant in an integrated manner have found to achieve sulfide removal in sewers (decreasing sewer odour and corrosion), phosphorus (P) removal during wastewater treatment, hydrogen sulfide (H2S) removal during digester biogas generation, including improving the sludge settleability and dewaterability during wastewater treatment processes.
When adopting such integrated strategy of in-sewer iron-dosing, iron is reused four times during transit through the treatment chain of urban wastewater system thereby substantially reducing chemical usages.
The project outcomes identified clear opportunities for water and wastewater utilities to collaborate, and share the benefits, providing water/wastewater services in a cost-effective manner albeit with improved environmental sustainability.
The current presentation will primarily shed light on the underlying mechanism behind some key beneficial aspects when implementing iron-dosing in integrated sewer-wastewater treatment plant.
Model. Monitor. Map. Maintain. Manage. Tools for crunching numbers: For communities of any size.
This 8 week Symposium is an opportunity to learn from the best how to make wise, affordable and sustainable wastewater decisions for your community. All events can be attended live or viewed later as an on-demand recording.
To view the individual sessions or register for all 8 go to
WasteWater Education 501(c)3 came to the close of our FY2019-20 with a healthy balance and increased participation – in both distance learning online/on demand CEU classes and WWETT sponsored public education events! Look for the publication of our Annual Report here shortly.
It is with a heavy heart we acknowledge the demand for our distance learning expertise has come at a sad cost and for the saddest of reasons – Covid19. We are honored to help but wish it wasn’t for this reason.
WasteWater Education recently renewed the 2 year contract for our long serving Executive Director Dendra Best. Our official mailing address and company contact is still in Michigan but Dendra has now relocated to just outside Hilo, HI.
June 8, 1909: John L. Leal, George W. Fuller and George A. Johnson present papers at the AWWA annual conference on this day in Milwaukee, Wisconsin, on the chloride of lime treatment system at Boonton Reservoir, New Jersey. Unlike previous presentations on the addition of disinfection chemicals to water, the three papers were received enthusiastically […]