Oct 23, 2018 @ 8:00 AM - Oct 24, 2018 @ 2:30 PM


Day One – Conference Programme – 23 October 2018

09h00 – 09h10Welcome and IntroductionGordon Borain
Session OneSludge management and status quo
09h10 - 09h35Status of Anaerobic Digestion in South AfricaGary Brown
09h35 - 10h00Sludge classification and management in South AfricaGolder and Associates
10h00 - 10h25Characterizing wastewater sludge for Agricultural benefitsDr Eyob Tesfamariam, University of Pretoria
10:25 – 10h50Emerging sludge mgt. technologies as pathways of transitioning to the Circular EconomyDr John Ngoni Zvimba, Water Research Commission
10h50 - 11h20TEA BREAK
Session TwoDigester Performance
11h20 - 11h45Global trends in anaerobic digestion of bio-solidsCAMBI
11h45 - 12h10Pre-treatment of wastewater sludge; Cell LysisJan Talkenberger
12h10 - 12h35Thermophilic digestion of wastewater sludgeMax Grau
12h35 - 13h00Modelling AD for improved performanceDr David Ikumi, University of Cape Town
13h00 - 14h00LUNCH
Session TwoBeneficial value of sludge
14h00 - 14h25Nutrient recovery potential from sludgeJason Gifford
14h25 - 14h50Biogas production for electricity generation in South AfricaKarl Juncker
14h50 - 15h15Beneficial utilization of bio-solids as a source of nutrients and carbon in agricultureFrancois Burger - Agriman
15h15 - 15h30TEA BREAK

Day Two – Conference Programme – 24 October 2018

08h00 - 08h30TEAAll
Sludge management and status quo
08h30 - 09h50Recap of Day 1John Zvimba
08h50 - 09h15Sludge disposal practices overviewMegan Schalkwyk
09h15 - 09h40Waste Act: Sludge classification for disposal – DEAMishelle Govender
09h40 - 10h05eThekwini case studyLusapho Tshangela
10h05 - 10h30City of Cape Town sludge handlingWerner Rossle
10h30 - 11h00TEA BREAK
11h00 - 11h30Dry Sanitation Sludge Handling, OverviewUKZN, PRG
13h00 - 14h00LUNCH BREAK
14h00 - 14h20CLOSUREMlu Mnguni


The WISA Anaerobic Sludge Processes Divisions in partnership with the WISA KZN Branch are hosting the Sludge to Resource Symposium at the Durban Botanic Gardens from 23-24 October 2018.

Potable water and wastewater treatment sludge management and disposal has quickly become a problem for most municipalities and water boards. Most treatment plants were (and are still being) designed to prioritise the treatment of the liquid stream over the solid stream. Sludge management is often represented by a single arrow labelled ‘to disposal’. While this approach has worked in the past; the current environmental legislation has brought about more stringent disposal limits. This has made compliance with sludge discharge standards neither financially nor environmentally sustainable. An improved approach that prioritises all streams produced in potable water and wastewater treatment plants is thus needed. This will make use of the currently available innovations to ensure that sludge is managed as a resource rather than a waste product. The aim is to apply the cleaner production approach which recovers all useful resources contained in sludge and only discharge reduced volumes (if at all). The nutrients load and energy potential contained in sludge makes this approach possible.

The symposium will bring together key stakeholders in the South African water sector with an intention to discuss and address challenges including exploring opportunities around sustainable sludge management with a view of turning sludge into a resource. Recent developments in treatment technologies, sludge treatment and volume reduction, resource (biogas, nutrients, water) recovery will also be discussed. The symposium will further explore discussions aimed at lobbying for more lenient sludge regulations. We would therefore like to invite all stakeholders within the water and wastewater sector, water and wastewater engineers and technicians, plant managers, municipal managers, researchers, water boards, consultants, process controllers and regulators to join us at this exciting event.

The delegate fees are as follows:
• WISA Members - R2,300.00
• Non-WISA Members - R3,220.00

Should you wish to attend please complete the online registration by clicking on the button below.

Register online!



23 Oct 2018 @ 8:00 AM
24 Oct 2018 @ 2:30 PM
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Mluleki Mnguni
Mluleki Mnguni


Durban Botanic Gardens
9A John Zikhali Road, Musgrave Durban, Kwa-Zulu Natal 4001 South Africa + Google Map