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


Day One – Conference Programme – 23 October 2018

07h30 – 09h00 REGISTRATION AND TEA All
09h00 – 09h10 Welcome and Introduction Gordon Borain
Session One Sludge management and status quo
09h10 - 09h35 Status of Anaerobic Digestion in South Africa Gary Brown
09h35 - 10h00 Sludge classification and management in South Africa Golder and Associates
10h00 - 10h25 Characterizing wastewater sludge for Agricultural benefits Dr Eyob Tesfamariam, University of Pretoria
10:25 – 10h50 Emerging sludge mgt. technologies as pathways of transitioning to the Circular Economy Dr John Ngoni Zvimba, Water Research Commission
10h50 - 11h20 TEA BREAK
Session Two Digester Performance
11h20 - 11h45 Global trends in anaerobic digestion of bio-solids CAMBI
11h45 - 12h10 Pre-treatment of wastewater sludge; Cell Lysis Jan Talkenberger
12h10 - 12h35 Thermophilic digestion of wastewater sludge Max Grau
12h35 - 13h00 Modelling AD for improved performance Dr David Ikumi, University of Cape Town
13h00 - 14h00 LUNCH
Session Two Beneficial value of sludge
14h00 - 14h25 Nutrient recovery potential from sludge Jason Gifford
14h25 - 14h50 Biogas production for electricity generation in South Africa Karl Juncker
14h50 - 15h15 Beneficial utilization of bio-solids as a source of nutrients and carbon in agriculture Francois Burger - Agriman
15h15 - 15h30 TEA BREAK
15h30 - 17h00 PANEL DISCUSSION

Day Two – Conference Programme – 24 October 2018

08h00 - 08h30 TEA All
Sludge management and status quo
08h30 - 09h50 Recap of Day 1 John Zvimba
08h50 - 09h15 Sludge disposal practices overview Megan Schalkwyk
09h15 - 09h40 Waste Act: Sludge classification for disposal – DEA Mishelle Govender
09h40 - 10h05 eThekwini case study Lusapho Tshangela
10h05 - 10h30 City of Cape Town sludge handling Werner Rossle
10h30 - 11h00 TEA BREAK
11h00 - 11h30 Dry Sanitation Sludge Handling, Overview UKZN, PRG
11h30 - 13h00 PANEL DISCUSSION
13h00 - 14h00 LUNCH BREAK
14h00 - 14h20 CLOSURE Mlu 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
Event Categories:
Event Tags:
, ,


Mluleki Mnguni
Mluleki Mnguni


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