e-WISA
e-WISA
Water Institute of Southern Africa
www.waterinfo.co.za - www.ewisa.co.za - www.waterinformation.co.za - www.ewater.co.za
CURRICULUM VITAE (CV) OF SPECIALISTS IN THE WATER SECTOR
WISA MEMBER
Name & Surname
Jeremia Jesaja (Mias) VAN DER WALT
Nationality
South African
Company
Current position
Qualifications
Bigen Africa Services (Pty) Ltd
Projects Associate
B Eng, Mechanical Engineering (Potchefstroom University, 1988)
M Eng, Mechanical Engineering (cum laude) (Potchefstroom University, 1995)
D Eng, Civil Engineering (Rand Afrikaans University, 2002)
Speciality fields
Wastewater treatment
Mine water
Water treatment
Water supply & reticulation
Sewerage reticulation
Professional
membership
Career
X
Industrial effluent
Water quality
Dam Safety
Hydrology & groundwater
Ocean outfalls
Catchment management
Engineering Council of South Africa
American Water Works Association
Water Institute of South Africa
1.
BIGEN AFRICA CONSULTING ENGINEERS (Pty) Ltd
1.1
Projects Associate
2.
MAGALIES WATER
2.1
Maintenance Engineer
Manager Bulk Services and Research
Area Manager
Vaalkop WTW and supply area
General Manager – Water Services
(April 2007 to date)
(1995 – 1996)
(1997 – 2003)
(2003 – 2006)
(2006 – 2007)
Key responsibilities
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Manage all aspects of planning, operation, maintenance, general
administration, personnel, laboratory, finance and research in the
30 000 km2 Magalies Water area of supply including the following.
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The Vaalkop WTW comprise a 210 Ml/d treatment facility,
pumping capacity of 10 MW, a 500 km bulk distribution
network
The Rustenburg STW (42 Ml/d)
The Boitekong STW (8 Ml/d)
The Bospoort WTW (12 Ml/d)
The Roodeplaat WTW (60 Ml/d)
The Temba WTW (60 Ml/d)
The Klipdrift WTW (18 Ml/d)
The Wallmannsthal WTW (12 Ml/d)
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The Cullinan WTW (14 Ml/d)
Retail management in the Temba area
Management of assets worth approximately R 1 Billion Rand and a
staff complement of about 200.
Compiling and controlling operating budgets of R 250 M per annum.
Preparation infrastructure capital budgets.
Treatment plant operation and optimisation.
Maintenance planning and implementation.
Bulk distribution planning and control.
Participation on various Water Research Commission projects.
Planning and implementation of refurbishment of ageing
infrastructure.
Strategic planning.
Projects
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Development and Implementation of an asset management system
(from ‘scratch’). The system was initially developed in the Vaalkop
area and is currently being implemented in all the other Magalies
Water operation areas as well.
Setting up of a water quality laboratory at Vaalkop WTW and later for
all the other water and sewage treatment works.
Refurbishment, operation and management of a 200 km neglected
pipeline system in the former Bophuthatswana areas.
Water loss control (design, implementation and management) of
network in excess of 500 km.
Development of IT systems for asset management, maintenance
management, management information, water loss control, budgetary
control and stores inventory.
Hydraulic modelling of supply networks.
Development and maintenance of a GIS system.
Development and implementation of a dynamic strategic planning tool
to assess new extensions to the supply system. (Currently being
revised with latest software).
Automation of new and existing treatment plants and pump stations.
Implementation of a new SCADA system.
Retrofitting and expanding telemetry systems covering an area of
10 000 km2. (Currently being refurbished with latest technology).
Plan technical aspects of expansions to bulk infrastructure such as
treatment plants, pipelines, pump stations and reservoirs for future
demand.
Restructuring of the Vaalkop WTW workforce to function more
effectively. Served as member and chairman of various transformation
task teams dealing with integration of parts of NWWSA and Magalies
Water.
Initiation of an Adult Basic Education and other training programs.
Implementation of Occupational Health and Safety and Environmental
Management and the establishment of a SHE department.
Responsible for directing the design, construction, commissioning and
operation of the Vaalkop Southern Supply Scheme which included the
construction of 80 km of pipelines, 93 Ml clean water storage tanks,
85 Ml/d pump station and a purification plant of 90 Ml/d. The plant is
highly automated featuring a state of the art SCADA system,
specialized treatment processes, and required a multidisciplinary
team effort. The treatment plant received the SAICE award for civil
engineering excellence. The project value was R 250 M.
Responsible for directing the design, construction, commissioning and
eWISA is a WISA initiative to improve the skills of all South Africans working in the water sector.
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operation of a 12 Ml/d supply system to BRPM mine including 40 km
pipelines, 12 Ml reservoir (R 70 M).
Implementation of a fuzzy logic pump control system.
Responsible for setting up a catchment management monitoring team
in the Elands and Hex rivers.
Motivation, design and construction of the new 85 Ml/d Vaalkop pump
station (R 45 M).
Motivation, design and refurbishment of an old 30 Ml/d advanced
process water treatment plant including DAF, Ozone and GAC.
(R 60 M).
Motivation, design and refurbishment of an old 550 mm steel pipeline.
(R 22 M).
Completion of Doctoral studies (part time) on the application of CFD
to improve design and operation of water treatment process tanks.
Responsible for all technical and agreement aspects relating to the
Rustenburg Water Services Trust. All aspects of operations,
maintenance and quality control of Rustenburg and Boitekong STW.
(2004).
Implementation of an ISO 14000 system at the Vaalkop WTW.
Assisting Thabazimbi with hydro-geological surveys and planning for
water supply system to Rooiberg.
Motivation and implementation of asset management improvement
plan at Vaalkop WTW. (2004 – 2006).
Implementation of a complete new management system (including an
asset management improvement system) for the Rustenburg Water
Services Trust. This included a new laboratory, the Rustenburg STW,
Boitekong STW and Bospoort WTW. (2004-2007).
Implementation of an asset management improvement plan for the
Magalies Water operational areas (other than Vaalkop). (2006 – to
date).
Development and implementation of a standardized water supply
performance reporting system for all Magalies Water operational
areas. (2006 – to date).
Assisting various Municipalities with the operation and maintenance of
water infrastructure assets and water quality control.
Specialists Reports & Projects
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Numerical modelling of sedimentation tanks at Vaalkop WTW, a
report prepared for GFJ/Magalies Water.
The modelling of the Langerand Reservoir, a report prepared for Rand
Water.
The modelling of the Wildebeestfontein Reservoir, a report prepared
for Rand Water.
The modelling of Daleside Reservoir, a report prepared for Otto
Langenegger and Partners.
The modelling of the Welbedacht WTW Pre Sedimentation tank, a
report prepared for Otto Langenegger and Partners.
CFD modelling of a chlorine tank at Balkfontein WTW, a report
prepared for PDNA.
CFD modelling of 90 degree bends, a report prepared for Sulzer SA.
CFD modelling of a pump suction arrangement, Suzler SA.
CFD modelling of ozone contact tanks, The CFD modelling of a
sedimentation tank at Zuikerbosch, a report prepared for PDNA.
The CFD modelling of a Bitumen filter, a report prepared for Rand
Water.
The CFD modelling of a sedimentation tank at Zuikerbosch, a report
prepared for Rand Water.
eWISA is a WISA initiative to improve the skills of all South Africans working in the water sector.
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The modelling of a cyclone separator, a report prepared for Rand
Water.
The modelling of a Candy type sedimentation tank
The wide range of experience enables me to approach challenges in a more
holistic manner with due consideration to a wide variety of influences. My
fields of experience include:
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Research
Modelling of pipe networks and process tanks
Operational control and optimisation
Hands on experience in all aspects of maintenance including
mechanical, electrical (HV and LV), instrumentation, PLCs and
SCADA
Water treatment design and operation
Asset management planning and implementation of water treatment
and distribution infrastructure
Infrastructure planning and development
Strategic planning
Refurbishment of infrastructure
Contract administration
Capital and operational budgeting and financial control
IT systems and process control
Personnel administration and recruitment
Environmental management
Occupational Health and Safety Management
3.
RAND WATER (July 1990- February 1995)
3.1
Mechanical Engineer (August 1990 – July 1992)
Department of Chief Mechanical Engineer
Key responsibilities
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Feasibility studies, preliminary and detail design
Tender documentation preparation
Adjudication of tenders
Multidisciplinary project management
Plant commissioning
Projects
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3.2
Ventilation of lime kiln air blower house.
Lime kiln venturi scrubber refurbishment.
Distribution and dosing of carbon dioxide for pH control.
Standby liquid carbon dioxide system .
Various investigations into the improved operation of the Zuikerbosch
lime kilns.
Process Engineer (August 1992 – February 1995)
Department of Chief Process Engineer
Key responsibilities
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Research and development.
eWISA is a WISA initiative to improve the skills of all South Africans working in the water sector.
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Feasibility studies, preliminary and detail design.
Tender documentation preparation.
Adjudication of tenders.
Multidisciplinary project management.
Plant commissioning.
Supervision of junior engineers, draftsmen and contractors.
Projects
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The design and installation of a chlorine and ammonia dosing plant at
Mapleton pump station.
The design and installation of a chlorine and ammonia dosing plant at
Zwartkopjes pump station.
Design of a lime dosing system for a waste water recovery plant.
Design, installation and testing of 10 Ml/d lime recovery pellet bed
reactor.
Design of 200 Ml/d lime recovery pellet bed reactor (at that stage the
largest in the world).
Refurbishment of a PLC controlled lime slaking, distribution and a
dosing system for a 1200 Ml/d treatment plant.
Design of lime supply, transportation, slaking and dosing system for a
1000 Ml/d treatment plant.
Design of a filter wash water recovery plant.
Completion of Masters degree in Engineering (part time) with a thesis
investigating the modelling of sedimentation tanks and thickeners.
SA NAVY (January 1989-June 1990)
Sub-Lieutenant.
Key responsibilities
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Analysis of structural (metallic) failures
Corrosion protection monitoring
Chemical analysis of oils & cooling water
Sub-marine air conditioning
General technical advice
Professional
experience (short
description)
Publications
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Numerical simulation of two-phase flow in a sedimentation tank (1996) JJ van
der Walt & C G du Toit, 1st South African conference on applied mechanics,
Midrand, South Africa.
The application of CFD in the calculation of local G-values in a hydraulic
flocculator (1998) J J van der Walt, WISA Conference, Cape Town, South
Africa.
Is a sedimentation tank really that simple? (1998) JJ van der Walt, WISA
Conference, Cape Town, South Africa.
Lecture for SAICE Johannesburg branch (1998) JJ van der Walt & J Haarhoff,
CFD and its application in water treatment.
A GIS based dynamic strategic planning system (1999) JJ van der Walt & EH
Johnson, Water Industry System, Exeter, UK
eWISA is a WISA initiative to improve the skills of all South Africans working in the water sector.
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Performance Indicators for water storage tanks (1999) J J van der Walt & J
Haarhoff, Water Industry Systems, Exeter, UK
Stochastic analysis of rural water supply systems (1999) J Haarhoff, K van Zyl,
& J J van der Walt, IWSA World Water Conference, Buenos Aires, Argentina
Reflecting on CFD efforts in the water industry (2000) J J van der Walt, IWSA
Workshop on modelling, Delft, The Netherlands
Sludge and washwater management strategies for the Vaalkop water treatment
plant (2000) J Haarhoff, P van Heerden & J J van der Walt, Managing water
and waste in the new millennium, Midrand, South Africa
Is a reservoir really that simple? (2000) J J van der Walt & J Haarhoff, WISA
Conference, Sun City, South Africa
To baffle or not to baffle – some baffled solutions (2000) J J van der Walt,
WISA Conference, Sun City, South Africa
The integration of GIS and hydraulic network analysis (2000) J J van der Walt &
E H Johnson, WISA Conference, Sun City, South Africa
Is CFD an engineering tool or toy (2000) J J van der Walt & J Haarhoff, WISA
Conference, Sun City, South Africa
Meeting the unique management and operational challenges of a larger bulk
rural water supply system (2000) J J van der Walt, L B van Genderen & J H
Oppel, WISA Conference, Sun City, South Africa
Towards the optimal design of around the end flocculators (2001) J Haarhoff &
J J van der Walt, Journal Water Science Technology: Research - Aqua, 30(5).
Is sustainable service delivery a reality, (2001) J J van der Walt & D Montoedi,
IMESA conference, Rustenburg, South Africa
Is a chlorine contact tank really that simple, (2002), J J van der Walt, WISA
Conference, Durban, South Africa.
Fuzzy logic production control – the Vaalkop case study, (2002), J J van der
Walt, J Smith & M C Nel, WISA Conference, Durban, South Africa.
The modelling of water treatment process tanks, (2002), J J van der Walt, D.
Eng. Thesis, Rand Afrikaans University, South Africa.
Small water systems, technology & philosophy – an exploration into a feasible
synergy, (2004) J J van der Walt, 6th Specialist Conference on Small Water &
Wastewater systems, Fremantle, Western Australia
Turning the sewage turn – a good new case study for the Hex river, (2006) JJ
van der Walt et al. WISA 2006, South Africa
Playing catch-up with catchment water quality – The Vaalkop plant upgrade
case study. (2006) JJ van der Walt, CJ van der Walt & AD Ceronio. WISA
2006, South Africa
Asset Management and essential key to improved wastewater management,
(2006), JJ van der Walt, Wastewater Management, water and sanitation
conference, Institute for International Research, Midrand, South Africa
Small is beautiful, (2006), JJ van der Walt, WISA - Appropriate technologies
conference, Durban, South Africa
Adapt or die – New life for two old water treatment works, (2006) JJ van der
Walt, CJ van der Walt, AD Ceronio, and C Marx, IMESA 2006, South Africa
eWISA is a WISA initiative to improve the skills of all South Africans working in the water sector.