Training in Managed Aquifer Recharge (MAR)
The aim of this technical training workshop is to provide attendees with an appreciation and practical understanding of the technical, scientific, engineering design, and regulatory issues that need to be addressed when contemplating managed aquifer recharge systems that utilise aquifer storage and recovery (MAR) boreholes or recharge basins.
This three-day course, inclusive of a half-day field excursion, will guide participants through the pre-requisites for, and technical feasibility of MAR systems for a variety of water sources, aquifer types, and end uses. The focus of the workshop will be on the key technical issues associated with planning, feasibility assessment, design, construction, operation and performance evaluation of recharge and recovery systems via boreholes and infiltration basins, two of the most common MAR methods applied worldwide. Policy issues and the relevant guidelines for MAR in Australia and South Africa will be presented. Case studies from South Africa and Australia will be used to illustrate the key technical issues, performance and scientific considerations that need to be employed to deliver successful, integrated, and sustainable MAR operations.
The workshop is aimed at Municipal water supply engineers / National & Provincial authorities /Water supply engineers / Project Engineers / Geohydrologists across all experience levels (Students, Basic, Intermediate or Advanced). Some prior knowledge of MAR techniques and terminology is useful but not essential to attend this course.
Failure of some MAR systems, can be attributed directly to the poor design of the recharge boreholes, or infiltration basins, but primarily due to the failure to adequately characterize the receiving aquifer, source and receiving water, poor engineering design of the boreholes or wellhead facilities, or miscommunication concerning the objectives of the MAR system. MAR boreholes are often quite different from conventional water supply boreholes requiring greater care in design and during construction. Successful and sustainable recharge via MAR systems requires a collaborative effort by scientists and engineers from across multiple disciplines.
The key points to be covered during this workshop include:
- Introduction to MAR and MAR methods
- Integrated Water Management and MAR
- MAR Policy and regulatory framework using examples from South Africa and Australia
- Economics of MAR
- Establishing a MAR Scheme Part 1 – Water quality and quantity considerations
a. Hydrogeochemistry for MAR
- Establishing a MAR scheme Part 2 – Technical considerations and applications
a. Borehole design
b. Aquifer characterisation
c. Clogging & Clogging management
d. Numerical modelling for MAR
- Establishing a MAR scheme Part 3 – Engineering considerations
- Risk Assessment and Management modelling
- Case studies including a training exercise and examples from Namibia
- MAR Operational Issues and their Management including lessons learned during the establishment of over 50 MAR systems.
- MAR resources (with a focus on resources developed for South Africa)
Participants will need to bring a laptop with Microsoft Excel.
The workshop format will consist of presentations on the specific topics supported by detailed case studies from Africa and Australia. Other international case studies will be used where relevant.
Attendees will be invited to discuss key issues and challenges that they are experiencing. Interactive hypothetical case studies forMAR borehole and wellhead facilities design will be utilized to stimulate discussion.