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IWWG training courses

Leading international experts will share their first-class knowledge during the three IWWG Training Courses scheduled on Sunday 1st October, prior to opening of the Symposium.
Courses are open to all Symposium participants and are suited to beginners. 
Attendance will be limited to 20 participants max. Registration will open soon.

WATER BALANCE SIMULATIONS OF LANDFILL COVER SYSTEMS - APPLICATION OF THE HELP MODEL | Oct. 1st, 2-6 pm
Dr. Klaus Berger, University of Hamburg, Institute of Soil Science, Germany

Klaus Berger studied computer science and geography with focus on physical geography and soil science at the University of Hamburg. He has worked as senior scientist at the Institute of Soil Science of the University of Hamburg for more than 25 years, focusing on soil hydrology, landfill cover systems, and the validation of hydrologic models. He is the developer of HELP-D, an enhanced version of the original DOS HELP from the USA.

The Hydrologic Evaluation of Landfill Performance (HELP) model is likely the most frequently applied model worldwide to calculate the water balance of cover and bottom liner systems for landfills. The training course is aimed at beginners and users with little knowledge of the HELP model; attendees should however have a basic knowledge of (soil) hydrology and landfill liner systems. The course will start with a lecture on the design and function of landfill cover and bottom liner systems, followed by an introduction into the HELP model with a focus on aspects required in use of the model. The lecture will focus on the history and current versions of the model, the basic concepts and hydrologic processes modelled, and major limitations of the model that should be taken into account in applications. Subsequently, the practical part of the course will feature use of the HELP model in specific design tasks for final cover systems. Integrated in an exercise with the current version HELP 3.95 D, we will walk through the user interface and input all necessary data to describe the weather, evapotranspiration parameters, and layer design of a cover system. Furthermore, a simulation will be started and the output data evaluated. The means of processing simulation results using a spreadsheet program will be demonstrated. Explanations on the meaning of input and output data will be given where necessary. Participants with a notebook (Windows 7 or above) can install HELP 3.95 D for the exercise (this is recommended), but will be asked to uninstall the program afterwards. Participants without a notebook will just follow the demonstration.

 

 

LEACHING ASSESSMENT USING LeachXS LITE | Oct. 1st, 2-4 pm
Dr. Hans van der Sloot & Dr. Andre van Zomeren, Energy research Centre of the Netherlands

Hans van der Sloot has retired from the Energy Research Centre of the Netherlands (ECN) and in January 2010 set up his own private consultancy. He has been involved in standardization of leaching tests for waste, soil and construction products at national and international level (CEN, ISO, US EPA). He is involved in several waste, construction and landfill related studies dealing with preparation of regulations. He is Associate editor for Waste Management. He is a board member of the International Waste Working Group (IWWG) and active in developing of and providing training in a decision support tool for environmental impact assessment (LeachXS) in cooperation with ECN, Vanderbilt University (Nashville, USA) and DHI (Hørsholm, Denmark).

 

André van Zomeren works at the Energy research Centre of the Netherlands as scientist in the Environmental Assessment group, focusing on the environmental risks associated with the (re)use of contaminated materials. André works on the chemical characterisation of the leaching behaviour and on the development of methods/technologies for quality improvement of a wide range of waste and (secondary) construction materials. He is also involved in the (horizontal) standardisation of (leaching) test methods in national and European standardisation bodies. He is member of CEN Technical Committees CEN/TC 351 (construction products) and CEN/TC 444 (waste) regarding the standardisation of leaching tests for construction products and waste materials, respectively. He also works on landfill projects aimed at developing completion criteria and to applying technologies to reduce the level of aftercare of landfills (sustainable landfilling). 

New leaching test methods have been finalized in Europe and the United States, which facilitate a more robust evaluation of the environmental safety of materials under beneficial conditions of use and disposal. These methods are expected to form the basis for the establishing of environmental compatibility requirements for materials and other emerging environmental regulations. LeachXS Lite provides a tool for use in managing and evaluating data from new leaching tests and historic tests for the characterisation and environmental impact assessment of (contaminated) soil, sludge, compost, sediments, various types of municipal, industrial and hazardous wastes, mining wastes, preserved wood, treated wastes, stabilised waste and construction materials based on contaminant release as derived from leaching tests (pH dependence, percolation, monolith leach test). LeachXS Pro-Orchestra includes models for geochemical modelling of test data and prediction/decision support tools. Aspects to be covered: Introduction to leaching, LeachXS Lite and use of new leaching tools, comparison of different leaching tests; statistical data evaluation and quality control options; compliance testing; comparison of laboratory, lysimeter and field data; data input tool, reporting functions. Geochemical speciation modelling of leaching test data and predictive modelling of release in different exposure scenarios will only be briefly addressed as available time is too short for an in-depth training. Time permitting an ad hoc LeachXS Pro training might be arranged during the conference. Requirements: Laptop with Windows operating system, Free use of LeachXS Lite.

 

LANDFILL LEACHATE TREATMENT | Oct. 1st, 4-6 pm
Howard Robinson, Phoenix Engineering, UK

Howard Robinson is Process Director of Phoenix Engineering and has nearly 30 years of specialised experience in landfill science, especially in the fields of landfill leachate characterisation and treatment. He has been responsible for many hundreds of leachate management projects, including the design of more than 70 full-scale leachate treatment plants, using a wide range of technologies. He has worked in the UK, Ireland, Hong Kong, Malaysia, New Zealand, South Africa, throughout Europe, and in the USA.

Landfill leachate remains a very important potential source of water pollution from landfill sites, and its management is critical if contamination of surface and groundwaters is to be avoided. This IWWG training course will begin with detailed explanation of the main contaminants present in leachates from landfills in many different countries, and will demonstrate that the composition of leachates at large landfills containing household wastes is remarkably similar throughout the world, and not greatly affected by climate or even socio-economic factors. The course will describe the various options available for successful on-site treatment of leachates, with many case studies, and detailed published papers will be provided on CD. The course tutor has been responsible for the design and commissioning of more than one hundred full-scale leachate treatment plants over the last 30 years, more than half of which make discharges of treated leachate into surface watercourses. The course will describe design and operation of typical on-site plants, which vary from simple aerated lagoons or reed beds, to very large treatment plants using innovative process designs to provide full nitrification and denitrification of 2500mg/l of ammoniacal-N. In Europe, increasing diversion of household wastes from landfill means that an increasing focus is on the management of leachates from closed landfills, meaning that fully automated plants are increasingly required, to minimize staff attendance requirements by use of remote access control schemes. However, in most developing countries, many very large new landfills continue to be designed and constructed in order to improve public health aspects of wastes management. The particular challenges involved in successful leachate management and treatment at these sites, often in tropical climates which experience intense rainfall events, will also be covered in detail. The training course will be run in an interactive manner, with lots of opportunity for discussion, and for specific aspects of particular interest to delegates to be covered.