2 nd International Conference Graz October, 10 th 2012 Effects on Groundwater by Mining Adaptation Topic 1 PP8 – LfULG (speaker: Corina Niemand) PP7 – IRRI PP2 – RWM (PP6 – IMGW)

LfULG - Areas of Work Transfer of knowledge and technology Support of policy Future topics Education Financial support Legal execution Environmental monitoring Research

Turow, Poland Ptolemaida, Greece Jänschwalde, Germany Ayrshire, Scotland fotocommunity.de :Hardy Ulitzka Where is know how existing ? Where will be the benefit? PP Mining Areas - Active Mining

Poland (turow, Gwra) Greece Radke, Peter (LMBV)

But: Way is long and difficult! QuantityQuality In which respect is it relevant to the donor partner(s)? Problems (Enormous) groundwater deficit Lusatian mining area 1990: around 13 billion m³ GW deficit groundwater lowering funnels about 2100 km 2 poor water quality of ground and surface waters low pH values – acid mine drainage high sulfate concentrations high concentrations of dissolved iron containing a high level of suspended solids and others

Adaptation Process: What is the role of the receiving partner(s) in the adaption process? Where were obstacles in the transfer of the selected methodology ? More time Table

Before mining mining After mining flooded by groundwater and surface water filled Groundwater – Quantity

Acid mine drainage

Mine water treatment plants Before mining mining What can be done? 1. Quantity 2. Quality

Oxidative mine water treatment Characteristics of the good practices What can be done?

Characteristics of the good practices Example: Mining Area Schleenhain, Germany

1. Quantity flooded by groundwater and surface water filled content/uploads/lmbv_ x300.jpg What can be done?

On site In lake Seewasser Mine water treatment plants Microbial ammonium reduction Electrochemical reduction of sulfate Stationary entry above and below the water surface Mobile entry above and below the water surface Improve sustainability by buffering with CO 2 and power plant ash runoff water In Situ dump and groundwater Microbial sulfate reduction by DSI Sulfate reduction with fixed-bed reactor Reduction of groundwater recharge seawater 2. Quality What can be done?

Inlake method to neutralize the lake water Characteristics of the good practices What can be done?

Inlake - Technologies reference LMBV Use of remediation ships: alkaline buffering by entry of HCO 3 generated on board in the surface water body (Inlake liming) Characteristics of the good practices

Basic research Applied research (laboratory / pilot plant test) Pilot test at the site Use in rehabilitation  passive / active techniques  geotechnical, chemical, physical, biological, microbial processes What exact steps were needed for a potentially successful transfer? What should be done?

well Infiltration well Substrat e Substrate concentratetd groundwater flow moraine clay Rehabilitation technologies – state of research What should be done?

„…Filling old mines with water must be…“ SHARP- Song Vers 3 Enormous water deficit  need to know the water balance in the region Project of PP7 and PP The end of the project SHARP is not the end of cooperation Transboundary catchment area Lusatian Neisse