Most ashes, slug and other by-products in TEŠ are
processed, producing the RDP product which is also referred to as a stabilised
side-product, used in the rehabilitation of collapsed areas of the Velenje coal
mine predominantly in the area between the Velenje and Družmir lakes where
different monitoring and supervision of building works are carried out. The
area where the stabilised side-products is deposited is evenly collapsed and
has no visible broken off parts and thus provides material of a satisfactory
quality. No movements (avalanches, slumps) have been noticed in the area of
embankments. Procedures and adjustments of embankments are performed in rehabilitation
area of collapsed formations in order to reduce the amount of water, meaning the
reduction in the amount of sulphates in Lake Velenje in the long term. Parts of
the area where the stabilised side-product is currently not deposited are
simultaneously greened. Dusting in the active part of the rehabilitation area
of collapsed formations is prevented through prompt sprinkling or irrigation
systems.
TEŠ monitors all elements of the environment within the framework of Ecological
Monitoring (EKO-MON), which has been implemented by the Institute for
Ecological Research ERICo Velenje, since 1996: air (dust deposits, aerosoles9,
water (water of closed circuit – ZKV, water and groundwater from the
rehabilitation area of collapsed formations and their surroundings, Lake
Velenje with effluent and natural tributaries the Lepena, Sopota and Paka Rivers
in front of the effluent from the lake and behind it), ground and combustion
products, food and fodder. Physical-chemical parameters and content of metals and ions are determined
in environmental elements, pedological and biological analyses carried out and
the technological increase in natural radioactivity in the environment due to
deposited combustion products and purification of flue gases in the
rehabilitation area of collapsed formations ascertained. Precipitation and
evaporation are ascertained daily in order to monitor water balance in the area
of the rehabilitation of collapsed formations.