General National Id Slovenia_02 Summary The innovative ecoremediation (ERM) system, which consist in a sedimentation pond for the deposition of coarse particles and reduction of current flow velocity, for treatment of the polluted tributary of Glinščica, Slovenia, was installed in 2006 by Limnos Itd. Light or indepth? Light NUTS Code Zahodna Slovenija RBD code SI_RBD_1 Transboundary 0 Data provider REC Source(s) Case study: Ecoremediation System (ERM) for treatment of polluted tributary of Glinscica, Slovenia Run-off treatment of highly fluctuating waters with subsurface vegetated drainage ditch and river bed with meanders Vegetated ditches for treatment of surface water with highly fluctuating water regime NWRM(s) implemented in the case study Basins and ponds Longitude 14.45249 Latitude 46.0761 Site information Climate zone cool temperate moist Mean rainfall 1343 Mean rainfall unit mm/year Average temperature 9,69999980926514 Type Case Study Info Average slope range 0-1% Vegetation class Marsh vegetation Monitoring maintenance Monitoring impacts effects 1 Monitoring location In-Stream Monitoring parameters Hydro-morphological, physical and chemical, in addition to water and sediments' toxicity, reed productivity and ERM system's plant diversity. Monitoring upstream station The water level was measured at Inflow and at additional 6 sampling points in the VDD. Monitoring downstream station Outflow of the VDD and the outflow of the RBM Performance Performance impact estimation method Catchment outlet Performance impact estimation information pH, EC, DO and T were measured with portable meters WTW Multiline P4 according to Standard Methods. Hydraulic residence time (HRT) was measured with the tracer test with CaCl on 25.7.2007 and 26.7.2007. And statistical analyses. Design & implementations Application scale Field Scale Installation date 2006-01 Performance timescale < 1 year Size 225 Size unit m2 Inflow volume 260 Inflow volume unit m3/day Public consultation 1 Design contractual arrangement Arrangement type Responsibility Role Comments Name Design consultation activity Activity stage Key issues Name Comments Improved public acces Design land use change Land use change type Design authority Authority type Role Responsibility Name Comments Limnos ltd. Local water authority Financing MOL-Municipality of the Ljubljana Lessons, risks, implications... Key lessons The research showed regularly maintained ERM system efficiently decreased pollutants in the tributary of Glinščica and that combination of vegetated ditch and meandered stream for this purpose is an adequate and promising technology that can be further developed. Success factor(s) Success factor type Success factor role Comments Financing Financing type Comments Barrier Barrier type Barrier role Comments Driver Driver type Driver role Comments Financing share Financing share type Share Comments Policy, general governance and design targets Policy description Riparian development, pollution incident Policy target Target purpose Runoff control Pollutants Removal Improved Biodiversity Oher Societal Benefits Policy pressure Pressure directive Relevant pressure Policy area Policy area type Policy area focus Name Comments Policy impact Impact directive Relevant impact Policy wider plan Wider plan type Wider plan focus Name Comments Policy requirement directive Requirement directive Specification Socio-economic Costs capital information The cost was 100 Euro/m2 for investment Costs operation maintenance Operation is about 30-50 Euro/m2/year Ecosystem impact climate regulation Not relevant for the specific application Biophysical impacts Information on retained water 118.7 m3 Ecosystem erosion control 0 Information on Ecosystem erosion control Erosion increased Water quality overall improvements Positive impact-WQ improvement Information on Water quality overall improvements The results showed efficient removal of BOD5 (9%), organic N (24%), ammonia (7%), nitrites (84%), nitrates (68%), total N (40%) and total P (3%) in the entire ERM system in the third season. Vegetated ditch was efficient in removal of ammonia (38%), nitrites (91%) and nitrates (63%) and meandered stream was efficient in removal of total P (10%). With the exception of suspended and dissolved solids, pollutants concentrations at the end of the ERM system stayed within the permitted levels for outflow. The results showed the entire ERM system to be more efficient in removal of nitrites and ammonia in season 2008/2009 compared to previous year. Removal of sediments from the pond proved to be essential for efficiency of vegetated ditch, since the ditch reached higher efficiency for almost all parameters after maintenance work in the summer 2008 Water quality Improvements Phosphorus (P) 3 Water quality Improvements (P) unit % reduction pf pollutant Water quality Improvements Nitrogen (N) 40 Wq Improvements n unit % reduction pf pollutant Water quality Improvements (TSS) SS increased Soil quality overall soil improvements Negative impact-SQ deterioration Full Context Pathway(aka Context) Default view Area(aka Level or Site) ALL