Christian Severin International Waters - GEF
Wetland classification Overview of projects in the Black Sea Danube region Nutrient reduction Economics
Classification of wetlands Natural wetlands (swamps, marshes and similar areas along edges of water bodies) Rehabilitated Wetlands (pulling out dikes, redirecting streams and rivers, diversifying intensive agricultural practices) Constructed Wetlands (A modified natural or constructed shallow basin for treatment of contaminated waters by wetland vegetation)
Examples on different types of actions CountryProject NameType of action (among others) Albania/ Macedonia (UNDP) Integrated Ecosystem Management in the Prespa Lakes Basin of Albania, FYR-Macedonia and Greece Construction of SFS/FWS systems Bosnia-Herzegovina (WB) Water Quality Protection ProjectCombination of constructed SFS, FWS and Natural wetland systems Bulgaria (WB)Wetland Restoration and Pollution Reduction ProjectRehabilitation of Natural Wetlands
Nutrient Reduction in the Danube and Black Sea Basin TrancheProject titleStatusGEF $ 1 Romania: Agricultural Pollution ControlApproved Bulgaria : Wetland Restoration and Pollution ReductionApproved Moldova: Agricultural Pollution ControlApproved4.95 1/2 Turkey: Anatolia Watershed RehabilitationApproved Serbia and Montenegro: Reduction of Enterprise Nutrient DischargesApproved9.02 2/3 Bosnia-Herzegovina : Water Quality ProtectionApproved Hungary: Reduction of Nutrient DischargesApproved Moldova: Wastewater, Environmental InfrastructureApproved Romania: Integrated Nutrient Pollution ControlApproved Croatia: Agricultural Pollution ControlPending Ukraine: Odessa Wastewater TreatmentPending5.00
Wetlands for Nutrient Reduction Construction of Wetlands to clean wastewater (Artificially created wetland with optimized functions for cleaning specific types of wastewater) Using natural wetlands to clean wastewater (Discharging directly into Wetlands, little alteration in the natural dynamics, not able to target specific types of wastewater, mainly used for tertiary treatment)
Constructed Wetlands Horizontal Flow System Vertical Flow System
Wastewater Sources Natural agricultural run-off (Fields, etc) Agricultural manure, sludge Domestic wastewater Complex wastewater from sources such as: Slaughter houses Dairies Printing houses Flower production Oil Exploration water Tanneries
Nutrient reduction: Wetlands contra Conventional Free Water Syst.Subsurface Water Syst.Conventional Efficiency BODGood (80%)Good (70-80%)Very Good (≥90%) SSGood (80%)Very good (80-90%)Very Good (≥90%) NMediocre (65-70%)Mediocre (70%)Very Good (≥90%) PLimited (50%) Very Good (≥90%) ColiFormVery Good (≥90%) Chemical/Biological efficiency of Wetlands
Social/Cultural aspects Free Water Syst.Subsurface Water Syst.Conventional Area needed per PEHigh 2 m 2 – 15 m 2 High m 2 Is a minor issue Animal infestation riskhighMediumlow Odor nuisanceshighLow Mosquito breedingHighLow Cold climate stabilityMediocreHigh Inclusion of the publicCrucial Important Wetlands contra Conventional
Political and financial Aspects Free Water Syst.Subsurface Water Syst.Conventional OM skills neededLow high Investment indexed Operation US$ (1998) Depreciation of invest.20 yr 12 yr
The Political/Economical/Social importance of Wetlands Local (Water security, Food, money generation, health) National (Impact on national water ways, health, political stability) Regional - e.g. Lake Vic, Black Sea (social, economical and political stability) International (Strategic importance for Politicians, WB, UNDP, GEF etc.)