Joint Project IWRM DaMe: Bi-regional IWRM dialogue and multi-local partnerships for small-scale water supply and reuse in Danube and Mekong sub-basins; sub-project: Comparison of river basins and investigation of transfer potentials & implementation options and overall coordination

Abstract

The objective of the project was to initiate a bi-regional IWRM1-dialogue between two selected river catchment areas, the Danube in Bulgaria and the Mekong in Vietnam to explore which solutions for the implementation of IWRM can be developed and utilized here or (hopefully) replicated elsewhere. Project partners were IEEM (GER, coordinator), Sofia Univ. (BUL) with delphin P. E. Ltd (BUL), VNU-HUS (VNM), associated the Univ. NUOL (Laos) and as IEEM-twinning partner Martin Systems (wilo, GER). The work activities began with the selection of target pilot locations, included the collection of IWRMrelevant institutional and hydrological data and the comparison Danube versus Mekong, the research of selected technology-based solutions for rural water supply and reuse as IWRM measures under multi local partnership and Workshops in the partner countries. Project results respectively findings and lessons learned are

IWRM regulation is complex and a bureaucratic burden on the water utilities with little use for IWRM implementation. The bottleneck of success regarding IWRM implementation is rather a lack of enforcement than a lack of regulation in water management. The implementation of small water works as off-grid solution with MFDWS (multi-fed dual water supply) technology is possible and economically reasonable in many IWRM regions worldwide. Technologies with ion exchange or nano filtration, preferably in combination with different IWRM measures, is replicable for other water supply plants with the similar water contamination. Combined technologies with chemical and physical stages for water reuse can work. Further research at a higher TRL is needed to verify, whether this can be implemented in practice. Three best practice guides (BPG) are elaborated for the three different pilot solutions by each partner. The BPG specified for the IEEM solution is provided as well as the general Laymen’s report. Datei-Upload durch TIB