Overall objective

Development of a sustainable drainage concept based on the existing master plan for the Long Bien district and its integration into existing local water cycle with following aims (in respect to): supporting further urban development, flood avoidance and minimisation, and improvement of the quality of surface and groundwater.

Specific objectives

• Proposing a sustainable drainage concept adapted to local requirements and circumstances mainly based on new innovative ideas
• Conceptual design of a safe sanitary sewage system consisting of network, pumping stations and treatment facilities for domestic sewage and for the pre-treatment of industrial wastewater
• Optimisation of the number and location of the treatment plants needed by cost benefit analysis
• Conceptual development of a sustainable rainwater drainage system consisting of network, infiltration ponds, canals, open ditches, pumping stations etc.
• Analysing methods for artificial groundwater replenishment to overcome problems related to lowering of the groundwater level due to overexploitation of groundwater
• Methods for an environmentally sound sludge treatment and reuse
• Documentation of the results achieved in a handbook describing the conceptual design and supplemented by specific examples of existing solutions
• Human capacity building in the fields of management/maintenance of sewage systems and groundwater replenishment
• Development of guidelines for wastewater manage-ment with transferability to similar regions from Vietnam and other South-East Asian countries