Rainwater Harvesting Methods for Slope and Desert Areas in Vietnam

RAINWATER HARVESTING FOR SLOPE AND DESERT AREA IN VIETNAM By Vu Dinh Xiem VIETNAM INSTITUTE FOR WATER AND INVIRONMENT (IWE)

General view and purpose ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The research areas ,[object Object],[object Object],[object Object],[object Object]

Traditional method of rainwater harvesting (RWH) in VN ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Methodology ,[object Object],[object Object],WATER HARVESTING Surface WH (from stream) RWH At the surface of ground With physical work (run in to tank, pond, reservoir) With physical work W/O physical work Agricultural cultivation Agricultural cultivation At the roof and tree Drinking water W/O physical work (run in to the ground) Agricultural cultivation Drinking water Drinking water With physical work Source for harvesting By kind storage By purpose of use

With Physical work: ,[object Object],[object Object],[object Object],[object Object],[object Object]

Method ology for design calculation for RWH system ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Z: Chiều sâu hiệu quả tầng rễ Aquifer with root depth

Method ology for design calculation for RWH system (cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A V M

Basic data for RWH system design ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Rainwater harvesting for slope area (in the mountainous area, north Viet Nam Harvesting Storing Irrigating Cross section Plan ,[object Object],[object Object],[object Object],[object Object],[object Object],1 3 Slope 2 4 5

Rainwater harvesting for desert area (in south-middle Viet Nam with annual rainfall is 500-700mm) HDPE 0.3mm for RWH catchment Pipe system Pond Fruit - tree crop Neem tree for wind barricade Fruit tree Neem tree for wind barricade

Material selection and structural calculation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Basic design for tank by materials

Basic design for pond and catchment Catchment and pond Gutter B b d m=1-1,5 m=1 m=1 h i

Pilot project: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Result of model Efficiency coefficient of RWH system vs 10days rainfall

Result of model ,[object Object],[object Object],[object Object],[object Object]

Result of model ,[object Object],[object Object]

Result of model ,[object Object],[object Object],[object Object],[object Object],[object Object]

Pilot project (cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Planning for 4 ha Neem tree Trôm tree RWH system

Result ,[object Object],[object Object]

Result ,[object Object],[object Object],[object Object]

Some other projects applying this technology in VN ,[object Object],[object Object],[object Object]

Rainwater Harvesting Methods for Slope and Desert Areas in Vietnam

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Rainwater Harvesting Methods for Slope and Desert Areas in Vietnam