18-05-2012, 11:20 AM
BASICS OF RAIN WATER HARVESTING
Rain water harvesting.ppt (Size: 5.01 MB / Downloads: 96)
RAIN WATER HARVESTING TECHNIQUES
1. Storage of rain water on surface for future use.
2. Recharge to ground water.
Recharge pits
Recharge trenches
Recharge shaft
Trench with recharge well
Shaft with recharge well
Recharge through abandoned hand pumps
Recharge through abandoned tube well
Recharge well
Injection well
Percolation tank
Check dam
Gabion structure
Sub-surface dyke
Roof top rain water harvesting
Recharge wells to arrest Salinity Ingress Aquifers
Artificial Recharge Techniques
Roof Top Rain Water Harvesting
Rain Water run off from town/village
Road side depressions for storm water
collection and diversion
Bore Blast Technique for increased recharge
Stream modification with
Nalla bunding
Gully Plugs
Recharge Pits
PRE-REQUISITES FOR GROUND WATER RECHARGE
FAVOURABLE HYDRO-GEOLOGICAL SET-UP
DEPLETED AQUIFERS
ADEQUATE SURFACE WATER AVAILABILITY
NON POLLUTED CATCHMENT
NEED FOR GROUNDWATER
TECHNICAL FEASIBILITY AND ECONOMY
Rain water harvesting.ppt (Size: 5.01 MB / Downloads: 96)
RAIN WATER HARVESTING TECHNIQUES
1. Storage of rain water on surface for future use.
2. Recharge to ground water.
Recharge pits
Recharge trenches
Recharge shaft
Trench with recharge well
Shaft with recharge well
Recharge through abandoned hand pumps
Recharge through abandoned tube well
Recharge well
Injection well
Percolation tank
Check dam
Gabion structure
Sub-surface dyke
Roof top rain water harvesting
Recharge wells to arrest Salinity Ingress Aquifers
Artificial Recharge Techniques
Roof Top Rain Water Harvesting
Rain Water run off from town/village
Road side depressions for storm water
collection and diversion
Bore Blast Technique for increased recharge
Stream modification with
Nalla bunding
Gully Plugs
Recharge Pits
PRE-REQUISITES FOR GROUND WATER RECHARGE
FAVOURABLE HYDRO-GEOLOGICAL SET-UP
DEPLETED AQUIFERS
ADEQUATE SURFACE WATER AVAILABILITY
NON POLLUTED CATCHMENT
NEED FOR GROUNDWATER
TECHNICAL FEASIBILITY AND ECONOMY