Nature replenishes the Groundwater
Resource annually through seasonal rainfall, by way of
infiltration through soil layers. Due to urbanisation,
the soil surface exposed to the recharge gets drastically
reduced and therefore natural recharge gets diminished.
Groundwater
resources have already been extensively developed and
therefore any further indiscriminate development should
not take place. Groundwater resource as a natural resource
has the major benefit in meeting the emergency supplies
during the water scarcity periods. In order to maintain
the groundwater resource potential, a hydraulic equilibrium
must be made between the availability and utilisation.
Measures dovetailing rain water harvesting and artificial
recharge will augment the groundwater resource.
At
this juncture, measures are to be taken up by various
Governmental and non-Governmental organisations as well
as the public at large, so as to harvest the rainfall
and maintain groundwater balance. Such measures will
help to have reliable and sustainable groundwater resource
for supplementing the domestic and industrial water
supply needs of urban area.
Artifical
Recharge
Artificial recharge may
be defined as the process of augmenting the natural infiltration
of rain water or surface run off into the underground
formation by some artificial methods. The methods suggested
are water spreading, recharge through pits, trenches,
bore wells, shafts and directly diverting run off water
into the existing wells. The choice and effectiveness
of any particular method is governed by local hydro geological
and soil conditions and ultimate water use.
Why
PVC - Main Benefits of PVC
Corrosion
resistance:
» No surface Corrosion. » No protective coating required. » Immune to galvanic or electrolytic
erosion. PVC pipes are not attacked by low
or high concentration of acids,
oxidizing agents, alkalis, oils fats and halogens.
Low
thermal conductivity means it maintains uniform
temperatures in transforming fluids.
Energy
saving, Environment friendly recyclable and Flexible.
Biological
resistance
» Fit for purity water applications.
» Stability of PVC pipes against
rodent attack.
Abrasion
resistance
Due
to toughness and inner bore smoothness it's ideal
for abrasive resistant application.
Always
available in wide variety of custom colors.
Can
be installed at very low cost further more it
is maintenance free (no paining or no coating
required) and up to certain extent they are fire
resistance.
The
coefficient of thermal expansion of rigid PVC pipes
is 5-6 x 10^-2 per 1 degree Celsius. This means
that in a 100 feet run,the length of pipe will alter
by 1 inch per 10 degree Celsius change in temperature.
Compared to PVC the coefficient of thermal expansion
for CI/GI pipes is 1-2 x 10^-2 per one degree Celsius.
Concept
Groundwater
resources have already been extensively developed and
therefore any further indiscriminate development should
not take place. Groundwater resource as a natural resource
has the major benefit in meeting the emergency supplies
during the water scarcity periods. In order to maintain
the groundwater resource potential, a hydraulic equilibrium
must be made between the availability and utilisation.
Measures dovetailing rain water harvesting and artificial
recharge will augment the groundwater resource. 
