 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, Tube 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.
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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. |
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