Q71. Groundwater replenishment programs are very important to the survival of the Earth and all of its inhabitants. Some communities inject treated wastewater into aquifers:
1. To recharge it artificially, since nature cannot keep up with urban demands.
2. For storage in a place that is not subject to as much evaporation as a reservoir.
3. To prevent flooding due to too much wastewater above the surface
Which of the above statement(s) is/are incorrect?
Q71. Groundwater replenishment programs are very important to the survival of the Earth and all of its inhabitants. Some communities inject treated wastewater into aquifers:
1. To recharge it artificially, since nature cannot keep up with urban demands.
2. For storage in a place that is not subject to as much evaporation as a reservoir.
3. To prevent flooding due to too much wastewater above the surface
Which of the above statement(s) is/are incorrect?
The correct option is B (b) Only 2 and 3
In industrialized countries, urban sprawl is increasingly paving over land, forcing rainfall to flow to surface water, rather than seeping back into underground aquifers. Direct injection is where the treated water is put directly into the groundwater. It is used where the topography of the land is not suitable for large infiltration basins, such as in the Rockie Mountains. On the otherhand an infiltration basin is where "recharge waters such as treated municipal wastewater percolates from spreading basins through the unsaturated groundwater zone." The reason infiltration basins are so popular is because they are the most efficient and require the least maintenance. This form of recharge is best in huge open areas where plant an animal life is undisturbed.
1. Aquifer water can be improved by recharging with high quality injected water.
2. Recharge can significantly increase the sustainable yield of an aquifer.
3. Recharge methods are environmentally attractive, particularly in arid regions.
4. Most aquifer recharge systems are easy to operate.
5. In many river basins, control of surface water runoff to provide aquifer recharge reduces sedimentation problems.
6. Recharge with less-saline surface waters or treated effluents improve the quality of saline aquifers, facilitating the use of the water for agriculture and livestock
(b) Only 2 and 3
In industrialized countries, urban sprawl is increasingly paving over land, forcing rainfall to flow to surface water, rather than seeping back into underground aquifers. Direct injection is where the treated water is put directly into the groundwater. It is used where the topography of the land is not suitable for large infiltration basins, such as in the Rockie Mountains. On the otherhand an infiltration basin is where "recharge waters such as treated municipal wastewater percolates from spreading basins through the unsaturated groundwater zone." The reason infiltration basins are so popular is because they are the most efficient and require the least maintenance. This form of recharge is best in huge open areas where plant an animal life is undisturbed.
1. Aquifer water can be improved by recharging with high quality injected water.
2. Recharge can significantly increase the sustainable yield of an aquifer.
3. Recharge methods are environmentally attractive, particularly in arid regions.
4. Most aquifer recharge systems are easy to operate.
5. In many river basins, control of surface water runoff to provide aquifer recharge reduces sedimentation problems.
6. Recharge with less-saline surface waters or treated effluents improve the quality of saline aquifers, facilitating the use of the water for agriculture and livestock
