| 摘要 |
<p>The borewell recharging system comprises a modular well for rain water harvesting consisting of atleast one module (lm) constructed around a bore well having a suction pipe (16) and a casing pipe (17) around the suction pipe. The modular well consists of a plurality of flat vertical elements (2) arranged together vertically side by side in close contact with one another in an endless configuration between a flat bottom element (3) and a flat top element (4) to describe an empty storage space (5) within. The various elements have holding means (6, 7, 8) to hold them together. The sidewalls of the vertical elements are chamfered to maintain close contact between the sidewalls of the adjacent vertical elements. The top element has a centre opening (3a) and a lid (9) for the centre opening therein. The casing pipe (17) is perforated (17a) at the lower part thereof and is closed at the top thereof and open at the bottom thereof and has air vents (13a) at the top thereof. A primary filter bed (14a) and a secondary filter bed (14b) are disposed in the module around the casing pipe one above the other. All the elements and the lid are made of mechanically strong, corrosion resistant, durable and non-porous material. (Fig 15)</p> |
