HOTLINE~ 0776 209 299 / 070 32 72 082

PND නළ ලිං

කාර්මිකයෝ

නවීන යන්ත්‍රානුසාරයෙන්

කළුගල විද ජලය ලබා දීම.

දිවයින පුරා අප සේවාව ලබා දෙයි.

පහසු ගෙවීමේ ක්‍රම

* ජල මූලාශ්‍ර පරීක්ෂාව නොමිලේ !!!

* වසර 3 ක පූර්ණ වගකීම් සහතිකය.
* වසර 3 න් පසුවද අප සේවාව ලබා ගත හැක.
* ලිං පිරිසිදු කරදීම.
* ලිං අළුත්වැඩියා කරදීම.
* මෝටර් සවිකිරීම.

Tube well

Temporary reservoir

A small reservoir of water is made at the outlet of the tube well. This reservoir is used for different usage of water by the local population.

Casing

The tube well casing houses the inlet, cylinder, piston valves and rising main of a “down-the-hole” type hand pump. Casing to support the external surfaces of the borehole against collapse may be needed, either temporarily or permanently, and is often made of PVC pipe, which is both cheap and inert.

Seepage down the tube well bore is prevented by the sanitary seal. Seepage from the ground above the aquifer is excluded by the lengths of plain casing. Water to be pumped is admitted through slots in the lower lengths of casing.

Water abstracted from aquifers in relatively soft ground usually contains sand or silt particles, which are liable to cause rapid wear to pump valves and cylinders (and dissatisfaction among consumers). Methods of preventing these particles from reaching the pump are of two general types, screening and sand/gravel packing.

Screening

The drawing shows slots in the PVC casing which can be cut on site, using a hacksaw and it is sealed Glass Reinforces Epoxy(GRE). Strainers have also been widely used in projects in Bangladesh.

Sand/gravel packing

The drawing shows graded sand and gravel, which is placed from the top of the borehole. More compact, pre-bonded, packs of sand and/or gravel are available commercially; some of these can also form part of the pump inlet assembly. Sand and/or gravel packing is meant to eliminate particles from the water before they reach the screen and that would otherwise have passed through

Ground Water Safety

The introduction of tube wells has led to major arsenic poisoning in Bangladesh.[1] High concentrations of arsenic occur naturally in the soil in some areas of Bangladesh.

 

WEBSITE – Create By, Jayakody 0776 209 299 {imo/viber/whatsapp}

*කරුණාකර පහත ඇති අපගේ Like Page එකට Like එකක් දාන්න.

Opening Hours

Monday

ANY TIME

Tuesday

ANY TIME

Wednesday

ANY TIME

Thursday

ANY TIME

Friday

ANY TIME

Saturday

ANY TIME

Sunday

ANY TIME