Draw the schematic sketch of river intake and canal intake.
Answers
Intake is a well type masonry or concrete structure, whose function is provide clam and still water, free from floating matter for water supply schemes. Its main purpose is to provide cals and still water conditions so that comparatively pure water may be conveniently collected from the source. While selecting site for locating the intake, the below mentioned points should be carefully attended to:-
(i) Intake work should provide purer water so that its treatment may become less exhaustive.
(ii) Heavy water currents should not strike the intake directly. This aspect can be achieved by suitably shifting the proposed intake.
(iii) Intake should be located at such a situation where sufficient quantity of water remains available under all the circumstances.
(iv) Site should be well connected by good type of roads.
(v) Site should be such that intake should be in a position to provide more water if required to do so.
(vi) It should not be located in navigation channels, because water of such channels is generally polluted.
(vii) During floods in rivers, flood waters should not be concentrated towards the intake.
(viii) It should not be located on the curve of the river. If there is no alternative then intake should be located on the outer bank and not on the inner bank.
(ix) Intake should be located on up stream side of the town. Water will not be contaminated on this side due to sewage disposal of the city....