The invention discloses a pre-purified selective
water intake structure. The pre-purified selective water collecting structure comprises a vertical box type
reinforced concrete water intake tower positioned in a lake reservoir, wherein a plurality of
water intake ports are distributed on a body of the water intake
tower in a layered way; a drain
grating is arranged at the front end of the water intake port; an electric
gate valve is arranged in the middle of the water intake port; a reciprocating corridor is arranged at the rear part of the water intake port; a water injecting
pipe is arranged at the upper part of the reciprocating corridor; the upper part of the water injecting
pipe is connected with a ground pump
station; the reciprocating corridor is divided into three
geocells; a medicament feeding
pipe is arranged at the upper end of the first geocell and extends to the
tail end of each water intake port; water passing channels are arranged on a
reinforced concrete separation board between the second geocell and the third geocell;
sludge grooves are respectively formed in the bottom of the geocell and that of the third geocell;
sludge discharge pipes are arranged at the bottoms of the
sludge grooves; electric gate valves are arranged on the sludge
discharge pipes; sludge interface monitors are mounted at the upper parts of the sludge grooves; and a water draining steel pipe is arranged on the third geocell. According to the pre-purified selective water intake structure,
raw water can be purified, the quality of water entering the
plant is ensured, the operation load of a water
plant is effectively reduced and the operation cost is reduced; and the pre-purified selective water intake structure is simple for operation and easy for management.