Pre-purified selective water intake structure

Abstract

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.

Description

technical field [0001] The invention relates to a fixed water intake device of a water supply project, in particular to a pre-purification selective water intake structure using a lake reservoir as a water source for cities and towns. Background technique [0002] Urban water use mainly considers the distribution of water temperature, turbidity, plankton, and dissolved oxygen in order to obtain water bodies that are easy to handle, have low turbidity, and contain less impurities such as plankton. In order to achieve this goal, many reservoirs have transformed the water intake structures, adopting a layered water intake method, that is, by opening water intakes at different heights, avoiding water layers containing more algae, sediment particles, etc., so as to obtain high-quality water bodies. . [0003] However, during heavy rainfall in summer, the turbidity of reservoir water will increase significantly, mainly due to the following aspects: [0004] 1) Heavy rainfall wil...

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Problems solved by technology

Due to the high turbidity of the raw water entering the plant, the water plant is often in a high-load operation state during heavy rainfall in summer, mainly manifested in the large amount of chemical dosage in the coagulation stage, and the water quality after filtration is not up to standard, etc., resulting in an increase in the treatment cost of the water plant

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