Efficient coagulating sedimentation basin

Abstract

The invention provides an efficient coagulating sedimentation basin. The efficient coagulating sedimentation basin is provided with a flocculant mixing area, a sand adding area, a flocculation area and a sedimentation area in turn along the water flow direction, wherein the upper part of the sedimentation area is provided with an inclined tube or inclined plate; mechanical agitators are arranged in the flocculant mixing area, the sand adding area and the flocculation area; and the flocculant mixing area, the sand adding area and the flocculation area are of baffling types. In the invention, a mechanical agitation mode is adopted in the flocculant mixing area, the sand adding area and the flocculation area, so the phenomenon is eliminated that the processing effect, which is caused by insufficient reaction when the coagulating sedimentation basin operates in a non-full load mode, is unsatisfactory; and fine sand is introduced in a system, thereby increasing the specific gravity of micro-floc, improving sedimentation efficiency and reducing occupied area of the sedimentation basin. The efficient coagulating sedimentation basin has the advantages of being low in engineering investment, being reliable in operation, and being suitable for building large and middle tap water plants and reconstructing old plants.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and is mainly applicable to surface water treatment, and can also be used for sewage treatment after corresponding changes. Background technique [0002] In the existing technology, the surface water supply is mainly treated by coagulation and sedimentation. The sedimentation equipment is an important link in the separation of mud and water in the water treatment process, and its operation status directly affects the quality of the effluent. The advantages of the traditional advection sedimentation tank are that the structure is simple and easy to operate, and the work is relatively safe and reliable, so the required level of operation and management is low; the disadvantage is that it occupies a large area and the treatment efficiency is low. To reduce the turbidity of the pre-filtered water requires a large Increase the length of the sedimentation tank. Since the 1970s, inclined tube s...

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Problems solved by technology

These pulsations have no effect on the precipitation of large alum flower particles, but play a supporting role on the precipitation of incompletely reacted small particles, thus affecting the quality of effluent water

Secondly, as the scarcity of land resources becomes more and more serious, the government departments pay more and more attention to saving land, and the sedimentation efficiency of ordinary sloping plate sedimentation tanks is gradually unable to meet the demand.

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