Coagulating sedimentation device taking air as power source

Abstract

The invention discloses a coagulating sedimentation device taking air as power source. The coagulating sedimentation device comprises a fast mixing area, a slow mixing area, a coagulant adding device,a flocculant adding device, and a precipitation separation area, wherein a fast aeration device for performing a stirring effect through aeration is arranged in the fast mixing area; an inlet of theslow mixing area is communicated with an outlet of the fast mixing area, and a slow aeration device for performing the stirring effect through aeration is arranged in the slow mixing area; the coagulant adding device is used for adding coagulant in the fast mixing area; the flocculant adding device is used for adding flocculant in the slow mixing area; and an inlet of the precipitation separationarea is communicated with the outlet of the slow mixing area so as to perform precipitation separation on the entered muddy water mixture. In the coagulating sedimentation device disclosed by the invention, the stirring is performed by no longer adopting the common stirring blade, but through the aeration of the aeration device, the muddy water mixture is stirred so as to form the stirring on themuddy water mixture; the bubble buoyancy force is utilized to realize the energy conservation; the entire structure is simple, the structure of the aeration device is small, the maintenance is convenient, and the maintenance cost is low.

Description

technical field [0001] The invention relates to the technical field of coagulation and sedimentation, and more specifically relates to a coagulation and sedimentation device using air as a power source. Background technique [0002] In the prior art, common high-density sedimentation tanks are usually composed of three independent fast-mixing zones, slow-mixing zones and sedimentation zones. Among them, the PAC (inorganic polymer coagulant) dosing device is used to add PAC medicament to the fast mixing area, and perform rapid mixing reaction through the high-speed rotating underwater agitator in the fast mixing area, and then enter the slow mixing area, pass PAM ( Non-ionic polymer flocculant) dosing device adds PAM to the slow-mixing zone, under the action of a low-speed rotating underwater agitator in the slow-mixing zone, it is completely mixed to form larger flocs and then enters the sedimentation zone for mud-water separation , to achieve the removal of total phosphoru...

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a coagulation and sedimentation device with air as the power source, which can effectively solve the problems of high cost and inconvenient maintenance of the coagulation and sedimentation device

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