Water purification system and water purification method for inclined tube floating sedimentation tank

Abstract

The invention discloses a water purification system and a water purification method for an inclined tube floating sedimentation tank. The bottom of a flocculating chamber is communicated with the bottom of an air flotation contact chamber, the bottom of the air flotation contact chamber is provided with a water inlet of a sedimentation water distribution area, a gate plate is arranged at the water inlet, an inclined tube sedimentation area is positioned above the sedimentation water distribution area, an air flotation separation chamber is positioned above the inclined tube sedimentation area, and the inclined tube sedimentation area is communicated with the sedimentation water distribution area and the air flotation separation chamber. The water purification method comprises the following steps of: (1) adjusting the state of each tube orifice of the water purification system; (2) mixing raw water and a coagulant; (3) performing flocculation; (4) performing air flotation contact; and (5) performing air flotation separation and sedimentation to obtain purified water. When an air flotation and sedimentation combined process and a single sedimentation process are operated, the converting operation of the two processes is simple. By selecting different operating units for water of a yellow water introduction reservoir according to the water quality, the water temperature and the water quantity changed with season and climate, the effect of double results with half work can be achieved.

Description

technical field [0001] The invention relates to a water quality treatment system and a treatment method, in particular to a water purification system and a water purification method for floating and sinking ponds of the Yellow River Reservoir in the lower reaches of the Yellow River. Background technique [0002] The water pollution in the lower reaches of the Yellow River is serious, and high algae and organic matter are common water quality problems in the water diversion from the Yellow River reservoirs. With the mandatory implementation of the "Drinking Water Hygienic Standard" (GB5749-2006), the conventional process with outdated technology and outdated facilities has been difficult to cope with serious water pollution and high-quality drinking water quality requirements. According to the water quality characteristics of the Yellow River Reservoir, although various measures to improve the conventional water treatment process have been proposed, no satisfactory results h...

AI Technical Summary

Problems solved by technology

The continuous floating-sinking tank ("A New Type of Floating-sinking Tank" patent number: 200710039884) adopts a double-layer combination arrangement, combining mixing, flocculation, sedimentation, and air flotation processes, and adopts the process of first sedimentation and then air flotation or single sedimentation. It can effectively treat raw water with changing water quality, but the dissolved air releaser needs to be taken out during the single precipitation process, otherwise it will affect the flow of raw water, reduce the precipitation effect, and make it troublesome to switch between different processes

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