Two-cylinder clarification tank

Abstract

The invention discloses a two-cylinder clarification tank, which mainly comprises a water discharging canal, a vent pipe, a sludge discharging main pipe, a reagent feeding pipe, a water inlet pipe, an annular sludge suction pipe, baffles, an inner cylinder, an outer cylinder and an annular fixing board; the inner cylinder is clamped in the center of the annular fixing board and is arranged concentrically with the outer cylinder; the outer edge of the annular fixing board is fixedly connected to the upper end of the outer cylinder; an end of the reagent feeding pipe is connected to the water inlet pipe; an end of the water inlet pipe is connected to the upper end of the inner cylinder; the water discharging canal is connected to the upper end of the outer cylinder; the annular sludge suction pipe is installed at the bottom of a tapered part of the outer cylinder and is fixed by bolts; a side edge of the annular sludge suction pipe is connected to the vent pipe; and the center bottom of the annular sludge suction pipe is connected with the sludge discharging main pipe. The two-cylinder clarification tank provided by the invention has advantages that fluid mechanics and physics are used to improve the coagulation-flocculation and precipitation efficiency according to gravity characters and functions of centrifugal force; energy consumption is greatly reduced through hydraulic characters and water processing costs are reduced; discharged water quality is obviously increased; and the land occupation area is decreased and investment of manpower and material resources is reduced.

Description

technical field [0001] The patent of the present invention mainly relates to the application of clarifier tanks in large, medium and small urban water supply plants, specifically a double-tube clarifier tank. Background technique [0002] The clarifier is a structure that integrates the two processes of flocculation and sedimentation, and mainly relies on the active sludge layer to achieve the purpose of clarification. The flocculation tank must have a complete set of mixing and flocculation equipment, which occupies a large area; the advection sedimentation tank is only for the settlement of particles, and the sludge at the bottom of the tank still has considerable flocculation activity that has not been used. The clarifier is a combination of the two, which not only reduces the land area but also makes full use of the flocculation of active sludge. In addition, with the improvement of the water quality requirements of urban water plants, the turbidity of the factory water...

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Problems solved by technology

In addition, with the improvement of the water quality requirements of urban water plants, the turbidity of the factory water is required to be below 3 degrees. In the future, the turbidity of the factory water will be further reduced (currently, the turbidity of the factory water of many water factories has reached 1 Below the degree), this requires that the flocculation effect should be further enhanced, and the sedimentation tank must have supporting filter structures to make the effluent quality up to standard. For small and medium-sized water plants, the initial investment is also relatively large

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