Square sedimentation tank and mud scraper

Abstract

The invention discloses a square sedimentation tank and a mud scraper. The square sedimentation tank and the mud scraper are characterized by consisting of a square tank body, a corner mud scraper anda central mud scraper. The bottom of the square sedimentation tank is square, the center line of the steel rail, the movement track line of the corner mud scraping plate close to the tank wall end and the center line of the horizontal section of the scum baffle coincide in the vertical direction and are quasi-square, and the shape and the size of the corner mud scraping plate are selected from corresponding Lyocell triangles. The corner mud scrapers drive corner mud plates to move along the quasi-square trajectory to scrape the pool bottom sludge near the pool walls and between the included angles of every two adjacent pool walls into the responsible range of the central mud scraper. The central mud scraper is driven by the corner mud scrapers to rotate so as to scrape the sludge in the charge range of the central mud scraper. The square sedimentation tank disclosed by the invention has the advantages of good hydraulic property of the circular sedimentation tank and a high area utilization rate of the rectangular sedimentation tank, and the sludge scraper can simultaneously scrape sludge in the bottom of the square tank and dross on the water surface.

Description

technical field [0001] The invention relates to water treatment structures and equipment technology, in particular to the mud-water separation technology of the sedimentation tank of the waterworks and the mud-water separation technology of the primary sedimentation tank and the secondary sedimentation tank of the municipal sewage plant. Background technique [0002] In the field of water treatment structures and equipment, the main types of sedimentation tanks are advection sedimentation tanks and radial flow sedimentation tanks, and the main types of corresponding mud scrapers are driving mud scrapers and peripheral (or central) transmission mud scrapers. According to the sedimentation curve, the hydraulic characteristics, mud-water separation effect and sedimentation efficiency of the radial flow sedimentation tank are far better than those of the horizontal flow sedimentation tank, but the radial flow sedimentation tank has the problems of difficult construction and low l...

AI Technical Summary

Problems solved by technology

According to the sedimentation curve, the hydraulic characteristics, mud-water separation effect and sedimentation efficiency of the radial flow sedimentation tank are far better than those of the horizontal flow sedimentation tank, but the radial flow sedimentation tank has the problems of difficult construction and low land utilization rate, especially for multiple The problem is more prominent when the circular sedimentation tanks are arranged together; the corresponding peripheral (or central) transmission sludge scraper can only scrape the sludge within the circumference range

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