Combined oil collecting device of peripheral floating weir in sewage regulating tank

Abstract

The invention relates to a combined oil collecting device of a peripheral floating weir in a sewage regulating tank. The combined oil collecting device of the peripheral floating weir in the sewage regulating tank comprises a water inlet plate, a floating oil collecting tank, a water inlet master pipe and a water outlet loop tube, wherein the water inlet plate suspends in the middle of the regulating tank and can flow up and down along with the liquid level; the floating oil collecting tank encircles the tank wall a circle; the water inlet plate comprises a suspension body and a sewage channel arranged around the suspension body, and a short pipe arranged at the bottom part of the sewage channel is connected with the water inlet master pipe through a water inlet hose, so that the sewage uniformly enters from the middle to the periphery in a radioactive manner, and surfaced sump oil is pushed towards the periphery; the floating oil collecting tank comprises an oil collecting tank and the suspension body; the oil collecting weir inlets are arranged inside and outside the oil collecting tank; the suspension body is connected with the oil collecting tank, and an oil discharge outlet of the oil collecting tank is connected to an oil outlet of the regulating tank through an oil discharge hose. The combined oil collecting device of the peripheral floating weir in the sewage regulating tank is the oil collecting device, which is good in oil collecting effect, simple in structure and convenient to install, and does not generate partial flow and short flow.

Description

technical field [0001] The invention belongs to the field of equipment, safety and environmental protection, and can be applied to the sewage treatment of oily sewage produced by oil exploitation, oil refining, oil depots and the like. Background technique [0002] In view of the large fluctuations in water volume and water quality of the oily sewage entering the sewage treatment plant, adjustment facilities should be installed in the sewage treatment plant. According to SH3095-2000 "Code for Design of Wastewater Treatment in Petrochemical Industry", the volume of adjustment facilities for refinery sewage can be determined according to the design water volume of 16h to 24h. In order to save land and improve treatment efficiency, in the past ten years, most domestic oily sewage treatment plants have used vaulted tanks, which are called regulating tanks. Because the sewage stays in the regulating tank for a long time, most of the sewage oil in the form of slick oil and disper...

AI Technical Summary

Problems solved by technology

However, there are still some deficiencies found in practical applications, such as: no power on the surface, and a small oil collection area; there is a dead angle for oil collection on the surface of the regulating tank, and the floating oil on part of the surface cannot enter the oil collector; when the liquid level is low, the sewage in the regulating tank Short flow and partial flow are generated, causing the slick oil to flow out with the water; the structure is more complicated, which not only increases the investment, but also increases the workload of installation, etc.

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