Oil-water mixed phase sewage settling tank

Abstract

The invention discloses an oil-water mixed phase sewage settling tank which comprises a primary settling tank, a secondary settling tank and an outer tank, wherein the primary settling tank is used for carrying out primary settling on oil-water mixed phase sewage; the secondary settling tank is used for carrying out secondary settling separation on floating oil overflowing from the primary settling tank; and the outer tank is used for supporting and mounting the primary settling tank and the secondary settling tank. The the primary settling tank is internally provided with an adsorption type oil removing component, the adsorption type oil removing component comprises a hard material supporting pipe and an elastic material pipe, the hard material supporting pipe is sleeved with the elastic material pipe, an air chamber capable of being opened and closed is arranged on the outer wall of the elastic material pipe, the wall of the hard material supporting pipe is provided with a vent hole for communicating the middle hole of the hard material supporting pipe with the middle hole of the elastic material pipe, and the hard material supporting pipe is communicated with fluid of an air supply device through a branch air pipe and an air guide pipe in sequence. Compared with the prior art, the adsorption type oil removing component capable of being repeatedly used is additionally arranged, the amount of suspended oil drops and the amount of emulsified oil in discharged water can be greatly reduced, and under the condition that the same discharging index is achieved, the time consumed for settling and standing is short.

Description

technical field [0001] The invention relates to the technical field of oily sewage separation. Specifically, it is an oil-water mixed phase sewage settling tank. Background technique [0002] Since oil-water mixed-phase sewage contains various forms of oil pollution, such as floating oil, suspended oil droplets, emulsified oil, and dissolved oil, direct discharge will cause serious environmental pollution, and it is not convenient for direct second use. Usually, it is necessary to mix oil and water The oil-water separation of phase sewage can be carried out for further treatment. In the oil-water separation process, the oily sewage is usually separated by sedimentation method, and then the oil layer and the water layer are separated. However, in the process of sedimentation and static separation, if oil-water separation is performed only by standing still and through the difference in oil-water density, it will not only take a long time, but also a large part of the emulsi...

AI Technical Summary

Problems solved by technology

However, in the process of sedimentation and static separation, if oil-water separation is performed only by standing still and through the difference in oil-water density, it will not only take a long time, but also a large part of the emulsified oil in the oil-water mixed phase sewage is retained in the water phase, and it is also There will be a certain amount of suspended oil droplets remaining in the water phase

So people use adsorbents to absorb the suspended oil droplets in the water phase, but the existing adsorbents have poor reusability and high regeneration costs, which makes the existing oil-water sedimentation separation equipment rarely use adsorbents for Degreasing

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