Device for realizing gas-liquid-solid three-phase separation in sewage treatment and application method thereof

Abstract

The invention discloses a device for realizing gas-liquid-solid three-phase separation in sewage treatment and an application method thereof. The device comprises a barrel composed of a double-layer concentric outer barrel and a double-layer concentric inner barrel, a lower cone concentric with the outer barrel is arranged at the bottom of the outer barrel, an upper cone is arranged on the outer side wall of the inner barrel, the maximum diameter of the lower end of the upper cone is configured to be smaller than the maximum diameter of the outer cylinder, the upper cone and the lower cone arebuckled and arranged in a staggered mode in the longitudinal space, a plurality of grooves are formed in the edge of the bottom of the inner barrel, a plurality of groove feet are defined between theadjacent grooves, and the inner barrel is arranged on the upper cone through the groove feet. According to the device for realizing gas-liquid-solid three-phase separation in sewage treatment and theapplication method of the device, by arranging the groove and the groove foot which are matched with each other, a blocky biological membrane formed by sludge can return to the inner barrel through the groove in time to further participate in biochemical reaction, and ammoniation floating is avoided.

Description

Technical field[0001]The invention relates to a device used in the case of sewage treatment. More specifically, the present invention relates to a gas-liquid-solid three-phase separation device and its application method used in the case of small flow sewage.Background technique[0002]Sequencing Batch Reactor Activated Sludge Process (Sequencing Batch Reactor, SBR for short).[0003]SBR activated sludge process equipment was first proposed by Professor R.L.Irvine of Norodan University in the late 1970s. This process has the characteristics of low investment, impact load resistance, sludge not easy to expand, and can effectively remove N and P. However, the SBR process and equipment have not been widely used since they were invented. The reason is that the SBR process equipment has technical problems such as inability to continuously treat sewage and poor post-treatment effects after miniaturization.[0004]For these technical problems, the patent number in the prior art is: 202010166281....

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Problems solved by technology

However, since the invention of the SBR process and equipment, it has not been widely used. The reason is that the SBR process equipment has technical problems such as inability to continuously treat sewage and poor treatment effect after miniaturization.

[0004] For these technical problems, the patent number in the prior art is: 202010166281.3, and the patent name is the sequential batch continuous discharge sewage processor and its application method. A technical scheme is proposed, which is added to the SBR sewage treatment process equipment of R.L.Irvine The "three-phase separator" changes the original five sewage treatment batch processes (water intake, standby, aeration, sedimentation, and drainage) into three sequential batches (water intake, standby, aeration), and two continuous (sedimentation, drainage), the batch sequence time is shortened by 70%, the efficiency is increased by 50%, and it is possible to miniaturize the equipment, which can be used in the use place with a daily sewage output of 5 tons, but in actual use, the inner barrel of the equipment is different from the The connection between the outer barrels is to drill holes in the lower part of the inner barrel. Although the holes can pass through the sludge, they cannot pass through the blocky biofilm. The blocky biofilm formed by the sludge cannot return to the inner barrel in time to participate in biochemical reactions, and ammonia will be generated. It will float up and affect the sedimentation effect, and it cannot necessarily achieve the declared effect in long-term use

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