Self-adaptive oil-water separation equipment

Abstract

The invention discloses self-adaptive oil-water separation equipment, relates to the technical field of sewage treatment, combines an air suspension method and a membrane separation method for oil-water separation, provides a top cover opening and closing mechanism capable of automatically replacing oil filtering cloth, can conveniently replace a membrane, is high in oil-water separation efficiency, and is convenient to operate. The oil-water separation equipment further comprises a bubble generation mechanism, bubbles with adaptive diameters can be introduced according to the sizes of different oil drops, and the longitudinal position of the introduced bubbles is adaptively changed along with the rotating speed of the stirring motor; through the arrangement, the self-adaptive oil-water separation equipment disclosed by the invention can achieve the purposes of high efficiency and intelligence during oil-water separation.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an adaptive oil-water separation device. Background technique [0002] The methods commonly used in the existing oil-water separation mainly include gravity separation method, coarse particle method, air suspension method, flocculation method, electrochemical method, biological treatment method, adsorption method, membrane separation method and magnetic separation method. The above-mentioned various methods have their own advantages and disadvantages. For example, the gravity separation method and the air suspension method have mature technology, low cost, but the separation effect is general and the separation speed is relatively slow; High; biological treatment, adsorption, magnetic separation have good separation effect but high infrastructure cost and high cost; electrochemical separation has high separation efficiency but large power consumption, and requires high c...

AI Technical Summary

Problems solved by technology

The above-mentioned methods have their own advantages and disadvantages. For example, the gravity separation method and air suspension method are mature in technology and low in cost, but the separation effect is average and the separation speed is slow; the coarse particle method, flocculation method, and membrane separation method have good separation effects but are easy to block and cost. Higher; biological treatment, adsorption, and magnetic separation have good separation effects but high infrastructure costs and high costs; electrochemical separation has high efficiency but consumes a lot of power, and has high requirements for conductor materials

In the prior art, such as patent document 1 (CN111054094A), it discloses an embedded oil-water separator, which passes oil-water mixed liquid into the oil-water inlet pipe, and after the liquid passes through the cylindrical oil filter cloth, the oil remains in the filter cartridge Inside, the oil-water separation is realized after the water flows out of the filter cartridge, and a structure that can specially clean the oil filter cloth is also set up. The oil in this separator is left in the oil filter cloth, which has the problem of clogging the oil filter cloth, which greatly reduces the separation efficiency. At the same time, the oil filter cloth is also a consumable product and needs to be replaced regularly. It is difficult to replace because it is arranged in the filter cartridge; another example is patent document 2 (CN109502675A), which discloses a high-efficiency oil-water separation for different oil particle diameters method, which is deduced by the classic Stokes sedimentation formula, and the finite element calculation analysis is used to obtain the bubble particle size corresponding to the oil droplet-bubble adherent body completely removing the oil droplet. Bubbles of different particle sizes are injected. For oil droplets with large particle sizes, bubbles with small particle sizes should be injected, and for oil droplets with small particle sizes, bubbles with large particle sizes should be injected. However, in a The particle size of the air bubbles introduced in the oil removal cycle is uniform, and it does not consider that the oil droplets will coagulate with each other, so the particle size of the oil droplets will also change. , obviously can't remove the oil droplets very well, on the contrary, it will waste the air and energy. Although it discloses that it can carry out secondary cycle oil removal, it will undoubtedly make the cost higher and the efficiency lower; finally , as in patent document 3 (CN109675346B), which discloses a continuous working device for oil-water separation, which drives the oil and water in the separation pool to separate oil and water with the buoy as the boundary through the rotation of the motor. This separation method utilizes centrifugal force Carry out oil-water separation, but it takes a long time for oil-water separation, and the separation effect is not good for small-sized oil droplets, especially for the separation at the connecting liquid surface of oil and water.

[0003] To sum up, in the prior art, for the oil-water separation equipment, the air suspension method or the membrane separation method is used alone, and there is no oil-water separation equipment that can make up for the defects of the two methods, and the existing oil-water separation In the equipment, it is also inconvenient to replace the oil filter membrane used. The existing membrane separation will take a long time for oil-water separation because the oil will adhere to the membrane. When the air suspension method is used for oil-water separation, only the oil droplets are considered. A certain particle size does not take into account that the size of oil droplets will change, and air bubbles with different pore sizes need to be adaptively introduced to remove oil. Based on this, the present invention provides a combination of air suspension method and membrane separation method, which can It is an adaptive oil-water separation equipment that is convenient for membrane replacement, has high oil-water separation efficiency, and can feed air bubbles with suitable diameters according to different oil droplet sizes, and the longitudinal position of the air bubbles is adaptively changed with the speed of the stirring motor

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