Adjustable air-floating and precipitating switching solid-liquid separating device

Abstract

The invention relates to an adjustable air-floating and precipitating switching solid-liquid separating device. In the adjustable air-floating and precipitating switching solid-liquid separating device, a raw water inlet is arranged at the lower end of one side of a body, the body is internally provided with a dissolved air releaser, a baffle plate, an air-floating and precipitating inclined board assembly, a perforated lattice wall, a precipitate water-collecting weir, a precipitate water-collecting tank and an air-floating water-collecting tank, and a slag-scraping machine is arranged above the body. The adjustable air-floating and precipitating switching solid-liquid separating device is characterized in that an air-floating contact region is arranged around the dissolved air releaser, the position where the air-floating and precipitating inclined board assembly is located is a solid-liquid separating region, an air-floating water-collecting pipe arranged below the air-floating and precipitating inclined board assembly is communicated with the air-floating water-collecting tank, an inclined angle regulating mechanism of the air-floating and precipitating inclined board assembly is arranged on the body, can realize the regulation of an inclined angle of 60-90 DEG and the regulation of an inclined board gap, and can be used in an equidirectional flow, a reverse flow and a lateral flow. The adjustable air-floating and precipitating switching solid-liquid separating device integrates air floatation and precipitation, has multiple functions, and properly can realize the switching operation of the air floatation and the precipitation solid and liquid separation according to the condition of the water quality of the raw water. The invention has the advantages of simple structure, small occupation area, wide application range, good treatment effect, and the like.

Description

technical field [0001] The invention relates to the technical field of water treatment, and is an adjustable floating-sink switching solid-liquid separation device. Background technique [0002] Air flotation and sedimentation equipment is the most widely used equipment in the water purification process, and has obtained good design and operation experience from the technical principle to the equipment structure. However, the water treatment process based on flocculation sedimentation or flocculation air flotation is sometimes difficult to adapt to the fluctuation of water quality. The water quality of water sources in some areas changes with the seasons; in terms of industrial wastewater treatment, the nature and content of suspended impurities in water and the composition of organic impurities will also undergo major changes due to factors such as adjustments in production processes. Therefore, when the water quality of the water treatment system designed according to the...

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Problems solved by technology

Therefore, when the water quality of the water treatment system designed according to the pre-approved water quality changes, it is difficult for the process effluent to meet the water quality requirements

[0003] The existing air flotation tank with a single function relies on air bubbles to hold up the flocs. The more and heavier the flocs, the more air bubbles are needed, so the air flotation tank is not suitable for the treatment of high turbidity raw water; the existing single function Although the inclined plate or inclined tube sedimentation tank is suitable for the treatment of raw water with high turbidity, it is not suitable for the treatment of algae raw water, because the holes of the perforated pipes in the tank are easy to be blocked, the sludge discharge effect is unstable, and maintenance is inconvenient; China invented Patent Publication No. CN2122673 discloses a "lateral flow inclined plate floating sink solid-liquid separation device", which consists of two parts: a lateral inclined plate device and an air flotation device. The lateral inclined plate device is a rectangular inclined plate made of plastic. There are round holes and fins at its four corners, so that the inclined plate has a fixed inclination angle of 60°, and is fixed on the support frame by multiple parallel inclined plates; the air flotation device is mixed with gas from the gas storage tank and water In the air irrigation, the dissolved air water is sprayed into the pool through the release device to generate air flotation; the two devices work together to achieve the purpose of solid-liquid filtration

The disadvantage of this device is that the angles of the 60° parallel inclined plates fixed on the support frame cannot be adjusted, which reduces the air flotation effect, poor adaptability to raw water quality, and the operation effect of removing raw water containing fibers and algae. Cannot meet the design requirements

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