Gas float and deposition equipment for separating solid and liquid

Abstract

The invention relates a device for purifying water quality with two water processing technology for air-float and precipitation switch operating. In the invention, a waterflow hole is opened on middle underpart of contact area baffle plate, an intercommunicating valve is fit on contact area baffle plate of waterflow hole, a pounched water collecting pipe is fit on underpart in casing at separating area, outside end of the pounched water collecting pipe is connected with and end of air-float water discharging valve through the casing, the other end of the air-float water discharging valve is connected with air-float water discharging pipe, a through hole is opened on top-part of pounched lattice wall.

Description

technical field [0001] The invention relates to a water purification device capable of switching two water treatment processes of air flotation and sedimentation, in particular to a solid-liquid separation device in the fields of domestic and production water and sewage treatment. Background technique [0002] The Chinese patent number is ZL92104174.8, which is an invention patent named "Floating and sinking solid-liquid separation device of lateral flow inclined plate". This device has a certain effect on the treatment of low-temperature, low-turbidity and high-algae water quality raw water; it also has good adaptability to the treatment of high-turbidity raw water. However, the production practice proves that there are still problems that seriously affect the water treatment effect; first, the leading idea of ​​the design is to take into account the requirements of both air flotation and sedimentation equipment, and in fact neither air flotation nor sedimentation can be we...

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Problems solved by technology

However, the production practice proves that there are still problems that seriously affect the water treatment effect; first, the leading idea of ​​the design is to take into account the requirements of both air flotation and sedimentation equipment, and in fact neither air flotation nor sedimentation can be well satisfied Water purification effect, second, the baffle in the contact area is set relatively short because of the two technological requirements of air flotation and sedimentation, which fails to meet the full mixing and contact between dissolved air water and water to be treated during air flotation to form flocculation At the same time, because the setting of the baffle in the contact area hinders the sedimentation and water distribution, it is easy to cause the well-formed flocs to break and affect the treatment effect. Third, in order to take into account both air flotation and sedimentation, a perforated flower wall and a water collection tank are installed. The water collection and discharge device is shared by air flotation and sedimentation. The perforated flower wall opening is located in the middle, while air flotation requires water collection at the bottom and sedimentation requires water collection at the top. Setting it in the middle does not satisfy both, resulting in no matter whether it is air flotation or sedimentation during operation. There are more flocs in the effluent, which affects the water purification effect of sedimentation and air flotation

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