Shallow layer flotation machine for industrial wastewater treatment and treatment process thereof

Abstract

The invention relates to a shallow layer flotation machine for industrial wastewater treatment and a treatment process thereof. The shallow layer flotation machine in the invention comprises a slag-discharging barrel, a weir plate, a rotary central barrel, water distribution baffles, a rotary water inlet header pipe, rotary water inlet branch pipes, a rotary skimming device and a flotation machine barrel, wherein the slag-discharging barrel is at the geometric center of the flotation machine barrel; the rotary central barrel is on the outside of the slag-discharging barrel; the weir plate is arranged between the slag-discharging barrel and the rotary central barrel; the water distribution baffles are arranged between the rotary central barrel and the flotation machine barrel; the rotary water inlet header pipe penetrates through the slag-discharging barrel and extends to the water distribution baffles; the rotary water inlet branch pipes are connected with the rotary water inlet header pipe and extends between the water distribution baffles; the rotary skimming device is arranged on the upper part of the water distribution baffles; and the rotary central barrel, the rotary water inlet header pipe, the rotary water inlet branch pipes and the rotary skimming device are fixed on a central support which can drive the devices to perform rotary motion around the center; and the central support is connected with an electric motor. The shallow layer flotation machine in the invention integrates the functions of flocculation, flotation, skimming, precipitation, scraping and the like; and the treatment process in the invention has the advantages of higher separation efficiency, short residence time and small pool volume.

Description

technical field [0001] The invention relates to a shallow air flotation machine for industrial waste water treatment and its treatment process, which belongs to the transformation technology of the shallow air flotation machine and its treatment process for industrial waste water treatment. Background technique [0002] Suspended solids are common pollutants in industrial wastewater, which mainly cause physical water quality pollution, such as affecting the transparency of water bodies, reducing the photosynthesis of algae in water, and slowing down underwater activity. Suspended solids with a density higher than water can be removed by sedimentation, and suspended solids with a density closer to or lower than water can generally be separated and removed by air flotation. However, the suspended solids in industrial wastewater such as papermaking wastewater and spraying wastewater are some fine fibers, lignin and dyes. The traditional air flotation tank not only has low separ...

AI Technical Summary

Problems solved by technology

However, the suspended solids in industrial wastewater such as papermaking wastewater and spraying wastewater are some fine fibers, lignin and dyes. The traditional air flotation tank not only has low separation efficiency for this type of wastewater, but also has a long residence time. major issues

Images