Rotary dissolving air flotation purifier

Abstract

The invention discloses a rotary dissolving air flotation purifier, comprising a rectangular box body, a rotary dissolving device, a releaser, a slag scraping device and a slag extractor, wherein, therectangular box body is provided with a sewage water inlet and a clear water outlet, the rotary dissolving device is arranged in or out of the box body and can form supersaturated high-pressure air dissolving water, the releaser is arranged at the bottom of the box body at the sewage water inlet, and adopts no-clogging pressure loss structure, and the releaser is communicated with the water outlet of the rotary dissolving device; the slag scraping device is arranged on the upper part, which is close to the clear water outlet, of the box body and is used for scraping floating slag on water, and the slag extractor is arranged on the upper part of the box body and is arranged between the clear water outlet and the end of the slag scraping device. The invention has the characteristics of small space occupation, low energy consumption, being quiet, no clogging, high efficiency, easy operation, few faults, strong popularity and the like, and is widely used for removing pollutants of suspended substance, grease and the like in the industry of dye printing, hide manufacture, oil refining, paint processing, chemicals processing, dairy processing, vehicle spray finishing, paper making, mechanical workout, slaughter, food processing, beverage processing, dairy food processing, brewing, domestic sewage treatment, etc.

Description

Technical field: [0001] The invention relates to a water purifier, in particular to a spin dissolved air flotation water purifier. Background technique: [0002] With the rapid development of my country's national economy and the rapid improvement of people's lives, according to the 2007 National Environmental Statistical Bulletin issued by the Ministry of Environmental Protection on September 24, 2008, the total discharge of wastewater in the country in 2007 was 55.68 billion tons, of which industrial wastewater discharge 24.66 billion tons, 31.02 billion tons of urban domestic sewage discharge, 91.7% of industrial wastewater discharge compliance rate, only 49.1% of urban domestic sewage treatment rate, resulting in 85% of my country's surface water of rivers and lakes are polluted to varying degrees, industrial water and human and livestock drinking Water shortages have restricted the development of the national economy and affected people's lives. The Chinese government pu...

AI Technical Summary

Problems solved by technology

Vortex-concave air flotation uses high-speed rotating impellers to break up the inhaled air to generate bubbles. Since more than 85% of the bubbles are larger than 100 μm, it is ineffective for flotation, and the large bubbles rise too fast, destroying the flocs, and the treatment efficiency is low; Although air flotation can produce micro-bubbles of 20-80 μm, the flotation effect is better than that of vortex air flotation, but it requires complex air-dissolving devices such as dissolved air tanks, air storage tanks, air compressors, high-pressure pumps, etc., and the noise is large ; The microbubbles produced by electric floating are also small, but the energy consumption is large. It needs 1-3 kilowatt-hours of electricity to treat 1m3 wastewater, and the treatment cost is high, so it is rarely used.

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