Oxidization-type air-flotation coupling ultrafiltration water purification system and method

Abstract

The invention discloses an oxidation-type air-flotation coupling ultrafiltration water purification system. The oxidation-type air-flotation coupling ultrafiltration water purification system comprises an improved CCDAF technology air-flotation pond integrating same-direction flow and different-direction flow, the improved CCDAF technology air-flotation pond is internally provided with a reverse flow collision contact chamber, a same-direction flow adhesion contact chamber, an air-flotation separation chamber and an ultrasonic chamber in sequence in the water flow direction, an immersed ultrafiltration membrane pond is connected to the improved CCDAF technology air-flotation pond, and a clear water pond is connected to the immersed ultrafiltration membrane pond; two air dissolving systemsare connected to the clear water pond and connected with the improved CCDAF technology air-flotation pond and the immersed ultrafiltration membrane pond to provide high-pressure air-dissolving water for the improved CCDAF technology air-flotation pond and the immersed ultrafiltration membrane pond. The oxidation-type air-flotation coupling ultrafiltration water purification system achieves combined use of air flotation and ultrafiltration membranes, each other's advantages can be complemented, thus particulate matter with a wider diameter range is removed, and the purpose of advanced treatmentof raw water is achieved.

Description

technical field [0001] The invention relates to the field of water supply treatment, in particular to a water purification system and method coupled with ultrasonic wave, ozone, ultrafiltration membrane and improved CCDAF process. Background technique [0002] With the increase of population, the rapid development of industry and agriculture, and the continuous acceleration of urbanization, the water environment pollution and eutrophication of lakes (reservoirs) in my country have become increasingly serious in recent years. According to the 2018 China Environmental Status Bulletin of the Ministry of Environmental Protection of the People's Republic of China, among the 109 lakes (reservoirs) whose nutritional status is monitored, 10 are oligotrophic, 66 are moderately nutritious, 25 are slightly eutrophic, and 25 are moderately eutrophic. 6 degrees of nutrient-rich. Compared with last year, the number of eutrophic lakes has increased, and the problems of water environmental...

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Problems solved by technology

However, the amount of hydroxyl radicals generated by the natural collapse of air microbubbles is small, which cannot meet the application requirements of degrading organic pollutants in the environmental field.

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