During the operation of the combined air flotation equipment, flocculant PAC or PAM can be effectively added to the raw water (PAC is 400 to 1000mg/1, PAM is about 1/5 of PAC). After effective flocculation reaction, its time, dosage and The flocculation effect must be determined by experiments, and the raw water enters the contact area after flocculation reaction.

In the contact area of the combined air flotation equipment during operation, the micro-bubbles and the flocs in the raw water are bonded to each other and enter the separation area together. . The scum is scraped by the foam scraper to the sludge area. The clean water in the lower layer flows to the clean water pool through the water collecting pipe. After treatment, part of the clean water is returned for use in the dissolved air system, and the other part is discharged.

The circular steel structure of the combined air flotation equipment is the main body and core of the sewage treatment machine. The interior consists of a releaser, a distributor, a sewage pipe, a water outlet, a sludge tank, a slag scraper and other systems. The releaser is a key component in the generation of microbubbles. The dissolved gas water from the dissolved gas tank is suddenly released here, forming a large number of micro-bubble groups, which are fully mixed with the wastewater, so that the flocs adhered to the water rise, and the clean water is completely separated. The clean water is discharged through the water outlet pipe, and the scum is scraped into the sludge tank through the scraping system, and flows to the sludge tank by itself.

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