The vortex air flotation system is a wastewater treatment technology that removes grease, colloids, and suspended solids in sewage (especially petrochemical oily sewage).

The wastewater coagulates with PAC and PAM and then flows to the aeration zone. The hollow impeller aerator configured here rotates at high speed to form a vacuum zone in the water so that the air is pumped underwater and crushed into microbubbles under shear force. The solid pollutants in the sewage are combined with microbubbles. The buoyancy generated by the imbalance between the air-water combination and the density of water brings the solid pollutants to the water surface, and the scum on the water surface is scraped into the collection tank through a slag scraper. The purified sewage is discharged through the overflow weir.

Vortex air flotation machine working process（Video Description）

Basic structure of vortex concave air flotation system

How vortex air flotation works ？

The working principle of vortex air flotation is that the sewage, after dosing and coagulation, first enters the vortex equipped with The aeration area of the aerator, which is equipped with a patented unique aerator, uses hollow leaves at the bottom to The rapid rotation of the wheel creates a vacuum zone in the water, and the air above the water passes through The hollow pipe is pumped underwater, and the three shear forces generated by the rapid rotation of the impeller at the bottom The air is crushed into microbubbles. The microbubbles organically combine with the solid pollutants in the sewage. Together, they rise to the liquid surface. After reaching the liquid surface, solid contaminants rely on these microbubbles The support floats on the water, and the scum is scraped into the scum collection tank by a scum scraper.

The vortex air flotation machine mainly comprises a box, an aerator, a mud scraping system, etc., and does not require pressure-dissolved air, air compressors, circulation pumps, or other equipment.

Compared with the pressurized dissolved air flotation machine, the vortex concave air flotation machine has the following advantages:

(1) Low investment, low energy consumption, automatic slag discharge without noise, and convenient operation and management.

(2) Compared with traditional domestic pressurized dissolved air flotation systems, equipment such as dissolved air tanks, air compressors, high-pressure water pumps, and underground pipelines are omitted, and the energy consumption is 1/3~1/5 of conventional air flotation.

(3) This system can also remove grease, colloids, and fiber suspensions in sewage, reducing the sewage load such as SS and TP, and can significantly improve the color of the water quality.

Product Advantages

Vortex Air Flotation Advantages

•  Strong adaptability to changes in water volume and quality

•  Low investment, economical, no pressure vessel, air compressor, and circulation pump required

• Low energy consumption, low sludge moisture content, reduced sludge treatment costs

• Reduced odor: The problem of sludge generating odor has been solved.

Dissolved air flotation technology parameter table

Model	Capacity(m3/h)	Nozzle List(DN)				Dimension(mm)
		Inlet	Outlet	Sludge	Vent	L	L1	L2	W	W1	H
RQAF-002	2	DN50	DN50	DN80	DN50	3500	2700	500	800	600	1600
RQAF-003	3	DN50	DN50	DN80	DN50	3600	2800	500	900	600	1600
RQAF-005	5	DN80	DN80	DN80	DN50	3850	3050	500	1000	600	1600
RQAF-010	10	DN100	DN100	DN100	DN80	4500	3700	500	1100	600	1600
RQAF-015	15	DN125	DN125	DN100	DN80	5400	4600	500	1200	600	1600
RQAF-020	20	DN150	DN150	DN100	DN80	5900	5100	600	1300	600	1600
RQAF-030	30	DN150	DN150	DN125	DN80	6700	5700	700	1500	600	1900
RQAF-040	40	DN200	DN200	DN150	DN80	7500	6500	900	1800	600	1900
RQAF-050	50	DN200	DN200	DN150	DN80	8200	7200	1000	2000	600	1900
RQAF-060	60	DN250	DN250	DN150	DN80	8800	7800	1000	2200	600	1900
RQAF-080	80	DN250	DN250	DN200	DN80	9800	8800	1200	2600	600	1900

Model	Capacity(m3/h)	Power
		Aerator(kw)	Skimmer(kw)	chemical reaction tank(kw)
RQAF-002	2	1.5	0.1	0.25	0.12
RQAF-003	3	1.5	0.1	0.25	0.12
RQAF-005	5	1.5	0.1	0.25	0.12
RQAF-010	10	1.5	0.12	0.25	0.12
RQAF-015	15	1.5	0.12	0.25	0.12
RQAF-020	20	2.2	0.12	0.55	0.25
RQAF-030	30	1.5*2	0.12	0.55	0.25
RQAF-040	40	1.5*2	0.12	0.55	0.25
RQAF-050	50	1.5*2	0.12	0.55	0.25
RQAF-060	60	2.2*2	0.12	0.75	0.37
RQAF-080	80	2.2*2	0.12	0.75	0.37

Dissolved air flotation outline drawing

1. Height adjustable overflow weir plate	2. Scraper chain	3. Flotation zone	4. Return area
5. water intake	6. Return pipe	7. Aeration zone	8. Drainage area
9. Overflow weir	10. Outlet

DAF Accessories list

Parts Name	Accessories Pictures	Parts Name	Accessories Pictures
Chain		Float level switch
Releaser		Pressure Gauge
Rubber Scraper		Chain wheel

Product Details

Dissolved air flotation product details

Effectiveness of equipment

Dissolved air flotation Effectiveness of equipment

Cooperation Case

Suma Park North Wastewater Treatment Plant Project

Jiangning District Science Park River Management Project

Product application cases are continuously updated...

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