Dissolved Air Floatation Machine Shandong Company

Dissolved Air Floatation Machine Shandong Companyworking principle

The working principle of the dissolved air flotation machine is that the wastewater after the dosing reaction enters the mixing zone of the flotation machine, mixes with the released dissolved air water, and then enters the flotation zone. The dissolved air and water are released under reduced pressure in the air flotation tank, and the air dissolved in the water precipitates in the form of micrometer sized bubbles. Bubbles combine with suspended solids in wastewater due to their high surface area adsorption capacity, which means that the proportion of suspended solids in wastewater decreases until they float on the water surface and form a large amount of floating debris. The lower level clear water flows towards the clear water through the collection device. After the floating slag on the surface of the air flotation tank accumulates to a certain thickness, it is scraped into the floating slag tank of the air flotation machine by a scraper and discharged, achieving the effect of removing impurities and purifying water.

Dissolved Air Floatation Machine Shandong CompanyPerformance characteristics:

(1) Large processing capacity, high efficiency, small footprint, and wide applicability.
(2) The process flow and equipment structure are simple, and easy to use and maintain.
(3) It can eliminate sludge swelling.
(4) The aeration in the air flotation process has a significant effect on removing surfactants and odors from the water, and due to the increased dissolved oxygen in the water, it provides favorable conditions for subsequent treatment.
(5) For low temperature, low turbidity, and algae rich water sources, air flotation can achieve good results.

Key points for use

Equipment installation and debugging:

Before installation, the foundation must be compacted and elevated with concrete mortar by 100-150mm. It can also be installed overhead, but the foundation must be able to bear the weight of the equipment during operation.

After the equipment is in place, it needs to be adjusted horizontally and a cleaning drain should be set up.

Before debugging, all debris in the water tank should be cleaned, and lubrication parts such as water pumps and air compressors that require lubrication should be lubricated with oil. After connecting the power, check whether the equipment rotation is normal.

Running operation:

Start the dissolved water pump and feed water into the dissolved gas tank. Adjust the water level to about 1/3 of the dissolved gas tank level gauge. At this point, the pressure in the dissolved gas tank should reach 0.4 MPa.

Adjust the dosage, inflow, and dissolved air volume according to changes in effluent quality to ensure effluent quality.

According to the generation of floating slag, control the outlet gate plate, adjust the floating slag level to meet the sludge discharge requirements of the scraper, and start the scraper to scrape the slag.

Shutdown operation:

When shutting down, the sewage control valve should be closed first, then the sewage pump should be turned off, the foam should be scraped off, the foam scraper should be stopped, then the clean water valve should be opened, tap water should be introduced and run for 30 minutes, the dissolved air outlet and inlet control valve should be closed, and finally the clean water pump should be stopped.