Air Flotation Machine Paper Mill Wastewater Treatment Plant

Overview:
The pretreated wastewater flows into the small inflated part geared up with a vortex aerator. Throughout the ascent, the sewage is fully blended with the microbubbles created by the aerator, and the aerator passes the air on the area of the air via the ventilation duct. Shift to underwater. The doing work basic principle of the aerator is to use the high-pace rotation of the air diffuser at the bottom of the air conveying pipe to kind a vacuum zone in the water. The air on the liquid surface area is input into the water through the aerator, fills the vacuum, and the microbubbles are created and spirally raised. On the water surface, the oxygen in the air also dissolves into the water.
Because of to the imbalance in density in between the fuel-h2o mixture and the liquid, a vertical upward buoyancy is created, bringing the SS to the drinking water floor. In the course of the float method, microbubbles will adhere to the SS, and the SS will depend on these bubbles to help and sustain the area soon after reaching the h2o surface. The SS floating on the h2o is intermittently taken out by the chain scraper. The scraper moves together the whole area and pushes the SS from the inlet conclude of the float tank to the sludge discharge pipe at the outlet end. There is a horizontal screw propeller in the sludge discharge pipe, and the gathered sludge is despatched to the mud collection tank. The purified sewage flows into the overflow tank and flows to the biochemical treatment method part.
An open up return line extends from the aeration segment along the base of the floatation tank. At the exact same time as the microbubbles are generated, the vortex aerator will type a adverse pressure zone at the base of the tank with the return pipe. This negative pressure will lead to the waste water to movement back again from the base to the aeration zone and then back again to the air float zone. This process makes certain that about 40% of the sewage returns and that the floating part can even now function CZPT h2o.

Positive aspects:
1.Preserve investment
There are no pressure vessels, air compressors, circulation pumps and other gear in the vortex air flotation program, so the tools investment is modest.
The tools covers a little spot and reduces the expense in civil design. The footprint of the CV gear with Q=200m3/h is only 36.15m2.
two. Low running expenses
Because of to the absence of stress vessels, air compressors, circulation pumps and other gear, this technique saves electrical energy. The vitality usage of the QF 200m3/h CAF program is only 5.435KW, whilst the power consumption of the DAF method is as substantial as 65KW.
The CAF method is extremely easy to run. There is no challenging tools at all, so the guide procedure and upkeep operate is small, minimizing labor and maintenance expenses.
three. The treatment method impact is outstanding
The removal rate of petroleum and reliable suspended solids (SS) exceeded 80%.
The removing price of BOD and COD can attain a lot more than sixty%. The dissolved air flotation (DAF) system can only remove about 35% of BOD and COD.
It can advertise the oxidation of sulfides and decrease the sulfur content material in the sewage.
4. Simple to run
This program is really easy to work CZPT intricate products the whole system is made up of only two mechanical elements, in contrast to the DAF technique, which includes pressure vessels, air compressors, circulation pumps and a lot of other necessary products.
Stream Diagram:


 

Air Flotation Machine Paper Mill Wastewater Treatment Plant