Super dissolved air flotation machine

>Super dissolved air flotation machine 1. A series of super dissolved air flotation sewage treatment equipment. It applies a new dissolved air mechanism and designs a novel and unique dissolved air system. Its excellent operating performance and excellent treatment effect have been used in industrial wastewater treatment. fully reflected in it.
2. Structure and Principle
The series of super dissolved air flotation sewage treatment machines are made of steel. Its working principle is that air is sent into the pressure dissolved air tank through a pump and is forced to dissolve in the water under force. In the case of sudden release, the air dissolved in the water precipitates, forming a large number of dense micro-bubble groups, which are adsorbed on the suspended solids during the slow rising process and the density decreases and floats to achieve the purpose of removing air and air.
The structure of the series of super dissolved air air flotation sewage treatment machines is mainly composed of the following parts
Air flotation machine
The circular steel structure is the main body and core of the water treatment machine. There are releasers, distributors, sludge pipes, outlet pipes, sludge tanks, scrapers and transmission systems inside. The releaser is placed in the center of the air flotation machine and is a key component for generating microbubbles. The dissolved gas water from the dissolved gas tank is fully mixed with the wastewater here and is suddenly released, resulting in violent agitation and vortex, forming microbubbles with a diameter of approximately , thereby attaching to the flocs in the wastewater, thereby reducing the rising specific gravity of the flocs, and the clean water is completely separated and evenly distributed. The tapered structure is connected to the releaser. Its main function is to separate the separated clean water and sludge. Evenly distributed in the tank, the outlet pipes are evenly distributed in the lower part of the tank, and are connected to the upper part of the tank through a vertical pipe to overflow. There is no water level adjustment handle at the overflow port, which is convenient for adjusting the water level in the tank. The sludge pipe is installed at the bottom of the tank. It is used to discharge sediment. There is no sludge tank in the upper part of the tank. There is a scraper on the tank. The scraper rotates continuously to scrape the floating sludge into the sludge tank and flow to the sludge pool.
, dissolved air system
The dissolved air system mainly consists of a dissolved air tank, an air storage tank, an air compressor, and a high-pressure pump. The dissolved air tank is the most critical part of the system, and its function is to achieve water and Full contact with air accelerates air dissolution. It is a sealed pressure-resistant steel tank with baffles and spacers designed inside, which can accelerate the dispersion and mass transfer process of gas and water and improve the efficiency of dissolved gas.
, Pharmacy tank
Steel round tanks are used to dissolve and store pharmaceutical liquids. Two of them are dissolving tanks with stirring devices, and the other two are pharmaceutical storage tanks. The volume is matched with the processing capacity. .
3. Process flow description
The wastewater passes through the grille, blocking larger suspended solids, and enters the sedimentation tank, where wastewater of different properties is mixed and homogenized, and heavy impurities are precipitated to prevent It reduces the fluctuation of water quality and ensures the stable operation of wastewater treatment. Since the wastewater in the pond contains a certain amount of lost fiber, this part of fine fiber is the main source of wastewater. Therefore, recycling it through the microfiltration machine not only recovers the fiber , while greatly reducing the suspended solids in the wastewater, reducing the processing load for the next process of wastewater air flotation. Coagulation chemicals are added to the conditioning tank to allow the wastewater to be initially separated, flocculated, and precipitated, and then sent to the flotation machine through the sewage pump. Under the action of the flocculant, larger flocs are formed. Due to the capture of a large number of microbubbles and the significant reduction in the specific gravity of the flocs, they continue to float. The clean water is completely separated, flows away from the overflow outlet, and enters the aerobic fast filter, where the clean water is further oxygenated and filtered and adsorbed through the filter material. The color and some sediments are removed, and then the clean water enters the sedimentation and clarification tank, where it is left to settle and clarify. Finally, it flows to the storage tank for reuse or discharge.
The sludge that floats to the top in the air flotation machine is scraped into the sludge tank through the scraper and flows to the sludge drying tank. The sludge is pumped into the sludge filter press for pressure filtration to form The filter cake is transported out for landfill, or mixed with coal and burned. The sewage after filtering returns to the sedimentation tank. If you continue to invest in a cardboard machine, the sludge can also be directly used to produce high-grade cardboard, which not only eliminates secondary pollution, but also creates great economic benefits.