Dissolved Air Flotation Machine for Sewage And Wastewater Treatment Use

   Dissolved air flotation machine is a kind of solid-liquid separation equipment commonly used in the sewage treatment industry, which can effectively remove suspended solids, grease and glue in sewage. good helper.

1 Scope of application of dissolved air flotation machine:

   It is used to remove suspended solids, grease and various colloidal substances in sewage, such as: sewage treatment of petrochemical, coal mine, papermaking, printing and dyeing, slaughtering, brewing and other industrial enterprises; used to recover useful substances, such as: fine fibers in papermaking white water collection.

2 The working principle of the dissolved air flotation machine

   The dissolved gas tank produces dissolved gas water, and the dissolved gas water is decompressed and released into the water to be treated through the releaser. The air dissolved in the water is released from the water to form tiny fine bubbles of 20-40um, which combine with the suspended matter in the sewage to make the suspended matter less specific than water, and gradually float to the water surface to form scum. There is a scraper system on the water surface to scrape the scum into the sludge tank. The clean water enters the clean water tank from the lower part through the overflow tank.

3. Scope of application

   The equipment is used in papermaking, food, printing and dyeing, life, steel, thermal power plants and other fields, and its treatment effect is better than that of special equipment in this industry. The effect of grade products, and the current special processing equipment in the starch industry can only reach 30%. It is used to separate naphthalene flakes in coking cooling water, and to separate various tars in coking mixed water. It is used for solvent extraction and dephenolization to recover solvent oil. It is used for railway and mechanical processing wastewater to remove oil pollution, COD, SS, etc., even without flocculants. The ideal effect can also be achieved.

4 Features of the dissolved air flotation machine

   1. The dissolved air tank produces small bubbles with a particle size of 20-40um, and the flocs are firmly adhered, which can achieve a good air flotation effect; 2. The amount of flocculant used is small, and the cost is reduced; 3. The operating procedures are easy to grasp, the water quality and quantity are easy to control, and the management is simple.