Principle :
    Air Floating treatment is one of the latest wastewater treatment techniques in the world.
    The process is to introduce a lot of bubbles into sewage, which stick to suspended solids (SS) by surface tension to form floating masses with specific gravity of less than 1. According to buoyancy principle, the masses float to water surface. Thus the contamination can be removed.
   The design defects of traditional floating technique lead to Iow efficiency, long retention period (40---60min) in floating pond, large-space equipment and Iow decontamination rate. So this type of floating treatment is out of date.
    The Super-efficient Shallow Ion- and Air-floating Purifier breaks through the traditional technique. Dynamic inflow and static outflow applied in new technique is substituted for traditional dynamic outflow and static inflow. According to "Zero speed", the masses float to water surface vertically in a relative static environment. The floating distance reduces to minimum and this process will not be affected by speed-varying flow. Because the Purifier offers many advantages, such as a merely 450mm deep pond, a 3~5min retention period only, a set of much small-size equipment, uniform-distribution bubbles, no floating dead comer and little disturbance by skimming machine, the decontamination rate has been increased greatly.
  The birth of CQJ Type Super-efficient Shallow Ion- and Air-floating Purifier exhibits a significant advancement in airfloating water purification technique. The product has made great improvement by employing our patented special high-efficient gas-dissolving equipment and balanced energy dissipating system and got the result that gas-dissolving rate reaches its maximum and no concentration gradient presents.Measured and calculated from Stocks Formula, the average micro-bubble diameter of CQJ type is 1pm, which is at least reduced by 20 times comparing with 20-50!μm of domestic and foreign equipment. It means that the bubbles' total superficial area in the former increases 400 times in relation to the latter one when the same quantity of dissolved gas is
considered In far_t. since gas-dissoving rate increases, the bubbles' total suoerficial area or bubble density of new equipment becomes thousands of times more than that of traditional equipment. Foreign researcher proves: According to statistical mechanics, when bubble's diameter is less than a certain value, the surrounding heat-motioning water molecules will strike on it to lose balance, which makes the bubble participate in Brown motion. Thus the oxygen molecules in bubble will diffuse into sewage quickly. Such aeration improves efficiency of the treatment. Meanwhile, dissolved contaminants in sewage are being ionized, which is a reversible reaction in dynamic balance. Polar water molecule and organic SS surrounded by double electric layers will promote ionization. As a result, highdensity tiny bubbles will accelerate generation of chemical compound in this reversible reaction. Because of the advantages above-mentioned and some unknown mechanism, model CQJ super-efficient shallow ion floating purifier not only reduces SS by 99.8%, but dissolved COD by 45-73%, which has been verified by Shanghai Designing Institute of Ministry of Light Industry and some other authority institute. CQJ type super-efficient shallow ion- and air-floating purifier is appraised as the most advanced ionfloating purifier in the world by experts.
    CQJ type has another advantage. The high-density micro-bubbles can even capture SS very tiny, so we don't need to add a lot of flocculent into the pond or even any for collecting SS as alum ustum, which lowers the cost greatly.