Component parts: Water input, PDO air intake device, mixing chamber, collecting pipe, sewage disposal, ozone adding device, water output etc. Working system First, water enter from the bottom of Protein Skimmer, “S” shape water stream, water moving up and then roll down to the water outlet; Second, using the PDO device for producing bubble, and it enters into the mixing chamber with water together, liquid and air fully mixing in water when the water is rolling then reaches to the water outlet, water goes out from the bottom, but the not dissolved & suspended particles are gather in the surface of micro-bubble, then enter into the collecting pipe, coming out from the sewage disposal; Third, treated water coming out from the main water outlet, water outlet valve can adjust the liquid level of Protein skimmer. Features 1.Instead the using of Venturi, Booster pump, low power for saving energy. 2.Using the collecting pipe, no need to clean, for saving water. 3. PDO air intake device produces abundance air bubble, for high separate efficiency. 4.Using two ways water stream design, for high air-liquid mixing result, high separate efficiency. 5. Trouble-free design, long service life but free maintenance. Functions 1. Removing organism such as night soil, colloid etc, for reducing the load of biological treatment and ensuring the water quality. 2.Increasing the dissolved oxygen in water, for improving the biological treatment efficiency. 3. Removing the harmful air in water, stabilize the PH in water. 4. Mixing ozone in water also has the function of sterilization, disinfect ion and remove algae in water. Appliance 1.Seafood cultivating factory 2.Seawater hatcheries 3.Oceanopolis, aquarium etc 4.Swimming pool water treatment 5. Sewage water treatment, and the lines used for ozone mixing in water Specifications: ModelWater flow rateSizeCH-FPS-1010 M3/Hr450×450×1550 mmCH- FPS -1515 M3/Hr520×520×1800 mmCH- FPS -2020 M3/Hr620×620×1800 mmCH- FPS -3030 M3/Hr700×700×2100 mmCH- FPS -4040 M3/Hr700×700×2400mmCH FPS -6060 M3/Hr850×850×2400 mmCH- FPS -8080 M3/Hr920×920×3000 mmCH- FPS -100100 M3/Hr1050×1050×3000 mmCH- FPS -150150 M3/Hr1250×1250×3100 mmCH- FPS -160160 M3/Hr1300×1300×3100 mmCH- FPS -200200 M3/Hr1350×1350×3500 mm