AIR DIFFUSING SYSTEM FOR BIOLOGICAL AERATED FILTRATION WITH AIR AND WATER DISCHARGING PORTS CAPABLE OF CONTROLLING AERATION AND BACK WASHING AIR SUPPLIED TO A BIOLOGICAL FILTER, AND A CONTROL METHOD THEREOF

摘要

PURPOSE: An air diffusing system for biological aerated filtration with air and water discharging ports are provided to minimize the wear of valve, to supply the more accurate amount of air, and to stably supply air to the front surface of filtering layer for a short time.;CONSTITUTION: An air diffusing system supplies air to a biological filter, and includes a blower (1), a supplying pipe (2) supplied with air by the blower, an air diffusing device for aeration (5), and a air diffusing device for back washing (6). An air control valve (4) and an air flowing meter (3) are arranged in at least one of the air diffusing device for aeration and the air diffusing device for back washing along the direction of supplying air by the blower in order. A discharging valve (7) for discharging air and water is installed at the tip portion of at least one of the air diffusing device for aeration and the air diffusing device for back washing.;COPYRIGHT KIPO 2013