Five. Releasing water through the ph 5-8 and the tank for aeration. Conducted every 2 h, with aeration pumps for aeration and / or fill with microbes. (If needed, if the effluent standard bod not by law) for 12 hours
5. leave the water at PH 5 through 8-cylinder, for more do more every 2 hrs with a pump for filling the air and/or additional microorganisms (if necessary if the BOD values are not based on a legal standard leaving water) for a period of 12 hours.
5. Let the water pass through the PH 5-8, and then to fill the tank for air to fill the air every 2 hours with an air pump for filling and/or filled with microbes (if necessary if the value is not in accordance with criteria BOD drain in accordance with the law) at 12 hours.