Laserfiche WebLink
Biological Analysis <br /> It is impossible to control the aeration tank by visual observation alone. There is a biological <br /> process associated with the conversion process in the aeration tank that will require a different <br /> method for monitoring the process. <br /> The dissolved and suspended pollutants enter the aeration tank in the form of carbon, quantified <br /> as CBOD, and in the form of nitrogen as ammonia. These pollutants serve as a "food" source for <br /> the aerobic bacteria in the aeration tank.The bacteria "eat"the pollutants and then convert them <br /> into more bacteria. <br /> Preliminary Effluent Aeration Tank Effluent Clarifier Effluent <br /> Photograph curtesy of Class A training Manual Ohio <br /> Pollutant Conversion Process <br /> There are several tests that should be performed routinely to determine the health of the <br /> biomass in the tank. Refer to the Standard Operating Proceedures for addtional information. <br /> • Dissolved Oxygen Testing: Dissolved Oxygen (DO) testing measures how much oxygen is <br /> available to the bacteria in the tank. <br /> o Tests are taken each weekday at 7 set locations which are marked on the handrails <br /> of the cat walk. <br /> o Operator should hold the probe about 2 feet (1 arms length) out from the rail and <br /> about 2 feet under the surface. <br />