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Initial Start Up <br /> After all preliminary checks have been performed, the plant should be filled with water <br /> or sewage. When the diffusers in the Aeration Tank are submerged approximately two <br /> feet, proceed to start blower. <br /> 1 . Turn blower(s) H-O-A switch to "ON" position, starting blowers at minimum speed. <br /> Listen for any unusual noises. <br /> 2. Once the blowers have started, rising air bubbles should be noted in the aeration <br /> tank. The entire length of the tank should be observed for even air distribution. <br /> The valves located at the top of each drop pipe assembly should be adjusted, if <br /> necessary, to produce an approximate equal amount of air to each diffuser <br /> assembly. This adjustment can be made with sufficient accuracy by visual <br /> observation of the surface turbulence. <br /> 3. If there is an obvious difference in air distribution, this indicates either a header <br /> assembly is out of level, or partial clogging of one or more diffusers and removal or <br /> inspection of drop is necessary. <br /> 4. When the water level in the plant is high enough that the water begins to overflow <br /> the effluent weir, the weir should be adjusted so the water is overflowing across <br /> the entire length of the weir. Slotted holes or adjustment clips are provided in the <br /> weir plates to permit accurate adjustment of the weir. <br /> 5. The Airlift Pumps in the final settling tank will start operation when the blowers are <br /> started and the regulating valves provided in the air line to the airlift pumps is in <br /> the open position. The airlift pumps must operate continuously and the total <br /> pumping rate should be approximately equal to the incoming raw sewage average <br /> flow rate. The airlift's pumping rate can be managed by regulating the air control <br /> valves. The hopper closest to the clarifier inlet is generally set higher than the <br /> second is. <br /> 6. The Surface Airlift Skimmer will also start operating when the blower is started. <br /> This unit skims floating material from the surface of the final tank and discharges it <br /> back into the aeration tank. This unit is equipped with a riser pipe for adjustment <br /> of the skimmer. It should be adjusted so that the whole surface of the tank moves <br /> toward the airlift. <br /> 7. Check connections of tablet chlorinators and tighten if necessary and check <br /> equipment operation manual for proper operation and dosage rate. When using <br /> tube style chlorinators, and the permit designates you should be chlorinating at <br /> this time fill tubes with tablets and instruct the operator to check tube status and <br /> residual daily until the consumption rate is determined. <br /> Check that the Chlorine Contact Tank is clean and that an adequate supply of chlorine <br /> tablets has been obtained and the operator has a source readily available. <br /> i polo mvsfartup-pi"Clli7lili <br />