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'5827 Happy Hollow Rd Suitt; 1-B <br /> Wfortl 014 4,5150-1830 <br /> Tel: (513) 831-1165, Fax- 13) 965-481-7 <br /> Systems, nn- C m.il: Polconsys@-aol.com <br /> ��-ti�.1'cal<.�titzr�t.�`4�ntrr>1S}-�terrr.;;c�m <br /> Daily Operation Observations and Testing <br /> In addition to any daily mechanical maintenance of the treatment plant, daily <br /> observations and tests of the degree of treatment being given to the process flow <br /> effluent should be made. A report should be completed not less than once every week, <br /> and or as directed by local authorities. A record of the pH values of the Equalization <br /> Tank effluent should be kept to assure compliance with local authorities as well as <br /> proper operation of the treatment system. <br /> By visual observation of a few key indicators, and the use of a few simple tests an <br /> operator can usually determine if the plant is functioning properly and providing good <br /> treatment. Close observation should be given to the Aeration tank, the settling tanks <br /> and the effluent. <br /> The aeration tank of a properly functioning plant will have little or no foam or floating <br /> material on the surface. If the color is black or gray, the bacteria (or activated sludge <br /> floc) are either not receiving enough air or they are receiving too much sludge or a <br /> waste that is toxic to them. Foaming may occur in this tank when the plant is first put <br /> into operation and there is not enough sludge, or when the plant is over-aerated. <br /> I. ACTIVATED SLUDGE VOLUME TEST <br /> One test that gives an indication of the degree of treatment being received is the sludge <br /> solids volume test. This test is a measure of the amount of activated sludge present to <br /> digest the solids and the condition of this sludge. <br /> The test is largely a matter of experience and becomes a more useful tool after many <br /> samples have been observed. A sample is collected from the aeration tank in a one <br /> liter graduated cylinder while the plant is being aerated, and then allowed to stand <br /> perfectly still for thirty minutes. <br /> If a set of Imhoff cones or graduated cylinders is not available to perform the test in the <br /> standard manner, relatively satisfactory test vessels may be made from any tall straight- <br /> sided clear glass containers of at least one quart volume, such as a quart fruit jar. A <br /> uniformly divided scale from 1 to 10 (0% to 100%) should be firmly affixed to the side of <br /> each container and coated with wax or shellac to prevent its being readily washed off. <br /> - € - pcs/o&-n-observc't test 1-5 <br />