Laserfiche WebLink
Operation Test <br /> Generally, the Regulatory Agency in whose area of jurisdiction the sewage treatment <br /> plant is located will specify the laboratory tests the operator should make. With minor <br /> exceptions, these tests, when required, should be performed in accordance with the <br /> latest edition of "Standard Methods for Analysis of Water and Waste Water." The <br /> Sludge Settling Test is an absolute necessity for control and for proper operation of the <br /> plant. This simple thirty (30) minute settling test is designed for quick and easy <br /> indication of the condition of the plant and where a problem may be developing. The <br /> only equipment required is two (2) 1000 MI graduated cylinders or if these are not <br /> available, two (2) quart cylinders or jars. A uniformly divided scale from 0 to 10 (0% to <br /> 100%) should be firmly affixed to the side of each container and coated with shellac to <br /> prevent its being readily washed away. Label one container "Aeration Tank" or "Mixed <br /> Liquid" and the other "Clarifier Tank" or "Effluent." To perform the test, fill one container <br /> from the Aeration Tank and the other container from the effluent of the Final Tank. Both <br /> jars are to set still for thirty (30) minutes, so that the results can be interpreted. This test <br /> is a measure of the amount of activated sludge present to digest the sewage as well as <br /> the condition of this sludge. <br /> ..............__._.............................. <br /> s <br /> i <br /> i <br /> Typical Sludge Jar Test <br /> pcsloX r;v5txriiip prelirrin trt-1-6 <br />