Laserfiche WebLink
1..+i �..: L_..' ►..J y r L....; L _r 1,_i L._ L..-.-1 G. ri L._,] [.._.+1 L. -.i L ,J L.,a tj <br />L..A <br />°Levels of soluble sodium salts in dual alkali sludge (filter cake) depend strongly on the degree of <br />cake wash. The highest levels shown reflect single measurements on an unwashed dual alkali filter <br />cake. <br />bLevels of soluble chloride components in sludges are dependent upon the chloride -to -sulfur ratio in <br />the coal. The highest levels shown are single measurements for a western limestone scrubbing sys- <br />tem operating In a closed-loop using cooling tower blowdown for process makeup water. <br />SOURCE: Lunt et al., 1977 <br />TABLE 4.3-8 LEVELS OF CHEMICAL <br />ELUTRIATES PRODUCED <br />SPECIES IN FGD SLUDGE LIQUORS AND <br />FROM WESTERN COALS <br />Range in <br />Median <br />Total No. of <br />Species <br />Liquor (ppm) <br />(Ppm) <br />Observations <br />Antimony <br />0.09-0.22 <br />0.16 <br />2 <br />Arsenic <br /><0.004-0.2 <br />0.009 <br />7 <br />Beryllium <br />0.0006-0.14 <br />0.013 <br />7 <br />Boron <br />8.0 <br />8.0 <br />1 <br />Cadmium <br />0.011-0.044 <br />0.032 <br />7 <br />Calcium <br />240-(),45,000)b <br />720 <br />6 <br />Chromium <br />0.024-0.4 <br />0.08 <br />7 <br />Cobalt <br />0.1-0.1.7 <br />0.14 <br />2 <br />Copper <br />0.002-0.6 <br />0.20 <br />7 <br />r Iron <br />0.42-8.1 <br />4.1 <br />2 <br />a <br />' Lead <br />0.0014-0.37 <br />0.016 <br />7 <br />Manganese <br />0.007-2.5 <br />0.74 <br />6 <br />Mercury <br /><0.01-0.07 <br /><0.01 <br />7 <br />Molybdenum <br />0.91 <br />0.91 <br />1 <br />Nickel <br />O.O05-1.5 <br />0.09 <br />6 <br />Selenium <br /><0.001-2.2 <br />0.14 <br />7 <br />Sodium <br />1,650-(ti9,000)a <br />-- <br />2 <br />Zinc <br />0.028-0.88 <br />0.18 <br />7 <br />Chloride <br />1,700-43,000b <br />-- <br />2 <br />Fluoride <br />0.7-3.0 <br />1.5 <br />3 <br />Sulfate <br />2,100-1.8,500a <br />3,700 <br />7 <br />TDS <br />5,000-95,000b <br />12,000 <br />3 <br />PH <br />2.8-10.2 <br />°Levels of soluble sodium salts in dual alkali sludge (filter cake) depend strongly on the degree of <br />cake wash. The highest levels shown reflect single measurements on an unwashed dual alkali filter <br />cake. <br />bLevels of soluble chloride components in sludges are dependent upon the chloride -to -sulfur ratio in <br />the coal. The highest levels shown are single measurements for a western limestone scrubbing sys- <br />tem operating In a closed-loop using cooling tower blowdown for process makeup water. <br />SOURCE: Lunt et al., 1977 <br />