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• <br />• <br />u <br />Table 4-1 Summary of Analytical Results for Nanofilration Pilot Testing <br />Membrane Performance <br />62.5 Percent Recovery -Membrane Set Three <br />Constituent Feed Concentrate Permeate % Rejection <br /> (mg/I.) (mg/L) <br />TDS 1307 3447 12 99 <br />Alkalinity, as CaCO, 208 516 6 97 <br />Calcium 331 797 1.5 99.5 <br />Manganese, total 5.02 12.8 0.044 99 <br />Manganese, dissolved 5.01 11.9 0.043 99.1 <br />Sulfate 598 1350 20 97 <br />Batch Precipitation Results <br />Test A (concentrate from 62.5 percent recovery run) <br />Constituent Feed Supernate -1 hour Supernate - 2 hour <br /> (mt;~-) (mgt) mgt) <br />TDS 3063 1779 884 <br />Alkalinity as CaCO, 302 249 333 <br />Calcium 765 228 147 <br />Manganese, dissolved 10.5 <0.01 <0.01 <br />Sulfate 1915 1001 401 <br />Aluminum <0.003 <0.003 0.022 <br />Reagents Added: Lime 158 g, CA-1 318 g, 40 gal conc., 1.0 g lime/L conc., 2.1 g CA-I/L conc. <br />Batch Precipitation Results <br />Test B (concentrate from 62.5 percent recovery run) <br />Constituent Feed Supernate - 1 hour Supernate - 2 hour <br /> (mgt) (mP,R-) mP~-) <br />TDS 3091 1185 1307 <br />Alkalinity as CaCO3 308 599 250 <br />Calcium 765 143 211 <br />Manganese, dissolved 10.5 <0.01 <0.01 <br />Sulfate 1953 288 236 <br />Aluminum <0.003 <0.003 <0.003 <br />Reagents Added: Lime 162.5 g, CA-1 530 g, 40 gal conc., 1.1 g lime/L conc., 3.5 g CA-12 conc. <br />Ba!!!e Mountain Resource, Inc. <br />p:1/002674reporlslmmthrplVrl6wvmngtmarch.doc 50 <br />Fiarch 21. 1999 <br />