Engineering and Contracting . tes for the water to pass through themixing basin. There will be six sedimentationbasins, each of 3,650,000 gals, capacity, inwhich the sediment and chemical precipitate-; TABLE I.—AVERAGE ANALYSIS OF LAKEERIE WATER, O. Symbol. Calcium carbonate CaCO, Magnesium carbonate MgCOj Magnesium sulphate MgSOi Magnesium chlorid MgClj Iron and aluminum (probably colloidal) Fe & Al Silicon (probably colloidal) .... Si Sodium chlorid NaCI Free carbonic acid COj Half-Bound carbonic acid HCO3 Hardness (total) 110 Alkal
Engineering and Contracting . tes for the water to pass through themixing basin. There will be six sedimentationbasins, each of 3,650,000 gals, capacity, inwhich the sediment and chemical precipitate-; TABLE I.—AVERAGE ANALYSIS OF LAKEERIE WATER, O. Symbol. Calcium carbonate CaCO, Magnesium carbonate MgCOj Magnesium sulphate MgSOi Magnesium chlorid MgClj Iron and aluminum (probably colloidal) Fe & Al Silicon (probably colloidal) .... Si Sodium chlorid NaCI Free carbonic acid COj Half-Bound carbonic acid HCO3 Hardness (total) 110 Alkalinity (total to Erythrosine) 100 is m charge of the filtration work. Mr. Jaegerhas personal charge of the new tunnel andintake. will settle out before the water passes to thefilters. This gives 3 hours sedimentation atfull capacity of plant. The chemical house will be designed tohandle lime and coagulant received in bulkfrom cars on an adjacent siding. The chem-icals will be raised by conveyors to air tight Crib NO-3 WW. •K- -/ ^*7* 01 ^^^ FairmcnT Reserve61, Sals -/ V-
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