17-21 A new membrane softening system is being proposed. The water quality is as shown in...

 

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17-21 A new membrane softening system is being proposed. The water quality is as shown in the table below. Using RO manufacturer design software (provided by the instructor or obtained from a membrane manufacturer website), develop the process design criteria for the plant. The required water demand is 14,200 m³/d and the finished-water hardness should be between 50 and 75 mg/L as CaCO3. Constituent Ammonia Barium Calcium Magnesium Manganese Sodium Strontium pH SDI Concentration, mg/L 1.5 0.0 100 10 0.002 60 1.0 7.0 <1 min-1 Constituent Bicarbonate Bromide Carbonate Chloride Fluoride Phosphate Sulfate Silica Temperature Concentration, mg/L 135.1 0.0 0.11 98.8 0.5 0.5 167.6 15.0 20°C 17-21 A new membrane softening system is being proposed. The water quality is as shown in the table below. Using RO manufacturer design software (provided by the instructor or obtained from a membrane manufacturer website), develop the process design criteria for the plant. The required water demand is 14,200 m³/d and the finished-water hardness should be between 50 and 75 mg/L as CaCO3. Constituent Ammonia Barium Calcium Magnesium Manganese Sodium Strontium pH SDI Concentration, mg/L 1.5 0.0 100 10 0.002 60 1.0 7.0 <1 min-1 Constituent Bicarbonate Bromide Carbonate Chloride Fluoride Phosphate Sulfate Silica Temperature Concentration, mg/L 135.1 0.0 0.11 98.8 0.5 0.5 167.6 15.0 20°C

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The following design criteria should be met The permeate flow rate should be 14200 m3d The concentra... View the full answer