Recycling Treated Municipal Wastewater for Industrial Water Use

Wastewater Recycling Sampling Program Summary Results 1
Constituent Unit Limit 2 Limit 3
Mean St Dev 4
Min Max Number Mean St Dev Min Max Number Mean St Dev Min Max Number Mean St Dev Min Max Number
Alkalinity (as CaCO3) mg/L 20-350 40 293 10 274 311 24 246 20 179 274 27 157 15 141 202 29 184 14 169 242 25
Aluminum (Al) mg/L 0.1 0.01 0.022 0.008 0.012 0.051 24 0.023 0.006 0.013 0.034 27 0.030 0.004 0.020 0.037 29 0.024 0.002 0.018 0.028 25
Ammonia (NH3) mg/L 24 0.1 0.182 0.068 0.060 0.330 37 0.2 0.3 0.1 2.0 43 0.216 0.338 0.020 2.320 61 0.117 0.110 0.030 0.620 40
Bicarbonate (HCO 3)
mg/L as
CaCO 3 25-200 48 300 8 272 309 19 256 31 214 367 19 157 20 84 185 19 182 6 174 193 19
Calcium (Ca) mg/L 50 0.01 93.2 3.8 87.3 101.0 24 82.2 4.5 65.4 88.0 27 72.2 4.4 67.2 80.2 29 62.9 5.3 58.5 86.6 25
Carbonaceous Biochemical
Oxygen Demand (CBOD) mg/L * * 3.0 0.0 3.0 3.0 30 3.2 0.9 3.0 8.0 35 3.2 0.5 3.0 5.0 61 3.3 1.4 3.0 11.0 33
Chemical Oxygen Demand (COD) mg/L * 1 34.1 5.1 21.0 48.0 37 37.4 5.0 24.0 52.0 39 32.2 3.4 22.0 39.0 61 34.1 4.4 28.0 48.0 40
Chloride (Cl)
mg/L 500 * 387 34 280 426 24 387 28 295 419 24 239 11 208 262 29 285 27 261 402 24
Color * * 51 7 36 61 12 58 7 47 77 12 45 8 33 62 12 61 13 41 78 12
Copper (Cu) mg/L * * - - - - - - - - - - 5.06 0.45 4.5 5.7 5 - - - - -
Dissolved Oxygen (DO) mg/L * 0.007 8.63 0.43 7.50 10.40 50 8.6 0.5 7.5 10.1 54 5.8 0.9 3.0 8.5 61 8.88 0.55 8.01 10.02 54
E. Coli No./100ml * * 731 572 96 2092 26 7 5 3 22 14 283 349 1 3973 22 57 120 4 548 22
Fecal Coliform No./100ml * * 75 66 7 260 36 15 17 2 54 29 68 80 2 500 54 33 55 2 290 38
Hardness (as CaCO 3)
mg/L as
CaCO 3
130-
650 0.07 351 17 324 384 24 293 16 240 312 27 258 15 242 290 29 243 14 228 302 25
Iron (Fe) mg/L 0.5 0.05 0.076 0.015 0.048 0.100 24 0.105 0.023 0.074 0.192 27 0.068 0.018 0.049 0.150 29 0.133 0.043 0.084 0.256 25
Magnesium (Mg) mg/L * 0.01 35.9 1.8 30.1 39.3 24 27.6 1.3 24.8 29.4 27 24.0 0.6 22.7 25.0 29 25.4 1.2 23.5 29.8 25
Manganese (Mn) mg/L 0.5 0.01 0.015 0.004 0.009 0.027 24 0.038 0.023 0.008 0.097 27 0.016 0.003 0.010 0.023 29 0.035 0.024 0.011 0.094 25
Nitrate (NO 3) mg/L * * 10.97 0.83 8.99 12.6 37 15.8 2.5 11.5 20.3 24 16.4 1.8 11.9 19.0 45 15.9 1.4 14.1 19.2 40
Orthophosphate (PO 4) mg/L * * 0.406 0.289 0.167 1.370 24 0.057 0.125 0.006 0.614 27 0.259 0.197 0.093 0.810 29 0.968 0.801 0.019 3.050 25
Phosphorus (total: TP) mg/L 1 * 0.485 0.164 0.290 0.860 37 0.340 0.109 0.190 0.710 28 0.457 0.246 0.200 1.500 61 1.500 0.855 0.560 3.700 40
pH * * 7.3 0.2 7.0 7.8 50 7.0 0.1 6.6 7.4 54 7.0 0.1 6.7 7.3 59 7.1 0.1 6.5 7.3 54
Silicondioxide (SiO 2) or Silica mg/L 50 0.7 22 2 13 23 24 19 1 16 20 27 17 0 16 18 29 18 2 16 22 25
Sulfate (SO 4) mg/L 200 * 51.1 9.2 39.7 83.1 24 39.8 4.5 23.8 47.1 26 74.7 6.7 63.4 93.8 29 374.3 200.3 39.7 724.2 25
Total Coliform * * 3,496 1,150 2,450 4,920 22 499 721 104 2,450 10 3,798 2,655 1,300 10,000 17 2,491 2,175 106 8,812 18
Total Dissolved Solids (TDS) mg/L 500 200 1,097 80 875 1,260 24 1,130 166 961 1,920 27 805 37 716 907 29 1,326 299 900 1,960 25
Total Organic Carbon (TOC) mg/L * * 8.1 0.7 7.0 10.0 23 9.4 1.0 7.6 11.8 27 8.0 0.6 7.0 9.2 29 8.4 0.7 7.3 9.6 25
Total Suspended Solids (TSS) mg/L 100 0.5 1.7 1.0 1.0 6.0 37 3 2 1 15 43 2.4 0.8 1.0 4.0 61 3.1 1.2 1.0 7.0 40
Turbidity * * 2 0 1 3 24 4 1 1 5 27 2 0 1 3 29 3 1 2 5 25
1
Based on Fall 2006 and Spring 2007 sampling periods; see other Exhibits for daily data
2
Cooling Water (USEPA, 2004); variable range related to amount of recycling and materials of construction; high range is typically maximum in blowdown/final water
3 Industrial Boiler Feed Water (high pressure) (Table 2-8, Technical Memorandum "Recycling Treated Wastewater for Industrial Water Use in Minneosta: Implementation Issues and Customer Inventory)
4 St Dev = one standard deviation
Blue Lake Empire Metro
Reuse Sampling Data Summary_0707-for TM2.xls, Fall 2006 & Spring 2007_forExhA Page 1 of 1 7/7/2007 1:28 PM
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