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Home My WebLink AboutNC0037834_HWA.AT.Elledge.2022.AppUpdated 04 05 2022_20220405Headworks Analysis Spreadsheet POTW Name: Ell edge Date: 9/6/2022 POTW NPDES # => NCO037834 POTW Sludge Permit # => WQ0029804 POTW NPDES Permitted Flow(MGD)= 30.00 POTW Average Flow(MGD)= 19.57 Uncontrollable Flow(M GD)= 14.53 7Q10 Stream Flow(MGD)= 9.69 Stream Classification = C Class of Sludge generated (A, or B) A Sludgeto Digestor Flow(MGD)= 0.234 Sludgeto Disposal Flow(MGD)= 0.1001 %SolidstoDisposal= 91 SI udge Site Area(acres)= Sludge Ste Life(yrs)= Age of Sludge Site(yrs)= Pass -Through Loading Calculations 2022 Elledge Headwork's Analysis BOO TS: NH', 2018 Annual Avg. Max. Monthl m I mg1I 379 373 354 342 26 28 WWTF Influent BOD (rng/I) WWTF Influent TSS (mg/1) WWTF Influent NH3 (m9/1 WWTF Influent Total N(mg/I) WWTF I nfl uent Total P (rrg/I ) Design Values Through calc. for different POTW I use Design flows Criteria verape Flow l Permitted Flow Loadinq 531 1500.0 1 978.5 X 39 1 80.0 1 52.2 1 X Pollutant NPDESLIMIT (mgll) Plant Removal Rate(%) Removal rate Source NPDESLoading (Ibslday) Stream Standard (m911) Stream Standard Source Standard Loading (lbs/day) Design Criteria Loading (Ibs/day) Pa%Thru Loading (lbs/day) Minimum Pass Thru Bass BOD 21 98 DMR/LTMP 171,374 142,364 142,364 Design TSS 30 98 DMR/LTMP 244,821 132,856 132,856 Design Ammonia 1.2 98.5 DMR/LTMP 13,057 9,758 9,758 Design Arsenic 45 Literature 0.01 WS 4.4369 4.43691 Stream Std Cadmium 67 Literature 0.002 Aquatic Life 1.4790 1.4790 Stream Std Chromium 82 Literature 0.05 Aquatic Life 67.7857 67.7857 Stream Std Copper 89.8 DMR/LTMP Aquatic Life Cyanide 69 Literature 0.005 Aquatic Life 3.9359 3.9359 Stream Std Lead 93 DM R/LTM P 0.025 Aquatic Life 87.1530 87.1530 Stream Std Mercury 98 DMR/LTMP 0.000012 Aquatic Life 0.14642 0.14642 Stream Std Molybdenum 33 Literature WS Nickel 42 Literature 0.025 WS 10.5185 10.5185 Stream Std Selenium 50 Literature 0.005 Aquatic Life 2.4403 2.4403 Stream Std Silver 75 Literature 0.00006 Aquatic Life 0.0586 0.0586 Stream Std Zinc 69 DMR/LTMP 0.05 Aquatic Life 39.35941 39.3594 Stream Std Fluoride 4.72 1 DMR/LTMP 1 1 1.81 Aquatic Life 461.01081 1 461.011 IStream Std 2022 Elledge Headwork's Analysis Average Influent NH3(mg/1) 23.58 Average Anaerobic Digester NH3 (mg/1) 49.37 Inhibition Loading Calculations Pollutant Primary Removal Rate N Primary Removal Rate Source A.S./Nit,/T.F. Inhibition Concentration (mg/I) A.S./NitJT.F. Inhibition Concentration Source A.S./Nit,/T.F. Inhibition Loading (lbssday) Digestor Inhibition Concentration (mgll) Digestor Inhibition Conc. Source Digestor Inhibition Loading (Ibsfday) Minimum Inhibition Loading (Ibsfday) Minimum Inhibition Loading Source BOD TSS Ammonia 480 EPA A.S. 78342.6240 1500 Literature 116930.77 78342.62 Act. Sludge Arsenic 0.1 EPA A.S. 16.3214 1.6 Literature 6.9389 6.9389 Digester Cadmium 15 Literature 1 EPA A.S. 192.0162 20 Literature 58.2555 58.2555 Digester Chromium 27 Literature 0.394 NC Nit. 88.0907 130 Literature 309.3937 88.0907 Nitrification Copper 22 Literature 0.48 NC Nit. 100.4393 40 Literature 86.9292 86.9292 Act. Sludge Cyanide 27 Literature 0.1 EPA A.S. 22.3581 4 Literature 11.3134 11.3134 Digester Lead 57 Literature 0.5 EPA Nit. 189.7835 3401 Literature 713.4735 189.7835 Nitrification Mercury 10 Literature 0.1 EPA A.S. 18.1349 18.1349 Act. Sludge Molybdenum Nickel 14 Literature 0.25 EPA Nit. 47.4459 10 Literature 46.4657 46.4657 Nitrification Selenium Silver 20 Literature 0.25 EPA A.S. 51.0043 13 Literature 33.8270 33.8270 Act. Sludge Zinc 271 Literature 1 0.8251 LTMP 1 184.4540 400 Literature 1131.33911 184.4540 Act. Sludge Fluoride 2022 Elledge Headwork's Analysis SI udoe L oadi na Calculations Pollutant SludgeCeling Concentration Limit(mgtkg) 3ludgeCeiling Load (lbs(day) Sludge Ceiling Load - HASLCaic.- (lbs(day) Cumulative3ludge Rate Limit (lbsf(acre life)) Cumulative Sludge Loading (lbslday) ClaImitsMnthly Limi[s Momhly AvaageRateLimit (mgncg) SludgeCImA Clean 9udge Limi[s MomhlyAvg. Loading(Ibsdday) ClassA Limits Mon.Avg.Load._- HASLCaIc.- (lbs(day) Minimum Sludge Loading (Ibslday) Minimum Sludge Loading Sorce BOD TSS Ammonia Arsenic 1 75 126.6165 36 41 69.2170 69.2170 Clean 9ud e Cadmium 85 96.3797 34 39 44.2213 44.2213 Clean Sludge Chromium No Criteria Copper 4300 3637.7566 1338 1500 1268.9849 1268.9849 Clean Sludge Cyanide No Criteria Lead 840 686.1797 267 300 245.0642 245.0642 Clean Sludge M ercury 57 44.1866 15 17 13.1785 13.1785 Clean Slud e Molybdenum 75 172.6589 1 172.6589 Sl udge Cei I i ng Nickel 1 420 759.6989 374 420 759.6989 759.6989 Slud eCeilin Selenium 100 151.9398 89 100 151.9398 151.9398 Sl udge Cei I i ng Silver No Criteria Zinc 7500 8257.5972 2498 2800 3082.8363 3082.8363 Clean Sludge Fluoride 2022 Elledge Headwork's Analysis M aximum Allowable Headworks Loading Calculations MInimumPass Through Loading Ibslday PassThrough Source Minimum Inhibition Loading Ibslday Minimum Inhibition Loading Source Minimum Sludge Loading Ibslday Minimum Sludge Loading Sorce BOD 142364 Design TSS 132856 Design Ammonia 9758 Design 78342.6240 Act. Sludge Arsenic 4.4369 Stream Std 6.9389 Digester 69.2170 Clean Slud e Cadmium 1.4790 Stream Std 58.2555 Digester 44.2213 Clean Sludge Chromium 67.7857 Stream Sid 88.0907 Nitrification Copper 86.9292 Act. Sludge 1268.9849 Clean Sludge Cyanide 3.9359 Stream Sid 11.3134 Digester Lead 87.1530 Stream Std 189.7835 Nitrification 245.0642 Clean Sludge M ercury 0.14642 Stream Sid 18.1349 Ad. Sludge 13.1785 Clean Sludge Molybdenum 172.6589 SludgeCeling Nickel 10.5185 Stream Sid 46.4657 Nitrification 759.6989 2.4403 StreamStd 151.9398 Silver 0.0586 Stream Sid 33.8270 Act. Slud e MeCeilinSelenium Zinc 39.3594 Stream Std 184.4540 Act. Sludge 3082.8363 Fluoride 461.0 Stream Sid Allowable Hcedworks Loading Ibslday Maximum Allowable Headworks Loading Source 142364 Design 132856 Design 9758 Design 4.4369 Stream Std 1.4790 Stream Std 67.7857 Stream Std 86.9292 Act. Sludge 3.9359 Stream Std 87.1530 Stream Std 0.14642 Stream Std 172.6589 Sl udge Cei I i ng 10.5185 Stream Std 2.4403 Stream Std 0.0586 Stream Std 39.3594 Stream Std 461.0108 Stream Std 2022 Elledge Headwork's Analysis MaximumAllowable Industrial Loadinas Calculations Pollutant awmum Allowable Headworks Loading (lbsfday) MAHL Bass Check to Use HASL Calce (x) Uncontrollable Concentration (mgll) Uncontrollable Source Uncontrollable Load (Ibsfday) MaMmurn Allowable Industrial Load (Ibsfday) BOD 142364 Design 207 Mass 25084 117279 TSS 132856 Design 338 Mass 40959 91897 Ammonia 9758 Design 23.5 Mass 2848 6910 Arsenic 4.4369 Stream Std 0.002 Mass 0.2424 4.19 Cadmium 1.4790 Stream Std 0.0008 Mass 0.0969 1.38 Chromium 67.7857 Stream Std 0.0115 Mass 1.3936 66.39 Copper 86.9292 Act. Sludge 0.0313 Mass 3.7929 83.14 Cyanide 3.9359 Stream Std 0.0018 Mass 0.2181 3.72 Lead 87.1530 Stream Std 0.0043 Mass 0.52111 86.63 M ercury 0.14642 Stream Std 0.00002 M ass 0.00242 0.14 Molybdenum 172.6589 SludgeCeling 0.0016 Mass 0.1939 172.46 Nickel 10.5185 Stream Std 0.0028 Mass 0.3393 10.18 Selenium 2.4403 Stream Std 0.0001 Mass 0.0121 2.43 Silver 0.0586 Stream Std 0.001 Mass 0.1212 -0.06 Zinc 39.35941 Stream Std 1 0.2651 Mass 32.1128 7.25 Fluoride 1 461.01081 Stream Std 1 0.29801 Mass 36.11171 425 Design vs. Pass Thru Warning