DOW ClO2 Impact on RO Membrane ECO vs XFR Case Study Echo Zhao,Cheng Yang,Hugh Zhu,Yanhong He,Robert Chu
ClO2 Impact on RO Membrane ECO vs XFR Case Study Echo Zhao, Cheng Yang, Hugh Zhu, Yanhong He, Robert Chu
Outline .ClO2 impact on RO One Project Highlight for WRU in China ClO2 Impacts on RO summary Membrane Soaking Test at ClO2/Hypochlorite Solution .ECO vs XFR case study ·Pilot Overview ECO's Advantage for Energy Saving and Permeate Quality Dow
Outline •ClO2 impact on RO • One Project Highlight for WRU in China • ClO2 Impacts on RO summary • Membrane Soaking Test at ClO2/Hypochlorite Solution •ECO vs XFR case study • Pilot Overview • ECO’s Advantage for Energy Saving and Permeate Quality
1000T/H Petrochemical Wastewater Reclamation Project By Pass:70 T/H 1st stage UF 245T/H Pure Water 2nd stage 3rd stage Item Parameters Item Parameters RO System Total Capacity 980T/H RO Element BW30FR-400/34i RO Racks 4 Racks PV Staging per Rack 36+18+12(3 stage) RO Capacity per Rack 245T/H Pressure Vessel(PV) 7 RO elements/PV Blended Water per Rack 70T/H 1st stage 2 bar,Back Pressure RO System Recovery 70% 3rd stage 3 bar,Booster Pressure Dow
1000T/H Petrochemical Wastewater Reclamation Project 1 st stage 2 nd stage 3 rd stage Pure Water UF By Pass: 70 T/H Item Parameters Item Parameters RO System Total Capacity 980 T/H RO Element BW30FR-400/34i RO Racks 4 Racks PV Staging per Rack 36 +18 +12 (3 stage) RO Capacity per Rack 245 T/H Pressure Vessel(PV) 7 RO elements/PV Blended Water per Rack 70 T/H 1 st stage 2 bar, Back Pressure RO System Recovery 70% 3 rd stage 3 bar, Booster Pressure 245 T/H
RO system 3rd stage Could ClO2 be utilized as disinfectant in polyamide RO system? 1st 2nd stage
RO system 1 st stage 2 nd stage 3 rd stage
ClO2 impact on RO:safe or unsafe? Tolerance/ pH Rejecti on/% Author ppm.h 3 97.4 1200 5.8 93 1200 J.Glater,et al. 8.6 48 1200 7 96 4800 120 7 90 7800 100 360 7800 4734 336 7 70 13200 W.R.Adams et al 100 100 12 100.8 100 3.5 99 12000 ￥ 0 1200 12000 8.5 92 7200 1200 80 3360028000 8.1 99* 144 E.You et al. 7* 99* 12 E.L.Mainz et al. 13200 98.47 100 里 46 7 99.39 100 E.Alayemiek et al. 1200 40 9 97.97 100 7 99* 360 ClO2 tolerance/ppm.hr ●228 A.R.Pitochelli et 1 99* 33600 20 2 4 6 10 e 99* 100.8 G.D.Simpson et al. pH 99 336 T.J.Tseng 7.5 99* 28000 P.K.Eriksson 8.2 50 468 9.3 31 228 P.K.Eriksson 6.2 99 4734 94 50000 R.Sandin Dow
ClO2 impact on RO: safe or unsafe? 1200 1200 1200 4800 7800 13200 12000 7200 144 100 1 2 100 100 360 33600 100.8 336 28000 468 228 4734 50000 20 40 60 80 100 120 2 4 6 8 10 Rejection/% pH ClO2 tolerance/ppm.hr pH Rejecti on/% Tolerance/ ppm.h Author 3 97.4 1200 5.8 93 1200 J. Glater, et al. 8.6 48 1200 7 96 4800 W.R. Adams et al. 7 90 7800 7 70 13200 3.5 99 12000 8.5 92 7200 8.1 99** 144 E. You et al. 7* 99** 12 E. L. Mainz et al. 4 98.47 100 7 99.39 100 E. Alayemiek et al. 9 97.97 100 7 99** 360 A.R. Pitochelli et 7 99** 33600 al. 8 99** 100.8 G.D. Simpson et al. 7* 99 336 T.J. Tseng 7.5 99** 28000 P.K. Eriksson 8.2 50 468 9.3 31 228 P.K. Eriksson 6.2 99 4734 8 94 50000 R. Sandín