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# DM water conservation

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### DM water conservation

1. 1. FROM SAMPLING LINES OF STEAM -WATER CYCLE BY DILIP KUMAR NTPC Ltd.
2. 2. SAMPLING LINES OF STEAM WATER CYCLE 1. DM MAKEUP WATER 2. CONDENSATE WATER 3. CPU OUTLET WATER 4. FEED WATER 5. BOILER DRUM WATER 6. SATURATED STEAM WATER 7. MAIN STEAM WATER 8. DEAERATOR OUTLET WATER
3. 3. DM WATER REDUCTION FROM SAMPLING LINES Each sampling line having average flow 0.5 liters/min Total water reduction from steam water cycle/unit/min is 8 × 0.5 = 4.0 liters Total water reduction / unit/hour = 60 × 4 =240 L Total water reduction / unit/day = 240 × 24 =5760 L Total water reduction / unit/month = 5760 × 30 =172800 L Total water reduction /month from stage-II = 172800 × 3 =518400 L =518.400 M3 Total water reduction /year from stage-II = 518.400 × 12 =6220.8 m3
4. 4. DM WATER WASTE FROM SWAS STAGE-II TOTAL SAMPLING LINES AT SWAS PANEL = 27 TOTAL SAMPLING LINES EXCEPT BOILER & CONDENSE COOLING WATER= 21 No. OF LOCAL SAMPLING LINES=12 TOTAL SAMPLING LINES= 33 AVERAGE FLOW OF EACH SAMPLING LINES=0.5 L/MIN TOTAL DM WATER WASTAGE = 0.5×33×60×24×30=712800L/MONTH = 712.8 M3/MONTH
5. 5. DM WATER WASTE FROM SWAS STAGE-I TOTAL SAMPLING LINES AT SWAS PANEL = 29 TOTAL SAMPLING LINES EXCEPT BOILER = 25 No. OF LOCAL SAMPLING LINES=12 TOTAL SAMPLING LINES= 37 AVERAGE FLOW OF EACH SAMPLING LINES=0.5 L/MIN TOTAL DM WATER WASTAGE = 0.5×37×60×24×30=799200 L/MONTH = 799.2 M3/MONTH
6. 6. DM WATER WASTE FROM SWAS STAGE-I&II TOTAL DM WATER WASTAGE FROM STAGE-I = 0.5×37×60×24×30=799200 L/MONTH = 799.2 M3/MONTH TOTAL DM WATER WASTAGE FROM STAGE-II =0.5×33×60×24×30=712800L/MONTH = 712.8 M3/MONTH TOTAL AVERAGE DM WATER WASTE FROM KhSTPS = 1512.0 M3/MONTH
7. 7. ADVANTAGE OF CONSERVATION OF DM WATER 1.LOW AMMONIA CONSUMPTION DURING FEED OF CONSERVED DM WATER 2.REDUCTION IN HCl CONSUMPTION (3.72 M3/MONTH) 3.REDUCTION IN NaOH CONSUMPTION (615 Kg/MONTH) 4.REDUCTION IN EFFLUENT FROM DM PLANT DURING REGENERATION OF DM STREAMS (750M3/MONTH) 5.REDUCTION OF MAIN PLANT EFFLUENTS (1500M3/MONTH) 6.TIME SAVING IN THE REGENERATION AND SERVICE (24 HOURS)
• #### TueGven3

Mar. 21, 2017

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