Presentation on Excellence in Water Management by Aban Power Company Limited.

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This is a presentation from Aban Power Company Limited, one of the finalists at the 5th CII-GBC National Award for Excellence in Water Management in 2008

The awards are in 2 categories, Within the Fence for work done on minimizing the organisations water footprint, and Beyond the Fence for work done in the community around the industry.

This presentation was in the "Within the Fence" category.

We thank CII and the respective companies for giving us permission to upload these presentations on the India Water Portal website for dissemination to a wider audience.


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Presentation on Excellence in Water Management by Aban Power Company Limited.

  1. 1. A Presentation on EXCELLENCE IN WATER MANAGEMENT 2008 By ABAN POWER COMPANY LIMITED 1 12/9/2008 Aban CII_wate r Award 08 COMPANY PROFILE Part of LANCO group – Independent Power Project (IPP) with Natural gas based Combined cycle power plant of Capacity 119.8 MWH – Established thro International Competitive Bidding (ICB) route – Power supply to the TNEB Grid on Long-term basis 2 12/9/2008 Aban CII_wate r Award 08
  2. 2. CDM APPROVED Smoke free chi m ne y ØABAN is the First project in the world for a gas based combined cycle power plant to obtain CDM tag under AM 0029 methodology. Ø Registered as CDM Project with UNFCCC on 29th May 2007 VER 2005 – 68946 CER 2006 – 213891 CER 2007 – 215925 3 12/9/2008 Aban CII_wate r Award 08 ISO 14001 & OHSAS 18001 CERTIFIED 4 12/9/2008 Aban CII_wate r Award 08
  3. 3. N ATUR AL GAS PROCESS FLOW G ENER ATOR C T G FLUE G AS TO GAS TU RBINE ATM OSPH ERE AIR HR G S FLUE GAS TO HRS G BY PASS S TACK M AIN STAC K STEA M TO BL TU RBINE O ST G W D O FEED W WATER TO N HRS G GT WAS H / C T GUA RD PO ND BLO W DO WN C OND ENSATE AIR CO OLED C OND ENSO R BAC K TO H RSG HOT WEL L SO LAR EVAPO RATO N PO NDS WATER F OM R R.O PLANT TWAD BO RAD D . PLANT M M AKE UP TO HRSG REJ ECTS TO PERM EATE - FO R SO LAR PO NDS RECY CLE 5 12/9/2008 Aban CII_wate r Award 08 WATER CONSERVATION PROJECTS – DESIGN STAGE Air Cooled Dry Low NOX Condenser Sav ings in m3/yr Sav ings in m3/yr 2006-07 : 148750 2006-07 : 2061368 2007-08 : 148750 2007-08 : 2142673 RWHP 18,000 m3/yr 6 12/9/2008 Aban CII_wate r Award 08
  4. 4. DRY LOW NOx BURNERS TYP ICAL PO W ER P LANT ABAN Re marks Supe r he ate d Ste am is No steam or No Saving on natural consume d for re ducing the DM wate r re source s NO x le ve l Minimum 45 ppm of NO x Maximum of 20 Ne w standard / be nch le ve l in the emission e ven ppm of NO x in the mark after Wate r or steam e mission. inje ction About 1402 kg/day of NO x About 374 kg/day Le ss pollution – be tte r e mitte d in the flue gas of NO x is only e nvironment e mitte d 425 MT/d of steam is No nee d of ste am State of the art nee de d for re ducing NOx or water technology le ve l to 45 ppm (max) Efficie ncy is less Highly e fficie nt Profit and saving on (more than 47 %) Aban CII_wate r Award 08 natural resource s. DRY LOW NOx BURNERS TYPICAL POWER ABAN Remarks PLANT Cost of ste am injection would NIL tre atme nt cost so No impact on re sult in 4.52 crore s pe r savings is 4.52 crore s e nvironment annum approx pe r annum approx Re duction in DM wate r consumption is 335 DM wate r wate r ltrs / MWH consumption is NIL consumption litres / MWH En vironme ntal investment can Cost of the proje ct – Cost of the proje ct be paid back Additional to existing HRSG Rs.16 crores approx Ze ro discharge piping of e fflue nts Efflue nt gene ration in the No ge ne ration of was possible steam or DM wate r e ffluent production Aban CII_wate r Award 08
  5. 5. DRY LOW NOx BURNERS Method Period Saving of water DLN B URNERS FOR GAS 2005 – 2006 102000 m3 Rs. 307.2 TURBINE – (eigh t mon ths Lakhs of operation) Selected a GT with DLN burners (GE 6FA Gas 2006 – 2007 148750 m3 Rs. 448 Turbine) in place of Lakhs conventional turbine wi thout DLN Result: Savings include s the 2007-2008 148750 m3 Rs. 448 cost of production for ste am using DM wate r, fue l, Lakhs chemical dosing and handling of e fflue nt gene ration & reduce d e miss ion, water 9 conservat ion 12/9/2008 Aban CII_wate r Award 08 AIR COOLED CONDENSERS Method Period Saving of w ater AIR COOLED 2005 – 2006 1353056 m 3 Rs. 406 CONDE NSERS – (eigh t mon ths Lakhs of operation) Installed Air Cooled 2006 – 2007 2061368 m 3 Rs. 618 Condensers in place of conventional cooling towers Lakhs Result: Consumpti on is 102 litres/MWH instead of 2500 2007-2008 2142673 m 3 Rs. 642 lit/MWH Lakhs 10 12/9/2008 Aban CII_wate r Award 08
  6. 6. AIR COOLED HEAT EXCHANGERS Method Period Saving of w ater AIR COOLED HEAT 2005 – 2006 36000 m 3 Rs. 10.80 EXCHANGERS– (eigh t mon ths of Lakhs operation ) Installed Air Cooled Heat Exchangers (ACHE) for 2006 – 2007 51000 m 3 Rs. 15.30 Closed Cooling water Lakhs system (CCW) in pl ace of conventional cooling towers using water resource. 2007-2008 51000 m 3 Rs. 15.30 Result: Consumption is Lakhs almost NIL requirement of water; hence saving of 6.07 m 3 /Hr 12/9/2008 Aban CII_wate r Award 08 11 RAIN WATER HARVESTING POND Method Period Saving of w ater Storm water reservoir – Rs. 10.8 18000 KL approximate Lakhs – capacity with 9 percolation Proactive pits. practice Utilizing this water as and to enrich 2006-07 & 36000 m 3 when required for water maintaining: 2007-08 table 14985 trees, 22000 shrubs 11000 hedges 15000 Sq Mt of Lawn 12 12/9/2008 Aban CII_wate r Award 08
  7. 7. WATER CONSERVATION PROJECTS – CONTINUAL IMPROVEMENT Auxiliary Cooling Water Sav ings in m3/yr 2006-07 : 3240 2007-08 : 3240 Reverse Osmosi s Sav ings in m3/yr 2006-07 : 2448 2007-08 : 3366 13 12/9/2008 Aban CII_wate r Award 08 IMPROVEMENT IN R.O RECOVERY Method Period Saving of w ater R.O PLANT Pre treatment- 2006-07 2448 m 3 Rs. 0.74 Feed pH brought down Lakhs from 7.0-7.5 to 6.0-6.2 by acid treatment thereby 2007-08 3366 m 3 Rs. 1.01 keeping LS I close to zero or Lakhs slightly negati ve Result : Per meate increased by 0.9 m3 /hr 14 12/9/2008 Aban CII_wate r Award 08
  8. 8. R.O– Improved performance after pretreatment modification EFFLUENT fro m DM ACW, BOILE R DM PLANT PL ANT N PIT BLOW DOWN HRSG SUMP HCL DMF FeCl3 POLY C. F GUA RD POND SETT LING TANK HP PU MP REJE CT R.O SKID PERME ATE R.O Treatment after modi fications 15 12/9/2008 Aban CII_wate r Award 08 C.T – COC INCREASE Method Period Saving of w ater By Increase in Cycle of 2006-07 & 6480 m 3 Rs. 3.45 Concentration – COC – in 2007-08 Lakhs Auxiliary Cooling Tower from 5 COC to 8 COC Result: A) Reduction in consumption of water by 270 M3/ Month B) Cost saving in reduction of chemical treatment Rs. 6044 per month 16 12/9/2008 Aban CII_wate r Award 08
  9. 9. Raw Water Con sumption 12000 10000 8000 in Kl 6000 4000 2000 0 05 5 06 6 6 07 07 08 7 7 8 08 07 08 06 5 06 6 7 8 -0 r- 0 -0 r -0 -0 -0 -0 -0 r-0 -0 n- n- n- g- g- g- b- b- g- b- ec ct ec ec ct ct ct Ap Ap Ap Ju Ju Ju Au Au Au Au Fe Fe Fe O O O O D D D Mont hs Aban CII_wate r Award 08 SPECIFIC WATER CONSUMPTION Year Annual Water Generation M 3/ Consumption (MWh) MWh (M 3) 2005 – 06 45200 564298.49 0.08 (8 months) 2006 - 07 45270 858903.454 0.057 2007 - 08 25390 893525.054 0.0284 18 12/9/2008 Aban CII_wate r Award 08
  10. 10. SPECIFIC WATER CONSUMPTION Specific Water Consumption 0.09 0.08 0.07 0.06 m3/MWH 0.05 0.04 0.03 0.02 0.01 0.00 2005-06 2006-07 2007-08 Year 19 12/9/2008 Aban CII_wate r Award 08 R e c yc le d /Unit G e n e ra tio n in M 3 /M W H 0.0 45 0.0 40 0 .03 8 0.0 35 0.0 30 0.0 25 0.025 0.025 0.0 20 0.0 15 0.0 10 0.0 05 0.0 00 2 005 -0 6 20 06-0 7 20 07-08 Yea r Aban CII_wate r Award 08
  11. 11. GOOD G REE N GOVE RNA NCE A WARD - 2007 Aban CII_wate r Award 08 CII ENE RGY EFFICIE NT UNIT AWA RD - 2008 Aban CII_wate r Award 08
  12. 12. IN A NUT SHELL The project was implemented with: v Zero Discharge facility v R.O plant to recycle the effluents & rejects to solar evaporation ponds v GT with DLN burners does not require steam or water vEnergy and water saving A.C.C & A.C.H.E system in place of conventional cooling towers vISO 14001 & OHSAS 18001 Certified v CDM Approved Project 23 12/9/2008 Aban CII_wate r Award 08 Thanks 24 12/9/2008 Aban CII_wate r Award 08

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