Analysis of landfill gas migration using autonomous gas monitoring platforms

Transcription

1 Analysis f landfill gas migratin using autnmus gas mnitring platfrms Fiachra Cllins, Dylan Orpen, Crmac Fay, Dermt Diamnd CLARITY: Centre fr Sensr Web Technlgies Natinal Centre fr Sensr Research Dublin City University Dublin 9, Ireland ICSW 2012: Philadelphia, PA. 12 th March 2012

2 Cntents Wh are we? Mtivatins Landfilling in Ireland Landfill gas generatin Platfrm technlgy Landfill gas data analysis Cnclusins

3 Gas sensing Water sensing Adaptive Sensrs Grup

4 Mtivatins 1. Reductin in greenhuse gas pllutin [1, 2] 2. Optimised management /utilisatin f gas-generative surces 3. Eliminate hazardus, cstly and cntrversial scial risks - 33M landfill fire clean-up in Irish midlands [3 ] Kerdiffstwn, Kildare: Jan/Feb 2011 [1] Directive 2008/50/EC f 21 May 2008 n ambient air quality and cleaner air fr Eurpe, E.P. and C.E.U., [2] Kyt Prtcl, Infrmatin Unit n Climate Change, U.N.,1998 [3] SKM Envirs, Appendix 7: Cst scenaris. Eval. env. liabilities at Kerdiffstwn landfill. Available nline: /pubs/ther/envlia/ker/ (accessed 29 July 2011).

5 Landfilling in Ireland The numbers: Natinal rate: 2 millin tnnes per annum (2008) = ~1.2 kg/persn/day 48 pen facilities Maximum landfill capacity will be reached in 2020 Odrus landfill gas accunted fr ~71% f all cmplaints in relatin t licensed facilities (2009) Surce: Fcus n landfilling in Ireland. The Envirnmental Prtectin Agency. 2010

6 Landfill gas generatin Magnitude dependent n numerus factrs: age, waste type, envirnmental cnditins Generated gas is extracted fr flaring r pwer generatin (if CH 4 > 50% vl.) Gas migratin measured in perimeter brehle wells: threshld limits f 1.0% /1.5% vl. fr CH 4 / CO 2

7 Platfrm technlgy Cmpnents: 1. Micrcntrller circuitry 2. Gas extractin 3. Infrared CH 4 and CO 2 gas sensrs 4. GSM cmmunicatin 5. 12V 5Ah lead acid battery (10 fur samples/day) 6. IP68-rated weatherprf casing 2 1 4

8 Analyte surce Physical wrld in-situ measurement Gateway Digital wrld wireless telemetry Internet Data access CLARITY prtal Fusin tables

9 Target gas cncentratin [%v/v] Landfill gas mnitring CO2 cncentratin CH4 cncentratin CO2 threshld limit CH4 threshld limit GA2000 CO2 validatin GA2000 CH4 validatin 0 4/2/11 26/3/11 15/5/11 4/7/11 23/8/11 12/10/11 Duratin 253 days/6072 hrs 890 measurements Validatin checks with GA2000 n 20/04/11, 16/08/11, 16/10/11 > 98 % accuracy fr all checks

10 Barmetric pressure [mbar] Rainfall [mm] SCADA flw [m 3 /30 min] SCADA CH4 [% v/v] Gas cncentratin [%v/v] Data analysis Brehle avg CO2 Brehle avg CH SCADA flwrate SCADA CH Barmetric pressure Rainfall /03/ /03/ /03/ /03/ /03/ /03/ /04/

11 Barmetric pressure [mbar] Target gas cncentratin [%v/v] Data cnclusins Overall reductin in gas levels ver the mnitring perid CO2 cncentratin CH4 cncentratin CO2 threshld limit CH4 threshld limit GA2000 CO2 validatin GA2000 CH4 validatin 4/2/11 26/3/11 15/5/11 4/7/11 23/8/11 12/10/11 Gas levels with increased extractin Gas levels when barmetric pressure and rainfall /3/11-10/3/11 23/3/11-31/3/ Brehle methane levels [% vl. cncentratin] Psitive feedback frm regulatrs and peratrs in terms f data accessibility and usefulness

12 On-ging wrk Distributed netwrk f multiple platfrms GEN3 develpment (cst reductin, pwer lngevity, mdularity in sensrs and cmms) Cmmercialisatin

13 Thank yu fr yu attentin This wrk has been supprted by, EPA, Ireland: grant 2010-ET-MS-10 & SFI: grant cde 07/CE/I1147