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ARSENIC ELEMENT IN GEOTHERMAL FIELD IN INDONESIA

ARSENIC ELEMENT IN GEOTHERMAL FIELD IN INDONESIA

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ARSENIC ELEMENT IN GEOTHERMAL FIELD IN INDONESIA

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  1. ARSENIC ELEMENT IN GEOTHERMAL FIELD IN INDONESIA By ZAINAL ABIDIN CENTER FOR THE APPLICATION OF ISOTOP AND RADIATION TECHNOLOGI NATIONAL NUCLEAR ENERGY AGENCY

  2. ARSENC IN ENVIRONMENTAL AND TOXICITY • HAVE ACCUTE AND CHRONIC EFFECT AS CARCINOGENIC • WHO GUIDE LINE ARSENIC IN DRINKING WATER ARE ABOUT 0.005 TO 0.001 PPM • CAN GIVE EFFECT TO THE AQUATIC ECOSYSTEM • CAN ACCUMULATED IN SEDIMENTS AND PLANTS

  3. ARSENIC ORIGIN IN GEOTHERMAL FLUID • ARSENIC (As) IS A UBIQUITOUS COMPONENT OF ACTIVE AND FOSSIL GEOTHERMAL • ARSENIC EMERGES VOLATELY FROM MAGMA AND OFTEN ACCOMPANIES SULFUR OTHERS METAL EEMENT • GENERALLY ANDESITIC HAVE ARSENIC CONCENTRATION HIGHER THAN BASALT MAGMA

  4. PRODUCTION FIELD DEVELOPMENT AREA EXPLORATION AREA

  5. EXISTING GEOTHERMAL PRODUCTION AND DEVELOPMENT PLAN AREA IN INDONESIA

  6. GEOTHERMAL SYSTEM TRACE HIGH ELEMENTAL (As) AND RADIOAKTIVE ALSO MERGE FROM MAGMA

  7. ARSENIC CONTENT IN ROCK AND GOTHERMAL FLUIDS LOCATIONS AS (mg/kg) As (mg/kg) ROCK TYPE

  8. STUDI ARSENIC IN HOT SPRINGS IN INDONESIA BY HERDIANITA (ITB . J.SciVol 40 no.1 ,2008)

  9. GEOTHERMAL FLUIDS PRODUCTION STEAM SEPARATION :20 -30 % NON VOLATILE COMPONEN ENRICH IN BRINE ARSENIC WILL BE DANGEROUS IN GEOTHERMAL PRODUCTION WHEN ALL THE WASTE BRINE WATER NOT REINJECTED INTO REINJECTION WELL

  10. ARSENIC CONTENT FROM WELL PRODUCTION

  11. STUDY AREA MAP REIJECTION WELL PRODUCTION OF CLUSTER 5 PRODUCTION OF CLUSTER 13 PRODUCTION OF CLUSTER 4 RED DOT IS SAMPLES POINT

  12. ARSENIC CONTAMINATION STUDY IN LAHENDONG FIELD • PURPOSE OF STUDY - TO KNOW HOW FAR THE ARSENIC ION HAVE OCCURRED CONTAMINATION IN GROUNDWATERA AND SURFACE WATER • PROBLEM ENCOUNTERED IN LAHENDONG GEOTHERMAL FIELD • LAHENDONG HIGH TEMPERATURE GEOTHERMAL RESERVOIR (300- 320 O • HAVE HIGH SILICA CONSENTRATION IS ARROUND 600 PPM, NEED COOLING PONDS • TO DECREASED SILICA CONCENTRATION • REINJECTION WELLS NOT ENOUGH TO REINJECTED ALL WASTE WATER TO • REINJECTION

  13. FLOW DIAGRAM OF FLUIDS PRODUCTION IN LAHENDONG FIELD PLN PERTAMINA JARINGAN INSTALASI STEAM FIELD PLTP SUMUR PRODUKSI TURBIN SEPARATOR SCRUBBER ROCK MUFFLER 8,1 Kscg GENERATOR 10,8-11 Kscg 9,5 Kscg 13,8-14 Kscg JALUR UAP JALUR UAP FLUIDA 2 FASE 0 m MANIFOLD JALUR AIR JALUR AIR COOLING TOWER CAP ROCK 1000 SUMUR INJEKSI INJEKSI AIR 2000 COOLING P0ND REINJECTION IS COOLED SYSTEM CAP ROCK RESERVOIR 3000 FAULT HEAT SOURCES ALIRAN AIR REINJEKSI

  14. COOLING PONDS SYSTEM

  15. SAMPLING METHODS • SEPARATION WATER (SPW) • STEAM CONDENSATE • HOT SPRINGS • COOLING PONDS • GROUNDWATER (DUG WELLS) AND LAKES • RIVERS (UPSTREAM AND DOWN STREAM) • SEDIMENT

  16. SAMPLING ACTIVITIES WELL SAMPLING USING SEPARATOR HOT SPRING SAMPLING

  17. WATER SAMPLING IN COOLING POOL WATER SAMPLING IN RIVERS WATER SAMPLING IN LAKE GROUNDWATER SAMPLING

  18. DATA OF ANALYSIS RESULTS WELL PRODUCTION

  19. Cluster 5 Cluster 13 Cluster 4

  20. POOL COOLING WATER OR DISPOSAL

  21. SURFACE WATER

  22. DATA OF ANALISIS RESULTS GROUNDWATER AND SPRINGS

  23. As CONTOUR IN GROUNDWATER

  24. CONCLUSION • FLUIDS PRODUCTION AND DISPOSAL OF LAHENDONG GEOTHERMAL FIELD HAVE As CONCENTRATION IS HIGH • KELONG RIVER AND LEILEM RIVER IN DOWNSTREAM SIDE HAVE EXPERIENCED CONTAMINATION AND ALSO SEDIMENT RIVER • GROUDWATER AS PEOPLE WELLS HAVE As CONCENTRATION LESS THAN WHO REGUALTED VALUE, BUT SHOULD BE MONITORED REGULARLY

  25. p p p p p p T T T T Alur Uji Produksi 16”-14” 16”-14” 20”-16” 4”-300 20”-16” 16”-14” 14”-10” 14”-300 10”-300 14”-10” 14”sch 80 10”sch 80 14”-300 14”-300 14”-300 10”-300 14”-300 10”-300 10”sch 80 silencer 14”sch 80 14”-sch 80 14”-300 14”-300 14”-300 14”-300 12”-14” 12”-10” 12”-14” 12”-14” silencer 14”-300 UBL-8 UBL-6 UBL-7 14”sch 80 20% open UBL-5 close close Full open keterangan barton pressure gate valve Rock muffler reducer thermometer