Analisis Intrusi Air Laut pada Sumur Gali dan Sumur Bor dengan Metode Konduktivitas Listrik di Kecamatan Medan Belawan

Abstract

Research has been done about sea water intrusion in drilling and digging wells with electric conductivity method. Well water samples taken as many as points of drilling well and 20 points of digging well, each 600 mL of 6 (six) villages in Medan Belawan district. The analysis of drilling well water has electric conductivity (EC) 174,24 to 1300,31 μ mho / cm, 25 ° C. The concentration of chloride (Cl) = 0.47 to 301.11 mg / L has been stated as much as sea water intruded 22 samples point (85%) where as in digging well EC value = 594.31 to 4824.56 μ mho / cm, 25 ° C, the chloride concentration (Cl) = 107.4 to 1248.16 mg / L has been stated highly intruded Key words: sea water, drilling well / digging well water, intrusion, electric conductivity

Telah dilakukan penelitian tentang intrusi air laut pada sumur bor dan sumur gali dengan metode konduktivitas listrik.Sampel air sumur diambil sebanyak 26 titik sumur bor dan 20 titik sumur gali masing-masing 600 mL pada 6 (enam) Kelurahan Kecamatan Medan Belawan.Dari hasil pengujian air sumur bor mempunyai Daya Hantar listrik (DHL) 174,24 – 1300,31 μ mho/cm, 25 C Konsentrasi klorida (Cl) =0,47 - 301,11 mg/L dinyatakan telah terintrusi air laut sebanyak 22 titik sampel (85%) sedangkan pada sumur gali nilai DHL = 594,31 – 4824,56 μ mho/cm, 25 C, konsentrasi klorida (Cl) = 107,4 – 1248,16 mg/L dinyatakan telah terintrusi tinggi Kata kunci : air laut, air sumur bor/gali, intrusi, konduktivitas listrik