Analisa Kesadahan Dari Air Baku Dan Air Reservoir Sungai Belawan dengan Metode Titrimetri Menggunakan Digital Titrator di PDAM Tirtanadi Instalasi Pengolahan Air Sunggal

Abstract

Hardness is the nature of water caused by the presence of ions or divalent metal cations. One of the main causes of hardness cations are Ca2 +. Calcium in water tend to form salts with carbonate or bicarbonate. When heated bicarbonate into carbonate small fruiting solubility values. That is why the hardness of the water by bicarbonate / carbonated can be removed by heating. From the results of tests that have been carried out on samples of raw water and the water reservoir in PDAM IPA Tirtanadi Sunggal hardness values obtained are significant and still be within the range of water suitable for consumption and greatly meet the quality standards set by Permenkes No. 492 / Menkes / Per / IV / 2010 so it is not necessary addition of chemicals to eliminate hardness that can cause corrosion and scale on the pipe because the hardness value obtained was in the optimum range.