Penentuan Kadar CaO pada Kapur pada Pengolahan Air Di PDAM Tirtanadi Delitua

PENENTUAN KADAR CaO DALAM KAPUR PADA PENGOLAHAN AIR
DI PDAM TIRTANADI DELITUA

ABSTRAK
Telah dilakukan penentuan kadar CaO dalam kapur pada pengolahan air di
PDAM Tirtanadi Delitua. Kapur yang digunakan pada proses pengolahan air
masih mengandung senyawa selain CaO seperti SiO2, Al2O3, Fe2O3, MgO, Na2 +
K2O, TiO2, P2O5, SO3. Karena itu dalam penelitian ini akan ditentukan kadar CaO
dalam kapur tersebut. Kadar CaO ditentukan dengan metode titrasi dengan larutan
standar NaOH dan indikator Penolpthalein. Berdasarkan pengamatan yang
dilakukan yaitu diperoleh kadar CaO 64,57% - 63,97% kadar CaO menurun
setiap hari. Dimana kadar yang diperoleh sesuai dengan standar SNI 15-20491994 yaitu 60-70 %.
Kata Kunci : Kapur, Kadar CaO, Titrasi Alkalimetri

Universitas Sumatera Utara

DETERMINATION OF CaO CONTENT OF THE LIME IN WATER
TREATMENT IN THE TAPS TIRTANADI DELITUA

ABSTRACT
Has performed determination of CaO in lime in water treatment in Tirtanadi

Delitua taps . Lime used in water treatment processes still contain compounds
other than CaO such as SiO2 , Al2O3 , Fe2O3 , MgO , Na2 + K2O , TiO2 , P2O5 ,
SO3 . Therefore in this study will be determined the levels of CaO in the limestone
. CaO content was determined by titration with a standard solution of NaOH and
indicators Penolpthalein . Based on observations obtained CaO content of 64.57
% - 63.97 % CaO content decreases every day . Where levels were obtained in
accordance with ISO standards 15-2049-1994 is 60-70 %.
Key words : lime, CaO content, titration alkalimetry

Universitas Sumatera Utara