Kajian Efisiensi Penurunan Kandungan Besi dalam Air dengan Forced Draft Aerator dan Slow Sand Filter Untuk Skala Rumah Tangga

Nuradji, Sugeng (2007) Kajian Efisiensi Penurunan Kandungan Besi dalam Air dengan Forced Draft Aerator dan Slow Sand Filter Untuk Skala Rumah Tangga. Masters thesis, Institut Teknologi Sepuluh November.

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Abstract

Penurunan kandungan besi (Fe²⁺) dalam air merupakan hal yang penting dilakukan. Dampak yang ditimbulkan oleh Fe²⁺ dalam air apabila tidak dilakukan penurunan adalah gangguan warna kekuningan, noda yang membandel pada pakaian, dan air tersebut menimbulkan rasa yang tidak nyaman untuk diminum. Dalam penelitian ini telah dilakukan kajian efisiensi penurunan kandungan besi dalam air dengan menggunakan forced draft aerator dan slow sand filter.
Tujuan penelitian ini adalah untuk mengkaji pengaruh kinerja forced draft aerator, pengaruh sedimentasi, dan filtrasi terhadap efisiensi penurunan kandungan Fe²⁺ dengan metode aerasi. Ukuran aerator dibuat untuk skala rumah tangga. Analisis sampel air dilakukan di laboratorium. Air yang digunakan dalam penelitian ini adalah air tanah artifisial dengan kandungan Fe²⁺ rata-rata sebesar 15,035 mg/L.
Penelitian ini diawali dengan perancangan alat, analisis ayak pasir, kalibrasi debit air, dan pembuatan air tanah artifisial. Replikasi dilakukan terhadap uji variabel, yaitu tray aerator dengan slope 30°–45°, bidang tray 2–3 tingkat, debit air terolah 0,52 L/menit–1,04 L/menit, serta pengaruh penggunaan fan dan sedimentasi. Hasil penelitian menunjukkan bahwa kandungan besi rata-rata 15,035 mg/L setelah dioksidasi, disedimentasi, dan difiltrasi adalah 0,03 mg/L–0,245 mg/L. Efisiensi penurunan tersebut berada pada rentang 74,98%–99,75%. Kandungan DO antara 1,09 mg/L–2,50 mg/L dan pH rata-rata pada level 7,31.
Hasil tersebut diperoleh pada kondisi variabel sebagai berikut: slope 45°, debit air 0,52–1,04 L/menit, tray 2 (dua) tingkat, menggunakan fan, sedimentasi, dan filtrasi. Ketebalan media pasir pada slow sand filter 0,3 m, UC 2,23, dan ES 0,215. Konsentrasi Fe²⁺ pada level 0,03 mg/L–0,245 mg/L ini sudah di bawah nilai maksimum yang dianjurkan dalam Kepmenkes RI Nomor 907 Tahun 2002, yaitu untuk kandungan besi dalam air minum sebesar 0,3 mg/L.
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Removal of iron content (Fe²⁺) from water is an important process. The impacts generated by Fe²⁺ in water if it is not removed include a yellowish color, stains on clothes that are difficult to remove, and an unpleasant taste that makes the water unsuitable for drinking. In this research, the removal efficiency of iron content using a Forced Draft Aerator and Slow Sand Filter was studied.
The purpose of this research is to study the performance of the Forced Draft Aerator, sedimentation, and filtration in removing Fe²⁺ content using an aeration method. The aerator was designed for household-scale use. Water sample analyses were conducted in a laboratory. The water used in this research was artificial groundwater with an average Fe²⁺ content of 15.035 mg/L.
This research started with equipment design, sand sieve analysis, water flow calibration, and preparation of artificial groundwater. Replication was conducted for variable tests involving a tray aerator with a slope of 30°–45°, 2–3 levels, a water flow rate of 0.52 L/min–1.04 L/min, the use of a fan, and the influence of the sedimentation process. The results of the research show that the iron content was reduced to 0.03 mg/L–0.245 mg/L after the artificial water had been oxidized, clarified, and filtered. The removal efficiency was 74.98%–99.75%. The final DO content was 1.09 mg/L–2.50 mg/L, and the average pH value was 7.31.
The results were obtained under the following variable conditions: a tray aerator with a 45° slope, a water flow rate of 0.52 L/min–0.78 L/min, a 2-level tray, application of a fan, 10 minutes of sedimentation, application of a slow sand filter, and a sand media thickness of 0.3 m in the slow sand filter, with a UC of 2.23 and an ES of 0.215. The Fe²⁺ content of 0.03 mg/L–0.245 mg/L is below the maximum value suggested in Kepmenkes RI No. 907 of 2002, which specifies a maximum iron content in drinking water of 0.3 mg/L.

Item Type:	Thesis (Masters)
Additional Information:	RTL 628.166 Nur k
Uncontrolled Keywords:	Forced draft aerator, Penurunan konsentrasi F&+, Sedimentasi, dan Slow sand filter, forced draft aerator, removal ojFtf+ conten, sedimentation, slow sand filter.
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD430 Water--Purification.
Divisions:	Faculty of Civil, Environmental, and Geo Engineering > Environmental Engineering > 25101-(S2) Master Theses
Depositing User:	magang .
Date Deposited:	18 Sep 2026 04:18
Last Modified:	18 Sep 2026 04:18
URI:	http://repository.its.ac.id/id/eprint/144671

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