Laporan Magang Mandiri PDAM Surya Sembada Surabaya

Pamungkas, Bayu Aji and Yuniarti, Vera and Hesti, Aisyah Nur (2026) Laporan Magang Mandiri PDAM Surya Sembada Surabaya. Project Report. [s.n.]. (Unpublished)

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Abstract

Musim kemarau ataupun penghujan memiliki pengaruh yang besar bagi instalasi pengolahan air yang memanfaatkan air sungai sebagai air baku. Hal ini di sebabkan oleh segala kegiatan biologis atau kimiawi yang berasal dari daratan maupun sungai itu sendiri. Seperti peningkatan TSS pada musim penhujan meningkatnya intensitas curah hujan yang membawa limpasan permukaan (runoff) mengandung lumpur, pasir halus, dan material organik dari daerah tangkapan air menuju sumber air baku sehingga berpotensi menyumbat unit filtrasi Pada musim kemarau, kadar ammonia dan TDS meningkat. Peningkatan ammonia ini disebabkan oleh proses dekomposisi bahan organik di sumber air baku yang terakumulasi saat debit air rendah. Konsentrasi amonia yang berlebih (>0,5) dapat menyebabkan interval pencucian filter menjadi lebih banyak (naik dua kali lipat) dikarenakan mengakselerasi pertumbuhan bakteri dalam lapisan biofilm (schumetzdecke). Pasir silika tidak dapat mereduksi amonia terlarut yang ada didalam air, sehingga diperlukan karbon aktif untuk menyerap amonia tersebut dengan efisiensi 45% saat pertama kali beroperasi dan pada saat backwash (18 jam) berhenti mengadsorpsi.
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Both the dry and rainy seasons exert a significant influence on water treatment plants that rely on river water as raw water. This influence stems from various biological and chemical activities originating from the land as well as the river itself. During the rainy season, the increase in rainfall intensity carries surface runoff containing mud, fine sand, and organic material from the catchment area into the raw water source. This leads to an elevation in Total Suspended Solids (TSS), which has the potential to clog filtration units. Conversely, during the dry season, ammonia and Total Dissolved Solids (TDS) levels rise. This increase in ammonia is driven by the decomposition of organic matter in the raw water source, which accumulates during periods of low flow rate. Excessive ammonia concentrations (>0.5 mg/L) can double the frequency of filter backwashing intervals by accelerating bacterial growth within the biofilm layer (schmutzdecke). Because silica sand cannot reduce dissolved ammonia present in the water, activated carbon is required to adsorb the ammonia. Activated carbon achieves an efficiency of 45% at the start of operation and ceases adsorption after backwash (18 hours).

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	Air sungai, Ammonia, Karbon Aktif, TDS, TSS
Subjects:	Q Science Q Science > QD Chemistry > QD502 Chemical kinetics Q Science > QD Chemistry > QD75.2 Chemistry, Analytic
Divisions:	Faculty of Vocational > 24305-Industrial Chemical Engineering Technology
Depositing User:	Bayu Aji Pamungkas
Date Deposited:	27 Jul 2026 03:36
Last Modified:	27 Jul 2026 03:36
URI:	http://repository.its.ac.id/id/eprint/137480

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