Ainii, Aziizah Qurrotu' (2025) Integrasi Immersed Membrane Ke Dalam Bak Sedimentasi Di IPAM Ngagel III PDAM Kota Surabaya. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
IPAM Ngagel III di Surabaya menghadapi tantangan kualitas air, terutama selama musim hujan ketika kekeruhan air baku mencapai 1000 NTU, yang meningkatkan biaya produksi dan residu kimia. Proyeksi kebutuhan air minum Surabaya pada 2036 mencapai 3250 liter/detik, mendukung target cakupan layanan air 97% dan pengurangan kehilangan air menjadi 20%. Teknologi membran mikrofiltrasi (immersed membrane) terbukti efektif menyisihkan kontaminan, termasuk 100% E. coli, 93% kekeruhan, 100% TSS, 37% permanganat organik, dan 81,5% mikroplastik. Penelitian ini mengkaji potensi integrasi membran mikrofiltrasi pada bak sedimentasi IPAM Ngagel III untuk meningkatkan efisiensi pengolahan air. Penelitian mencakup evaluasi kondisi eksisting IPAM Ngagel III, modifikasi bak sedimentasi dengan membran mikrofiltrasi, dan perencanaan desain teknis. Uji laboratorium dilakukan pada air baku dan effluent filtrasi menggunakan metode gravimetri (TSS), turbidimeter (kekeruhan), titrasi permanganat (organik), dan MPN (E. coli). Visualisasi teknis dibuat menggunakan AutoCAD, dilengkapi RAB sesuai kaidah manajemen proyek. Kesimpulan dari Tugas Akhir ini menunjukkan IPAM Ngagel III memiliki kapasitas produksi 1750 L/detik dengan efisiensi penyisihan kekeruhan 31,11%, TSS 35,71%, organik permanganat 25,17%, dan E. coli 100% sebelum filtrasi, serta filtrasi 61,25% (kekeruhan), 44,44% (TSS), 18,18% (organik permanganat), dan 0% (E. coli). Membran mikrofiltrasi memiliki efisiensi removal lebih tinggi: 100% E. coli dan TSS, 93% kekeruhan, dan 37% organik permanganat. Selain itu, untuk meningkatkan lamineritas aliran, plate settler diperlukan dengan kemiringan 60° dan panjang area 43,48 m. Modifikasi dengan penambahan 290 plate settler dan integrasi dua rangkaian modul, 82 modul membrane, 16.400 ceramic plate membran mikrofiltrasi dengan dimensi total modul 18 m × 30 m × 1,72 m.
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IPAM Ngagel III in Surabaya faces significant water quality challenges, particularly during the rainy season when raw water turbidity reaches up to 1000 NTU. This condition increases production costs and chemical residues. The projected drinking water demand for Surabaya by 2036 is expected to reach 3250 liters/second, supporting a target of 97% water service coverage and reducing water losses to 20%. Microfiltration membrane technology (immersed membrane) has proven effective in removing contaminants, achieving 100% E. coli removal, 93% turbidity reduction, 100% TSS removal, 37% organic permanganate reduction, and 81.5% microplastic removal. This research explores the potential integration of microfiltration membranes into the sedimentation tank at IPAM Ngagel III to enhance water treatment efficiency. The study includes an evaluation of the existing conditions at IPAM Ngagel III, modifications to the sedimentation tank with microfiltration membranes, and technical design planning. Laboratory tests were conducted on raw water and filtration effluent using gravimetric methods (TSS), turbidimeter (turbidity), permanganate titration (organics), and MPN (E. coli). Technical visualizations were created using AutoCAD, accompanied by a Bill of Quantities (BOQ) aligned with project management principles. Preliminary findings indicate that IPAM Ngagel III has a production capacity of 1750 L/second, with removal efficiencies of 31,11% for turbidity, 35,71% for TSS, 25,17% for organic permanganate, and 100% for E. coli before filtration. After filtration, the efficiencies improve to 61,25% for turbidity, 44,44% for TSS, 18,18% for organic permanganate, and 0% for E. coli. The microfiltration membrane exhibits higher removal efficiencies: 100% for E. coli and TSS, 93% for turbidity, and 37% for organic permanganate. To improve flow laminarity, a plate settler with a 60° inclination and a total area length of 47,5 m is required. The proposed modifications include the addition of 317 plate settlers and the integration of two module arrays, consisting of 410 membrane modules and 84.050 ceramic microfiltration plates with total module dimensions of 18 m × 30 m × 1,72 m.
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