Electronic Theses and Dissertation

Sungai krueng aceh yang menjadi sumber pasokan air baku pada pengolahan air sistem konvensional terkontaminasi mikroplastik (mps). dalam studi ini, upaya untuk mengurangi mps, kekeruhan, total padatan tersuspensi (tss), nitrat (no3), dan fosfat (po4) dalam air sungai dievaluasi menggunakan pengolahan air sistem konvensional dan filtrasi membran sebagai pembanding. studi ini juga menyelidiki hubungan antara sifat fisik-kimia dan keberadaan mps pada sampel air dari water intake, koagulasi-flokulasi, sedimentasi, filtrasi, dan air olahan pada proses pengolahan air sistem konvensional. metode yang digunakan dalam penelitian ini adalah skala laboratorium, dan untuk hubungan fisik-kimia dengan mps dianalisis menggunakan software r-studio. hasil analisis menunjukkan jenis membran pan 12% (em1) memiliki performa terbaik dalam mereduksi kekeruhan sebesar 98,47%, mikroplastik 93,65%, dan no3 85,62%. namun performa terbaik dalam mereduksi po4 terjadi di pengolahan air sistem konvensional yaitu 77,20% dibandingkan dengan membran. setelah proses pengolahan sistem konvensional dan membran, penurunan kadar kekeruhan, tss, dan no3 cukup baik, terlihat dari nilai baku mutu yang ditetapkan yaitu di bawah 5 ntu, 50 mg/l dan 10 mg/l. sedangkan setelah dilakukan kedua pengolahan air tersebut, kadar po4 tidak memenuhi baku mutu air yaitu 0,2 mg/l sebagaimana diatur dalam peraturan pemerintah nomor 22 tahun 2021. kekeruhan, jeda waktu sampling, zat padat terlarut, zat padat tersuspensi, dan kecepatan aliran merupakan unsur fisika yang berhubungan langsung dengan keberadaan mps di pengolahan air sistem konvensional. kata kunci: kadar pencemar, proses konvensional, filtrasi membran

The Krueng Aceh River, which is a source of raw water supply in conventional water treatment systems, is contaminated with microplastics (MPs). In this study, efforts to reduce MPs, turbidity, total suspended solids (TSS), nitrate (NO3), and phosphate (PO4) in river water were evaluated using conventional water treatment systems and membrane filtration for comparison purposes. This study also investigated the relationship between the physicochemical properties and the presence of MPs in water samples from water intake, coagulation-flocculation, sedimentation, filtration, and treated water in conventional water treatment systems. The method used in this research was laboratory-scale, and the physical-chemical relationship with MPs was analyzed using R-Studio software. The results of the analysis showed that the type of membrane PAN 12% (EM1) had the best performance in reducing turbidity by 98.47%, microplastics by 93.65%, and NO3 by 85.62%. However, the best performance in reducing PO4 occurred in conventional water treatment systems, that is, 77.20% compared to membranes. After processing the conventional and membrane systems, the reduction in turbidity, TSS, and NO3 levels was quite good, as seen from the quality standard values set, which were below 5 NTU, 50 mg/L, and 10 mg/L. Meanwhile, after the two water treatments were carried out, the PO4 level did not meet the water quality standard, namely 0.2 mg/L as stipulated in Government Regulation Number 22 of 2021. Turbidity, sampling time lag, dissolved solids, suspended solids, and flow velocity are physical elements directly related to the presence of MPs in conventional water treatment systems. Keywords: pollutant levels, conventional processes, membrane filtration