Rahmawati, S.KM, M.Kes Ketua Penguji Dr. Tien Zubaidah S.KM., M.KL Dosen Pembimbing 1 Ir. Sulaiman Hamzani, S.T., M.T. Dosen Pembimbing 2 RYESA APRILIANI KHATIMAH Pengarang

KEMENTERIAN KESEHATAN REPUBLIK INDONESIA POLITEKNIK KESEHATAN BANJARMASIN PROGRAM STUDI SANITASI LINGKUNGAN PROGRAM SARJANA TERAPAN KESEHATAN LINGKUNGAN TAHUN 2022 ABSTRAK SKRIPSI RYESA APRILIANI KHATIMAH “EFEKTIVITAS KETEBALAN FILTER KARBON AKTIF DENGAN METODE UP FLOW UNTUK MENURUNKAN KADAR BESI (Fe) PADA AIR SUMUR BOR” (Dr. Tien Zubaidah, S.KM, M.KL dan Ir. Sulaiman Hamzani, S.T., M.T) XV + 44 Halaman ; 9 Tabel ; 7 Gambar ; 9 Lampiran Salah satu sumber air yang masih banyak digunakan adalah sumur bor, kualitas air sumur bor dipengaruhi oleh struktur kimia tanah. Berdasarkan hasil uji pendahuluan pada salah satu air sumur bor di Kota Banjarbaru didapatkan kadar besi telah melebihi baku mutu. Perlu dilakukan uji penelitian pembuatan filter dengan metode up flow dalam memperbaiki kualitas Fe air sumur bor. Tujuan penelitian ini adalah mengetahui efektivitas ketebalan filter karbon aktif dalam menurunkan kadar Fe air sumur bor. Jenis penelitian yaitu eksperimen dengan pretest-posttest with control group. Populasi pada penelitian ini yaitu seluruh air sumur bor di industri TempeTahu Asli HB Kota Banjarbaru. Sampel penelitian yaitu sebagian air sumur bor yang diambil untuk uji coba. Berdasarkan hasil pemeriksaan didapatkan kadar besi sebelum perlakuan 4,42 mg/L hasil output uji Mann Whitney didapatkan Asymp Sig. ≤ α (0,05) artinya ada perbedaan yang signifikan antara dua kelompok perlakuan pada ketebalan filter media karbon aktif 0 cm, 30 cm, 60 cm, 90 cm. Filter up flow dengan ketebalan karbon aktif 60 cm dan 90 cm dengan persentase penurunan 83,26% dan 92,53% adalah filter yang efektif menurunkan kadar besi air sumur bor hingga memenuhi standar baku mutu. Masyarakat disarankan agar dapat menggunakan filter up flow dengan ketebalan karbon aktif 60 cm dan memvariasi debit air serta mengukur kejenuhan karbon aktif untuk dijadikan alternatif menurunkan kadar besi (Fe) pada air sumur bor. Kata Kunci : Filter; Up Flow; Karbon Aktif; Besi (Fe) Kepustakaan : 30 (2000-2020) MINISTRY OF HEALTH OF THE REPUBLIC OF INDONESIA HEALTH POLYTECHNIC BANJARMASIN ENVIRONMENTAL SANITATION STUDY PROGRAM APPLIED UNDERGRADUATE PROGRAM ENVIRONMENTAL HEALTH YEAR 2022 ABSTRACT RYESA APRILIANI KHATIMAH'S ESSAY "EFFECTIVENESS OF ACTIVATED CARBON FILTER THICKNESS WITH UP FLOW METHOD TO REDUCE IRON (Fe) LEVELS IN BOREWELL WATER" (Dr. Tien Zubaidah, S.KM, M.KL and Ir. Sulaiman Hamzani, ST, MT) XV + 44 Pages ; 9 Tables ; 7 pictures ; 9 Attachments One source of water that is still widely used is borewell, the quality of borewell water is influenced by the chemical structure of the soil. Based on the results of a preliminary test on one of the borewell waters in Banjarbaru City, it was found that the iron content had exceeded the quality standard. It is necessary to conduct a research test of making filters with the up flow method in improving the quality of Fe in bore well water. The purpose of this study was to determine the effectiveness of the thickness of the activated carbon filter in reducing the Fe content of borewell water. This type of research was experimental with pretest-posttest with control group. The population in this study is all bore well water in the Tempe-Tofu Original HB industry, Banjarbaru City. The research sample is part of the borewell water taken for testing. Based on the results of the examination, it was found that the iron content before treatment was 4.42 mg/L. The results of the Mann Whitney test output obtained Asymp Sig. (0.05) means that there are a significant difference between the two treatment groups in the thickness of the activated carbon filter media 0 cm, 30 cm, 60 cm, 90 cm. Upflow filters with a thickness of 60 cm and 90 cm of activated carbon with a percentage reduction of 83.26% and 92.53% are filters that are effective in reducing the iron content of borewell water to meet quality standards. The community is advised to use an up flow filter with a thickness of 60 cm activated carbon and vary the water flow and measure the saturation of activated carbon to be an alternative to reduce iron (Fe) levels in drilled well water. Keywords : Filter; Up flow; Activated Carbon; Iron (Fe) Literature : 30 (2000-2020)