Perancangan Instalasi Pengolahan Air Limbah Domestik dengan Sistem Biofilter Anaerob Aerob di PT Reckat Composites Delmima

Abstract

PT Reckat Composites Delmima merupakan industri manufaktur yang menghasilkan air limbah domestik, namun belum memiliki IPAL sehingga jika langsung dibuang ke badan air berpotensi mencemari lingkungan. Penelitian bertujuan merancang desain IPAL domestik dengan sistem biofilter anaerob aerob dan menghitung RAB. IPAL dirancang berdasarkan karakteristik awal air limbah domestik PT Reckat Composites Delmima. Sistem IPAL dirancang dengan unit pengolahan yang terdiri dari grease trap, ekualisasi, sedimentasi awal, anaerob, aerob, sedimentasi akhir, disinfeksi, sludge holding tank dan filtrasi, dengan kapasitas 18 m3/hari. Air limbah IPAL domestik hasil rancangan efektif dalam menurunkan parameter pencemar hingga sesuai baku mutu yakni COD 7,4 mg/L, BOD 5,7 mg/L, TSS 15,2 mg/L, pH 7,5, dan Fecal Coliform 96,1 MPN/100 mL dengan biaya investasi sebesar Rp 143.904.384.

PT Reckat Composites Delmima is a manufacturing industry that generates domestic wastewater, but does not yet have a WWTP, so that direct discharge into water bodies has the potential to pollute the environment. This study aims to design a domestic WWTP using an anaerobic aerobic biofilter system and to calculate the RAB. The WWTP was designed based on the initial characteristics of the domestic wastewater at PT Reckat Composites Delmima. The system was designed with treatment units consisting of a grease trap, equalization, initial sedimentation, anaerobic biofilter, aerobic biofilter, final sedimentation, disinfection, sludge holding tank, and filtration, with a capacity of 18 m³/day. The domestic WWTP wastewater is designed to be effective in reducing pollutant parameters to meet quality standards, namely COD 7.4 mg/L, BOD 5.7 mg/L, TSS 15.2 mg/L, pH 7.5, and Fecal Coliform 96.1 MPN/100 mL with an investment cost of Rp 143,904,384