Optimasi Instalasi Pengolahan Air Limbah Industri Pemerahan Sapi Menggunakan Mbbr (Studi Kasus: Ipal Milking Pt X)

Nugroho, Adhiola Kusumoningrat (2022) Optimasi Instalasi Pengolahan Air Limbah Industri Pemerahan Sapi Menggunakan Mbbr (Studi Kasus: Ipal Milking Pt X). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

PT X adalah perusahaan peternakan sapi terbesar di Asia Tenggara. PT X diperkirakan dapat memproduksi susu hingga 45 juta liter tiap tahun. Dalam kegiatan pemerahan susu, diproduksi limbah cair yang berasal dari kegiatan pencucian kain untuk pembersihan puting susu dan kegiatan pembilasan silo penampung susu. Hasil dari analisa air limbah menunjukkan kadar COD maksimum 7534,2 mg/L, BOD 2251 mg/L, dan Amonia 35,48 mg/L. Air limbah tersebut diolah secara terpusat menggunakan IPAL Milking PT X yang menggunakan sistem lumpur aktif. IPAL Milking PT X didesain memiliki kapasitas 20 m3/hari. Permasalahan yang terjadi adalah IPAL mengalami kondisi sludge bulking, sehingga pengendapan lumpur sangat buruk dan melimpah menuju outlet bak sedimentasi menuju unit selanjutnya. Hal ini mengakibatkan kualitas pengolahan lumpur aktif tidak berjalan optimal dan hasil pengolahan masih sering keruh dan berbau. Salah satu solusi untuk mengurangi kondisi sludge bulking adalah penggunaan Moving Bed Biofilm Reactor (MBBR). Pertumbuhan mikroorganisme akan menerapkan sistem terlekat pada media MBBR, sehingga produksi lumpur dapat berkurang, kualitas pengendapan lumpur lebih baik, dan mengurangi kondisi sludge bulking. Penelitian ini bertujuan untuk (1) menentukan kemampuan MBBR dalam meningkatkan penyisihan COD dan mengurangi sludge bulking (2) menganalisa waktu aerasi optimum (3) menganalisa media filling ratio optimum. Contoh uji air limbah diambil dari Bak Kontrol CIP IPAL Milking PT X. Sumber mikroorganisme berasal dari bio-starter EM4. Penelitian dilakukan pada reaktor dengan sistem continous flow. Reaktor teridiri dari reaktor MBBR yang terbuat dari bak plastik berdiameter 24 cm dengan tinggi air efektif 22,5 cm dan bak sedimentasi dari bak plastik berdiameter 24 cm dengan tinggi air efektif 13,5 cm. Variasi waktu aerasi adalah 4 jam; 8,5 jam; dan 17 jam. Variasi volume pengisian media atau media filling ratio adalah 25%, 40%, dan 50% dari volume reaktor. Media MBBR menggunakan Media Kaldness K1. Parameter yang dianalisis adalah COD, Amonia, TSS, dan Kekeruhan sebelum air limbah diolah dan sesudah air limbah diolah secara time series. Berdasarkan hasil penelitian, waktu aerasi optimum adalah pada 8,5 jam. Media filling ratio optimum adalah 40% untuk parameter COD dan TSS, 50% untuk SVI dan Kekeruhan, serta 25% untuk Ammonia.
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PT X is one of the biggest dairy farms in Southeast Asia. Approximately, PT X could produce 45 million liters of milk in each year. During the milking process, it produces wastewater that comes from cleansing clothes laundry and milk tank container cleaning-in�place (CIP). Laboratories analysis shows that maximum concentrations of COD are 7534,2 mg/L, BOD 2251 mg/L, and Ammonia 35,48 mg/L. Those wastewaters were treated centrally using Activated Sludge System IPAL Milking PT X (PT X Milking WWTP). IPAL Milking PT X was designed for treating 20 m3/day of wastewater. The problem that happened on that WWTP is experiencing sludge bulking condition, resulting poor sludge settling then overflowing to the next unit. This condition made activated sludge treatment poor and the effluent often turbid and stinky. One of solutions to minimize this problem is by utilizing Moving Bed Biofilm Reactor (MBBR). Microorganism growth method will be implemented attached growth at MBBR media, so sludge production could be minimized then inimizing sludge bulking condition. This research aims to (1) determine MBBR performance on increasing COD removal and minimizing sludge bulking conditions (2) analyze optimum
aeration time (3) analyze optimum media filling ratio optimum. Wastewater sample was taken from “Bak Kontrol CIP IPAL Milking PT X”. Bio-starter EM4 was used as microorganism source. The research reactor was continuous flow operated. The research reactor consists of MBBR reactor that made from plastic container with 24 cm on diameter and 22,5 cm on effective water level; and sedimentation unit that also made from plastic container with 24 cm on diameter and 13,5 cm on effective water level. Aeration time ariation were 4 hours; 8,5 hours; and 17 hours long. Media filling ratio variation were 25%; 40%; and 50% of reactor volume. Kaldness K1 type was used as MBBR Media. Parameters analyzed were COD, Ammonia, TSS, and Turbidity pre-treated and post-treated. Research showed that the most optimum aeration time is at 8,5 hours. The most optimum media filling ratio is 40% for COD and TSS, 50% for SVI and Turbidity, and 25% for Ammonia.

Item Type:	Thesis (Other)
Additional Information:	RSL 628.3 Nug o-1 2022
Uncontrolled Keywords:	Media Filling Ratio, Media Kaldness K1, Moving Bed Biofilm Reactor, Sludge Bulking, dan Waktu Aerasi
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD646 Sewage--Purification
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25201-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	10 Dec 2024 02:45
Last Modified:	10 Dec 2024 02:45
URI:	http://repository.its.ac.id/id/eprint/115937

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