Kemampuan Moving Bed Biofilm Reactor (MBBR) dalam Mengolah Air Limbah Domestik Skala Permukiman untuk Menurunkan Kandungan Senyawa COD dan Nitrogen

Pramesti, Andini Firyal (2024) Kemampuan Moving Bed Biofilm Reactor (MBBR) dalam Mengolah Air Limbah Domestik Skala Permukiman untuk Menurunkan Kandungan Senyawa COD dan Nitrogen. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Selama ini, pengolahan air limbah domestik skala permukiman umumnya menggunakan Anaerobic Baffled Reactor (ABR) dimana unit ini belum mampu mengolah nitrogen dengan maksimal karena prosesnya hanya secara anaerobik. Penyisihan nutrien pada air limbah domestik dapat lebih optimal jika proses pengolahannya secara aerobik dan anoksik. Pada proses aerobik terjaid nitrifikasi, lalu dilanjutkan denitrifikasi pada proses anoksik. Salah satu cara penyisihan senyawa organik dan nitrogen dengan proses aerobik-anoksik adalah dengan Moving Bed Biofilm Reactor (MBBR). Salah satu pertimbangan untuk memilih unit pengolahan air limbah adalah debit pengolahan. Semakin besar skala pelayanan, debit yang perlu diolah juga semakin besar. Pada penelitian ini, unit pengolahan MBBR akan diuji untuk mengolah air limbah domestik dengan debit yang berbeda untuk mengetahui debit yang paling efisien dalam menurunkan konsentrasi organik dan nitrogen pada air limbah domestik. Reaktor dijalankan secara kontinu dengan variasi debit pengolahan yaitu 12 L/hari, 21 L/hari, dan 30 L/hari. Penurunan konsentrasi organik dan nitrogen juga dipengaruhi oleh banyaknya mikroba dalam biofilm yang mendegradasi air limbah. Maka dari itu, dilakukan juga variasi pengolahan dengan volume media pembawa biofilm (biocarrier) yang berbeda-beda. Variasi media yang digunakan adalah 15 v/v, 25 v/v, dan 40 v/v. Adapun parameter yang akan diuji antara lain COD, BOD, amonium-nitrogen, nitrat-nitrogen, nitrit-nitrogen, fosfat, dissolved oxygen (DO), dan MLSS. Hasil penelitian menunjukkan bahwa MBBR dengan kombinasi proses anoksik-aerobik mampu menurunkan kandungan organik berupa parameter COD paling optimum sebesar 98% untuk variasi debit pengolahan 12 L/hari dan media filling ratio (MFR) 40 v/v. Semakin kecil debit pengolahan dan semakin besar MFR, pengolahan dapat berlangsung lebih optimal untuk menyisihkan kandungan organik. MBBR juga mampu menurunkan konsentrasi nitrogen berupa total amonia paling optimum sebesar 95% untuk variasi yang sama, yaitu debit pengolahan 12 L/hari dan MFR 40 v/v
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So far, domestic wastewater treatment on a residential scale generally uses the Anaerobic Baffled Reactor (ABR) where this unit has not been able to process nitrogen optimally because the process is only anaerobic. Nutrient removal in domestic wastewater can be more optimal if the treatment process is aerobic and anoxic. In the aerobic process, nitrification occurs, then denitrification is continued in the anoxic process. One way to remove organic compounds and nitrogen with an aerobic-anoxic process is with the Moving Bed Biofilm Reactor (MBBR). One consideration for choosing a wastewater treatment unit is the treatment discharge. The larger the scale of service, the greater the discharge that needs to be processed. In this study, the MBBR treatment unit will be tested to treat domestic wastewater with different discharges to determine the most efficient discharge in reducing organic and nitrogen concentrations in domestic wastewater. The reactor is run continuously with variations in treatment discharge, namely 12 L/day, 21 L/day, and 30 L/day. The decrease in organic and nitrogen concentrations is also influenced by the number of microbes in the biofilm that degrade wastewater. Therefore, variations in processing with different volumes of biofilm carrier media (biocarriers) were also carried out. The variations in media used were 15 v/v, 25 v/v, and 40 v/v. The parameters to be tested include COD, BOD, ammonium-nitrogen, nitrate-nitrogen, nitrite-nitrogen, phosphate, dissolved oxygen (DO), and MLSS. The results of the study showed that MBBR with a combination of anoxic-aerobic processes was able to reduce organic content in the form of the most optimum COD parameter by 98% for a variation in processing discharge of 12 L/day and a media filling ratio (MFR) of 40 v/v. The smaller the processing discharge and the greater the MFR, the more optimal the processing can be to remove organic content. MBBR was also able to reduce the concentration of nitrogen in the form of the most optimum total ammonia by 95% for the same variation, namely a processing discharge of 12 L/day and an MFR of 40 v/v

Item Type:	Thesis (Other)
Uncontrolled Keywords:	anoksik-aerobik, media K1, debit pengolahan, reaktor kontinu, nitrogen, anoxic-aerobic, K1 media, flow rate, continuous reactor, nitrogen
Subjects:	T Technology > TD Environmental technology. Sanitary engineering
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25201-(S1) Undergraduate Thesis
Depositing User:	Andini Firyal Pramesti
Date Deposited:	01 Aug 2024 07:00
Last Modified:	18 Sep 2024 09:10
URI:	http://repository.its.ac.id/id/eprint/110028

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