Anisa, Ana (2017) Pengolahan Limbah Domestik Menggunakan Moving Bed Biofilm Reactor (MBBR) dengan Proses Aerobik-Anoksik untuk Menurunkan Konsentrasi Senyawa Organik dan Nitrogen. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Limbah domestik memiliki kandungan organik, amonium dan nitrat yang tinggi dan dapat menyebabkan pencemaran jika langsung dibuang ke badan air. Sehingga diperlukan pengolahan terhadap limbah agar memenuhi kualitas baku mutu yang berlaku. Pengolahan limbah cair dapat dilakukan secara fisik, kimia dan biologi. Namun, dalam aplikasinya pengolahan secara biologi memiliki beberapa keuntungan antara lain pengoperasiannya yang lebih mudah dan murah. Pengolahan biologis dilakukan dengan memanfaatkan mikroorganisme untuk mendegradasi polutan. Salah satu unit pengolahan secara biologis yang sudah umum digunakan adalah Moving Bed Biofilm Reactor (MBBR). Media biofilm yang digunakan dalam penelitian ini adalah kaldness (K1).
Dalam pelaksanaan penelitian ini, digunakan limbah yang berasal dari unit ABR Departemen Teknik Lingkungan ITS dengan variasi konsentrasi COD yang berasal dari inlet dan outlet unit ABR guna menguji kemampuan MBBR dalam mengolah limbah domestik dengan beban organik yang berbeda-beda. Variasi konsentrasi COD yang digunakan adalah konsentrasi low (130–170) mg/L, konsentrasi medium (270–310) mg/L dan konsentrasi high (370–460) mg/L. Selama berlangsungnya penelitian unit ini dijalankan dengan durasi proses aerobik–anoksik yang berbeda pada masing–masing reaktor dengan tujuan menentukan waktu durasi pengolahan aerobik dan anoksik yang paling optimal. Reaktor terbuat dari pipa PVC dengan volume pengolahan sebanyak 5 L. Parameter yang digunakan adalah COD, ammonium-nitrogen, nitrat-nitrogen, nitrit-nitrogen, BOD, pH, DO, MLSS, MLVSS. Berdasarkan hasil analisis terlihat bahwa MBBR dengan media kaldness mampu menurunkan kandungan organik sebesar 81,4%; BOD sebesar 83,6%; ammonium-nitrogen sebesar 92,8%; nitrat-nitrogen sebesar 66,4% dan nitrit-nitrogen sebesar 99,7%. Selain itu, durasi pengolahan limbah dengan hasil optimum dicapai pada reaktor dengan durasi pengolahan aerobik selama 31,5 jam dan anoksik selama 13,5 jam.
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Domestic wastewater has high concentrations of organic substance, ammonium, nitrate and it can cause pollution if drained off to the river directly. Therefore, some treatment is really needed to improve the quality of wastewater. There are so many kinds of waste water treatment, such as physically, biological and chemical. However, in its application, biological processing has several advantages, among others, its operation is easier and cheaper. Biological treatment is done by utilizing microorganisms to degrade pollutants. One of the most commonly used biological treatment units is Moving Bed Biofilm Reactor (MBBR). Biofilm media used in this study is kaldness (K1). In the implementation of this research, we used a typical waste from the ABR unit of Environmental Engineering Department of ITS with concentrations of COD derived from inlet and outlet of ABR units to testing the ability of MBBR in treating domestic wastewater with different organic loads. Variation of COD value in use were low concentration (130 - 170) mg/L; Medium concentration (270 - 310) mg/L and high concentration (370 - 460) mg/L. During the course of the study the unit was run with different aerobic - anoxic duration at each reactor in order to determine the optimal duration of aerobic and anoxic processing time. The reactor was made by PVC pipe with 5L processing volume. The parameters used were COD, ammonium-nitrogen, nitrate-nitrogen, nitrite-nitrogen, BOD, pH, DO, MLSS, MLVSS. Based on the analysis it was shown that MBBR were able to degrade organic substance with the highest removal percentage reached 81,4% for COD, 83,6% for BOD5, 92,8% for ammonium-nitrogen, 66,4% for nitrate-nitrogen and 99,7% for nitrite-nitrogen, respectively. In addition, duration of treatment that achieved the best results was reactor with aerobic processing duration for 31.5 hours and anoxic for 13.5 hours.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Amonium, COD, limbah domestik, Moving Bed Biofilm Reactor (MBBR), nitrat, domestic wastewater |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD646 Sewage--Purification |
| Divisions: | Faculty of Civil Engineering and Planning > Environment Engineering > 25201-(S1) Undergraduate Thesis |
| Depositing User: | Ana Anisa |
| Date Deposited: | 10 Oct 2017 02:18 |
| Last Modified: | 19 Jul 2024 08:08 |
| URI: | http://repository.its.ac.id/id/eprint/44684 |
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