FARADILA, AFLACHUL RISMA (2026) Kinerja Microbubble Generator Dan Macrobubble Diffuser Terhadap Variasi Debit Udara Pada Efisiensi Penyisihan Parameter NH₃-N Dan COD Air Limbah RPA. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
Chicken slaughterhouse wastewater contains high concentrations of organic matter and ammonia, which may cause environmental pollution if discharged without proper treatment. One treatment technology that can be applied is a biofilter system equipped with microbubble aeration, which provides more efficient oxygen transfer than conventional aeration systems. This study aimed to analyze the effects of different air flow rates and diffuser types (microbubble and macrobubble) on dissolved oxygen (DO) enhancement, COD and NH₃-N removal efficiencies, and to determine the optimum operating conditions for chicken slaughterhouse wastewater treatment. The experiment was conducted using a batch biofilter reactor filled with BB-30 bioball media and operated under an oxic–anoxic–oxic system for 8 hours. The treatments consisted of two diffuser types with air flow rate variations of 1, 2, and 3 L/min. The initial stage included a 14-day seeding process until the biomass reached an MLSS concentration of 3,230–4,550 mg/L, followed by gradual acclimatization of the wastewater until a 100% concentration was achieved. The results showed that increasing the air flow rate led to higher dissolved oxygen concentrations in the reactors. The highest DO concentration was obtained in the microbubble reactor at an air flow rate of 3 L/min, reaching 7.3 mg/L during the first oxic phase and 6.7 mg/L during the second oxic phase. The microbubble reactor exhibited better performance in COD removal, whereas the highest NH₃-N removal efficiency was achieved by the macrobubble reactor at an air flow rate of 3 L/min. Based on these findings, the optimum operating condition for increasing DO concentration and reducing COD was achieved using the microbubble diffuser at an air flow rate of 3 L/min, while the optimum NH₃-N removal was obtained using the macrobubble diffuser at the same air flow rate of 3 L/min.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > TD Environmental technology. Sanitary engineering | ||||||||
| Divisions: | Faculty of Engineering > Departement of Environmental Engineering | ||||||||
| Depositing User: | AFLACHUL RISMA FARADILA | ||||||||
| Date Deposited: | 22 Jul 2026 02:48 | ||||||||
| Last Modified: | 22 Jul 2026 02:48 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/57550 |
Available Versions of this Item
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Kinerja Microbubble Generator Dan Macrobubble Diffuser Terhadap Variasi
Debit Udara Pada Efisiensi Penyisihan Parameter NH₃-N Dan COD Air
Limbah RPA. (deposited UNSPECIFIED)
- Kinerja Microbubble Generator Dan Macrobubble Diffuser Terhadap Variasi Debit Udara Pada Efisiensi Penyisihan Parameter NH₃-N Dan COD Air Limbah RPA. (deposited 22 Jul 2026 02:48) [Currently Displayed]
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