Hulu, Intan Maria Novia Dorty (2025) Penggunaan Aerasi Venturi Dalam Mengidentifikasi Nilai KLa dan Kinetika Reaksi Pada Air Baku yang Mengandung Besi (Fe) dan Mangan (Mn). Undergraduate thesis, Universitas Pembangunan Nasional "Veteran" Jawa Timur.
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Abstract
Dissolved oxygen in water can be an important indicator for assessing water quality. To overcome the lack of dissolved oxygen, aeration can be done, such as venturi aeration. The variations used in venturi aeration are a diameter of 12 mm with variations in the number of holes, namely 3, 2, and 1 venturi hole. The desired outcome is that the more air holes there are and the longer the time used, the more potential air can enter (Kadam & Gulhane, 2019). The purpose of this research is to determine the speed of water and air in a venturi aerator, analyze the increase in oxygen diffusion, and evaluate the alility of the venturi aerator to reduce the levels of Fe and Mn in raw water. The tools used are: Water Flow Sensor to measure water speed, Dissolved Oxygen Sensor to measure dissolved oxygen, Air Flow Sensor to measure air speed, and Fe and Mn are tested by a third party. The research results show that the configuration of 3 venturi holes has the highest KLa value of 4 mg/L, while the highest air speed is found at q venturi hole with a value of 10 m/s and the highest water speed at 1 air hole at 7,2 m/s. In addition, the venturi aeratir is effective in reducing Fe levels by up to 100 % and Mn by 76 %, with effectiveness influenced by the initial conditions of the saples and water parameters such as temperature and pH. These results indicate that the number of aeration holes can increase the dissolved oxygen levels in water.
| 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: | INTAN MARIA NOVIA DORTY HULU | ||||||||
| Date Deposited: | 15 Sep 2025 01:40 | ||||||||
| Last Modified: | 15 Sep 2025 01:40 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/43053 |
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