Fatimah, Nur and , Ir. Haryanto AR., M.S. (2019) Pengaruh Waktu Pengadukan dan Dosis Koagulan Tawas Terhadap Penurunan Kadar Chemical Oxygen Demand (COD) dan Fosfat Pada Limbah Cair Laundry Menggunakan Metode Koagulasi-Flokulasi. Skripsi thesis, Universitas Muhammadiyah Surakarta.
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Abstract
Environmental pollution can come from solid, liquid and gas wastes. One of the liquid pollutions originates waste from the laundry business. There are various kinds of parameters that have impacts to the environment, such as Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), Total Suspended Solid (TSS), phosphate, and others. One method that can be used to reduce the parameters in laundry liquid waste is the coagulation-flocculation. This method is regarded as easy, simple, effective and affordable. The type of coagulant used is aluminum sulfate or commonly called alum. It can be either solid or liquid and easily obtained. This research’s aimed to reduce the levels of Chemical Oxygen Demand (COD) and phosphate in laundry waste by using alum to meet wastewater quality standards. Alum coagulant doses variation were 0.25; 0.5; 0.75; 1; 1.25 gr / L and stirring time which were 5, 10, 15, 20 and 25 minutes. To determine the decrease in the level of Chemical Oxygen Demand (COD), a closed reflux test was carried out with spectrophotometry, as well as testing for a decrease in phosphate levels by spectrophotometry.
| Item Type: | Karya ilmiah (Skripsi) |
|---|---|
| Uncontrolled Keywords: | Chemical Oxygen Demand (COD), fosfat, koagulasi-flokulasi, tawas, limbah cair laundry |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering T Technology > TP Chemical technology |
| Divisions: | Fakultas Teknik > Teknik Kimia |
| Depositing User: | NUR FATIMAH |
| Date Deposited: | 08 Nov 2019 09:05 |
| Last Modified: | 01 Apr 2021 02:49 |
| URI: | http://eprints.ums.ac.id/id/eprint/78281 |
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