Kusumaningtyas, Priscila Elia (2021) Optimasi Kualitas Air Minum Pada Proses Jar Test di IPAM Bendung Boro I Perumda Air Minum Tirta Perwitasari Kabupaten Purworejo Menggunakan Metode Taguchi Dengan Pendekatan Grey Relational Analysis. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Perumda Air Minum Tirta Perwitasari Kabupaten Purworejo merupakan badan usaha milik daerah yang bertugas untuk mengolah dan mendistribusikan air bersih kepada masyarakat di Kabupaten Purworejo. Tahapan proses pengolahan air bersih meliputi intake, Water Treatment Plant (WTP), reservoir, dan jaringan distribusi. Koagulasi dan flokulasi merupakan dua proses yang penting dalam WTP. Variabel penentu proses koagulasi dan flokulasi dapat ditentukan dengan melakukan jar test. Terdapat dua karakteristik kualitas air yang dianggap penting dalam proses pengolahan air minum yaitu kadar kekeruhan dan pH air. Penelitian ini dilakukan untuk menentukan seting faktor proses jar test yang tepat untuk mengoptimalkan kadar kekeruhan dan pH dalam air yang meliputi dosis koagulan, pengadukan cepat, waktu pengadukan cepat, pengadukan lambat, dan waktu pengadukan lambat. Rancangan percobaan yang digunakan adalah orthogonal array L27 (313). Pada penelitian ini dilakukan optimasi dengan metode Taguchi Grey Relational Analysis (GRA). Pendekatan GRA digunakan untuk mengatasi kasus multirespon karena perhitungan dari metode tersebut lebih singkat dan efisien dibandingkan pendekatan multirespon yang lain. Hasil dari penelitian menunjukkan bahwa dosis koagulan, pengadukan cepat, pengadukan lambat, dan waktu pengadukan lambat berpengaruh signifikan terhadap kadar kekeruhan dan pH dengan kontribusi berturut-turut sebesar 16,5488%; 22,7255%; 10,3375%; dan 9,4364% ketika menggunakan bobot menurut perusahaan (pH= 0,7; kekeruhan=0,3). Ketika menggunakan bobot menurut NSF-WQI (pH=0,6; kekeruhan=0,4), faktor yang berpengaruh signifikan yaitu dosis koagulan, pengadukan cepat, waktu pengadukan cepat, pengadukan lambat, dan waktu pengadukan lambat dengan kontribusi secara berturut-turut sebesar 19,0060%; 20,0449%; 17,4983%; 8,7711%; dan 8,7055%. Kondisi optimal yang didapatkan ketika menggunakan bobot menurut perusahaan dan NSF-WQI adalah sama untuk empat faktor yaitu pada dosis koagulan 10 ppm, pengadukan cepat 225 rpm, pengadukan lambat 50 rpm, dan waktu pengadukan lambat 5 menit. Waktu pengadukan cepat yang dapat memberikan hasil respon optimum yaitu ketika disetting selama 2 menit (bobot perusahaan) dan 3 menit (bobot NSF-WQI).
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Perumda Air Minum Tirta Perwitasari Purworejo is a regional-owned enterprise whose task is toprocess and distribut clean water to the society in Purworejo Regency. The stages of the clean water treatment process include intake, Water Treatment Plant (WTP), reservoir, and distribution network. Coagulation and flocculation are two important processes in WTP. The variables determinig the coagulation and flocculation processes can be determined by performing a jar test. There are two characteristics of water quality that are considered as the important thing in the drinking water treatment process, namely turbidity and water pH. This research was conducted to determine the appropriate jar test process setting factors to optimize the turbidity and pH levels in water which include coagulant dose, rapid stirring, rapid stirring time, slow stirring, and slow stirring time. The experimental design used is an orthogonal array L27 (313). In this study, optimization was carried out using the Taguchi Grey Relational Analysis (GRA) method. GRA approach is used to deal the multiresponse cases because the calculation of this method is shorter and more efficient than other multiresponse approaches. The results of the study showed that coagulant dose, rapid stirring, slow stirring, and slow stirring time had a significant effect on turbidity levels and pH with a sequent contribution of 16,5488%; 22,7255%; 10,3375%; and 9,4364% when using recommended weight by the company (pH=0,7; turbidity=0,3). When using recommended weight according to NSF-WQI (pH=0,6; turbidity=0,4), the significant influencing factor are the coagulant dose, rapid stirring, rapid stirring time, slow stirring, and slow stirring time. with a sequent contribution of 19,0060%; 20,0449%; 17,4983%; 8,7711%; and 8,7055%. The optimal condition obtained using the recommended weight by the company and NSF-WQI is the same for the four factor, which are coagulant dose set at 10 ppm, rapid stirring set at 225 rpm, slow stirring set at 50 rpm, and slow stirring time set at 5 minute. The rapid stirring time factor that can provide optimum result is when rapid stirring time set at 2 minutes (for recommended weight by the company) and 3 minutes (for recommended weight according to NSF-WQI).
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Coagullation, Flocculation, Jar Test, pH, Taguchi Grey Relational Analysis, Turbidity Level, Flokulasi, Jar Test, Kadar Kekeruhan, Koagulasi |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD259.2 Drinking water. Water quality T Technology > TS Manufactures > TS156 Quality Control. QFD. Taguchi methods (Quality control) |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Statistics > 49201-(S1) Undergraduate Thesis |
| Depositing User: | Priscila Elia Kusumaningtyas |
| Date Deposited: | 31 Aug 2021 09:08 |
| Last Modified: | 31 Aug 2021 09:08 |
| URI: | http://repository.its.ac.id/id/eprint/90944 |
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