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All Journal SJEE (Scientific Journals of Economic Education) Journal of Sustainable Infrastructure
Putri, Septiani Eka
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Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Engineering Environmental Science Other

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The Effect of Filter Media Grain Size on the Headloss and Backwash Duration at PT PAM Lyonnaise Jaya (PALYJA) Putri, Septiani Eka; Zahra, Nurulbaiti Listyendah; Sarwono, Ariyanti; Nastiti, Almira Davina; Sekarsari, Dinda
Journal of Sustainable Infrastructure Vol. 3 No. 1 (2024): Mitigation Strategies for Sustainable Infrastructure: Balancing Development and
Publisher : Fakultas Perencanaan Infrastruktur, Universitas Pertamina

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61078/jsi.v3i1.28

Abstract

This research is about the effect of filter media grain size on the headloss and backwash duration of rapid sand filter unit. The purpose of this study is to analyze the effect of filter media grain size on headloss and backwash duration. In this research, filter media with 3 different sizes are used, which are assessed based on the effective size (ES) and uniformity coefficient (UC) parameters. Data collection consists of sieve analysis of media filter, headloss test, turbidity test, and TSS test. The Headloss test is carried out on a laboratory scale using a prototype filter unit. Sieve analysis of media filter, turbidity test, and TSS test of backwash water are carried out at IPA 2 PT PAM Lyonnaise Jaya. The results show that each value of headloss for large filter media (ES = 1.29 mm; UC = 1.40), small filter media (ES = 0.87 mm; UC = 1.51), and mixed filter media (ES = 0.89 mm; UC = 1.49) are 4 cm, 5.5 cm, and 4.6 cm. The optimum backwash duration on large filter media, small filter media, and mixed filter media are 15 minutes, 13 minutes, and 14 minutes.
Pengaruh Penerapan Model Pembelajaran Aktif Tipe Learning Start With A Question Terhadap Motivasi Belajar Siswa Pada Mata Pelajaran Ekonomi Di Kelas X SMAN 8 Kota Jambi Putri, Septiani Eka; Elfonda, Elfonda; Oktavia, Dina Dwi
SJEE (Scientific Journals of Economic Education) Vol 8, No 1 (2024): April
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/sjee.v8i1.153

Abstract

This research aims to determine the effect of implementing the Learning Start with a Question type active learning model on students' learning motivation in Economics subjects in class X SMAN 8 Jambi City. This type of research uses quantitative research methods with a descriptive analysis approach and simple linear regression analysis techniques. The results of the research show that the active learning model of the Learning Start with a Question type has a significant effect on students' learning motivation in class X Economics at SMAN 8 Jambi City.
Co-Authors Elfonda, Elfonda Nastiti, Almira Davina Nurulbaiti Listyendah Zahra, Nurulbaiti Listyendah Oktavia, Dina Dwi Sarwono, Ariyanti Sekarsari, Dinda