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All Journal Jurnal Sains Teknologi dan Lingkungan (JSTL) SYNERGY: Jurnal Bisnis dan Manajemen
Hamdani Hamdani
Universitas Riau
Agriculture, Biological Sciences & Forestry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Public Health

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Analisis Column Settling Air Permukaan yang Dikoagulasi dengan Biokoagulan Biji Pepaya: Analysis of Column Settling Surface of Water Coagulated with Biocoagulant Papaya Seed Lita Darmayanti; Hamdani Hamdani; Shinta Elystia
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.468

Abstract

Water of river has high turbidity so it needs to be treated before being used as clean water. Common processing is coagulation, flocculation, sedimentation, and filtration. Type II sedimentation is the settling of flokulen particles, where there is an interparticle interaction so that the size increases and the rate of settling increases. This study aims to analyze the settling column in order to get isoremoval graphs of river water that have been coagulated using papaya seed biocoagulants. Isoremoval graph is useful for determining the value of surface loading rate (Vo) and time of detention (td) making it easier to design sedimentation tank. The study was conducted using a settling column with a diameter of 12.5 cm with a height of 150 cm. The operating conditions varied are sampling point depth of 25 cm, 50 cm, 75 cm, 100 cm and 125 cm with sampling time per port 10 minutes, 20 minutes, 30 minutes, 45 minutes and 60 minutes. The results showed the best turbidity of the settling column was 88.81% at a column settling depth of 25 cm with settling time of 60 minutes. The surface loading rate obtained to produce 85% deposition is 55 m3day-1m-2 with a detention time of 40 minutes.
Strategi Pengembangan Program One Village One Product (OVOP) di Kelurahan Wonorejo Kecamatan Marpoyan Damai Kota Pekanbaru Hamdani Hamdani; Anuar Rasyid; Hasim As’Ari; Zulkarnain Zulkarnain
SYNERGY: Jurnal Bisnis dan Manajemen Vol 6, No 1 (2026)
Publisher : Pelantar Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/synergy.v6i1.83

Abstract

One Village One Product (OVOP) is a regional development approach to produce globally competitive products while maintaining local characteristics. Wonorejo Sub-district has 162 UMKM with potential for OVOP development, yet faces challenges in capital access, marketing, and product standardization. This was study aimed to analyze the existing conditions and formulate development strategies for the OVOP program in Wonorejo Sub-district.  This qualitative research used survey methods with purposive sampling, collecting data through in-depth interviews, observation, and FGD. Data analysis employed Miles and Huberman's interactive model and SWOT analysis. The existing condition shows that Wonorejo has significant local economic potential in the culinary sector, but lacks a distinctive product identity as a regional icon. SWOT analysis identified four strategic directions: (S-O) optimizing UMKM through government training and expanding digital marketing; (W-O) improving packaging quality and establishing a signature product; (S-T) maintaining customer trust and developing product innovation; (W-T) promoting business legality and diversifying raw material sources. Wonorejo Sub-district has great potential for OVOP development through institutional strengthening, human resource capacity building, and cross-sector collaboration involving government, academia, and private sectors
Co-Authors Anuar Rasyid Hasim As'ari Lita Darmayanti Shinta Elystia Zulkarnain Zulkarnain