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All Journal Civil Engineering Journal PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Stabilita : Jurnal Ilmiah Teknik Sipil Fakultas Teknik Universitas Halu Oleo Kendari
Ratna Bachrun
Department Of Civil Engineering, Faculty Of Engineering, Muhammadiyah Kendari University, Kendari 93231,
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Engineering Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Transportation

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Greywater Flow Characteristics for Closed Channel Maintenance Ratna Bachrun; . Santi; Surya Baskara
Civil Engineering Journal Vol 9, No 1 (2023): January
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2023-09-01-03

Abstract

Knowing the characteristics of wastewater and its interaction with the channel is crucial to finding a suitable model and maintenance method to solve the closed channel problem. The purpose of this study is to find the relationship and how much it influences the characteristics of wastewater in closed channels and analyze the limit deposit velocity (LDV) of wastewater so that there is no deposition. The parameters used to analyze wastewater characteristics are density, oil and fat, specific gravity, total suspended solids, total dissolved solids, and kinematic viscosity. The parameters used to analyze the flow characteristics in closed channels are velocity, discharge, Reynolds number, friction coefficient, energy loss, and hydraulic gradient. The method used is experimental research by simulating a closed-channel model prototype. The closed channel model is made from an acrylic pipe with a length of 6 m and a pipe diameter of 0.064 m. Simulations on each wastewater sample and the discharge variations used were 0.005, 0.004, 0.003, and 0.0015 m3/s. Velocity measurements at a 0.5 pipe water level height and distances of 0, 2, 4, and 6 m. The results showed that the nature and composition of the wastewater the flow velocity. The large value of wastewater parameters shows that the flow velocity is small. The wastewater content is considered a load that must be transported to the end of the closed channel. When the discharge increases, the velocity will increase, Reynolds number will increase, and the energy loss will be large, while the friction coefficient is inversely proportional to Reynolds number. The velocities of clean water samples are 2.90 - 1.07 m/s, tofu - making is 2.83 - 1.07 m/s, household is 2.74 - 0.85 m/s, laundry is 2.84 - 1.03 m/s, and the workshop is 2.54 - 0.66 m/s. The limit deposit velocity (LDV) for household wastewater is 1.49 m/s to prevent deposition in closed channels. Doi: 10.28991/CEJ-2023-09-01-03 Full Text: PDF
KARATERISTIK FISIK BERBAGAI JENIS PASIR MENURUT WARNANYA DI KOTA KENDARI One, la; N, Edward; Bahrun, Ratna; Makmur, Muammar
STABILITA || Jurnal Ilmiah Teknik Sipil Vol 11, No 2 (2023):
Publisher : Fakultas Teknik Jurusan Sipil Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/jts.v11i2.41631

Abstract

There are some various types of sand used for construction materials in Kendari City and its surroundings. Visually, the difference in the type of sand used can be seen from the color. This study aims to provide information to stakeholders: the community, government and the business, in considering the selection of technically feasible types of sand for concrete mixtures in Kendari City. The sand used in this study was mointain sand ex. Nambo: light brown sand, white sand and maroon sand, as well as river sand ex. Pohara. Physical characteristic testing carried out by the recommendation of SK SNI No. S-04-1989-F which includes sieving analysis, fineness modulus, aggregate material passing sieve No. 200, organic content, bulk density, specific gravity, and water absorption. This study shows that the physical characteristics of mointain sand ex. Nambo: white sand, light brown sand, and maroon sand do not meet the specifications in relation to the amount of sand passing sieve No. 200. Physical characteristics of river sand ex. Poharadoes not meet the specifications which relating to 2 (two) parameters: the amount of material that passes the sieve No. 200 and organic content.For the use of the sand as a normal concrete mixture, it is recommended that the sand be washed first.
Model Pemanfaatan air Hujan melalui Pemberdayaan Masyarakat di Kelurahan Wundudopi Kecamatan Baruga Kota Kendari: Rainwater Utilisation Model by Community Empowerment in Wundudopi Village, Baruga Sub-district, Kendari City Bachrun, Ratna; Baskara, Surya; Wunantari, Wa Ode Arie; Bahrun, Ria Selfiyani; Santi, Santi
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 10 No. 6 (2025): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v10i6.9065

Abstract

Rainwater Utilisation is one way of preserving and conserving water resources. At present, the use of groundwater is increasing without being accompanied by its sustainability. To maintain the availability of groundwater and to find alternative sources of water to meet daily needs, rainwater harvesting can be done by applying technology. This activity in Wundudopi Village, Baruga District, Kendari City aimed to provide understanding and explanation on the construction of biopore infiltration holes, infiltration wells, and rainwater harvesting. The practical method consisted of surveying and identifying the site, studying the problems, socializing, and making a rainwater harvesting model. Biopore infiltration holes and infiltration wells are used to facilitate the infiltration of rainwater into the soil, increasing groundwater reserves and reducing surface run-off. And rainwater harvesting as an alternative to supply daily water needs. With this community service, rainwater harvesting can be implemented in the domestic environment as a form of participation and responsibility for the availability and sustainability of water resources.
Co-Authors Bahrun, Ria Selfiyani Baskara, Surya Muammar Makmur, Muammar N, Edward One, La Santi Santi Santi Santi Surya Baskara Wunantari, Wa Ode Arie