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Riyanto Haribowo
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Badan Penerbitan Jurnal Fakultas Teknik Universitas Brawijaya Jln. MT. Haryono No.167, Malang, Jawa Timur – Indonesia, 65145 Telpon. (0341) 587710 / Fax. (0341) 551430
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Civil and Environmental Science Journal (CIVENSE)
Published by Universitas Brawijaya
ISSN : -     EISSN : 26206218     DOI : https://doi.org/10.21776/ub.civense
Core Subject : Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Environmental Science
Civil and Environmental Science Journal (Civense) is an international journal, peer-reviewed research publication covering new concepts, theories, methods, and techniques related to science and engineering. The journal will cover, but is not limited to, the following topics: 1. Structural engineering 2. Construction management 3. Environmental engineering 4. Water resources and hydrologic engineering 5. Geotechnical engineering 6. Information technology 7. Coastal and harbor engineering 8. Surveying and geo-spatial engineering 9. Transportation engineering 10. Tunnel engineering 11. Construction materials
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 6 Documents
 1 
Search results for , issue "Vol 3, No 1 (2020)" : 6 Documents clear
Cultivation of Chlorella Sp. and Algae Mix for NH3-N and PO4-P Domestic Wastewater Removal Suryawan, I Wayan Koko; Sofiyah, Evi Siti
Civil and Environmental Science Journal (CIVENSE) Vol 3, No 1 (2020)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2020.00301.4

Abstract

Domestic wastewater provides the largest contribution to pollution both in terms of quantity and quality. Therefore, before being discharged into the environment, wastewater needs to be managed first. This study used the cultivation of microalgae Chlorella Sp. and Algae Mix to manage domestic wastewater. The reactor used in the study was a 3L volume of water. The cultivation process was assisted by UV-A and UV-B with the air flow rate as much as 1.2L/min. Pollutant parameters being focused on were NH3-N and PO4-P nutrient parameters. Allowance for NH3-N by Chlorella sp. and algae mix are 54.9% and 49%, respectively. Allowance for PO4-P Chlorella sp. and algae mix is 70.2% and 57.1% while biomass increase of Chlorella Sp. and Algae Mix is 85.5% and 98.9%. Specific growth rate of Chlorella sp. and algae mix is 0.025 h-1 and 0.027 h-1. As a control on biomass growth, turbidity value in the study also increased.
Performance of multi-soil-layering (MSL) urban domestic wastewater treatment system Haribowo, Riyanto; Prayogo, T.B.; Shaleha, N.N.; Hafni, K.N.
Civil and Environmental Science Journal (CIVENSE) Vol 3, No 1 (2020)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2020.00301.5

Abstract

This research has the objective of examining the efficiency optimization of a multisoil-layering (MSL) system in three stages through the selection of the most efficient material for permeable layers. The utilized charcoal variations were coconut shell charcoal, rice husk charcoal, and corncob charcoal. The utilized incoming discharge for Q1 and Q2 were 0.0063 L/second and 0.0126 L/second. In the first stage of processing, the pumice and zeolite in Q1 had not been able to reduce the TSS below the quality standard, while silica sand in both discharges were still in accordance with the quality standard. In the second stage of processing, Q1 MSL A-s had the best elimination capability, with the efficiencies of TDS, TSS, pH, and DO respectively being 18.13%, 79.68%, 2.60%, and 126.67%, while for Q2, they were 29.99%, 77.76%, 1.62%, and 95.80%. In the third stage, it was shown that MSL B-m was the most optimal reactor compared to all reactors that had their water qualities measured. For Q1 for MSL B-m, the parameters of TDS, TSS, pH, and DO were respectively 33.16%, 84.32%, 1.29%, and 126.67%, and for Q2 they were 30.80%, 80.54%, 1.50%, and 112.30%. In the third stage of processing, MSL A-m, MSL B-m, and MSL C-m that included the addition of soil mixtures and modifications of soil mixture blocks could increase the efficiency of each parameter and had a more stable quality of water outflow compared to standard MSL; this is because the incoming water flow was slower, which caused water contact with the processing media to be more optimal.
Using Water Balance to Analyse Water Availability for Irrigation with Upraising Surface Temperature ( Acase Study Pasar Baru Barrage in Cisadane Watershed) Ariyani, Dwi; Putuhena, Frederick Josep; Wira, Dharma
Civil and Environmental Science Journal (CIVENSE) Vol 3, No 1 (2020)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2020.00301.1

Abstract

This research aims to determine the water balance between water demand and availability at Pasar Baru Barrage. Pasar Baru Barage supply irrigation water for 22.441 ha. Irrigation water requirements related to temperature, evapotranspiration, and precipitation. Higher  air temperature in a region, influents the water requirement. This research was also conducted to see the effect of the rise in temperature of the water needs. The water requirement is calculated based on the needs of irrigation and domestic water to the raw water. For irrigation water needs calculated by planning a cropping pattern in one year in this study, it was planned to plant rice twice and once crop, evapotranspiration was calculated using the Penmann Modification method, so that water requirement in the intake area was obtained multiplying the area of irrigation. Calculation of water availability by using FJ Mock method, the maximum water availability value is 11.75 m3 / second. so that the water balance is obtained by the surplus deficit water balance method. After conducting this study, it can be seen that the air temperature in the cisadane weir of the new market is increasing from 1985 to 2018. The average temperature increases by 0.740C, the minimum air temperature increases by 0.80C and the maximum increases by 0.20C, the average evapotranspiration value decreases by 0.15 mm / day, while the average water availability decreases from the year 1985 to 2018 at 1.8 m3 / second, the amount of water needed for irrigation was 5.57 liters/ second/ha.  The calculation of the water balance in the river is based on a reliable discharge, the result is a deficit every year from 1985 to 2018. So there is a need for Pasar Baru weir to overcome the lack of irrigation water every year, based on discharge data available at Pasar Baru weir from 2013 to 2015, it can seen that the water balance has a surplus every year, the water balance deficit only occurred in July 2015 of 0.3 m3 / sec. The largest water balance occurred in March 2014 amounting to 656.97 m3 / sec. The results of this study can be used as a reference in planning and developing integrated water resources buildings especially in the Cisadane watershed and the Ciliwung-Cisadane river basin in general.
Slope stability analysis in Ulubelu Lampung using computational analysis program Jafri, M.; Iswan, Iswan; Rizki, M.; Susilo, G.E.
Civil and Environmental Science Journal (CIVENSE) Vol 3, No 1 (2020)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2020.00301.6

Abstract

Ulubelu sub-district is the center of geothermal activity in Lampung Province. The Ulubelu geothermal project supply 25% of electricity to Lampung Province. In the future the Government plans to build a geothermal pipeline network with the aim of maximizing the potential found in Ulubelu. One of the objects that must be examined in the construction of the pipeline is the stability of the slope that will be passed by geothermal pipes. Therefore, this study aims to analyze the stability of landslides in the Ulubelu geothermal pipeline. Soil samples for this study were taken from 5 locations: BH-01, BH-02, BH-03, BH-04, and BH-05. This soil sample is then examined to determine its soil mechanics characteristics in the laboratory. The safety factor of each sample is analyzed using 3 slope analysis methods: the Fellenius method, the Bishop method, and the Janbu method, and calculated in Geostudio (Slope/W). The results showed that all samples showed safety factor values that were not much different that were spread between the numbers 1.7 to 4.3. This shows that all sample locations are safe from landslides. This also shows that the characteristics of the soil and the slope of the study area are almost the same.
Hydrological Analysis of TRMM (Tropical Rainfall Measuring Mission) Data in Lesti Sub Watershed Suryaningtyas, Lufi Suryaningtyas; Ery, Suhartanto; Rispiningtati, Rispiningtati
Civil and Environmental Science Journal (CIVENSE) Vol 3, No 1 (2020)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2020.00301.3

Abstract

Alternative solution for availability of inadequate rain data as input to hydrological data is with the assist of TRMM (Tropical Rainfall Measurement Mission) satellite rainfall data which using remote sensing technology (satellite). The purpose of this study is to look for correlations and data corrections and validate TRMM satellite data with rainfall data at the rain station and discharge observation data. Lesti sub-watershed is used as a case study with consideration of the data availability that is considered sufficient. The validation results of corrected TRMM rain data  produce Nash-Sutcliffe Efficiency (NSE), Root Mean Squared Error (RMSE), Correlation Coefficient (R), and Relative Error/Kesalahan Relatif (KR). Then, conducted an analysis of the flow discharge estimation using TRMM rainfall data and validated with Tawangrejeni AWLR (Automatic Water Level Record) data. The results of flow discharge validation using the FJ Mock Method produce an NSE value of 0,507, RMSE 19,383, Correlation Coefficient (R) 0,713, and Relative Error of 0,001. Overall analysis shows TRMM data can be used as an alternative of the rain data that is used to estimate flow discharge, but the result of flow discharge analysis is still better using rainfall data from the rain station post
Application of Sediment Runoff Model to the Wlingi Reservoir Watershed, Indonesia Rahman, Kurdianto Idi; Sisinggih, Dian; Asmaranto, Runi
Civil and Environmental Science Journal (CIVENSE) Vol 3, No 1 (2020)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2020.00301.2

Abstract

Sedimentation is the main problem in Wlingi reservoirs. They are suffering from severe watershed erosion and a heavy load of volcanic ash ejected from the eruption of Mount Kelud. Wlingi reservoir is significantly affected by recurrent volcanic activities of Mount Kelud. After the 2014 eruption, the capacity of Wlingi reservoirs decreased by 82.5% or only 3.70 million m3 from the initial capacity of 24 million m3. To analyze the impact of volcanic eruption disaster on reservoir sedimentation an integrated numerical model of sediment is required. The Fujiyama model is an integrated sediment runoff model using a basin model composed of unit channels and unit slopes. The model seems suitable for a mountainous basin. The simulation results from the model explain that the mechanism of transporting sediment into the Wlingi Reservoir can be explained based on the type of sediment transport. The movement of sediment originating from Kelud Mountain in Kali Lekso is strongly influenced by rainfall duration compared to the intensity of the rainfall. Also, the simulation model results explained that the mechanism of sediment transportation is dominated by suspended load or bed load which when large discharges will move with the mechanism of suspended load sediment transport.

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