Civil and Environmental Science Journal (CIVENSE - Fakultas Teknik Universitas Brawijaya)
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Performance of multi-soil-layering (MSL) urban domestic wastewater treatment system
Get PDFThis 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
Public perception of transportation systems in the halal logistics
Get PDFThe current government, Government Business Entities and mass media in Indonesia are starting to pay attention to halal, because the turnover of halal products worldwide has reached nearly 2 trillion dollars while Indonesia is still more likely to be a consumer than a producer. Not only food, consumers in the world today want cosmetics for pharmaceutical products that have been halal-certified. In Indonesia, problems with the halal market potential are currently still affected by discourse. Indonesia\u27s awareness is still limited, it has not dared to act, whereas in non-Muslim countries themselves many implement halal supply chains. The establishment of the Halal Hub Port in Tanjung Priok as the first Halal Hub Port pilot project in Indonesia was the forerunner to the establishment of the Halal Hub Port in other parts of Indonesia. In addition to the availability of halal logistical infrastructure, it is also necessary to pay close attention to the needs of halal logistic transportation needs. This research was conducted on 89 respondents who are academics of the Islamic University of Malang. By using the Descriptive Analysis method, it will be known which of the variables that most influence the discourse of the halal transportation / cargo system in Indonesia. The results of the study showed that more than 90% of respondents considered important variables needed in the implementation of halal logistics, namely sorting goods according to types as well as halal and non-halal, separating halal and non-halal products, setting the position of goods in cargo, using vehicles specifically for halal products, maintenance of cargo cleanliness, training of halal logistic officers, and health care for halal logistic officers. In addition, the use of halal logistic stickers can also provide halal logistic warranty from producers to consumers
Using Water Balance to Analyse Water Availability for Irrigation with Upraising Surface Temperature ( Acase Study Pasar Baru Barrage in Cisadane Watershed)
Get PDFThis 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
Design of Hazardous Waste Station in XYZ Port, Jakarta City
Get PDFThe design of the hazardous waste station is intended to adjust the security in the XYZ port area based on the fire and leakage possibility based on hazardous waste generation. The research method uses primary data, which is the measurements to determine the availability of land area, and secondary data to determine the generation amount and solid waste characteristics. The design of the hazardous waste station began with field observations to measure the land availability, then collected secondary data to know the volume type, volume, characteristics, and dimensions of hazardous waste collection. The composition of hazardous wastes based on the solid waste characteristics is flammable (20%), flammable and toxic (56%), toxic (23%), and corrosive (1%). The result found that the recommended dimension of the hazardous waste station is 11m x 8m. The total area of ventilation needed is 8m2. The light source of a hazardous waste station is recommended to have 40 Watts of power and each Armature has 2 lights. The container dimensions for leakage prevention are 2m x 2m x 0.6 m with a freeboard of 0.3 m. The fire extinguisher with a range of 12
Analysis of Sedimentation for The Optimization of Lempake Dam Operations for Flood Control for The City of Samarinda, Province of East Kalimantan
Get PDFThe Lempake Dam currently functions as a dam that provides raw water for irrigation and clean water, besides its indirect functioning as the only flood control dam in the Karangmumus sub-watershed.
Current conditions indicate that the Lempake Reservoir has experienced decreased capacity from year to year.
At the normal water level, the reservoir capacity of Lempake Reservoir in 2013 was 0.76 million m3 and in 2018 was 0.39 million m3.
Therefore, efforts are needed to control reservoir sedimentation and reservoir operations to allow the Lempake Dam to continue to function as a flood control reservoir.
This study was carried out by analyzing the volume of sedimentation in the reservoir using the ArcGIS program and analyzing the flood hydrograph at the site by flood routing at the Pasar Segiri River, optimizing reservoir operations, and mapping flood inundation using the RAS Mapping program (HEC-RAS).
The results showed that the storage volume in 2020 is predicted to be 0.241 million m3 with an annual sediment rate of 0.074 million m3.
From the flood routing analysis and optimization of reservoir operations, the cross-sectional capacity of the river in Pasar Segiri (safe limit elevation +3.30 m) is insufficient for a flood discharge of a return period of more than 2 years (more than 222.14 m3/sec) for Scenario 1, and of more than 5 years (more than 320.48 m3/sec) for Scenario 2
Management and arrangement model of Loloan river area for conservation and development as a tourist attraction area
Get PDFLoloan River is located in the Renon village, which borders the Sanur area that has the potential to become a tourist attraction area. However, the current condition is not yet favorable to be used as a tourist area due to the inadequate management of water potential and the arrangement of the Loloan River area. Therefore, a management model and arrangement of the Loloan river area is needed to optimize the development of the Renon Traditional Village around the Loloan River area as a tourist attraction area. The research method used in this study uses descriptive qualitative research methods to create a management and arrangement model that is appropriate to the research location. Management and arrangement model of Loloan River area aims to optimize the development of the Loloan River area as a tourist attraction area that can be done in several ways, including empowering the society in efforts to clean up sediment in the Loloan River Basin so that the river\u27s capacity can be optimal, educating the society about the importance of conserving irrigation channels for sustainable water potential and arrangements in the Loloan River area which can be done by planting around the Loloan River area
The investigation of avalanche patterns on railroad tracks with steep slopes
Get PDFThis study aims to investigate the pattern of landslides on the cliffs forming the railway with steep slopes. This research was conducted at Rejosari Natar Station, South Lampung Regency, Lampung Province. The point of observation is at STA 30 + 250. The data in this study were divided into primary and secondary data. Primary data is the data that is directly obtained in the field by taking soil samples which are then processed in the laboratory. The secondary data is the soil characteristics data of the railroad structure starting from the rail load, rail bearings, ballast layers, sub-ballast layers, and sub-grade. These will be used as input in conducting railroad analysis using Plaxis modelling. Plaxis modeling requires these variables and parameters to be analyzed based on the amount of vertical settlement, total stress, and safety factor values that occur due to rail loads. Reserach found that the value of the soil safety factor was <1.25. This means that the soil condition is in a critical condition for collapse and the ground will experience landslides which can endanger the safety of the passing trains. For this reason, improvements are needed in the soil that will experience landslide
Drainage management study of the city of Merauke towards inundation by rainfall
Get PDFOne problem that is often faced by the City of Merauke as an urban area is inundation, which disrupts socio-economic activities and damages infrastructure in areas affected by inundation. The aim of this case study is to find ways to deal with inundation that occurs due to rainfall with return periods of 2 years, 5 years, 10 years, and 25 years. The inundation volume for the 2-year return period is zero, for the 5-year return period is 12.58 m3/sec with a height of 23.35 cm, for the 10-year return period is 18.57 m3/sec with a height of 25.63 cm, and for the 25-year return period is 20.22 m3/sec with a height of 27.75 cm. With the Microsoft Excel application, hydrological analysis was performed; spatial analysis using Geographic Information Systems (GIS) resulted in a map of the characteristics of the case study area, and with the Storm Water Management Model (SWMM), hydraulics analysis was performed on existing drainage channels along with simulated management
Stability of existing Banyukuwung DAM in recent hydrology and geotechnical conditions
Get PDFBanyukuwung Dam is located in the villages of Sukorejo and Sudo, Sumber District, Rembang Regency, Central Java Province. This dam was built in 1995-1997 to serve the needs of 7750 ha of irrigation water and 35 l/s of raw water needs. Dam type is homogeneous reservoir, has a height of 19.40 m above the riverbed and 25.40 m above the foundation excavation. The length of the dam peak is 181.00 m and the width is 5.00 m while the reservoir volume under normal water conditions is 1.64 million m3. Along with seasonal changes and extreme hydrological behavior and based on an investigation of current geotechnical conditions, stability analysis is needed based on these two conditions. It is very important to plan operational and maintenance activities related to the dam maintenance program. So that it is expected to be useful for the relevant agencies in making operational decisions. The purpose of this study was to determine the stability of the existing Banyukuwung dam based on the latest hydrological and geotechnical behavior. The results are expected to provide recommendations in the management, operation and maintenance of the dam manager
Slope stability analysis in Ulubelu Lampung using computational analysis program
Get PDFUlubelu 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