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DESAIN BANGUNAN PENAHAN SEDIMEN SUNGAI DI SUB DAS RINDU HATI KABUPATEN BENGKULU TENGAH Meilani Belladona; N Nasir
Jurnal Teknologi Vol 11, No 1 (2019): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.11.1.17-24

Abstract

Wilayah Kabupaten Bengkulu Tengah memiliki beberapa sungai dan anak-anak sungai dengan pola drainase paralel. Perubahan tata guna lahan di Kecamatan Taba Penanjung mengakibatkan terjadinya erosi dan sedimentasi pada aliran sungai. Salah satu sungai di kecamatan Taba Penanjung yang mengalami sedimentasi adalah sungai Rindu Hati dengan panjang 19,598 Km dan lebar 29 m. Metode penelitian menggunakan analisis hidrologi dan hidrolika berdasarkan data sekunder (data curah hujan, data topografi, data morfologi sungai dan data pendukung lainnya). Hasil analisis menunjukkan debit maksimum yang terjadi di Sungai Rindu Hati ada;ah 1529,5122 m3/det. Erosi lahan yang terjadi 16,934 ton/Ha/tahun dengan angkutan sedimen sebesar 1,431 ton/Ha/tahun.  Berdasarkan hasil tersebut  maka dapat disimpulkan bangunan penahan sedimen yang sesuai adalah check dam dengan tinggi peluap 8,73 m untuk main dam dan 3 m untuk sub dam.
PERANCANGAN INSTALASI PENGOLAH AIR LIMBAH (IPAL) INDUSTRI BATIK BESUREK DI KOTA BENGKULU Meilani Belladona; Narlis Nasir; Endri Agustomi
Jurnal Teknologi Vol 12, No 1 (2020): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.12.1.1-8

Abstract

Kelurahan Anggut Atas merupakan Kawasan Sentra Kerajinan Tangan di Kota Bengkulu. Kerajinan yang dijual di kawasan ini beragam dan merupakan ciri khas Provinsi Bengkulu, salah satunya yang terkenal adalan batik besurek. Proses pembatikan melalui tahapan pemalaman, pencelupan dam penghilangan malam. Pada setiap proses menghasilkan limbah yang berpotensi mencemari lingkungan. Tujuan penelitian ini adalah untuk membuat rancangan instalasi pengolah air limbah. Metode yang digunakan berupa kajian teknis, pengujian laboratorium dan pengukuran limbah aliran air limbah batik pada saluran dan badan air. Hasil pengujian laboratorium menunjukkan kadar BOD, COD dan minyak/lemak sangat tinggi yaitu 173,14 mg/l O2 untuk BOD dengan standar mutu 50 mg/l O2, 509,87 mg/l O2 untuk COD jauh di atas standar mutu yaitu 150 mg/l O2 serta kadar minyak/lemak sebesar 540,65 mg/l dengan standar mutu 3,6 mg/l. Berdasarkan data tersebut maka limbah cair harus diolah menggunakan instalasi pengolah air limbah (IPAL) sebelum dibuang ke badan air. Hasil perhitungan dan analisis mendapatkan konstruksi IPAL terdiri atas bak koagulasi (panjang : lebar = 1 : 1,  lebar = 0,3 m, panjang = 0,3 m, H rencana = 0,7 m), bak flokulasi (L tiap kompartemen = 0,05m, diameter paddle = 0.12 m, lebar paddle = 0,06 cm, panjang paddle = 0,3 cm), bak sedimentasi (panjang : lebar = 3 : 1 dengan lebar = 1,2 m dan panjang = 3,6 m), serta bangunan filter (L = 0,6 m; P = 1,2 m; H = 3 m).
ANALISIS TINGKAT PENCEMARAN SUNGAI AKIBAT LIMBAH INDUSTRI KARET DI KABUPATEN BENGKULU TENGAH Meilani Belladona
Prosiding Semnastek PROSIDING SEMNASTEK 2017
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

 ABSTRAKPerkembangan industri di Kabupaten Bengkulu Tengah khususnya Desa Talang Empat mengalami kemajuan yang pesat. Terdapat dua pabrik karet yaitu PT. Batang Hari dan PT. Bukit Angkasa Makmur (BAM) yang dibangun untuk menampung hasil perkebunan masyarakat lokal. Tujuan dari penelitian ini adalah untuk mengetahui kualitas air sungai Air Bengkulu berdasarkan tingkat pencemaran yang terjadi akibat limbah cair buangan pabrik karet. Metode yang digunakan adalah mengambil sampel air pada empat titik yang dianggap mewakili kemudian dianalisa parameter pencemar yaitu pH, zat padat tersuspensi, Ammonia, Natrium Total, BOD, COD. Selain itu dilakukan wawancara secara mendalam kepada masyarakat untuk mengetahui besar dampak yang mereka alami dan dianalisa dengan analisa deskriptif kualitatif. Berdasarkan hasil analisa laboratorium menunjukkan bahwa pada Titik 1 terletak sebelum pabrik kadar TSS 337,2 mg/L, Ammonia 8,6 mg/L, N-Total 10,4 mg/L, COD 280 mg/L, BOD 182 mg/L dengan tingkat tercemar sedang. Titik 2 yang berada di antara PT. Batang Hari dan PT. Bukit Angkasa Makmur (BAM) kadar TSS 198,8 mg/L, Ammonia 6,6 mg/L, N-Total 8,12 mg/L, COD 310 mg/L, BOD 201 mg/L dengan tingkat tercemar sedang. Titik 3 yang berada tepat di belakang pabrik PT. BAM mempunyai kadar TSS 338 mg/L, Ammonia 11,8 mg/L, N-Total 14,33 mg/L, COD 430 mg/L, BOD 280mg/L dengan tingkat tercemar berat. Titik 4 terletak di dekat intake PDAM Desa Surabaya menunjukkan kadar TSS 386,8 mg/L, Ammonia 13,4 mg/L, N-Total 16,27 mg/L, COD 380 mg/L, BOD 247 mg/L dengan tingkat tercemar tinggi. Untuk mengurangi tingkat pencemaran perlu dilakukan proses pengolahan limbah cair kemudian dibuang ke badan air. 
Design of Infiltration Well to Reduce Inundation in Rawa Makmur Village, Bengkulu City Meilani Belladona; Narlis Nasir; Endri Agustomi
Journal of Applied Sciences and Advanced Technology Vol 1, No 2 (2018): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (629.523 KB) | DOI: 10.24853/jasat.1.2.53-58

Abstract

Rawa Makmur Village, especially Merpati I, has an area of 3.6 hectares, has experienced land use changes of 30% in the last 3 years. The purpose of this study is to design infiltration wells to reduce inundation that often occurs in this region. The data used are primary data (soil sampling and laboratory testing) and secondary data (rainfall data, land use data and other supporting data) that are processed using hydrological analysis and hydraulic analysis. Based on the results of data processing obtained the intensity of rainfall with a 20-year return period is 2.56 mm/hour and the flood discharge plan is 0.01229 m3/s. The household debit is 0.212 m3/s, the roof discharge is 0.00000037 m3/s, so the total debit that must be reduced is 0.222 m3/s. The soil sample at the study location is taken and tested in the laboratory. The test results show the soil permeability coefficient is 2.630 x 10-4 m3/s. Infiltration discharge into the soil is 0.000152 m3/s, then the reduced discharge is 0.2218 m3/s. Based on the analysis results obtained the design of infiltration wells with a diameter of 1 meter and a depth of 2.2 meters. One well was effectively used for 2 houses with a reduction of 0.2218 m3/s with a reduction time of 1,297 minutes.
ANALISIS PRODUKTIVITAS TENAGA KERJA PADA PEKERJAAN BETON BERTULANG MENGGUNAKAN METODE TIME STUDY Meilani Belladona; Edito Dwi Antoro; Arif Sandra
MAJALAH TEKNIK SIMES Vol 13 No 1 (2019): Majalah Teknik Simes
Publisher : UNIVERSITAS PROF. DR. HAZAIRIN, SH BENGKULU

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Abstract

Abstract Construction management work must take into account the composition of workers. recruitment of workers, direction of workers, supervision of workers and others. The composition of workers will affect work productivity. The better the qualifications of workers, the higher productivity of workers. The purpose of the study was to analyze the factors that affect worker productivity in reinforced concrete structures in the Ivory Medical Hospital construction project in the City of Bengkulu. Data collection methods use observation and data analysis using the Time Study method. Based on the calculation results obtained the value of worker productivity, namely for column formwork work; 8.92 m² / Oh, beam; 7.25 m² / Oh and plates; 24.32 m² / Oh. In column reinforcement installation work; 473.57 Kg/Oh, beam; 126.31 Kg/Oh and plates; 378.22 Kg / Oh and for column casting work; 50.44 M³/Oh, beam; 15.57 M³/Oh and plates; 5.14 M³/ Oh. The factors that cause the lack of productivity of workers in the work of installation formwork is the distance of the material sites and the number of workers, while the factors affecting reinforcement work are the weather and the position / location of the material which is very far from the installation site.
Pemetaan Saluran Daerah Irigasi Berbasis Sistem Informasi Geografis (SIG) Antonio Roberto; Meilani Belladona; Fenty Wisnu Wardhani
MAJALAH TEKNIK SIMES Vol 14 No 1 (2020): Majalah Teknik Simes
Publisher : UNIVERSITAS PROF. DR. HAZAIRIN, SH BENGKULU

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Abstract

Abstract Seluma Utara Sub district is one of the Sub districts in the Seluma District, where most of the population is working as farmers. This causes the availability of irrigation to be very important to help the community in creating and managing agricultural or plantation land. Along with the rapid development of the area resulting in changes in most of the regional data, especially the form of maps, where the old map has expired (out of date) if compared with statistical data that are currently available. This happens because for the visualization of data in the form of maps requires substantial funds and a relatively long time, so that there are still many areas that still use the old map for planning, implementation and evaluation of development, therefore a mapping of Irrigation Regional (DI) channels is made based. Geographic Information System (GIS) to support the data needs in the District of North Seluma, namely Di Pandan, Talang Empat, and DI Puguk. North Seluma District, Seluma Regency. Data collection for mapping using the Global Positioning System (GPS) is done by tracking or crossing the existing irrigation channels in the field. The results of tracking using GPS are inputted into GPS software and a display of channel information is found in the irrigation area. This map makes it easy for related parties to carry out maintenance and rehabilitation in order to increase agricultural productivity.
Perencanaan Bangunan Pengendali Banjir (Kanal) Di Das Air Bengkulu Wahyu Yulianto; Meilani Belladona; Jawoto Sumajaya
MAJALAH TEKNIK SIMES Vol 15 No 1 (2021): Januari 2021
Publisher : UNIVERSITAS PROF. DR. HAZAIRIN, SH BENGKULU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32663/simes.v15i1.1750

Abstract

Abstract The Air Bengkulu River Basin experiences a frequency of flooding twice a year due to the increase in water discharge during the rainy season. The purpose of this study is to determine the amount of peak discharge of the Air Bengkulu River and make a design of floodway control buildings dimensions in the Air Bengkulu River Basin. Rainfall data used in the purposes of this study are rainfall data for the last 10 years (2010-2019). Rainfall analysis plans calculated by statistical methods. The analysis of the planned flood peak discharge was calculated using the Nakayasu Synthetic Unit Hydrograph method with the results of the peak discharge of the Air Bengkulu River for the 2nd, 5th, 10, 20, 25, 50 and 100 year anniversary periods, respectively 557.68 m3/s; 732.85 m3/s; 845.18 m3/s; 955.15 m3/s; 978.80 m3/s; 1074.35 m3/s; and 1166.71 m3/s. Flood canal design analysis is calculated using the manning equation method (try error) using a return period of 25 years with a discharge of 955.15 m3/s; circular canal with a cross-sectional diameter of 18.5 m; with a water level of 14.68 m and a height of 3.82 m; while the canal is square in shape with a base width of 25 m; water level of 5.55 m; and height of 1.45 m guard; able to accommodate the debit plan return period of 25 years.
Perancangan Desain Bangunan Pengendalian Abrasi Pantai Di Daerah Muara Sungai Muarabangkahulu Medianto Mulyadi; Meilani Belladona
MAJALAH TEKNIK SIMES Vol 11 No 2 (2017): Majalah Teknik Simes
Publisher : UNIVERSITAS PROF. DR. HAZAIRIN, SH BENGKULU

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Abstract

Zakat beach is one of the water tourism places frequented by tourists, but along the way there are several points that have abrasion due to erosion of waves, wind and tidal sea water. This research aims to make the design of coastal protective structures so that the abrasion can be overcome. The data used is wind data. Primary data is a measurement of water level on the estuary of the river Bangkahulu with the help of coal farmers around the location of the review. The design of the abrasion retaining building uses a sloping sidewall with an arrangement of rocks arranged in such a way. Significant wave heights are sought using wave forecasting with an HS value of 1.054 meters and a significant wave period of 5.31 seconds. The calculation result is used to calculate wave height due to sea floor depth change, Ks value is 1,092, refractive coefficient value = 0,736 and wave height at depth 1,52 is 0,847 m. The height and depth of the breaking wave are Hb = 1.005 meters and db = 0.985 meters. Elevation of the breakwater peak with a high free of 0.234 m without a tsunami is 4.212 meters. The peak width of the breakwater building is 0.61 meters with the weight and thick of the main protective layer of 103 Kg and 0.4 meters and the number of granules per 10 meters is 25 grains.
Analisis Dan Pemeteaan Daerah Banjir Menggunakan HEC-RAS Dan SIG Di Kota Bengkulu (Studi Kasus Air Bengkulu Hilir) Melki Sanjaya; Meilani Belladona
MAJALAH TEKNIK SIMES Vol 14 No 2 (2020): Majalah Teknik Simes
Publisher : UNIVERSITAS PROF. DR. HAZAIRIN, SH BENGKULU

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Abstract

Abstract Flooding in Bengkulu city is an event that occurs every year. One area that is often affected by floods is the downstream area of ??the Air Bengkulu River Basin. Flooding in the Air Bengkulu Hilir watershed is caused by an increase in water discharge due to high rainfall. This study aims to create a flood inundation map. This map was created by modeling. flood inundation in the Air Bengkulu Hilir watershed area through a simulation of flood flow. Flood inundation modeling is carried out by utilizing a special mode of analysis in Geographic Information Systems (GIS) for the creation of river geometry as well as a HEC-RAS hydraulic flow simulation program. The method of making maps with several stages, namely the first rainfall analysis, calculation of drainage coefficient and land cover. Secondly, the preparation of digital elevation data (DEM) as a source of data forming river geometry, then the flow simulation uses the flood data of the flood plan in 5 and 10 years at 1789,687 m3 / second and 1830.15 m3 / second. Flood generation is displayed automatically through the RAS Mapper site in ArcGIS. Depth The results of the flood inundation map based on the flood discharge plan for 5 and 10 years are 0 - 10,534 m and 0 - 10,571 m identified areas are Surabaya, Semarang, Bentiring, Tanjung Jaya, Tanjung Agung, Suka Merindu, Rawa Makmur, and Kampung Kelawi.
Pemetaan Daerah Genangan Dan Kajian Genangan Banjir Pada Kawasan Komersial Di Kelurahan Rawa Makmur Meilani Belladona
MAJALAH TEKNIK SIMES Vol 11 No 1 (2017): Majalah Teknik Simes
Publisher : UNIVERSITAS PROF. DR. HAZAIRIN, SH BENGKULU

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Abstract

Sub-district of Rawa Makmur broadly regional 150 Ha and number of residents 5655 men increasingly grows with existence of country college which located in this district. This thing makes area that is formerly mostly in the form of wetland ( marsh) changes over function to become area is woke up. Purpose of this research is to give image of pond distribution pattern happened so that management system design of disaster applicable to especially flooding as well as know the cause of pond happened causing can be done its(the penanggulangan effort. Primary data collecting in the form of topography gauging, passage dimension and interview. Secondary data in the form of location map, data arranges land use, etc. Transformation arranges land use equal to 30% in 3 last year results the happening of pond every the rains. Pond height ranges from 5 - 50 cm in avenue and reachs 100 m at resident area especially which nearby regulus. Factors causing flooding is low topography, transformation arranges land use from area of marsh becomes area of woke up, ugly drainage and only side and destroyed it sluice in disposal of final_ resulting the happening of reverse flow.