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All Journal ASEAN Journal of Systems Engineering Jurnal Teknik Sipil Jurnal Atma Inovasia SENAPAS
Agustina Kiky Anggraini
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Humanities Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences Transportation Other

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Influence of Gravel as Protection Layer on the Filter Run Time Anggraini, Agustina Kiky; Fuchs, Stephan
Jurnal Teknik Sipil Vol 15, No 1 (2018)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (225.153 KB) | DOI: 10.24002/jts.v15i1.3152

Abstract

Abstract: Since the beginning of the usage of slow sand filter (SSF) as one of the water treat-ment technologies, studies on how to enhance the performance have been conducted to date. One of the limitations in the current knowledge is regarding the method to increase the filter run time. The addition of protection layer may extend the filter run time. This paper focuses on the influence of gravel as the protection layer to the filter run time and turbidity removal. Gravel was chosen as the material of protection layer because of its low-cost and availability. A system-atic investigation by comparing only one different factor within the filter, which was protection layer, was conducted under the laboratory scale. The experimentconsisted of two filter columns namely K1 and K2. Both filters were constructed using the same filter depth, type of sand, and grain size distribution. The protection layer was added to filter K1, but not to filter K2. The sol-ids penetration and the increase of filter head loss wasused to evaluate the filter run time. A sta-tistical analysis was also carried out to examine the difference on the turbidity removal from both filters. The findings showed that by adding the protection layer, the filter run time could be extended up to 70%. Regarding to the turbidityremoval, there was insignificant difference between two filters.
INFLUENCE OF EFFECTIVE SIZE AND LEVEL OF SUPERNATANT LAYER IN SLOW SAND FILTER PERFORMANCE Agustina Kiky Anggraini; Stephan Fuchs; Adriana Silva
ASEAN Journal of Systems Engineering Vol 2, No 2 (2014): ASEAN Journal of Systems Engineering
Publisher : Master in Systems Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (428.956 KB)

Abstract

Slow sand filtration has been admitted as an old method of water treatment and has been widely used in the world. This type of sand filter is prominent in its simplicity, low cost, and effectiveness. The term effectiveness refers to the performance on removing particulate matter and microorganisms. There are some significant factors should be considered in the system of slow sand filtration, such as grain size distribution of media, sand type, bed depth, operation mode of filter, and filtration rate. This study focuses on the influence of different effective size of media and operation mode in slow sand filtration especially on removing turbidity. Grain size distribution is represented by the effective size (d10) and uniformity coefficient (Cu). In regard to the operation mode, both sizes were operated under intermittent operation mode and were compared in two different level of supernatant layer: decreasing level and constant level. Laboratory scale experiments were conducted using four filter columns. Two filter columns were filled up with Rhein sand in different effective size of d10 0.075 mm and d10 0.50 mm. Uniformity coefficient Cu 2.5 and curvature coefficient Cc 1 were the same for both d10. Every column was fed with the same concentration of artificial raw water. The artificial raw water was created from Heilerde (clay from Germany) which passed 0.063 mm sieve opening mixed with tap water. Fine grain size tends to be easier to be controlled in regard to filtration rate, and vice versa for the coarse grain size. Surprisingly, the coarse grain size was able to remove turbidity as good as the fine grain size. Permeability of column was also tested and it decreased along with the addition of Heilerde.
Simulasi dan Pelatihan Tanggap Bencana Gempa Bumi dan Kebakaran di SD Budi Utama Yogyakarta Agustina Kiky Anggraini; Henda Febrian Egatama; William Wijaya
Seminar Nasional Penelitian dan Abdimas Vol 1 No 1 (2023): Juni
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/senapas.v1i1.7338

Abstract

The community service was carried out at one of the educational institutions, Budi Utama Elementary School, which has around 500 students. Elementary school students need to understand basic rescue procedures when a disaster occurs. Community service was prioritized in the simulation and training of disaster responses, especially for earthquakes and fires. Earthquakes were one of the focus because this school was located in Yogyakarta, which was prone to this type of natural disaster. The fire was another focus because it usually occurs as a follow-up incident after the earthquake. The simulation and training on earthquakes and fires involved the Badan Penanggulangan Bencana Daerah (BPBD) DIY and UPT Damkar Sleman. The Budi Utama Elementary School community successfully carried out the rescue procedures based on the earthquake simulation. The training on firefighting showed success, too. The Budi Utama Elementary School community has successfully conducted disaster response simulations and training. The impact of these simulations and training was that the Budi Utama Elementary School community became aware of how to respond to a disaster.
Pengukuran Elevasi Kawasan dan Penyelidikan Titik Genangan pada Kawasan Perumahan Nogotirto Elok II, Sleman, Yogyakarta Nectaria Putri Pramesti; Agustina Kiky Anggraini; Christin Sri Hastuti; Martinus Revano Bagus Pramudita
Jurnal Atma Inovasia Vol. 4 No. 3 (2024)
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jai.v4i3.8807

Abstract

Pengabdian dilakukan pada kawasan Perumahan Nogotirto Elok II. Kawasan perumahan ini merupakan salah satu kawasan dengan kepadatan rumah yang cukup tinggi sehingga area resapan sangat rendah. Sistem drainase yang ada bertipe combined sewer system di mana air hujan dan air limbah dari dapur (grey water) dialirkan pada saluran yang sama. Kawasan perumahan ini tidak termasuk dalam area rentan banjir, namun pada musim penghujan, sering terjadi genangan yang cukup dalam. Pengabdian ini fokus pada pengukuran elevasi lahan Perumahan Nogotirto Elok II, pemodelan kawasan untuk mengetahui potensi titik genangan, dan usulan solusi yang dapat diterapkan. Pengukuran elevasi dilakukan menggunakan GPS Geodetik. Pemodelan dilakukan dengan piranti lunak EPA SWMM 5.1. Solusi ditarik dari hasil pengukuran elevasi dan pemodelan yang telah dilakukan. Berdasarkan pengukuran elevasi yang dilakukan, bagian timur perumahan memiliki elevasi yang lebih tinggi. Hasil pemodelan menunjukkan bahwa bagian yang rentan terjadi genangan ada di bagian selatan. Kata Kunci — perumahan, elevasi, tata guna lahan, genangan
Pengukuran Elevasi Kawasan dan Penyelidikan Titik Genangan pada Kawasan Perumahan Nogotirto Elok II, Sleman, Yogyakarta Nectaria Putri Pramesti; Agustina Kiky Anggraini; Christin Sri Hastuti; Martinus Revano Bagus Pramudita
Jurnal Atma Inovasia Vol. 4 No. 3 (2024)
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jai.v4i3.8807

Abstract

Pengabdian dilakukan pada kawasan Perumahan Nogotirto Elok II. Kawasan perumahan ini merupakan salah satu kawasan dengan kepadatan rumah yang cukup tinggi sehingga area resapan sangat rendah. Sistem drainase yang ada bertipe combined sewer system di mana air hujan dan air limbah dari dapur (grey water) dialirkan pada saluran yang sama. Kawasan perumahan ini tidak termasuk dalam area rentan banjir, namun pada musim penghujan, sering terjadi genangan yang cukup dalam. Pengabdian ini fokus pada pengukuran elevasi lahan Perumahan Nogotirto Elok II, pemodelan kawasan untuk mengetahui potensi titik genangan, dan usulan solusi yang dapat diterapkan. Pengukuran elevasi dilakukan menggunakan GPS Geodetik. Pemodelan dilakukan dengan piranti lunak EPA SWMM 5.1. Solusi ditarik dari hasil pengukuran elevasi dan pemodelan yang telah dilakukan. Berdasarkan pengukuran elevasi yang dilakukan, bagian timur perumahan memiliki elevasi yang lebih tinggi. Hasil pemodelan menunjukkan bahwa bagian yang rentan terjadi genangan ada di bagian selatan. Kata Kunci — perumahan, elevasi, tata guna lahan, genangan
Co-Authors Adriana Silva Christin Sri Hastuti Henda Febrian Egatama Martinus Revano Bagus Pramudita Nectaria Putri Pramesti Stephan Fuchs William Wijaya