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Arwin S.
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Chemical Engineering, Chemistry & Bioengineering Environmental Science

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STUDI KOMPARATIF METODE PERESAP BUATAN UNTUK PENGENDALIAN LIMPASAN AIR HUJAN DI PERMUKIMAN PERKOTAAN: KASUS KELURAHAN LEBAKGEDE KECAMATAN COBLONG, KOTA BANDUNG Arwin S.
Purifikasi Vol 7 No 1 (2006): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v7.i1.240

Abstract

Densely urbanized area required solution to control rainwater run-off in the form of water recharge techniques which was efficient and effective. One of the most conducive water recharge techniques in densely urbanized was recharge well. In general the well design could be compared to pursuant to its wall construction, which might vary in porosity. Based on determination of those methods of recharge well dimension, it was found that Sunjoto method use dynamic approach and yields well dimension which was relatively small. There were three types of suggested recharge wells. The selection of the recharge well types was in accordance to the condition of local area. Each typical well had advantages and disadvantages. At limited backyard area, it was suggested to apply recharge well design (Type II), which some part of the well wall was impervious and the other part was pervious. In road area, it was suggested to use recharge well (Type I), with permeable bottom and all wall was made from brick. In the relatively wide backyard, it was suggested to use recharge well (Type III), where the entire wall was porous.
KAJIAN KEANDALAN SUMBER MATA AIR CIPANIIS MEMENUHI KEBUTUHAN AIR DOMESTIK KOTA CIREBON Arwin S.
Purifikasi Vol 7 No 2 (2006): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v7.i2.245

Abstract

Pengembangan sumber mata air Cipaniis ditingkatkan pada tahun 1982, dengan membangun penangkap baru dengan kapasitas disain 760 L/detik. Observasi debit air Cipaniis dicatat sejak 1996. Seperti halnya komponen-komponen hujan, air sungai, air tanah dari siklus hidrologi, merupakan variabel acak, sehingga untuk menentukan keandalan debit sumber air dilakukan analisa statistik untuk mengurutkan data dari debit air baku terkecil ke debit besar. Kemudian dilakukan uji goodness-of-fit untuk menentukan tingkat kesesuaian sampel dengan fungsi distribusi teoritis tertentu. Dengan uji tersebut dapat ditentukan distribusi teoritis yang mewakili distribusi debit air yang terjadi (distribusi normal, log-normal, Gumbel dan log-Pearson III) untuk menentukan besaran debit air masa depan. Selanjutnya dibangun kurva keandalan debit mata air Cipaniis sesuai kriteria teknis alokasi air baku multisektor BMA PU Cipta Karya. Dari analisa keandalan air baku diperoleh pengoperasian Instalasi Air Cipaniis dengan debit rencana air baku berkisar Q=(650-760) L/detik setara dengan debit andalan kering dengan pengoperasian dua tahun dengan resiko berturut-turut suplai air baku tidak dipenuhi 1 hari untuk debit rencana kering Q= 650 l/detik dan 60 hari untuk debit rencana kering 760 L/detik. Bila berpedoman pada Kriteria Teknis Alokasi Air Baku (BMA Cipta Karya 1994 ), maka debit rencana air baku yang diperkenankan Q = 308 L/detik dengan periode pengoperasian 10 tahun terdapat resiko 1 kali debit rencana tidak dapat dipenuhi selama 7 hari.
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