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Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan
Published by Universitas Diponegoro
ISSN : 1907817X     EISSN : 25500023     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences
Arjuna Subject : -
Articles 15 Documents
 1   2 
Search results for , issue "Vol 3, No 2 (2007): Vol 3, No 2 (2007)" : 15 Documents clear
EVALUASI DESAIN INSTALASI PENGOLAHAN AIR PDAM IBU KOTA KECAMATAN PRAMBANAN KABUPATEN KLATEN Arifiani, Nur Fajri; Hadiwidodo, Mochtar
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (85.64 KB) | DOI: 10.14710/presipitasi.v3i2.78-85

Abstract

To  supply  good  water  quality,  quantity,  and  continuity  is  needed  an  Water  Treatment Plant (WTP).  The  unit  process  and  operation  is  dependent  on  quality  of    water  resources.  WTP in Klaten Unit Prambanan had a design flow of 20 L/s and had quality of water resources which is more than  water  parameter  regulation.  There  are  ferrous  (3,36  mg/L),  mangan  (0,58  mg/L), colour (159  TCU),  and  bad  odour.  So,  it  is  needed  aeration,  koagulation,  flocculation, sedimentation, and filtration units to separate them. Quality of water  efluent in this WTP is less than water parameter regulation. There are ferrous (0,18 mg/L) , mangan (0,21 mg/L), colour (3 TCU), and no odour. But, its need more improvement to optimalize reducing parameters.
ELECTRICITY GENERATION FROM LANDFILL GAS Budisulistiorini, Sri Hapsari
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (581.737 KB) | DOI: 10.14710/presipitasi.v3i2.9-15

Abstract

Energy  from  renewables  has  been  sought  to  replace  current  fossil  fuel  energy  generation. Landfill gas has great potential to generate power since it contains methane 40 to 60%. Utilizing an enhanced landfill  gas as fuel for  power generator is also  beneficial to reduce greenhouse gas  emission  from landfill  otherwise  it  will  escape  to  the  atmosphere.  Current  technology  in power  generation  from landfill  gas  includes  organic  rankine  cycle  (ORC)  and  stirling  cycle engine  (SCE)  to  add  the traditional  reciprocating  internal  combustion  engine  (ICE)  and  gas turbine  (GT).  The  state-of-the art  power  generation  technologies  have  been  developed  and demonstrated  in  the  US  whereas  in Australia,  landfill  gas  power  plant  remains  with  the conventional ones; reciprocating engine and gas turbine.
OPTIMALISASI INSTALASI PENGOLAHAN LUMPUR TINJA DENGAN PENGOMPOSAN LUMPUR TINJA (Studi Kasus IPLT SEMARANG) Oktiawan, Wiharyanto; Priyambada, Ika Bagus
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (964.002 KB) | DOI: 10.14710/presipitasi.v3i2.53-57

Abstract

Semarang Septage  Treatment  Facillty  is a septage manufacture which serves Semarang  Clty distrik. At this moment,  the facility  is disfunction  because  the septage pile up in the anaerobic pond.  Because  of that, Semanng Septage Treatment  Facility  has to be evaluated  which  is consisf of technical, infrastructure and management evaluations. As the resulfs of  the evaluation, the new anaerobic pond is recomended in 2007, so as the new sludge drying bed in 2005 and 2010.  The septage of Semarang Septage Treatment Facility  is very huge that is about 3m3/day.  The solution that can be taken is composting. The septage is fulfill the compost characteristic after it was dried in 30 days. The management of septage composting are consist of transporation, sifterization, weighing and packaging, and also transportation and storage. Thte price of compos product is Rp. 440,00/kg in 2005 and it will rise to 707,00 in 2014. it is relatively cheap if it is compared with the prices of another fertilizers, so it is proper to sold in the market.
PREDIKSI CURAH HUJAN KOTA SEMARANG DENGAN FEEDFORWARD NEURAL NETWORK MENGGUNAKAN ALGORITMA QUASI NEWTON BFGS DAN LEVENBERG-MARQUARDT Warsito, Budi; Sumiyati, Sri
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (120.768 KB) | DOI: 10.14710/presipitasi.v3i2.46-52

Abstract

This paper study the rainfall prediction at Semarang City as time series data with Feed Forward Neural Network  (FFNN)  model.  The  learning  algorithm  that  be  used  are  the  Quasi  Newton BFGS and Levenberg-Marquardt algorithm. The input unit is determined based on the best of ARIMA model. The computation is done with use  Matlab 7.1 program with 1000 epoch, five unit of hidden layer, 100 replication  and use  input at lag  variabel  1,  12  and 13, respectively. The result shows that the prediction is good in relatively, where Quasi Newton BFGS algorithm result the Mean Square Error (MSE) that more accurate.
MENILAI AKSESIBILITAS AIR MINUM (STUDI KASUS: AKSESIBILITAS AIR BERSIH BAGI MASYARAKAT MISKIN DI KOTA SEMARANG) Maryono, Maryono
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (643.756 KB) | DOI: 10.14710/presipitasi.v3i2.86-92

Abstract

Water  accesibility    for  the  poor  people  is  one  of  the  indicator  on  water  supply  and delivary sistem in the cities. Batram and Howard have make a catagorization for the accessibility. There are three level; law accessibility, medium accessibility and hight accessibility. The Accessibility in Semarang City for is at the medium. But the people must spent 5 % from the revenue every month to acces the water. This situation is bad, regarding of the standart, the should spent not more then 3 %.

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