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Sri Sumiyati
Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro
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PENGOLAHAN AIR LIMBAH KEGIATAN PENAMBANGAN BATUBARA MENGGUNAKAN BIOKOAGULAN : STUDI PENURUNAN KADAR TSS, TOTAL Fe DAN TOTAL Mn MENGGUNAKAN BIJI KELOR (Moringa oleifera) Samudro, Ganjar; Sumiyati, Sri
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 7, No 2 (2010): Vol 7, No 2 (2010)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (348.101 KB) | DOI: 10.14710/presipitasi.v7i2.57-61

Abstract

Salah  satu  alternatif  pengolahan  air  limbah  kegiatan  penambangan  batubara  adalah  dengan menggunakan biji kelor (Moringa oleifera) sebagai biokoagulan. Protein dan logam alkali kuat yang terkandung dalam biji  kelor (Moringa oleifera) dapat bersifat sebagai poliektrolit dan kutub positif yang dapat mengikat koloid dalam air buangan. Penelitian ini dilakukan untuk menentukan dosis optimum dan efektifitas biji kelor dalam menurunkan TSS, total Fe dan total Mn pada kondisi aktual terhadap perbedaan  karakteristik  air  limbah kegiatan penambangan  batubara  dengan  menggunakan jartest. Hasil penelitian menunjukkan dari tiga sumber air limbah yang berbeda (sampel A, sampel B dan sampel C), terjadi penurunan TSS sebesar  99,93%, total Fe 99,71%  dan total Mn 10,84% dengan dosis optimum 1,50 gr/L untuk sampel A, kemudian penurunan TSS sebesar 91,52%, total Fe 85,47% dan total Mn 0,53% dengan dosis optimum 0,50 gr/L untuk sampel B dan penurunan TSS sebesar  99,29%, total Fe 99,43% dan total Mn 50,54% dengan dosis optimum 1,25 gr/L untuk sampel C. Perbedaan karakterisik sumber air limbah dan sifat polutan yang terkandung  akan  mempengaruhi kinerja biji kelor (Moringa oleifera)
ANALISIS KINERJA PENGOLAHAN AIR LIMBAH PAVILYUN KARTIKA RSPAD GATOT SOEBROTO JAKARTA Sumiyati, Sri; Imaniar, Imaniar
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 2, No 1 (2007): Vol 2, No 1 (2007)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (53.5 KB) | DOI: 10.14710/presipitasi.v2i1.39-42

Abstract

Hospitals  produce  solid  waste  and  also  wastewater,  hazardous  and  non-hazardous.  Pavilyun Kartika as a part of RSPAD Gatot Soebroto, produces wastewater that has characteristic like a domestic wastewater. The hazardous waste that produced by Pavilyun Kartika were managed by RSPAD Gatot Soebroto. In Pavilyun Kartika, wastewater with flows 52 m3/days comes from bathrooms  for  patients, laundry,  public  bathrooms,  and  also  kitchen.  Wastewater  of  Pavilyun Kartika contains high BOD, COD, and also Ammoniac, though still in save numbers, because still  under  the  standard  regulation  for wastewater  in  Jakarta.  Wastewater  treatment  plant  in Pavilyun Kartika use extended aeration method, as part of  biological treatment. The principal of the treatment are aeration, sedimentation, and chlorination.
PENGOLAHAN LIMBAH CAIR DAN LIMBAH BETALAKTAM PT. PHAPROS, TBK, SEMARANG Sumiyati, Sri; Prabarani, Fitri
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 5, No 2 (2008): Vol 5, No 2 (2008)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2151.457 KB) | DOI: 10.14710/presipitasi.v5i2.22-30

Abstract

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PENERAPAN RECYCLE, REUSE DAN RECOVERY (3R) LIMBAH BAHAN BERBAHAYA DAN BERACUN SECARA OFF-SITE PT. PENGELOLA LIMBAH INDUSTRI BATAM (PLIB), JAKARTA Sumiyati, Sri; Iriany, Milda Restuti
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 4, No 1 (2008): Vol 4, No 1 (2008)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (209.759 KB) | DOI: 10.14710/presipitasi.v4i1.48-55

Abstract

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PENGARUH KEPADATAN KENDARAAN BERMOTOR DAN ANGIN TERHADAP KONSENTRASI TIMBAL (Pb) PADA DAUN ANGSANA (Pterocarpus indicus) DAN MAHONI (Swietenia macrophylia) DI MUSIM KEMARAU Huboyo, Haryono Setiyo; Sumiyati, Sri
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 6, No 1 (2009): Vol 6, No 1 (2009)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1001.551 KB) | DOI: 10.14710/presipitasi.v6i1.1-5

Abstract

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PENENTUAN FORMULA PENAMBAHAN VOLUME AIR KONSTAN PADA PENGOMPOSAN SAMPAH DAUN Samudro, Ganjar; Sumiyati, Sri; Ratna, Dian Asri Puspa; Hastuti, Sindi Martina; Kurnia, Vaneza Citra; Hadiwidodo, Mochtar
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 14, No 1 (2017): Maret 2017
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (95.538 KB) | DOI: 10.14710/presipitasi.v14i1.41-44

Abstract

Penambahan volume air pada pengomposan sampah daun masih dilakukan secara manual, membutuhkan waktu yang banyak, dan tenaga kerja yang besar. Tujuan penentuan ini dimaksudkan untuk mendapatkan formula penambahan volume air konstan pada pengomposan sampah daun secara kontinyu. Metode penelitian diawali dengan observasi penelitian hubungan waktu terhadap kadar air berdasarkan variasi kadar air yang diinginkan 50% dan 60% sebagai kadar air optimum dalam proses pengomposan, kemudian dilanjutkan analisis kuantitatif deskriptif dalam penentuan formula. Formula penambahan volume air konstan pengomposan sampah daun sebagai berikut: debit input (mL/L/hari): y = 1,764e0,048x, volume air (mL/L): y = 10,01e0,049x, dan volume air (%):y = -0,698x + 61,09.
PENGARUH WAKTU STABILISASI PADA SEQUENCING BATCH REACTOR AEROB TERHADAP PENURUNAN KARBON Sumiyati, Sri
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 1, No 1 (2006): Vol 1, No 1 (2006)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (67.755 KB) | DOI: 10.14710/presipitasi.v1i1.13-18

Abstract

One  of  biological  wastewater  treatment  process    modification  Sequencing  Batch  Reactor by exploiting  period  of  stabilization  time  earn  to  lessen  capacities  of  total  aeration volume. Mechanism  that  happened  in  this  SBR  modification  same  as  that  happened  in Contact Stabilization.  There  was  existence  process  biosorption,  was  due  to  adsorption  of  the organic matter  onto  sludge  particels,  during  the  contact  period  (fill  -  react  time).This  research aim  to know  influence  of  stabilization  time  to  degradation  of  COD.  This  research,  used  SBR reactor with volume operate for 5 Liter with COD influent consentration 1139.2 mg/L. The variation of stabilization  time  :  3,  4,  5  and  6  hours  and  time  reacted  :  0,5  ;  1  ;  1,5  and  2  hours as independent  variables.  COD  effluent  concentration  as  depended  variable.Result  of research indicate that progressively time of stabilization and concentration COD (mg/L) will experience of efficiency  improvement.  Time  reacted  to  give  influence  the  happening  of  biosorption (the adsorption of organic matter onto sludge particel). The fenomena that happened is degradation of concentration COD will achieve maximum level at the total contact time 1,5 hour. Efficiency of optimum degradation COD become of variation  r/s = 1 : 6.
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.
PEMANFAATAN HYDRILLA (Hydrilla verticillata) UNTUK MENURUNKAN LOGAM TEMBAGA (Cu) DALAM LIMBAH ELEKTROPLATING STUDI KASUS: INDUSTRI KERAJINAN PERAK KELURAHAN CITRAN, KOTAGEDE Sumiyati, Sri; Handayani, Dwi Siwi; Hartanto, Widya
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 6, No 2 (2009): Vol 6, No 2 (2009)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.915 KB) | DOI: 10.14710/presipitasi.v6i2.23-26

Abstract

Silver handicraft industries released waste water which contained copper (Cu) with concentration of 4,628mg/l. Such concentration had exceeded the standard quality oh KepMenLH No 51 Year 1995. Waste water treatment to reduce Cu concentration was conducted by using hydrilla (Hydrilla verticillata). This experiment had a purpose to find out the efficiency of hydrilla weight and the optimum retention time to reducde Cu concentration. Experiment was conducted in batch system with 150 gr, 200 gr, and 250 gr hydrilla weight variances and 30 days retention time. Experiment design used was Completely Random Design (CRD) repeated twice. Waste water sample was 5 L for each topless with the total of 7 topless. Cu concentration analysis was performed on laboratory by examining some parts of the hydrilla sample once in 3 days, and the waste water was examined for the Cu concentration on the 30th day. The operation result showed the average of Cu concentration reduction at the control topless without any treatment was 3,782 mg/l, the average of the 250 gr hydrilla weight treatment was 0,862 mg/l. The averages of Cu reduction efficiency for each weight were : 150 gr = 54,49%; 200 gr = 70,43%; 250 gr = 81,37%. The optimum retention time is at the 15th day with 0,027 mg/l of Cu concentration reduction.  These results showed that the most efficient treatment was the hydrilla with the weight variance of 250 gr with 15 days retention time
PENGARUH TANAMAN RUMPUT BEBEK (Lemna minor) TERHADAP PENURUNAN BOD DAN COD LIMBAH CAIR DOMESTIK Endro, Sutrisno; Sri, Sumiyati
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 7, No 1 (2010): Vol 7, No 1 (2010)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (163.86 KB) | DOI: 10.14710/presipitasi.v7i1.42-47

Abstract

Domestic wastewater coming from household activities is an environmental problem that needs to be taken  seriously.  For  it.  appropriate  alternative  treatment  is  needed,  both  in  terms  of  economic efficiency and the environment. As one attempts to solve is to take advantage of duckweed plants as a medium  to  improve  the  quality  of  the  leachate  is  biologically  or  as  bioakumulator  substance  - contaminants. This study aims to determine the effectiveness (efficiency) of duckweed plants (Lemna minor) in a decreasing concentration of BOD and COD of domestic wastewater. The method used is based  on  laboratory  analysis  of  BOD  and  COD  concentration  in  wastewater  samples.  The  process was  performed  under  a  batch  system  by  varying  the  concentration  of  waste  (20%,  25%,  33%  and 50%)  and  residence  time  in  reactor  (0,5,10,15,20)  days.  The  result  of  such  treatment  from  day  0  to day 20, there is the highest efficiency in treatment for BOD 78.26% at concentrations of 50% and the COD is 71.15% at a concentration of 20%.
Co-Authors Adiwijaya, Saputra Adranandini Noor Anisa Aeni, Qurotul Aini Indriasih Aini Indriasih Ajat Sudrajat Ajat Sudrajat1 Amelia, Wulanda Amri, Salim Isfayama Anam, Muhammad Syaiful Andam S. Ardan Andhika, Bagas Dwi Andriyani, Durri Anik Sarminingsih, Anik Annisa Annisa Yumna Azzahro Ardanariswari Ardanariswari Ardhianto Gutomo Wisnupradhono Arifani Bestari Arumdani, Indah Sekar Ary Purwantiningsih Arya Rezagama Aufa Rahma Al-Hafidz Aulia, Mulyani Safitri Axelino Farrell Andika Azhari, Nadya Aulia Badrus Zaman Badrus Zaman Bambang Sutedjo Bambang Sutejo, Bambang Bimastyaji S. Ramadan Bimastyaji Surya Ramadhan Bnti Muflikah Brian Angga Kusuma Budi Prasetyo Samadikun Budi Warsito Budi Warsito Budiyono Budiyono Chintya Putri Agustin Chrisna Suhendi Destiasari, Ajeng Dewangga, Ria Saputra Dhea Andini Di Asih I Maruddani Dian Asri Puspa Ratna Dian Asri Puspa Ratna Dian Asri Puspa Ratna, Dian Asri Puspa Dwi Siwi Handayani Edi Prayitno, Edi Einstivina Nuryandani Eka Pratiwi Eka Septiana Sobriani Endang Purbowati Endro Sutrisno Fatmasari, Rini Fauz Rafid Syafiq Fitra Jaya Fitra Jaya Fitri Indriani Fitri Prabarani, Fitri Flora Resti Utami Ganjar Samudro Ganjar Samudro Ganjar Samudro Ghifar Rahman Haekal Awliya Muhammad Salman Hanif Kusumasasmita Hariyono, Mohamad Haryono Setiyo Huboyo Haryono Setiyo Huboyo Hassanuddin B, M. Sultan Hendri Setyawan Hizkia Christian Putra Setiadi ILHAM Imaniar Imaniar Imaning Tyas Fitri Imbar Agusetyadevy Immy Suci Rohyani Irawan Wisnu Wardana Irfan Alfarisi Irfan Tawakkal Irzan Tahar Ismartoyo Ismartoyo Ismartoyo Ismartoyo Iwan Jahruddin Jahruddin Jaya, Fitrah Jayawarsa, A.A. Ketut Junaidi Junaidi Koesanto, Stefani Made Ayu Artharini Kurniawan, Siswandaru Larasati, Dyanung Lintang Iradati Lion, Thomas Lisa Dwi Ningtyas Lutfiana Anisa Mala Nurilmala Maria Yustina Rensi Dartani MARIYATI Maya Widyana Dewi Mikdar, Syaeful Milda Restuti Iriany, Milda Restuti Mochamad Arief Budihardjo Mochtar Hadiwidodo Mochtar Hadiwidodo Muhammad Agung Wibowo Mukhtar, Mutia Kamalia Muliyadi Muliyadi Muliyadi Muliyadi Munir, Syaeful Mussadun Mussadun Mustika Balqis Muzammil, Moh Ningsih, Suhesti Nubatonis, Richnal Nugroho, Agung Nur Ilman Ilyas Nurandani Hardyanti Nurmawati Nurmawati Nurmawati Nurmawati Ojat Darojat Ojat Darojat Pitaloka, Eva Diana Pramesti, Ajeng Lakshita Prayoga, Surya Purbosari, Nita Ryan Purwantiningsih, Ary Purwanto Purwanto Purwanto Purwanto Purwatin, Ary Putra, Sayyida Rafi Hernanda Putri, Sasi Fhatmayani R Rizal Isnanto Rahmaddian, Rahmaddian Rahmasari, Synthia Nur Ramada Haqqo Mujtahida Ramadan, Bimastyaji Surya Rasidi, Muhammad Ratna Kustanti Ratna Purwaningsih Raysharie, Puput Iswandyah Renaldi Purba Renasmawan Peratama Reny Nurainy Risky Setiawan Rizal Adi Wirawan Saptian, Fiega Adhi Sardijo, Sardijo Sardjiyo Silviana Sindi Martina Hastuti Sindi Martina Hastuti Sindi Martina Hastuti, Sindi Martina Siti Utami Dewi Ningrum Sobriani, Eka Septiana Sucipto Sucipto Sudarno Sudarno Sudarno Sudarno Sudarno Sudarno utomo Sugito Sugito Suharno, Yusak Suhesti Ningsih, Suhesti Sumaji Suparti Suparti Suryanatha, Ida Bagus Sutrisno Endro Syaeful Mikdar Syafrudin Syafrudin Syafrudin Syafrudin Tarno Tarno Tegar Chalis Bani Titik Istirokhatun Vaneza Citra Kurnia Vaneza Citra Kurnia Vaneza Citra Kurnia, Vaneza Citra Wandika Wenas, Hylcia Alexandra Kimberly Wibowo, Angella Nurul Chanitta Widya Hartanto Winardi Dwi Nugraha Winardi Dwi Nugraha Wulanda Amelia Wulandari, Nisa A'rafiyah Tri Yovita Yovita Yuli Haryati Yusak Suharno Yusnaeni Yusnaeni, Yusnaeni ZAMAN, Badrus Zeferino Soares Lopes