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STUDI PENURUNAN PARAMETER BOD, COD DAN BOD/COD MENGGUNAKAN GABUNGAN VERTICAL ROUGHING FILTER DAN HORIZONTAL ROUGHING FILTER PADA LIMBAH CAIR DOMESTIK ARTIFICIAL

Jurnal Teknik Lingkungan Vol 2, No 2 (2013): Jurnal Teknik Lingkungan
Publisher : Diponegoro University

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ABSTRACTDomestic wastewater treatment is necessary given the high levels of pollutants such as BOD and COD content. In Indonesia there have been domestic wastewater treatment technology but the application is not yet efficient enough, India and African implement a technology that is roughing filter water treatment using filtration mechanism. This study aims to determine the reduction in BOD, COD and BOD / COD using a combination of vertical roughing filters (VRF) and horizontal roughing filter (HRF) in domestic wastewater. This study uses VRF and HRF series of three variations of flow of 277.7 ml/h, 138.8 ml/h and 92.5 ml/h, three variations of the filter media size, coarse with diametres Ɵ20mm, Ɵ15mm, Ɵ10mm , medium size Ɵ15mm, Ɵ10mm, Ɵ6mm and fine size Ɵ10mm, Ɵ 6mm, Ɵ3mm and two variations of types filter media are gravel and charcoal. From research result obtained a removal parameters of BOD and COD optimum flow variation are 277.7 ml/h for the BOD by 90% eficiency and the variation of flow 138.8 ml/h for removals parameters COD by eficiency 99 %. Variations of filter media types for the removal parameters BOD and COD is gravel, while the optimum filter media size for the parameters BOD is coarse and optimum filter media size for COD is medium.

STUDI PENURUNAN KONSENTRASI NIKEL DAN TEMBAGA PADA LIMBAH CAIR ELEKTROPLATING DENGAN METODE ELEKTROKOAGULASI

Jurnal Teknik Lingkungan Vol 2, No 2 (2013): Jurnal Teknik Lingkungan
Publisher : Diponegoro University

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Abstract Electroplating industrial wastewater containing heavy metals that are harmful so that need treatment in order to minimize impact on the environment. Most industries treat their wastewater by coagulation - flocculation. It is easy in the processing but the cost and the resulting large amount of mud, especially in metal-based industries. The experiments were conducted in batches of 1 liter for 120 minutes, direct current of 5 A and a voltage of 3 V at current densities of 40, 50, 60, and 70 mA/cm2 and type electrode Aluminum and Iron. From the experimental values obtained electrocoagulation efficiency is 95% Ni and Cu were 98% in current density 70mA/cm. Comparison between electrocoagulation and coagulation do to get a new alternative technology in electroplating wastewater treatment. In terms of cost and processing electrocoagulation technique has many advantages than coagulation. Therefore the best treatment alternative selection is electrocoagulation

STUDI PENURUNAN KROMIUM DAN NIKEL DALAM PENGOLAHAN LIMBAH CAIR ELEKTROPLATING DENGAN METODE ELEKTROKOAGULASI

Jurnal Teknik Lingkungan Vol 2, No 2 (2013): Jurnal Teknik Lingkungan
Publisher : Diponegoro University

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ABSTRACTEnvironmental pollution that caused by electroplating waste disposal into the environment can cause harmful effects for human life. Before it is discharged into the environment need the method to treatment this waste. Electro coagulation is one of the wastewater treatment methods which are interchangeable to treat the electroplating industrial waste. This electroplating waste contain heavy metals such as chromium (Cr), Nickel (Ni) and Copper (Cu). Electro coagulation experiments have been conducted with the independent variable which are the type of plate alumunium (Al) and Iron (Fe), and also Current density 40 mA/cm2, 50 mA/cm2, 60 mA/cm2 and 70 mA/cm2. This study uses a powerful current 5 Amperes, time operation 120 minutes, with the sampling time every 15 minutes, number of plate 4 pieces, 2 cm distance between electrodes. Based on experiments have been conducted that obtained best results at the highest current density removal efficiency of chromium allowance  99,60 % for using iron electrodes. Whereas for nickel removal, the best results at the highest current density removal efficiency of nickel allowance  96,20 % for using alumunium electrodes. Other measurements in this study that may affect the process of electro coagulation include pH, temperature, TSS, TDS and turbidity.

STUDI PENURUNAN KANDUNGAN TOTAL COLIFORM DENGAN MENGGUNAKAN KOMBINASI VERTICAL FLOW ROUGHING FILTER (VRF) DAN HORIZONTAL FLOW ROUGHING FILTER (HRF) PADA AIR BUANGAN DOMESTIK ARTIFISIAL

Jurnal Teknik Lingkungan Vol 2, No 2 (2013): Jurnal Teknik Lingkungan
Publisher : Diponegoro University

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ABSTRACTThis research is aims to reduce the content of total coliform bacteria in domestic wastewater using a combination of vertical flow roughing filter (VRF) and horizontal flow roughing filter (HRF) for each variation of flow rate, the type and the size of filter media. Domestic wastewater influent is used as an artificial wastewater containing total coliform bacteria sample 2400 MPN/100 ml. The results of the best drop reaches 0 MPN/100 ml sample contained in VRF combination with medium-sized fine charcoal filter (10 mm,6mm and 3mm) on the flow rate 0.0926 liters/hour.Variations in discharge and the size of filter media for total coliform bacteria indicates a decrease inversely proportional relationship, where the smaller size of the discharge and the filter media decreased total coliform bacteria. As for the type of filter media, charcoal filter media types work better than gravel to reduce the content of total coliform bacteria.

STUDI PENURUNAN KONSENTRASI KROMIUM DAN SENG DALAM LIMBAH CAIR ELEKTROPLATING ARTIFICIAL DENGAN METODA ELEKTROKOAGULASI

Jurnal Teknik Lingkungan Vol 2, No 3 (2013): Jurnal Teknik Lingkungan
Publisher : Diponegoro University

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Electrocoagulation is selected method to decrease concentration of heavy metal Cr and Zn, because it is easy in operation without using chemical addition that harmful for human. The purpose of this research studied the influence of efficiency toward the loading of concentration and the performance of electrode during electrocoagulation process used on continuous system. This experiment used three types of artificial wastewater, they were waste 1 contained 30.11 mg/L of Cr, 50.61 mg/L of Zn, 50.14 mg/L of Cu, waste 2 contained 41.08 mg/L Cr, 105.30 mg/L Zn, 103.25 mg/L Cu, and waste 3 contained 50.07 mg/L of Cr, 202.58 mg/L of Zn, 208.61 mg/L of Cu. This experiment used aluminum electrode with dimension of 10 cm x 15 cm, voltage of 12 volt, current strength of 5 ampere, and the operating time was 360 minutes by taking sample every 30 minutes.  There was the washing of electrode every 120 minutes to increase the performance of electrode. Based on the research had been obtained the optimum time at each sample was 120 minutes which research up to 97% of efficiency and the optimum time of using electrode was 240 minutes. The best reduction of Zn reached 97.68% with the initial concentration of 50.61mg/L.

STUDI PENURUNAN KONSENTRASI KHROMIUM DAN TEMBAGA DALAM PENGOLAHAN LIMBAH CAIR ELEKTROPLATING ARTIFICIAL DENGAN METODE ELEKTROKOAGULASI

Jurnal Teknik Lingkungan Vol 2, No 3 (2013): Jurnal Teknik Lingkungan
Publisher : Diponegoro University

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Electroplating industries produce wastewater containing heavy metals such as copper and chromium that can pollute the environment because they are toxic and harmful to human health despite a small quantity. However, they require a wastewater treatment that could decrease heavy metal waste. Electrocoagulation is the selected method because it has high ability to treat heavy metals wastewater and the equipment is simply enough. The experiments were conducted with artificial wastewater with varying concentrations of Cr 30, 40 and 50 mg/ l and Cu respectively 50, 100 and 200 mg/l. This study used an electrode type Aluminum (Al) that had distance 1.5 cm each electrode, 5 ampere current strength, sampling time every 30 minutes, time operation 360 minutes with an electrode washing every 120 minutes. From the experimental result had been obtained the best efficiency to reduce Cr and Cu occurred in minute 120 which up to 97 %. Aluminum electrode having saturation began at minute 270.

STUDI PENURUNAN PARAMETER TSS DAN TURBIDITY DALAM AIR LIMBAH DOMESTIK ARTIFISIAL MENGGUNAKAN KOMBINASI VERTICAL ROUGHING FILTER DAN HORIZONTAL ROUGHING FILTER

Jurnal Teknik Lingkungan Vol 2, No 2 (2013): Jurnal Teknik Lingkungan
Publisher : Diponegoro University

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This study used a combination of vertical roughing filter (VRF) and horizontal roughing filter (HRF) to reduce the content of Total Suspended Solid (TSS) and Turbidity in domestic wastewater. Variations study was only performed on the reactor VRF. Variations used of waste water discharge Q1 = 0.2778 l/hr, Q2 = 0.1389 l/hr, and Q3 = 0.0926 l/hr; and types of media used is charcoal and gravel with coarse size (øӨ20-10 mm), medium (Ө15-6 mm), and fine (Ө10-3 mm). Optimum conditions in the reactor decreased TSS and turbidity at small flow rate or Q3 = 0.0926 l/hr, with a charcoal filter media type, the size of the fine filter media (Ө10-3 mm), with an efficiency of 98,58% and 99,71%.

PENGARUH VARIASI KONSENTRASI DAN DEBIT PADA PENGOLAHAN AIR ARTIFISIAL (CAMPURAN GREY WATER DAN BLACK WATER) MENGGUNAKAN REAKTOR UASB

JURNAL PRESIPITASI Vol 9, No 1 (2012): Vol 9, No 1 (2012)
Publisher : Department of Environmental Engineering

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In this study Mixture of domestic grey water and black water were investigated. This Mixture consists of Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solid (TSS), and  Nitrate  (NO3).  This  research  investigated  the  influence  of  concentration  and  flow  variation parameters  to  treating  the  Mixture  Grey  Water  and  Black  Water.  Effluent  quality  of  decreasing concentration varied by the concentration and flow recorded BOD was about 102-544 mg/l, COD was about 287-1.230 mg/l, TSS was about 280-780 mg/l and for treating  nitrate the result was fair enough than others was about 4-12 mg/l.  According to the flow variation resulted the retention time are 4, 6 and 8 hours. The best effluent quality was happened 878 mg/LCOD, and varied by flow are 0,125. The results  of  research  showed  the  higher  concentration  will  decrease  the  value  of  BOD  and  Nitrate removal, due to the influence of pH.The higher flow will decrease the value of BOD and increase COD, TSS, and Nitrate removal, and  optimum flow condition was 0,125 l/hour.

STUDI PENURUNAN KEKERUHAN DAN TOTAL SUSPENDED SOLIDS (TSS) DALAM BAK PENAMPUNG AIR HUJAN (PAH) MENGGUNAKAN REAKTOR GRAVITY ROUGHING FILTER (GRF)

JURNAL PRESIPITASI Vol 8, No 1 (2011): Vol 8, No 1 (2011)
Publisher : Department of Environmental Engineering

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This research investigated the influence of flowrate and turbidity and total suspended solids level to detention time in GRF reactor. The difference of flowrate could produce the difference of turbidity and total suspended solids level at certainly detention time. The research objects were rain water in rain water reservoir and GRF on laboratory bench scale. The research concluded that optimum flowrate is 5 mL/s with 78% reduction efficiency of turbidity and 79%  reduction efficiency of total suspended solids level which was 100 minutes operating.

PEMANFAATAN LUMPUR AKTIF DAN EM4 SEBAGAI AKTIVATOR DALAM PROSES PENGOMPOSAN LIMBAH KULIT BAWANG DENGAN SLUDGE

JURNAL PRESIPITASI Vol 9, No 2 (2012): Vol 9, No 2 (2012)
Publisher : Department of Environmental Engineering

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Pengolahan air limbah PT. Indofood CBP menghasilkan sludge yang belum terolah dengan baik. PT. Indofood membutuhkan suatu teknik pengolahan sludge sebagai wujud komitmennya terhadap lingkungan. Tujuan penelitian ini adalah untuk mengetahui kondisi optimum pengomposan aerobik sludge dan kulit bawang. Kulit bawang yang digunakan adalah, yaitu kulit bawang dari divisi pengupasan bawang PT. Indofood CBP. Pada penelitian ini dilakukan analisis terhadap kandungan C-Organik, N-Total, P-Total, K-Total, C/N rasio, dan kadar air pada kompos tiap lima hari sekali. Hasil penelitian didapatkan C/N rasio aktivator EM4 adalah variasi A1 (2,5 kg sludge + 2,5 kg kulit bawang) sebesar  19,74%, B1 (3,3 kg sludge + 1,7 kg kulit bawang) sebesar 18,61% dan C1 (4,2 kg sludge + 0,8 kg kulit bawang) sebesar 14, 17%. Sedangkan C/N rasio aktivator lumpur aktif adalah variasi A2 (2,5 kg sludge + 2,5 kg kulit bawang) sebesar 19,81%, B2 (3,3 kg sludge + 1,7 kg kulit bawang) sebesar 19,00%, dan C2 (4,2 kg sludge + 0,8 kg kulit bawang) sebesar 14, 76%. Hal ini menunjukkan bahwa semakin banyak penambahan lumpur, semakin baik C/N rasio kompos.

Co-Authors Agustin Wijayanti Ahmad Naufal, Ahmad Amelia Fitriani, Amelia Andrianingsih, Rizki Tri Arief Laila Nugraha Aris Nurhidayah Ariyanti, Meishinta Arya Rezagama Bagaskoro Prasetyo Putro, Bagaskoro Bagus Sujiwo Bimastyaji S. Ramadan, Bimastyaji S. Bimastyaji Surya Ramadan Citra Smaradahana, Citra Cyntia Cyntia, Cyntia Danny Perkasa, Danny Dewi Masita Diah Indra Rini, Diah Dian Asri Puspa Ratna, Dian Asri Puspa Dian, Adistia Dwi Siwi Handayani Dwi Siwi Handayani Elisabeth Priscila, Elisabeth Estuning Mugi Rahajeng, Estuning Etika Christina Retno Murti, Etika Fachrian Aji, Fachrian Faiq Rahman, Faiq Fajriharish Nur Awan, Fajriharish Nur Fakhrian Aji Rahmantyo Fariza Siswanti Fauzia Rahmiyati Yazid Fildzah, Amalia Fitriana, Greace Flora Resti Utami Gabroni Sagala Hakiem, Rahmat Tubagus Hutabarat, Irma Natasya Ian Septyana Ika Bagus Priyambada Ika Bagus Priyambada Imaning Tyas Fitri Irawan Wisnu Wardana Irawan Wisnu Wardhana Irawan Wisnu Wardhana Irma Oktavia Irma Suryanti Junaidi Junaidi Juntara Semilu Rosesar, Juntara Khairul Amri Kusumawardani, Yustika Lintang Iradati, Lintang Lokahita, Baskoro Lucitawati, Erika M. Arief Budihardjo Maulana Khafid A, Maulana Mazlani Firdausya Rohim, Mazlani Mei Ekowati, Mei Meirianti Zulfa Catur P Mochtar Hadiwidodo Muthi’ah, Hilma Nisa, Arum Choirun Nurul Ulfia, Nurul Oktiawan, Wiharyanti Prasasti, Riski Adyan Priska Septiana Putri Puspa Rini, Puspa Rachmad Ardhianto Rachmanita Nofitasari Raden Abadi Rulian E Rantidaista Ayunin Walidaini, Rantidaista Retno Suryani, Retno Rizki Januarita, Rizki Ryanti Christianna Sembiring, Lucy Amena Sinaga, Glory Natalia Sindi Martina Hastuti, Sindi Martina Sri Sumiyati Syafrudin Syafrudin Taufiq Edi Laksono, Taufiq Vaneza Citra Kurnia, Vaneza Citra Wenny Dwi Retna Prihartanti Widodo Widodo Wiharyanto Oktiawan Winardi Dwi Nugraha Winardi Dwi Nugraha Zulfaqar Maulana