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INDONESIA
Jurnal Teknik Lingkungan
Published by Universitas Diponegoro
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Core Subject : Social,
Environmental Science
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Articles 99 Documents
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STUDI IDENTIFIKASI PENGELOLAAN AIR LIMBAH DOMESTIK di KECAMATAN MIJEN, GUNUNGPATI, GAJAHMUNGKUR dan SEMARANG SELATAN KOTA SEMARANG Alfiza Fahmi; Wiharyanto Oktiawan; Mochtar Hadiwidodo
Jurnal Teknik Lingkungan Vol 2, No 2 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Abstract

Sanitation refers to the hygienic and proper management, collection, disposal or reuse of human excreta (feces and urine) and community liquid wastes to safeguard the health of individuals and communities. Sanitation have three primary objectives:Improving health conditions, promoting dignity of living or enhanced quality of life,  and protecting the environment. The combined positive effects of these conditions lead to wider economic benefit. One of sanitation component is domestic wastewater which is in fact haven’t use the proper management . Proper management can be decided by assessing current situation (sourced by primary and secondary data), gap analysis based on three aspects which is institutional aspects, technical aspects, financing aspects, legal aspects and community participation. This study identification focused on determining domestic wastewater processing system based on population density, the area physical condition, the source of water used, and the ability to finance. Whereas scope area of this identification study is Mijen, Gunungpati, Gajahmungkur and South Semarang at Semarang city. Mijen and Gunungpati has similarity at population density which is less than 150 people per ha and the area physical condition such as high permeability, ground water depth >50 meters, dominated by 2-15% slope, and also from the financial side that  range income level 1,5-3 million rupiah is still suitable for septic tank as it’s technology an on site system as its alternative system. In the other side, Gajahmungkur and South Semarang also has similarity at water used sourced which is 72% and 75%  respondent use PDAM as primary source and generally has middle class of  permeability. Both of this sub district also has population density more than 150 people per ha and the area dominated by 2-15% slope range which is all of those factor suitable for sewerage conventional as its technology.This study help the reader to make informed about the proper prossesing system of each study area and furthermore to achieve sanitation primary objectives.
ANALISIS PENGARUH BUANGAN LIMBAH DOMESTIK TERHADAP STATUS MUTU AIR DENGAN METODE INDEKS PENCEMARAN (Studi Kasus : SungaiBanger, Kecamatan Semarang Timur) Novi Melawati; Sudarno Sudarno; Dwi Siwi Handayani
Jurnal Teknik Lingkungan Vol 2, No 4 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Abstract

Banger River is the river with a length of 6.5 km and coverage area of 524,46 ha.The determination status of water quality in Banger River necessary to know how the water pollution in Banger River and recommendations related to the control of pollution river.This research aims to analyze the causes factors changes concentrations of TSS, BOD, COD, DO, pH, Amonia, and Nitrate; calculate the pollution indexon all sampling point inBanger River, and analyze the influence of concentrations of TSS, BOD, COD, DO, pH, Amonia, and Nitrateto water quality status of Banger River.Pollution index were analyzed based on KepMen LH No. 115 in 2003 about the determination the Status of Water Quality Guidelines by taking 5-point sampling and dividing the region segmentation into 4 segments. From this research, a pollution index values are calculated at the BGR point 1 is 8,17; BGRpoint 2 of the resettlement 9,17; BGRpoint 3 of the resettlement 5,17; BGRpoint 4 of the resettlement 7,03 ; and at that BGRpoint5 is 7,48. Based on KepMen LH No. 115 in 2003 about the determination of the Status of Water Quality Guidelines, the value of the IP is at 5,0 < PIj ≤ 10 categorized into polluted medium. So the water quality status at all Banger River the segmentation categorized polluted medium.
Penurunan Kadar BOD dan Amonia dalam Limbah Domestik Dengan Teknologi Fito-Biofilm Menggunakan Tumbuhan Duckweed (Lemna minor) Dengan Media Biofilter Random (studi kasus: Perumahan Graha Mukti, Tlogosari, Semarang) Risna Damayanti Sihotang
Jurnal Teknik Lingkungan Teknik Lingkungan Volume 1 Nomor 1 Tahun 2012
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Abstract

Along with the increasing population growth also resulted in an increase in the amount of waste generated. One of the pollutants contained in domestic sewage are BOD and ammonia content. The technique used is a combination of process phytoremediation, which is using duckweed plants with biofilm formation using a biofilter random. The purpose of this study was to determine the ability of the combined application of fito-biofilm processes in decreasing the levels of BOD and Ammonia in domestic wastewater and the efficiency of decreasing these concentrations. In this study, three reactors are used with the continuous system and varying the time detention in the reactor. The detention time used were 24, 12, 8, 6, 4, and 2 hours. From the results of research conducted, showed that the reduction in BOD and ammonia concentrations reach 99% and 66.61% for BOD and Ammonia. With values ​​for BOD reduction from 180.2 mg / l to 1.81 mg / l and for ammonia, from 5.42 mg / l to 1.81 mg / l.
ANALISIS RESIKO CEMARAN DEBU (TSP) AKIBAT ASAP PABRIK TERHADAP PEKERJA DAN MASYARAKAT SEKITAR (Studi Kasus : PT. Inti General Yaja Steel, Semarang) Yanida Ratnasari
Jurnal Teknik Lingkungan Vol 2, No 1 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Abstract

The stack of the factory production process can produce dust pollutants (TSP) that dangerous and  carcinogenic. PT. Inti General Yaja Steel Semarang is a kind of steel smelting industry that took out the impurities in dust that spread to the residential area around so that residents can affect the health of inhalation in humans. This research was aimed at analysing the risk from related pollutant for people who live or work in the vicinity of industries. This research consists of four steps i.e hazard identifications, exposure assessment, toxicity assessment, and risk characterization. Four locations had been selected for field sampling. Hazard identifications to dust (TSP) concentration was mirrored to ambient air standard that maximal concentration for the TSP is 230 μg/m3. On exposure assessment the TSP concentration in PT.IGYS, Ngepos II street, Sugriwo II street and Krapyak complex exceed ambient air standard (SK. Gub. Jateng No. 08/2001). Toxicity assessment revealed that TSP intake in all place was safe since the calculated intake were still under maximal intake 0,0452 mg/kg.day. Based on risk characterization result, it can be concluded that level of risk in all places was less than unity (<1) so it implies that in those area was safe for daily activities in specified time with respect to dust (TSP). However the relative high risk was pointed out to the Krapyak complex and the lowest risk was in Ngepos II street.
STUDI PENURUNAN KONSENTRASI KROMIUM DAN SENG DALAM LIMBAH CAIR ELEKTROPLATING ARTIFICIAL DENGAN METODA ELEKTROKOAGULASI Ryanti Christianna; Ganjar Samudro; Dwi Siwi Handayani
Jurnal Teknik Lingkungan Vol 2, No 3 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Abstract

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.
PENENTUAN DAYA TAMPUNG BEBAN CEMARAN INDIKATOR PENCEMAR BOD (BIOLOGICAL OXYGEN DEMAND) DENGAN SOFTWARE QUAL2E (Studi Kasus : Sungai Tuntang, Jawa Tengah) Ivan Ilianta Ginting
Jurnal Teknik Lingkungan Teknik Lingkungan Volume 1 Nomor 1 Tahun 2012
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Abstract

Tuntang river is part of the watershed Tuntang, with the main river length ± 111.39 km. the amount of pollution of Tuntang river capacity need to know at any time to determine the condition of the river Tuntang used for various activities. Therefore, it is necessary to identify indicators of load capacity of pollutant contamination Biological Oxygen Demand (BOD) using QUAL2E software. The simulation results at minimum flow (dry season) compared to the standard quality PP No. 82 Tahun 2001 found that Tuntang River can fullfill the quality standard BOD contaminant load class III (with a capacity of 41.73 to 772.03 kg / day) at km 14 km -18, and 85-106 km and meets the standard contaminant load class IV (with a capacity of 59.62 to 2560.521 kg / day) at 8-46 km and 81-109 km. Simulation results on maximum discharge (wet season) compared to the standard quality PP No. 82 Tahun 2001 found that Tuntang River meets the quality standard BOD contaminant load class III (with a capacity of 142.97 to 2907.51 kg / day) at km 8 - 44 and km 81-106 and can fullfill the quality standard contaminant load class IV (with a capacity of 440.84 to 10055.89 kg / day) at KM1-107.
PENGARUH FLUKTUASI SALINITAS TERHADAP NITRIFIKASI OLEH BAKTERI YANG DIAMBIL PADA ESTUARI SUNGAI BANJIR KANAL BARAT – SEMARANG Maulina Harsitoningrum
Jurnal Teknik Lingkungan Vol 2, No 1 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Abstract

Many marine environmental pollution caused by industrial waste content comes from a variety of human activities is increasingly rising. Salinity, nitrogen and high phosphate present in industrial waste discharged directly and will cause damage to the receiving water bodiesHigh content of nutrients that will cause water pollution in the ecosystem. Presence of phosphate in the water will cause eutrophication. With a highly eutrophic conditions allow for the rapid growth of algae (bloom) due to the availability of excess phosphate.In this research, sampling location of the research team selected one is where the results are Sea Canal River West Flood Canal. Sea Canal River West Flood Canal has characteristics that can be seen from the test results of baseline characteristics by using a tool such as the Water Quality Cheker namely: temperature, pH, salinity, turbidity (NTU), Dissolved Oxygen (Dissolved Oxygen), and TDSThe study was conducted by observing the fluctuations in salinity that occur in nitrification by bacteria in each reactor. NH4 +-N using NH4Cl is also a necessary nutrient for bacterial nitrification. Salt water is added varying levels are: 0%, 0,5%, 1,5%, 3%, 5%, and 7%.
PENGOMPOSAN K1UDGE HASIL PENGOLAHAN LIMBAH CAIR PT. INDOFOOD CBP DENGAN PENAMBAHAN LUMPUR AKTIF DAN EM4 DENGAN VARIASI SAMPAH DOMESTIK DAN KULIT BAWANG Bening Laksa Intan; Syafrudin Syafrudin; Winardi Dwi Nugraha
Jurnal Teknik Lingkungan Vol 2, No 3 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Abstract

Sludge from food industry potentially treated with composting methods because of any organic matter such as carbohydrates, ptoteins, fat, coarse fiber, water and macro nutrient such as nitrogen and phosphorus. This research will be conducted composting process that Sludge mixed with domestic wastes and onion skins. Composting process used two activators. They are Effective Microorganism 4(EM4) and aktivator  from activated Sludge. Compost matured have meet the requirerements of SNI 19-7030-2004. The best result at variations on activator EM4 with ratio K1udge : domestic wastes : onion skins = 6:1:1 eith result C-organic 13,56%,N-total 0,91%, P-total  0,5%, K-total 0,53% and the C/N ratio 14,37. In the activator of activated K1udge with same variation show result C-organic 12,62%,N-total 0,67%, P-total  0,42%, K-total 0,5% and the C/N ratio 18,98.
Pengaruh Tingkat Kebisingan Terhadap Kemungkinan Resiko pada Daya Dengar Pekerja di Unit Rolling Mill 2 PT. Inti General Yaja Steel, Semarang Adi Gadang Wiratmoko
Jurnal Teknik Lingkungan Teknik Lingkungan Volume 1 Nomor 1 Tahun 2012
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Abstract

The growth of manufacturing industries in Indonesia, especially the rapidly growing steel industry, It also has the potential to cause noise both within the workplace and the environment because machines - used production. Noise can disturb workers which can harm the health impact on hearing loss if the exposure for a long time, it can also cause deafness. In this study discusses the effect of noise level on the possible risks of the power to hear the workers at Rolling Mill Unit 2 PT. Inti General Yaja Steel, Semarang. Noise levels in Rolling Mill 2 units ranged from 75-95 dBA measurements in each grid. Many grid areas still  exceed the noise standards based on the Decree of the Minister of Manpower No.KEP-51/MEN/1999. Audiometri tests were performed on 10 workers in the unit Rolling Mill 2 in PT Inti General Yaja Steel, shows that as many as 5 workers suffered minor deaf right ear and left ear, 1 person working experience being deaf in the right ear, 1 person working experience being deaf in the left ear, and 4 workers have the right and left ear conditions are still normal. Final Purpose of the study is expected to be minimized impact to reduced hearing of workers by monitoring and setting rules on sanctions (disciplinary action) for workers who do not keep the rules in the use of EPE (Ear Protective Equipment) is earplug.
PEMANFAATAN LIMBAH AIR CUCIAN BERAS SEBAGAI BAHAN BAKU PEMBUATAN BIOETANOL PADAT SECARA FERMENTASI OLEH Saccharomyces cerevisiae Hervina Tri Oktavia
Jurnal Teknik Lingkungan Vol 2, No 1 (2013): Jurnal Teknik Lingkungan
Publisher : Departemen Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

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Abstract

Solid bioethanol is a solid fuel non-natural made by way of investment in bioethanol liquid fuel into the solid residue oil is stearic acid. Rice water as raw material for bioethanol manufacture solid because it has a carbohydrate content of 43% which can be hydrolyzed to glucose. Glucose can be converted into alcohol (ethanol) by fermentation. This study aims to determine the calorific value of solid bioethanol from waste rice water with a variety of tape yeast, time of fermentation, and variations of the addition of stearic acid. In this study, rice water hydrolyzed with strong acid HCl 7%. Furthermore tape fermented using yeast (Saccharomyces cerevisiae) with a variation of 25 grams, 35 grams and 45 grams for 3 days, 6 days, 9 days, and 12 days. The next stage is distilled in the temperature range 78 - 80oC. Results distillate with 77% plus levels of stearic acid with a variety of 100 grams, 150 grams and 200 grams. Calorific value resulting from the ethanol content of 77% with the addition of three variables stearic acid is 8760 kcal/kg, 9630 kcal/kg, and 10065 kcal/kg. The results of the solid old flame bioethanol best obtained on the addition of stearic acid is 200 grams for 6 minutes per 10 gram sample.

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