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Pengaruh Kecepatan Angin, Kelembapan dan Suhu Udara terhadap konsentrasi SO2 Ambien dan Pemetaan SO2 Amben di Sekitar PT. Kawasan Industri Medan
Get PDFThis study aims to determine the effect of wind speed, humidity and air temperature on the concentration of SO2 in ambient air around PT. Medan Industrial Area (KIM) and to find out the description of SO2 concentration mapping around KIM. This study was limited to KIM Phase I and II and sampling was carried out at 6 (six) points. The results obtained were the lowest SO2 concentration of 58.63 µg / m3 and the highest concentration was 112.91 µg / m3. Based on the linear regression test, the result is that the higher the wind speed, the concentration of SO2 in the area around KIM is lower and 15.1% SO2 concentration is influenced by wind speed. The higher the humidity of the air, the concentration of SO2 in the area around KIM is lower and 26% of the concentration of SO2 is influenced by humidity. The higher the air temperature, the higher the concentration of SO2 in the area around the KIM and 68.5% the concentration of SO2 is influenced by air temperature. Based on the results of mapping using the Surfer 11 version, the results obtained in the morning the highest SO2 concentration was in the southern part of KIM and the lowest SO2 concentration was in the northwestern part of KIM. During the day, the highest SO2 concentration was in the eastern part of the KIM and the lowest SO2 concentration was in the northwestern part of KIM
Timbulan, Komposisi dan Karakteristik Sampah Bahan Berbahaya dan Beracun (B3) pada Sarana Kesehatan
Get PDFHazardous Solid Waste (HSW) are typically found on the packaging of the products with explosive, flammable, and toxic features, which are the characteristics of HSW. This waste is not only generated from industrial activities but also generated from household, commercial, and institutional activities. This study aims to analyze the generation, composition and characteristics of HSW from health facilities such as hospitals and health centers, with case studies in Padang City. Measurements of generation are carried out in weight and volume units, composition measurements by type of use, and characteristics measurement based on literature and regulations. Method of measurement was in accordance with SNI 19-3964-1994, with 11 samples and carried out for eight days in a row. The result of measurement shows that HSW generation at health facility was 0.02354 kg/person/day in weight unit or equal to 0.18600 l/person/day in volume unit. The HSW were come from the packaging of body care medication and other medical wastes with the characteristics classified as toxic, corrosive and infectiou
Studi Dinamika Kualitas Air Daerah Aliran Sungai Batang Arau di Propinsi Sumatera Barat
No full textBatang Arau banyak mengalami polusi air, pencemaran air sungainya memberikan kerusakan DAS dan peningkatan sedimen. Ini mengakibatkan banyaknya masuk buangan limbah cair yang bersumber dari limbah penduk dan limbah industri. Batang Arau adalah salah satu sumber air baku terutama sumber air baku untuk kebutuhan sehari dan sekarang kualitasnya sudah sangat menurun. Tinjauan mutu kualitas air sesuai dengan kriteria pada Peraturan Pemerintah No.82 tahun 2001 tentang pengelolaan kualitas air dan pengendaliannya. Metode yang dipakai dalam pengujian ini metode SNI mengenai parameter kualitas air dan standar methode untuk pemerisaan air dan air limbah, Apha washington DC serta beberapa alat untuk pengujian mutu, data sekunder sebagai pendukung data dan lokasi letak penelitian contoh uji. Tujuan penelitian ini adalah untuk menguji, meneliti dan evaluasi kualitas air di berbagai tempat di Sungai Batang Arau . Kualitas air sangat dipengaruhi pencemaran lingkungan daerah aliran sungai, oleh rumah potong hewan, kegiatan pertanian yang terletak di hulu, serta kegiatan industri karet yang terletak di bagian hilir sungai. Jumlah suspended solid jauh lebih tinggi di aliran sungai menurun. Itu adalah sekitar 144 mg/L di hilir dan hanya 74 mg/L di hulu lokasi. Konduktivitas daya hantar listrik adalah sekitar 114–189 Umhos/cm. The BOD dan COD nilai yang variabel sekitar 3,4-9,7 mg/L. Padatan Terlarut yang terkandung dalam air sungai Batang Arau juga akan mempengaruhi tingkat beban pencemaran dalam air yang dapat menyebabkan penurunan kualitas air sungai Batang Arau, nilai BOD berkisar 5,3 mg/L – 18,3 mg/L dan nilai COD 13,7 mg/L - 50,7 mg/L. Dalam air sungai Batang Arau padatan terlarut hulu bagian 112- 124 mg/L dan di hilir 118 –144 mg/L. DO adalah variabel di hulu karena air dari berbagai anak sungai berkisar 4,8 – 7,3 mg/L. Kualitas air yang berubah – rubah (tercemar) disebabkan limbah cairan yang masuk ke aliran sungai. Berdasarkan fakta-fakta IPAL pengolahan air limbah tidak beroperasi pada kondisi yang optimal. Operasi rencana pengolahan air limbah yang efektif dan peraturan pembuang limbah cair sebelum lepas ke sungai diharapkan untuk memenuhi standar kualitas air nasional. Pengolahan limbah cair dengan treatmen fisika, kimia dan biologi menjadikan kualitas air bagus
Studi Perancangan Dan Pemanfaatan TPS 3R Untuk Sampah TPS (Tempat Pengolahan Sampah Rumah Tangga
Get PDFAs the population increases, waste generation and composition will increase. Therefore, there is a need for planned and effective waste handling so that the problem of waste can be resolved in accordance with the 3R (Reuse, Reduce, and Recycle) concept. The aim of this research is to calculate the amount of waste generation and the composition of domestic waste produced by the residents of Medan Denai, and also devise the type of 3R Waste Treatment Plant for the District of Medan Denai. The method for measuring the generation and composition of waste are based on SNI 19-3964-1994, that is based on income level. Meanwhile, the typical planning of TPS 3R is obtained from the calculation of waste generation which is associated with the projection of population. The result showed that the average of household waste in the District of Medan Denai was 0.265 kg/person/day or 1.4 l/person/day. The composition of household waste generation in the District of Medan Denai is dominated by food waste 65.38 %. It is estimated that in 2026, the waste generation produced in the District of Medan Denai would reach about 41,593.7 kg/day. The economic potential that can be generated by using 3R concept is estimated reaching about Rp11,687,190 - Rp85,370,971 per day. Managing waste with 3R concept require a TPS with 1,488.24 m2 of area to process the household waste, with the estimated cost required to build the facility is Rp598,960,540 and the operational cost is Rp104,000,000 per month
Sebaran Nilai Daya Hantar Listrik dan Salinitas pada Sumur Gali di Pesisir Pantai Kecamatan Padang Barat
Get PDFThis study aims to determine the distribution of electrical conductivity and salinity values in dug well water as an indication of sea water intrusion. The study was conducted on the coastal area of Padang Barat District with 30 sample points and variation of 0-500 m distance from shore to the land. Measurement of electical conductivity values is measured in the field using conductivity meter while for salinity by argentometric method to analyze chloride ions which are then converted to Knudsen Equation. The range of conductivity values is 163.4-5260,8 μS / cm while the salinity value is 0.303-0.564 ‰. The relation of electrical conductivity and salinity values shows a very strong correlation with a value of 0.9373. The relation of the electrical conductivity value with the distance from the shoreline and the depth of the well shows no correlation with values of 0.264 and 0.054. The salinity value with the distance from the shoreline and the depth of the well also showed no correlation with the values of 0.205 and 0.003. The comparison of measured values with groundwater classification known as 2 points is slightly brackish water as an indication of sea water intrusion found in Purus and Berok Nipah sub-districts
Analisis Konsentrasi SO2 dan CO Menggunakan Model Gaussian Line Source Di Udara Ambien
No full textPurpose of this study to analyze concentration of SO2 and CO at Tanjung Morawa Toll Gate and Amplas Toll Gate with Gaussian Line Source modeling. Based on the measurement of ambient roadside air quality at Tanjung Morawa Toll Gate and Amplas Toll Gate, CO and SO2 concentrations still meet the ambient air quality standard according to PP. 41 year 1999. The highest concentration of CO at Tanjung Morawa Toll Gate is 447,06 μg/m3 and at Amplas Toll Gate is 389,54 μg/m3 while The highest concentration of SO2 at Tanjung Morawa Toll Gate is 97,7 μg/m3 and at Amplas Toll Gate is 62.51 μg /m3. Based on the calculation using Gaussian Line Source model, the highest CO concentration at Tanjung Morawa Toll Gate is 263,16 μg/m3 and at Amplas Toll Gate is 258,16 μg/m3 while The highest concentration of SO2 at Tanjung Morawa Toll Gate is 1,64 μg /m3 and at Amplas Toll Gate is 1.32 μg/m3. validation test results with IOA, NMSE, FB, and Fa2, Gaussian Line Source model can be applied at Tanjung Morawa Toll Gate and Amplas Toll Gate for CO parameters. Meanwhile Gaussian Line Source model can not be applied for SO2 parameters at Tanjung Morawa Toll Gate and Toll Gate of Amplas
Studi Penurunan Chemical Oxygen Demand (COD) Pada Air Limbah Domestik Buatan Menggunakan Biofilter Aerob Tercelup dengan Media Bioring
Get PDFThe purpose of this research is to know the effect of debit variation on Chemical Oxygen Demand (COD) reduction efficiency in artificial domestic wastewater after being processed using aerobic biofilter reactor. The biofilter was maintained at continues flow and aerobic state. The debit variations used were 0.56 l/h for 72 hours retention time, 0.83 l / h for 48 hours retention time and 1.67 l/h for a 24 hour retentione time. Efficiency of COD decreased at 0.56 l/hr variation was 84%, at 0.83 l / h was 86% while at 1.67 l/h was 75%. The effluent of domestic wastewater treatment using aerobic biofilter with bio ring media has fulfilled the Minister of Environment and Forestry Regulation No. 68/2012 on Quality Standard of Domestic Wastewater
Dinamika Konsentrasi Oksigen Terlarut Akibat Limbah Cair Domestik di Hulu Sungai Citarum Menggunakan Model Dinamik
Get PDFHigh pollutant load from municipal discharges around the upstream of Citarum River contributes to the water quality problems of the river. Dynamic modelling was developed to analyze the behaviour of dissolved oxygen in upper of Citarum river using STELLA® as a tool. The modelling area consist of four segments namely Wangisagara, Jembatan Koyod, after Cisirung WWTP and Nanjung. Calibration and validation was done to get the most approaching simulated data to actual data. Average Mean Error (AME) and Average Variation Error (AVE) for all segments was 1.65% and 5.8%, therefore the developed model was valid. Sensitivity analysis shown that the dynamic of dissolved oxygen in upper of Citarum river was most affected by BOD load from municipal sources, decay coefficient of BOD (Kd), maximum rate of photosynthesis (pm) and fractional duration of daylight (f)
Biosorpsi Kromium (Cr) Pada Limbah Cair Industri Elektroplating Menggunakan Biomassa Ragi Roti (Saccharomyces cerevisiae)
Get PDFElectroplating industry is one of the industries producing liquid waste containing heavy metals. Among the heavy metals contained in the liquid waste is Chromium (Cr) which has a high toxicity. One technology that can be applied to eliminate Cr metal in liquid waste is by the method Biosorption using biomass derived from yeast bread (Saccharomyces cerevisiae). This study aimed to study the ability of bread yeast biomass (saccharomyces cerevisiae) in removing Cr metal on variations in biosorbent weight of 0.25; 0.5 and 0.75 grams, mesh size 80; 100 and 140 and contact time 1; 2; 3 and 4 hours. The results showed that the highest Cr removing efficiency occurred at 0.75 g biosorbent weight at 80 mesh and 4 hours contact time with efficiency of 54.7%. The biosorption process indicates that the adsorption isotherm type obtained is Langmuir isotherms assumed that the layer formed is monolayer with R2 value of 0.8819. The SEM analysis results show the difference of the morphological shape on the sample surface before and after the biosorption proces
Perencanaan Sistem Plambing Air Bersih Gedung Rusunawa Mahasiswa Universitas Andalas
Get PDFDesign of water supply and fire protection system in a low income five storey apartment of Andalas University has been conducted based on Indonesian National Standard (SNI) regulation No.03-7065-2005, that the building which has more than 500 inhabitants or more than 1.500 visitors, should prepare plumbing system design. The University of Andalas Student Rental Building is a residential building of five floors. In this water supply plan the water source is supplied from the Unand’s water treatment plant. The water supply system uses a roof tank system with a combination of gravity flow and booster pump. The water supply tank consists of the bottom tank and the upper tank with capacities of 74 m3 dan 4,5 m3, respectively. The booster pump meets the critical pressure on the 3rd floor up to the 5th floor with 5,44 m head. Class II fire prevention systems use hydrant and sprinkler systems with automatic wet-type upright pipes. The distribution pipes use PVC pipes (1/2 - 1 1/4) inches, while the hydrants and sprinkler pipes use Black Steel (1-4) inch pipe