ASEAN Journal of Systems Engineering最新文献

{"title":"PENGARUH JENIS ARANG AKTIF AMPAS TEBU, TATAL KAYU DAN TEMPURUNG KELAPA TERHADAP KEMAMPUAN PENJERAPAN WARNA AIR SUNGAI SAMBAS","authors":"Winda Apriani, Indra Perdana, Sri Puji Saraswati","doi":"10.22146/ajse.v2i2.5789","DOIUrl":"https://doi.org/10.22146/ajse.v2i2.5789","url":null,"abstract":"The availability of clean water still poses problems in Indonesia. The need of clean water for Sambas City people still depends on river water. This river water comes from Sambas River which has bright yellow color (73.6 TCU), exceeding the allowed maximum level for clean water in accordance with the Regulation of Health Affairs No.416/MEN.KES/PER/IX/1990, which is 50 TCU, with low turbidity (23.3 TCU) and low pH (4.34). The characteristics of this river water indicate that the water color of Sambas River is true color. Level of this type of water color can be degraded by adsorption process using activated charcoal. It is easy to find raw materials of activated charcoal from waste sources containing carbon in Indonesia, especially West Kalimantan, such as bagasse, wood chips and coconut shell. Therefore, this research was conducted to identify the influence of activated charcoal types of bagasse, wood chips and coconut shell which are used as adsorbent to adsorp the color of Sambas river water and to identify the optimum dosage and duration of the process. Activated charcoal was made of bagasse, wood chip and coconut shell through pyrolysis process at a temperature of 500 0 C for 3.5 hours followed by chemical activation process using H 3 PO 4 5% for 24 hours. The water was from Sambas river, Tanjung Mekar Village, Sambas, West Kalimantan. The adsorption process employed various types of activated charcoal (bagasse, wood chips and coconut shell); dosage (1, 2, 3, 4 and 5%b/v); and contact time (10, 15, 30, 60, 90, 120 and 180 minutes). The results indicated that different types of activated charcoal material in the adsorption process give different color level. The best treatment of batch process with 500 ml of Sambas river water was from the adsorption using activated charcoal of bagasse with an optimum dosage of 2% b/v and optimum contact duration of 90 minutes. It produced water color level between 50.00-52.00 TCU (meeting the standard of the Regulation of Health Affairs No.416/MEN.KES/PER/IX/1990).","PeriodicalId":280593,"journal":{"name":"ASEAN Journal of Systems Engineering","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133700918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ENERGY MODELLING AND FORECASTING OF DAERAH ISTIMEWA YOGYAKARTA 2025","authors":"E. Haryono, Deendarlianto, B. M. Sopha","doi":"10.22146/ajse.v2i2.5794","DOIUrl":"https://doi.org/10.22146/ajse.v2i2.5794","url":null,"abstract":"Daerah Istimewa Yogyakarta (DIY) is one of the provinces in Indonesia which does not have a backup or potential sources of non-renewable primary energy. The non-renewable energy demand until this time, such as oil,coal and gas is supplied from the outside. DIY is in Java Madura Bali (JAMALI) interconnerction system and has not had a large-scale power systems. While DIY has renewable energy sources such as hydro, solar, wind, wave and biomass energy. These renewable energy sources are alternative energy that have not been optimally used. The lack of reserve energy resources that resulting dependence of energy supply from other areas should receive special attention from DIY government. To meet energy demand, the energy resources development is required. Due to the energy resources development requires a long time and high cost, it is necessary to be supported by good planning in energy policy.The purpose of this study is to determine the balance of energy demand and supply of  DIY until 2025. Furthermore, the purpose of this study is to find out a mix number of renewable energy. The Indonesian government has launched a vision of 25/25 which expection in 2025, the mix number of renewable energy will be 25%.The results of this study indicate that in 2025, the Transportion Sector is the largest energy user sector in DIY at 52.37%, followed by Household Sector (32.70%), Commercial Sector (8.26%), Other Sector (4.64%), and Industrial Sector (2.04%). The high level of energy consumption in the Transportation Sector is caused by the increasing number of vehicles especially motorcycles and passenger cars considering DIY is a student and tourism city. In term of the type of energy used, in 2025, the gasoline is the greatest type of energy demand (41.8%), followed by LPG (23.97%), electricity (18.14%) and diesel oil (11, 74%). This indicates that the fuel oil is still the main energy source for the DIY community activities. When viewed from supply side, most of the energy needs in DIY are supplied from outside. If the development of enewable energy targets DIY reached, the renewable energy mix is obtained by 0.53 %.","PeriodicalId":280593,"journal":{"name":"ASEAN Journal of Systems Engineering","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122793438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PEMANFAATAN LIMBAH TULANG-TULANG IKAN MENJADI PELET PAKAN IKAN UNTUK MENCIPTAKAN KAWASAN ZERO WASTE DI PANTAI BARU PANDANSIMO KABUPATEN BANTUL","authors":"Rizki Fitriyani, Arif Kusumawanto, Ria Miliati","doi":"10.22146/ajse.v2i2.5792","DOIUrl":"https://doi.org/10.22146/ajse.v2i2.5792","url":null,"abstract":"Pantai Baru Pandansimo is one of the attraction that is currently being developed Bantul district, located in Dusun Ngentak, Poncosari, Srandakan. Besides, we can enjoyed the beach, also served a variety of seafood from dozens of culinary stands, and there is also a Fish Auction Place (TPI). The existence of dozens of culinary stands, TPI and increasing tourists will cause the issue of waste cause the accumulation of organic waste such as leftovers in culinary stands plus there is no waste management system, the waste usually just discarded, dumped and left to rot that would cause smell and would disturb of tourist. This study aimed at finding out the extent positive impact of the utilization waste leftovers from stands culinary toward Pantai Baru Pandansimo to create zero waste region so as to reduce the quantity of waste into process fish feed. Then, to find out variation of formulation fish feed that good nutritional value so that can supply nutritional requirements of fish by Pearson Square method at various combinations of fish bone meal, shrimp waste meal, and rice bran. Chemical testing by proximate analysis and physical testing on the fifth variation to finding out variations of pellets which compatible with SNI feed the fish. So, pellets from waste can be beneficial to the surrounding community. The results of the study showed that utilizing waste leftovers from stands culinary in area Pantai Baru Pandansimo into fish is able to reduce the weight of organic waste by 2-3 quintals/month so the weight of waste from stands culinary can be reduced by 39%. Based on chemical test and physical test it was found that the optimal at the pellet P4 with a protein content of 34.34% and fat by 5.74% and P5 with a protein content 34.78% and fat by 5.14%. That results have appropriate of quality requirements for SNI-01-4087-2006 catfish, SNI-01-7242-2006 tilapia and SNI 7473:2009 carp. Waste management will provide improvements in environmental hygiene in the area Pantai Baru Pandansimo by 55% and improve waste management services by 65%. Sewage treatment will provide a positive benefit as much as 80% reduce the accumulation of waste and as much as 20% to educate people about the benefits of waste management.","PeriodicalId":280593,"journal":{"name":"ASEAN Journal of Systems Engineering","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122420214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DESAIN SISTEM INSTRUMENTASI PROSES DISTILASI FRAKSINASI BATCH BERBASIS KENDALI SUHU","authors":"M. Arman, Agus Prasetya, Sihana","doi":"10.22146/ajse.v2i2.5793","DOIUrl":"https://doi.org/10.22146/ajse.v2i2.5793","url":null,"abstract":"Distillation column is a column that is widely used in both large industry and small and medium industries. Use of distalasi column on small and medium industries such as the distillation of essential oils. In the subsequent use of the distillation column used for purification or further process to obtain a higher quality product in the form of multstage distillation. In the process of multistages distillation,  temperature is an important component in the process, because of that controls the temperature has an important role. Temperature controllers available today are manual, which causes frequent inaccuracy of the distillation process, resulting in low product quality. Therefore automatic temperature control is required. In this thesis, instrumentation system of fractionation distillation process based of temperature control are designed. The design process notice the six important  point temperature in the distillation process, using a thermocouple as a temperature sensor, and LM35 as the cold junction temperature,  the 6218 USB as Data Acquisition Board, and the software LABVIEW 2010. The instrumentation system programming, displays the temperature from time to time at intervals of one second, the temperature statistics (min, max and average) as well as measurement results table. The program also features a choice (shaped slider) to  set the temperature for a flexible batch process. The response characteristics of the instrumentation system is less than one second, both in displaying measured data, response indicator, display graphs, and data tables. The instrumentation system is also designed to regulate the flow rate of the cooling water and container replacement indicator for each product distillation.","PeriodicalId":280593,"journal":{"name":"ASEAN Journal of Systems Engineering","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124556247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALYSIS OF PHOSPHATE IN LIQUID WASTE HOSPITAL","authors":"E. Nurhayati, M. Hidayat, S. Saraswati","doi":"10.22146/ajse.v2i2.3782","DOIUrl":"https://doi.org/10.22146/ajse.v2i2.3782","url":null,"abstract":"Liquid waste generated by various activities in the hospital environment has the potential to pollute the environment if the parameters contained in it exceeds the specified quality standards. Parameters that most often exceeded the quality standard is phosphate (PO43-). Phosphate which exceeds the limit of 2 mg/L may affect the balance of aquatic ecosystems. One way to lower phosphate levels is using the coagulation flocculation process. This study aims to uncover the root cause of high levels of phosphate and recommendations for decline it and propose to install coagulation flocculation units.Research methodology starts from search and identification of phosphate levels of various source of phosphate in the hospital environment, from sump pit Dapur (Kitchen), sump pit Poli (Polyclinic), sump pit Lucas, sump pit Biara (Monastery), sump pit Genset and sump pit Carolus. Then doing the jar test in coagulation flocculation process using coagulant that is alum and lime with rapid stirring for 60 seconds and slow stirring for 15 minutes. Jar test was used to determine the optimal dose of coagulant for alum dose range between 50-150 (mg/L) and lime between 75-125 (mg/L). Coagulation flocculation units will be built on the largest phosphate producer with sampling as much as 6 times to determine the fluctuations of phosphate. Lab test of phosphate levels were performed using the spectrophotometric of SnCl2 method.The study data include phosphate levels from source of phosphate and phosphate fluctuations in the greatest source. Based on the results the largest source from pond Elisabeth. Jar test process is done by sampling as much as a liter of waste water taken from pond Elisabeth with total discharge of 26,640 L/day. Showed that the initial Phosphate of maximum from 7,1 mg/L decreased to 1,73 mg/L (75,63%) if given the alum dose of 50 mg/L and lime 125 mg/L which generates as much as 7,049 kg of sludge per day. Phosphate of average from 4,58 mg/L decreased to 0,73 mg/L (84,06%) with alum as much as 50 mg/L and lime as much as 75 mg/L which produces sludge as much as 5,378 kg/day. Phosphate of minimum from 2,23 mg/L decreased to 0,14 mg/L (93,72%) if given the alum dose of 50 mg/L and lime 75 mg/L with sludge as much as 4,931 kg/day.","PeriodicalId":280593,"journal":{"name":"ASEAN Journal of Systems Engineering","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127333305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PREDICTION OF WELL BEHAVIOR USING WELL DELIVERABILITY ANALYSIS","authors":"D. Asmorowati, M. Wildan, Khasani","doi":"10.22146/ajse.v2i1.4965","DOIUrl":"https://doi.org/10.22146/ajse.v2i1.4965","url":null,"abstract":"In operating geothermal field, the thing to note is the sustainable production as well as problems that affect it. The problem that often occurs in the geothermal field is scale, corrosion and mechanical problems. One technique that can be used to predict the problems that occur around the bottom hole to the surface is using the well deliverability analysis method. Analysis is done by data and curve interpretation of deliverability curve based on Grant experiment. This study take data from several wells in two Geothermal Field in Indonesia. From the analysis, well A, D and F show production decline The deliverability curve of well A shows the production decline for about 60 – 85%, it is caused by moving of the flashing point, it shows from the increasing of dryness value from 7-14% in 1997 become 13-15% in 2010. The deliverability curve of well D shows the production decline for about 50%, it is caused by declining of reservoir pressure that can be seen from the decreasing  of feed zone pressure in 1997 is 27 bar and in 2010 is 20 bar. The deliverability curve of well F shows the production decline for about 29%, it is caused by moving  of the flashing point.","PeriodicalId":280593,"journal":{"name":"ASEAN Journal of Systems Engineering","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123222968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STUDY KOMPARASI LOST FOAM DAN KONVENSIONAL CASTING PRODUK DISC BRAKE","authors":"Sumeru Yoso, Suyitno","doi":"10.22146/ajse.v2i1.4967","DOIUrl":"https://doi.org/10.22146/ajse.v2i1.4967","url":null,"abstract":"Disc brake component is a vital component with gray cast iron base material, it’s also fast lasting wearing part, so it has be replaced often. The disc brake replacement component in a local market is being supplied by the small scale local metal casting industries have the same quality as the genuine part. Disc brake making process is utilizing casting method inserting RCS core between drag and coup, than metal molten poured inside mold. The problem of this method is the product result often have gas defect because the gas that occur from the mold in casting process cannot be released perfectly, and then trapped in the metal molten caused by permeability or the gas flow in the green sand mold is not good enough. Ventilating disc brake making is not utilizing evaporative casting method or lost foam casting yet at the moment so it need to be research for the gains and the losses between the casting result using conventional method and lost foam casting method, considering that there’s no research for the disc brake component yet as far. This research will give many benefits to know that the thin Styrofoam pattern construction’s of the disc brake, with quit complicated ventilation would not be strong enough to sustain the dry sand mold on the pattern so it will be collapse earlier before the metal molten filled the cavity from the pattern, but it will make good result if it’s combined with the RCS core using. The time duration of the dry sand mold and the re-using will be faster than the conventional casting which using 2 underside mold or drag and upside mold or coup using the green sand.","PeriodicalId":280593,"journal":{"name":"ASEAN Journal of Systems Engineering","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121120250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENGARUH LEBAR SUDU TERHADAP KINERJA TURBIN VORTEKS","authors":"Yusuf Randabunga, Adhy Kurniawan, S. Darmo","doi":"10.22146/ajse.v2i1.4968","DOIUrl":"https://doi.org/10.22146/ajse.v2i1.4968","url":null,"abstract":"Vortex turbine is the one of turbines which meets those criteria. This turbine utilizes kinetic energy of vortex water and converts it into a shaft power. The objectives of this research were to obtain the torque that could be generated from the vortex  turbine by varying the width of turbine blades and to know  the output  power also the optimum efficiency obtained from this variation. This research was conducted by  using vortex pool in a laboratory scale with a diameter of 108 cm and 6 turbine blades on permanent rotation at 50 rpm, 60 rpm, and 70 rpm. Turbine blades were made from flat rectangular steel with a length of 40 cm sized 1/6, 2/6, 3/6, 4/6 and 5/6 times to radius of vortex pool. The results of the research showed the torque as 1.40 Nm at rotation is 50 rpm. The maximum power is obtained from blade with width of 3/6 times  radius of the pool, that is  8.60 Watts at head 0.362 m and discharge 11.83  l/s or  0.01183 m 3 /s at rotaion shaft is 70 rpm. This experiment also generated and turbine efficiency of 16.46% at rotation of shaft is 70 rpm.","PeriodicalId":280593,"journal":{"name":"ASEAN Journal of Systems Engineering","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132475354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENELITIAN EFISIENSI PUMP AS TURBINE (PAT) UNTUK MENDUKUNG PERENCANAAN DAN IMPLEMENTASI PLTMh DI KABUPATEN SUMBAWA","authors":"Alfi Rusdi, Agus Maryono, Suhanan","doi":"10.22146/ajse.v2i1.4964","DOIUrl":"https://doi.org/10.22146/ajse.v2i1.4964","url":null,"abstract":"The energy crisis will come soon, the consumption behavior and economic elevating will advance the energy depletion. The demand of power electrical around 4.000 – 5.000 MW per year will difficult to fix, if we just rely on fossil energy because of the increasing oil world price. The water energy is one of the renewable energy can be used as solution. Based on annual reporting of PT PLN (Persero) area NTB in 2012. Province of  NTB has hydropower potential 82,35 MW but until 2012 the ratio electrical is 50,95%. The building of PLTA need high cost, so PLTMh is considered to solve soon the village electrical demand. Dusun Kaduk in Kabupaten Sumbawa Province of NTB is one of the hilly and purilieus village area that has potential of coffee field, but doesn’t has electrical sources. Pump as Turbine (PaT) is designed to change generator. The advance of PaT are easy instalation and maintanance, mass production, avalaible spare part and low investation so can utilize the maximum water potential. The purpose of research to examine the suit PaT for local area, to analize capability the centrifugal water pump type semi-open impeller SU-50 be used as PaT and to get the characteristic of relation between water discharge to output power. The experimental method is used to examine the layout PaT directly and note the parameters used to analize of data. The result of the research show the the centrifugal water pump type semi-open impeller SU-50 used as PaT can produce 911,73 rpm, The maximum power 61,09 W at head 4 m and the highest efficiency 19,05 %. The modified impeller by using forward blade close impeller can increase 935 rpm, the maximum power 62,35 W at head 4 m and the highest efficiency 20,42 %. The highest spin 1194,83 rpm, the maximum power 85,80 W at head 4 m with efficiency until 34,79 % is got by using backward blade close impeller. Result of similarity analysis if discharge 85 l/s, head 21 m, diameter of pump 0,523 m and highest spin 1600,094 rpm can produce power 311,211 kW. Based the research  the PaT can be used as alternative of electrical power sources in village.","PeriodicalId":280593,"journal":{"name":"ASEAN Journal of Systems Engineering","volume":"266 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125812458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PEMANFAATAN LIMBAH CAIR INDUSTRI AREN DI DUKUH BENDO, DESA DALEMAN, KEC. TULUNG, KAB. KLATEN SEBAGAI PUPUK ORGANIK CAIR (POC) DENGAN METODE PENGOLAHAN AEROBIK","authors":"Jovita Irene Pongoh, Sarto, Muhammad Sulaiman","doi":"10.22146/ajse.v2i1.4970","DOIUrl":"https://doi.org/10.22146/ajse.v2i1.4970","url":null,"abstract":"These days, a lot of solid and liquid waste produced from aren powder indutry, and one of the area for this industry located in Bendo Subvillage, Klaten District, Central Java. The liquid waste is the unwanted product from of the aren powder during the screening and precipitation process.. The liquid waste produced by the industry at Dukuh Bendo is containing  high of BOD and COD and this is became an environmental disaster as most of the liquid waste did not through the waste treatment process, and sent directly to water stream so there is a need to overcome or minimize this whole problem, and the making of liquid organic fertilizer from the liquid waste of this industry is one of the solution. The usage of liquid organic fertilizer also can reduce the usage of chemical fertilizer and also can help repair the soil condition and minimize the environmental destruction caused by liquid waste from this industry.During the research, for the liquid waste treatment aerobic proces in the aeration pond is used with the addition of bacteria and varoius dilution composition; VAR1 the composition between liquid waste and water 50:50 with bacteria added, VAR2 the composition between liquid waste and water 80:20 with bacteria added, VAR3 the composition 100% liquid waste with bacteria added, VAR4 100% liquid waste with no bacteria added. From the laboratory test found that the liquid waste from aren industry contains 686 mg/l BOD and 5800 mg/l COD. The research was done in some stages; preliminary test to understand the characteristic of the liquid waste from aren powder industry, specially the BOD and COD levels,treatment in the aeration pond, and the result from the process ( liquid organic fertilizer) and it tested to cornstalk in this research and the height and the leaves growth are recordedThe result from aeration process with bacteria added are : the BOD with the efeective retention time for VAR2 is in day 4, with BOD level at 3.2 mg/l which is 98.8% reduced from the original level ( 686 mg/l). The COD with effective retention time for VAR2 is in day 4 with COD  level at 120 mg/l which is 96.98% reduced from the original level ( 5800 mg/l. The maximum nitrogen level is in day 5 at 0.07629%, phospor level at 0.0199% and potassium level at 0.0169%the positif growth of the cornstalk recorded during the period of the time showing that the nutrient absorbed properly.","PeriodicalId":280593,"journal":{"name":"ASEAN Journal of Systems Engineering","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134515966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}