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<![CDATA[STUDI KELAYAKAN INSTALASI PENGOLAHAN LUMPUR TINJA KOTA SALATIGA ]]>
<![CDATA[Nasrullah Nasrullah]]>
<![CDATA[ Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007) ]]>
Publisher : <![CDATA[Universitas Diponegoro ]]>
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DOI: 10.14710/presipitasi.v3i2.16-24
<![CDATA[Salatiga’s Faecal Sludge Treatment Installation is used for the treatment of faecal sludge which is collected from the septic tank before it’s discarded to the environment. The purpose is to improve the municipal sanitation health condition. Based on the local health department of Salatiga in 2005, 79% Salatiga’s resident has using septic tank facilities. The Faecal Sludge Treatment was planned for the next 20 years with the capacity of 6 m3/day and supported by stabilization system basin. The feasibility study is conducted to determine weather the Faecal Sludge Treatment Installation is suitable or not. Some aspects such as financial, social, economics and technical aspect are important to be considered. The investment cost to establish this installation is IDR 722.207.600 (tax included). From the investment planning evaluation report, FSTI is not supported financially because the period payback had unreachable to the end of planning session, the internal rate of return hadn’t achieved to the lowest rate of interest and the benefit cost ratio is lower than 1 which is 0,98. However the FSTI still can be operated because the other aspects are still support the FSTI construction plan, which is technical, social, economic and regulation aspects.]]>
<![CDATA[POLA PERSEBARAN NITRAT DAN PHOSPHAT DENGAN MODEL AQUATOX2.2 SERTA HUBUNGAN TERHADAP TANAMAN ENCENG GONDOK PADA PERMUKAAN DANAU (STUDI KASUS DANAU RAWA PENING KABUPATEN SEMARANG) ]]>
<![CDATA[Budihardjo, Mochamad Arief]]>;
<![CDATA[Huboyo, Haryono Setiyo]]>
<![CDATA[ Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007) ]]>
Publisher : <![CDATA[Universitas Diponegoro ]]>
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DOI: 10.14710/presipitasi.v3i2.58-66
<![CDATA[Rawa Pening meets with environment degradation like other lakes in Indonesia which is caused by pollutant from the outside especially nitrate and phosphate. Degradation that is happened in this  time is  water  hyacinth  blooms  (enceng  gondok)  on  the  surface  of  the  lake.  This  makes Rawa Pening’s function become annoyed such as  PLTA, tourism, fishery, and irrigation. This degradation keeps  going  and  tends  to  increase  so  that  it  is  necessary  to  do  nitrate  and phosphate monitoring for next time. The taking of sample has done at three points: upstream (S1),  middle (S2), and  downstream  (S3)  which  are  used  as  an  observed  data.  Method  used  research is predicting nitrate and phosphate concentration for ten years later by Aquatox 2.2. Model  validation  done  with compare  observed  result  and  model  result.  Mean  error  from  this validation  less  than  5%  so that  the  model  supposed  describe  the  field  conditions.  Simulation model  result  that  obtained for  ten  years  later  are  nitrate  0,037  mg/L  (S1);  0,035  mg/L  (S2); 0,032 mg/L (S3) and phosphate 0,296 mg/L (S1); 0,274 mg/L (S2); 0,262 mg/L (S3). Dispersion pattern of simulation model result made by dividing lake into three segment, then search current velocity  to  get  dispersion distance.  This  pattern  showed  that  nitrate  and  phosphate concentration progressively decline from S1 to S3. Based on this pattern is knowable enceng gondok  amount  estimation  also  progressively decline  from  S1  to  S3.  The  calculation  sum  of enceng gondok estimation in upstream is about 66 plants and in downstream is about 43 plants. The width of enceng gondok progressively decline according to the amount of enceng gondok in every contour. But the density of enceng gondok not decline because the differences of every contour  area.  Support  energy  of  Rawa  Pening  surface area  to  enceng  gondok  is  about 180.594,59 m² and support energy of the  enceng gondok’s total is about 14.054 plants. Wet longitudinal section daily loads of Rawa Pening is about 6.319.405,41 m².]]>
<![CDATA[IDENTIFIKASI DAYA TAMPUNG BEBAN CEMARAN BOD SUNGAI DENGAN MODEL QUAL2E (STUDI KASUS SUNGAI GUNG, TEGAL – JAWA TENGAH) ]]>
<![CDATA[Nugraha, Winardi Dwi]]>;
<![CDATA[Cahyorini, Lintang]]>
<![CDATA[ Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007) ]]>
Publisher : <![CDATA[Universitas Diponegoro ]]>
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DOI: 10.14710/presipitasi.v3i2.93-101
<![CDATA[Gung  River  is  a  one  of  the  river  in  Central  Java  which  pass  trough  Tegal  Region  with total length about 48 km. The important thing in environmental problems that faced by Gung River such as increasing the load of water pollution.  BOD is one of the water pollution indicator in the streams. To make easier in knowing the the amount of Total Maximum Dailly Load (TMDL)in Gung River , it  is identified TMDL  of BOD uses modeling principal with Qual2E Modelling. And than  it  is  compared  with   the standar  streams  due  to  PP  No.  82/2001  about  Water  Quality Management and  Water Pollution Control. The result of simulation due to TMDL uses minimum flow rate is compared with standard stream ini PP 82 / 2001. It indicate that the quality could not meet with the standard stream related with the class 1 and class 2. In Reach 1 ( km 1 – 3  ) could meet with standar stream of class 3 with TMDL 1,43 – 9,98 kg/day. All the stream along the river could meet with standar stream ini class 4 with TMDL of BOD is 7,13 – 865,34 kg / day. The  result  of  simulation  due  to  TMDL  uses  maximum   flow  rate  is compared  with  standard stream  ini  PP  82  /  2001.  It  indicate  that  the  quality  could  not  meet with the  standard  stream related with the  class 1 and class 2. In Reach 1 ( km 1 – 3  ) could meet with standar stream of class  3  with  TMDL  72.06  –  3134,51  kg/day.  All  the  stream  along  the  river could  meet  with standar stream ini class 4 with TMDL of BOD is 7277,82 – 10.340,27 kg / day.]]>
<![CDATA[EVALUATION ON COMMUNITY BASED FOREST MANAGEMENT IMPLEMENTATION IN RANDUBLATUNG, BLORA ]]>
<![CDATA[Susilowati, Indah]]>;
<![CDATA[Esariti, Landung]]>
<![CDATA[ Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007) ]]>
Publisher : <![CDATA[Universitas Diponegoro ]]>
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DOI: 10.14710/presipitasi.v3i2.25-32
<![CDATA[Community Based Forest Management (CBFM) program is implemented so that forest resource benefit and management can be functioned according to optimal and proportional contribution. Randublatung  forest  in Blora  Regency  represents  forest  area  region  applying  the  CBFM program. Due to constraints in CBFM implementation and policy in Randublatung, an evaluation study is conducted, and Jegong village is chosen as a sample area. The mix approach using less quantitative more qualitative method  is depicted to describe the phenomenon and justify the reasons behind the situation. Evaluation is conducted using four important aspects namely CBFM management, sharing procedure, implementation stages and institutional system. Result shows  that  CBFM  implementation  in  Jegong  village  is  suitable,  although  it  is  found some constraint in the implementation process. To conclude, four strategies are created to respond for better application of CBFM Randublatung. There are developing the implementation stages in  CBFM, institutional  development  strategy,  multistakeholders  collaboration  strategy  and sharing contribution strategy.]]>
<![CDATA[PENGARUH WAKTU REAKSI DAN WAKTU TINGGAL STABILISASI PADA SEQUENCING BATCH REACTOR AEROB DENGAN PENAMBAHAN KARBON AKTIF TERHADAP PENURUNAN CHEMICAL OXYGEN DEMAND ]]>
<![CDATA[Hadiwododo, Mochtar]]>;
<![CDATA[Junaidi, Junaidi]]>
<![CDATA[ Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007) ]]>
Publisher : <![CDATA[Universitas Diponegoro ]]>
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DOI: 10.14710/presipitasi.v3i2.67-72
<![CDATA[Sequencing  Batch  Reactor  (SBR)  process  represent  biological  wastewater  treatment  with aerobic process  used  occasionally  to  eliminate  dissolve  organic  materials  constructively microorganism especially  bacterium  in  course  of  organic  degradation.  Sequencing  Batch Reactor(SBR )has five phase in its cycle, namely fill, react, setlle, draw and iddle phase. In this study iddle phase was changed into stabilization phased where microorganism oxydize organic matter  as  stored  materials  in  cell  under certain  aeration  period  of  time.The  objectives  of  this research are to know influence of time react and time stabilisation with added of Granular Active Carbon  (GAC)   to  COD  removal.  In  research  was used  reactor  from  plastic  material  with diameter  25  cm  and  high  is  25  cm,  volume  of wastewater  in  reactor  is  5  liter  and  volume  of sludge is 35% from volume of wastewater that 1,75 liter. Waste that used was artificial waste glucose soluble with 1032.5 mg/l concentration of COD. As independent variable are react time: (0,5 ; 1; 1,5 ; 2 hours) and stabilitation time (3; 4; 5; 6 hours), if dependent  variable are removal of  carbon.  Application  of  Granular  Active  Carbon  (GAC)  as absorbent,  combined  with suspended  system  of  SBR,  is  expected  to  be  able  to  remove  COD better.  As  the  result  this research  shows  that the finest of  carbon removal  is occurred  in time react 1  hours, andtime stabilitation 6 hours  is 97.23%. COD removal with GAC better than that without GAC.]]>
<![CDATA[RENCANA PENGEMBANGAN TEKNIK OPERASIONAL SISTEM PENGELOLAAN SAMPAH KOTA JUWANA ]]>
<![CDATA[Wardhana, Irawan Wisnu]]>
<![CDATA[ Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007) ]]>
Publisher : <![CDATA[Universitas Diponegoro ]]>
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DOI: 10.14710/presipitasi.v3i2.102-110
<![CDATA[Juwana city is one of a developed potential region that include in a WANARAKUTI (Juwana-Jepara-Kudus Pati) economic unity region. It has 43,282 populations in 2005 with the growth rate  of  populations  was about  1.308%  per  year. The  developing  of  populations  was  followed with the increasing of consumption quantities and other activities which increased production of solid wastes. In 2005, the amount of solid wastes was 133.896 m3/day and the development of bulk sizes of these wastes was 0.4% per year. Ranking of waste management service was 39% and service distribution was 50,47%. One of important aspects that caused low quality of waste management  services  was  the  aspects  operational technology  usage.  It  included  of  waste handling, storage, collection, transfer and transport. The evaluation and development program of waste operational technology was to increase the distribution area and service management of solid wastes up to 90%.]]>
<![CDATA[KAJIAN ALTERNATIF PENANGGULANGAN BANJIR (STUDI KASUS SUNGAI LADAPA DI KABUPATEN GORONTALO) ]]>
<![CDATA[Sarminingsih, Anik]]>
<![CDATA[ Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007) ]]>
Publisher : <![CDATA[Universitas Diponegoro ]]>
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DOI: 10.14710/presipitasi.v3i2.33-39
<![CDATA[Flood  mitigation  is  a  part  of  water  resources  management  widely  with  scope  are  consist of conservation, controlled and water used. The concept of water controlled is called Flood Control or Flood Mitigation/Flood Damage Mitigation. There are two kinds of flood control, structural and non structural effort. Structural effort is an effort which tends to engineering technique which is aimed to modification the flood discharge and the stage of flood damage. Flood discharge (Q, m3/sec) is the function of velocity (V, m/sec) and cross section area of the river/channel (A, m2). Efforts  of  flood  control  can be  carried  out by  justified  of  the  third  components.  Non-structural  effort  is  aimed  to  avoid  and  press  the problem  that  caused by  flood  with  some  activities  like arrangement  of  flood  plain  and  watershed development.   Non-structural   effort  usually  is conducted  for  long  period  goal.  Therefore  carrying this  effort  need  consistency  all  of stakeholder.  Participatory  approach  from  stakeholder  is  the  key of  success  of  non  structural effort.]]>
<![CDATA[UJI PEMBUATAN BIOGAS DARI KOTORAN GAJAH DENGAN VARIASI PENAMBAHAN URINE GAJAH DAN AIR ]]>
<![CDATA[Hardyanti, Nurandani]]>;
<![CDATA[Sutrisno, Endro]]>
<![CDATA[ Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007) ]]>
Publisher : <![CDATA[Universitas Diponegoro ]]>
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DOI: 10.14710/presipitasi.v3i2.73-77
<![CDATA[Biogas was a gas produced from biological activities in anaerobic fermentation processes and as  a renewable  energy.  This  research  was  to  find  out  the  effect  between  elephant  manure, elephant urine, water and starter to reduce biogas production and calorie value. This research is divided  into  three groups  based  on  the  raw  material,  i.e.,  elephant  manure,  elephant  urine, water  and  starter  as independent  variabels.  Observation  is  consisted  of  biogas  production volume and calorie value. This result showed that in 21 days, elephant manure mixtured with elephant urine with ratios of 1:2  was the best material to produce biogas, that was 60,800 ml of biogas and 5345.39 cal/liters of calorie value.]]>
<![CDATA[MODEL NUMERIK 2-D (LATERAL & LONGITUDINAL) SEBARAN POLUTAN CADMIUM(Cd) DI MUARA SUNGAI (STUDI KASUS: MUARA SUNGAI BABON, SEMARANG) ]]>
<![CDATA[Badrus Zaman]]>;
<![CDATA[Syafrudin Syafrudin]]>
<![CDATA[ Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007) ]]>
Publisher : <![CDATA[Universitas Diponegoro ]]>
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DOI: 10.14710/presipitasi.v3i2.1-8
<![CDATA[Estuary of River Babon very influenced by condition around its drainage basin. estuary of River Babon also have function as a channel of waste disposal from Terboyo Industrial Park, Semarang ( KITS). Cadmium ( Cd) as one of heavy metal pollutant and conservative element will certainly spread at estuarine. Based on research at the time of measurement, known that by the content of Cd at estuary of river Babon equal to ( 0,009 - 0,017) mg / l, where the concentration have exceeded the Quality of Water Go out to sea for the Biota of Go out to sea that is equal to 0.001 mg / l (Kep Men LH No. 51 tahun 2004). Study about disseminating polutan at estuarine can be conducted by using model because by using model can be knowable how disseminating polutan accurately, quickly and cheap so that picture from the model can be made basis for furthermore management. Model developed with numerical 2-D model ( lateral & longitude). Model developed by using equation on the basis of hydrodynamics process and conservative transpor polutan. The equation finished by numerik by using differential method ( finite difference). The result from developed model for the time of t = 1 hour obtained value with 3.028% mistake from field data.]]>
<![CDATA[ANALISIS SEBARAN TEMPERATUR DAN SALINITAS AIR LIMBAH PLTU-PLTGU BERDASARKAN SISTEM PEMETAAAN SPASIAL (STUDI KASUS : PLTU-PLTGU TAMBAK LOROK SEMARANG) ]]>
<![CDATA[Haryono Setiyo Huboyo]]>;
<![CDATA[Badrus Zaman]]>
<![CDATA[ Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 3, No 2 (2007): Vol 3, No 2 (2007) ]]>
Publisher : <![CDATA[Universitas Diponegoro ]]>
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DOI: 10.14710/presipitasi.v3i2.40-45
<![CDATA[Heat wastewater emitted by power plant near seashore will be dispersed to bulk seawater by stream. The main effects generated by this elevated streams is deteriorating of benthic and aquatic life productivity. Further impact is subjected to depleting dissolved oxygen and seawater salinity content. By means of spatial mapping, the pattern of temperature distribution would be revealed and its impact could be predicted by then. Measurements of 14 purposive sampling spots were conducted in the early morning, noon and afternoon within Tambak Lorok Port pond. Control measurements also were taken in the East side and West side of the pond. Temperature distribution observed from the early morning through the afternoon exhibited the same pattern with dissolved oxygen distribution as well as stream pattern. Turbidity distribution accumulated in the East side, mixed with domestic waste stream carrying large amount suspended solids. Salinity distribution showed a little bit different pattern with temperature distribution considering that salinity pattern was affected by incoming streams from bulk seawater in the Northwest and Northeast of the pond.]]>
