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All Journal JURNAL AIR INDONESIA JURNAL TEKNOLOGI LINGKUNGAN Jurnal Rekayasa Lingkungan Jurnal Hidrosfir Indonesia
Petrus Nugro Rahardjo
Kelompok Teknologi Pengelolaan Air Bersih dan Limbah Cair
Agriculture, Biological Sciences & Forestry Environmental Science

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PERMASALAHAN TEKNIS INSTALASI PENGOLAHAN AIR LIMBAH PABRIK MINYAK KELAPA SAWIT Rahardjo, Petrus Nugro
Jurnal Air Indonesia Vol. 1 No. 1 (2005): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jai.v1i1.2290

Abstract

Crude palm oil produced in Indonesia has already been known as the second largest in Asia. Unfortunately tens of palm oil factories (CPOF) spread out in Indonesia have not good wastewater treatment plants (WWTP) yet. PT. Kertajaya, as an example, which is located in Regency Pandeglang, still has BOD contained in its final effluent of the wastewater treatment plant more than 200 ppm. In fact the capacity and capability of WWTP in PT. Kertajaya are much more than enough for only 288 m3 per day. Because of improper operation and maintenance of the WWTP, the technical problems are accumulated, such as, increasing the sediment, decreasing the retention time and channelling of the wastewater being treated. The following affect is the treatment process is not going well and the quality of effluent is getting worse. To solve the technical problems, it is very important to remove the sediment periodically and give aeration in the aerobic pond. A recommendation for the wastewater treatment system has been proposed. The system has eight processes including oil separation or first sedimentation, neutralization, equalization, anaerobic degradation, aerobic degradation,  final sedimentation and sludge drying. Katakunci : BOD, technical problem, wastewater, anaerobic. Aerobic process
TEKNOLOGI PENGELOLAAN LIMBAH CAIR YANG IDEAL UNTUK PABRIK KELAPA SAWIT Rahardjo, Petrus Nugro
Jurnal Air Indonesia Vol. 2 No. 1 (2006): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jai.v2i1.2291

Abstract

The number of crude palm oil factory (CPOF) in Indonesia has already increased rapidly in the last fifteen years. In the same period, expansion of the palm plantation has also been continuing and growing, but unfortunately the accelerated growth is not same as the development of the wastewater treatment technology and its proper applications. Many CPOF in Indonesia have not a good wastewater treatment plant (WWTP). In fact they cause terribly environmental problems, especially related to surface water pollution. BOD content in the effluent of most CPOF is between 35,000 to 46,000 ppm and in the effluent of their WWTP it is much more than 100 ppm. Therefore it needs to propose a treatment system which can guarantee to reduce all pollutants till a value matching with the environmental quality standard. Based on the research result assessed by BPPT, an ideal WWTP suitable for CPOF is promoted to be considered as one very good alternative which is better applied for all CPOF in Indonesia. The stages and processes are showed in the second  figure. Key words : Ideal treatment, CPOF wastewater
APLIKASI TEKNOLOGI PENGADAAN AIR BERSIH DI EMPAT DESA TERTINGGAL DI BENGKULU SELATAN Rahardjo, Petrus Nugro
Jurnal Air Indonesia Vol. 3 No. 1 (2007): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jai.v3i1.2319

Abstract

In County South Bengkulu there are 4 villages classified into poor villages. Those villages do not have some principal facilities yet, such as clean water supply system and electricity. To fulfill clean water need, the people use shallow groundwater which has very bad quality. The groundwater contains Fe (1.7 ppm) and Mn (0.7 ppm). The contents are much more than the standard quality allowed by WHO. The groundwater colour is also a little bit brown. To deal with those problems, BPPT (Agency for the Assessment and Application of Technology) has tried to apply a water treatment system which is supported by a solar cell system producing the electricity. The electric energy is used for pumping the groundwater. The water treatment has a mainly important process which is accommodated in a multy media filter. The media include coarse coral, find coral, sand silica, manganese zeolite and activated carbon. The media filter can reduce the contaminants (Fe & Mn) and remove the odour effectively. The complete water treatment system has been applied successfully in the 4 villages (one for each village).    Keywords : Clean Water Supply Technology.
EVALUASI TEKNOLOGI AIR MINUM ISI ULANG DI DKI JAKARTA Yudo, Satmoko; Rahardjo, Petrus Nugro
Jurnal Air Indonesia Vol. 1 No. 3 (2005): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jai.v1i3.2353

Abstract

 Nowadays raw water resources for drinking water are less and less available, especially in Jakarta. For example, the condition of most rivers in Jakarta is extremely polluted by wastewaters, such as domestic and industrial wastewater. Some of industrial wastewater straightly discharged into the rivers are classified as  toxic and hazardous wastewater.  Therefore all rivers in Jakarta are not feasible to be used as the raw water for clean water treatment processes. Even ground water is not already safe to be used as the raw water for drinking water, because it has commonly been contaminated by seepage of septic tanks and polluted surface waters. Because of that, many people living in Jakarta tried to find other alternatives. Commercially sold mineral water is one good option for supplying drinking water need, but the prices are relatively expensive for most of people.There were more than 1,000 refill drinking water depots growing in the last ten years. They are one of the best answers to many people, but the quality of drinking water is still debatable. In other word, there is not a standard regulation for the water treatment processes, so the depots cannot guarantee that the produced water already fulfill the quality standard of drinking water. In order to give a good service for community living in Jakarta, it is very important to evaluate all aspects of technology, management and services.  Keywords : Refill drinking water technology, water treatment processes.
MASALAH PEMENUHAN KEBUTUHAN AIR BERSIH TIGA DESA DI KABUPATEN ENDE Rahardjo, Petrus Nugro
Jurnal Air Indonesia Vol. 4 No. 1 (2008): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jai.v4i1.2365

Abstract

Clean water supply is still a very difficult problem for small villages, especially in County Ende, NTT. Three villages, ie Detukeli, Ndetundora I and Ndetundora II, are the examples. The real problem is the settlement living in the area which do not have enough potential of water resources.There are some potential surface water resources, but they are located more than 3 km from the village settlement. One of the potential rivers is so separated by a big hill, that the people have to walk for a long distance to reach the clean water resource. To solve the problem, it is very important to develop a transmition piping, including the distribution net and a hidram water pumping system. To construct a complete water supply system needs a lot of investation. For only Village Detukeli as an example, it needs approximately almost 2 thousand million rupiahs.  Kata Kunci : Clean water supply, limited potential of water resources
7 PENYEBAB BANJIR DI WILAYAH PERKOTAAN YANG PADAT PENDUDUKNYA Rahardjo, Petrus Nugro
Jurnal Air Indonesia Vol. 7 No. 2 (2014): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jai.v7i2.2421

Abstract

In Indonesia during the rainy season floods often occur in urban areas, especially in a very densely populated areas. Central or local government has always suffered huge losses due to widespread flooding and paralyze all activities of the city. So many environmental issues that can cause flooding and the problem has become very complex. By doing assessment study deeply it can be seen that there are 7 (seven) causes flooding, namely: there is not environmentally sustainable development; The lack of a clean lifestyle in the general public; The lack of planning and maintenance of good drainage; The lack of consistency from the authorities in Spatial Planning and Regional; The absence of good conservation programs in balancing environmental of water; Iand subsidence; and very high rainfall intensity. Therefore it is necessary for serious efforts to address the flooding problem through: The consistency in environmentally sustainable development; Clean lifestyle in the community; The application of the concept " Water front City "; The application of the concept " One River One Management "; Making Infiltration; Prevention of Land Subsidence by Groundwater Injection manner; and Improved coordination of all stakeholders. Keywords: Causes flooding, options in handling flood problem.
KAJIAN ASPEK KEBIJAKAN DAN REGULASI DALAM MASALAH PENGELOLAAN LIMBAH CAIR INDUSTRI RUMAH TANGGA Rahardjo, Petrus Nugro
Jurnal Air Indonesia Vol. 4 No. 2 (2008): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jai.v4i2.2424

Abstract

Water pollution because of the domestic wastewater produced by the local community and their home industries in a big city, such as Jakarta, has already been inviting many environmental problems since the last ten years. Based on the research done by Directorat General Cipta Karya, Public Works Department RI, domestic wastewater in Jakarta delivers 75% of all pollutants in surface water pollution. Therefore many things should be done to solve those water pollution problems. A lot of environmentally related rules have established in Indonesia, but they are not able to be optimally implemented because of some weaknesses of the environmental rule contents. One of the solving options is to create a perfect regulation system for wastewater management. The laws for home industry wastewater management, especially in big cities, have to be perfectly completed, mainly in the field of standard, operation and procedure, the wastewater quality standard, the adequate and qualified technology, the landscape and building planning and the institutional coordination. If the all environmental regulations are well synchronized, the law enforcement will be simply implemented. By applying them consistently, the water pollution control will be handled well. Keywrods : Environmental Regulation, Home Industry Waste Water, Institutional Coordination  
IDENTIFIKASI MASALAH APLIKASI TEKNOLOGI PENGOLAHAN AIR PAYAU DENGAN SISTEM RO DI KABUPATEN REMBANG DAN CARA MENGATASINYA Rahardjo, Petrus Nugro
Jurnal Air Indonesia Vol. 6 No. 1 (2010): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jai.v6i1.2458

Abstract

A brackish water treatment process technology based on reverse osmosis principle has been applied in an Islamic school community “Raudlatuttalibin”, Rembang, since July 2008. Production capacity of the water treatment plant was designed 10M3 of drinking water per day. After running the system for one and a half years, a lot of problems were consecutively appearing untill the end of March 2010. This identification activity clarified all problems in detail and explained how to solve them. They are not only technical problems, but also social and cultural problems of the community. To solve them it must be started from increasing the capability of operators and applying the clean production concept. Finally by changing all the technically broken spareparts and running the RO unit system properly, they will be guaranteed to be able to produce good quality of drinking water.  Keywords : water treatment plant, reverse osmosis, technical & social problems.
UJI COBA PROSES KOAGULASI-FLOKULASI AIR BAKU UNTUK PDAM DANAU TELOKO DAN TELUK GELAM DI KAYU AGUNG KABUPATEN OKI PROPINSI SUMATERA SELATAN Rahardjo, Petrus Nugro
Jurnal Air Indonesia Vol. 6 No. 2 (2010): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jai.v6i2.2461

Abstract

Regional Drinking Water Company (PDAM) of County Ogan Komering Ilir has two problematic water treatment units. The first is located in Danau Teloko and the other is in the Teluk Gelam. The main problem is that many organic pollutants (namely peat water) contained in raw water. Therefore, PDAM can not be optimal to supply all the needs of drinking water for the community. PDAM have tried to treat the raw water of peat with the process of flocculation and coagulation, but the results did not meet quality standards as drinking water. This research is a trial test to obtain the optimum condition for flocculation and coagulation processes in water treatment. The results were very succesful and get the optimum pH is about 7.5 and a chemical dose of 80 ppm Aluminum Sulphate as the coagulant. Turbidity of water produced is 4 NTU and visually looks very clean. Better to add a synthetic polymer (PAC) as an additive to the process of flocculation and coagulation. Based on calculations, PDAM Danau Teloko will require the amount of coagulant (Aluminum Sulphate) 138.24 kg per day to produce 40 liters of drinking water per second. Keywords : Raw Water, Flocculation, Coagulation,  Water Treatment Plant
REDISAIN INSTALASI PENGOLAHAN AIR LIMBAH (IPAL) RUMAH SAKIT UMUM DAERAH (RSUD) TIMIKA, PAPUA Setiyono, Setiyono; Rahardjo, Petrus Nugro
Jurnal Air Indonesia Vol. 6 No. 2 (2010): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jai.v6i2.2463

Abstract

Hospital is playing an important role in serving people who need to get health. On the other hand its occurrence causes some problems as well. One of them is the infectious wastewaters which are potential to cause a dangerous effect for human life. A lot of hospitals in Indonesia do not have the proper wastewater treatment plant yet. The local hospital of County Timika has already had a wastewater treatment plant (WWTP), but until now the capacity of the unit can not fulfil the required level of environmental standard yet. One of the problems is the technically improper treatment processes. To solve the problems, the WWTP must be redesigned and modifief by using a combination technique of anaerobik and aerobic biofilter treatment processes.The newly proposed design process of WWTP for the local hospital in TImika has already prepared to be applied. Keywords : Medical Wastewater Treatment Process, anerobic/aerobic biofilter 
Co-Authors Satmoko Yudo Setiyono Setiyono wahyu widayat