%O LAPORAN PENELITIAN KERJASAMA INTERNASIONAL
TAHUN ANGGARAN 2012
%K anaerobic treatment, biogas, septic tank sludge, resources recovery, sustainable sanitation
%A Purwantoro Didik
%A E. Nayono, Dr., M.Eng., M.Sc. Ing. Satoto
%A Hidayah, S.T., M.T., Ph.D. Retna
%X Gunung Kidul district in Yogyakarta Special Province, Indonesia undergoes an acute water shortage despite receiving high amounts of precipitation during the rainy season. Since this area is a karst region, water normally infiltrates into the ground, flows through the underground caves and finally ends up in the Indian Ocean. In general, sanitation systems in Gunung Kidul consist of either pit latrines or pour-flush toilets (latrines). Pit latrines are commonly found in rural areas while in urban areas, pour flush latrines take the lead. As a case for this study is Wonosari hospital (RSUD Wonosari. This hospital is largest public hospital found in Wonosari, Gunung Kudul region. With a capacity of about 115 beds, the hospital has about 351 staff, of which 160 are non-medic and 191 are medic staff. In regard to sanitation, the hospital currently has a kind of central wastewater disposal system with a subsequent biological treatment plant. This wastewater treatment plant is however not in the good condition and operation. Most of the wastewater resulted from hospital’s activities which is treated in this plant is not treated in the wastewater plant and even the treated wastewater is not really sufficiently purified. This lack of treatment can be indicated by the high BOD and COD value of the treated wastewater which does not meet the criteria that has been issued by the government of Indonesia.
As an effort to promote sustainable sanitation and to have better results of wastewater treatment plants, a two-step anaerobic technology will be tested at the hospital area. The most suitable mode of operation is currently being tested in Germany after which the facility will be re-located to Indonesia. The first operation step of this digester is to treat sludge sediment from the hospital’s septic tanks which is not further treated and disposed properly in solid waste disposal (sanitary landfill). 
The main goal of this research is to optimize the operation performance of two-step anaerobic reactor treating septic tanks‘ sludge, either by investigating the maximum organic loading rate or by co-digestion with other types of wastes for more resources recovery.  This goal leads to a promotion of affordable sanitation technologies, which have the ability to recover valuable material from wastewater, especially for the less developed countries.
%L UNY24423
%T ANAEROBIC TREATMENT OF SEPTIC TANKS’ SLUDGE WITHIN THE FRAME OF INTEGRATED WATER RESOURCE MANAGEMENT
%D 2012