STUDY OF COMPOST USE AS AN ALTERNATIVE DAILY COVERIN SUKAWINATAN LANDFILL PALEMBANG

The Sukawinatan landfill has been operating with an open dumping for twenty-four years. To extend the operation of the landfill, the landfill mining concept is examined, using compost in the old landfill area as an Alternative Daily Cover. A series of tests on control parameters was performed to determine the suitability of compost as an alternative material. The tests were carried out include: grain size distribution, permeability, Standard Proctor compaction test, plasticity index, pH, temperature, BOD, COD and heavy metal content. The compost sample was taken randomly at two points within the old landfill zone. The sample was filtered through sieve No.04 to remove inert waste and the granules were more than 4.75 mm in diameter. There were five sample variants of compost tested. The soil was taken from one of the locations in Palembang city and identified as organic clays of medium to high plasticity (OH). Based on the results of the test, the compost in Sukawinatan landfill met the requirements in the aspects ofliquid limit, plasticity index, clay fraction, bulk density, permeability, pH dan temperature.The results also showed that the heavy metal content (Pb and Cd) of the compost exceeded the requirements as an organic fertilizer, so if there is landfill mining activity in this landfill, the compost produced is only suitable as an Alternative Daily Cover.