Composition on Characteristics of Solid Waste: A Case Study at Landfill, Mojokerto, Indonesia

Solid waste composition and characteristics are important variables to consider by which appropriate management and treatment should be applied. The study was conducted to explore the composition and characteristics of the solid waste at Landfill Randegan, Mojokerto City, Indonesia. The Landfill consists of passive zone with deposit solid waste covering the area of 3798 m2 and active zone with new transporting solid waste covering 5726.809 m2 in area. In the passive zone, the composition and characteristics of deposit solid waste were explored by manual excavation of 3.0 - 5.0 m in depth. Composite samples of solid waste-soil were obtained at the depth of 1,0 m each and analyzed in the laboratory. From the total predicted volume of deposit solid waste of 14,718 m2, the dominant composition observed of ranged 60.15% - 72.30% was soil-like texture. In the active zone, the daily solid waste volume was determined by prediction the total volume of all trucks transporting and loading the solid waste in the landfill. Of the average new waste transporting the landfill of 231.33m2/day, the dominant composition of 48.59% was food waste. The new solid waste consisted of 80.21% wet waste and 19.79% dry waste one. It was concluded that dominant composition of solid waste in passive zone was soil-like texture and showed high potential for covering soil and modified compost material by landfill mining. In the active zone, the solid waste was dominated by wet waste and appropriate for modified composting technology or Material Recovery Facilities (MRF)