Abstract: A process for disposal of aqueous sludge material and a circular disposal system for stabilization in a landfill. A circular disposal area with a raised central area and peripheral dike is constructed with pond sectors for the deposition, dewatering, and mixing of sludge with a solid absorbent particulate material. The mixing and compaction of the solids produces a permanent, stable landfill which may be raised and the process cycle repeated. Disposal ponds are located such that dewatering and mixing are accomplished by a cableway which operates radially between the raised central area and any point on the peripheral dike.