摘要:
A process for the solidification of liquid waste prior to disposal in a landfill, and an impermeable container in which the liquid waste is solidified.
摘要:
A method of transporting solid particulates in an aqueous suspension of the solid particulates, comprising dispersing solid particulates in an aqueous liquid in the presence of at least one mineral suspending agent, wherein solid particulates are transported a distance greater than or equal to 200 m.
摘要:
Method for reclaiming excavations following the exploitation of resources for road engineering characterized by dewatering the fermented sewage sludge from municipal wastewater treatment plants to at least 20% of dry mass and mixing it with ash from biomass combustion and coalassociated shales obtained from bituminous coal mining in the weight ratio of 3 : 2 : 10. The resulting mixture is used for filling the top layer of excavation, with the thickness of 0.5-2.5m, depending on the vegetation.
摘要:
A final disposal site and a waste disposal method capable of handling the disposal of mercury containing wastes are provided. A final disposal site (1) includes a landfill area (3) of which the periphery is defined by a side wall portion (2) and a building (5) which accommodates the landfill area (3) and of which a bottom portion is formed by a bottom plate structure (4). The bottom plate structure (4) includes a first waterproof structure (30) and an RC layer (31) thereabove. A vertical wall (44) provided at the peripheral edge of the RC layer (31), the side wall portion (2), and the RC layer (31) forms a concave area (50) of which the inside is covered by a second waterproof structure, and a traveling path (19) along which a ceiling hoist (18) travels is provided in the bottom portion of the concave area (50).
摘要:
This disclosure relates to a process for treating a tailings stream comprising water and solids. The process involves (a) contacting a gelling agent and an activator with the tailings stream, (b) entrapping the solids within a gel produced from the gelling agent, and (c) depositing the gel into a liquid. This disclosure also relates to a process for treating a tailings stream comprising water and solids beneath a liquid surface. The process involves (a) contacting a gelling agent and an activator with the tailings stream beneath the liquid surface, (b) entrapping the solids within a gel produced from the gelling agent.
摘要:
A landfill (24) has an impermeable liner (26) at its base and sides, and is capped at (28) by a multi-layer cap. The body of waste material (46) within the landfill (24) will undergo degradation. One byproduct will be leachate. Sediment (37) will develop at the bottom of the landfill (24) in the absence of any intervention. Extraction wells (38) extend from the surface (above the cap 28) down to the bottom of the landfill (24). A pump (54) allows leachate to be drawn from the waste material (46), through the extraction well (38). Leachate is extracted at a rate sufficient to create turbulence within the body of waste material (46). The turbulence serves to entrain sediment in the leachate for extraction of the entrained sediment with the leachate.