摘要:
The invention provides a geosynthetic clay liner comprising: at least one geosynthetic layer; and a bentonite barrier composition comprising: bentonite and a polyanionic low molecular weight polymer.
摘要:
The invention provides a method comprising: providing a bentonite barrier composition comprising: bentonite; and a polyanionic low molecular weight polymer; and forming a containment using the bentonite barrier composition to provide at least partial separation for a containment from its environment.
摘要:
According to an embodiment, a method for thermally insulating a portion of a tubular located inside an enclosed conduit comprises the steps of: (A) introducing a grouting composition into an annulus between the tubular and the enclosed conduit, the grouting composition comprising: (i) a water-swellable binding material comprising water-swellable clay; (ii) an aqueous liquid, wherein the aqueous liquid is the continuous phase of the grouting composition; and (iii) an insulating material; and (B) allowing the grouting composition to set after the step of introducing, wherein after setting the grouting composition has a thermal conductivity of less than 0.3 BTU/hr . ft . °F (0.5 w/m °C). According to another embodiment, a grouting composition for use in insulating a portion of a tubular located inside an enclosed conduit comprises: (A) a water-swellable binding material comprising water-swellable clay; (B) an aqueous liquid, wherein the aqueous liquid is the continuous phase of the grouting composition; and (C) an insulating material, wherein after the grouting composition has set, the grouting composition has a thermal conductivity of less than 0.3 BTU/hr . ft . °F (0.5 w/m °C).
摘要:
A composition for use in producing a foundry mold. The composition has a binder, which may include a smectite clay. The composition also has a modifier, which may include a metal carbonate. The composition also includes a foundry sand.
摘要:
Compositions including pellets of alum, a smectite mineral material and optionally sodium or calcium carbonate that can be delivered to a phosphate impoundment located at the bottom of a body of water at the bottom. The pellets of alum, smectite mineral material and optionally sodium or calcium carbonate are dropped through the body of water so that the alum is released when the pellet reaches the bottom of the impoundment thereby treating the phosphates.
摘要:
A flocculation and dewatering system, for separating solid-liquid mixtures and for recycling and reconditionning of fluids, may include a solid-liquid sorter; a flocculation chamber including a flocculation trough that comprises at least one baffle, an injection port for introducing a flocculant, and an outlet for removing a flocculated fluid; a dewatering rack in which the outlet introduces the flocculated fluid into the dewatering rack that comprises at least one filtration collection bag and a filter press; and a pump for pumping fluids in a conduit network running at least partially through the flocculation and dewatering system.
摘要:
A composition for use in producing a foundry mold. The composition has a binder, which may include a smectite clay. The composition also has a modifier, which may include a metal carbonate. The composition also includes a foundry sand.
摘要:
A method for separating solid-liquid mixtures and for recycling and reconditioning of fluids may include providing a returned fluid comprising a fluid and a solid contaminant; introducing the returned fluid into a solid-liquid sorter thereby separating the returned fluid into an overflow, generally comprising reusable fluids, and an underflow, generally comprising solid contaminants; flocculating the underflow in a flocculating chamber thereby forming a flocculated fluid; and dewatering the flocculated fluid using a dewatering rack.
摘要:
A method may include providing a returned fluid comprising a fluid; and a solid contaminant; introducing the returned fluid into a solid-liquid sorter thereby separating the returned fluid into an overflow and underflow; flocculating the underflow in a flocculating chamber thereby forming a flocculated fluid; and dewatering the flocculated fluid using a dewatering rack.