Abstract: An assembled subway station and a construction method thereof are provided. The assembled subway station includes a plurality of components combined in a ring shape, comprising a bottom plate component, two bottom corner components, two side wall components, a middle plate component, two top corner components, and a top plate component. Connection surfaces of each component are each provided with a concave-convex structure being matched with another concave-convex structure on a relevant connection surface of an adjacent component. Butt joint positions of two adjacent components are filled with sealing structures. The embedded grooves of two adjacent components are oppositely arranged, and connecting members for exerting opposite fastening forces on the two adjacent components are installed in the oppositely arranged embedded grooves.

Abstract: A connection assembly for prefabricated components provided herein includes two C-shaped groove members and an H-shaped connection member. The C-shaped groove members are each provided with a component connecting part for fixedly connecting with a component, the H-shaped connection member includes a middle web and two side flanges, notches of the C-shaped groove members are in clearance fit with the web, and the side flanges are in stop fit with inverted edges of the C-shaped groove members when the H-shaped connection member is inserted between the C-shaped groove members. The C-shaped groove members and/or the H-shaped connection member are each provided with wedge members, and the wedge members have wedge surfaces for guiding the two C-shaped groove members to be fastened oppositely.

Abstract: A connection assembly for prefabricated components provided herein includes two C-shaped groove members and an H-shaped connection member. The C-shaped groove members are each provided with a component connecting part for fixedly connecting with a component, the H-shaped connection member includes a middle web and two side flanges, notches of the C-shaped groove members are in clearance fit with the web, and the side flanges are in stop fit with inverted edges of the C-shaped groove members when the H-shaped connection member is inserted between the C-shaped groove members. The C-shaped groove members and/or the H-shaped connection member are each provided with wedge members, and the wedge members have wedge surfaces for guiding the two C-shaped groove members to be fastened oppositely. The integrated H-shaped connection member replaces multiple bolts to meet the requirements of high-strength connection, which simplifies the operation and improves the construction efficiency.

Abstract: A mechanical lock for building component connection includes a plug element (1) and a lock bod part (2). The plug element (1) includes a plug shell (10), a plug pin structure (11), and a plug transmission structure. The plug pin structure (11) is movably installed in the plug shell (10). The plug transmission structure is in transmission connection with the plug pin structure (11). An end of the plug pin structure (11) is provided with a stop part (110). The lock bod part (2) includes a lock body shell (20), a bracing structure (21), and a lock body transmission structure. An insertion channel (23) matched with the plug pin structure (11) is formed in the lock body shell (20). The lock body transmission structure is in transmission connection with the bracing structure (21).

Abstract: An assembled subway station and a construction method thereof are provided. The assembled subway station includes a plurality of components combined in a ring shape, comprising a bottom plate component, two bottom corner components, two side wall components, a middle plate component, two top corner components, and a top plate component. Connection surfaces of each component are each provided with a concave-convex structure being matched with another concave-convex structure on a relevant connection surface of an adjacent component. Butt joint positions of two adjacent components are filled with sealing structures. The embedded grooves of two adjacent components are oppositely arranged, and connecting members for exerting opposite fastening forces on the two adjacent components are installed in the oppositely arranged embedded grooves.

Abstract: A connection lock for prefabricated components includes an auxiliary part and a main part which are each provided with a fixing structure for connecting with a prefabricated component in an anchoring fit manner. The auxiliary part includes an auxiliary part body, an auxiliary part transmission structure, and a lock pin structure which is movably mounted to the auxiliary part body. The auxiliary part transmission structure is in transmission fit with the lock pin structure. The main part includes a main part body, a main part transmission structure, and a locking structure. An inserting channel fitted with the lock pin structure is formed in the main part body. The locking structure is adjustably mounted in the main part body. The main part transmission structure is in transmission fit with the locking structure. It is rapid and convenient to operate, and the construction efficiency is higher than traditional construction methods.

Abstract: A method for treating a water-containing substance, including: mixing a water-containing substance with a solvent at a first temperature to obtain a mixture containing a solid substance and a liquid substance; conducting a first separation treatment of the mixture to obtain the solid substance and the liquid substance; and conducting a second separation treatment of the liquid substance obtained by the first separation treatment at a second temperature to obtain an aqueous phase and an organic phase, the organic phase contains the solvent. The mutual solubility of the solvent and water at the first temperature is higher than that of the solvent and water at the second temperature, so that the separation and recovery of water is achieved by liquid-liquid separation without phase transition in the method for treating a water-containing substance, so the energy consumption can be effectively reduced. The invention further relates to a corresponding device.

Abstract: Produced water, for example from a steam assisted gravity drainage (SAGD) or cyclic steam stimulation (CSS) heavy oil recovery operation, is treated to recover water that is re-used to create steam. The produced water is treated in one or more thermal treatment devices such as an evaporator and a crystallizer. The thermal treatment produces a slurry comprising dispersed or dissolved salts and organic compounds. A water-miscible solvent for one or more of the organic compounds, for example methanol, is added to the slurry. The solids precipitate and are separated from the slurry. The solvent may be recovered for re-use in treating more slurry.

Abstract: Water, for example produced water from a steam assisted gravity drainage (SAGD) or cyclic steam stimulation (CSS) heavy oil recovery operation, is treated, for example to recover water re-use in creating steam. The produced water is concentrated, for example in one or more thermal treatment devices such as an evaporator and a crystallizer. A solvent and a compound or solution comprising multivalent cations is added to the concentrate. Solids precipitate and are separated from the concentrate. The solvent may be recovered for re-use in treating more concentrate.

Abstract: A method and system for reducing a water content in a substance, comprising: mixing a water-and-solid-containing substance with a liquefied gas solvent creating a mixture and at least part of water in the water-and-solid-containing substance to be extracted into the liquefied gas solvent; separating the mixture into a substance with a decreased water content and a solvent with an increased water content, comprising the liquefied gas solvent and water extracted from the water-and-solid-containing substance; separating the solvent with an increased water content into a liquefied-gas-solvent-rich phase and a water-rich phase by changing a temperature of the solvent with an increased water content, and in a process of changing the temperature, keeping the temperature to be lower than a boiling point of the liquefied gas solvent under a pressure in the process; and returning at least part of the liquefied-gas-solvent-rich phase to be used as a solvent in creating the mixture.

Abstract: Water, for example produced water from a steam assisted gravity drainage (SAGD) or cyclic steam stimulation (CSS) heavy oil recovery operation, is treated, for example to recover water re-use in creating steam. The produced water is concentrated, for example in one or more thermal treatment devices such as an evaporator and a crystallizer. A solvent and a compound or solution comprising multivalent cations is added to the concentrate. Solids precipitate and are separated from the concentrate. The solvent may be recovered for re-use in treating more concentrate.

Abstract: Produced water, for example from a steam assisted gravity drainage (SAGD) or cyclic steam stimulation (CSS) heavy oil recovery operation, is treated to recover water that is re-used to create steam. The produced water is treated in one or more thermal treatment devices such as an evaporator and a crystallizer. The thermal treatment produces a slurry comprising dispersed or dissolved salts and organic compounds. A water-miscible solvent for one or more of the organic compounds, for example methanol, is added to the slurry. The solids precipitate and are separated from the slurry. The solvent may be recovered for re-use in treating more slurry.

Abstract: A method for treatment of an aqueous oily solution includes combining the aqueous oily solution with one or more miscible organic solvents to produce a mixture of precipitated solids and a liquid phase; separating the precipitated solids from the liquid phase; separating the liquid phase at least into an organic phase and an aqueous phase; and removing at least a portion of one or more oily substances from the organic phase. A system for treatment of an aqueous oily solution is also presented.