摘要:
A vehicle for skimming and removing a surface layer of particulate material from a bed of such material, the vehicle including skimming means movably mounted on the vehicle for skimming the surface layer of material and a take-away conveyor mounted on the vehicle, the skimming means being arranged to transport the skimmed material to the take-away conveyor which, in turn, conveys the skimmed material to a remote location for collection.
摘要:
A vehicle for skimming and removing a surface layer of particulate material from a bed of such material, the vehicle including skimming means movably mounted on the vehicle for skimming the surface layer of material and a take-away conveyor mounted on the vehicle, the skimming means being arranged to transport the skimmed material to the take-away conveyor which, in turn, conveys the skimmed material to a remote location for collection.
摘要:
The invention relates to an apparatus for fiftering a suspension or emulsion and comprising a bed (6, 7) of a particulate filter material arranged in a container or tank (1). one or more inleta (8) arranged at the lower part of the bed for the suspenaion or emulsion to be filtered. means (3) for removing filtrate and arranged above the bed, elevator means (13) for conveying contaminated fitter medium from the lower part of the bed to a means (14) for washing or other treatment of the filter medium, and means for recycling treated fitter medium to the upper part of the bed. According to the invention, the elevator means (13) for conveying contaminated filter medium is arranged movable along the horizontal extent of the filter bed and is preferably placed on a carrier means (14) which can be given a reciprocating movemeret, is arranged above the filter bed and also carries the means (14) for treating the filter medium.
摘要:
A multi-layer filter, wherein a filter medium inside a rotatable or swingable horizontal drum (3) is formed in a multi-layer shape with a single or a combined grading, specific gravity, and characteristic of filter medium desirably according to the purpose of treatment and washed with raw water while rubbing the filter medium by rorating or swinging the drum (3) so that contaminent can be removed to surely recover the filter medium at each layer, a raw water inflow tube (5) and a filtered water outflow tube (7) are formed in a shape of double-pipe, a sandproof means and a filter medium agitating means are installed on both or either of the tubes, and a cleaning means and an adhesion prevention means for preventing seaweed from adhering to the inside wall of the drum (3) are installed between a filter net (15) and the inside wall of the drum (3), whereby a structure can be simplified, controllability and maintainability can be facilitated, production cost and maintenance cost can be reduced, and durability and filtering efficiency can be increased.
摘要:
A method for the removal of liquid from a mixture (10) of solid particulate matter and liquid comprises the following steps: containment of the mixture inside an envelope (12) which is impermeable or of low permeability to gas and/or liquid and is at least partially supple, generation of a pressure difference (17,11) over said envelope such that the pressure in the interior thereof is lower than that in the environment, and removal, from the envelope (12), of liquid which has separated off from the mixture (10) as a consequence of the pressure difference. The method is in particular suitable for the in situ treatment of soil material (8), the envelope (12) comprising a soil layer (8) which is impermeable to liquid.
摘要:
This invention relates to a novel intermittent slow sand filter and a method of using the intermittent filter. More particularly, this invention pertains to a novel slow sand filter which remains effective, even when intermittently operated, and which can be periodically cleaned without disturbing the action of the intermittent filter. A slow sand filter apparatus comprising: a container having an upper portion and a lower portion; a water inlet in the upper portion of the container, the water inlet being connected to a supply of water; a filter material filling at least the lower portion of the container, the filter material having a top surface below the water inlet; a schmutzdeuke layer on the top surface of the filter material; a water outlet in the lower portion of the container below the top surface of the filter material; and a water level maintenance device in the upper portion which maintains water in the upper portion of the container at a maintenance level above the top surface of the filter material, the maintenance level being a balance between (1) a water maintenance level that is sufficiently deep that water falling from the water inlet onto the top of the water in the container does not significantly disturb the schmutzdeuke layer; and (2) a water maintenance level that is sufficiently shallow that oxygen from the air above the water level can diffuse through the water and reach the schmutzdeuke layer so that the schmutzdeuke layer is maintained in living condition even when there is no flow of water through the water inlet.
摘要:
A method for the removal of liquid from a mixture (10) of solid particulate matter and liquid comprises the following steps: containment of the mixture inside an envelope (12) which is impermeable or of low permeability to gas and/or liquid and is at least partially supple, generation of a pressure difference (17,11) over said envelope such that the pressure in the interior thereof is lower than that in the environment, and removal, from the envelope (12), of liquid which has separated off from the mixture (10) as a consequence of the pressure difference. The method is in particular suitable for the in situ treatment of soil material (8), the envelope (12) comprising a soil layer (8) which is impermeable to liquid.
摘要:
This invention relates to a novel intermittent slow sand filter and a method of using the intermittent filter. More particularly, this invention pertains to a novel slow sand filter which remains effective, even when intermittently operated, and which can be periodically cleaned without disturbing the action of the intermittent filter. A slow sand filter apparatus comprising: a container having an upper portion and a lower portion; a water inlet in the upper portion of the container, the water inlet being connected to a supply of water; a filter material filling at least the lower portion of the container, the filter material having a top surface below the water inlet; a schmutzdeuke layer on the top surface of the filter material; a water outlet in the lower portion of the container below the top surface of the filter material; and a water level maintenance device in the upper portion which maintains water in the upper portion of the container at a maintenance level above the top surface of the filter material, the maintenance level being a balance between (1) a water maintenance level that is sufficiently deep that water falling from the water inlet onto the top of the water in the container does not significantly disturb the schmutzdeuke layer; and (2) a water maintenance level that is sufficiently shallow that oxygen from the air above the water level can diffuse through the water and reach the schmutzdeuke layer so that the schmutzdeuke layer is maintained in living condition even when there is no flow of water through the water inlet.
摘要:
A multi-layer filter, wherein a filter medium inside a rotatable or swingable horizontal drum (3) is formed in a multi-layer shape with a single or a combined grading, specific gravity, and characteristic of filter medium desirably according to the purpose of treatment and washed with raw water while rubbing the filter medium by rorating or swinging the drum (3) so that contaminent can be removed to surely recover the filter medium at each layer, a raw water inflow tube (5) and a filtered water outflow tube (7) are formed in a shape of double-pipe, a sandproof means and a filter medium agitating means are installed on both or either of the tubes, and a cleaning means and an adhesion prevention means for preventing seaweed from adhering to the inside wall of the drum (3) are installed between a filter net (15) and the inside wall of the drum (3), whereby a structure can be simplified, controllability and maintainability can be facilitated, production cost and maintenance cost can be reduced, and durability and filtering efficiency can be increased.
摘要:
The invention relates to an apparatus for filtering a suspension or emulsion and comprising a bed (6, 7) of a particulate filter material arranged in a container or tank (1), one or more inlets (8) arranged at the lower part of the bed for the suspension or emulsion to be filtered, means (3) for removing filtrate and arranged above the bed, elevator means (13) for conveying contaminated filter medium from the lower part of the bed to a means (14) for washing or other treatment of the filter medium, and means for recycling treated filter medium to the upper part of the bed. According to the invention, the elevator means (13) for conveying contaminated filter medium is arranged movable along the horizontal extent of the filter bed and is preferably placed on a carrier means (14) which can be given a reciprocating movement, is arranged above the filter bed and also carries the means (14) for treating the filter medium.