Abstract: The invention relates to a filter unit (1, 19), having: at least one warp-knitted spacer (3) which comprises a first and a second cover layer (4; 5) having in each case a multiplicity of openings (6) which are delimited by peripheral regions (7), wherein threads (8) extend from the peripheral regions (7) of the first cover layer (4) to peripheral regions (7) of the second cover layer (5), and wherein the at least one warp-knitted spacer is rolled, twisted, and/or at least in one portion is compressed.

Abstract: The present technology is directed generally to fluid treatment systems. In particular, several embodiments are directed toward filter supports configured to be positioned adjacent a filter belt within a filter belt filtration system. In one embodiment, the filter support can have a longitudinal axis generally parallel to the direction of movement of the filter belt. The filter support can include a plurality of struts spaced apart by a plurality of openings, and at least one of the plurality of struts extends across a portion of the filter support such that a longitudinal axis of the at least one strut is positioned at an angle with respect to the longitudinal axis of the filter support.

Abstract: The pool filter cleaner is adapted for use with a diatomaceous earth pool filter. The pool filter cleaner cleans the diatomaceous earth pool filter. The diatomaceous earth pool filter further comprises a diatomaceous filter cartridge. The pool filter cleaner is a water-spraying device. The pool filter cleaner is formed with a spray device that connects to a water source. The spray device surrounds the diatomaceous filter cartridge. The spray device cleans the diatomaceous filter by spraying water on the surface of the diatomaceous filter cartridge. The pool filter cleaner comprises the spray device and a connection. The connection attaches the spray device to the water source.

Abstract: A sludge condensing machine includes: a gravity filtration section conducting a gravity filtering to a sludge while conveying the sludge on an upper surface of a filtration body, and a movement mechanism, disposed at a downstream side of a sludge insertion position of the gravity filtration section, for reducing a dimension of the sludge in a width direction on the filtration body by moving the sludge in a direction intersecting a conveying direction that the sludge is conveyed by the filtration body.

Abstract: A washer press apparatus for washing and dewatering a wide range of solids concentrations of pulp in liquid suspensions includes multiple distinct displacement wash zones about a drum with multiple nips.

Abstract: A suction roll for dewatering a fibrous web, having a rotatable and perforated suction roll jacket and a suction box in the interior of the suction roll. The suction box has a first suction channel that extends in the interior of the roll essentially along the axis of the suction roll. The suction box also has a second suction channel that extends in the interior of the roll along the inner surface of the suction roll jacket and is delimited by seals. The first suction channel is connected to the second suction channel via at least one connecting channel.

Abstract: A separator system for separating feed material into a liquid component and a solids component. The separator system has a roller system supported adjacent to a feed chamber. The roller system comprises a base roller and a press roller. Base perforations are formed in the base roller. The base roller is supported such that a first portion of the base roller is in contact with the feed material within the feed chamber such that a liquids portion of the feed material may flow through the perforations in the base roller. The base roller is rotated such that the base roller removes a solids portion of the feed material from the feed chamber in a solids mat on the surface of the base roller. The press roller engages the solids mat on the base roller to force liquids in the solids mat through the base perforations in the base roller.

Abstract: A solid-liquid separating apparatus is provided with: a separating roll which has a substantially cylindrical shape with a plurality of through holes, which penetrate between an inner surface and an outer surface in radial direction thereof, and is rotatable in circumferential direction thereof; and a pair of separating filter cloths which is endless belts capable of traveling in a rotation direction of the separating roll and are wound around the outer circumference of the separating roll so as to overlap each other, wherein a material supplied between the pair of filter cloths is squeezed by being rolled together with the pair of filter cloths therebetween on the outer circumference of the separating roll, and the material is dehydrated by ventilating via each through hole.

Abstract: The present invention relates generally to a spill collection system comprising a boom for surrounding a spill area and a method for using the boom. In addition, the invention includes several embodiments of extractors for removing fluid from a material such as the boom.

Abstract: A solid-liquid separator using a roller system includes a casing, rollers disposed within the casing and each provided with a screen that is formed in the outer periphery thereof with plural pores for separating via the plural pores a solid substance from a solid-liquid substance disposed outside the rollers and filtering a liquid substance toward inside the rollers, inside drums each disposed along the inner circumference of each of the rollers, and a passageway which is formed by means of the screen and the inner drum and which is provided with an outlet. The liquid substance separated by means of the screen is allowed to flow along the passageway, collected at the outlet and discharged from the outlet.

Abstract: Apparatus improvements to the method for improving belt press dewatering which incorporates a high compression zone with multiple pinch points. Apparatus improvements include a) separate lower permeable belts with different materials, weave patterns wrap and weft thread diameters and opening sizes for each pinch point; b) an apparatus for raising the upper frame for ease of replacing belts and automatic recovery from jamming of belt press; and c) independent gap width and compression adjustments at each pinch point.

Abstract: A suction roll for dewatering a fibrous web, having a rotatable and perforated suction roll jacket and a suction box in the interior of the suction roll. The suction box has a first suction channel that extends in the interior of the roll essentially along the axis of the suction roll. The suction box also has a second suction channel that extends in the interior of the roll along the inner surface of the suction roll jacket and is delimited by seals. The first suction channel is connected to the second suction channel via at least one connecting channel.

Abstract: A solid-liquid separator using a roller system includes a casing, rollers disposed within the casing and each provided with a screen that is formed in an outer periphery thereof with plural pores, a supply device disposed outside the rollers for supplying into the casing under appropriate pressure a solid-liquid mixture to be separated into a solid component via the plural pores and a liquid component filtered inside, a casing wall disposed adjacent to the rollers after the solid-liquid mixture supplied with the supply device is passed through the rollers rotated, a discharge window formed in the casing wall for discharging the solid component, and a pressure application lid formed on the casing wall for stably applying prescribed pressure in a direction of closing the discharge window with a pressure application device.

Abstract: Apparatus for washing and dewatering pump comprising a pair of rotatable press rolls with permeable outer surfaces, a casing comprising a vat in which the rolls are installed, and a feed for feeding the pulp to the gap formed between the vat and the press roll is disclosed. The vat includes a first side vat segment partially enclosing the first press roll and a second side vat segment partially enclosing the second press roll and casing members for each of the vat segments, the first casing member being pivotable about an axis of rotation and between closed and open positions, pulp distribution devices for distributing pulp onto the press rolls, at least one of the pulp distribution devices being mounted on the casing member whereby it is moved away from the press roll together with the casing member when it is opened.

Abstract: A method and device for separating particles from a liquid having particles therein, using a filter sized to permit the liquid to flow through pores, while retaining a substantial portion of the particles on the filter, with an absorbent layer contacting the back of the filter to facilitate liquid movement away from the particles.

Abstract: The present invention relates to a device for separating moisture out of a material, such as manure, paper pulp or the like. The device of the invention comprises two or more perforated draining rollers having a main longitudinal axis and two or more pressing rolls having an axis parallel to the main longitudinal axis of the draining rollers. Each pressing roll is pressed against only one draining roller thereby forming a pressing way between the pressing rolls and the draining rollers to press the moisture out of the material flowing through the pressing way. The device also comprises a positive drive system for rotating just the draining rollers. The pressing rolls are driven by a friction with the draining rollers, thereby ensuring that the device does not stall.

Abstract: An apparatus and method are disclosed for the continuous treatment of the flow of a mixture containing liquids and solids. A pump provides the mixture to tube that includes a woven material. The liquid is filtered from the mixture, leaving a solids-enriched mixture in the tube. The tube may be flexed during the process, freeing solids trapped in the tube to flow through the center of the tube. A valve may be provided to the tube to generate a back-pressure in the system.

Abstract: A separator includes a separation arrangement having a roller; and a belt disposed about the roller. Feed material introduced to the separator such as tar sand, is separated into sand and oil so that discharge from the separator will be substantially separate material streams of sand and oil. A method and system are included.

Abstract: Filtration systems containing a filtration medium and methods related thereto are described herein. The filtration system includes a plurality of fibers of spoolable length, where the fibers are a carbon nanotube-infused fiber material. The filtration systems can be operated with reel-to-reel processing or in a continuous manner in order to sorb hydrophobic materials from a liquid medium. The filtration systems also include various means to remove the hydrophobic materials from the filtration medium, including press rollers and chemical extraction baths. Illustrative liquid media that can be treated with the filtration systems include, for example, hydrophobic materials admixed in an aqueous phase, bilayers (e.g., oil-water bilayers), oil in a subterranean formation, water sources containing trace organic pollutants or trace organic compounds, and fermentation broths.

Abstract: A method for increasing the removal of a higher fraction of liquid from the press cake in any belt press is described. Specifically, the invention incorporates a series of rollers that create multiple pinch points to compress the solid fraction while removing liquid. After each pinch point, the solid material is allowed to separate from the belt, fall by gravity, and repack so that more liquid can be released at each successive pinch point than is possible if the material is fed to multiple rollers and pinch points in series without decompressing as is done is prior art.

Abstract: A horizontal belt filter incorporates a filter web, a belt carrying the web in a substantially horizontal plane, at least one fluid removal member disposed above the web, at least one fluid guide disposed at an end of the fluid removal member and adjacent the web and the belt for receiving liquid runoff channeled to the guide by the fluid removal member, and a rake member disposed above the web on a downstream side of the fluid removal member. The fluid removal member may include at least two linear or straight bars each disposed at an acute angle relative to a respective edge of the filter web, the linear bars being connected to one another to form a V-shaped composite bar having an apex at an upstream side of the direction of belt travel.

Abstract: A horizontal belt filter incorporates a filter web, a belt carrying the web in a substantially horizontal plane, at least one fluid removal member disposed above the web upstream of a rake device. The fluid removal member may comprise a channeling dam in conjunction with at least one fluid guide disposed at an end of the dam and adjacent the web and the belt for receiving liquid runoff channeled to the guide by the dam. The fluid removal member may also comprise a suction bar and associated fluid removal means, and a rake member disposed above the web on a downstream side of the fluid removal member. The fluid removal member may include at least two linear or straight bars each disposed at an acute angle relative to a respective edge of the filter web, the linear bars being connected to one another to form a V-shaped composite bar having an apex at an upstream side of the direction of belt travel.

Abstract: A solid-liquid separator using a roller system includes a casing, rollers disposed within the casing and each provided with a screen that is formed in the outer periphery thereof with plural pores for separating via the plural pores a solid substance from a solid-liquid substance disposed outside the rollers and filtering a liquid substance toward inside the rollers, inside drums each disposed along the inner circumference of each of the rollers, and a passageway which is formed by means of the screen and the inner drum and which is provided with an outlet. The liquid substance separated by means of the screen is allowed to flow along the passageway, collected at the outlet and discharged from the outlet.

Abstract: A solid-liquid separator using a roller system includes a casing, rollers disposed within the casing and each provided with a screen that is formed in an outer periphery thereof with plural pores, a supply device disposed outside the rollers for supplying into the casing under appropriate pressure a solid-liquid mixture to be separated into a solid component via the plural pores and a liquid component filtered inside, a casing wall disposed adjacent to the rollers after the solid-liquid mixture supplied with the supply device is passed through the rollers rotated, a discharge window formed in the casing wall for discharging the solid component, and a pressure application lid formed on the casing wall for stably applying prescribed pressure in a direction of closing the discharge window with a pressure application device.

Abstract: A solid-liquid separating apparatus is provided with: a separating roll which has a substantially cylindrical shape with a plurality of through holes, which penetrate between an inner surface and an outer surface in radial direction thereof, and is rotatable in circumferential direction thereof; and a pair of separating filter cloths which is endless belts capable of traveling in a rotation direction of the separating roll and are wound around the outer circumference of the separating roll so as to overlap each other, wherein a material supplied between the pair of filter cloths is squeezed by being rolled together with the pair of filter cloths therebetween on the outer circumference of the separating roll, and the material is dehydrated by ventilating via each through hole.

Abstract: The invention relates to an apparatus for continuous separation of dry matter from a fluid, comprising an enclosed environment capable of being under vacuum or under positive pressure, in which enclosed environment a number of rollers (1, 3, 4, 4?, 6, 6?, 20, 21, 22, 23) form a chamber which is divided into two or more compartments (12, 13, 24, 27, 25, 26) by filtration means (7, 8, 16, 29, 36, 37, 38, 40), wherein one or more filtrated chambers (9, 10) are placed on the pure side of the filter means. In order to allow for cleaning and/or maintenance of the filtrate chambers, additional filtrate chambers are provided, which are separated from the first filtrate chambers by a wall. One of the filtrate chambers at any time is placed under the filter, while the other filtrate chambers are situated outside the enclosure for maintenance/cleaning.

Abstract: Apparatus for washing and dewatering pump comprising a pair of rotatable press rolls with permeable outer surfaces, a casing comprising a vat in which the rolls are installed, and a feed for feeding the pulp to the gap formed between the vat and the press roll is disclosed. The vat includes a first side vat segment partially enclosing the first press roll and a second side vat segment partially enclosing the second press roll and casing members for each of the vat segments, the first casing member being pivotable about an axis of rotation and between closed and open positions, pulp distribution devices for distributing pulp onto the press rolls, at least one of the pulp distribution devices being mounted on the casing member whereby it is moved away from the press roll together with the casing member when it is opened.

Abstract: Apparatus for washing and dewatering pulp comprising rotatable press rolls including permeable outer surfaces and a casing comprising a vat in which the rolls are installed are disclosed. A feed for feeding the pulp through the gap between the vat and the outer surfaces of the press rolls is provided and the vat includes a vat segment providing at least one compartment between the vat segment and the casing, the at least one compartment extending along the longitudinal extension of one of the first and second rotatable press rolls and a pressure device to maintain the pressure in the at least one compartment corresponding to the pressure in the gap.

Abstract: A filter apparatus for filtering material solids from a liquid having a filter belt driven by a pair of belt transport chains and including a purged seal member to limit bypass of unfiltered fluid around the filter belt. The filter apparatus includes a plurality of flight bars configured to float above the filter belt thereby reducing wear. Also included is a webbing layer provided on filter belt outboard portions including holes with grommets configured to engage with the belt transport chains.

Abstract: A method and an apparatus for separating dry matter from liquid includes an enclosed separation environment capable of being pressure regulated. Within the enclosed separation environment, a suspension is brought into contact with at least one filter so as to accumulate dry matter on the at least one filter. The filter with the dry matter passes through at least one set of rollers such that liquid is removed from the dry matter on the at least one filter to form a substantially dry filter cake. Thereafter, the substantially dry filter cake is removed from the at least one filter. The above steps are performed in the enclosed separation environment either under vacuum or overpressure. The invention may be used in various fields such as the food industry.

Abstract: A belt press solid/liquid separation apparatus is provided for separating organic mixtures with substantial amounts of moisture to produce separated solids with solids content of 50-90% while retaining 99% of the incoming solids in the filter cake. Specifically, the invention incorporates a double-belt press apparatus with a non-permeable upper belt, a highly permeable lower belt, a wedge type zone with adjustable spring compression, and a means for re-screening belt press filtrate with either a single belt press or multiple belt presses configured as a multi-step cascade of belt presses.

Abstract: A belt filter for effecting separation of liquid from solids where, at the collection zone, a filter belt or belts is changed shape so as to provide a supporting shape to bold liquid, which is then fed into a nipping zone. In an embodiment there is a single belt used which is folded in a middle portion to provide the supporting shape.

Abstract: A twin-wire belt press is disclosed for dewatering a fiber suspension and forming a continuous web of the fiber suspension. The twin wire belt includes a plurality of upper and lower rolls, a perforated roll and endless upper and lower wire belts. Dewatering tables are used to support the endless upper and lower wire belts and form a wedge-shaped pressure space between the endless upper and lower wire belts for initially pressing and dewatering the fiber suspension and forming a web therebetween. Roll members, including at least two press rolls which form press roll nips with the perforated roll and another roll, press and dewater the web between the endless upper and lower wire belts.

Abstract: A vibratory separator having a basket with a first side spaced-apart from a second side, screen assembly apparatus mounted in the basket, the screen assembly apparatus having a central portion, a first screen side and a second screen side, central support apparatus connected to the basket and positioned beneath and in contact with the central portion of the screen assembly apparatus, and pressing apparatus on the first side and second side of the basket for pressing down on the first screen side and on the second screen side of the screen assembly apparatus so that the central portion of the screen assembly apparatus is higher than the first screen side and the second screen side.

Abstract: A fluid sterilization apparatus including a sterilization chamber having a cavity therein, and a nozzle for receiving pressurized fluid and directing a spray of the fluid into the cavity. An electron beam generator having an exit window is mounted to the sterilization chamber for directing a beam of electrons through the exit window and into the cavity of the sterilization chamber to irradiate the spray of fluid. The nozzle is configured to direct the spray of fluid substantially parallel and proximate to the exit window.

Abstract: The invention is relative to a device for dehydrating sludge such as occurs in sewage treatment plants in the form of dilute sludge. The receptacle for the sludge contains a sieve surface comprising openings for the passage of liquid. The sieve surface, for its part, is substantially circular can be rotated about an axis (21) running vertically to the sieve surface. The axis (21) of the sieve surface (2) is inclined relative to a horizontal line and is caused to rotate by a drive device (3). The disk-shaped sieve surface (2) is arranged in a container (11) comprising a bottom (13) and a side wall (12) through which side wall a supply line (4) for the sludge and an outlet (41) for the separated water run.

Abstract: Process and decker for bringing together a first aqueous pulp suspension layer with at least one additional suspension layer. The process includes moving the first pulp suspension layer and the at least one additional suspension layer on moving layer supports, and guiding sides of the first pulp suspension layer and the at least one additional suspension layer that are adapted to contact each other on guiding surfaces that are one of stationary and limitedly moving. The guide surfaces include contoured surfaces arranged to run substantially parallel to the layer supports. The process further includes applying the at least one additional suspension layer onto the first pulp suspension layer at a wedge-shaped gap, and draining the first pulp suspension layer and the at least one additional suspension layer. The decker includes at least one rotating cylinder, and an endless wire guided around at least a portion of an outer circumference of the at least one rotating cylinder.

Abstract: A method and apparatus for treating an aqueous-containing sludge in which the sludge is filtered on an elongate moving sheet of a water permeable unwoven fabric on paper. The moving sheet is folded and compressed between rollers whereby to express water therefrom. The folded moving sheet and contained sludge is dried, and the dried sheet and sludge is incinerated. Combustion heat from the incineration step is used in the drying step.

Abstract: Apparatus is disclosed for dewatering aqueous suspensions including a pair of rotatable rolls forming a nip therebetween, so that the aqueous suspension can pass downwardly through the nip and be dewatered by removing a filtrate from the suspension, and the dewatered suspension can pass downwardly from the nip, at least one of the rolls being liquid permeable, and at least one screen adjacent to the roll and disposed below the nip, the screen is separated from the roll by a predetermined distance and extends along its length, the predetermined distance being a sufficient distance so that a film of filtrate on the roll passes between the roll and upper end of the screen on one side of the screen and the dewatered suspension passes on the other side of the screen so that the filtrate is prevented from contacting the dewatered suspension below the nip.

Abstract: A belt press having a frame with a first belt and a second belt rotatably mounted on the frame. A curved inlet guide is movably carried on the frame. The inlet guide has a decreasing radius of curvature from an inlet end to an exit end. A positioning assembly is mounted on the frame and is attached to the inlet end of the inlet guide to raise and lower the inlet end of the inlet guide.

Abstract: Arrangement 1 for washing and dewatering a fiber pulp suspension, which arrangement comprises two hollow, circular-cylindrical screen members 2a, 2b delimited by envelope surface and end walls. The screen members rotate towards each other to form a nip 10, at least one of the said screen members 2a, 2b being arranged in a vat 6 which partially encloses the envelope of the screen member and which, in the direction of rotation of the screen member, converges towards the envelope of the screen member. The invention relates to a sealing arrangement 8 at the end wall of the screen member. By retracting the seal a distance X from the envelope surface of the screen member in a limited area &agr; near the nip 10, the seal is relieved of the very high hydraulic and mechanical pressures which occur in the nip. Wear between the end wall of the drum and the seal at the press nip is reduced. A simple pressurized seal can thus be used with the same low pressure applied along the entire circumference.

Abstract: A method and an apparatus for reducing the moisture content bound by capillary action in fiber cells. To include fine material economically and easily in the process, coarse material is sandwiched on top of fine material and then pressed and dried. The material prepared by grinding and screening is transferred as coarse material to a first spreader hopper, and the screened fine material is transferred over a chute and conveyor belt to a second spreader hopper. The fine material is spread in a thin layer through a vertically adjustable gate from the second spreader hopper onto a spreading, loading and filtering belt, and the coarse material is withdrawn on a transfer conveyor belt running below the first spreader hopper and then is spread through a vertically adjustable gate onto the fine layer, to form a sandwich-like mat.

Abstract: A waste water treating device can be simply installed in a small area and destroy combustible wastes and sludge to reduce fuel consumption cost of a burner. Moreover, the waste water treating device can increase a treating amount of the waste water per unit time to thereby reduce an activation time thereof and decrease installation and maintenance cost, to thereby obtain an economic advantage.

Abstract: According to a waste water treatment method and apparatus of the present invention, a permeable sheet 3 is fed into a treatment tank 2 in which a stream is formed. The waste water, which flows downstream, is caused to pass through the permeable sheet 3, while the permeable sheet 3 travels in the treatment tank 2 so as to traverse the surface of the waste water on a downstream side in the flowing direction of the waste water. Therefore, not only the sludge in the waste water but also the oily substances floating in the waste water can be collected and removed because they cling to the permeable sheet 3 and are gathered by it. As a result, a waste water treatment tank 2 and the like can be maintained in a usable state for a long time. In addition, there can be obtained a treated water to which microbial treatment can be applied.

Abstract: A belt press having a frame with a first belt and a second belt rotatably mounted on the frame. A curved inlet guide is movably carried on the frame. The inlet guide has a decreasing radius of curvature from an inlet end to an exit end. A positioning assembly is mounted on the frame and is attached to the inlet end of the inlet guide to raise and lower the inlet end of the inlet guide.

Abstract: A filter cloth comprising at least a base layer and a filtering layer, characterized in that the ratio T/L of the thickness (T) of the filtering layer to the length (L) of fibers of fiber bundles constituting the filtering layer is 0.02 to 0.7 and the sum of a projected area of the fibers onto the base layer surface is 8 to 350 times the area of the base layer surface and, a filter cloth characterized in being constituted with at least a base layer and a filtering layer mainly composed of fiber bundles of crimped fiber ratio over 5%.

Abstract: According to a waste water treatment method and apparatus of the present invention, a permeable sheet 3 is fed into a treatment tank 2 in which a stream is formed. The waste water, which flows downstream, is caused to pass through the permeable sheet 3, while the permeable sheet 3 travels in the treatment tank 2 so as to traverse the surface of the waste water on a downstream side in the flowing direction of the waste water. Therefore, not only the sludge in the waste water but also the oily substances floating in the waste water can be collected and removed because they cling to the permeable sheet 3 and are gathered by it. As a result, a waste water treatment tank 2 and the like can be maintained in a usable state for a long time. In addition, there can be obtained a treated water to which microbial treatment can be applied.

Abstract: Methods for the concentration of a dilute material such as a fiber suspension are disclosed including enclosing the dilute material between a first straining belt and a second straining belt both moving through endless paths, and in which the width of the first straining belt is greater than the width of the second straining belt, and the method includes causing the longitudinal edges of the first straining belt to overlap the longitudinal edges of the second straining belt in an initial concentration stage, unfolding the longitudinal edges of the first straining belt and then further compressing the concentrated layer produced against the first straining belt in a further concentration stage. Apparatus for carrying out this method is also disclosed.

Abstract: Incorporating a permeable hose within a peristaltic pump results in a unique device that can simultaneously pump, filter and self-clean suspensions, producing a concentrate and clarified liquid stream. This process, termed peristaltic filtration, has wide applicability to a variety of commercial and industrial applications, including dewatering sludge in sand and gravel operations the treatment of water or other streams in industrial plants, municipal wastewater treatment plants, and food processing. The flexing motion that accompanies peristaltic pumping enhances filtration of the suspension by locally increasing the pressure and cleaning the filter by bending the hose to release trapped solids back into the suspension. Peristaltic filtration can be applied to conventional rotary pumps, linear pumps or other configurations. Rotary peristaltic filters are also modular and can be made to be adaptable to a variety of feedstocks.

Abstract: A plurality of unit bags 2a, 2b . . . are composed of a permeable strip-shaped nonwoven and arranged in a successive fashion without break so that they can be easily accommodated and stored by being rolled. An annular elastic body 5 disposed around an opening 3a formed to an end of each bag 2a permits the opening 3a to be opened. Since an optically sensing object or a magnetically sensing object is disposed around the opening 3a or at a position spaced apart from the openings 3a, 3b . . . a prescribed distance, the portion of the sensing object can be positioned by a sensing device 15. Further, when, for example, sludge, and the like containing water are accommodated in a waste accommodating bag 1 and squeezed, the sludge, and the like can be easily dehydrated.