Abstract:
A sludge dehydrating apparatus (200) of the present invention is configured in that power can be provided from both sides of each of the rotating bars (243) of movable disks (230), thus preventing the rotating bars (243) of the movable disks (230) from being deformed even when the apparatus (200) has a large capacity or operates at a low speed, thereby rotating the movable disks (230) smoothly at the same time, and improving dehydration efficiency. In addition, the sludge dehydrating apparatus (200) of the present invention is advantageous in that power can be provided from both of the rotating bars (243) of the movable disks (230) and a driving shaft of a screw (210), thus preventing the driving shaft of the screw (210) from being deformed even when the length of the screw (210) is elongated, thereby preventing faults such as the deformation of fixed disks (220) and movable disks (230).
Abstract:
A gravity feed filtration system which includes a bag reservoir adapted in use to be hung from any suitable means. The bag reservoir has a washable preliminary bag filter for removing sediment and protozoam cysts, an outlet from the bag reservoir and preliminary bag filter being connected to a filter cartridge incorporating in layers a carbon filtration media, an iodinated resin, an iodide scavenging resin and a carbon polishing filtration medium. The layers are such that the carbon pre-filter removes, pesticides, herbicides and organic matter, the iodinated resin introduces iodine to kill bacteria and viruses, the iodide scavenging resin removes the iodine species and the carbon polishing filter medium polishes the water to improve taste. The layers are selected to provide gravity fed water at a rate of about 12 to 15 litres an hour.
Abstract:
[PROBLEMS] A solid-liquid separation device having a solid-liquid separation section provided with adjacent stationary plates and movable plates arranged between the adjacent stationary plates and also having at least one screw extending so as to penetrate the solid-liquid separation section. The movable plates are formed such that they are pushed and moved by the screw that rotates.An object to be processed having entered in the solid-liquid separation section is moved toward the exit of the solid-liquid separation section, and at the same time, filtrate separated from the object is discharged to the outside through a filtrate discharge gap of the solid-liquid separation section. Wear of the movable plates are suppressed with dewatering efficiency for slurry maintained at a high level. [MEANS FOR SOLVING PROBLEMS] The diameter (d) of the shaft (41) of a screw section (21A) on the exit side of the solid-liquid separation section (3) gradually increases from a predetermined position (S 1 ) of the screw in the solid-liquid separation section (3) toward the exit side, and the lead angle of the screw section (21A) is set to the range from 10° to 30°.
Abstract:
It is required to provide a gas hydrate dewatering device which performs dewatering and produces a gas hydrate with a low proportion of included water (40f) continuously at high efficiency, under conditions in which the gas hydrate is not decomposed and the water is not frozen into ice. This is achieved by providing a dewatering device (12) for gas hydrate slurry (37) which eliminates the water (40e) from a slurry in which gas hydrate is dispersed in water, including a dewatering mechanism of a screw press type (41) within an environment which is maintained at temperature and pressure conditions at which the gas hydrate does not decompose and the water does not freeze.
Abstract:
In a screw press, an outer tube (5), over which a screen (4) is tensioned, is divided into a freely rotatable condensing zone at the front half thereof, and a filtering and dewatering zone at the rear half thereof, a freely rotatable screw shaft (7) is provided within the thus-divided outer tube (5a, 5b), filtered fluid is separated from sludge supplied to the starting end of the condensing zone by the screen (4) of the outer tube (5a), and a cake is removed at a discharge port (29) at the rear end of the outer tube (5b) of the filtering and dewatering zone. A sludge supply path (28) is provided in the screw shaft (7), a supply hole (28a) of this supply path (28) is formed at the starting end of the outer tube (5a) of the condensing zone, and a scraper (33) extends on the outer periphery of a screw vane (6) from the starting end to the ending end. The scraper (33) is caused to make pressured sliding contact with the inner peripheral surface of the outer tube (5a), so that filtering and dewatering are performed as the outer tube (5a) of the condensing zone and the screw shaft (7) are rotated.
Abstract:
A filter assembly (110) includes a filter vessel (112) having an inlet (114), an outlet (116), and defining a filter chamber (118) therebetween. A basket assembly (124) is removably supported within said filter chamber (118) and has a diameter less than the diameter of the filter chamber (118) so as to define an annular flow path (128) about the basket assembly (124). The basket assembly (124) includes an outer, permeable member (130) and an inner, permeable member (132) having a diameter which is less than the diameter of the outer, permeable member (130) so as to define an annular space (136) therebetween and an inner flow path (C). The basket assembly (124) supports a bag-type filter (142) over both the inner and outer permeable members (130, 132) bounding the annular space (136) therebetween. The bag-type filter (142) includes a first portion (144) having a first, larger diameter and a second portion (146) having a second, reduced diameter. A transition portion (148) is disposed between the first and second portions (144, 146) of the bag-type filter (142).
Abstract:
A filter assembly (110) includes a filter vessel (112) having an inlet (114), an outlet (116), and defining a filter chamber (118) therebetween. A basket assembly (124) is removably supported within said filter chamber (118) and has a diameter less than the diameter of the filter chamber (118) so as to define an annular flow path (128) about the basket assembly (124). The basket assembly (124) includes an outer, permeable member (130) and an inner, permeable member (132) having a diameter which is less than the diameter of the outer, permeable member (130) so as to define an annular space (136) therebetween and an inner flow path (C). The basket assembly (124) supports a bag-type filter (142) over both the inner and outer permeable members (130, 132) bounding the annular space (136) therebetween. The bag-type filter (142) includes a first portion (144) having a first, larger diameter and a second portion (146) having a second, reduced diameter. A transition portion (148) is disposed between the first and second portions (144, 146) of the bag-type filter (142).