RU2712603C1 - Geotube and plant for separation of suspensions due filtration using geotube (versions) - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: invention relates to technologies for separation of solid and liquid phases, in particular to devices and methods of use thereof for separating suspensions by filtration, and can be used for purification of natural water, domestic and industrial waste water, extraction of minerals, extraction of bottom sediments from various water bodies. Invention objective consists in creation of a geotube and installation with the help of which it is possible to efficient dehydration of a water-saturated suspension and to release a geotube from sediment for its multiple use. Through port 7 toroidal geotube 3 is filled with water suspension 8. After filling of geotube 3 with suspension 8 and end of intensive filtration process, at which filtrate is removed from entire surface of geotube and from lower part 1.1 of pipe 1, lock 4 is opened between external and internal surfaces of geotube 3 and release of dehydrated residue 9 from geotube 3 is started. For this purpose, under the action of mechanical force 5, axial movement of pipe 1 is performed inside geotube 3, displacing internal part of geotube 3 relative to outer one and turning filled geotube 3 inside out for extraction of dehydrated residue 9. After geotube 3 is freed from deposit 9, pipe 1 is displaced in response to mechanical force 10 to return geotube 3 to torus-like shape. After closure of lock 4 between external and internal surfaces of geotube 3 it is again ready for next cycle of filling with water-saturated suspension 8.

EFFECT: high efficiency of using a geotube and a separation installation of suspensions using a geotube, owing to a technical solution which provides multiple release of the geotube from the sediment.

6 cl, 3 dwg

Description

FIELD OF THE INVENTION

The present invention relates to the field of technologies for the separation of solid and liquid phases, in particular, to devices and methods for their use for separating suspensions by filtration, and can be used for purification of natural water, domestic and industrial wastewater, mining, extraction of bottom precipitation from various water bodies.

State of the art

The prior art is the use of geotubes for the separation and dehydration of large volumes of various suspensions of biowaste, sludge, pulp, which is a mixture of water, soil and other solid fractions. Geotube, as a rule, consists of a shell of filter material and feed ports for feeding pulp from sediment, sludge, sludge, soil, etc. The shell is made of filter woven material of high strength, resistant to biological and chemical effects, having high tensile strength. Geotube is a highly effective filtering tissue system for retaining solid sediments, sludges, etc. Pulp from sewage, sludge, sludge, etc. they are pumped into the geotube, filtration occurs, during which solid fractions and liquid are separated, which flows out through the pores of the geotube material. Filling the volume of the geotube with an aqueous suspension can be carried out in several stages as part of the volume of the geotube is freed from the liquid phase. After the geotube is finally filled with solid fractions, it is either buried or cut (disassembled), and the dehydrated contents are transported to the place of further processing or disposal. The geotube can be with a longitudinal fastener, which is opened to remove the solid phase. After removing the precipitate, the fastener is closed and the next pulp feeding cycle is performed. An example of a geotube and a method for its use are described in the patent for utility model RU 131641 U1, B01D 29/11, publ. 08/27/2013

A significant drawback of the geotube design described above is its low efficiency and productivity during pulp dehydration, since the methods used to remove sludge are ineffective and often lead to a violation of the integrity of the geotube shell.

Disclosure of Invention

The objective of the present invention is to create a geotube, with which it is possible to effectively dehydrate a water-saturated suspension and release the geotube from sediment in order to reuse it.

This problem can be solved using a combination of features set forth in the independent claims. The subject matter of the dependent claims are optimized embodiments.

According to the invention, the geotube contains an elongated along the longitudinal axis of the shell of the filter material with one or more ports for feeding the treated aqueous suspension. The geotube shell is toroidal and provided with a lock, while the geotube is made with the possibility of its eversion when released from dehydrated pulp or sediment.

Preferably, the castle is located between the outer and inner surfaces of the geotube.

According to one embodiment of the invention, the installation for separating suspensions by filtration using a geotube comprises a perforated drainage pipe placed inside the toroidal shell along its length and installed with the possibility of its axial movement in the guide supports. The bottom side of the drain pipe is waterproof to drain the filtrate. The installation is equipped with tension belts designed to hold the outer layer of the geotube shell relative to one of the guide supports.

The length of the drainage perforated pipe must be at least twice the length of the longitudinal axis of the geotube.

According to an alternative embodiment of the invention, the installation for separating suspensions by filtration using a geotube comprises a perforated drainage pipe placed inside the toroidal shell along its length and mounted with the possibility of its axial movement in the guide supports. The bottom side of the drain pipe is waterproof to drain the filtrate. The drain pipe is narrowed in its central part, while the function of the lock to release the geotube from the dehydrated pulp or sludge is performed by a control piston located inside the central part of the toroidal shell, which is movable to form a gap between the piston and the geotube from the geotube side, from which the dehydrated pulp or sediment. The installation is equipped with tension belts designed to hold the outer layer of the geotube shell relative to the guide supports.

As in the first embodiment, the length of the drainage perforated pipe is at least twice the length of the longitudinal axis of the geotube.

Transitions to the narrowed part of the drainage perforated pipe should be either conical or another shape that ensures the effective operation of the geotube.

The plants described above provide high productivity of work related to the separation of suspensions by filtration.

Brief Description of the Drawings

The invention is illustrated by drawings, in which:

in FIG. 1 is a schematic longitudinal sectional view of an embodiment of an apparatus for separating suspensions by filtration using a geotube according to the invention, wherein the geotube is filled with a water-saturated suspension;

in FIG. 2 is a schematic longitudinal sectional view of an embodiment of an apparatus for separating suspensions by filtration using a geotube according to the invention, wherein the geotube is freed from the dehydrated suspension;

in FIG. 3 is a schematic longitudinal sectional view of another embodiment of an apparatus for separating suspensions by filtration using a geotube according to the invention, operating in two directions.

Similar elements in the figures are denoted by the same positions.

The implementation of the invention

The following is a description of the present invention with reference to the drawings and embodiments.

It should be noted that in this description, the toroidal shape of the geotube refers to the shape of the geotube shell, which the shell takes after it is filled with a water-saturated suspension.

In the first embodiment, as shown in FIG. 1, the installation for separating suspensions contains a dense drainage perforated pipe 1 installed with the possibility of axial movement in the guide supports 2. The pipe 1 may be made of metal, plastic or other suitable material, may be cylindrical or with a variable diameter, with a conical transition in the working parts of figure 3. The lower part 1.1 of the pipe 1 is waterproof to drain the filtrate. The specified pipe 1 is placed inside the geotube 3, the filtering shell of which is made in a toroidal shape. Between the outer and inner surfaces of the geotube 3 there is a waterproof lock 4. The geotube 3 is made with the possibility of its inversion when released from dehydrated pulp or sediment. The pipe 1 is connected with the geotube 3 by a high coefficient of friction, so that the coaxial movement of the pipe 1 under the action of mechanical forces 5, 10 will also shift the inner surface of the geotube 3. The unit is equipped with tension belts 6 designed to hold the outer layer of the geotube shell 3 relatively one of the guide supports 2 during axial movement of the pipe 1. The length of the drainage perforated pipe 1 is at least two times the length of the longitudinal axis of the geotube 3.

Installation for the separation of suspensions works as follows. Through port 7, the geotube 3 is filled with an aqueous suspension of 8. After filling the geotube 3 with suspension 8 and the end of the intensive filtration process, in which the filtrate is removed over the entire surface of the geotube and at the bottom 1.1 of pipe 1, open the lock 4 between the outer and inner surfaces of the geotube 3 and begin the release of dehydrated sludge 9 from geotube 3 (Fig. 2). To do this, under the action of mechanical force 5, the pipe 1 is axially moved inside the geotube 3, while displacing the inner part of the geotube 3 relative to the external one and turning the filled geotube 3 inside out to extract dehydrated sludge 9. After releasing the geotube 3 from the sediment 9, pipe 1 is subjected to mechanical force 10 move in the opposite position, returning the geotube 3 toroidal shape. After closing the castle 4 between the outer and inner surfaces of the geotube 3, it is again ready for the next cycle of filling with water-saturated suspension 8.

The following is a description of an alternative embodiment of a geotube according to the invention. This installation provides the functioning of the inverted geotube in two directions, as shown in FIG. 3.

As in the first embodiment, the installation for separating suspensions contains a dense drainage perforated pipe 1, mounted with the possibility of axial movement in the guide supports 2. The pipe 1 may be made of metal, plastic or other suitable material. The lower part 1.1 of the pipe 1 is waterproof to drain the filtrate. The difference from the first embodiment of the installation is that the drain pipe 1 is made narrowed in its central part. Transitions to the narrowed part of the drainage perforated pipe 1 are made either conical or any other shape that provides effective dehydration and reduced wear of the geotube material. The specified pipe 1 is placed inside the geotube 3, the filtering shell of which is made in a toroidal shape. The function of the lock 4 for releasing the geotube from dehydrated pulp or sludge is performed by a control piston 11 located inside the central part of the toroidal shell, moving along the geotube to form a gap between the piston and the geotube when unloading from sediments and closing the gap in the opposite filling part of the geotube. The piston 11 is installed in the guiding device 12. The piston 11 provides a gap between the supporting hoop-lock 4 when unloading the geotube 3 and a seal with the opposite loading part of the geotube. The installation is equipped with tension belts 6, designed to hold the outer layer of the shell of the geotube 3 relative to the guide supports 2. The length of the drainage perforated pipe 1 is at least two times the length of the longitudinal axis of the geotube.

The installation consists of two parts of the geotube 3, one of which is filled through the corresponding port 7 with pulp or suspension 8 with sediment - the right side of the geotube 3 (Fig. 3), and the other part of the geotube 3 is emptied from the dehydrated pulp - the left side. The drain pipe 1 is connected with the geotube 3 by a high coefficient of friction, so that the coaxial movement of the pipe 1 shifts the inner surface of the geotube 3 with itself. When entering the geotube 3, when it is emptied, it expands to a size slightly smaller than the filled geotube 3. needed to complete the emptying of the geotube and reduce the wear of its fabric. The movement of the drain pipe 1 is carried out mechanically under the action of force 5.

After filling the geotube with pulp or suspension 8 and the end of intensive filtration, the moving control piston 11 moving free up space between itself and the supporting hoop-lock 4 for unloading the dehydrated pulp or sludge 9 from the geotube 3, and the drain pipe 1 squeezes the sediment 9 out through the formed gap, turning this part of the geotube 3 inside out. The control piston 11 at this moment closes the gap between itself and the other supporting hoop-lock 4 of the other part of the geotube 3 and begins to fill it with pulp or suspension 8. The drain pipe 1 is moved in the opposite direction under the action of the force 10 applied to it.

Drain pipes with a conical or any other extension in the working part can be used in the first embodiment of the present invention fig. 1 and 2.

Thus, the installations described above provide high productivity of work related to the separation of suspensions by filtration.

It should be noted that the use of the present invention involves various combinations of embodiments that do not go beyond the scope of protection.

Claims (6)

1. Geotube containing elongated along the longitudinal axis of the shell of the filter material with one or more ports for feeding the treated aqueous suspension, characterized in that the shell of the filled geotube is toroidal and provided with a lock, while the geotube is made with the possibility of turning out when released from the dehydrated pulp or sediment. 2. A geotube according to claim 1, characterized in that the castle is located between the outer and inner surfaces of the geotube. 3. Installation for separating suspensions by filtration using a geotube according to claim 1 or 2, containing a perforated drainage pipe placed inside the toroidal shell along its length, installed with the possibility of its axial movement in the guide supports, and the lower side of the drainage pipe is made waterproof for drainage filtrate, while the installation is equipped with tension belts designed to hold the outer layer of the geotube shell relative to one of the guide supports. 4. Installation according to claim 3, characterized in that the length of the drainage perforated pipe is at least two times the length of the longitudinal axis of the geotube. 5. Installation for separating suspensions by filtering using a geotube according to claim 1, containing a perforated drainage pipe placed inside the toroidal shell along its length, installed with the possibility of its axial movement in the guide supports, the bottom side of the drainage pipe is waterproof for drainage of the filtrate, drainage the pipe is made narrowed in its central part, while the function of the lock for releasing the geotube from dehydrated pulp or sludge is performed inside on the inside of the toroidal shell, a regulating piston mounted with the possibility of longitudinal movement to form a gap between the piston and the geotube when unloading the geotube from which the dehydrated pulp or sediment is squeezed out, and at the same time sealing the connection with the opposite loading part of the geotube, the installation is equipped with tension belts designed to hold the outer layer of the geotube shell relative to the guide supports. 6. Installation according to claim 5, characterized in that the length of the drainage perforated pipe is at least two times the length of the longitudinal axis of the geotube.

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