JP7109103B2 - Sludge water absorption sandbag - Google Patents

Description

The present invention relates to a sludge water absorbing sandbag. More specifically, on the floor surface of suspended sludge water and sewage that have accumulated in narrow places such as underfloor flooded in heavy rain disasters, other disaster sites, construction sites, hazardous materials storage areas, pig farms, etc. The present invention relates to a sludge-absorbing sandbag capable of absorbing and holding leaked heavy metal concentrated sludge water, radioactively contaminated suspended sludge water, VOC-contaminated sludge water, etc., and easily discharging sewage and suspended solids to the outside.

In recent years, after floods such as flooding of rivers caused by torrential rains and typhoons have flooded above and below the floor and the water has receded, coarse particles such as sand, coarse particles such as filth, and fine suspended matter such as filth Sludge water containing fine suspended solids such as organic sludge and silt remains, and great effort is required to remove it. Specifically, a large amount of sludge stays under the floor after the floor and underfloor are submerged in a flood and the water recedes. Sludge water that has accumulated under the floor surrounded by concrete foundations can be treated by drying it naturally or discharging it with a pump. It stays in the depression at a depth of several millimeters to ten-odd millimeters. Especially in recent houses, unlike the tatami-mat type, the living surface has many floors, and it is not possible to enter under the floor. Extremely. In addition, there is a problem that pests and fungi occur due to the stagnation of the retained sludge water, which is unsanitary, and that it cannot be used as a residence during that time.
In addition, it is absorbed by familiar materials such as rags, lime, rice husks, newspapers, etc. in the finishing work of the floor surface of construction sites and construction sites, and the discharge treatment of livestock sludge water on the floor surface of livestock farms such as pig farms. The work involved raking and collecting the waste with a brush or a broom, scooping it up with a shovel and discharging it, and then wiping it up with a mop.
In addition, when removing heavy metal concentrated sludge water, radioactively contaminated suspended sludge water, and VOC contaminated sludge water that have accumulated on the floor of a hazardous materials storage facility due to leakage, etc., thin sludge is removed even if it is drained by a pump on the floor. It is difficult to completely remove the water layer, and it is even more difficult to remove fine and dangerous dirt.

Therefore, in recent years, various studies have been made to solve these problems.
For example, in (Patent Document 1) and (Patent Document 2), a mixture of thinning wood chips and starch is used to increase the water absorption rate and expand rapidly, and after use, it is buried in the soil for easy biodegradation treatment. sandbags are disclosed. In addition, (Patent Document 3) and (Patent Document 4) disclose a soil solidification agent that quickly solidifies sludge-like sludge simply by spraying it on the sludge-like sludge, and improves the efficiency of carrying out and removing sludge. It is

JP-A-2007-92486 JP 2007-138690 A Japanese Unexamined Patent Application Publication No. 2001-104998 JP 2005-113025 A

However, the techniques described in the prior art have the following problems.
That is, in the techniques of (Patent Document 1) and (Patent Document 2), those using vegetable polymers such as starch are weak in water supply capacity and water retention capacity, and sandbags are lifted during drainage work. When pressure is applied, the water that is not retained falls out, and the work is complicated and lacks workability. In addition, since it only absorbs water in the sludge water, it has a problem that suspended matter such as filth, silt-like matter and sand-like matter cannot be removed. Furthermore, there is a problem that the suspended matter deposits on the surface of the polymer, causing clogging, further reducing water absorption and lowering workability.
・The technology of (Patent Document 3) and (Patent Document 4) is to spray the solidifying agent on the sludge water, then mix it with the sludge water and leave it until it solidifies. Although there is a work process of discharging, there was a problem that workability is extremely poor in narrow places such as under the floor and it is difficult to adopt.
In addition, there has been a problem that workability and safety are lacking because post-treatment of silt, fine particles, etc. is required on the floors of construction sites, construction sites, storage facilities for hazardous materials, and the like.
In the event of a nuclear power plant accident, employees cannot directly touch the radioactive contaminated muddy water that has accumulated in the drainage gutters, wiring pits, and pits inside the building, so they can only perform work such as suction treatment from a distance. In particular, it is extremely difficult to treat fine contaminants and the like, so there has been a demand for a treatment method that streamlines the work and is excellent in safety.

The present invention solves the problems and demands of the above-mentioned conventional technology, and the sludge water is placed on the sludge or sludge that has accumulated in narrow places such as under the floor of a house or on the floor of a hazardous material storage place. After absorbing and adsorbing moisture, fine organic matter, fine suspended matter such as silt, etc., it is possible to suspend dirt, silt, etc. on the floor while absorbing and holding moisture, fine suspended matter, etc. without leaking. To provide a sludge water-absorbing sandbag capable of entangling and holding turbid matter in adhering parts, remarkably improving the workability of removing sludge water, saving greenery and being excellent in safety.

In order to achieve the above objects, the present invention has the following configurations.
The sludge water absorption sandbag according to claim 1 of the present invention includes an attachment part for attaching suspended solids such as fine sludge and suspended solids, a water-permeable bag-like part having the attachment part on the outer peripheral surface, and a water-absorbing resin housed in the bag-like portion.
This configuration has the following functions and effects.
(a) Coarse-grain suspended matter such as filth and silt can be entwined and held by the adhesion part on the surface. It can be attached and removed.
(b) Since the bag-shaped portion is water-permeable, it is possible to pass fine suspended solids composed of fine organic matter and silt, and sewage, and lead them to the included water-absorbing resin layer.
(c) Fine suspended solids and sewage that have passed through the bag-like portion are absorbed and adsorbed by the water-absorbing resin and are firmly held in the gel.
(d) By adjusting the amount of water-absorbent resin used so that the amount of water absorbed is 1 to 60 kg, the sludge water-absorbing sandbags after water absorption can be easily transported, improving workability.
(e) Since the water-absorbing resin gels in the water-absorbing resin sandbag, it can be made to have a hardness that is convenient for transportation. There is no leakage of liquid such as sewage and fine suspended solids during transportation, and transportation work to the outside is easy and excellent in workability and safety. In particular, it has been found that workability, safety and labor saving are remarkably improved when discharging stagnant sludge water in a narrow space such as under the floor of a house or on the floor surface of a hazardous material storage area.

Here, as the adhering portion, a fibrous substance raised or fixed to the surface of the bag-like portion, or a material having a fine porous structure with excellent water absorption and capillary water absorption and adsorption action is preferable.
In addition, on the surface of the sheet constituting the bag-like portion, a loop pile-like flocked portion of fibers and fine nets is formed on the upper surface of the sheet of the bag-like portion. One surface of which is bent into a wavy shape of up to 10 mm and fixed to the sheet surface of the bag by welding or adhesion, or the upper surface of the bag is fluffed with a raising machine, etc. are used.
As the loop-like object, a mesh having a mesh size of 0.1 to 10 mm may be used.
The adhering portion allows sludge water to be bound and entangled by capillary action between fibers and Van der Waals force of sludge.

Materials for the bag-like portion include water-permeable woven fabrics and non-woven fabrics having pore diameters that allow passage of water, fine suspended matter, and fine suspended matter such as silt but do not allow passage of water-absorbing resin particles, soft synthetic resin sheets, A water-impermeable sheet such as a rubber sheet is made of a material having micropores which allow the suspension to pass through but not the water-absorbing resin particles. As the water-permeable woven fabric or non-woven fabric, a hydrophilic synthetic resin or the like is preferably used.
Specifically, as the nonwoven fabric, those made of fibers of polyester, polyolefin, polyvinyl alcohol, polyacrylate, polyurethane, polyamide, etc. obtained by a spunbond method, a hydroentanglement method, or the like can be used. The woven fabric includes natural fibers such as cellulose fibers and protein fibers, regenerated fibers such as viscose method rayon, semi-synthetic fibers such as cellulose acetate fibers, synthetic fibers such as polyamide, polyvinyl alcohol, polyester and polyacrylate, and PET bottles. Recycled products obtained by regenerating synthetic resin such as packaging materials and the like can be used.

As the water-absorbent resin, a material suitable for electrolyte-containing water such as freshwater such as floodwater and seawater such as storm surge is selected.
Water-absorbent resins that absorb fresh water include polyaspartate-based, polyglutamate-based, polyalginate-based, starch-based, cellulose-based, and other natural product-based resins, and starch-based resins obtained by grafting acrylate onto starch. , synthetic carboxyl such as cellulose-based, acrylic acid-based polymer, polysulfonate-based, maleic anhydride-based, polyacrylamide-based, polyvinyl alcohol-based, modified polyethylene oxide, etc. Synthetic resins having hydrophilic functional groups such as groups, hydroxyl groups, ether groups, and amide groups are used.
As the water-absorbent resin that absorbs electrolyte-containing water, acrylamide/tert-butylsulfonic acid hydrophilic copolymer, nonionic water-absorbent resin, and the like are used.

According to claim 2 of the present invention, there is provided a sludge water absorbing sandbag according to claim 1, which has a structure in which a water-permeable auxiliary material is dispersedly mixed in the water-absorbent resin.
With this configuration, in addition to the actions and effects obtained in claim 1, the following actions and effects are obtained.
(a) When the water-absorbing resin layer in the bag-shaped part is soaked in water, only the surface absorbs water first and causes gelation swelling, forming a water-impermeable layer. , silt, and fine suspended matter are hindered from passing through, the gelation speed of the whole is inhibited, and it takes time for gelation, and it has a problem that it takes a long time to absorb sludge water. However, by dispersing and mixing the water flow aid with the water absorbent resin, the sludge water flows through the inside and the outer surface of the water flow aid and diffuses throughout the inside of the water absorbent resin layer. The absorption speed of the sludge water can be remarkably increased, and the working time can be remarkably shortened.
(b) Since the water-permeable auxiliary material is dispersed and mixed in the water-absorbent resin, the water-absorbent resin absorbs water from the sludge water and expands into a gel, while at the same time allowing water to flow between the water-absorbent resin and the water-absorbent resin. Fine suspended matter such as fine organic sludge and silt can be captured and held between the auxiliary materials.
(C) Since sludge water is absorbed by the entire water-absorbing resin, the speed of absorption of sludge water is high, and fine suspended solids such as coarse-grained suspended solids, silt, and fine suspended solids are accompanied by water, Coarse suspended solids and fine suspended solids are caught by being entangled between fibers in the adhering part and bag-like part, and silt and fine suspended solids pass through the bag-like part and enter the water-absorbent resin layer. Attracted and held.
(d) Since part of the water-permeability aid is exposed on the surface of the water-absorbing resin layer, clogging of the surface of the water-absorbing resin layer can be prevented, and the water-absorbing ability of the water-absorbing resin can be maintained.

Here, the blending amount of the water flow aid and the water-absorbing resin is 99.5 vol % or less, preferably 90 vol % or less, depending on the type of the water-absorbing resin. If the content of the water-absorbing resin exceeds 90 vol%, when the water-absorbing resin starts to absorb water, the surface tends to gel and swell. As a result, an impermeable layer is formed on the surface of the water-absorbing resin layer, and the gelation speed of the entire water-absorbing resin tends to decrease. It is not preferable because it decreases.

0.7 to 10 vol % or more of the water flow aid is mixed.
It is preferable to use a substance having a specific gravity close to that of the water-absorbing resin as the water-passage aid. This is because it is easy to uniformly disperse and mix with the water absorbent resin. Specifically, hydrophilic powdered coconut shells, porous materials such as rice husks, perlite, pulp sludge powder, and the like are used.
Among them, fibrous substances such as talc powder containing cellulose as a main component are preferably used.
When used for sludge water with a large specific gravity, a weight such as sand may be added as appropriate.

The sludge water absorbing sandbag according to claim 3 of the present invention is the sludge water absorbing sandbag according to claim 1, wherein the attachment part is a vegetable material such as cotton, cellulose fiber, straw, bamboo fiber, kenaf, palm, etc. fixed to the surface of the bag-like part Fibers, chemical fibers such as rayon, non-woven fabrics of inorganic fibers such as rock wool and glass wool, woven fabrics, crushed coconut shell powder, porous materials such as rice husks, felt and open-cell sponges, hydrophilic melamine resins, urethane resins, It has a structure formed of a material such as a fibrous material having a fine porous structure with excellent water absorption and capillary water absorption and adsorption action formed of one or more fibers such as cellulose.
With this configuration, in addition to the actions and effects obtained in claim 1, the following actions and effects are obtained.
(a) Since the surface is provided with an adhesion portion, suspended solids in the sludge water can be entangled.
(b) Since a large number of fibrous substances in the adhering portion entangle coarse-grained or fine-grained suspended matter, the suspended matter is excellent in retention.

Here, as the adhering portion, one that is easily wetted and has a large surface tension is used.
This is to quickly disperse and infiltrate the moisture, fine organic matter and silt in the sludge water throughout the water absorbent resin layer.
Although the height of the fibrous material in the attached portion varies depending on the material, it is preferably several mm to 10 mm. This is because suspended solids in sludge water are easily entwined and easily retained.
The basis weight of the fibrous material in the attached portion varies depending on the material, but it is 10 to 100 g/m ² .
is preferred. This is because it was found that coarse particles in the suspension are easily entangled and captured.
As for the rigidity of the fibrous material of the attached portion, it is preferable to use a fiber diameter of about 0.1 d to 15 d, although it varies depending on the material.
In addition, on the surface of the sheet constituting the bag-like portion, fibers, non-woven fabric, and fine mesh are used as a three-dimensional loop pile-shaped flocking portion, and the outer peripheral surface of the sheet of the bag-like portion is 1 to 10 mm in height and width. One surface is fixed to the sheet surface of the bag-shaped part by welding or adhesion, etc., or the upper surface of the bag-shaped part is fluffed with a raising machine. is used.
In addition, fibers are layered horizontally on waves of a predetermined height and three-dimensionally planted in a pile shape by adhesion or welding on a water-permeable fabric. It is preferable because it does not

The sludge water absorbing sandbag according to claim 4 of the present invention is the sludge water absorbing sandbag according to claim 1, in which at least one of a deodorant, a disinfectant, a neutralizer, and a radioactive substance adsorbent is mixed in the bag-shaped part. have a configuration.
With this configuration, in addition to the actions and effects obtained in claim 1, the following actions and effects are obtained.
(a) Since the deodorant is mixed in the water-absorbent resin, when the water-absorbent resin sandbag is taken out, the odor is deodorized.
(b) Since the water-absorbing resin contains a sterilizing agent, a neutralizing agent, and a radioactive substance adsorbent, it is excellent in safety.
Here, zeolite, Prussian blue, crystallized silicotitanate, synthetic zeolite, titanate, etc. are used as the radioactive substance adsorbent.

The sludge water absorption sandbag according to claim 5 of the present invention is the invention according to any one of claims 1 to 4, wherein at least one of the attachment part, the bag-like part, and the water-absorbing resin is a biodegradable material It has a configuration formed by
With this configuration, in addition to the actions and effects obtained by the invention described in any one of claims 1 to 4, the following actions and effects are obtained.
(a) Water-absorbing resin sandbags that absorb and stably retain sludge water can be buried as they are in a landfill or the like, and are excellent in workability.
Here, as biodegradable polymers, microorganisms, natural products, and chemically synthesized polymers are used.
Specifically, polylactic acid, poly(3-hydroxybutyrate-co-3-hydroxyhexanoate), polyglycolic acid, polybutylene succinate, polybutylene succinate adipate, polybutylene adipate terephthalate, polyethylene terephthalate succinate, etc. is held.
Among them, polylactic acid is preferably used because it is susceptible to biodegradation by microorganisms in soil and ultraviolet rays.

The sludge water absorption sandbag according to claim 6 of the present invention is the invention according to any one of claims 1, 3 to 5, wherein one or more locking holes are provided in at least one edge of the peripheral edge of the bag-shaped part It has a configuration with
With this configuration, in addition to the actions and effects obtained by the invention described in any one of claims 1, 3 to 5, the following actions and effects are obtained.
(a) A locking tool such as a rope is fastened to the locking hole, and a water-absorbent resin sandbag is thrown into the sludge water stagnant part to absorb the sludge water, and then the floor surface is cleaned while pulling out the locking tool. At the same time, it is possible to take out the water absorbent resin sandbag that has absorbed the sludge water.
(b) When water-absorbing resin sandbags with locking tools in locking holes are used to remove radioactive sludge, workers can operate and work from a place away from stagnant sludge, so radiation to the human body is minimized. Prevents damage such as exposure to radiation, and excels in workability and safety.
Here, one or more locking holes are formed in one edge.

Schematic partially broken plan view of the sludge water-absorbing sandbag of Embodiment 1 AA line cross-sectional schematic diagram of FIG. Schematic central cross-sectional view showing a state in which the sludge water-absorbing sandbag of Embodiment 1 absorbs and adsorbs sludge water. Schematic diagram showing a state in which the sludge water absorbing sandbag of Embodiment 1 is used in a house submerged by a flood.

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. It should be noted that the present invention is not limited to the embodiments.
(Embodiment 1)
FIG. 1 is a schematic plan view partially broken away of the sludge water-absorbing sandbag of Embodiment 1. FIG.
In FIG. 1, 1 is a sludge water absorption sandbag formed suitably for discharging sludge water accumulated under the floor of the house, 2 is an attachment part formed by raised vinylon fiber or loop pile flocking, 3 is on the surface The attachment part 2 is a bag-like part formed of a biodegradable polymer sheet such as polybutylene succinate that is sewn, partially glued or welded, and 4 is a water absorbent resin and a water flow aid. An inner package part enclosed in the bag-like part 3, 5 is a sealing part sealed by sewing or adhesion to prevent leakage of the water-absorbing resin and the water-permeable auxiliary agent inside the circumference of the bag-like part 3, 6 Reference numeral 7 denotes an edge portion formed on the outside of the sealing portion 5 of the bag-like portion 3, and 7 an engaging hole formed in the edge portion 6 for engaging an engaging tool 8 such as a rope or a hook.

FIG. 2 is a schematic cross-sectional view taken along line AA of FIG.
In FIG. 2, the attachment part 2 is made of raised vinylon fiber, polyester fiber, rayon fiber, polyolefin fiber, or polyester fiber with a pitch of several mm, and is formed of a loop pile with a pitch of about 1 to 10 mm. is formed with a length of several mm to 10 mm, is welded to a non-woven fabric made of polyolefin, and is fixed to the outer peripheral surface of the bag upper portion 3 by adhesion or the like. In the inner package part 4 of the bag-like part 3, a water-absorbing resin 4a of 99.5 vol% or less and a water-passing auxiliary material 4b of 0.7 vol% or more are adjusted so that the weight becomes about 30 kg when water is absorbed, and they are uniformly mixed and dispersed. and enclosed.

FIG. 3 is a schematic central cross-sectional view showing a state in which the sludge water absorbing sandbag of Embodiment 1 absorbs and adsorbs sludge water.
In FIG. 3, 9 is coarse-grained suspended matter such as coarse-grained sludge particles and suspended solids that are captured by the adhesion part 2 accompanying water when the water-absorbent resin 4a absorbs sludge water, and 10 is the water-absorbent resin. It is a fine suspension such as silt and fine organic matter in the sludge water that is absorbed and adsorbed by the water passage auxiliary material.

The method of using the water-absorbing resin sandbag of Embodiment 1 produced as described above will be described below with reference to the drawings.
FIG. 4 is a schematic diagram showing a state in which the sludge water-absorbing sandbag of Embodiment 1 is used in a flooded house.
In FIG. 4, 11 is a resident of a house affected by flooding under the floor, 12 is an underfloor inspection opening, and 13 is retained sludge water that has accumulated under the floor. The water absorbent resin sandbag 1a absorbs and adsorbs the stagnant sludge water and is gelled and swollen. The water-absorbing resin sandbag 1a is fastened to a locking hole 7 with a locking tool 8 such as a rope and thrown into a place where sludge water stays.
First, the resident 11 confirms the retained sludge water 13 through the underfloor inspection opening 12, fixes the locking tool 8 made of a rope to the locking hole 7 of the edge 6 of the water-absorbent resin sandbag 1, and then the underfloor inspection opening 12. The water absorbent resin sandbag 1 with the locking tool 8 is thrown into the retained sludge water 13 from the bottom. Since the water-absorbing resin 4a contained in the bag-like portion 3 of the thrown-in water-absorbing resin sandbag 1 is dispersedly mixed with the water passage auxiliary agent 4b, it absorbs sludge water with a strong water-absorbing power. Suspended sludge is also absorbed at the same time because of the strong absorption power when absorbing water, and the suspended coarse particles 9 are raised or flocked in a loop pile shape on the attached portion 2 on the surface of the bag-like portion 3. The fine suspension 10, which is entangled in the fiber group and composed of silt, fine organic matter, etc., passes between the fibers of the bag-like portion 3, etc., and penetrates into the water-absorbing resin layer. Since the water-absorbing resin 4a is mixed with a water-permeable auxiliary agent 4b, the fine suspension 10 composed of water, silt, fine organic matter, etc. is spread over the entire water-absorbing resin layer to gel and swell the entire layer in a short time. . Next, when the water-absorbent resin sandbag 1a that has been gelled and swollen as a whole is dragged in order to be taken out, the fiber group, etc. of the attachment part 2 on the lower surface of the water-absorbent resin sandbag 1a entangles the dirt on the floor surface and pulls it out accordingly. Since it comes down, the sludge water and sludge on the floor surface can be discharged at once.

The present invention can be placed on sludge or sludge accumulated in narrow places such as under the floor of a house, hazardous material storage, radioactive sludge, oxygen-deficient places, places where toxic gases such as hydrogen sulfide are generated, etc. It absorbs and retains fine suspended matter such as sewage, silt, organic sludge, etc. by simply dragging it out after absorbing and adsorbing , and coarse or fine-grained suspension of sludge water, sludge on the floor surface, silt, etc. Sludge water stagnated in a narrow space such as under the floor or on the floor surface of a hazardous material storage place can be removed by simply entangling and holding the object in the adhering part, and the workability of removing sludge water can be remarkably improved. Provide sandbags that can absorb sludge water.

1 Water-absorbent resin sandbag 1a Water-absorbent resin sandbag that has absorbed and adsorbed sludge water and has been gelled and swollen 2 Attachment part 3 Bag-like part 4 Inner package part 4a Water-absorbent resin 4b Water flow auxiliary agent 5 Sealing part 6 Edge part 7 Locking Hole 8 Locking Tool 9 Coarse Suspended Matter 10 Fine Suspended Matter 11 Resident 12 Underfloor Inspection Opening 13 Retained Sludge Water

Claims (6)

A bag-shaped portion formed of a polymer sheet, the one surface of which is formed by bending a fibrous material having capillary water absorption and adsorption action vertically with respect to the sheet surface and forming a wave shape with a pitch of 1 to 10 mm. a water-permeable bag-shaped portion formed on the outer peripheral surface thereof, and a water-absorbent resin housed in the bag-shaped portion. Sludge water absorption sandbag characterized by 2. The sludge water absorbing sandbag according to claim 1, wherein a water passage auxiliary material is dispersedly mixed in said water absorbent resin. The sludge water absorbing sandbag according to claim 1, wherein the attachment part is formed of one or more of nonwoven fabrics of vegetable fibers, chemical fibers, and inorganic fibers. 2. The sludge water absorbing sandbag according to claim 1, wherein at least one of a deodorant, a disinfectant, a neutralizer, and a radioactive material adsorbent is mixed in the water absorbent resin. The sludge water absorbing sandbag according to any one of claims 1 to 4, wherein at least one of the attachment portion, the bag-like portion, and the water-absorbent resin is made of a biodegradable material. 6. The sludge water absorbing sandbag according to any one of claims 1 to 5, wherein at least one edge of the peripheral edge of said bag-like portion is provided with one or more holes.

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