JP2013017978A - Water quality improving implement and method for improving water quality - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water quality improving implement effectively improving the water quality of a water tank, tank, water reservoir, fishery farms and the like, and a method for improving water quality using the same.SOLUTION: The water quality improving implement includes a porous container having a plurality of communication holes communicating with inside and outside and capable of filling and holding zeolite particles thereinside, and a float connected to the upper part of the porous container through a connector, and is constituted so that a part of the float is above the water surface when the porous container filled with the zeolite particles thereinside is sunk in the water and that the porous container is held in a state of floating in the water. By floating the water quality improving implement inside the water reservoir, tank and the like reserving water containing hazardous material such as impurities, radioactive substances and the like, the hazardous substance contained in the water is adsorbed by the zeolite inside the porous container and is removed.

Description

  The present invention relates to a water quality improvement tool suitable for use in improving the water quality of water tanks, reservoirs, fish farms, reactor cooling water tanks, and the like, and a water quality improvement method using the same.

  As a method for improving the water quality of water tanks, tanks, reservoirs, fish farms, etc., the method that has been most widely adopted conventionally is a method of filtering water while forcibly circulating it with a pump. This method is suitable for removing algae and foreign matters floating in the water, but cannot remove harmful substances such as impurities dissolved in the water. In order to improve this, a method of adsorbing and removing harmful substances by bringing water into contact with activated carbon or natural zeolite has been developed (see Patent Document 1 and Patent Document 2).

  The conventional method of adsorbing and removing harmful substances contained in water using activated carbon or zeolite is superior in that it can effectively remove harmful substances dissolved in water, but the stored water can be used as zeolite or the like. Could not be contacted efficiently. The one described in Patent Document 1 is one in which a zeolite or the like placed in a porous container is put into a river or the like and adsorbs and removes harmful substances while rolling in a water stream. It is thought that only a part can be processed.

JP2003-340482

JP 2000-197890 A

  Moreover, since the thing of patent document 2 requires the apparatus and power for circulating water, there exists a problem that cost becomes high. In addition to these methods, attempts have been made to put a block of natural zeolite at the bottom of the reservoir, but this method improves the water quality of the entire reservoir, although the water in contact with the zeolite is purified. I can't.

  Therefore, the present invention provides a water quality improvement tool capable of effectively improving the water quality of a water tank, tank, reservoir, seafood farm, etc. with a relatively simple structure, and a water quality improvement method using the same. It is an issue.

  In order to solve the above problems, the present invention employs the following configuration. That is, the water quality improvement tool according to the present invention described in claim 1 has a plurality of through holes communicating inside and outside, a porous container capable of filling and holding zeolite particles therein, and the porous container A float connected to the upper part via a connector, and when the porous container filled with zeolite particles is submerged in water, a part of the float is on the water surface, and the porous container is It is configured to be held in a floating state in water.

  Moreover, the water quality improvement tool of Claim 2 is provided with the elongate slit as a through-hole in the outer peripheral part of a porous container. The water quality improvement tool according to claim 3 is such that the porous container is composed of a knitting kit.

  Furthermore, the water quality improvement tool according to claim 4 is provided with an opening at the bottom of the porous container that can discharge the internal particles as necessary, and an openable / closable lid that covers the opening. It is what has been. The water quality improvement tool according to claim 5 is characterized in that a weight connected by a flexible string is provided on the lower side of the porous container.

  Next, the water quality improvement method according to claim 6 is characterized in that the water quality improvement tool according to any one of claims 1 to 5 is provided in a reservoir, a tank or the like that stores water containing impurities, radioactive substances or other harmful substances. It is characterized by removing harmful substances contained in water by adsorbing them to the zeolite in the porous container by floating them.

  This water quality improvement tool is used by filling a porous container with zeolite particles and putting it in water. However, due to the floating buoyancy, the porous container floats while being immersed in water. Since the float is connected to the upper part of the porous container with a connector, the upper part of the float is floated on the water surface, and the porous container filled with zeolite is suspended in water by its weight.

  When the water containing harmful substances contacts the zeolite filled in the porous container, dissolved impurities and harmful substances are adsorbed and removed. The porous container of this water quality improvement tool floats on the surface of the water, so it floats even if there is a slight water flow or wind. Is done.

  If the length of the connector can be adjusted, the depth of the porous container containing the zeolite can be arbitrarily adjusted, which is effective. It is extremely effective to arrange multiple water quality improvement tools with different floating depths. In addition, as a connection tool, what is necessary is just to use the elongate pipe and stick | rod made with the plastics and metal which have a certain amount of rigidity, but depending on the case, a flexible string-like thing can also be used as a connection tool.

  Any porous container may be used as long as it has a large number of through holes communicating with the inside and outside. The shape and dimensions of the through-holes may be any as long as water can flow freely without a large amount of internal particles flowing out. This porous container is practically a cylindrical body formed with a large number of slits as described in claim 2, and made of netting as described in claim 3, but is not limited thereto. For example, a cylinder having a large number of circular or square holes can be used.

  Further, as described in claim 4, if an opening that can be opened and closed is provided at the bottom of the porous container and the opening is normally closed with a lid so that the contents do not spill, the opening can be made as necessary. It is convenient because the particles inside can be released to the outside and the particles can be easily exchanged or released into water. Further, as in the invention described in claim 5, if the weight is connected to the lower side of the porous container via a flexible string, the effect of the anchor can be obtained by sinking the weight to the bottom of the water, The floating range of the porous container can be limited to a predetermined range.

  Next, according to the water quality improvement method of claim 6, since it is possible to effectively contact the zeolite adsorbing harmful substances such as impurities, water containing the harmful substances can be effectively purified. In addition to various impurities that dissolve in water, harmful substances are also effective against radioactive substances. For example, it is possible to effectively adsorb and remove radioactive substances dissolved in water in a recovery tank containing water in which radioactive substances such as cesium are dissolved, which is also suitable for improving the quality of reactor cooling water. .

It is an external view showing the embodiment of the present invention. It is explanatory drawing of the usage method. It is explanatory drawing of embodiment different from the above. Furthermore, it is explanatory drawing of different embodiment. It is explanatory drawing of embodiment which controls a floating range. It is embodiment which provided the opening-and-closing type opening in the porous container, (a) is a front view, (b) is a bottom view.

  Hereinafter, preferred embodiments of the present invention will be specifically described. FIG. 1 illustrates a water quality improvement tool of the present invention. This water quality improvement tool 1 includes a porous container 2 and a float 3.

  In the illustrated example of FIG. 1, the porous container 2 is formed as a mesh basket formed by forming a metal mesh (or a plastic mesh) 4 into a cylindrical shape. An opening is formed at the bottom of the porous container 2 and a bottom lid 6 is attached. A cap 7 is attached to the upper end portion of the porous container 2. The bottom lid 6 and the cap 7 are made of a material having an appropriate strength such as metal, plastic, and wood.

  A rod-like or pipe-like connector 9 is attached to the cap 7 of the porous container 2, and a float 3 made of a hollow molded body is attached to the upper end of the connector 9. In the illustrated example of FIG. 1, the connecting tool 9 is formed as a screw rod, and its extension length is adjusted by screwing the screw part 9 a into the screw hole 7 a provided in the cap 7 of the porous container 2. Installed as possible. Thus, if the space | interval of the float 3 and the porous container 2 can be adjusted, the porous container 2 can be sunk to arbitrary depth by adjusting this space | interval to a preferable value, and water quality improvement object water depth Is preferable because it can be widened. The method for making it possible to adjust the effective length of the connector 9 (the distance between the float 3 and the porous container 2) is not limited to the above screw type, and other appropriate methods can be employed. In some cases, the connector 9 may be fixed to the cap.

  The float 3 may be anything that can hold the porous container filled with the zeolite particles 5 so as to float in a submerged state, and a hollow body made of plastic, glass, metal or the like is adopted as the float 3. be able to. In the illustrated example, the float 3 is formed in the shape of a fish, but other suitable shapes such as aquatic plants and ships can be used. It goes without saying that it may be a simple hollow sphere. In some cases, the porous container 2 may be held in a state where the entire float 3 is submerged. Even in this way, the porous container 2 can be suspended in water.

  FIG. 2 shows how to use the water quality improvement tool 1, and the water quality improvement tool 1 in the illustrated example is used for water purification of the water tank 10. The inside of the porous container 2 is filled with zeolite particles 5.

  The zeolite particles 5 have an appropriate particle size range. For example, particles having an outer diameter of +1 mm, +5 mm, +10 mm, and +20 mm mixed at an appropriate ratio are preferable. If the particle size is too large, the specific surface area is reduced, so that the adsorption efficiency is deteriorated. On the other hand, if it is too fine, the filling amount (weight) decreases and the life tends to be shortened.

  The pores (gap) d of the porous container 2 should be fine enough to prevent fine particles filled therein from leaking out, but should be set so as not to hinder the flow of water. Fine particles leak out through the gap d of the porous container 2, but when these particles are natural zeolite, it is expected that the fish will not be harmful even if eaten, but rather promote health. .

  This water quality improvement tool 1 floats freely in the stored water if there is a water flow. In the illustrated aquarium, the fish is swimming, so that it can be floated by the water flow caused by the movement of the fish without applying special power. Due to this floating, the zeolite in the porous container 2 always comes into contact with new water, so that most of the stored water can be purified. In this case, as shown in FIG. 2, if a plurality of water quality improving tools having different depths of the porous container 2 (lengths of rod-like connecting tools) are used in combination, a wide range of water can be obtained without circulatory water circulation. The level of water can be purified.

  Next, FIG. 3 shows an embodiment slightly different from the above, and this water quality improvement tool 1 (B) is a cylinder in which the porous container 2 is formed of an appropriate material such as plastic, and its outer periphery. A large number of circular through holes h are formed in the part. The through-hole h is also sized so that the inner zeolite particles do not leak and the water can be effectively circulated in and out.

  FIG. 4 shows a further different embodiment. In this embodiment, the through hole of the porous container 2 is formed as an elongated slit s. Square or circular through holes h,... Are provided at the boundary between the upper and lower slit groups. The width of the slit s is also large enough to prevent particles from leaking out. In this embodiment, the upper part of the float 3 is formed in the shape of aquatic plants floating on the water surface. When such a design is applied to the float 3, there is an advantage that it is less likely to be an obstruction when used in a reservoir or the like.

  Fig. 5 illustrates a large water quality improvement tool suitable for use in fish farms and reservoirs such as prawns. The bottom of this water quality improvement tool 1 (C) is the bottom of the reservoir. The sinking weight (anchor) 20 is connected by a flexible string (rope, chain, etc.) 21. The length of the string body 21 is such a length that the porous container 2 can freely move horizontally within a predetermined range. By doing so, it is possible to prevent the problem that the water quality improvement tool is pressed against the corners or sides of the reservoir or the aquaculture pond under the action of wind power or water flow in a certain direction, and effective purification cannot be performed. . Moreover, there is also an advantage that it is possible to purify the entire reservoir, etc., evenly by placing a plurality of water quality improvement tools 1,.

  The zeolite in the present invention is intended for general zeolite. That is, natural zeolite or artificial synthetic zeolite may be used. In short, any substance capable of adsorbing and removing a desired harmful substance may be used. Of these, natural zeolite is preferred. Natural zeolite is used for adsorption of harmful substances and is not chemically synthesized due to its characteristics such as being porous and excellent in substance adsorbing ability and cation exchange ability. So there is no risk of harming the environment. There are a plurality of types of Tennobu zeolite, but for the use of the present invention, a high-purity zeolite in a molar form is preferred.

  In the above-described applications, zeolite that has been used for a long time is saturated with adsorption capacity, and it is difficult to perform effective purification. In such a case, the zeolite in the porous container 2 may be replaced with a new one. In this case, it is effective that the zeolite used for a long time is submerged in the bottom of a reservoir or the like. In this way, further purification of the water bottom can be expected.

  FIG. 6 represents an embodiment that facilitates the discharge of the spent zeolite. In this embodiment, an opening 30 is provided at the bottom of the porous container 2 and a lid 31 for opening and closing the opening is provided. The bottom of the container 2 can be opened and closed as necessary. In the illustrated example, the lid 31 is composed of two substantially semicircular members 32 and 32 attached to each other by a hinge 33 so as to be rotatable up and down. A cutout 32a is formed in each of the two lid members 32, 32, and an elongated hole 34 is formed in the center of the lid when the lid is open.

  On the other hand, the rod-like connector 9 that connects the float 3 to the porous container 2 is formed to a length that reaches the bottom of the container 2, and a hook 35 is attached to the lower end thereof. The hook 35 has a shape that fits into the elongated hole 34 of the lid members 32, 32, and can be projected to the lower side of the lid 31 through the elongated hole 34.

  The hook 35 protruding downward from the lid 31 is rotated by an appropriate angle (for example, about 90 degrees) around the axis of the rod-like connector 9, so that the hook 35 intersects the elongated hole 34. As a result of being unable to pass through the hole, the lid 31 is held closed by the hook.

  When the rod-like connector 9 is rotated from this state and the hook 35 is returned to the position along the elongated hole 34, the hook 35 can pass through the elongated hole 34, so that the cover members 32 and 32 rotate downward due to gravity. The bottom of the porous container 2 is opened. Thereby, the internal zeolite particles are dropped and released by gravity. Thus, it is practically convenient if the bottom of the porous container 2 is released by the operation of the float 3.

  The structure of the openable lid and the mechanism for opening and closing the lid are not limited to the above embodiment, and various structures can be adopted. For example, in the above embodiment, the lid is opened and closed by rotating the rod-shaped connector 9 around the axis, but by pulling or pressing the rod-shaped connector 9 against the porous container 2, The lid may be opened and closed. In some cases, such an opening / closing operation mechanism using the rod-like connector 9 may not be adopted, and for example, the lid may be screwed to the porous container body with a screw.

DESCRIPTION OF SYMBOLS 1 Water quality improvement tool 2 Porous container 3 Floating 4 Net 5 Zeolite 6 Bottom cover 7 Cap 9 Connection tool 30 Opening 31 Cover

Claims (6)

A porous container having a plurality of through holes communicating inside and outside and capable of filling and holding zeolite particles therein, and a float connected to the upper part of the porous container via a connector, When the porous container filled with zeolite particles is submerged in water, a part of the float is on the water surface and is configured to hold the porous container in a floating state in water. Water quality improvement tool. 2. The water quality improvement tool according to claim 1, wherein the through hole of the porous container is a plurality of elongated slits. The water quality improvement tool according to claim 1 or 2, wherein the porous container is composed of a net cage. The water quality improvement according to any one of claims 1 to 3, wherein an opening capable of releasing internal particles as necessary is provided at the bottom of the porous container, and an openable / closable lid for covering the opening is provided. Ingredients. 5. The water quality improvement tool according to claim 1, wherein a weight connected by a flexible string is provided below the porous container. Putting the water quality improvement device according to any one of claims 1 to 5 inside a reservoir or tank that stores water containing harmful substances such as impurities and radioactive substances, and suspending the substances in the water A method for improving water quality, comprising adsorbing and removing zeolite on a porous container.

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