JP2005334812A - System for cleaning and/or improving water quality in closed water area - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system capable of reducing expense required to dispose and arrange the system by a simple system configuration, and also effectively cleaning and/or improving a water quality in a closed water area in the system for cleaning and/or improving the water quality in the closed water area without requiring to include a water flow generation means, without depending on artificial energy supply from the outside and utilizing natural energy. <P>SOLUTION: According to the system for cleaning and/or improving the water quality in the closed water area, a contact member formed of a honeycomb structure having a plurality of water passing holes each facing in the same direction in parallel is placed so as to vertically set a direction to which the plurality of water passing holes are oriented at a height position in a predetermined vertical direction between a water surface and a water bottom. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a system for purifying and / or improving water quality in closed water areas such as reservoirs, ponds, moats, swamps, lakes, water tanks, and the like, and in particular, when a water flow contacts a contact member disposed in water. The present invention also relates to a system that purifies and / or improves the quality of water in a closed water area by adsorbing suspended substances and organic substances by microorganisms attached to the surface of the contact member and decomposing them.

  When the water flow comes into contact with the contact member disposed in the water, microorganisms attached to the surface of the contact member adsorb suspended solids and organic substances and decompose them, thereby purifying and / or water quality in the closed water area. Or various proposals have been made for improved systems.

  For example, Japanese Patent Laid-Open No. 2003-236574 discloses polluted water between a water flow promoting device for generating a water flow in a closed water area, and a closed water area for removing contaminants and eutrophic substances in the closed water area. A water purification system for closed water areas equipped with a purification facility for circulation has been proposed. The purification equipment of this system is filled with contact material, fibrous filter material and phosphorus adsorbent.

  Japanese Patent Laid-Open No. 2001-62478 also hangs a microbial carrier to which microorganisms that decompose organic matter adhere by a floating body and a weight so that the microbial carrier can be swung in water. The organic matter contained in the microorganisms is decomposed by the microorganisms, and the microorganisms adhering to the microorganism carrier and their dead bodies are appropriately shaken off by the rocking, so that the distribution of microorganisms suitable for organic matter decomposition Water purification units such as lakes and water purification devices and water purification devices have been proposed.

Furthermore, in Japanese Patent Laid-Open No. 9-141280, a large number of elongated contact materials are hung inside a net container formed in a mosquito net shape, a float is arranged on the upper part of the net container, and the upper part of the net container is covered with a light shielding sheet. A water quality purification device for a water area such as a river has been proposed in which the bottom of the net container is fixed to the bottom surface of the water area and a float is attached to the top.
JP 2003-236574 A Japanese Patent Laid-Open No. 2001-62478 Japanese Patent Laid-Open No. 9-141280

  In the invention of the above-mentioned JP-A-2003-236574, a water flow promoting device for generating a water flow in a horizontal direction in a closed water area is essential, and therefore, a large amount of cost is required for system deployment, operation, and maintenance. I didn't get it.

  In addition, in the invention described in Japanese Patent Laid-Open No. 2001-62478, the water flow generating means sprays the microorganism supporting body constituted by attaching a large number of thin threads in a ring to a plastic string-like body. A water stream flowing in the horizontal direction was sprayed, and thus the microorganisms took in and decomposed organic matter contained in the water by hitting the microorganism carrier to which the microorganisms adhered. For this reason, water flow generating means for flowing water in the horizontal direction is essential, and much cost has to be spent on system deployment, operation and maintenance.

  The invention described in Japanese Patent Application Laid-Open No. 9-141280 is premised on installation in a river or the like where water flows in a horizontal direction, and is used in a closed water area where a horizontal water flow does not occur. Was not suitable.

  In view of the above-described problems of the prior art, the present invention does not require a water flow promoting device, a water flow generating means, or the like, that is, does not depend on an artificial energy supply from the outside, and is a closed water area using natural energy. The water purification and / or improvement system of the present invention can reduce the cost required for the installation and installation of the system with a simple system configuration, and effectively purifies and / or improves the water quality of the closed water area. The purpose is to propose a system that can.

  In order to achieve the above-mentioned object, the water purification and / or improvement system for a closed water area proposed by the present invention has a contact member in which a plurality of water passage holes each directed in the same direction are arranged in parallel. A predetermined height position between the water surface and the bottom of the water is arranged such that a direction in which the plurality of water holes are directed is a vertical direction (that is, a vertical direction). .

  Here, the predetermined vertical height position between the water surface and the bottom of the closed water area in which the contact members in which a plurality of water flow holes directed in the same direction are arranged in parallel is arranged in the daytime. Due to temperature changes during the night (that is, during the day when the sun is shining or during the night when the sun is not shining, the temperature change between the water surface (upper side) and the bottom of the water (lower side) Due to temperature changes between night and night) and the effects of wind blowing on the surface of the water, resulting in water stored in closed waters such as reservoirs, ponds, moats, swamps, lakes, water tanks, etc. A gentle vertical circulation flow between the water surface side (upper side) and the water bottom side (lower side) is directed to a plurality of passages in the vertical direction (vertical direction), which are the same direction, arranged in parallel with the contact member. The height in the vertical direction that allows passage through the water hole Is that of.

  That is, according to the water purification and / or improvement system of the present invention described above, it is not necessary to provide a water flow promoting device, a water flow generating means, or the like. In other words, without relying on an artificial human energy supply from outside, using natural energy such as temperature change between daytime and nighttime or wind blowing on the surface of the water, By passing the water flow through the plurality of water holes in the contact members arranged in parallel so as to be directed in the vertical direction and bringing the water flow into contact with the contact members, It is possible to adsorb floating substances and organic substances in the water and decompose them to purify and / or improve the water quality of the closed water area.

  Therefore, the water purification and / or improvement system for closed water areas proposed by the present invention can reduce the cost required for deployment and installation, and can effectively purify and / or improve water quality in closed water areas. Can be planned.

  In the water purification and / or improvement system for a closed water area according to the present invention described above, the contact member is formed by a floating body and a weight at a predetermined vertical height position between the water surface and the bottom of the closed water area. It can arrange | position in the water of a closed water area so that the direction which a water flow hole heads becomes an up-down direction.

  In this way, since the contact member can be disposed in the water using buoyancy, the construction cost for installing the water purification and / or improvement system for the closed water area proposed by the present invention is further reduced. be able to.

  In addition, the length of the vertical direction (vertical direction) of the plurality of water holes of the contact member is 5 cm to 100 cm, and the position of the upper end side opening of the plurality of water holes is 5 cm below the surface of the closed water area. It is desirable to arrange it at ˜50 cm.

  If the position where the contact member is placed becomes too shallow under the water surface, or conversely too deep, due to the influence of temperature change between daytime and nighttime or wind blowing on the water surface, The gentle vertical circulation flow between the water surface side (upper side) and the water bottom side (lower side) that occurs in the water of the closed water area is in a plurality of water passage holes that are arranged in parallel with the contact member and are directed in the vertical direction. It becomes difficult to pass.

  According to the experiments of the present inventor, in a closed water area such as a reservoir hit by the sun during the daytime, due to the influence of temperature change between daytime and nighttime or wind blowing on the water surface, The gentle vertical circulation flow between the water surface side (upper side) and the water bottom side (lower side) generated in water is easily arranged in parallel with the contact member and passes through a plurality of water flow holes directed in the vertical direction. The effective range is that the vertical length of the water passage hole provided in the contact member is 5 cm to 100 cm, and the position of the upper end side opening of the water passage hole provided in the contact member is closed. It was desirable to arrange it so as to be located 5 cm to 50 cm below the surface of the water area.

  This range is the temperature change between daytime and nighttime, that is, the temperature between the water surface (upper side) and the bottom of the water (lower side) during the day when the sun is hit or at night when the sun is not hit. The water side (upper side) and the bottom side (lower side) generated in water stored in closed water areas due to changes, temperature changes between daytime and nighttime, and wind blowing on the water surface ) Is allowed to pass through the water passage hole arranged in parallel to the contact member and directed in the vertical direction (toward the vertical direction) to prevent microorganisms and the like adhering to the surface of the contact member from It is effective for adsorbing organic substances and decomposing them to purify and / or improve water quality in closed water areas.

  In addition, in order to perform such a water flow smoothly, the length in the vertical direction (vertical direction) of the contact member is also made equal to the length in the vertical direction (5 cm to 100 cm) of the water passage hole provided in the contact member. It is desirable to keep it.

  On the other hand, the area occupied by the contact member in the water surface of the closed water area in a plan view is such that the portion where the contact member is arranged is part or all of the water surface of the closed water area in the water surface of the closed water area. Preferably, a plurality of contact members arranged in parallel so that the water flow holes having the length in the vertical direction (5 cm to 100 cm) are directed in the vertical direction are the depths (in the contact members). When the position of the upper end side opening of the arranged water passage hole is arranged at a depth of 5 cm to 50 cm below the water surface), each area of the plurality of water passage holes and the length in the vertical direction thereof, Combined with the vertical length of the contact member, which is equivalent to the vertical length of the water passage hole, it is possible to prevent sunlight incident on the water surface of the closed water area from reaching the bottom of the closed water area, Across the widest possible area of the bottom of a closed water area Te, sunlight that is incident on the water surface of the closed water area is to occupy an area enough to become unreachable can be arranged contact members.

  If sunlight incident on the surface of the closed water area can be prevented from reaching the bottom of the closed water area, it is possible to suppress the growth of algae on the bottom of the closed water area. Therefore, in a closed water area such as a reservoir, which is a characteristic effect of the present invention, the water in the closed water area is affected by the temperature change between daytime and nighttime or the wind blowing on the water surface. The gentle vertical circulation flow between the water surface side (upper side) and the water bottom side (lower side), which is arranged in parallel with the contact member and easily passes through the plurality of water passage holes directed in the vertical direction, is brought into contact. In addition to the fact that suspended substances and organic substances are adsorbed by microorganisms and the like adhering to the surface of the member and decomposed, it becomes possible to effectively purify and / or improve the water quality of closed water areas, in summer etc. It is effective in preventing the algae from abnormally breeding at the bottom of the closed water area and causing the water in the closed water area to fall into an oxygen deficient state.

  In the water purification and / or improvement system for a closed water area according to the present invention described above, the contact member in which a plurality of water passage holes each in the same direction (vertical direction = vertical direction) are arranged in parallel is a honeycomb structure. be able to.

  At present, honeycomb structures having a hexagonal cross-sectional honeycomb structure as a basic form are not limited to hexagonal cross-sections, but are collectively referred to as aggregates having the same cross-sectional shape. For example, unlike a microorganism-supporting body configured by attaching a large number of thin threads in a ring to a plastic string-like body as described in JP-A No. 2001-62478, the daytime and nighttime Slow vertical circulation between the water surface (upper side) and the bottom of the water (lower side) that occurs in water stored in a closed water area due to temperature changes between the two and the wind blowing on the water surface A plurality of flows are arranged in parallel in the honeycomb structure, and can easily pass through the water passage holes facing the same direction (vertical direction = vertical direction).

  And since the honeycomb structure has a very large surface area in the unit volume, it is advantageous in that water can be efficiently purified and improved by attaching more microorganisms to the surface.

  Furthermore, since the honeycomb structure has a high porosity and a low weight per volume, it is easy to handle. Therefore, even when the honeycomb structure is disposed at a predetermined depth in the water using a floating body and a weight over a wide area of the closed water area, the work can be performed efficiently and easily. become. Thereby, the cost required to deploy and install the water purification and / or improvement system for the closed water area of the present invention can be further suppressed.

  According to the present invention, it is not necessary to provide a water flow promoting device, water flow generating means, or the like, that is, a water purification and / or improvement system for a closed water area using natural energy, which does not depend on an artificial human energy supply from the outside. Thus, the cost required for system deployment and installation can be reduced with a simple system configuration, and water quality purification and / or improvement of a closed water area can be effectively achieved.

  According to the system of the present invention, the contact member in which a plurality of water passage holes that are directed in the same direction are arranged in parallel is arranged at a predetermined vertical position between the water surface and the bottom of the closed water area. In this case, since the contact member can be disposed in the water of the closed water area using the floating body and the weight, the system can be easily installed and installed with simple equipment at low cost.

  In particular, by forming the contact member with a honeycomb structure, it occurs in the water stored in the closed water area due to the influence of temperature change between the daytime and nighttime or the wind blowing on the water surface, A plurality of gentle vertical circulation flows between the water surface side (upper side) and the water bottom side (lower side) are arranged in parallel in the same direction (vertical direction = vertical direction) provided in the honeycomb structure. It can easily pass through the water passage hole. In addition, by using a honeycomb structure having a feature that the surface area occupying a unit volume is very large, it is possible to efficiently purify and improve water quality by attaching more microorganisms to the surface.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a side view illustrating a state where the water purification and / or improvement system 1 for a closed water area according to the present invention is provided in a reservoir 2 (water depth D2: 1.2 m) which is a closed water area.

  In the water purification and / or improvement system 1 in the closed water area, the contact member 10 made of a honeycomb structure is formed between the water surface 3 and the water bottom 4 in the water of the reservoir 2 by the floats 6a and 6b and the weight 5. A plurality of water passage holes 11a, 11b, 11c, 12a, 12b, 12c, 13a, 13b, and 13c (FIG. 2B) that are arranged in parallel with the contact member 10 at the vertical height position of 3 (b)) is arranged so as to be directed in the vertical direction (vertical direction = vertical direction in FIG. 1).

  In the embodiment of FIG. 1, the contact member 10 whose vertical direction (vertical direction) length L is 20 cm (the vertical length of the water holes 11 a to 11 b is also 20 cm) is the upper end side of the water holes 11 a to 11 b. It arrange | positions in the water of the reservoir 2 by the float 6a, 6b and the weight 5 so that it may become the water depth D1 = 20cm of opening.

  As shown in FIGS. 4A and 4B, the contact member 10 made of a honeycomb structure is made of hard vinyl chloride and has a hexagonal cell size R (FIG. 4B) of 20 mm. .

  Underwater in the reservoir 2 is moderately moved between the water surface 3 side (upper side) and the water bottom 4 side (lower side) due to the temperature change between daytime and nighttime and the wind blowing on the water surface 3. A vertical circulatory flow is generated as indicated by arrows 7a and 8a. Due to the vertical circulation flow of the water in the reservoir 2, a water flow in the direction as indicated by an arrow 9 is generated in the water passage hole of the contact member 10 made of the honeycomb structure, for example.

  When such a water flow comes into contact with the contact member 10, microorganisms or the like attached to the surface of the contact member 10 adsorb floating substances and organic substances in the water in the reservoir 2, and decompose these to improve the water quality of the reservoir 2. Purified and / or improved.

  FIGS. 5A and 5B show a contact member 20 made of another honeycomb structure. 5 (a) and 5 (b) is made of a hard vinyl chloride corrugated open honeycomb structure, and the contact member is made of the honeycomb structure shown in FIGS. 4 (a) and 4 (b). Since the surface area per unit volume is larger than 10 and the adhesion of microorganisms is accelerated, more excellent water purification and improvement effects can be exhibited.

  2 shows a single unit represented by reference numeral 21a by attaching a pipe to the side wall of the contact member represented by reference numeral 10 in FIG. 1, and a plurality of units 21a, 21b, 21c, 21d configured as described above. 21e is connected to the rope 22 to explain the case where it is installed in the reservoir 2 which is a large-area closed water area.

  Since the basic operation is the same as that of the embodiment described with reference to FIG. 1, portions common to the embodiment shown in FIG.

  FIG. 3 illustrates a process of installing a plurality of units 21a, 21b, 21c, 21d, and 21e in the reservoir 2 that is a large-area closed water area. The size of each unit 21a, 21b, 21c, 21d, 21e (vertical and horizontal sizes in FIG. 3 shown in a plan view) is variously set according to the size of the reservoir 2, such as 2 m × 3 m. can do. At first, with no weight 5 attached, a plurality of units 21a, 21b, 21c, 21d, 21e are introduced into the reservoir 2 from the periphery of the reservoir 2 as shown by arrows in FIG. Attaches the weight 5 in water and adjusts the depth in the vertical direction (vertical direction).

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such embodiments, and various forms are possible within the technical scope grasped from the description of the scope of claims. It can be changed.

The side view explaining the state by which the water purification and / or improvement system of the closed water area of this invention is deployed in the closed water area. The side view explaining the state by which the water purification and / or improvement system of the closed water area of the present invention which consists of a plurality of units is arranged in the reservoir which is a closed water area of a large area. The top view explaining the process of providing the water purification and / or improvement system of the closed water area of this invention which consists of a plurality of units in the reservoir which is a large area closed water area. (A) The perspective view showing a part of contact member consisting of a honeycomb structure, (b) The top view showing a part of contact member consisting of the honeycomb structure of Fig.4 (a) illustration. (A) The perspective view showing a part of other contact member consisting of a honeycomb structure, (b) The top view showing a part of contact member consisting of the honeycomb structure of Fig.5 (a) illustration.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water purification and / or improvement system of closed water area 2 Reservoir 3 Water surface 4 Water bottom 5 Weight 6a, 6b Float 10 Contact member 11a, 11b, 11c, 12a, 12b, 12c, 13a, 13b, 13c Water hole 20 Contact member

Claims (4)

  A contact member in which a plurality of water holes that are directed in the same direction are arranged in parallel is a predetermined height position between the water surface and the water bottom in the closed water area, and the direction of the plurality of water holes is directed to The water purification and / or improvement system for a closed water area, wherein the water is arranged in a vertical direction.   The contact member is formed in a closed water area by a floating body and a weight so that a direction toward the plurality of water holes is a vertical direction at a predetermined vertical height position between the water surface and the bottom of the closed water area. The water purification and / or improvement system for closed water areas according to claim 1, wherein the system is disposed in water.   The length of the plurality of water passage holes in the vertical direction of the contact member is 5 cm to 100 cm, and the contact member is located such that the position of the upper end side opening of the plurality of water passage holes is 5 cm to 50 cm below the water surface of the closed water area. The water purification and / or improvement system for closed water areas according to claim 1 or 2, wherein   4. The water purification and / or closed water area according to any one of claims 1 to 3, wherein the contact member in which a plurality of water passage holes each arranged in the same direction are arranged in parallel is a honeycomb structure. Or an improvement system.

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