JP2006102701A - Apparatus for cleaning water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for cleaning water, the construction cost or maintenance cost of which can be reduced. <P>SOLUTION: This apparatus for cleaning water is constituted so that water is cleaned by using a water activating agent constituted of a gravelly material obtained from a mixture of porous lapillus, which is oxidized/sterilized to improve the adsorption property and air dissolving efficiency thereof and is made suitable as the culture medium of a microbe, with black earth and/or a powdery material obtained by powdering a clay-like material. The apparatus for cleaning water is provided with: a first stage tank for continuously receiving the water to be treated from the upstream side and storing a predetermined amount of the water to be treated; a second stage tank for continuously receiving the water which is to be treated and is discharged from the first stage tank and storing a predetermined amount of the water to be treated; and a communicative port for making the water to be treated in the first stage tank communicate with the water to be treated in the second stage tank. The water activating agent is brought into contact with the water to be treated in both of the first stage tank and the second stage tank. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a water purification apparatus, and more particularly to a water purification apparatus that has a simple structure and can reduce the cost required for construction and maintenance.

  Various human activities generate industrial wastewater and domestic wastewater. These treatments require a large investment in the construction of sewers and water purification equipment, and a large cost in operation and maintenance. Various water purification devices have been researched and developed in order to reduce the cost required for the construction and maintenance of this water purification device (see, for example, Patent Document 1). However, a large-scale construction work or a complicated structure is required. As such, such costs are still not satisfactory.

On the other hand, the inventor of the present application filed a patent application entitled “Water quality activator and its production method” on September 27, 1993, which was filed in 1999. On March 26, it was patented as Patent No. 2903359 (hereinafter referred to as “previous patent publication”, hereinafter referred to as “previous patent”) (see Patent Document 2).
The previous patent states that “pebbles and / or clay obtained from a mixture of porous volcanic gravel and black soil that is sterilized by oxidation treatment to improve adsorption and air dissolution efficiency and suitable for microbial media. The water quality activator comprising a powdered product obtained by pulverizing the form "(Claim 1 in the previous patent publication). The water quality activator is" tap water, water tank, pool, river, pond, lake " In addition, domestic wastewater and industrial wastewater can be efficiently purified at a very low cost ”(paragraph number 0038 in the previous patent publication).

Japanese Patent Laying-Open No. 2004-181362 (for example, claim 1) Japanese Patent No. 2903359

  However, according to the previous patent, “pebbles obtained from a mixture of porous volcanic gravel and black soil sterilized by oxidation treatment, improving adsorption and air dissolution efficiency, and suitable for a microbial medium, and Alternatively, a water purification device for performing water purification with high efficiency using a water quality activator made of powdered clay-like material (hereinafter referred to as “activator”) has not been established so far. .

  Therefore, an object of the present invention is to provide a water purification device that can perform water purification with high efficiency using this activator, thereby reducing the cost required for construction and maintenance of the water purification device.

  The water purification apparatus of the present invention (hereinafter referred to as “the present apparatus”) is sterilized by oxidation treatment to improve the adsorptivity and air dissolution efficiency, and is suitable for a porous volcanic gravel and black soil suitable for a microbial medium. Water purification apparatus using a water quality activator comprising a gravel-like material obtained from a mixture with the above and / or a powdered material obtained by pulverizing clay-like material, and continuously receiving the water to be treated from above. A first-stage tank that holds a fixed amount, a next-stage tank that continuously receives treated water discharged from the first-stage tank, and holds a predetermined amount of treated water; treated water that is held in the first-stage tank; and the next-stage tank And a communication port for communicating with the water to be treated held in the water treatment, wherein the water activator is in contact with the water to be treated held in both the first-stage tank and the next-stage tank. Device.

First, “pebbles obtained from a mixture of porous volcanic gravel and black soil that is sterilized by oxidation treatment, improves adsorption and air dissolution efficiency, and is suitable for a microbial medium. And / or a water quality activator comprising a powdered product of a clay-like material ”(this activator) is the water quality activator according to claim 1 of the previous patent publication (Patent No. 2903359). Since the manufacturing method and the like are described in detail in the previous patent publication, the description is omitted here.
This apparatus is a water purification apparatus using this activator. The first stage tank continuously receives treated water from above and holds a predetermined amount of treated water. The next-stage tank continuously receives the treated water discharged from the first-stage tank via the communication port and holds a predetermined amount of treated water. The communication port is formed so as to allow communication between the water to be treated held in the first tank and the water to be treated held in the next tank. This activator is in contact with both the water to be treated in the first tank and the water to be treated in the next tank, so that the water to be treated in both the first tank and the next tank. Water quality is purified. In addition, the apparatus can be simply configured by the first-stage tank, the next-stage tank, the communication port, and the present activator as described above, and in addition to suppressing the cost required for construction and maintenance, the present activator is used. Water purification with high efficiency.

Further, as described above, the communication port is formed so as to communicate the treated water held in the first-stage tank and the treated water held in the next-stage tank, so that the first-stage tank is covered with the next-stage tank. The treated water can be made to enter gently, and water purification in the next-stage tank can be promoted by retaining the suspended matter floating in the treated water and the present activator in the next-stage tank. Since many of these suspended solids and this activator have a specific gravity greater than that of water, in order to keep them well in the next-stage tank, the communication port is located as deep as possible in the treated water held in the next-stage tank. It is preferable to form (in order for these things that have entered the next tank through the communication port to escape from the next tank, it is necessary to move upward from the communication port. The upward travel distance required for escape can be increased, thereby preventing or reducing the inadvertent escape of these from the next tank.)
From this, the communication port (determined by the position of the uppermost part of the portion where the communication port is opened inside the next-stage tank) is the depth of the water to be treated in the next-stage tank. (The depth of the deepest position of the water to be treated) may be formed at a position deeper than half (that is, the uppermost position p of the portion where the communication port is opened inside the next-stage tank) In addition, it is located below 1/2 of the depth d of the deepest position of the water to be treated in the next tank, and more preferably, the position p is located below 1/3 of the depth d. Most preferably, the position p is located below ¼ of the depth d, which are “below ½ of the depth d” and “below ３ of the depth d”. And “below ¼ of d”, etc., lead from the bottom of the water to be treated at the deepest position of the water to be treated (in other words, from the bottom of the next tank). Refers to each above "1/2 depth d", than the "1/4 of d" go position and "one-third of the depth d" is lower.

Two or more pairs of tanks formed by the first-stage tank and the next-stage tank are provided in series, and are discharged from the next-stage tank of the upstream pair that is one of the pairs provided in series of two or more. The treated water may be received by the first-stage tank of the downstream pair, which is a pair different from the upstream pair among the pairs provided in series with two or more (hereinafter, referred to as “multiple pair apparatus”).
In this way, a plurality of pairs of tanks formed by the first-stage tank and the next-stage tank are connected in series, and the treated water flows from the pair located on the upstream side to the pair located on the downstream side. As a result, the quality of the water to be treated can be improved (for example, by increasing the degree of purification, the quality of the water treated by this apparatus can be improved).

In the case of a multi-pair device, the first-stage tank of the downstream pair receives treated water that overflows (overflows) from the upper end of the next-stage tank of the upstream pair (hereinafter referred to as “overflow main apparatus”). .).
This eliminates the need for a special mechanism for passing the treated water from the pair located upstream to the pair located downstream, so that the apparatus can be easily configured and maintenance work can be reduced. (The cost required for construction and maintenance of the apparatus can be reduced).

It may further comprise a retentate that retains the water quality activator on the surface and sneaks into the water to be treated (hereinafter referred to as “retained material apparatus”).
In this way, compared with the case where the powdery water activator is simply suspended in the water to be treated, the water activator is retained on the surface of the retentate, thereby preventing the sudden dissipation of the water activator. The water quality activator can be reduced and reliably contacted with the water to be treated. The retentate is placed inside the first tank and / or the next tank (that is, only the first tank, only the next tank, or both the first tank and the next tank). (Of course, the retentate is disposed such that the water quality activator retained on the retentate surface comes into contact with the water to be treated).
In addition, the retained material is not limited in any way as long as it can retain the water quality active agent on the surface in a state of being infiltrated into the water to be treated. A net-like material having a large surface area for holding the agent, a Raschig ring, a lesser ring, a crown shape, or the like may be used. In addition, it is preferable to form the retentate using a resin material such as polyethylene or polyamide because the water quality activator is well retained on the retentate surface. In particular, it is preferable to use a mesh-like object using a flexible resin material as the holding object because the shape of the holding object can be changed well according to the shape of the space in which the holding object is disposed. The retention of the water quality active agent on the surface of the retentate is continued (for example, several hours or more, preferably one day or more, more preferably seven days or more, most preferably one month or more) on the surface. It is sufficient if the water quality active agent is retained, and it is not always necessary to retain it permanently or semipermanently (of course, it may be retained permanently or semipermanently).

The water quality activator solidified by the binder may be disposed so as to infiltrate the water to be treated.
Here, “the water quality activator solidified by the binder” means the water quality activator according to claim 2 of the previous patent (Patent No. 2903359) (that is, the present activator solidified by the binder). The method for producing the activator and the like have been described in detail in the previous patent and will not be described here.
By using the water quality active agent that has been solidified in this way, the water quality active agent is unexpectedly used compared to the case where the powdered water quality active agent is suspended in the water to be treated. Dissipation is prevented or reduced, and the water quality activator can be brought into contact with the water to be treated. The water quality activator solidified with the binder is the first tank and / or the next tank (that is, only the first tank, only the next tank, both the first tank and the next tank). (Of course, the water quality activator solidified with the binder is arranged so as to come into contact with the water to be treated).

The first-stage tank and the next-stage tank are formed by a tank body that stores the water to be treated, and a partition that is formed inside the tank body so as to partition the first-stage tank and the next-stage tank. In addition, the communication port may be formed in the partition wall.
In this way, the first stage tank and the next stage tank can be formed by using a common tank body and partitioning the inside of the tank body by a partition wall formed with a communication port. Can do. The “tank” is not limited in any way as long as it is a container that can accommodate the water to be treated in its internal space. For example, the bottom plate, And a side plate erected around the bottom plate (for example, the inner space may be a container having a rectangular parallelepiped shape).

In the case of the overflow main unit, the first-stage tank and the next-stage tank are formed so as to partition the tank body for storing the water to be treated and the first-stage tank and the next-stage tank inside the tank body. A partition wall disposed between the first-stage tank and the next-stage tank constituting the same pair, the communication port partition wall forming the communication port, and the upstream pair. A dam partition wall disposed between the next-stage tank and the downstream pair of the first-stage tanks and overflowing with water to be treated from an upper end portion, wherein the communication port partition walls and the dam partition walls are alternately arranged. It may be arranged in.
In this way, the first stage tank and the next stage tank can be formed by using a common tank body and partitioning the inside of the tank body by a partition wall formed with a communication port. Can do. Note that the “tank” is the same as described above, and thus the description thereof is omitted here.
In addition, here, the partition wall is a communication port partition wall (formed between the first tank and the next tank forming the same pair) in which a communication port is formed, and the water to be treated overflows from the upper end. And a weir partition wall (disposed between the upstream pair next-stage tank and the downstream pair first-stage tank), and these communication port partition walls and weir partition walls are alternately disposed, In a multi-pair device comprising two or more tank pairs formed in series by the first-stage tank and the next-stage tank, the first-stage tank of the downstream pair is treated with the treated water that overflows (overflows) from the upper end of the next-stage tank of the upstream pair. It is possible to easily construct the overflow apparatus to be received by the apparatus.

The water to be treated may be in contact with a gas containing oxygen gas (hereinafter referred to as “oxygen contact apparatus”).
By doing so, the oxygen gas is dissolved in the water to be treated by contact between the gas containing oxygen gas and the water to be treated (the dissolved oxygen gas exists in the water to be treated), and the water purification of the water to be treated by the present activator is performed. Is done well.
The “gas containing oxygen gas” is not particularly limited as long as it contains oxygen gas and does not cause an undesirable reaction with the water to be treated. Examples thereof include a mixed gas containing an active gas (for example, nitrogen, a rare gas (such as helium, neon, or argon)) and an oxygen gas.

In the case of this oxygen contact apparatus, even if at least one of the first-stage tank and the next-stage tank has a space in which the gas (gas containing oxygen gas) exists above the water to be treated, which one of the tanks holds. Good.
By doing so, the water to be treated in the first tank and the next tank and the gas containing oxygen gas existing above the water to be treated can be easily and easily contacted (the water surface of the water to be treated and the gas are in contact with each other). Therefore, the oxygen contact apparatus can be configured easily. Needless to say, both the first-stage tank and the next-stage tank may have a space where the gas (gas containing oxygen gas) exists above the water to be treated.

  When purifying the quality of the water to be treated using the retained material apparatus, it is necessary to retain the active agent on the surface of the retained material. For this purpose, the active agent suspended or dissolved in water can be successfully held on the surface of the retentate. In addition, the retentate that is brought into contact with the surface of the active agent suspended or dissolved in water tends to be cumbersome due to moisture adhering to it, so that the active agent suspended or dissolved in water is contacted. Before holding, the holding material is arranged in advance in a predetermined position (the position where the holding material should be present when the holding material main apparatus purifies the water to be treated. Usually, it is inside the first-stage tank or the next-stage tank). Then, if the active agent suspended or dissolved in water is brought into contact, the operation can be performed successfully. That is, when purifying the quality of water to be treated using the retentate apparatus, a contact step of bringing the water quality activator suspended or dissolved in water into contact with the retentate disposed at a predetermined position; After the step, a supply step of continuously supplying the water to be treated to the first tank may be included.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited by these.

FIG. 1 is a front view of a water purification device (this device) 11 according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along a line AA in FIG. 1 (a tank body 13 and partition walls 21a1, 21a2, 21a3 described later). , 21a4, 21a5, 21a6, 21b1, 21b2, 21b3, 21b4, 21b5, etc. are schematic cross-sectional views for facilitating understanding, and the retainer 15 and the solid activator 17 described later are not shown. . The apparatus 11 will be described with reference to FIGS. 1 and 2.
In general, the apparatus 11 includes a tank body 13 for storing the water to be treated, and partition walls 21a1, 21a2, 21a3, 21a4, 21a5, 21a6, 21b1, 21b2, 21b3, 21b4 disposed inside the tank body 13. 21b5, a retentate 15 that holds the active agent on the surface and infiltrates into the water to be treated, and a main active agent (hereinafter referred to as “solid active agent”) 17 that is solidified with a binder. It becomes. In FIG. 1, the (vertical) upward direction is indicated by an arrow B, and the (vertical) downward direction is indicated by an arrow C. In FIG. 2, a first tank 31a, a second tank 31b, a third tank 31c, a fourth tank 31d, a fifth tank 31e, a sixth tank 31f, a seventh tank 31g, an eighth tank 31h, a ninth tank, which will be described later. The dimensions described inside the tank 31i, the tenth tank 31j, the eleventh tank 31k, and the twelfth tank 31l are the dimensions along the length L of each tank.

The tank body 13 has a hollow, substantially rectangular parallelepiped shape made of concrete, and its internal space 13a also has a substantially rectangular parallelepiped shape. Specifically, the tank body 13 includes a bottom plate 13b disposed substantially horizontally with a substantially rectangular main surface facing, a side plate 13c erected around the bottom plate 13b in a substantially vertical direction, and substantially horizontal. And a lid plate 13d disposed with the substantially rectangular main surface facing the main body. Of the 12 sides of the substantially rectangular parallelepiped formed by the tank body 13, the tank body 13 is arranged so that 4 sides are substantially oriented in the vertical direction and the remaining 8 sides are substantially oriented in the horizontal direction. Yes.
In addition, the dimension of the internal space 13a of the tank body 13 here is length L = 125cm (refer FIG.1 and 2), width W = 15cm (refer FIG.2), and height H = 50cm (refer FIG.1). there were.

Each of the partition walls 21a1, 21a2, 21a3, 21a4, 21a5, 21a6, 21b1, 21b2, 21b3, 21b4, and 21b5 has a plate shape having a substantially rectangular main surface so that the main surfaces are substantially parallel to each other. Are attached to the inner wall defining the internal space 13a of the tank body 13 (the main surfaces of the tank body 13 are oriented substantially vertically).
The partition walls 21a1, 21a2, 21a3, 21a4, 21a5, 21a6, 21b1, 21b2, 21b3, 21b4, 21b5 are communication ports 23a1, 23a2, 23a3, 23a4, 23a5, 23a6 between the lower ends of the partition walls and the inner wall of the tank body 13. There are provided two types of communication port partition walls 21a1, 21a2, 21a3, 21a4, 21a5, 21a6, and weir partition walls 21b1, 21b2, 21b3, 21b4, 21b5 where the water to be treated overflows from the upper end. ing. Note that the lower end portions (lower edges) of the communication port partition walls 21a1, 21a2, 21a3, 21a4, 21a5, and 21a6 substantially belong to one horizontal plane (that is, the communication port partition walls 21a1, 21a2, 21a3, 21a4, The heights of the lower ends (lower edges) of 21a5 and 21a6 are substantially the same.) Further, the upper end portions (upper edges) of the dam partitions 21b1, 21b2, 21b3, 21b4, and 21b5 belong to one horizontal plane (that is, the upper ends of the dam partitions 21b1, 21b2, 21b3, 21b4, and 21b5). (The height of the upper edge is almost the same.) And these communication port partition walls 21a1, 21a2, 21a3, 21a4, 21a5, 21a6 and dam partition walls 21b1, 21b2, 21b3, 21b4, 21b5 are directed from the right side to the left side in FIGS. As described later, along the direction in which the water to be treated flows), the communication port partition wall 21a1, the dam partition wall 21b1, the communication port partition wall 21a2, the dam partition wall 21b2, the communication port partition wall 21a3, the dam partition wall 21b3, the communication port partition wall 21a4, and the dam partition wall 21b4. The communication port partition walls and the weir partition walls are alternately arranged like a communication port partition wall 21a5, a weir partition wall 21b5, and a communication port partition wall 21a6.

These partition walls 21a1, 21a2, 21a3, 21a4, 21a5, 21a6, 21b1, 21b2, 21b3, 21b4, 21b5 and an inner wall that defines the inner space 13a of the tank body 13 have a plurality of internal spaces 13a. A tank is formed. Specifically, from the right side to the left side in FIGS. 1 and 2 (that is, along the direction in which the water to be treated flows as described later), the first tank 31a, the second tank 31b, and the third tank 31c. 12 tanks of 4th tank 31d, 5th tank 31e, 6th tank 31f, 7th tank 31g, 8th tank 31h, 9th tank 31i, 10th tank 31j, 11th tank 31k, and 12th tank 31l. Is formed.
The first tank 31a communicates with the second tank 31b through the communication port 23a1, and the second tank 31b communicates with the third tank 31c through the space above the weir partition wall 21b1 (the internal space 13a of the tank body 13). The third tank 31c communicates with the fourth tank 31d through the communication port 23a2, and the fourth tank 31d communicates with the fifth tank 31e through the space above the weir partition wall 21b2 (the internal space 13a of the tank body 13). The fifth tank 31e communicates with the sixth tank 31f through the communication port 23a3, and the sixth tank 31f communicates with the seventh tank 31g through the space above the weir partition wall 21b3 (the internal space 13a of the tank body 13). The seventh tank 31g communicates with the eighth tank 31h through the communication port 23a4, and the eighth tank 31h communicates with the ninth tank 31i through the space above the weir bulkhead 21b4 (the internal space 13a of the tank body 13). No. from tank 31i The 0 tank 31j communicates with the communication port 23a5, the 10th tank 31j communicates with the 11th tank 31k via the space above the weir partition wall 21b5 (the internal space 13a of the tank body 13), and the 11th tank 31k to the 12th tank. The tank 31l communicates with the communication port 23a6.

The tank body 13 (lid plate 13d) is formed with an inlet 43 for water to be treated (raw water) 41 so as to be positioned above the first tank 31a. Water to be treated (raw water) 41 injected from the injection port 43 enters the first tank 31a.
On the other hand, a drain port 53 through which treated water (treated water) 51 flows out is formed at a predetermined height of the side plate 13c of the tank body 13 that defines the twelfth tank 31l.

And the 1st tank 31a, the 2nd tank 31b, the 3rd tank 31c, the 4th tank 31d, the 5th tank 31e, the 6th tank 31f, the 7th tank 31g, the 8th tank 31h, the 9th tank 31i, the 10th tank The holding | maintenance 15 is filled in the lower part of 31j, the 11th tank 31k, and the 12th tank 31l. Here, as the retainer 15, the product name of Tokyo Tobari Co., Ltd .: PE bird net A-50 (mesh size is approximately square of 45 mm) is used, and each tank has a PE bird of 9 m × 1.6 m. Two pieces of mesh A-50 are filled (that is, the entire apparatus 11 uses 9 m × 1.6 m PE bird net A-50, 2 sheets / tank × 12 tanks = 24 sheets). .)
The first tank 31a, the second tank 31b, the third tank 31c, the fourth tank 31d, the fifth tank 31e, the sixth tank 31f, the seventh tank 31g, the eighth tank 31h, the ninth tank 31i, and the tenth tank. 31j, the 11th tank 31k, and the 12th tank 31l filled with the retentate 15 are disposed at a position sufficiently lower than the drain port 53 (the upper surface of the filled retentate 15 is higher than the drain port 53. Low.).

Furthermore, in the second tank 31b, the solid activator 17 is positioned above the retentate 15 and lower than the drain port 53 (a position lower than the water surface position indicated by the dotted line M, as will be described later). Is arranged. Although not shown here, the solid solid activator 17 is arranged at a predetermined position by being suspended and supported by the other end of a wire rod having one end attached to the upper end of the weir partition wall 21b1.
The solid activator 17 uses the water quality activator according to claim 2 of the previous patent (Patent No. 2903359), and the method for producing the activator is described in detail in the previous patent publication. The description is omitted here.

A method of using the apparatus 11 will be described.
First, the holding | maintenance thing 15 (thing before this active agent is hold | maintained on the surface) and the solid-state solid active agent 17 are arrange | positioned previously. Specifically, a retainer 15 (before the active agent is retained on the surface) constituted by a folded net (product name: PE bird net A-50) of Tokyo Tohari Co., Ltd., 1st tank 31a, 2nd tank 31b, 3rd tank 31c, 4th tank 31d, 5th tank 31e, 6th tank 31f, 7th tank 31g, 8th tank 31h, 9th tank 31i, 10th tank 31j, It fills and arrange | positions to the predetermined position (lower part of each tank as shown in FIG. 1) of each of the 11th tank 31k and the 12th tank 31l. And solid solid activator 17 is arrange | positioned in a predetermined position by suspending and supporting to the other end of the wire rod which one end was attached to the upper end part of dam partition 21b1.

First, water (for example, clean water, industrial water, etc.) is injected from the inlet 43 of the water to be treated (raw water) 41, and water is filled to a predetermined depth in the internal space 13a of the tank body 13. This predetermined depth is indicated by a dotted line M (a position where water begins to overflow from the drain port 53) in FIG. 1 (when the water surface comes to the dotted line M, it is stuck in the internal space 13a of the tank body 13). Water is about 90 liters).
Secondly, 27 g of the powdery activator (the water quality activator according to claim 1 of the previous patent (Patent No. 2903359)) was put into 2 liters of water and sufficiently stirred and mixed. The obtained mixture of the active agent and water (hereinafter referred to as “the present mixture”) is injected from the injection port 43 into the internal space 13a of the tank body 13 (specifically, the first tank 31a).

Third, water to be treated (raw water) 41 is injected from the inlet 43 into the internal space 13a of the tank body 13 (specifically, the first tank 31a). The water to be treated (raw water) 41 was continuously injected for 35 days, and 250 liters / day was injected every day at a substantially constant volume flow rate (that is, the constant volume flow rate was 250 liters / 24 hours = About 10.4 liters / hour). In this case, wastewater from a food processing plant is used as treated water (raw water) 41, and the analysis results are shown in Table 1 (in Table 1, “l (liter)” means “l” means liter). Is shown.) Further, as described above, when there is a water surface on the dotted line M, since the water to be inserted into the internal space 13a of the tank body 13 is about 90 liters, the average of the water to be treated staying in the internal space 13a of the tank body 13 The residence time is 90 liters / (10.4 liters / hour) = 8-9 hours.
When the injection of the water to be treated (raw water) 41 is started, the mixture injected into the first tank 31a in the second is moved from the first tank 31a to the second tank 31b via the communication port 23a1, and the second tank From 31b to the third tank 31c, the upper part of the dam 21b1 overflows and moves, from the third tank 31c to the fourth tank 31d moves through the communication port 23a2, and from the fourth tank 31d to the fifth tank 31e. It overflows and moves over the upper part of the dam partition wall 21b2, moves from the fifth tank 31e to the sixth tank 31f via the communication port 23a3, and overflows from the sixth tank 31f to the seventh tank 31g over the upper part of the dam partition wall 21b3. Move from the seventh tank 31g to the eighth tank 31h via the communication port 23a4, and move from the eighth tank 31h to the ninth tank 31i by overflowing the upper portion of the weir partition wall 21b4, and the ninth tank 31i. To the 10th tank 31j through the communication port 23a5 And, from the 10th tank 31j to 11 tank 31k moves to overflow the top of the weir bulkhead 21b5, the eleventh tank 31k to 12th tank 31l moves through the communication port 23a6. Thus, while this mixture moves from the 1st tank 31a to the 12th tank 31l, the holding | maintenance material 15 (this active agent hold | maintains on the surface) arrange | positioned in each tank from the 1st tank 31a to the 12th tank 31l. The active agent contained in the mixture is held on the surface of the holding material 15 disposed in each tank from the first tank 31a to the twelfth tank 31l. The
In addition, the treated water (raw water) 41 injected also includes the first tank 31a, the second tank 31b, the third tank 31c, the fourth tank 31d, the fifth tank 31e, the sixth tank 31f, the seventh tank 31g, The 8th tank 31h, the 9th tank 31i, the 10th tank 31j, the 11th tank 31k, and the 12th tank 31l are moved in this order (including the contact with the surface of the retentate 15 holding the activator on the surface. In the second tank 31b, the solid activator 17 is also contacted.) During this movement, the water quality is purified, and finally overflows from the drain port 53 as treated water (treated water) 51. Drained.

(Table 1) Analysis result of treated water (raw water)-Permeability: 9.0 degrees-pH: 5.0
・ BOD: 100mg / l (liter)
-CODMn: 89 mg / l (liter)
・ SS: 45mg / l (liter)
・ Total nitrogen: 8.38 mg / l (liter)
・ Total phosphorus: 1.50 mg / l (liter)

Fourth, after 35 days from the start of the injection of the treated water (raw water) 41, the treated water (treated water) 51 drained from the drain port 53 is collected and the treated water (raw water) described above is collected. ) The same analysis as 41 was performed. The analysis results of the treated water (treated water) 51 are shown in Table 2.
In addition, the CODMn value of the water to be treated (raw water) 41 fluctuates every day in the range of about 70 to 250 mg / l (liter) until 35 days have passed since the injection of the water to be treated (raw water) 41 was started. However, the change in the CODMn value of the water to be treated (treated water) 51 was extremely small compared to this fluctuation range.
Moreover, although the purification mechanism of to-be-processed water is not necessarily clear, it estimates as follows. That is, it is observed that a sludge-like substance adheres to the surface of the retentate 15 and grows in about one to two weeks after the injection of the water to be treated (raw water) 41 is started. It is presumed that biota is generated in the sludge-like substance, and water quality is purified by this biota.

(Table 2) Analysis result of treated water (treated water)-Permeability: 13.0 degrees-pH: 5.9
・ BOD: 53mg / l (liter)
-CODMn: 35 mg / l (liter)
SS: 13 mg / l (liter)
・ Total nitrogen: 5.21 mg / l (liter)
・ Total phosphorus: 0.90 mg / l (liter)

In this way, the present apparatus 11 can be simply configured, and it is not necessary to perform air aeration such as air, and the first tank 31a, the second tank 31b, the third tank 31c, the fourth tank 31d, and the fifth tank 31e. The sixth tank 31f, the seventh tank 31g, the eighth tank 31h, the ninth tank 31i, the tenth tank 31j, the eleventh tank 31k, and the twelfth tank 31l are naturally moved (naturally flowed). The treated water (raw water) 41 can be purified with good water quality. Since it does not require air aeration such as air or forced movement of the water to be treated (for example, pumping by pump or stirring by a stirring blade driven by a motor), the configuration required for these can be omitted. The apparatus 11 can be easily configured as compared with the case where the configuration is attached, and can reduce the cost required for maintenance and inspection of the configuration.
In addition, it cannot be overemphasized that this apparatus 11 can change a design suitably according to the water quality, quantity, etc. of to-be-processed water (raw water) 41. FIG. For example, a water channel (first tank 31a, second tank 31b, third tank 31c, fourth tank 31d, fifth tank 31e, sixth tank 31f, seventh tank 31g, eighth tank 31h, ninth tank 31i, The dimension (depth, for example, in the horizontal plane of each tank from the first tank 31a to the twelfth tank 31l) of the tenth tank 31j, the eleventh tank 31k, and the twelfth tank 31l. ), Changing the average residence time of the water to be treated (changing the capacity of the internal space 13a of the tank body 13, the supply volume speed of the water to be treated (raw water) 41, etc.) The amount of the retentate 15 held in the container is changed, the amount of the solid solid activator 17 (the amount of the solid activator 17 disposed in the second tank 31b is changed, or the solid activator 17 is disposed. You can change the number of tanks to be installed.) It can be.
Moreover, although the temperature of to-be-processed water was about 20 degreeC here, it cannot be overemphasized that heating and cooling may be performed as needed.

As described above, the device 11 is sterilized by oxidation treatment to improve the adsorptivity and air dissolution efficiency, and is a gravel obtained from a mixture of porous volcanic gravel and black soil suitable for a microbial medium. Water purification using a powdery product obtained by pulverizing a powdery product and / or a clay-like product (that is, the present active agent (the water quality active agent according to claim 1 of the previous patent (Patent No. 2903359))) Device. This apparatus 11 is a first-stage tank (first tank 31a, third tank 31c, fifth tank 31e, seventh tank 31g, ninth tank 31i) that continuously receives treated water from above and holds a predetermined amount of treated water. , Eleventh tank 31k) and the first stage tank (first tank 31a, third tank 31c, fifth tank 31e, seventh tank 31g, ninth tank 31i, eleventh tank 31k) Next-stage tank (second tank 31b, fourth tank 31d, sixth tank 31f, eighth tank 31h, tenth tank 31j, twelfth tank 31l) continuously receiving a predetermined amount of water to be treated and the first stage To-be-treated water held in the tanks (first tank 31a, third tank 31c, fifth tank 31e, seventh tank 31g, ninth tank 31i, eleventh tank 31k) and the next-stage tank (second tank 31b, 4th tank 31d, 6th tank 31f, 8th tank 31h, 10th tank 31j, 12th tank 31l) Communication ports 23a1, 23a2, 23a3, 23a4, 23a5, 23a6 for communicating with the inside, and the first tank (first tank 31a, third tank 31c, fifth tank 31e, seventh tank 31g, Both the ninth tank 31i, the eleventh tank 31k) and the next tank (the second tank 31b, the fourth tank 31d, the sixth tank 31f, the eighth tank 31h, the tenth tank 31j, the twelfth tank 31l) The water quality activator (this activator) comes into contact with the water to be treated (in the second tank 31b, the solid activator 17 (this activator is solidified) and the retentate 15. And the active agent held on the surface of the retentate 15 in each of the tanks other than the second tank 31b.)
The next tank corresponding to the first tank 31a, which is the first tank, is the second tank 31b. The second tank 31b is the water to be treated and the second tank 31b, which is the next tank. The communication port 23a1 communicates with the water to be treated. Similarly, the next tank corresponding to the third tank 31c, which is the first tank, is the fourth tank 31d, and is stored in the third tank 31c, which is the first tank, and in the fourth tank 31d, which is the next tank. The communication port 23a2 communicates with the water to be treated. The next tank corresponding to the fifth tank 31e, which is the first tank, is the sixth tank 31f. The treated water held in the fifth tank 31e, which is the first tank, and the sixth tank 31f, which is the next tank. The communication port 23a3 communicates with the treated water. The next tank corresponding to the 7th tank 31g as the first tank is the 8th tank 31h. The treated water held in the 7th tank 31g as the first tank and the 8th tank 31h as the next tank. The communication port 23a4 communicates with the treated water. The next tank corresponding to the 9th tank 31i as the first tank is the 10th tank 31j, the water to be treated held in the 9th tank 31i as the first tank and the 10th tank 31j as the next tank. The communication port 23a5 communicates with the treated water. The next tank corresponding to the eleventh tank 31k as the first tank is the twelfth tank 31l, which is held in the treated water held in the eleventh tank 31k as the first tank and in the twelfth tank 31l as the next tank. The communication port 23a6 communicates with the water to be treated.

  In addition, each of the communication ports 23a1, 23a2, 23a3, 23a4, 23a5, and 23a6 is located at the uppermost position p of the portion where the communication port is opened inside the next-stage tank that each communication port communicates (here, in FIG. The lower end position of the communication port partition walls 21a1, 21a2, 21a3, 21a4, 21a5, 21a6 As an example, the uppermost portion of the portion where the communication port 23a1 is opened inside the next tank (second tank 31b) to which the communication port 23a1 communicates The position p is shown as position p in FIG. 1.) is the depth of the treated water held in the next-stage tank (the depth of the deepest position of the treated water held in the next-stage tank) d. (Of course, it is located below half (1/2) of d). As described above, “below half (1/2) of the depth d”, “below 1/3 of the depth d”, “below 1/4 of d”, etc. “1/2 of the depth d” vertically upward from the lowest part of the treated water at the deepest position of the treated water (in other words, the bottom of the next-stage tank; indicated by the dotted line Q in FIG. 1). , “Below 1/3 of depth d” and “1/4 of d”. Further, here, the depth d is indicated by a dotted line M from the lowest part of the water to be treated at the deepest position (in other words, the bottom surface of the next-stage tank; indicated by the dotted line Q in FIG. 1). The distance to the indicated water surface.

And here, the first tank (first tank 31a, third tank 31c, fifth tank 31e, seventh tank 31g, ninth tank 31i, eleventh tank 31k) and the next tank (second tank 31b, fourth tank). 6 (two or more) series of tanks formed by 31d, 6th tank 31f, 8th tank 31h, 10th tank 31j, and 12th tank 31l) are provided. Specifically, it is formed by the first tank pair formed by the first tank first tank 31a and the second tank second tank 31b, the first tank third tank 31c and the next tank fourth tank 31d. Formed by a pair of second tank, a third tank formed by a first tank 5th tank 31e and a next tank 6th tank 31f, a first tank 7th tank 31g and a next tank 8th tank 31h. The fourth tank pair, the fifth tank pair formed by the first tank 9th tank 31i and the next tank 10th tank 31j, and the first tank 11th tank 31k and the next tank 12th tank 31l. There are six tank pairs, a sixth tank pair formed by
Furthermore, the treated water discharged from the next-stage tank of the upstream pair which is one of the pairs provided in series of two or more is a pair different from the upstream pair among the pairs provided in series of two or more. The first-stage tank of the downstream pair that is That is, the water to be treated discharged from the second tank 31b of the next tank of the first tank pair that is the upstream pair is the downstream pair that is different from the pair of the first tank that is the upstream pair. The first tank 3c 31c of the second tank pair receives (the treated water overflowing from the upper end of the upstream tank 2nd tank 31b is received by the downstream first tank 3c). . Similarly, the treated water discharged from the next tank 4th tank 31d of the second tank pair as the upstream pair is a downstream pair which is a different pair from the second tank pair as the upstream pair. The first tank 5th tank 31e of the third tank pair receives (the water to be treated overflowing from the upper end of the upstream tank 4th tank 31d is received by the downstream first tank 5e 31e. ). The treated water discharged from the sixth tank 31f of the next-stage tank of the pair of the third tank as the upstream pair is the fourth of the downstream pair that is different from the pair of the third tank as the upstream pair. The first tank 7g 31g of the first tank of the pair of tanks receives (the treated water overflowing from the upper end of the sixth tank 31f of the upstream next tank is received by the seventh tank 31g of the downstream first tank). The treated water discharged from the next-stage tank 8th tank 31h of the fourth tank pair that is the upstream pair is the fifth downstream pair that is a different pair from the fourth tank pair that is the upstream pair. The first-stage tank 9th tank 31i of the pair of tanks receives (the treated water overflowing from the upper end of the upstream-stage next-stage tank 8th tank 31h is received by the first-stage tank 9th tank 31i of the downstream pair). Then, the water to be treated discharged from the next tank 10th tank 31j of the pair of the fifth tank that is the upstream pair is a downstream pair that is a different pair from the pair of the fifth tank that is the upstream pair. The first tank 11k of the first tank 31k of the sixth tank pair receives (the treated water overflowing from the upper end of the upstream tank 10th tank 31j is received by the downstream first tank 11k). .

Further, here, the water quality activator (the activator (the water quality activator according to claim 1 of the previous patent (patent number 2903359)) of the present activator) is held on the surface, and the retentate 15 entering the treated water is further Prepare. In addition, the holding | maintenance object 15 is comprised by what folded the net | network (product name: PE bird net A-50) of Tokyo Tohari Co., Ltd., and is a mesh-like thing.
In addition, the second tank so that the solid solid activator 17 (this activator is solidified) that is solidified with the binder is infiltrated into the water to be treated. It is arranged in 31b.

The first tank (first tank 31a, third tank 31c, fifth tank 31e, seventh tank 31g, ninth tank 31i, eleventh tank 31k) and the next tank (second tank 31b, fourth tank 31d, The sixth tank 31f, the eighth tank 31h, the tenth tank 31j, and the twelfth tank 31l) are the tank body 13 that stores the water to be treated and the first tank (first tank 31a, third tank) inside the tank body 13. Tank 31c, fifth tank 31e, seventh tank 31g, ninth tank 31i, eleventh tank 31k) and next tank (second tank 31b, fourth tank 31d, sixth tank 31f, eighth tank 31h, tenth tank). Partition wall 21a1, 21a2, 21a3, 21a4, 21a5, 21a6, 21b1, 21b2, 21b3, 21b4, 21b5 formed to partition between tank 31j and twelfth tank 31l). The partition walls 21a1, 21a2, 21a3, 21a4, 21a5, 21a6, 21b1, 21b2, 21b3, 21b4, and 21b5 are disposed between the first-stage tank and the next-stage tank that constitute the same pair. Water is to be treated from the upper end portion, which is disposed between the communication port partition walls 21a1, 21a2, 21a3, 21a4, 21a5, 21a6 and the upstream pair of the next-stage tank and the downstream pair of the first-stage tank. 2 types of dam partition walls 21b1, 21b2, 21b3, 21b4, 21b5 overflowing, communication port partition walls 21a1, 21a2, 21a3, 21a4, 21a5, 21a6 and dam partition walls 21b1, 21b2, 21b3, 21b4, 21b5 are alternately arranged (along the direction in which the water to be treated flows).
The communication port partition wall 21a1 is disposed between the first-stage tank first tank 31a and the next-stage tank second tank 31b constituting the first tank pair, and a communication port 23a1 is formed. The communication port partition wall 21a2 is disposed between the first-stage tank third tank 31c and the next-stage tank fourth tank 31d constituting the second tank pair, and a communication port 23a2 is formed. The communication port partition wall 21a3 is disposed between the first-stage tank fifth tank 31e and the next-stage tank sixth tank 31f constituting the third tank pair to form a communication port 23a3. The communication port partition wall 21a4 is disposed between the first-stage tank 7th tank 31g and the next-stage tank 8th tank 31h constituting the fourth tank pair, and the communication port 23a4 is formed. The communication port partition wall 21a5 is disposed between the first-stage tank 9th tank 31i and the next-stage tank 10th tank 31j constituting the fifth tank pair, and the communication port 23a5 is formed. The communication port partition wall 21a6 is disposed between the first-stage tank 11th tank 31k and the next-stage tank 12th tank 31l constituting the sixth tank pair, and a communication port 23a6 is formed. The weir bulkhead 21b1 is disposed between the upstream tank (first tank pair) next-stage tank second tank 31b and the downstream pair (second tank pair) first-stage tank third tank 31c. The treated water overflows. The dam partition wall 21b2 is disposed between the upstream tank (second tank pair) next-stage tank fourth tank 31d and the downstream pair (third tank pair) first-stage tank fifth tank 31e. The treated water overflows. The weir bulkhead 21b3 is disposed between the upstream tank (third tank pair) next-stage tank sixth tank 31f and the downstream pair (fourth tank pair) first-stage tank seventh tank 31g. The treated water overflows. The weir bulkhead 21b4 is disposed between the upstream tank (fourth tank pair) next-stage tank eighth tank 31h and the downstream pair (fifth tank pair) first-stage tank ninth tank 31i. The treated water overflows. The weir bulkhead 21b5 is disposed between the upstream tank (fifth tank pair) next-stage tank tenth tank 31j and the downstream pair (sixth tank pair) first-stage tank eleventh tank 31k. The treated water overflows.

  And in this apparatus 11, 1st tank 31a, 2nd tank 31b, 3rd tank 31c, 4th tank 31d, 5th tank 31e, 6th tank 31f, 7th tank 31g, 8th tank 31h, 9th All of the tank 31i, the tenth tank 31j, the eleventh tank 31k, and the twelfth tank 31l are spaces (indicated by dotted lines M) in which air (gas containing oxygen gas) exists above the water to be treated. This corresponds to the internal space 13a of the tank body 13 above the surface of the water that is generated, and the atmosphere of the space can freely circulate with the outside air, and fresh air always exists in the space. .) The air existing in the space and the water to be treated are in contact with each other on the water surface indicated by the dotted line M.

In addition, the second step (the step of injecting the mixture into the first tank 31a from the inlet 43) and the third step (the treated water (raw water) 41 are the inlets) described in the method of using the apparatus 11. 43, the step of pouring from the first tank 31a to the twelfth tank 31l while the mixture moves from the first tank 31a to the twelfth tank 31l. Since the product 15 (the one before the active agent is held on the surface) and the present mixture are brought into contact with each other (the present active agent contained in the present mixture is disposed in each tank from the first tank 31a to the twelfth tank 31l). The water quality activity suspended or dissolved in water in the holding material 15 (the one before the active agent is held on the surface) disposed in a predetermined position. The contact step which makes an agent (this active agent) contact is comprised. Then, the third step (treated water (raw water) 41 is poured after the mixture comes into contact with the retentate 15 (the one before the active agent is retained on the surface) disposed in each tank. In the step of injecting from the inlet 43 to the first tank 31a, after the contacting step, the first stage tank (first tank 31a, third tank 31c, fifth tank 31e, seventh tank 31g, ninth tank 31i) , Constitutes a supply step for continuously supplying to the eleventh tank 31k).
As described above, the method of using the device 11 is a water purification method using the retained material device, and the retained material 15 (before the active agent is retained on the surface) disposed at a predetermined position. A contact step in which the water quality active agent (this active agent) suspended or dissolved in water is contacted, and after the contact step, the water to be treated is supplied to the first stage tank (first tank 31a, third tank 31c, fifth tank). A tank 31e, a seventh tank 31g, a ninth tank 31i, and an eleventh tank 31k).

It is a front view of the water purification apparatus (this apparatus) of this invention of one Embodiment. It is AA sectional drawing of FIG.

Explanation of symbols

11 This apparatus 13 Tank 13a Internal space 13b Bottom plate 13c Side plate 13d Cover plate 15 Retained material 17 Solid activator 21a1, 21a2, 21a3, 21a4, 21a5, 21a6, 21b1, 21b2, 21b3, 21b4, 21b5 Partition (21a1, 21a2, 21a3, 21a4, 21a5, 21a6 communication port partition)
(21b1, 21b2, 21b3, 21b4, 21b5 weir bulkhead)
23a1, 23a2, 23a3, 23a4, 23a5, 23a6 Communication port 31a 1st tank 31b 2nd tank 31c 3rd tank 31d 4th tank 31e 5th tank 31f 6th tank 31g 7th tank 31h 8th tank 31i 9th tank 31j 10th tank 31k 11th tank 31l 12th tank 41 Water to be treated (raw water)
43 Inlet 51 Water to be treated (treated water)
53 Drain outlet

Claims (12)

Sterilized by oxidation treatment to improve adsorptivity and air dissolution efficiency, and powdered gravel and / or clay obtained from a mixture of porous volcanic gravel and black soil suitable for microbial media A water purification device using a water quality activator comprising a powdered product,
A first-stage tank that continuously receives treated water from above and holds a predetermined amount of treated water; a next-stage tank that continuously receives treated water discharged from the first-stage tank and holds a predetermined amount of treated water; A communication port for communicating the treated water held in the first tank and the treated water held in the next tank;
A water purification apparatus in which the water quality activator is in contact with the water to be treated which both the first stage tank and the next stage tank hold.       The water purification apparatus according to claim 1, wherein the communication port is formed at a position deeper than half of the depth of the water to be treated held in the next-stage tank. Two or more tank pairs formed by the first tank and the next tank are provided in series,
The treated water discharged from the upstream tank of the upstream pair, which is one of the pairs provided in series of two or more, is a pair different from the upstream pair among the pairs provided in series of two or more. The water purification apparatus according to claim 1 or 2, which is received by the first-stage tank of a downstream pair.       The water purification apparatus according to claim 3, wherein the water to be treated that overflows from the upper end of the next-stage tank of the upstream pair is received by the first-stage tank of the downstream pair.       The water purification apparatus according to any one of claims 1 to 4, further comprising a retentate that retains the water quality activator on a surface and infiltrates the water to be treated.       The water purification apparatus according to claim 5, wherein the retentate is a mesh.       The water purification apparatus according to any one of claims 1 to 6, wherein the water quality activator solidified with a binder is disposed so as to infiltrate into the water to be treated. The first-stage tank and the next-stage tank are formed by a tank body that stores the water to be treated, and a partition that is formed inside the tank body so as to partition the first-stage tank and the next-stage tank. And
The water purification apparatus according to any one of claims 1 to 7, wherein the communication port is formed in the partition wall. The first-stage tank and the next-stage tank are formed by a tank body that stores the water to be treated, and a partition that is formed inside the tank body so as to partition the first-stage tank and the next-stage tank. And
The partition wall includes a communication port partition wall disposed between the first-stage tank and the next-stage tank constituting the same pair, the communication port being formed, the next-stage tank of the upstream pair, and the downstream pair. A dam partition wall disposed between the first-stage tank and the water to be treated overflows from the upper end, and the communication port partition wall and the dam partition wall are alternately disposed. The water purification apparatus according to claim 4.       The water purification apparatus according to any one of claims 1 to 9, wherein the treated water is in contact with a gas containing oxygen gas.       The water purification apparatus according to claim 10, wherein at least one of the first-stage tank and the next-stage tank has a space in which the gas exists above the water to be treated that the one of the first-stage tank and the next-stage tank holds. A water purification method using the water purification device according to claim 5 or 6,
A contact step of bringing the water-soluble active agent suspended or dissolved in water into contact with the retentate disposed at a predetermined position;
A water quality purification method comprising, after the contacting step, a supply step of continuously supplying the treated water to the first tank.

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