JP6023159B2 - Water purifier - Google Patents

Description

  The present invention relates to a water purifier using a separating material mainly composed of metals such as magnesium, magnesium alloys and iron.

Wastewater from plating plants, metal smelters, waste incinerators, etc. (hereinafter, wastewater, groundwater, wastewater containing metal ions such as eluate, unless otherwise specified) is toxic to humans, such as mercury, Heavy metals such as lead, cadmium, arsenic, chromium, copper and nickel are included. In addition, arsenic, an element that is toxic to living organisms, is usually used for wastewater from old mines in hot water and hot air deposits, groundwater such as hot water from hot spring water and geothermal power plants, industrial waste, incineration ash from urban waste, and fly ash. It is also contained in electric furnace steelmaking dust and the like. Also, factory springs such as well water, civil engineering, architecture, and waterworks may contain a lot of iron. In addition, rivers around the abandoned mine needed countermeasures against red water generated by the outflowing iron.
Conventionally, such a water treatment includes a method of forming a compound by adding a neutralizing agent or a precipitating agent to precipitate and agglomerate, a method using an inorganic ion exchanger or an organic ion exchanger, and a method using an adsorbent. is there. The precipitation agglomeration method separates (removes) substances dissolved in waste water by depositing a hardly soluble compound such as a hydroxide, sulfide, or carbonate, and solid-liquid separation. In the method using an inorganic ion or organic ion exchanger, an ionic component contained in waste water is separated by a substitution reaction with an ion of the inorganic ion or organic ion exchanger. In the method using an adsorbent, separation is performed by an adsorption phenomenon in which a substance dissolved in waste water is removed from the surface of a porous adsorbent represented by activated carbon. Among the separated metals, for example, industrially useful and valuable zinc, silver, gold, nickel, chromium and the like are recovered for reuse.
In recent years, magnesium alloys have been used for housings such as personal computers, but recycling of magnesium alloys has become an issue.
In response to these problems, as a wastewater treatment method utilizing the ability of magnesium hydroxide produced by the reaction of magnesium with water in an aqueous solution to adsorb various elements, (Patent Document 1) includes "pure magnesium, A method is disclosed in which a magnesium alloy is pulverized, ribbon-shaped, sintered, processed into a filter shape, and contacted with arsenic-containing water, and even alkaline water having a pH of more than 7 is removed efficiently (Patent Document 2). ) "Adds an adsorbent composed mainly of magnesium or magnesium alloy into the wastewater containing metal ions, and adsorbs metal ions to the magnesium hydroxide layer formed on the magnesium surface by the reaction of water and magnesium. And a method for separating metal ions, wherein the metal ions are separated from the waste water. In addition, as a waste treatment method (Patent Document 3), “a method of adding and mixing an adsorbent containing magnesium or a magnesium alloy as a main component to waste, or water and hydraulic properties in the obtained mixture” Wastes such as sludge and ducts containing harmful metals are treated by adding a solidifying material and kneading, and by adding water and cement to the resulting mixture, kneading and then solidifying. In this case, a treatment method is disclosed in which harmful metals and the like are eluted and there is no risk of causing secondary pollution.
Furthermore, as a wastewater treatment apparatus that has been put to practical use, (Patent Document 4) states that “when a low-concentration wastewater treatment is performed using a separation material mainly composed of magnesium or a magnesium alloy, the surface of the separation material The reaction-inhibiting substances such as hydrogen gas and metal hydroxide generated in the reactor are continuously peeled off, allowing the target wastewater to contact the magnesium surface, which is the separator, stably, and the metal ions in the wastewater can be removed for a long time. A metal ion-containing wastewater treatment apparatus that can be continuously separated is disclosed.

JP 2005-13976 A JP 2006-167564 A JP 2006-181432 A JP 2012-106221 A

However, the above conventional technique has the following problems.
(1) The technology disclosed in (Patent Document 4) is a practical application of (Patent Document 1) to (Patent Document 3), but it is continuously performed while rotating a tilted drum and treating sewage. As a result, a new surface is formed on the surface of the separating material by co-rubbing the separating material in the liquid, and purification of sewage can be expected. However, since water is adhered to the surface of the separating material, As a lubricant, it is difficult for the separating material to be rubbed together, it takes time to regenerate, and it is difficult to improve the processing efficiency.
(2) In addition, efficient treatment of wastewater containing a large amount of arsenic has been desired.

  The present invention solves the above-described conventional problems, and is excellent in resource saving because the separator is circulated and used. When a metal separator such as magnesium or iron is used, the water is efficiently removed. Providing a water purifier that can be rubbed together and that can adjust the regeneration rate of the separation material according to the quality of the raw water, and that excels in water purification efficiency, maintainability, purification stability, and water purification capacity. Objective.

Means for solving the problems, and actions and effects obtained thereby

In order to solve the above conventional problems, the water purifier of the present invention has the following configuration.
The water purifier according to claim 1 of the present invention includes a water treatment tank, an inner cylinder portion formed inside the water treatment tank, and an outer cylinder portion and the inner cylinder portion of the water treatment tank. A water purification unit formed in the upper part, a separation material supply unit disposed above the water purification unit, an upper raw water supply unit disposed above the water purification unit and / or a lower side of the outer cylinder unit and the lower raw water supply which is arranged, and the inner cylindrical portion bottom to the water purification unit and communicating separation material formed and raw water inlet, than the height of the raw water of the liquid surface of the inner cylindrical portion A separation material discharge part for discharging a separation material made of metal or alloy capable of adsorbing metal ions contained in the raw water from the upper side to the water purification part, and a central axis of the inner cylinder part A screw rotatably disposed in the motor, a drive unit that rotates the screw, and a cylinder disposed in the outer cylinder It has a water purifier discharge portion that, the arrangement comprising a.
With this configuration, the following operations and effects can be obtained.
(1) Since the raw water and the separating material come into contact with each other in the water purification section, metal ions such as iron, manganese, zinc, boron, hexavalent chromium, arsenic and nickel in the raw water are adsorbed on the separating material, Metal ions can be separated (removed).
(2) Since it has an inner cylinder part in which a screw is arranged, and the inner cylinder part and the water purification part communicate with each other via the introduction port, the inside of the inner cylinder part from the introduction port formed on the bottom side of the inner cylinder part Separation material and water are introduced by the lifting force of the screw, etc., the separation material flows by the rotation of the screw, collides and contacts each other, and the separation material is pumped up to the separation material discharge part while repeatedly adsorbing and rubbing metal ions. Since it is discharged to the water purification unit, the contact efficiency between the raw water and the separating material is good. Also, when metal ions are adsorbed by the metal hydroxide coating on the surface of the separating material, the coating is peeled off by rubbing, and the separating material is transferred from the separating material discharge section to the water purification section with a new surface formed on the surface. Since it falls and is supplied to the inner cylinder from the inlet with the raw water, even if the water purification device is used for a long time, the separation and separation performance of metal ions in the raw water by the separating material is unlikely to deteriorate, and the separating material is circulated for use. Therefore, it is excellent in resource saving and can process a large amount of raw water in a short time.
(3) Since the screw is provided inside the inner cylinder part, water falls from the gap between the screw and the inner cylinder part, and only the separation material can be pumped up to the separation material discharge part. Therefore, when metal ions are adsorbed by the metal hydroxide coating on the surface of the separating material, the separating material can be rubbed together in a drained state, so that the co-rubbing effect of the separating material can be obtained more easily than in water. A new surface can be stably formed on the surface of the substrate.
(4) Since the separation material and the raw water are agitated by the rotation of the screw, the separation material and the raw water are easily in contact with each other, and the contact efficiency between the metal ions in the raw water and the separation material is high. Since metal ions in raw water can be adsorbed and separated, and chemicals do not need to be used, the safety of the water after treatment is excellent.
(5) The generation amount of the peeled material that peels off from the surface of the separating material by co-rubbing is small, and there is almost no maintenance associated with the treatment of the precipitate (sludge), and the maintenance property is excellent.
(6) Since the separating material discharge part is provided at a position higher than the level of the raw water in the inner cylinder part, it can be efficiently rubbed together with moisture removed, so the regeneration efficiency of the separating material surface is improved. Excellent.

Here, the raw water introduced into the water purification equipment includes wastewater from plating plants, metal smelting plants, waste incinerators, old mine wastewater from hot water and hot air deposits, hot water from hot springs and geothermal power plants, etc. There are groundwater, industrial waste, municipal waste incineration ash / fly ash, leachable water from electric furnace steelmaking dust, etc., well water, civil engineering, construction, waterworks factory springs, etc., but water containing metal ions There is no particular limitation.
Metal ions contained in raw water include metal ions such as iron, manganese, zinc, boron, chromium, arsenic, nickel, cadmium, mercury, lead, aluminum, tin, antimony, and cobalt, as well as metal ions that are harmful to the human body. Etc. It can also be effectively applied to organic wastewater.

As the separating material, materials mainly made of magnesium or magnesium alloy are used. However, if metal ions contained in raw water can be adsorbed, metals other than magnesium (highly ionized) or alloys are used. May be. Among them, the separation material containing magnesium adsorbs metal ions to the hydroxide film produced by contact with water, and therefore can be reused simply by removing the film by co-rubbing to form a new surface. It is. Further, when the raw water contains a large amount of arsenic, a separating material containing iron may be used.
The separator containing magnesium is not particularly limited as long as it contains 50 wt% or more of magnesium. Pure magnesium or a magnesium alloy (AZ31C, AZ61A, AZ80A, AZ91D, AM50A, AM60B, AM100A based on the ASTM symbol) , EZ33, ZE41, QE22A, WE54A, WE43, ZK51A, ZK60A, ZK61A, etc.), magnesium alloy waste materials used as housings for personal computers and mobile phones, and the like can be used. In particular, magnesium alloy waste is expected to be produced in large quantities in the future, and is suitable from the viewpoint of economic and environmental impact.
In addition, the shape of the separating material is not particularly limited, and a shape such as granular, fibrous, chip-like, and flake-like shape is selected. Although the size of the separating material depends on the size of the inner cylinder part, in order to improve the contact efficiency with the raw water, a material having a small volume and a large surface area is preferable. For example, chip-like pure magnesium having a thickness of 0.5 × width 3 × length 10 mm is used.
As the separating material containing iron, iron particles such as cast iron are used.

The shape of the inner cylinder portion is preferably a substantially cylindrical shape, but may be a polygonal cylinder shape or the like. The inner cylinder part may be provided at one place inside the outer cylinder part, or a plurality of inner cylinder parts may be provided. Further, the position of the inner cylinder part can be appropriately changed inside the outer cylinder part. For example, they may be installed side by side at equal intervals, or may be installed in a biased manner. By providing a plurality of inner cylinder parts inside the outer cylinder part, the contact amount with the circulating separation material is increased, the treatment efficiency in one water purifier is excellent, the treatment amount can be increased, and the purification ability is excellent. In addition, the inner cylinder part can be appropriately arranged in accordance with the internal volume of the outer cylinder part and the target processing amount, and the portion with little convection and the part where liquid channeling occurs can be reduced, so Excellent performance. An introduction port is appropriately provided at the lower part of the inner cylinder part. However, since a separating material may be deposited on a portion other than the introduction port, when there are a plurality of inner cylinder parts, the introduction port of the adjacent inner cylinder part is provided. By shifting the position, there is no separating material to be deposited, the processing efficiency is excellent, and there is no separating material to be deposited without being used, so that resource saving is excellent.
In addition, when a plurality of inner cylinder parts are provided inside the outer cylinder part and the inside of the outer cylinder part is partitioned by a partition for each inner cylinder part, a raw water supply part is provided in one of the sections separated by the respective partition walls. It can also be processed to flow in order. In this case, since raw water can be repeatedly contacted with a separating material according to the number of inner cylinder parts in the water purification part around each inner cylinder part, it is excellent in the quality of purified water.

  The position of the inlet formed in the inner cylinder part is preferably formed on the bottom side of the inner cylinder part at the same or above the position of the blades at the lower end of the screw, considering the circulation of the separating material. Further, the size and shape of the inlet are not particularly limited as long as the separating material can be introduced.

  You may form a draining part in an inner cylinder part. The position of the draining part is not particularly limited as long as it is on the upper side of the introduction port. Also, the shape and size of the draining part is not particularly limited, but in order to prevent the separating material from being discharged from the draining part to the water purification part, an expanded metal having an opening with a size that makes it difficult for the separating material to pass through, It is preferable to provide a net body (net tube) such as a punching metal, a metal net, or a filter. The material of the net (net tube) is not particularly limited as long as it is a material with little metal ion elution, and a metal, an alloy, a synthetic resin, or the like can be selected. Moreover, the manufacturing method of a net (net cylinder) is not particularly limited. By forming the draining portion, water can be introduced from the inlet to the inside of the inner cylindrical portion, and water circulation can be promoted to discharge water from the draining portion. Excellent contact of separating material.

The position of the separating material discharge part formed in the inner cylinder part is not particularly limited as long as it is on the upper side of the inner cylinder part, and the size and shape are not particularly limited. However, when a metal-based separation material containing magnesium is used as the separation material, the separation material discharge portion is provided at a position higher than the height of the liquid surface of the inner cylinder portion. Thereby, since it can rub efficiently together in the state which cut | disconnected the water | moisture content, it is excellent in the reproduction | regeneration efficiency of the separating material surface.
When metal ions are adsorbed by the metal hydroxide coating on the surface of the separating material, depending on conditions such as the number of rotations of the rotating shaft, the inner peripheral surface of the inner cylinder portion on which the separating material discharge part is formed, such as a baffle plate By providing the discharge adjusting plate, the co-rubbing effect of the separating material can be enhanced.

The screw is not particularly limited as long as it has a propeller-like or spiral blade formed on the rotating shaft.
Further, the rotational axis of the screw may be rotated slightly eccentric in the horizontal direction with respect to the central axis of the inner cylinder portion. Oscillation caused by eccentricity of the rotating shaft complicates the movement of the separating material on the blades of the screw, and the collision between the separating materials becomes active, improving the contact efficiency and co-friction effect between the raw water and the separating material. Can do. Further, the separation material can be prevented from being clogged between the blades of the screw and the inner cylinder portion, the operation can be stabilized for a long time, and the separation material can be prevented from being pulverized.

When the screw includes a spiral blade, it is preferable that the spiral blade is continuously formed from the lower part of the introduction port to at least the separating material discharge portion. This is because water acts like a lubricant in water, so the co-friction effect due to the contact between the separating materials is not high, but by forming up to the separating material discharge part, the separating material on the spiral blades can discharge the separating material. Since water falls from the gap between the end of the spiral blade and the inner peripheral surface of the inner cylinder part while being carried to the part, the separating material can be rubbed together in a drained state, and the co-rubbing effect can be enhanced. Because.
Further, a notch may be formed on the surface of the blade of the screw, or irregularities may be formed by fixing a foreign matter. By forming the irregularities, the movement of the separating material moving on the blades of the screw is complicated, the contact efficiency between the separating material and water is increased, the separating materials are easily contacted, and the co-rubbing effect can be enhanced. .

A drive part will not be specifically limited if a screw can be rotated, A motor, an engine, etc. can be used.
The number of rotations of the screw by the drive unit can be freely selected according to the inclination angle of the blades of the screw (including the pitch of the blades when the blades are spiral), the amount of separating material, and the like.

In the purified water (treated water) from which the metal ions have been removed from the raw water, there may be a case where sludge such as a separation material or a separated material from the surface of the separation material after co-rubbing is mixed. Therefore, you may provide the filter which removes sludge in a purified water discharge part, or may provide the sedimentation tank for carrying out precipitation separation of sludge downstream of a water purifier. Moreover, if a check valve or a regulating valve (damper) is provided in the purified water discharge part, the cleaning of the filter and the amount of drainage can be adjusted.
Moreover, you may equip the bottom part of the water treatment tank of a water purifier with a water supply / drain pipe. Thereby, when the water purifier is used for a long period of time, sludge such as exfoliated material deposited in the water purifier can be easily discharged, and the water treatment tank can be easily cleaned.

  The material used for the inner cylinder part and screw constituting the water purifier is not particularly limited as long as it is a material with little elution of metal ions adsorbed and separated by the separating material. Resin, stainless steel, etc. can be selected.

The method for supplying the separation material from the separation material supply unit is not particularly limited, and a hopper or the like can be used.
The upper raw water supply unit and the lower raw water supply unit need only have at least one of them, and can be appropriately selected to supply raw water from either one or both.
Further, the separation material supply unit and the upper raw water supply unit may be arranged so that the separation material and the raw water are supplied above the water surface, or may be appropriately supplied below the water surface of the water purification unit by a pipe or the like. You can also
The lower raw water supply part may supply raw water between the outer cylinder part and the inner cylinder part, or may supply raw water directly to the inside of the inner cylinder part by communicating with the inner cylinder part.
In addition, as a raw material which forms an upper raw | natural water supply part and a lower raw | natural water supply part, a synthetic resin, stainless steel, etc. can be selected similarly to an inner cylinder part.

Invention of Claim 2 is a water purifier of Claim 1, Comprising: The said lower raw | natural water supply part has the structure which penetrates the said outer cylinder part and connects with the said inner cylinder part.
With this configuration, the following operations and effects can be obtained in addition to the operations and effects of the first aspect.
(1) Since the lower raw water supply part passes through the outer cylinder part and communicates with the inner cylinder part, the raw water is directly supplied to the inside of the inner cylinder part, so that the raw water may be mixed into the treated purified water. Without being treated, it can be prevented from being discharged from the purified water discharge section, and the purified water from which metal ions have been removed can be stably obtained with a high removal rate.

  Here, when the lower raw water supply section is communicated with the inner cylinder section, the tip (exit) of the lower raw water supply section may be connected to the inner cylinder section and opened at the inner peripheral surface of the inner cylinder section. Moreover, you may make the front-end | tip part (exit) of a lower raw | natural water water supply part protrude inside from the internal peripheral surface of an inner cylinder part.

Invention of Claim 3 is a water purifier of Claim 1 or 2, Comprising: It has the structure provided with the gradient part which goes down to the said inlet in the bottom part of the said water treatment tank.
With this configuration, the following actions and effects can be obtained in addition to the actions and effects of the first or second aspect.
(1) Since the water treatment tank includes a gradient portion that descends from the inner peripheral surface side of the outer cylinder portion toward the inlet on the bottom portion side of the inner cylinder portion, the separation material supplied to the water purification section flows and flows It is easy to be introduced into the introduction port of the cylinder part, and accumulation in the water purification part is avoided. Moreover, since the separating material can be efficiently rubbed in the inner cylinder part by flowing to the inner cylinder part without depositing the separating material in the water purification unit, it is possible to prevent the adsorption / separation ability of the separating material from being lowered. it can.

Here, the gradient portion only needs to have a gradient that allows the separating material to flow into the inlet.
In addition, the method of forming the gradient portion is not particularly limited. For example, the bottom surface of the water treatment tank may be formed in an inverted conical shape, or an opening having a size that makes it difficult for the separating material to pass through the bottom portion of the water treatment tank. A filter, an expanded metal, a punching metal, a wire mesh, or the like having a taper shape may be formed.
When the inclination angle of the gradient portion is 5 degrees or more with respect to the horizontal plane, the separation material does not remain deposited on the gradient portion, and the separation material can be stably introduced from the inlet to the inner cylinder portion. . Therefore, when metal ions are adsorbed by the metal hydroxide coating on the surface of the separation material, the separation material on which the new surface is not formed does not collect at the bottom of the water purification unit, thereby preventing the treatment capacity of the water purification device from being reduced. be able to.
When the inclination angle of the gradient portion is smaller than 5 degrees, the supplied separation material is difficult to flow toward the inlet, depending on the number of rotations of the screw and the amount of raw water, and the separation material is supplied to the inner cylinder portion. Therefore, the separation material is not easily rubbed, and the adsorption and separation efficiency of metal ions from the raw water is likely to decrease, which is not preferable. When it exceeds 75 degrees, the separating material moves toward the inlet at once, and the inlet is clogged and the fluidity of the separating material is likely to be hindered. It is not preferable because the adsorption and separation efficiency of metal ions tends to decrease.

Invention of Claim 4 is the water purifier of any one of Claim 1 thru | or 3 , Comprising: The drainer formed between the said inlet of the said inner cylinder part, and the said separation material discharge part It has the structure provided with a part .
With this configuration, in addition to the operation and effect of any one of claims 1 to 3 , the following operation and effect can be obtained.
(1) By having a draining part formed between the inlet of the inner cylinder part and the separating material discharge part, the separating material is pumped up further from the draining part by a screw. For this reason, since the separating material is partially rubbed after removing water on the surface to some extent, a co-rubbing effect due to collision between the separating materials is more easily obtained than in water.

Invention of Claim 5 is the water purifier of any one of Claim 1 thru | or 4, Comprising: The said separation material discharge part is arrange | positioned at the upper end side of the said inner cylinder part, and a discharge outlet is in the center part. It has the structure provided with the formed discharge adjustment board.
With this configuration, in addition to the operations and effects of claims 1 to 4, the following operations and effects can be obtained.
(1) Since the discharge adjustment plate is provided, the discharge amount of the separation material discharged from the separation material discharge portion can be adjusted according to the size of the discharge port and the separation material is disposed between the discharge adjustment plate and the blade of the screw. Since it can be pressed down, the co-rubbing effect can be enhanced and the regeneration rate of the separating material can be adjusted by the size and shape of the discharge adjusting plate.

Here, the discharge adjusting plate is not particularly limited as long as it can adjust the discharge amount of the separation material from the discharge port.
The material of the discharge adjustment plate is not particularly limited as long as metal ions are not eluted, and the same material as that of the inner cylinder portion or the like can be used.
The shape of the discharge port is not particularly limited, and may be any shape such as a circle, an ellipse, or a polygon.

Invention of Claim 6 is a water purifier of any one of Claim 1 thru | or 5, Comprising: Ratio D / d of the outer diameter D of the blade | wing of the said screw, and the diameter d of the rotating shaft of the said screw = 2 to 10 and the blade has an inclination angle of 5 to 60 degrees with respect to a plane perpendicular to the rotation axis.
With this configuration, in addition to the functions and effects of claims 1 to 5, the following functions and effects can be obtained.
(1) Since the ratio D / d = 2-10 of the outer diameter D of the screw blade and the diameter d of the rotating shaft is 2 to 10, the size of the blade is well balanced with respect to the rotating shaft, and the screw blade can pump up. The amount of the separating material that can be produced is not reduced too much, and the separating material can be contacted and collided efficiently, and the rotating shaft has sufficient structural strength, so that the water purifier can be used stably.
(2) Since the inclination angle of the blades of the screw is 5-60 degrees with respect to the plane perpendicular to the rotation axis, the separation material can be pumped up to the separation material discharge part and the separation material is less refined . Therefore, by adjusting the number of rotations of the screw, it is possible to easily adjust the circulation amount of the separation material in accordance with the quality of raw water and the like, so that resource saving is excellent.

  Here, when the ratio D / d between the outer diameter D of the screw blade and the diameter d of the rotary shaft is smaller than 2, the width of the screw blade becomes narrow, and the separation material that can be pumped up depending on the rotational speed of the rotary shaft. This is not preferable because the amount is reduced, the amount of the separation material supplied to the water purification unit is reduced, and the treatment efficiency of the raw water is lowered. Further, if D / d is larger than 10, the width of the blade of the screw becomes wide, and the amount of separating material that can be pumped increases, but the rotating shaft becomes thin and the structural strength of the rotating shaft becomes difficult to obtain. Absent.

When the inclination angle of the blade of the screw is smaller than 5 degrees with respect to the plane perpendicular to the rotation axis, it is easy to scoop the separating material from the bottom of the water treatment tank, and depending on the rotational speed of the screw, the separating material is pumped up to the upper part of the inner cylinder. For this reason, the time for the separation material to collide and the time for co-rubbing to the separation material is increased, so that the co-rubbing effect of the separation material is enhanced and the water purification effect is enhanced. If the angle exceeds 60 degrees, the separating material cannot be pumped up depending on the number of rotations of the screw, and the separating material cannot be circulated between the inner cylinder portion and the water purification unit. When the number of rotations of the screw is increased, the separating material is rubbed more than necessary, and the separating material is likely to be finely divided.
Moreover, when the blade | wing of a screw is a spiral blade, the pitch of a blade | wing is suitably selected according to the inclination angle of a spiral blade, the magnitude | size of a water purifier, etc.

Invention of Claim 7 is a water purifier of any one of Claim 1 thru | or 6, Comprising: The said rotating shaft of the said screw is 0.1-3 mm with respect to the central axis of the said inner cylinder part. It has the structure arrange | positioned so that it may decenter.
With this configuration, in addition to the operations and effects of claims 1 to 6, the following operations and effects can be obtained.
(1) Since the rotational axis of the screw is arranged to be eccentric by 0.1 to 3 mm with respect to the central axis of the inner cylinder portion, the separating material and raw water are easily stirred, and the separating materials collide with each other. While being able to make it easy to rub, it can prevent that a separating material is clogged between an inner peripheral surface of a screw and an inner cylinder part, and can realize a continuous operation.
(2) Since the rotating shaft rotates eccentrically, the separation material can be prevented from clogging in the gap between the screw blades and the inner peripheral wall of the inner cylinder, and the operation can be stabilized for a long period of time. Can be prevented.

Here, if the amount of eccentricity of the rotating shaft is smaller than 0.1 mm, it is not preferable because stirring of the separating material and raw water due to the eccentricity is difficult to occur. Also, if it becomes larger than 3 mm, the gap between the inner peripheral surface of the inner cylinder part and the end of the blade of the screw becomes large, and the separation material is easily dropped from the gap, so that the separation material is between the inner cylinder part and the water purification part. Is not preferable because the amount of the separating material to be pumped is reduced and the processing efficiency is likely to be lowered.
You may form the lower end part of a rotating shaft in a free end. Thereby, rotation of a rotating shaft becomes easy to decenter. When the runout of the rotary shaft due to eccentricity becomes too large, the runout of the rotary shaft may be suppressed using a bearing or the like.

Invention of Claim 8 is the water purifier of any one of Claims 1 thru | or 7, Comprising: The clearance gap between the internal peripheral surface of the said inner cylinder part and the edge part of the said blade | wing is 0-10 mm. It has the composition which is.
With this configuration, in addition to the operations and effects of claims 1 to 7, the following operations and effects can be obtained.
(1) Since the gap between the inner peripheral surface of the inner cylinder portion and the end portion of the screw blade is 0.1 to 10 mm, the separation material is the gap between the end portion of the screw blade and the inner peripheral surface of the inner tube portion. Therefore, it is difficult to fall to the bottom of the inner cylinder portion, and the separating material can be efficiently pumped up to the separating material discharge portion. In addition, when metal ions are adsorbed by the metal hydroxide coating on the surface of the separating material, the surface of the separating material is rubbed even in the gap between the end of the screw blade and the inner cylindrical portion, so it is difficult to obtain a co-rubbing effect. It is easy to form a new surface on the surface of the separating material even in water, and the stability of the apparatus and the treatment efficiency of raw water are excellent.

Here, the clearance between the inner peripheral surface of the inner cylinder portion and the end portion of the blade of the screw is selected to be 0.1 to 10 mm. If the gap is smaller than 0.1 mm, the screw blades and the inner wall of the inner cylinder part are likely to come into contact with each other due to the swing of the rotating shaft, and the screw blades are likely to be damaged. Further, when the thickness is larger than 10 mm, the separation material easily falls from between the screw and the inner cylinder portion, and the separation material is difficult to be discharged into the water purification unit formed between the inner cylinder portion and the outer cylinder portion. When the metal hydroxide is adsorbed by the metal hydroxide coating on the surface of the separating material, the efficiency is easily lowered, and the separating material is unlikely to collide with or come into contact with each other on the blade of the screw. Since it becomes difficult, it is not preferable.
However, when the gap approaches approximately 0 mm, the raw water supplied to the inner cylinder portion can be easily pumped, and the reaction time (contact time) of the separating material and the raw water can be lengthened. When it is high or contains harmful metal ions, the metal ions can be sufficiently removed, and the safety of purified water can be improved.
At this time, as a method of bringing the gap between the inner peripheral surface of the inner cylinder portion and the end portion of the screw blade close to approximately 0 mm, rubber, synthetic resin, or the like is placed on the edge side (end portion side) of the flat portion of the screw blade. A method of covering, a method of bonding an elastic body such as rubber to the edge side (end side) of the flat portion of the blade (lining), or the like can be used.
Moreover, as a method of preventing the separating material from falling from the gap between the inner peripheral surface of the inner cylinder portion and the end portion of the screw blade, a convex portion is provided on the edge side (end portion side) of the flat portion of the screw blade. A providing method or the like can be used.

  When the spiral blade is used as the blade of the screw, the pitch of the spiral blade may be different between the upper side and the lower side. With this configuration, since the pitch is different between the upper side and the lower side of the spiral blade, the deposition rate of the separation material on the spiral blade can be changed as the separation material is pumped up to the upper portion of the screw. Therefore, when metal ions are adsorbed by the metal hydroxide film on the surface of the separating material, the co-friction effect can be enhanced by changing the deposition rate, and the new surface is easily exposed on the surface of the separating material, and the raw water by the separating material is exposed. The adsorption and separation efficiency of metal ions is difficult to decrease, and it is excellent in maintenance and stability.

Invention of Claim 9 is a water purifier of any one of Claims 1 thru | or 8, Comprising: The said water purifier is the said water purifier, Between the said outer cylinder part and the said inner cylinder part Formed between the intermediate tube portion, the inner tube portion and the intermediate tube portion, the metal ion adsorbing portion formed between the inner tube portion and the intermediate tube portion, and the intermediate tube portion and the outer tube portion. An overflow portion, and an outlet of the separation material supply portion is opened above the metal ion adsorption portion.
With this configuration, in addition to the operations and effects of claims 1 to 8, the following operations and effects are provided.
(1) Since the outlet of the separation material supply part is opened above the metal ion adsorption part formed between the inner cylinder part and the intermediate cylinder part, the supplied separation material is at a position close to the introduction port. It is easy to precipitate and the separation material can be easily introduced from the introduction port into the inner cylinder portion.
(2) Since the overflow part is formed on the outer peripheral side of the metal ion adsorbing part, when the purified water (treated water) contains a separation material (sludge) from the separating material, it easily settles at the bottom of the overflow part. It becomes difficult to be discharged from the purified water discharge section. Therefore, it is possible to obtain purified water (treated water) that does not contain sludge without providing a water purification tank or the like for removing the peeled material downstream of the water purification apparatus, which is excellent in convenience.

Here, the intermediate cylinder part disposed between the outer cylinder part and the inner cylinder part is formed so as to surround the inner cylinder part, so that the water purification part is divided into a metal ion adsorption part and an overflow part, The shape is not limited to a cylindrical shape. An intermediate cylinder part having an arc-shaped cross section may be formed so as to surround at least the periphery of the inlet of the inner cylinder part, and the water purification part may be divided into a metal ion adsorption part and an overflow part.
Since the same material as that of the inner tube portion or the like can be used as the material of the intermediate tube portion, description thereof is omitted.

Invention of Claim 10 is a water purifier of Claim 9, Comprising : The said overflow part is a communicating pipe which connected the said draining part and the said intermediate cylinder part, The said intermediate cylinder part, and the said outer cylinder part And a weir part formed between the weir part and the intermediate cylinder part, and a borer weir formed on the weir part. doing.
With this configuration, in addition to the operation and effect of Claim 9, the following operation and effect can be obtained.
(1) Since the overflow part is communicated with the inside of the inner cylinder part by the communication pipe and includes a sedimentation separation part formed between the weir part and the intermediate cylinder part, it is separated from the separation material in the purified water (treated water). When the exfoliated material (sludge) or the like is included, the sludge is blocked by the weir part and separated (removed) by depositing on the bottom of the sedimentation separation part. Therefore, it becomes easy to maintain and manage the water purification apparatus without a separate filter, and is excellent in resource saving and maintenance.
(2) By providing the water supply / drainage valve on the bottom side of the sedimentation / separation part, sludge such as exfoliated material from the separating material settled on the sedimentation / separation part can be easily taken out from the water supply / drainage valve, and the maintainability is excellent.

Here, purified water (treated water) from which metal ions are separated (removed) in the inner cylinder portion flows into the overflow portion connected to the draining portion by the communication pipe, but is separated into the purified water (treated water). Since sludge such as exfoliated material from the surface of the material or separation material may be mixed, it is preferable to form a sedimentation part for sedimenting sludge at the bottom of the water treatment tank. The method for forming the precipitation part is not particularly limited as long as sludge in the purified water (treated water) can be precipitated, but an expanded metal or a punching metal having an opening of a size that makes it difficult for the separating material to pass through on the bottom side of the purified water part. A method of providing a wire mesh, a precipitation separation filter (mesh), or the like is preferably used. Furthermore, by providing a drainage valve or the like at the sludge sedimentation place, the sludge can be easily removed and the maintainability can be improved.
Moreover, it is preferable that a flooding part provides a roof part, such as an upper cover, in an upper end part. Thereby, when draining purified water from a water purifier, it becomes difficult to mix a separating material or the like from the upper end of the overflow portion.

  The water purification unit may be provided with a water passing part on the bottom side of the intermediate cylinder part so that the purified water discharged from the draining part flows into the water purification part.

Since the material of the dam part disposed between the intermediate cylinder part and the outer cylinder part can be the same material as that of the inner cylinder part or the like, description thereof will be omitted.
The borer weir is an opening formed in the lower part of the weir part, and traps sludge such as a separating material and its exfoliated material flowing into the overflow part and separates it from purified water. Thereby, sludge in the purified water (treated water) is easily removed, and purified water (treated water) with less impurities can be easily obtained without providing a filter or the like in the purified water discharge part.
A plurality of weir portions may be provided. By forming a plurality of weir portions, sludge in the purified water (treated water) is likely to settle in the overflow portion, and it is easy to remove the sludge. At this time, it is preferable that at least one of the dam portions includes a counterbore also in the upper portion of the dam portion.

Main part front sectional drawing of the water purifier of Embodiment 1 (A) Plan view of the water purifier of Embodiment 1 (b) AA sectional view taken along the line AA in FIG. The expanded sectional view of the inlet of the water purifier of Embodiment 1 Main part front sectional drawing of the water purifier of Embodiment 2. Schematic which shows the use condition of the water purifier of Embodiment 2. Front sectional view of main parts of the water purifier according to Embodiment 3. Schematic figure which shows the use condition of the water purifier of Embodiment 3. Schematic plane sectional view of the water purifier of Embodiment 4 Main part front sectional drawing of the water purifier of Embodiment 4. Schematic which shows the use condition of the water purifier of Embodiment 4.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to these embodiments.
(Embodiment 1)
1 is a front cross-sectional view of a main part of the water purifier of the first embodiment, FIG. 2 (a) is a plan view of the water purifier of the first embodiment, and FIG. 2 (b) is an AA of FIG. FIG. 3 is a cross-sectional view taken along line arrow, and FIG. 3 is an enlarged cross-sectional view of a main part of the inlet of the water purifier according to Embodiment 1.
1 and 2, X is the water purifier of the first embodiment, 1 is the water treatment tank of the water purifier X, 1a is the outer cylinder of the water treatment tank 1, 1b is the lid of the water treatment tank 1, and 1c is water. The bottom plate portion of the treatment tank 1, 2 is an inner cylindrical portion formed inside the water treatment tank 1, 2 a is formed on the inner peripheral surface of the inner cylindrical portion 2, and a separating material drained by a screw 8 described later is shared. The rubbing co-rubbed part, 2b is a support part for fixing the inner cylinder part 2 to the outer cylinder part 1a, 3 is formed between the inner cylinder part 2 and the outer cylinder part 1a of the water treatment tank 1, A water purification unit 4 in which the separation material comes into contact and metal ions are adsorbed / separated, 4 is a separation material supply unit formed on the lid 1b at the top of the water purification unit 3, and 4a is formed in the lid 1b at the top of the water purification unit 3. This is the upper raw water supply section. Upper raw water supply part 4a may be formed in the upper part of outer cylinder part 1a. 5 is an inlet for introducing raw water and separation material into the inner cylinder part 2 formed on the bottom side of the inner cylinder part 2, and 7 is a separation material discharge part formed on the upper side of the inner cylinder part 2. 8 is a screw rotatably inserted on a substantially central axis of the inner cylinder portion 2, 8a is a rotation shaft of the screw 8, 8b is a spiral blade formed spirally on the outer periphery of the rotation shaft 8a, and 9 is an inner cylinder. A water supply / drainage pipe formed on the bottom plate part 1c of the part 2, 9a is a water supply / drainage valve connected to the water supply / drainage pipe 9, 10 is a drive part arranged on the lid part 1b and rotates the screw 8, and 11 is an outer cylinder part. In FIG. 1a, a cylindrical purified water discharge unit 11a disposed on the water purification unit 3 side, 11a a filter disposed on the surface of the purified water discharge unit 11 facing the inner cylinder unit 2 side, and 12 supports the inner cylinder unit 2. The fitting groove part 13 formed in the bottom plate part 1c is disposed on the upper side of the water purification part 3 in the outer cylinder part 1a and is an overflow filter. 13a is disposed a tubular overflow pipe (drainage pipe).
In FIG. 3, θ ₁ is the angle of inclination of the spiral blade 8b with respect to the plane perpendicular to the rotation axis 8a, C is the gap between the inner peripheral surface of the inner cylinder 2 and the end of the spiral blade 8b, and D is the outer diameter of the spiral blade 8b. , D is the diameter of the rotating shaft 8a.

  Materials such as the outer cylinder part 1a, the inner cylinder part 2, and the screw 8 that are in contact with the purified water from which raw water or metal ions have been separated (removed) are not particularly limited as long as they are materials with little elution of metal ions that are adsorbed and separated, Materials such as metals, synthetic resins, and stainless steels mainly composed of titanium and aluminum are preferably used.

  When a gap is not formed between the end of the spiral blade 8b of the screw 8 and the inner peripheral surface of the inner cylinder part 2, a draining part is formed in the inner cylinder part 2 to cut off the water pumped up by the rotation of the screw 8. You may do it. The draining portion may have any configuration such as a slit or a hole as long as the water in the inner cylinder portion 2 can be discharged.

The screw 8 may be eccentric by 0.1 to 3 mm with respect to the central axis of the inner cylinder portion 2 in order to increase the contact efficiency of the separating material and raw water. Thereby, the quantity of the raw | natural water pumped up in the inner cylinder part 2 can be decreased, and draining can be performed efficiently on the upper side of the inner cylinder part 2. FIG. When the amount of eccentricity is smaller than 0.1 mm, it is not preferable because the separation material or raw water is not easily stirred by the eccentricity. Moreover, when the amount of eccentricity is larger than 3 mm, the gap between the inner peripheral surface of the inner cylinder portion 2 and the end of the spiral blade 8b is increased, and the separation material is easily dropped from the gap, so that the separation material is the inner cylinder portion. This is not preferable because it is difficult to circulate between the water purification unit 2 and the water purification unit 3, and the amount of the separating material that can be pumped is reduced, and the processing efficiency is easily lowered.
Further, the rotation speed of the screw 8 driven by the drive unit 10 can be freely selected according to the inclination angle of the spiral blade 8b of the screw 8, the pitch of the spiral blade 8b, the amount of the separating material, and the like.

In order to enhance the co-rubbing effect of the separating material, the spiral blade 8b may be formed with notches on the surface, or irregularities may be formed by fixing foreign matters.
As shown in FIG. 3, the inclination angle θ ₁ of the spiral blade 8b (an angle with respect to a plane perpendicular to the rotation axis 8a) is 5 to 60 degrees. If θ ₁ is smaller than 5 degrees with respect to a plane perpendicular to the rotation axis 8a, it is easy to scoop the separating material from the bottom of the water treatment tank 1, but the time for pumping the separating material up to the upper part of the co-rubbed portion 2a increases. Since the time for which the separating material collides / contacts becomes longer, when the metal ions are adsorbed by the metal hydroxide coating on the surface of the separating material, the co-friction effect of the separating material is enhanced, but the separating material is easily made finer. Therefore, it is not preferable. On the other hand, if the angle exceeds 60 degrees, the separating material cannot be pumped up depending on the number of rotations of the screw 8, and the separating material cannot be circulated between the inner tube portion 2 and the water purification unit 3. When the number of rotations of the screw 8 is increased in order to pump up, the separating material is rubbed more than necessary, and the separating material is likely to be finely divided, which is not preferable.
The pitch of the spiral blade 8b is in accordance with the size of the inclination angle theta ₁ and apparatus of the helical blade 8b, are set appropriately.
The lower end portion of the spiral blade 8 b has a gap that does not contact the bottom plate portion 1 c of the water treatment tank 1.

The clearance C between the inner peripheral surface of the inner cylinder 2 and the end of the spiral blade 8b is preferably 0.1 to 10 mm. If the gap C is smaller than 0.1 mm, the spiral blade 8b and the inner peripheral surface of the inner cylinder portion 2 are likely to come into contact with each other due to the swing of the rotary shaft 8a, and the spiral blade 8b is likely to be damaged. On the other hand, if it is larger than 10 mm, the gap C between the spiral blade 8b and the inner peripheral surface of the inner cylinder portion 2 becomes larger, and the separation material is likely to fall from the gap, and the separation material introduced into the inner cylinder portion 2 is purified water. When the metal ions are adsorbed by the metal hydroxide coating on the surface of the separating material, the separating material collides and contacts on the spiral blade 8b. It is difficult to obtain the co-rubbing effect of the separating material, which is not preferable.
However, when the gap C approaches approximately 0 mm, the raw water supplied to the inner cylinder part 2 can be easily pumped up, and the reaction time of the separating material and the raw water can be lengthened, so that the raw water contains harmful metal ions, etc. In addition, water purification can be increased.
In order to set the gap C to 0 mm, a method of bonding a cover ring (lining) made of rubber or synthetic resin to the edge side (end side) of the flat portion of the spiral blade 8b of the screw 8 is used.

  The ratio of the outer diameter D of the spiral blade 8b and the diameter d of the rotating shaft 8a is preferably D / d = 2-10. When D / d is smaller than 2, the width of the spiral blade 8b of the screw 8 is narrowed, and the amount of the separating material that can be pumped down depending on the number of rotations of the screw 8 is reduced. Since the amount decreases, the treatment efficiency of the raw water decreases, which is not preferable. If D / d is larger than 10, the width of the spiral blade 8b of the screw 8 is widened, so that the amount of separating material that can be pumped is increased, but the rotating shaft 8a is thinned, and the structural strength of the rotating shaft 8a is increased. Since it becomes difficult to obtain, it is not preferable.

The shape of the filter 11a disposed in the purified water discharge unit 11 is not particularly limited, and the material is not particularly limited as long as the metal ions are less eluted.
Further, the filter 11a may be disposed on the inner peripheral wall side of the outer cylindrical portion 1a as in the present embodiment, but the purified water discharge portion 11 is fixed to the outer peripheral surface of the outer cylindrical portion 1a. The filter 11a may be disposed on the outer peripheral surface side of the outer cylinder portion 1a. The method for fixing the filter 11a is not particularly limited.
Moreover, when the purified water discharge part 11 is provided in the upper part side of the outer cylinder part 1a, the filter 11a does not need to be provided. Moreover, in order to remove the sludge in the purified water, a sedimentation tank for causing the sludge to settle and separate may be provided downstream of the water purification apparatus X.

  The purified water discharge unit 11 may be provided with a backwash device (not shown). Thereby, clogging etc. of the filter 11a can be easily removed, and maintainability can be improved.

About the water purifier X of this Embodiment 1 comprised as mentioned above, the water purification process at the time of using the separating material which mainly consists of magnesium or a magnesium alloy is demonstrated using FIG.
First, a separation material mainly composed of magnesium or a magnesium alloy having an outer shape of several mm is introduced from the separation material supply unit 4 formed in the lid 1b of the water treatment tank 1, and the separation material is deposited on the bottom of the water purification unit 3. Then, by introducing the raw water from the upper raw water supply unit 4a, a metal hydroxide is generated on the surface of the separating material, and metal ions in the raw water are adsorbed on the metal hydroxide.
Next, the raw water from which the metal ions have been removed is discharged from the purified water discharge unit 11 as purified water, and the separation material that has adsorbed the metal ions on the surface is introduced from the introduction port 5 into the inner cylinder part 2.
Next, the separating material introduced into the inner cylinder part 2 is pushed up to the upper part of the co-rubbing part 2 a by the rotation of the screw 8, and the co-rubbing part 2 a from the gap between the screw 8 and the inner peripheral surface of the inner cylinder part 2. The separators are rubbed together while the water is cut. The separating material having the reclaimed surface exposed on the surface is again supplied from the separating material discharge section 7 to the water purification section 3 and comes into contact with the injected raw water. The adsorption of metal ions on the magnesium exposed surface of the separation material is extremely fast, and the metal ions in the raw water in contact with the regeneration surface of the separation material are adsorbed rapidly. Therefore, since only the purified water from which the metal ions have been removed can be discharged from the purified water discharge unit 11, continuous operation is possible. Depending on the combination of the type of separation material and the metal ions in the raw water and the concentration of the raw water, the reaction may be slow and metal ions may not be immediately adsorbed. In that case, only purified water is discharged by batch treatment. be able to. The separating material descends while being dispersed to the sedimentation zone where the separating material at the bottom of the water purification unit 3 is deposited, and is again introduced into the inlet 5 together with the raw water while reacting with a small amount of unadsorbed metal ions in the raw water.
Here, it is preferable that the separation material supplied to the water purification unit 3 is supplied in an amount such that a certain amount is deposited on the bottom of the water purification unit 3 in accordance with conditions such as the rotational speed of the screw 8 and the quality of the raw water.

As mentioned above, since the water purifier X of this Embodiment 1 is comprised, the following effects are obtained.
(1) Since the raw water is brought into contact with a separating material made of magnesium or magnesium alloy and stirred in the inner cylinder portion 2, iron, manganese, zinc, boron, hexavalent chromium, arsenic, Metal ions such as nickel are adsorbed, and the metal ions can be separated (removed) from the raw water.
(2) Since it has the inner cylinder part 2 in which the screw 8 is disposed and the inner cylinder part 2 and the water purification part 3 communicate with each other through the introduction port 5, the inner cylinder part 2 is formed on the bottom side of the inner cylinder part 2. Separation material and water are introduced from the inlet 5 into the co-rubbing portion 2a, and the separation material flows as the spiral blade 8b rotates, colliding and contacting each other, and the separation material repeats adsorption and co-rubbing of metal ions. Since it is pumped up to the separating material discharge part 7 and discharged to the water purification part 3, the contact efficiency of raw | natural water and a separating material is good. Further, when metal ions are adsorbed by the metal hydroxide coating on the surface of the separating material, the coating is peeled off by co-rubbing, and the separating material is purified from the separating material discharge section 7 with a regenerated surface formed on the surface. Since it falls to the part 3 and is supplied from the introduction port 5 together with the raw water to the inner cylinder part 2, even if the water purification device is used for a long period of time, the separation and separation performance of the metal ions in the raw water by the separating material is unlikely to deteriorate. Since it can be used in a circulating manner, it is excellent in resource saving and can process a large amount of raw water in a short time.
(3) Since the screw 8 is provided inside the inner cylinder part 2, water falls from the gap C between the screw 8 and the inner cylinder part 2, and only the separation material can be pumped up to the separation material discharge part 7. As a result, since the separating material can be rubbed together in the drained state, the co-rubbing effect of the separating material can be obtained more easily than in water, and a regenerated surface can be stably formed on the surface of the separating material.
(4) Since the separation material and raw water are agitated by the rotation of the screw 8, the separation material and the raw water are easily brought into contact with each other, and the contact efficiency between the metal ions in the raw water and the separation material is high. The metal ions in the raw water can be adsorbed and separated, and it is not necessary to use industrial chemicals.
(5) The generation amount of the peeled material that peels from the surface of the separating material by co-rubbing is small, the maintenance associated with the treatment of the precipitate (sludge) is easy, and the maintainability is excellent.
(6) Since the ratio D / d = 2-10 of the outer diameter D of the spiral blade 8b and the diameter d of the rotary shaft 8a is 2 to 10, the sizes of the rotary shaft 8a and the spiral blade 8b are well balanced, and the spiral blade 8b pumps up. The amount of the separating material that can be used is not excessively reduced, the separating material and the raw water are efficiently contacted, and the rotating shaft 8a has sufficient structural strength, so that the water purifier X can be used stably.
(7) Since the inclination angle θ ₁ of the spiral blade 8b is 5 to 60 degrees with respect to the plane perpendicular to the rotation shaft 8a, the separation material discharge unit 7 is separated even if the rotational speed of the screw 8 is relatively low. The material can be pumped up, and the circulation amount of the separation material can be easily adjusted by adjusting the rotational speed of the rotating shaft 8a. Therefore, a separating material can be used efficiently according to the quality of raw water, and resource saving is excellent.
(8) When the screw 8 rotates with an eccentricity of 0.1 to 3 mm with respect to the central axis of the inner cylinder portion 2, the swinging motion of the screw 8 is also added, so that the separating material and raw water are easily stirred and separated. The materials can easily collide with each other and can be easily rubbed together, and the separation material can be prevented from clogging between the spiral blade 8b and the inner peripheral surface of the inner cylinder portion 2, thereby realizing continuous operation.
(9) Since the gap C between the inner peripheral surface of the inner cylindrical portion 2 and the end portion of the spiral blade 8b is 0.1 to 10 mm, the separating material is the end portion of the spiral blade 8b and the inner peripheral surface of the inner cylindrical portion 2. Therefore, it is difficult to drop from the gap to the bottom of the co-rubbed portion 2a, and the separating material can be efficiently pumped up to the separating material discharge portion 7. Further, when metal ions are adsorbed by the metal hydroxide coating on the surface of the separating material, the surface of the separating material is rubbed even in the gap between the end of the spiral blade 8b and the inner peripheral surface of the inner cylinder portion 2, so Even in water where it is difficult to obtain an effect, a new surface is easily formed on the surface of the separation material, and the stability of the apparatus and the treatment efficiency of raw water are excellent.

(Embodiment 2)
Hereinafter, the water purifier of Embodiment 2 will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the thing similar to Embodiment 1, and description is abbreviate | omitted.
FIG. 4 is a front sectional view of a principal part of the water purifier of the second embodiment, and FIG. 5 is a schematic diagram showing a use state of the water purifier of the second embodiment.
In FIG. 4, Y is the water purifier of the second embodiment, 20 is the water treatment tank of the water purifier Y, 20a is the outer cylinder of the water treatment tank 20, 20b is the lid of the water treatment tank 20, and 20c is a substantially inverted cone. The bottom plate portion of the water treatment tank 20 formed in a shape, 21 is a tubular lower raw water supply portion that penetrates the outer cylinder portion 20a and opens at different positions above the inlet 5 of the inner cylinder portion 2, and 22 is a water treatment tank 20 is a slope portion formed so as to be inclined at 5 to 75 degrees (θ ₂ ) with respect to the horizontal plane so that the bottom plate portion 20c is lowered toward the introduction port 5, and 22a is a bearing plate formed on the bottom plate portion 1c. , 23a is an intermediate cylinder part erected upward from the bottom plate part 20c of the water purification part 3 between the outer cylinder part 20a and the inner cylinder part 2, and 23b is an inner peripheral surface of the intermediate cylinder part 23a and the inner cylinder part 2 A metal ion adsorbing part 23c formed in the water purification part 3 by the outer peripheral surface, 23c is outside the intermediate cylinder part 23a. The overflow part formed in the water purification part 3 by the surface and the inner peripheral surface of the outer cylinder part 20a of the water treatment tank 20, 23d is a water flow part formed in the lower end part of the intermediate cylinder part 23a, and 23e is an overflow part. 23c is an overflow filter disposed on the lower side of the purified water discharge portion 11 in 23c, 23f is a roof portion of the overflow portion 23c disposed on the upper end of the purified water portion 3, and 24 is an inlet 5 of the inner cylinder portion 2. And a separator draining part 25 formed between the separator discharging part 7 and an expanded metal or punching having an opening of a size that makes it difficult for the separator to pass through and covering the draining part 24 A net cylinder made of metal, metal mesh, etc., 26 is a rubber lining bonded to the edge side (end side) of the flat portion of the spiral blade 8b of the screw 8, θ ₂ is an inclination angle of the gradient portion 22 with respect to the horizontal plane, and B is It is a break line which divides the right and left of the cross section of the screw 8.
In FIG. 5, reference numeral 27 denotes a separating material such as magnesium or magnesium alloy supplied from the separating material supply unit 4 disposed on the upper part of the metal ion adsorption unit 23 b of the water purification unit 3 of the water treatment tank 20. The metal ion adsorption unit 23b is supplied with water from the upper raw water supply unit 4a. Reference numeral 28 denotes raw water supplied from the lower raw water supply section 21 to the inner cylinder section 2, and 29 denotes purified water (treated water) discharged from the purified water discharge section 11 by removing metal ions from the raw water 28. The raw water may be supplied from any one of the upper raw water supply unit 4a and the lower raw water supply unit 21.
Further, in FIG. 5, the left side from the virtual separation line F shown on the central axis of the rotation shaft 8 a of the screw 8 indicates the flow of the raw water 28 and the purified water (treated water) 29, and thus the separation material 27 is not illustrated. . The white arrows indicate the flow of the separating material 27, and the gray arrows indicate the flow of the raw water 28 and the purified water (treated water) 29.

Here, when the inclination angle θ ₂ (see FIG. 4) becomes smaller than 5 degrees, the gradient portion 22 is difficult to flow the supplied separation material 27 to the introduction port 5, and the separation material 27 is supplied to the inner cylinder portion 2. It becomes difficult and the adsorption separation efficiency of metal ions in the raw water 28 is lowered, which is not preferable. If the angle exceeds 75 degrees, the separating material 27 moves toward the inlet 5 at a time, the fluidity of the separating material 27 is likely to be hindered, and it becomes difficult to supply the separating material 27 to the inner cylinder portion 2, and the raw water 28 This is not preferable because the adsorption / separation efficiency of metal ions is reduced.

  A lining is provided on the edge side (end side) of the spiral blade 8b of the screw 8 so as to be in contact with the inner peripheral surface of the inner cylinder portion 2 so that the raw water does not diffuse when the raw water 28 contains harmful metal ions. 26 is disposed, and the watertightness of the inner cylinder part 2 is maintained by filling the gap between the end of the spiral blade 8 b of the screw 8 and the inner peripheral surface of the inner cylinder part 2.

  The overflow portion filter 23e may not be provided, and a sedimentation tank may be provided downstream of the water purifier Y instead.

About the water purifier Y of this Embodiment 2 comprised as mentioned above, the water purification process at the time of using magnesium or a magnesium alloy as a separating material is demonstrated using FIG.
First, the raw water 28 is supplied from the lower raw water supply part 21 and / or the upper raw water supply part 4a disposed on the bottom side of the inner cylinder part 2. The separation material 27 is supplied from the separation material supply unit 4 and introduced into the metal ion adsorption unit 23b, and moves along the inclination of the gradient unit 22 formed by the bottom plate 20c while adsorbing metal ions. It is supplied to the inner cylinder part 2 from the introduction port 5.
Next, when the screw 8 is rotated by the drive unit 10, the separation material 27 supplied to the co-rubbing unit 2a is pumped toward the upper part of the co-rubbing unit 2a while being mixed and stirred together with the raw water 28 by the spiral blade 8b. It is done. At this time, magnesium hydroxide on the surface of the separating material 27 adsorbs metal ions in the raw water 28, and the separating material 27 collides with each other or rubs against the inner peripheral surface of the spiral blade 8 b or the inner cylinder portion 2. Therefore, the magnesium hydroxide on the surface of the separating material 27 is peeled off together with the adsorbed metal ions, and the reproduction surface is exposed on the surface of the separating material 27.
Next, the purified water from which the metal ions have been adsorbed and separated from the raw water 28 is supplied from the drainer 24 to the metal ion adsorber 23b. The supplied purified water moves to the overflow section 23c through the water passage section 23d, and the exfoliation from the separation material 27 is removed by the overflow section filter 23e, and is discharged from the purified water discharge section 11 to the outside of the water treatment tank 20. The
Further, the separating material 27 is pumped further upward than the draining portion 24 by the spiral blade 8b. For this reason, the separating material 27 removes some of the surface water and is rubbed together in a drained state, so that it is easier to obtain a co-rubbing effect due to a collision between the separating materials 27 than in water. The pumped-up separation material 27 is discharged from the separation material discharge section 7, is deposited on the metal ion adsorption section 23b of the water purification section 3, and is supplied again from the introduction port 5 to the co-rubbing section 2a.
If the raw water 28 contains harmful metal ions, the raw water 28 is supplied only from the lower raw water supply unit 21, and the raw water 28 and the separating material 27 come into contact with each other at the co-rubbing portion 2 a to remove the metal ions. At this time, even when the metal ions in the raw water 28 cannot be sufficiently removed by the co-rubbing portion 2 a, the metal ions can be brought into contact with the separation material 27 again when the metal ions are supplied to the metal ion adsorption portion 23 b and remain in the purified water 23. Metal ions can be separated and removed by the metal ion adsorption portion 23b.

As mentioned above, since the water purifier Y of this Embodiment 2 is comprised, in addition to the effect | action obtained in Embodiment 1, the following effect | actions are obtained.
(1) Since the lower raw water supply part 21 penetrates the outer cylinder part 20a and communicates with the inner cylinder part 2, the raw water 28 is directly supplied into the inner cylinder part 2, so that the raw water 28 is treated. It does not mix in the purified water 29, can be prevented from being discharged from the purified water discharge section 11 without being treated, and the purified water 29 from which metal ions have been removed at a high removal rate can be stably obtained.
(2) Since the outlet of the separating material supply section 4 is opened above the metal ion adsorption section 23b formed between the inner cylinder section 2 and the intermediate cylinder section 23a, the supplied separating material 27 is introduced. It is easy to settle at a position close to the port 5, and the bottom plate portion 20 c of the water treatment tank 20 forms a gradient portion 22 that goes down toward the introduction port 5, so that the separating material 27 is introduced into the introduction port 5 of the inner cylinder portion 2. Can be stably introduced. Therefore, when metal ions are adsorbed by the metal hydroxide film on the surface of the separating material 27, the separating material 27 can be easily rubbed with the inner cylindrical portion 2, so that a new surface is efficiently formed on the surface of the separating material 27. Therefore, it is possible to prevent the adsorption / separation ability of the separating material 27 from being lowered.
(3) Since the inclination angle θ ₂ of the gradient portion 22 is 5 to 75 degrees with respect to the horizontal plane, the separation material 27 remains deposited on the gradient portion 22 or the separation material 27 flows into the introduction port 5 at a time. The separation material 27 can be stably introduced from the introduction port 5 to the co-rubbed portion 2a. Therefore, when metal ions are adsorbed by the metal hydroxide film on the surface of the separating material 27, the separating material 27 on which no new surface is formed does not collect at the bottom of the metal ion adsorbing portion 23b, and the processing capacity of the water purifier is improved. It can be prevented from lowering.
(4) Since the gap C between the screw 8 and the inner peripheral surface of the inner cylinder portion 2 is eliminated by the lining 26, the raw water 28 is unlikely to fall from the gap C, and the lower raw water supply unit 21 is provided. When the concentration of metal ions in the water is high or when harmful metal ions are contained in the raw water 28, the contact time between the raw water 28 and the separating material 27 is obtained by supplying the raw water 28 only from the lower raw water supply unit 21. Since the metal ions can be sufficiently removed from the raw water 28, the safety of the purified water (treated water) 29 can be improved.
(5) Since the overflow portion 23c is formed on the outer peripheral side of the metal ion adsorbing portion 23b, when the purified water (treated water) 29 contains a separated material (sludge) from the separating material, the bottom portion of the overflow portion 23c It becomes difficult to be discharged from the purified water discharge part 11. Therefore, it is possible to obtain purified water (treated water) 29 that does not contain sludge without providing a water purification tank or the like for removing the exfoliated material downstream of the water purification apparatus, which is excellent in convenience.

(Embodiment 3)
The water purifier according to Embodiment 3 will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the thing similar to Embodiment 1 or Embodiment 2, and description is abbreviate | omitted.
FIG. 6 is a front cross-sectional view of a main part of the water purifier according to the third embodiment, and FIG. 7 is a schematic diagram showing a use state of the water purifier according to the third embodiment.
6 and 7, Z is the water purifier of the third embodiment, 30 is the water treatment tank of the water purifier Z, 30a is the outer cylinder of the water treatment tank 30, 30b is the lid of the water treatment tank 30, and 30c is The bottom plate part 31 of the water treatment tank 30 is a weir part formed between the intermediate cylinder part 23a and the outer cylinder part 30a by being suspended in the overflow part 23c from the roof part 23f on the upper end side of the overflow part 23c. 31a is a bored weir formed on the lower end side of the dam portion 31, 32 is a sedimentation separation portion formed on the overflow portion 23c by the outer peripheral surface of the intermediate cylinder portion 23a and the inner peripheral surface of the dam portion 31, and 33 is an inner A communication pipe in which the cylindrical part 2 and the sedimentation separation part 32 of the water purification part 3 are communicated, 34 is a sedimentation part at the bottom of the water treatment tank 30, and 34 a is downward from the sedimentation part 34 toward the inlet 5. The slope portion 22 having a slope of a particular slope angle θ ₃ is formed and the separating material 27 cannot pass through A filter for precipitation separation having a size opening, 35 is a discharge adjustment plate arranged on the upper end side of the inner cylinder portion 2 to adjust the discharge amount of the separation material discharged from the separation material discharge portion 7, and 35a is a discharge adjustment plate A discharge port 36 for the separating material formed at the central portion 35 is a rubber or synthetic resin cover ring disposed at the end of the spiral blade 8 b of the screw 8.

Here, the precipitation unit 34 is preferably provided not only on the bottom of the water purification unit 3 but on the entire bottom of the water treatment tank 30.
Thereby, in the sedimentation part 34 of the bottom part of the water treatment tank 30, the exfoliation (sludge) etc. from the separation material 27 mixed in the water of the inner cylinder part 2 or the water purification part 3 can be isolate | separated.
Sludge such as exfoliated material from the surface of the separation material 27 and separated from the separation material 27 and separated from the separation material 27, suspended matter, etc., can be easily discharged from the water supply / drainage pipe 9 by opening the water supply / drainage valve 9a. Can do.

The material of the discharge adjustment plate 35 is not particularly limited as long as metal ions are not eluted, and the same material as that of the inner cylinder portion 2 can be used.
The shape of the discharge port 35a formed by the discharge adjustment plate 35 is not particularly limited, and may be any shape such as a circular shape, an elliptical shape, or a polygonal shape.
Since the operation of the cover ring 36 is the same as that of the lining 26 of the second embodiment, the description thereof is omitted.

In the present embodiment, the gradient portion 22 is formed by a precipitate separation filter 34a.
Similarly to the second embodiment, the gradient portion 22 is inclined at 5 to 75 degrees (θ ₃ ) with respect to the horizontal plane so as to descend toward the introduction port 5.

  In the present embodiment, only one dam portion 31 is formed between the intermediate cylinder portion 23a and the outer cylinder portion 30a, but a plurality of dam portions 31 may be formed. By forming a plurality of weir portions 31, sludge in the purified water (treated water) 29 can easily settle and can be easily separated and recovered.

About the water purifier Z of this Embodiment 3 comprised as mentioned above, the water purification process at the time of using magnesium or a magnesium alloy as a separating material is demonstrated using FIG.
First, the separation material 27 supplied from the separation material supply section 4 passes through the metal ion adsorption section 23b, and from the inlet 5 to the co-rubbed section 2a (inner cylinder section) by the gradient section 22 formed by the precipitation separation filter 34a. 2), the raw water 28 is supplied from the lower raw water supply unit 21 and / or the upper raw water supply unit 4a and introduced into the co-rubbing unit 2a.
Next, the separation material 27 supplied to the inner cylinder part 2 is pumped together with the raw water 28 from the bottom to the upper part of the inner cylinder part 2, and the purified water 29 from which the metal ions are adsorbed and separated from the raw water 28 is connected to the communication pipe 33. And flows into the sedimentation separation unit 32 of the water purification unit 3. Further, the separation material 27 is pumped up to the separation material discharge unit 7 and is discharged from the discharge port 35 a to the metal ion adsorption unit 23 b of the water purification unit 3 while the discharge amount is adjusted by the discharge adjustment plate 35. The separating material 27 discharged to the metal ion adsorbing portion 23b is supplied again to the co-rubbed portion 2a together with the raw water 28 from the introduction port 5.
Next, the purified water 29 that has flowed into the settling / separating section 32 of the overflow section 23 c passes through the borer weir 31 a below the weir section 31 and is discharged from the purified water discharge section 11 to the outside of the water treatment tank 30. In addition, you may provide a filter in the purified water discharge part 11 as needed. Further, the exfoliated material and the like from the separating material 27 generated by co-rubbing is trapped by the weir part 31, passes through the precipitation separation filter 34 a, precipitates in the precipitation part 34, and accumulates.

As mentioned above, since the water purifier Z of this Embodiment 3 is comprised, in addition to the effect | action similar to (1), (3), (5) of Embodiment 1 and Embodiment 2, it is the following. The following effects are obtained.
(1) Since the overflow portion 23c is communicated with the co-rubbed portion 2a by the communication pipe 33 and includes the sedimentation separation portion 32 formed between the dam portion 31 and the intermediate cylinder portion 23a, the overflow portion 23c flows into the overflow portion 23c. Sludge such as exfoliated material in the purified water (treated water) 29 is blocked by the dam portion 31, passes through the precipitation separation filter 34 a, precipitates in the precipitation portion 34, and is separated (removed). Thereby, the purified water (treated water) 29 from which the sludge has been removed can be obtained, the maintenance and management of the water purification apparatus Z is facilitated, and the resource saving and maintenance are excellent.
(2) Since there is the water supply / drainage pipe 9 for discharging the precipitate such as the peeled material from the separating material 27 on the bottom side of the sedimentation section 34, the sediment deposited on the sedimentation section 34 can be easily taken out and maintained. Excellent in properties.
(3) Since the discharge adjustment plate 35 is provided, the discharge amount of the separation material 27 discharged from the separation material discharge portion 7 can be adjusted according to the size of the discharge port 35a, etc. Since a part of the separating material 27 can be pressed, the co-friction effect of the separating material 27 can be adjusted by the size and shape of the discharge adjusting plate 35.

(Embodiment 4)
Hereinafter, the water purifier of Embodiment 4 will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the thing similar to Embodiment 1 thru | or Embodiment 3, and description is abbreviate | omitted.
FIG. 8 is a schematic plan sectional view of the water purifier according to the fourth embodiment.
In FIG. 8, the water purifier X1 of the fourth embodiment is different from that of the first embodiment in that the inside of the outer cylinder portion 1a (the water purification portion 3) is divided into three locations by a partition wall 37, and the inner cylinder portion 2 is provided for each. It is the point where it is arranged.
In the present embodiment, the three inner cylinder portions 2 are provided inside the outer cylinder portion 1a. However, the size of the outer cylinder portion 1a can be appropriately changed depending on the processing amount, and the inner cylinder portion 1a can be changed depending on the processing capacity. The number of the cylinder parts 2 can be selected suitably. In addition, as an arrangement | positioning method of the inner cylinder part 2, it can also arrange | position equally like FIG. 8, and can also arrange | position biased. At this time, it is preferable to form the bottom part of the outer cylinder part 1a in the shape which combined several mortars so that it may incline toward each inner cylinder part 2. FIG. Further, one or a plurality of water purification discharge sections 11 can be provided in each water purification section 3.
Moreover, when providing the intermediate | middle cylinder part 23a, it can also each provide around each inner cylinder part 2, and the one inner cylinder part is provided in the inside of the outer cylinder part 1a, and several inner cylinder parts 2 are in it. Can also be arranged.
Moreover, when providing the partition 37 like FIG. 8, the raw | natural water supply part can be provided in one of them, and raw | natural water can also be made to flow through the area (water purification part 3) divided | segmented by the partition 37 in order. In that case, you may make it send raw | natural water from each purified water discharge part 11 to the area divided by the next partition 37 with the pump. By doing so, since raw water can be repeatedly contacted with the separating material 27 in the purified water part 3 around each inner cylinder part 2, it is excellent in the quality of purified water.

As mentioned above, since the water purifier of this Embodiment 4 is comprised, in addition to the effect | action similar to Embodiment 1, the following effects are obtained.
(1) Since a plurality of inner cylinder parts 2 are provided inside the outer cylinder part 1a, the amount of contact with the circulating separation material 27 is increased, the treatment efficiency in one water purifier is excellent, and the treatment amount is Since it can be increased, it has excellent purification ability.
(2) The inner cylinder portion 2 can be appropriately disposed in accordance with the internal capacity of the outer cylinder portion 1a and the target processing amount, and there are few portions where convection is less or liquid channeling occurs. Excellent water purification performance because it can.
(3) The introduction port 5 can be appropriately provided in the lower portion of the inner cylinder part 2, and the separating material 27 is provided in a part other than the introduction port 5 by shifting the positions of the introduction ports 5 of the plurality of adjacent inner cylinder parts 2. Can be prevented, and the processing efficiency is excellent, and since there is no separating material 27 to be deposited without being used, the resource saving property is excellent.
(4) When the raw water is made to flow through the sections separated by the partition walls 37 in order, the raw water can be repeatedly brought into contact with the separating material 27 in the water purification units 3 around the respective inner cylindrical portions 2, so that Excellent quality.

(Embodiment 5)
Hereinafter, the water purifier of Embodiment 5 will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the thing similar to Embodiment 1 thru | or Embodiment 4, and description is abbreviate | omitted.
FIG. 9 is a front cross-sectional view of a main part of the water purifier according to the fourth embodiment, and FIG. 10 is a schematic diagram showing a use state of the water purifier according to the fourth embodiment.
In FIG.9 and FIG.10, the point from which the water purifier Z1 of Embodiment 5 differs from Embodiment 4 is that the lower raw water supply part 21a is opened in the inner peripheral surface of the lower end side of the outer cylinder part 30a, A point where a water flow part 23d similar to that of the second embodiment is formed at the lower end of the intermediate cylinder part 23a, a point that the draining part 24, the weir part 31 and the communication pipe 33 are not provided, and a filter for precipitation separation 34b is inclined from the upper part of the lower raw water supply part 21a to the lower end part of the inlet 5 (inner cylinder part 2), and the bottom plate part 40c of the water treatment tank 40 is formed flat. Is a point.
9 and 10, the water supply / drainage pipe 9 and the water supply / drainage valve 9a are omitted, but these may be provided in the bottom plate portion 40c.

About the water purifier Z1 of this Embodiment 4 comprised as mentioned above, the water purifying process at the time of using magnesium or a magnesium alloy as a separating material is demonstrated using figures.
First, the separation material 27 supplied from the separation material supply section 4 passes through the metal ion adsorption section 23b, and from the inlet 5 to the co-rubbing section 2a (inner cylinder section) by the gradient section 22 formed by the precipitation separation filter 34b. 2). The raw water 28 is supplied from the lower raw water supply section 21a and is introduced from the introduction port 5 into the co-rubbed section 2a through the precipitation separation filter 34b.
Next, the separation material 27 supplied to the inner cylinder portion 2 is pumped together with the raw water 28 from the bottom to the upper portion of the inner cylinder portion 2, and metal ions are adsorbed and separated from the raw water 28. Further, the separation material 27 is pumped up to the separation material discharge unit 7 and is discharged from the discharge port 35 a to the metal ion adsorption unit 23 b of the water purification unit 3 while the discharge amount is adjusted by the discharge adjustment plate 35. The separating material 27 discharged to the metal ion adsorbing portion 23b is supplied again to the co-rubbed portion 2a together with the raw water 28 from the introduction port 5.
The separation material 27 is repeatedly circulated to adsorb and separate metal ions from the raw water 28, and the raw water 28 from which the metal ions have been removed is discharged from the purified water discharge unit 11 to the outside of the water treatment tank 40 as purified water 29. In addition, you may provide a filter in the purified water discharge part 11 as needed.
It should be noted that exfoliated material or the like from the separation material 27 generated by co-rubbing passes through the precipitation separation filter 34b, and is deposited and accumulated in the precipitation portion 34. A part of sludge such as exfoliated material is discharged from the purified water discharge unit 11, but is separated by precipitation in a downstream settling tank.

As mentioned above, since the water purifier of this Embodiment 5 is comprised, the effect | action similar to (3), (5) of Embodiment 1, Embodiment 2, and (3) of Embodiment 3 In addition, the following effects can be obtained.
(1) Since the outlet of the separation material supply part 4 is opened above the metal ion adsorption part 23b formed between the inner cylinder part 2 and the intermediate cylinder part 23a, the supplied separation material 27 is introduced. It is easy to settle at a position close to the mouth 5, and the slope portion 22 that goes down toward the inlet 5 is formed at the bottom of the water treatment tank 40 by the precipitation separation filter 34 b, thereby separating the separating material 27 from the inner cylinder portion 2. It is possible to facilitate the stable introduction into the inlet 5. Therefore, when metal ions are adsorbed by the metal hydroxide film on the surface of the separating material 27, the separating material 27 can be easily rubbed with the inner cylindrical portion 2, so that a new surface is efficiently formed on the surface of the separating material 27. Therefore, it is possible to prevent the adsorption / separation ability of the separating material 27 from being lowered.

  In Embodiments 1 to 5, the case where magnesium or a magnesium alloy is used as a separation material has been described. However, if metal ions contained in raw water can be adsorbed, a metal such as iron other than magnesium or a magnesium alloy (of ionization tendency) Expensive) and alloys can be used as the separating material. In particular, when the raw water contains a large amount of arsenic, iron particles such as cast iron are preferably used.

Hereinafter, the present invention will be specifically described by way of examples. The present invention is not limited to these examples.
Example 1
The outer cylinder has an outer diameter of 100 mm (plate thickness of 2 mm) and a height of 120 mm, the inner cylinder has an inner diameter of 48 mm (plate thickness of 2 mm), and the separating material discharge section has a height of 50 mm. The water purifier of Example 1 provided with the three-stage spiral screw of the outer diameter of a screw 40mm (shaft diameter 15mm) and a 40mm pitch (angle 45 degrees) was produced. In the performance test, the rotation speed of the screw was 200 rotations / minute, and the liquid throughput was kept flowing at a speed of 20 L / minute. Moreover, the liquid level height at that time was a place of 40 mm from the lower side of the water purifier. As the separating material, 200 g of a magnesium chip having a length of 10 mm, a width of 2 mm, and a thickness of 1 mm was used. At that time, the input raw water and the raw water continued to flow at 20 L / h, and the iron and manganese of the purified water treated with the water purification apparatus of Example 1 collected after 30 minutes, 40 minutes, 50 minutes, and 60 minutes, respectively. The results of measuring the content are shown in (Table 1).

From (Table 1), the content of iron in raw water and purified water is that the raw water is 15.18 ppm, and the purified water treated with the water purification device of Example 1 can remove iron to 0.002 ppm or less. You can see that it is made. In addition, with respect to the manganese content of 2.03 ppm of raw water, the purified water treated with the water purification apparatus of Example 1 is 0.017 ppm, and manganese can be removed to 1/100 or less of the raw water. Recognize. As described above, according to the present embodiment, by separating and using the separation material, the separation material and the raw water can be efficiently brought into contact with each other in the water purification portion and the inner rubbing portion of the inner cylinder portion. It became clear that an excellent water purification device could be provided.

  Since the separation material is used by circulating the separation material, it is excellent in resource saving, and when using a separation material mainly composed of metals such as magnesium and iron, it can be efficiently rubbed, and the quality of the raw water can be improved. In addition, it is possible to provide a water purifier that can adjust the regeneration rate of the separating material and is excellent in maintainability and stability.

X, Y, Z, X1, Z1 Water purification devices 1, 20, 30, 40 Water treatment tanks 1a, 20a, 30a Outer cylinder parts 1b, 20b, 30b Lid parts 1c, 20c, 30c, 40c Bottom plate part 2 Inner cylinder part 2a Co-rubbing part 2b Support part 3 Water purification part 4 Separation material supply part 4a Upper raw water water supply part 5 Inlet 7 Separation material discharge part 8 Screw 8a Rotating shaft 8b Spiral blade 9 Water supply / drainage pipe 9a Water supply / drainage valve 10 Drive part 11 Clean water discharge part 11a Filter 12 Sealing material 13 Overflow pipe (drainage pipe)
13a Overflow filters 21, 21a Lower raw water water supply part 22 Gradient part 23a Intermediate cylinder part 23b Metal ion adsorption part 23c Overflow part 23d Water flow part 23e Overflow part filter 23f Roof part 24 Drain part 25 Net cylinder 26 Lining 27 Separation material 28 Raw water 29 Clean water (treated water)
31 Weir part 31a Drilling weir 32 Sedimentation separation part 33 Communication pipe 34 Sedimentation part 34a, 34b Filter 35 for sedimentation separation Discharge adjustment plate 35a Discharge port 36 Cover ring 37 Partition B Break line C Inner circumferential surface of inner cylinder part and spiral blade Gap D Spiral blade outer diameter d Rotating shaft diameter F Virtual separation line θ ₁ Spiral blade tilt angle θ _2, θ ₃ Gradient angle

Claims (10)

A water treatment tank, an inner cylinder part formed inside the water treatment tank, a water purification part formed between the outer cylinder part and the inner cylinder part of the water treatment tank, and the water purification part A separating material supply unit disposed above, an upper raw water supply unit disposed above the water purification unit and / or a lower raw water supply unit disposed on the lower side of the outer tube unit, and the inner cylinder The separation material and raw water introduction port formed in communication with the water purification unit on the bottom side of the unit, and the upper cylinder side to the water purification unit provided at a position higher than the level of the liquid level of the raw water A separation material discharge portion for discharging a separation material made of a metal or an alloy capable of adsorbing metal ions contained in the raw water, a screw rotatably disposed on a central axis of the inner cylinder portion, and the screw A drive unit for rotating the water and a purified water discharge unit disposed in the outer cylinder unit Water purification device according to claim.   The water purifier according to claim 1, wherein the lower raw water supply section penetrates the outer cylinder section and communicates with the inner cylinder section.   The water purifier according to claim 1, further comprising a slope portion that descends toward the introduction port at a bottom portion of the water treatment tank.   The water purifier according to any one of claims 1 to 3, further comprising a draining part formed between the inlet of the inner cylinder part and the separating material discharge part.   5. The apparatus according to claim 1, wherein the separation material discharge portion includes a discharge adjustment plate disposed on an upper end side of the inner cylinder portion and having a discharge port formed in a central portion thereof. The water purifier of description.   The ratio D / d = 2-10 of the outer diameter D of the blade of the screw and the diameter d of the rotating shaft of the screw, and the inclination angle of the blade is 5-60 degrees with respect to a plane perpendicular to the rotating shaft. The water purifier according to any one of claims 1 to 5, wherein:   The rotation axis of the screw is arranged so as to be decentered by 0.1 to 3 mm with respect to the central axis of the inner cylinder portion. Water purification device.   The water purifier according to any one of claims 1 to 7, wherein a gap between an inner peripheral surface of the inner cylinder portion and an end portion of the blade is 0 to 10 mm.   The water purification part is an intermediate cylinder part disposed between the outer cylinder part and the inner cylinder part, a metal ion adsorption part formed between the inner cylinder part and the intermediate cylinder part, An overflow portion formed between the intermediate tube portion and the outer tube portion, and an outlet of the separation material supply portion is opened above the metal ion adsorption portion. The water purifier according to any one of claims 1 to 8.   The overflow part is a communication pipe communicating with the draining part and the intermediate cylinder part, a dam part disposed between the intermediate cylinder part and the outer cylinder part, the dam part and the intermediate cylinder part, The water purifier according to claim 9, further comprising: a settling / separating portion formed between the two and a boring weir formed in the dam portion.