JP3353091B2 - Water treatment device and water treatment facility using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water treatment apparatus, and more particularly, to a method in which a large water flow such as a rotary flow or a vertical vortex is forcibly generated in water to be treated in a treatment tank, or in addition to these. In addition, turbulence and small vortices such as vortex, hill vortex, vortex ring, Karman vortex or Taylor vortex are generated to collect and remove oil and suspended matter present in the water to be treated. The present invention relates to a water treatment apparatus, and a water treatment apparatus that can easily, reliably, and efficiently perform biological water treatment using microorganisms present in water to be treated.
For example, the water treatment apparatus of the present invention, pumping stations rainwater, flowing rain water and sewage to the same sewer combined sewer pumping stations, and under wastewater treatment facilities, effectively used as a water conservation facility Can be

[0002]

2. Description of the Related Art In general, water in rivers and lakes, or industrial wastewater or domestic wastewater, includes suspended matter such as oil and solid matter such as sand.
Various miscellaneous impurities are included. Nowadays, environmental protection on a global scale is called for, and it is required that these water purification treatments be performed intensively, efficiently, and completely with energy saving. Examples of the water purification method include a physical treatment method, a chemical treatment method, a biological treatment method, and the like. In any case, suspended matter such as oil and solid matter such as sand contained in the water to be treated directly or indirectly impede the water purification treatment. It is desirable to keep.

Conventionally, a sand basin or a sedimentation basin is generally used to remove solids such as sand contained in the water to be treated. On the other hand, when removing suspended matter, a screen or the like is generally used. However, when a sedimentation basin or the like is used for removing the solid matter, there is a problem that a vast site and an apparatus having an expensive and complicated mechanism for removing the sediment are required. Further, in the case of using a screen to remove even fine suspended solids, there is a problem that an expensive screen having a fine mesh is required and a problem of clogging of the screen due to the suspended solids.

[0004] In contrast to the above prior art, the present inventor disclosed in Japanese Patent Application No. 1-85738 and the like a horizontal settling tank in a water treatment facility or a substantially central processing tank for removing oil and suspended matter. A rotating cylinder is provided vertically, and the rotating cylinder is rotated to make good use of the hydraulic characteristics generated in the water to be treated, so that the solid-liquid separation efficiency is good, and the solid-liquid separation is inexpensive and easy to handle. A liquid separation device has already been proposed. In the device,
The rotary cylinder is rotated in the water to be treated containing oil and solids, so that the oil and solids can be separated from water more quickly and reliably. And, compared to the conventional method that does not use a rotating cylinder, this device actually separates suspended matters such as oil and solids such as sand, etc. quite efficiently, but depending on the conditions at the installation place. The separation of suspended matter is not yet sufficient. Further, the above-mentioned apparatus cannot always sufficiently cope with fluctuations in the water level in the treatment tank.

[0005] The biological wastewater treatment (water treatment) method using microorganisms is widely practiced as an earth-friendly water treatment method, unlike the chemical treatment method that may cause secondary pollution. For example, in the case of the activated sludge method, which is a representative of the biological water treatment method, in order to increase the efficiency and speed of the biological treatment, the treated water is aerated and drained in an aerobic atmosphere. Processing is taking place. Further, in the oxidation groove method, the water to be treated flows through a long water channel using a rotating drum instead of aeration, and oxygen is absorbed into the water to be treated from the water surface while flowing. That is, in any of these conventional methods, the only means for activating the activity of microorganisms in the wastewater is how much oxygen can be sent into the water to be treated. At present, no more effective method for activating microorganisms has been found, and there is a limit in improving the efficiency of wastewater treatment.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to reduce the level of water to be treated in a treatment tank by removing suspended matter such as oil and solid matter such as sand contained in the treated water. Another object of the present invention is to provide a water treatment apparatus that can quickly and surely separate and remove any fluctuations. Furthermore, an object of the present invention is to realize an environment where microorganisms can easily be activated in the treatment tank by forcibly creating a rapid or slow flow state in the water to be treated that is constantly flowing in the treatment tank. It is an object of the present invention to provide a simple and economical water treatment apparatus that provides oxygen to a person, exercises, takes a break, and restores energy to improve biological treatment efficiency.

[0007]

The above object is achieved by the present invention described below. That is, the present invention provides a treatment tank having an inlet and an outlet for treated water, and a rotary cylinder for forcibly generating a primary flow and a secondary flow accompanying the primary flow in the treated water in the treatment tank. A water treatment apparatus comprising a body and configured to treat the water to be treated by a rotating action of a rotary cylinder, wherein a water ring is provided on the outer periphery of the rotation cylinder with a vertically movable floating ring. And a treatment tank having an inlet and an outlet for the water to be treated, and a rotary cylinder for forcibly generating a primary flow and a secondary flow accompanying the primary flow in the water to be treated in the treatment tank. A water treatment apparatus configured to treat the water to be treated by a rotating action of a rotary cylinder, wherein a planar shape of a treatment tank is any one of a circular shape, an elliptical shape, a polygonal shape, and a long channel type, and This is a water treatment apparatus in which a rotating cylinder is provided at an eccentric position in a tank.

[0008]

[Function] In the treatment tank, a primary flow and a secondary flow are generated in the water to be treated by the rotating action of the rotary cylinder, so that floating substances such as oil and solid matter such as sand in the water to be treated can be quickly removed. And it can be separated reliably. In the water treatment apparatus, a turbulent flow or a so-called vortex is provided by providing an appropriate blocking fluid (general term for a turbulent flow) in a flow path of a primary flow and a secondary flow accompanying the primary flow. By generating countless small eddies such as spherical vortices, vortex rings, Karman vortices, or Taylor vortices, the microorganisms are given a rotational motion, and are present in the water to be treated in a gentle flow region created by these small eddies. By resting the microorganisms that have been treated, the microorganisms are activated to produce good-quality secretions, and the biological treatment efficiency for the water to be treated can be further improved.

The reason why the efficiency of the biological purification treatment in the apparatus of the present invention is improved is not clear, but it is speculated as follows. That is, many microorganisms existing in the water to be treated have a motor ability by flagella or hairs and have a habit of constantly exercising. In the sense of assisting the movement of the microorganisms, in the water treatment apparatus of the present invention, in addition to the primary flow and the secondary flow, countless large and small vortices are constantly generated in the tank. It is thought that the environment where the mosquitoes were resting and after which they could work more actively was formed in the treated water.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail with reference to a preferred embodiment shown in the drawings. As shown in FIG. 1 (a), the water treatment apparatus of the present invention has an inflow port 1 and an outflow port 2 for water 7 to be treated.
And a rotary cylinder 5 for forcibly generating a primary flow 4a and a secondary flow 4b accompanying the primary flow in the water 7 to be treated in the processing tank 3. And

In the present invention, for example, as shown in FIG. 1 (a), a rotating cylinder 5 having at least one of an upper diameter, a middle diameter, and a lower diameter in a water 7 to be treated in a treatment tank 3. Is installed, and the cylinder 5 is horizontally rotated by a driving source (not shown) by a motor or the like attached to the processing tank 3, so that the primary flow 4 a, which is a rotational flow, and the primary flow And a vertical vortex, which is a secondary flow 4b, which is generated as a result. For example, in the case of the rotating cylinder 5 shown in FIG. 1A, when the cylinder 5 is horizontally rotated, a larger rotation is obtained than when a "square" cylindrical body having no different diameter is rotated. A primary flow is generated. Then, the water to be treated is hit against the tank wall by the centrifugal force of the strong rotating flow, the water level in this portion is raised, and a strong secondary flow 4b is generated.

The rotary cylinder 5 which characterizes the present invention may be any one as long as it can rotate freely and slowly in the water to be treated. In addition to the shape shown in FIG. Form. For example, FIG. 1 (a) and FIG.
As shown in FIG. 2A, a cylindrical body whose diameter continuously changes, or as shown in FIG. 2B, whose upper, middle and lower diameters change discontinuously. A cylindrical body of any shape, such as a cylindrical body, is preferably used. In addition, FIG. 6 shows an example of the appearance of the rotary cylinder 5 which can be used in the present invention. By using such various shapes, various vertical vortices as shown in FIG. By strongly generating the next flow 4b, oils and suspended matters floating on the surface layer of the water to be treated can be accumulated near the upper part of the rotating cylinder or near the side wall of the treatment tank.

For example, when the rotating cylinder 5 is a cylinder having a large upper diameter as shown in FIG. 1A, the flow of the water to be treated generated by the rotation of the cylinder 5 causes the sand having a large specific gravity to flow. Solids 10 such as oil collect at the center of the bottom of the tank, while suspended matter such as oil having a low specific gravity on the surface of the water to be treated is swept toward the side wall of the treatment tank 3 by a strong secondary surface flow. .
Therefore, solids 10 such as sand accumulated at the center of the tank bottom are:
It is taken out of the system and processed by a sand pump or the like.

On the other hand, floating substances such as oil are overflowed as described below, and then disposed of. In the case of using the cylinder 5 having a large upper diameter, as shown in FIG. 1A, a suspended matter pit 11 is provided continuously outside the processing tank 3, and further, a partition between the pit 11 and the processing tank 3 is formed. It is preferable to provide a gate 12 that moves up and down on the wall. In this manner, the gate 12 can be placed at an optimal position according to the difference in water level in the treatment tank 3, and furthermore, by lowering the gate 12 from the water surface position, a large amount of oil and suspended matter can be obtained. The water to be removed at the upper portion (hereinafter, abbreviated as “removed water”) can easily overflow from the inside of the processing tank 3. As a result,
The removed water is guided into the suspended matter pit 11 and then taken out of the system by the pump P or the like.

At this time, in the water treatment apparatus of the present invention shown in FIG. 1, as shown in FIGS. 1 (b) and 1 (c) , a pair of floating members on the surface of the water 7 are provided inside the wall of the treatment tank 3. Float 13,
It is preferable to provide a connecting rod 14 for connecting the connecting members 13 and a plurality of fluid-blocking fluids 6 fixed to the connecting rod 14. As a result, a small vortex 15 is generated near the fluid shield 6, and the suspended matter such as oil is easily attracted to the fluid shield 6, and the suspended matter such as oil is more completely and easily removed from the surface of the water to be treated. From the pit 11.

When the level of the water to be treated in the treatment tank 3 fluctuates sequentially, to collect and separate the removed water containing a large amount of oil and suspended matter, as shown in FIG. The water treatment apparatus is configured such that the diameter is smaller than that of the other parts, and the rotary cylinder 5 provided with the slit-shaped through-holes 16 in the side wall and the removed water is collected at the center of the treatment tank 3. Is preferred. The shape of the through-hole 16 is not limited to the vertically long slit shape shown in FIG. 3 as long as the intended purpose can be achieved, and a plurality of horizontally long slits provided above and below the side wall of the cylindrical body 5 are provided. Any shape may be used. In this case, as a method of sucking the removed water accumulated in the cylindrical body 5 by the upper pump P, the removed water can be moved up and down in accordance with the water level, and a suction device having a suction port facing upward with respect to the water surface can be used. It is preferable to suck and remove only.

Further, in the apparatus of the present invention, as shown in FIG. 4, a floating cylinder which moves up and down on the side wall of the cylinder 5 due to the fluctuation of the water level in the treatment tank 3 is provided on the outer periphery of the rotating cylinder having a constant diameter. By providing the mold wheel 17, a part of the entire diameter of the cylindrical body 5 including the floating wheel 17 can be enlarged. If you do this,
For example, as shown by a dotted line in FIG.
Is always positioned on the surface of the water to be treated in the treatment tank 3 and rotates together with the rotary cylinder 5 in that state. As a result, even when the water level varies in the water to be treated, the rotational flow generated in the water to be treated on the upper side is always larger than the rotational flow generated in the water to be treated on the lower side in the treatment tank 3. Therefore, as described above, even when the rotary cylinder 5 provided with the floating wheel 17 is used, a strong primary flow and a strong secondary flow accompanying the primary flow are generated, and a large amount of oil and the like is generated. Can be reliably separated from the water to be treated, transferred to the suspended matter pit 11, and taken out. The plan shape of the floating wheel 17 is shown in FIG.
The outer peripheral circle shape as shown in (b) or the outer peripheral elliptical shape may be used (not shown). As the rotating cylinder of the above embodiments for use in the present invention, as shown in FIG. 4, preferably provided with vertical movement possible浮型wheel 17 on the outer periphery of the rotating cylinder.
In addition, the rotating cylinder with a floating ring used in the present invention has low efficiency.
A rotating cylinder is a rod-shaped structure
May be used instead of.

The water treatment apparatus of the present invention is configured by installing the above-described rotary cylinders 5 of various shapes in the treatment tank 3, and the rotary cylinder 5 is, for example, shown in FIG. 5 may be installed at substantially the center of the processing tank 3 as in the conventional case.
As shown in the above, it may be installed at an eccentric position in the tank. When installed at the eccentric position, unlike the case where it is installed at a substantially central portion in the tank, the rotating flow 4a which is the primary flow becomes irregular, and the inside of the processing tank 3 which accompanies the primary flow 4a is generated. Vertical vortices (not shown), which are secondary flows, are also irregular. As a result, not only the primary flow and the secondary flow caused by this, but also other complicated turbulences and eddies are generated in the processing tank 3, and stagnation is generated in the processing water, thereby removing a large amount of oil and the like. This is preferable because the concentration of suspended solids in water may increase. For this reason, the planar shape of the treatment tank is not limited to a circular shape, but may be an elliptical shape as shown in FIG. 5, or may be a polygonal shape or a long channel type.

As another preferred example of the treatment tank 3, for example, when the specific gravity of the substance separated from the water to be treated is large, the inlet 1 is provided at a middle position in the water depth, When the specific gravity of the object is small, the inlet 1 is provided at a shallow position in the water depth direction. The flow direction of the water to be treated is set in the tangential direction of the circumference of the processing tank 3 so as to minimize the disturbance of the flow of the water to be treated in the processing tank 3. It is preferable that the structure is such that water easily flows along the wall surface of the processing tank 3. The constituent material, volume, etc. of the treatment tank 3 may be appropriately changed depending on the conditions of the water to be treated, that is, the treatment place, the amount of water, and the type and amount of oils and solids contained therein. Tank 3 is made of metal such as concrete, steel plate, copper plate, etc.
It is made of any material such as plastic such as hard vinyl chloride resin, wood, far-red ceramic, etc., and is usually 0.5
It may have a volume of to 500m ³ is not limited thereto.
When the water to be treated is treated and the water to be treated is transferred from the treatment tank 3 to the next treatment step, it is better to install the rotary cylinder 5 at an eccentric position in terms of space in the entire treatment facility. Often preferred.

Means for rotating the rotary cylinder 5 used in the water treatment apparatus of the present invention includes, for example, the rotary cylinder 5
In the method of driving the outer periphery by providing a gear or the like on the outer periphery of the upper end of the cylindrical body 5 when the
Alternatively, if there is no other problem, a method may be used in which a cylindrical body 5 having a central axis is used and the central axis is suspended from the support so as to be freely rotatable. The rotary cylinder 5 as described above has a diameter of about 10 to 30% of the diameter of the processing tank 3, and its length depends on the size and depth of the processing tank 3 and the required processing capacity. And can be changed arbitrarily in relation to the power cost,
In some cases, two or more rotating cylinders may be provided in the processing tank 3 in parallel or in series. The rotating cylinder 5
In consideration of strength, antiseptic properties, and the like, it is preferable that the material be formed of a corrosion-resistant material such as stainless steel, a material that generates electromagnetic waves, an antibacterial material such as copper, or the like.

As described above, according to the water treatment apparatus of the present invention, impurities having a large specific gravity such as sand in the water to be treated are deposited on the bottom of the tank, and oil and other suspended matters having a small specific gravity are deposited on the tank bottom. As a result of being easily separated into the upper layer of the treated water, the suspended matter such as oil and solid matter such as sand contained in the treated water are in a state where the solid matter is reduced as much as possible. By using it for the pretreatment and performing various purification treatments thereafter, the efficiency of the purification treatment at the wastewater treatment plant is significantly improved as compared with the conventional case. Further, the water treatment apparatus of the present invention is very preferably used as a treatment tank for activated sludge treatment of wastewater, a reaction tank for chemical treatment (chemical treatment), or as a pretreatment tank for these treatment facilities. That is, the water treatment apparatus of the present invention is used for general rainwater drainage pumping stations and a combined sewerage system in which rainwater and sewage flow through the same conduit for the purpose of preserving the water quality of public water bodies that are often regarded as a problem these days. If used at a pumping station, the quality of water discharged into public waters can be improved.

Next, a water treatment apparatus according to the present invention, in which the biological water treatment efficiency is remarkably improved, will be described. This device is
A treatment tank having an inlet and an outlet for the water to be treated, and a rotating cylinder for forcibly generating a primary flow and a secondary flow accompanying the primary flow in the water to be treated in the treatment tank, A water treatment apparatus configured to treat water to be treated by a rotating action of a cylindrical body, and more preferably provided with at least one fluid blocking fluid in a primary flow path and / or a secondary flow path. It is. In this device, a small vortex flow is continuously, intermittently, or slowly generated in a water flow by a shielding fluid,
By the change of these flows, an appropriate amount of oxygen is absorbed into the water to be treated, and the microorganisms in the treatment tank are activated by exercising and resting, so that the microorganisms can emit good-quality secretions. In other words, by providing a fluid block such as a round bar, a square bar, or a perforated plate in the flow path of the primary flow and / or the secondary flow generated by the rotation of the rotary cylinder 5 as described above, In the treated water, a small vortex like a Karman vortex can appear, or a slow flow state in which the vortex has disappeared away from the fluid blocking fluid can appear. In such a state, the required oxygen is continuously or intermittently supplied to the microorganisms in the water to be treated, and the microorganisms are exercised or rested to activate the biological activities, thereby improving the quality of the treated water. Make it possible to get water.

The example shown in FIG. 7 is an example in which a fluid barrier 6 made of a rod or the like is provided on the outer peripheral surface of the rotary cylinder 5 and furthermore, an uneven fluid barrier 6 is provided on the side wall surface of the processing tank. A small vortex 15 is generated near these fluid blocking fluids 6 as shown in FIG. In addition, as shown in FIG. 8A, a fixed wall-shaped fluid blocking member 6 is provided near the outer periphery of the rotating cylinder 5 so as to form a gap between the outer periphery of the rotating cylinder 5. As shown in FIG. 8 (b), when the cylindrical fluid-shielding fluid 6 is fixedly provided at the bottom of the tank inside the rotary cylinder 5, the inner surface of the rotary cylinder 5 and the outer surface of these fluid-shielding fluids 6 can be separated. Narrow gaps are formed between them, where regular Taylor vortices 15 are formed.

Further, the example shown in FIG. 9 is an example in which various shapes of fluid shielding 6 such as a round bar and a flat plate are provided in the flow in the processing tank 3. As a position where the fluid blocking fluid 6 is provided, for example,
The tank wall as shown in FIGS. 9A and 9B, and others,
It can be provided at various positions in the tank. Examples of the shape of the shielding fluid 6 include various shapes such as those shown in FIGS. 9 to 11. , Turbulence and various regular or irregular vortices as shown in FIGS. 10 and 11 are generated. here,
FIG. 12 shows a typical example of a vortex, a spherical vortex of a hill, a vortex ring, a Karman vortex or a Taylor vortex.

In the water treatment apparatus of the present invention, the fluid shielding 6 having various shapes as described above is applied to the tank wall, the inside of the tank, or the rotating cylinder 5.
In the processing tank 3, in addition to the rotating flow as the primary flow of the large flow and the vertical vortex as the secondary flow, for example, a fine vortex such as the Karman vortex street shown in FIG. Flows occur in these large streams, and streams of different types and intensities occur continuously throughout the water to be treated in the tank. As a result, necessary oxygen is distributed into the treatment tank 3 by absorbing oxygen from the surface of the water to be treated or diffusing from the bottom of the tank. Is given. In a region where the eddy current is weakened and the current is gentle, the living environment is provided that is more healthy and vibrant for the microorganisms, such as the microorganisms resting slowly. For this reason, microorganisms can be more active, and the action of purifying organic wastewater can be further promoted.

Conventionally, there is an oxidation ditch method (oxidation ditch method) as one type of biological purification treatment of wastewater. Such a method is a type of activated sludge long-time aeration method, and is a method of purifying wastewater by aeration while installing an aerator in a circulation channel and circulating wastewater. And a draft tube type. For example, as shown in FIG. 13, a rotating drum 5 installed at a horizontal position, which is a kind of a stirrer, is rotated in a treatment tank having a long channel (doughnut type) groove to circulate water to be treated such as drainage. There is a method in which oxygen is absorbed from the surface of the water to be treated while being circulated inside.

When the present invention is applied to such an oxidation groove method, the shape of the rotating drum 5 may be of a general cylindrical shape which has been conventionally used, but FIGS. It is preferable to use a rotating cylinder 5 having at least one of an upper diameter, a middle diameter, and a lower diameter as shown in FIG. The example shown in FIG. 13 will be described. In this example, unlike the example in which the rotary cylinder 5 as described above is vertically installed in the processing tank 3 described above, the rotary cylinder 5 is horizontally set. Install. As a result, as shown in FIG. 13, when the drum-shaped rotary cylinder 5 is rotated, a strong primary flow is generated near the wall surface of the circulation channel where the diameter of the cylinder 5 is large. A weaker primary flow is generated. In addition, since secondary flows are generated from the stronger primary flow to the weaker primary flow, complicated vortices such as vertical vortices and horizontal vortices different from normal circulating flows are generated in the circulation channel.

In the example shown in FIG. 14, the rotary cylinder 5 is installed vertically in the circulation channel as described above. In this case, as described in the examples shown in FIGS. 7 to 9, by rotating the rotary cylinder 5 in the horizontal direction, the horizontal rotation flow as the primary flow and the secondary rotation A vertical vortex is generated as a flow. Also in this case, as in the above case, since there is a circulating flow in the circulating water channel, a more complicated vortex and the like than in the examples shown in FIGS. In the apparatus of the present invention, since various shapes of the fluid blocking fluid 6 are provided in these flows, various small vortex flows such as Karman vortices are generated as described above. As shown in FIGS. 13 and 14, for example, the primary fluid flow path and the secondary flow flow path in the circulating water channel, such as the surface of the rotary cylinder, the side wall and the bottom surface in the tank, as shown in FIGS. May be provided in any of the above.

In the biological water treatment apparatus according to the above-described oxidation groove system to which the present invention is applied, the position and shape of the fluid blocking member 6 provided in the circulating water channel and the rotary cylinder 5 are appropriately designed to further improve the performance. Preferably, by intermittently operating the above-designed device, it is possible to reproduce various flows of water, such as rapids, babbling, and pools, as in a river in nature. That is, the biological activity of the microorganisms in the water to be treated can be made the same as in the natural world. As a result, in the water treatment device of the oxidation ditch method to which the present invention is applied, in addition to the effect of dissolving oxygen from the surface into the water to be treated, by placing a fluid barrier in various flows, the microorganisms can be swirled. In the slow flow where the eddy current disappears, the microorganisms are slowly relieved, and the treatment area becomes an environment where the microorganisms can easily live.

As described above, the treatment tank of the water treatment apparatus using the present invention for the biological method such as the activated sludge method is shown in FIGS. 7 to 9 as in the case of the apparatus used for solid-liquid separation. It has an inlet 1 for the water to be treated, which is forcibly sent by a natural flow or a pump or the like (not shown), and a drain 2 for discharging the treated water. It is preferable to have an air blowing means for sending air to forcibly dissolve oxygen. The shape of the tank is not particularly limited as long as the tank has an appropriate capacity, such as a cylinder, a rectangle, and an ellipse. For example, FIG.
As shown in FIG. 3 and FIG. 14, when used in a biological purification treatment method using an oxidized groove method, a long water channel type (doughnut type) treatment tank having a long groove is used.

[0032]

As described above, according to the present invention, the removal of water containing a large amount of suspended matter such as oil is performed by the action of the primary stream generated in the treatment tank and the secondary stream generated accompanying the primary stream. And solids such as sand can be easily and quickly separated. Further, a shielding fluid is provided, and the small vortex generated thereby can further improve the separation efficiency.
Further, according to the present invention, the inside of the treatment tank can be made a livable environment in which various flows such as a natural flow, a rapid flow, a babbling and a pool have occurred, so that the microorganisms can be more active and the microorganisms can be activated. The purification action of the water significantly progresses, and the biological purification efficiency of water can be significantly improved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram when the water treatment apparatus of the present invention is used for solid-liquid separation.

FIG. 2 is a schematic diagram when the water treatment apparatus of the present invention is used for solid-liquid separation.

FIG. 3 is a schematic diagram when the water treatment apparatus of the present invention is used for solid-liquid separation.

FIG. 4 is a schematic diagram when the water treatment apparatus of the present invention is used for solid-liquid separation.

FIG. 5 is a schematic plan view of an example of a water treatment facility using the water treatment device of the present invention.

FIG. 6 is a schematic sectional view of an example of a rotary cylinder constituting the water treatment apparatus of the present invention.

FIG. 7 is a schematic diagram when the water treatment apparatus of the present invention is used for biological treatment.

FIG. 8 is a schematic diagram when the water treatment apparatus of the present invention is used for biological treatment.

FIG. 9 is a schematic diagram when the water treatment apparatus of the present invention is used for biological treatment.

FIG. 10 is a schematic diagram showing a fluid barrier used in the water treatment apparatus of the present invention and vortices generated thereby.

FIG. 11 is a schematic diagram showing a fluid barrier used in the water treatment apparatus of the present invention and vortices generated thereby.

FIG. 12 is a schematic diagram showing types of eddies.

FIG. 13 is a schematic diagram of a case where the water treatment apparatus of the present invention is used for biological treatment using an oxidation ditch method.

FIG. 14 is a schematic view of another example when the water treatment apparatus of the present invention is used for biological treatment using an oxidation ditch method.

[Explanation of symbols]

 1: Inlet for solid-liquid mixture 2: Outlet for solids, etc. 5: Rotating cylinder 10: Processing tank

Claims (2)

(57) [Claims] 1. A processing tank having an inlet and an outlet for water to be treated, and a rotary cylinder for forcibly generating a primary flow and a secondary flow accompanying the primary flow in the water to be treated in the processing tank. Consisting of
What is claimed is: 1. A water treatment apparatus comprising: a water treatment apparatus configured to treat water to be treated by a rotating action of a rotating cylinder, wherein a floating wheel that can move up and down is provided on an outer periphery of the rotation cylinder. 2. A processing tank having an inlet and an outlet for water to be treated, and a rotary cylinder for forcibly generating a primary flow and a secondary flow accompanying the primary flow in the water to be treated in the processing tank. Consisting of
A water treatment apparatus configured to treat water to be treated by a rotating action of a rotary cylinder, wherein a plan shape of a treatment tank is any of a circle, an ellipse, a polygon, and a long channel, and A water treatment apparatus comprising a rotary cylinder provided at an eccentric position of the water treatment apparatus.