KR100972580B1 - Water treatment equipment and method using rotatable filter module - Google Patents

Abstract

PURPOSE: A water treatment device using a rotatable filtering module and a method thereof are provided to accomplish a processing object in a filtering process without a settling pond by dispersing loss of water into a filtering module. CONSTITUTION: A water treatment device using a rotatable filtering module includes a rotation central shaft(2) connected to a motor and a filtering tub(1). A filtering module(3) is mounted to surround the rotation central shaft. The rotation central shaft is connected to each motor. The filtering module comprises a granular medium(5) such as polyethylene pellets and artificial light yarns etc, a fibrous filter medium, and a filtering vessel(6) made of a perforated plate or a mesh. The floc under the water is removed by being passing through the water.

Description

Water treatment equipment and method using rotatable filtration module

The present invention is equipped with a motor capable of adjusting the rotation speed and the water treatment device is connected to the center of rotation of the motor and equipped with a filtration module composed of various media to the center of rotation to remove the floc in the water by passing the water to be treated to the filtration module; The filter module is composed of a filter medium and a filter medium, the filter medium is polyethylene pellets, sand, anthracite, artificial lightweight yarn, granules such as garnet, ilmenite, granular activated carbon, stainless steel wool, polyester cotton Various materials such as cotton wool, acrylic fiber, fibrous media such as microfiber, non-woven fabrics, and cotton media such as sponge can be used without limitation, and the media container can contain or adhere these media and allow perforated plate or mesh to pass water. Made with (Mesh).

One or two or more filtration modules are mounted on the central axis of rotation, and flocs are detained in the media in the media container by passing the water to be treated. The depth of the filter medium can be adjusted according to the thickness of the filtration module and the number of modules to be mounted. When multiple filtration modules are mounted, the size of the floc removed by the filtration module can be adjusted by configuring different filtration modules.

The shape of the filtration module can be manufactured in any shape, such as cylindrical or square, pentagonal, hexagon, etc., and can be mounted in the form of surrounding around the central axis of rotation 360 degrees or radially mounted on the central axis of rotation while having a cube or square shape. Can be.

Filtration may be performed in a manner in which the water to be treated passes through the media layer in the filtration module due to natural flow or the filtration module is rotated while the filtration module is fixed.

If the filtration takes place for a certain time, flocs are detained and accumulated in the filter media layer of the filtration module. As the floc removal efficiency decreases, head loss occurs and the water level rises. Unlike backwashing with conventional media expansion, in the present invention, through the high-speed rotation of the media module, the flow velocity of media is very large and the centrifugal force is induced to cause the floc to be retained in the media voids or attached to the media surface. It is a technique that is easily detached and washed together.

In general, agglomeration by chemicals is adopted in the Conventional water treatment process. Microorganisms, dissolved organic and inorganic substances, colloidal microparticles, etc. present in raw water are not easily precipitated by gravity, so flocculation is performed to flocculate the microparticles so that precipitation or filtration by gravity is effectively performed. Doing.

Flock formation time is relatively long (20-40 minutes) and long residence time of 2-40 hours in gravitational sedimentation basin and 20-40 minutes in sloped sedimentation basin. The water passing through this settling basin is treated within 2NTU (Nephelometric turbidity unit) and achieves target water quality of 0.1 ~ 0.5NTU or less in subsequent rapid filter paper.

In conventional rapid filter paper, granular filter media such as sand, anthracite coal, and granular activated carbon are mainly used, and when floc-containing water passes through the filter bed, the floc is transported to near the filter surface. At the stage, there are sifting, blocking and gravitational sedimentation, and the conveyed floc is removed by attaching and capturing the media surface. These microflocs are attached directly to the media surface at the beginning of the filtration, after which the flocs are again attached onto the attached flocs. Adherence on the surface of the media is known as the main mechanism of filtration, therefore, the surface area of the media and the efficient use of the media as a whole are very important.

The median surface area per unit filter area is determined by the median particle size and median layer thickness. The smaller the median particle size, the higher the floc removal rate and the higher the head loss, which requires frequent backwashing (surface filtration, surface filtration). On the other hand, if the floc is penetrated into the filter layer to remove the floc using the entire filter layer, a large amount of floc can be detained in the filter layer and the loss head is small, but there is a risk of floc leakage (internal filtration, volume). percolation).

In general, the granular media has a large particle size and a small one is mixed, so when the backwash, the media having a small particle size is positioned at the top of the media layer, and the media having a large particle size is positioned at the bottom of the media layer. In order to overcome these disadvantages, there are assembly and fine filtration, multi-layer filtration using two or more media of different particle diameters or materials.

In the above-mentioned filtration method, all of the filter layers must be connected in one filter paper, so the vertical distribution of particle size is inevitable, and the loss head in a specific layer leads to the loss head of the whole filter paper, which requires frequent backwashing. . Rapid filtration is based on the composition of the filter media and the single layer of 60 ~ 70cm thickness and the multilayer of 60 ~ 80cm, the downflow and upflow depending on the water flow direction, and the filtration speed is 120 ~ 150m / day It is within 240m / day and hydraulically divided into flow control type, water level control type, and natural equilibrium type according to the constant flow filtration and attenuation filtration according to the change of the filtration water volume, the flow control type, the water level control type, and the natural equilibrium type. There is a method of supplying to the high-cost washing tank or washing pump, and the method of supplying the water of the filter paper purified water or other filter paper, and the method of filtering the flocculated and precipitated water and the direct filtration method to filter the flocculated water without sedimentation. have.

In particular, the bottom of the existing gravity-type downflow filter paper is provided with various types of lower collecting device. The bottom collecting device is an expensive product that supports the filter bed, passes the filtered water, and acts as an upstream backwash water and air supply passage and accounts for a large portion of the cost of the filter paper facility.

The cleaning of the media is usually a combination of surface and backwashing, with air cleaning as necessary. In the case of gravity downflow filtration, a large part of the flocs are concentrated at the top of the media layer, especially since a large number of flocs accumulate on the top of the media layer in the inflow section, surface washing is performed and the flocs are discharged together with the backwash water. That is, the accumulated floc layers are fluidized and washed by spraying the pressure water toward the surface at high speed. Backwashing passes the wash water at a flow rate of 5 to 10 times the filtration speed in the opposite direction to the flow of water through which the filtration proceeds. As a result, the floc detained by the expansion of the media layer, fluidization of the media, collision between media particles, water flow, etc. It is a process that is discharged together with backwash water. The backwashing time depends on the backwashing method and the presence or absence of air washing, but the washing time with water is about 10 minutes. The amount of water required for backwashing varies, but filtered water is used for approximately one hour. The wash water is discharged to the outside of the filter paper through the wash discharge collection and trough.

In the non-expansive washing method where the backwashing flow rate is slowed and the backwashing is performed without expansion of the media layer, air and water are simultaneously used. The conventional backwashing method described above has a disadvantage in that the washing flow rate is limited in order to prevent leakage of media particles together with the washing water, and the larger the backwashing flow rate, the higher the backwashing quantity.

Membrane filtration is a process that removes particulate or dissolved materials, including flocs. Membrane filtration includes microfiltration (MF) using microfiltration membrane, ultrafiltration (UF) using ultrafiltration membrane, nanofiltration (NF) using nanofiltration membrane, reverse osmosis, RO).

Compared to the rapid filtration using particulate filter, the membrane filtration methods whose main purpose is the removal of particulate matter are precision filtration (MF) and ultrafiltration (UF). These processes are very good at removing particulate matter such as suspensions, colloids, bacteria, algae, and Cryptosporidium, and have a stable advantage in terms of treated water quality. On the other hand, energy for suction or pressurization is required, and the flux of membrane filtration has a flux of 0.5 to 1.0 m 3 / m 2 / day for 100 kpa of unit membrane differential pressure. Since this is only 1/40 to 1/150 of the rapid filtration flow rate, a relatively large membrane area is required, and thus, a large number of membrane modules is required, resulting in a very high facility and operation cost. Backwashing in membrane filtration is typically performed every few tens of minutes.

Republic of Korea Patent No. 10-0519680 (hereinafter referred to as Prior Art 1) is known "water treatment equipment having a backwash type filtration tank". When supplying raw water to the top of the media layer filled with granular media such as sand, it forms a vortex to reduce the accumulation of flock on the surface of the media layer and installs a stirrer inside the media layer to stir the media particles themselves during backwashing Present how to provide.

Republic of Korea Patent No. 10-0606479 (hereinafter referred to as prior art 2) is known a "horizontal high-speed filtering device using a fiber filter". It is a device that fills horizontally sealed airtight filtration tank with floating synthetic resin fibrous media and supplies raw water from the bottom and draws out the treated water to the top. A plurality of stirring blades are installed at the bottom of the fibrous media to wash the contaminated fibrous media. It provides a technique for cleaning by stirring while air injection in parallel. Because of the use of floating filtrate, it has the characteristic of upflow and the stirrer installed at the bottom of the filter media layer is operated during backwashing to fluidize the entire filtrate and wash the suspended matter in the fiber yarn.

Republic of Korea Patent No. 10-0893197 (hereinafter, prior art 3) is known "fiber yarn filtration device". A cartridge filled with fiber yarn media is installed on both sides of the water inlet, and the actuator installed in the center is used to filter the fiber density in the cartridge with a small filling density, ie, a pore size, and to filter the media filler density during backwashing. There is a characteristic that the washing is performed loosely, that is, by increasing the pore size.

Korean Patent Laid-Open Publication No. 2003-0045902 (hereinafter referred to as Prior Art 4) introduces a "sludge collector equipped with a backwashing function and a settling basin equipped with filtration means." The filter and the settling basin are installed adjacent to the upper and lower sides, and the sedimentary solids are removed from the settling basin by gravity, and the suspended microfloc is filtered out by the filtering means provided at the upper part of the settling basin. It has a structure that is removed, and the filtering means uses cotton, loofah, nonwoven fabric, and the like.

Korean Patent Laid-Open Publication No. 10-2004-0096846 (hereinafter referred to as Prior Art 5) introduces a "cartridge-type multilayer fiber filter device". It is designed to use the compressed chemical fiber as a single layer or multi-layer as the filter media to show the optimal filtration performance for each fiber layer. The inflow water flows from the top of the main body and flows downwards. It is a technology designed as a cartridge type that is equipped with a mechanical device for compressing and releasing the media fibers as well as a filter that can be washed and cleaned through vibration and air injection.

The existing technology and the prior art have many problems. Rapid filtration in the standard water purification process inevitably results in vertical distribution or mixing of the particle size of both the single filter media and the multi-layer filter media. As the head of the filter medium is lost, the efficient use of the entire filter medium is difficult and the backwash cycle is shortened.

In addition, a variety of media, that is, many kinds of media that are used in various ways, such as particulates, fibrous form is not mixed. It is almost impossible to increase the backwash flow rate very largely due to the problem of leakage of particulate particles by using the expansion of particulate filter, water flow and air during backwash. Expensive bottom collecting device is essential and surface washing device and washing water discharge trough are also needed.

In the prior art 1, the backwashing efficiency was increased by installing a stirrer inside the granular media layer, but the direct technological innovation of the filtration performance was not evident. As a technique of directly stirring and colliding the fibrous media with a stirring blade during washing, this also does not significantly improve the complex use of various media or the filtration efficiency, and is very similar in terms of direct stirring of the media during prior art 1 cleaning.

Prior art 3 is a technique for performing filtration using a cartridge filled with a fibrous filter media, and performing filtration and washing while compressing and relaxing the fibrous media filter layer, which is also limited in the type of media used and is more innovative than conventional methods. Can not do it.

In the prior art 4, the compressed chemical fiber is used in a multi-layered layer to achieve the optimal filtration performance for each fiber layer. However, the prior art 4 has an advanced side compared to the prior art 3, but the multilayer fiber layer is structurally integrated and the backwashing efficiency Also, it is not significantly improved compared to the prior art.

Therefore, it is possible to select each filter layer without any limitations on the physical properties, size, and type of the media such as granular media, fibrous media, nonwoven fabric, sponge, etc. It does not need a bottom collecting device and all media layers can be utilized for floc collection. While washing, there is a need for a filtration device that improves the cleaning efficiency by using a centrifugal force to increase the flow rate of the filter medium by several times more than the conventional backwashing flow rate without expanding the filter.

In order to solve the problems of the prior art as described above and to achieve the above object, a rotation center axis is connected to a motor capable of adjusting the rotation speed, and the number of target objects can pass while containing various media and the media on the rotation center axis. A water treatment device having a structure in which one or two or more filtration modules, which are made of filter media containers, is manufactured is developed.

Filtration depth is adjusted according to the thickness of the filtration module and the number of modules. When multiple filtration modules are installed, the size of the floc removed by each filtration module is controlled by filling different media for each filtration module. The filtration module eliminates the need for a bottom collecting device and gives the largest turbidity load to the filtration module near the inlet to be treated at the time of filtration to serve as a main filter media layer. It is operated in such a way that it is responsible for the main filtration function so that the entire media layer can be utilized efficiently.

In particular, the washing of the filter media layer rotates the rotating motor at a high speed with or without washing water, so that the filtration module mounted on the center of rotation rotates together with a very high cleaning flow rate, just like the dehydration principle of a washing machine. A strong centrifugal force acts on the dehydration and releases the floc from the media surface.

The amount of floc detention in the filter media is significantly increased compared to the existing technology, and by dispersing the lost head by filter module, it is possible to achieve the treatment purpose by filtration without settling basin. Since the expensive bottom collecting device is unnecessary, economic efficiency is improved, and various filters such as granular media, fiber filter media, nonwoven fabric, and sponge can be filled without mixing, so that the removed flocs can be appropriately allocated to each filtration module.

In particular, since the washing of the filtration module is made by rotating the filtration module itself at a high speed, the fast washing flow rate and the centrifugal force act simultaneously, thereby reducing the washing time and the amount of washing water. These effects can be regarded as technically and economically advantageous compared to the installation and operating costs of the rotating motor and the center of rotation.

Details of the implementation of the present invention will be described in detail with reference to FIGS. 1 to 3. The present invention is a filtration device for filtering and removing flocs formed by administering a flocculant for treating colloidal microparticles, phosphorus, microorganisms, dissolved organic and inorganic substances in a source water or sewage water. In the filtration tank (1) equipped with the water outlet (8), the washing water inlet and injection device (9), and the washing water outlet (10), a motor capable of adjusting the rotation speed and a rotational central shaft (2) connected to the motor (1) It is located in the center. The filtration tank 1 has a shape such as a circle, a square, a rectangle, or the like. The motor and the rotating shaft 2 connected to the motor are preferably round bars or square bars made of stainless steel with sufficient strength and thickness. The motor may be installed above or below the filtration tank.

A cylindrical (or square, pentagonal, hexagonal, etc.) filtration module 3 or radial filtration module 12 composed of the filter media 5 and the filter media 6 is attached to the rotation center shaft 2. One or two or more of the filtration modules 3 and 12 are mounted, and the flow of the object to be treated flows through the filtration modules 3 and 12 so that flocs in the object to be treated are filtered into the media in the filtration modules 3 and 12. Captured, detained.

The filtration modules 3 and 12 will be described in more detail. First, the filtration module 3 of FIG. 1 will be described. To form a rectangular media container (6) having a variety of shapes, such as round or square, pentagonal, hexagonal, octagonal made of perforated plate or mesh (Mesh). The above shape can be selected by considering the convenience of manufacturing, frictional resistance during rotation, vortex generation and centrifugal force during rotation. The example of FIG. 1 is one of several selectable shapes. It is necessary to use perforated plate or mesh having hole size to fill the media while the treated water passes smoothly and to prevent the leakage of media during filtration or washing.The size and strength of the pores may vary depending on the media selected. Self-explanatory Filled in the filter medium (6) produced in this way is a variety of media. Types of media that can be selected include polyethylene pellets, artificial lightweight yarn, sand, anthracite, granular activated carbon, garnet, ilmenite, particulate media, stainless steel (STS wool), polyester cotton, cotton wool, acrylic It can be selected without being limited to any materials or densities such as fibrous materials such as fibers and microfibers, and cotton materials such as nonwoven fabrics and sponges. The reason for this is that, in the related art, the selection of the media is greatly limited according to the structure of the filtration apparatus by using a method such as back washing, squeezing of the media and stirring the media itself during washing. This is because fast washing speed and centrifugal force by strong rotation can be used.

Filtration module (3) is completed by the filter medium (6) and the filter medium filled therein, the filter module (3) is a rod having a strong material such as stainless steel on the motor and the rotation center axis (2) connected to the motor or The plate 4 is attached and fixed at the top. The filtration module 3 may be equipped with an auxiliary wing 16 for causing vortex and centrifugal force during rotation. The upper part of the filtration module (3) has an open shape other than the upper fixing rod (4), and the lower part of the filtration module (3) must be watertight so that the water to be treated can only pass through the filtration module, so that the filtration module is placed on a plate made of stainless steel. It adheres closely through this welding, a bolt, etc.

As shown in FIG. 1, the first filtration module 3 is located closest to the motor and the rotational axis 2 connected to the motor, and the second filtration module 3 is positioned at a slightly spaced position from the motor. Done. In this way several filtration modules 3 can be provided. For example, if one filtration module is 20cm thick, 10cm separation distance between modules, and 2m depth of filtration, the radius for installing 6 filtration modules is 1.8m (excluding the diameter of the center of rotation of the motor) and the total filtration layer. The thickness is 1.2m. The filtration area of the first filtration module is the circumference of 10 cm from the center of rotation of the motor and the center of rotation connected to the filtration module (3) to the circumference of the filtration module (3), multiplied by 2 m depth of filtration, and the second filtration. The filtration area of the module is the value obtained by multiplying the circumference of the filter with a depth of 2 m by a circumference of 40 cm from the motor and the rotation center axis 2 connected to the motor to the filtration module 3. Therefore, as the filtration module 3 is located outside the center, the filtration area becomes larger and the passage flow rate is smaller.

It is apparent that the number of objects can be processed while flowing in the opposite direction as described above, that is, from the far side from the motor and the rotation center axis 2 connected to the motor, toward the motor and rotation center axis 2 connected to the motor.

In the state in which the filtration module 3 is fixed, the water to be treated is connected between the motor and the rotational center shaft 2 connected to the motor and the first filtration module 3 through the water inlet 7 disposed above the filtration module. Flows into the space. The initial water level is determined according to the height of the treated water outlet 8. The water passing through the first filtration module (3) passes through the second filtration module (3) to the last filtration module (3), in this process the filtration function is performed for each module. The final treated water is discharged through the treated water outlet 8.

If the flow direction of the treated water is reversed, the order of passage of the filtration module is reversed. In this case, the treated water flows out to the outlet connected to the pump near the motor and the center of rotation 2 connected to the motor.

As the filtration progresses, the amount of detention of floc increases in the media layer in the filtration module and the water level rises. Depending on the filtration mechanism, the most active floc capture occurs in the first filtration module and when it rises above the designed level, the water is automatically overflowed to the next filtration module.

In this case, the filtration is continued in the first filtration module such that a head loss equal to the head loss corresponding to the level rise is caused. Overflowed or filtered water in the first filtration module is characterized by active filtration in the second filtration module. In this way, unlike the prior art, it is possible to effectively utilize all the media layers.

If filtration continues and the final treated water quality exceeds the target water quality, filtration of the media is necessary. Opening and closing using the electric valve of the water inlet (7) to be treated, opening and closing of the treated water outlet (8), opening and closing of the washing water inlet and injection device (9), opening and closing of the washing water outlet (10), and whether the rotary motor is properly driven To wash. As an example, the motor is driven in a state in which the treatment object water inlet 7 and the treatment water outlet 8 are closed and the washing water outlet 10 is closed without inflow of the washing water. In this case, since the filtration module 3 rotates rapidly in the state submerged in water, the high flow velocity caused by the rotational force detaches the floc detained in the media and disperses it into the water. After driving the motor for a certain time, the washing water outlet 10 is opened while the driving continues and the washing water is discharged. Due to the centrifugal force by the rotation of the filtration module 3, the water in the media is dehydrated and the floc is discharged at the same time. This is the same as the dehydration principle of the washing machine. The floc in the media has the property that small microcolloidal particles are loosely adhered with a flocculant as a medium, and move with water when strong water flow is generated. As in the washing machine, rinsing dehydration is repeated, supplying clean washing water, driving the motor, and washing the process as necessary, and driving the washing water by spraying the washing water inlet and the spraying device (9) without water in the filter paper. Can be.

   The driving of the motor can be alternately clockwise, counterclockwise, clockwise and counterclockwise as necessary. In this case, as the flow direction of the washing water is changed, more effective washing of media is promoted. Efficient cleaning is aided by directly injecting microbubbles into the filtration tank or by using supersaturated dissolved wash water.

Next, the radially mounted hexagonal or rectangular filtration module of FIG. 2 will be described in detail. As shown in FIG. 2, the motor and the rotation center shaft 2 connected to this motor are located in the center of the filtration tank in the circular filtration tank 1.

A hexahedral filtration module 12 is attached to this motor and the rotational central shaft 2 connected to this motor. The hexahedral filtration module 12 has the same basic principle as the filtration module of FIG. 1. Perforated plate or mesh is used only on both sides in the direction of water passing, and four sides except for both sides of the media container (6) use stainless steel or plastic panels without holes. The filter medium is filled with the various filter mediums 5 described above, and the filtration module 12 is completed. One or two or more radially mounted filtration module to the central axis of rotation (2). In the case of the radial filtration module, two methods of filtration in which the filtration module is fixed or rotated may be adopted.

First, in the case of filtering in a rotating state, when the object to be treated flows into the filtration tank 1 while the motor is driven, that is, in a state in which the filtration module is rotated, the filtration module 12 is removed. By the rotational force, the water to be treated passes through the media in the filtration module 12, and the floc is captured and held in the media. The rotation speed of the filtration module is controlled according to the rotation speed of the motor and the filtration flow rate is determined. The treated water flows out through the treated water outlet 8. The cleaning principle and the washing method are the same as described above.

In order to filter the radial filtration module in a fixed state, the device for filtering in a rotating state is a flow guide blocking wall 13, a rotary opening and closing side watertight device 14, a motor and a rotational central shaft, and an overall raising and lowering device of the filtration module. (15) is additionally needed.

When the filtration module is fixed and filtered, all the water to be treated must pass through the media in the filtration module, so it is necessary to seal the space between the lower part of the filtration module and the side of the filtration tank (1) and the side of the filtration module (12), which were necessary for rotation during cleaning. Because there is. The space under the filtration module is lowered by using the motor, the rotary center shaft (2) connected to the motor, and the filtration module ascending and descending device (15) to close the floor. Make it possible. The side spaces are sealed and opened using the rotary switch side watertight device 14.

FIG. 3 is a structural diagram of a device for achieving side watertightness by installing a cylinder that surrounds the radial filtration module 360 degrees around the filtration module instead of the rotary switchable side watertight device 14 described in FIG. .

In this case, the central axis of rotation, the filtration module, and the cylinder rotate together, and the filter structure is required outside the cylinder.

In the case of the fixed radial filtration module (FIG. 2, 3), the filtration function of each filtration module, the distribution of the removal floc, loss head and overflow, washing method and the like are the same as in the case of the cylindrical filtration module (FIG. 1).

Example 1 Rotary Module Filtration Experiment

Pore size of W18cm × L25cm × H5cm (rotary filtration module 1), W16cm × L23cm × H5cm (rotary filtration module 2) The filtration module was filled with a plastic filter container, and the eight filtration modules were mounted on a rotating shaft (2) connected to a speed-controlled motor. Inject a flocculant (2.9mg / L as Al ₂ O ₃ ) from the mixing tank and supply Ca (OH) as a pH adjuster while supplying raw water prepared with kaolin to have a concentration of about 22 NTU as the water to be treated at a flow rate of 10 l / min. ₂ ) was injected to adjust the pH to 7, and then flocs were formed on the floc forming paper for 10 minutes, and the flocs were removed while rotating the filtration module at 5 to 8.5 rpm. Table 1 shows the turbidity removal performance of the rotary filtration modules 1 and 2. It shows that 30-50% turbidity can be removed without significant cost, i.e., by replacing paddles for existing floc formation. After the end of the turbidity removal experiment, it was possible to achieve a cleaning rate of more than 95% compared to the total amount of the turbidity removed through high-speed rotation.

accumulate
time
(hr) flux
(L / min) Rotary Filtration Module 1
(W18cm x L25cm x H5cm) Rotary Filtration Module 2
(W16cm x L23cm x H5cm) Inflow Trust
(NTU) Runoff Confidence
(NTU) Removal rate
(%) Cumulative Removal Turbidity Weight
(NTU mass) Inflow Trust
(NTU) Runoff Confidence
(NTU) Removal rate
(%) Cumulative Removal Turbidity Weight
(NTU mass) One 10 23.29 11.82 49.23 6878 11.82 6.34 46.38 3290 2 10 24.51 19.25 21.47 10035 19.25 14.5 24.68 6140 3 10 23.19 11.65 49.77 16960 11.65 4.87 58.2 10208 4 10 22.00 12.43 43.49 22702 12.43 7.17 42.31 13364 5 10 22.36 14.22 36.40 27586 14.22 7.56 46.85 17361

Example 2 Filtration Module Fixed Filtration Experiment

The filtration module is made of a polyester filter with a diameter of 30㎛ as a filter medium and filled with a porous plastic filter container of W60cm × L30cm × H20cm standard to have a porosity of 92.1%. The filtration module corresponds to one filtration module of FIG. Experiments were performed to simulate stationary filtration. The turbidity of the treated water prepared with kaolin was 7-95 NTU, the flow rate was 10 L / min-40 L / min, and the flocculation and floc formation processes were the same as in <Example 1>. Table 2 shows the turbidity removal performance according to the filtration module fixed filtration experiment. The removal rate was up to 99%, and even when the influent turbidity was increased to 95 NTU, the effluent turbidity was good as about 5 NTU, and when a plurality of filtration modules were installed as shown in FIG. Can be. The level rise after 12 hours of operation, that is, the head of loss was about 9 cm.

Cumulative time (hr) Flow rate (L / min) Fixed Filtration Module (W60cm × L30cm × H20cm) Inflow Trust
(NTU) Runoff Confidence
(NTU) Removal rate (%) Cumulative Removal Turbidity Weight
(NTU mass) One 10 7.12 2.89 59.4 2538 2 10 14.3 9.82 31.3 5226 3 10 7.87 3.73 52.6 7710 4 10 7.27 1.35 81.4 11262 5 10 7.68 0.61 92.1 15504 6 10 10.3 0.19 98.2 21570 7 10 10.3 0.12 98.8 27678 8 40 21.5 0.27 98.7 78630 9 40 20.2 0.17 99.2 126702 10 40 18.2 0.14 99.2 170046 11 40 22.3 1.17 94.8 220758 12 40 95 5.19 94.5 436302

The present invention is to replace the filter paper adopted in the existing water and sewage treatment, various industrial wastewater treatment process, and the effect of omission of the sedimentation basin through the improvement of the filtered water quality and the efficient use of the media, the need for the site, etc. It is a technology that can dramatically increase the utilization in economic terms.

1 illustrates an example of a water treatment device including a cylindrical (or angular) filtration module configured to enclose a motor 360 degrees around a central axis of rotation connected to the motor of the present invention (when water flows outward from the central axis, the filter module during filtration). Fixed, rotated during cleaning)

Figure 2 is an example of a water treatment device consisting of a filtration module radially mounted on the motor and the rotational central axis connected to the motor of the present invention (when water flows in a clockwise direction, the filtration module fixed or rotated during filtration, rotated when washing)

Figure 3 is an example of a water treatment device consisting of a filtration module radially mounted to the motor and the rotational central axis connected to the motor of the present invention and the cylindrical and water-tight joint (when the water flows in the clockwise direction, when the filtration module is fixed and washed, rotation)

<Explanation of symbols for the main parts of the drawings>

1: filtration tank 2: motor and the center of rotation connected to the motor

3: Filtration module consisting of cylindrical (or square, pentagon, hexagon, etc.) media container and media

4: Stainless steel rod for attaching and supporting the media module to the center of rotation

5: Media 6: Media container (porous plate or mesh)

7: treated water inlet (top) 8: treated water outlet (top)

9: washing water inflow and spraying device (upper, washing rotation)

10: washing water outlet (bottom) 11: treated water flow direction

12: radially mounted cube or square filtration module

13: flow guide blocking wall (needed for fixed filtration of the radial filtration module)

14: Rotary switch side watertight device (needed for fixed filtration module of the radial filter)

15: Rotational axis of the motor, the entire device for ascending and descending the filtration module (necessary for fixed filtration of the radial filtration module)

16: Vortex and Centrifugal Force Induced Wings

Claims (17)

A motor capable of adjusting the rotation speed and a rotation center shaft connected to the motor are formed inside the filtration tank, and the motor and the rotation center shaft connected to the motor are formed in a rectangular shape consisting of a filter medium and a filter container and wrapped around 360 ° around the rotation center axis. The filtration module is equipped with one or two or more, and the filtration module is an artificial lightweight yarn, polyethylene pellets, sand, anthracite, garnet, ilmenite, granular media such as granular activated carbon, stainless steel wool, polyester cotton , Cotton wool, acrylic fiber, fibrous media such as microfiber, non-woven fabric, cotton media such as sponge and filter media made of perforated plate or mesh to contain or attach the media and allow water to pass through As the water to be treated passes, the floc in the water is removed, and the centrifugal force by the high speed rotation and the rapid flow velocity and vortex in the media are formed. Water treatment device having a structural feature for cleaning the media. delete The method of claim 1, The filtration module is made of a square, pentagonal, hexagonal, etc., the water treatment device having a structural feature to wrap around 360 ° around the central axis of rotation. The method of claim 1, Wherein said filtration module has a hexagonal shape or a square shape, and has a structural feature radially mounted on a motor and a rotational central axis connected to the motor. The method of claim 4, wherein Installing a cylinder surrounding the radially mounted filtration module 360 degrees, and a water treatment device having a structural feature that tightly bonded the filtration module side and the cylinder. The method according to claim 1 or 3, The filtration module is a water treatment device, characterized in that equipped with the auxiliary wing for vortex and centrifugal force for washing. delete The method according to claim 3 or 4, Water treatment apparatus characterized in that the filtration depth is adjusted according to the filtration module thickness and the number of modules. The method according to claim 3 or 4, The water treatment device that can adjust the size of the floc to remove for each filtration module by configuring the filter medium to fill different media. delete A motor capable of adjusting the rotation speed and a rotation center shaft connected to the motor are formed inside the filtration tank, and one or two or more filtration modules composed of a filter medium and a filter container are mounted on the rotation center shaft to be processed in the filtration module. A water treatment method in which the floc in the water is removed by passing through the water, and the centrifugal force due to the high speed rotation, the rapid passage flow rate in the filter medium, and the vortex are formed to wash the filter medium. delete The method of claim 11, And a water-tightness and rotationality of the module side by using a rotationally open / closed side watertight device attached to the filtration tank wall with respect to a space between the filtration module radially mounted on the rotation center shaft and the filtration tank wall. The method of claim 11, The water treatment method of controlling the filtration flow rate passing through the filtration module by adjusting the rotational speed of the filtration module radially mounted on the rotation axis. The method of claim 11, By rapidly rotating the filtration module causing the rise of the flow velocity in the filter medium and centrifugal force to remove and wash the detained flocs. The method according to claim 11 or 15, Rotating the filtration module clockwise, counterclockwise, or clockwise and counterclockwise alternately to remove and wash the detained flocs. The method according to claim 11 or 15, When the filtration module is rotated, the washing is performed while supplying or not supplying the washing water, and during the washing process, the micro-bubble is directly injected into the filtration tank or the air is desaturated and washed by using supersaturated dissolved washing water. .

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