KR100907905B1 - Water treatment apparatus having multi-function with continuous water flow - Google Patents

Abstract

A continuous flow-typed complex water treatment apparatus is provided to maximize a filtration area by applying a plurality of cylindrical filtration membranes in a single processing tub efficiently. A continuous flow-typed complex water treatment apparatus includes the followings: a processing tub(20); a plurality of cylindrical filtration members(30) installed at the processing tub in parallel; a higher oxidation bath(45) in which ozone is supplied and having a plurality of ultraviolet ray lamp units(46); a connection pipe(44) installed at the filtration member; an injection pipe assembly(27) spraying water to a filtration membrane; and a filtered water feeding pipe(26) supplying a part of the filtered water to the injection pipe assembly.

Description

Water treatment apparatus having multi-function with continuous water flow

The present invention relates to a water treatment apparatus, and more particularly, to a water treatment apparatus capable of performing a continuous flow combination of precipitation, flotation, fine filtration and advanced oxidation treatment for raw water.

Common water treatment processes include flocculation precipitation, flotation separation, filtration and advanced oxidation processes. Agglomeration precipitation is injecting a floc-forming chemical (coagulant) into the raw water to be treated so that the colloidal particles and fine solids dispersed in the water are entangled with the flocculant to form agglomerates.

Flotation separation process is a method of floating by floating the fine air particles in the water to be attached to the solids or contaminated particles contained in the water to float to the surface to separate.

As is known, the filtration process uses a medium such as sand, activated carbon, or filtration membranes to separate contaminants contained in raw water. An advanced oxidation process irradiates ultraviolet (UV) rays while injecting ozone into the water or emitting ozone. By inducing photolysis and oxidation reaction of ozone, it is a process of decomposing, sterilizing and purifying compounds.

The conventional water treatment apparatus is designed to include the above processes individually or to combine a plurality of processes as necessary, in which case the apparatus has to be enlarged.

In addition, in order to increase the water treatment capability of the filtration apparatus, a plurality of filtration means may be installed in a single treatment tank. In such a filtration apparatus, the entire water treatment process is stopped and cleaned to discharge the contaminants accumulated in the treatment tank to the outside. It is common to do

According to another prior art, there is also proposed a configuration in which a plurality of filtration means are washed one by one while applying a reverse flow.

As described above, in the manifold single treatment tank system having a plurality of filtration membranes in a single treatment tank, it is important to maximize the water treatment capacity and to effectively discharge the contaminants accumulated in the treatment tank. To this end, it is not desirable to discharge contaminants in the treatment tank, to block the inflow of raw water or to stop some operations of the engine even in the cleaning process.

The present invention was devised in view of the above problems, and by employing a plurality of cylindrical filtration membranes in a single treatment tank, while maximizing the water treatment capacity, even if contaminants accumulate in the treatment tank, the flow of raw water or some operation of the filtration membrane It is an object of the present invention to provide a continuous flow type composite water treatment apparatus capable of discharging contaminants while maintaining a continuous flow without interruption.

Still another object of the present invention is to provide a continuous flow type composite water treatment apparatus which introduces a overflow tank and a balancing tank to uniformly set the water pressure difference with respect to the filtration membrane in the treatment tank according to the depth.

It is still another object of the present invention to provide a continuous flow combined water treatment apparatus in which each process unit is integrated so that coagulation sedimentation, flotation separation, microfiltration and advanced oxidation treatment processes for raw water can be performed in a single treatment tank. .

Continuous flow type composite water treatment apparatus according to a preferred embodiment of the present invention to achieve the above object, the raw water is introduced by the inlet pipe and the treatment tank is connected to the drain pipe is opened and closed by a drain valve on the bottom; A plurality of cylindrical filtration members provided side by side in the treatment tank with a filtration membrane for filtering the raw water; An advanced oxidizing tank having a plurality of ultraviolet lamp units installed side by side and supplied with ozone by an ozone supply means; A connection pipe for supplying the water filtered by the cylindrical filtration member to the advanced oxidation tank; An injection tube assembly installed to rotate inside the plurality of cylindrical filtration members and spraying filtered water toward the filtration membrane; And a filtered water supply pipe for supplying a part of the water filtered by the filtration member to the injection pipe assembly.

Here, the ozone supply means, ozone generator for generating ozone; And an ozone acid mechanism for injecting ozone generated by the ozone generator into the advanced oxidizing tank.

Preferably, the ozone diffuser is installed between the ultraviolet lamp units.

The present invention further includes a overflow pipe installed at the center of the treatment tank.

More preferably, the present invention further includes a geared motor that provides a driving force for rotating the injection tube assembly.

The present invention also ozone recovery pipe for sucking the residual ozone accumulated in the upper portion of the advanced oxidizing tank; And recovery ozone supply means for supplying residual ozone sucked through the ozone recovery pipe into the treatment tank.

According to a preferred embodiment of the present invention, the recovery ozone supply means includes a venturi pipe installed in a sub pipe branched from the filtered water supply pipe.

The apparatus further includes a recovery ozone diffuser for injecting ozone supplied by the recovery ozone supply means into the treatment tank.

Here, the end of the inlet pipe is configured to be connected to the distribution pipe installed in a circular shape on top of the treatment tank.

In addition, the distribution pipe is formed with a plurality of inlet pipes for introducing the raw water while being bent in one direction while extending by a predetermined length toward the bottom.

Preferably, the filtered water supply pipe is branched from the connecting pipe or the overflow tank.

The advanced oxidation bath according to the present invention may be formed integrally with the treatment bath, and preferably is formed integrally along the outer wall of the treatment bath.

Furthermore, the present invention further includes a balancing tank integrally formed along the outer wall of the treatment tank so that the purified water treated in the advanced oxidation tank is introduced, and the overflow wall is formed between the advanced oxidation tank and the balancing tank.

According to another embodiment of the present invention, the raw water is introduced by the inlet pipe and the treatment tank connected to the drain pipe is opened and closed by the drain valve at the bottom; A plurality of cylindrical filtration members provided side by side in the treatment tank with a filtration membrane for filtering the raw water; A overflow tank into which water filtered by the cylindrical filtration member is introduced through a connection pipe; A balancing tank which is installed with the overflow tank and the overflow wall interposed therebetween, and has a water outlet for discharging the filtered water to the outside; An injection tube assembly installed to rotate inside the plurality of cylindrical filtration members and spraying filtered water toward the filtration membrane; And a filtered water supply pipe for supplying a part of the water filtered by the filtration member to the injection tube assembly. The continuous flow type composite water treatment apparatus configured to set the water level L2 of the filtration member by the overflow wall. Is provided.

According to another embodiment of the present invention, the raw water is introduced by the inlet pipe and the treatment tank connected to the drain pipe is opened and closed by the drain valve at the bottom; A plurality of cylindrical filtration members provided side by side in the treatment tank with a filtration membrane for filtering the raw water; A overflow tank into which the filtered water is introduced by the cylindrical filtration member; A connection pipe extending radially from the filtration member to the overflow tank; A balancing tank which is installed with the overflow tank and the overflow wall interposed therebetween, and has a water outlet for discharging the filtered water to the outside; An injection tube assembly installed to rotate inside the plurality of cylindrical filtration members and spraying filtered water toward the filtration membrane; And a filtered water supply pipe for supplying a part of the water filtered from the overflow tank to the injection pipe assembly, wherein the overflow tank has a single space, and the balancing tank includes the overflow tank so that the overflow tank maintains a single space. Provided is a continuous flow complex water treatment apparatus formed by partitioning a portion of an interior space.

The continuous flow type composite water treatment apparatus according to the present invention can maximize the filtration area by employing a plurality of cylindrical filtration membranes in a single treatment tank, thereby maximizing the water treatment capacity despite the narrow installation space.

In addition, by providing the overflow tank and the balancing tank to maintain a constant water surface in the filtration membrane it is possible to uniformly adjust the water pressure applied to the filtration membrane according to the depth. As a result, the filtration membrane can exert a filtration function evenly over its entire length.

Further, the water treatment apparatus of the present invention, despite being a manifold single treatment tank having a plurality of cylindrical filtration membranes, removes contaminants accumulated in the treatment tank while maintaining a continuous flow without interrupting the flow of raw water or interrupting some operation of the filtration membrane. Since it can be discharged there is an advantage that can further improve the water treatment efficiency.

Furthermore, the continuous flow type composite water treatment apparatus of the present invention is provided with each unit separately because each process unit is integrally configured to perform coagulation sedimentation, flotation separation, microfiltration and advanced oxidation treatment in a single treatment tank. Compared with the conventional method, installation space and manufacturing cost can be greatly reduced, but more excellent water treatment effect can be expected.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 and 2 show a schematic configuration of a continuous flow combined water treatment apparatus according to a preferred embodiment of the present invention. In these figures, pipes through which water or ozone, etc. are transported are represented by a solid line for convenience.

The continuous flow combined water treatment apparatus according to the present invention can be used to purify water in a closed body of water, such as a pond, but is not necessarily limited to this purpose and is widely used for treating purified water, sewage, wastewater, seawater and other contaminated water. Can be applied.

The raw water to be treated by the apparatus of the present invention is introduced into the continuous flow type composite water treatment apparatus according to the embodiment of the present invention through the inlet pipe 10.

As shown, the continuous flow combined water treatment apparatus includes a treatment tank 20 for processing raw water. The treatment tank 20 is preferably formed in a cylindrical shape, but is not necessarily limited thereto. The lower end of the treatment tank 20 forms a funnel shape, and the drain pipe 11 is connected to the bottom. The drain pipe 11 is configured to be opened and closed by the drain valve 12.

The inlet pipe 10 is extended to the upper portion of the treatment tank 20 and supplies the raw water treated by the filtration pump 13 installed on the path of the inlet pipe 10. Although it is illustrated in this embodiment that the inlet pipe 10 is installed on the upper portion of the treatment tank 20, the present invention is not limited thereto, and the inlet pipe 10 may be installed at the middle or bottom of the treatment tank 20. have.

Preferably, the end of the inlet pipe 10 is connected to the distribution pipe 14 is installed in a circular shape on top of the treatment tank 20, the distribution pipe 14 is formed with a plurality of inlet pipe 15 have. The water supply pipe 15 extends to be bent in one direction (clockwise or counterclockwise) with respect to the central axis of the treatment tank 20 in a state extending from the distribution pipe 14 to the bottom by a predetermined length. In this case, the raw water introduced into the distribution pipe 14 through the inflow pipe 10 is turned in the clockwise or counterclockwise direction inside the treatment tank 20 while flowing through the inlet pipe 15.

According to the present invention, a plurality of cylindrical filtration members 30 are installed in the treatment tank 20. For example, the cylindrical filtration member 30 may be installed side by side while being spaced apart from each other in the treatment tank 20, as shown in FIG. In this embodiment, a total of nine cylindrical filtration members 30 are installed in the treatment tank 20.

The cylindrical filtration member 30 may be composed of a filtration membrane for passing water and filtering contaminant particles and a frame for supporting the filtration membrane. The filtration membrane may be configured by combining a plurality of meshes having fine holes formed in multiple layers. Typically, the filtration membrane may be made of stainless steel or synthetic resin or fiber, but is not limited thereto, and a filtration membrane of various materials capable of filtering water may be employed.

The cylindrical filtering member 30 is supported while the bottom is coupled to the bottom bracket 16. The bottom bracket 16 is a plate having a predetermined thickness, an example of which is shown in FIG.

Referring to the drawings, the bottom bracket 16 has a plurality of openings 17 formed in the treatment tank 20 to allow the contaminants contained in the water to settle downward or to secure a working space. .

In addition, a through hole 18 communicating with the cylindrical filtration member 30 is formed at a point corresponding to the installation position of the cylindrical filtration member 30, and one end of the connection pipe is connected as described below.

In FIG. 4, reference numeral 19 is a fastening hole into which a fastening member is inserted to couple the cylindrical filtration member 30.

The upper end of the cylindrical filtration member 30 is supported by the upper bracket 21 shown in FIG. The upper bracket 21 is coupled to the upper end of the treatment tank 20, similar to the above-described bottom bracket 16, the through hole 22 is coupled to the upper end of the cylindrical filtration member 30 and the working space The opening 23 is formed. Reference numeral 24 is a fastening hole into which the fastening member is inserted to couple the cylindrical filtration member 30.

In addition, a cover bracket 25 is installed on the upper bracket 21 to cover the treatment tank 20. An example of such a cover bracket 25 is illustrated in FIG. 6.

On the other hand, the plurality of cylindrical filtration member 30 is provided with a spray means for injecting water to remove the sludge or contaminants adsorbed on the filtration membrane while rotating. The injection means, the filtered water supply pipe 26 for supplying a portion of the water filtered by the filtration member 30 back into the treatment tank 20, and is installed to be rotatable in the filtration member 30, the filtered water And a spray pipe assembly 27 for spraying the filtrate water supplied through the supply pipe 26.

The filtered water supply pipe 26 is a pipe for sucking a portion of the water filtered by the cylindrical filtration member 30 and supplying it to the injection pipe assembly 27, one end of which is a connection pipe 44 (or FIG. 11 to be described later). In the case of the embodiment is connected to the overflow tank 70, the other end is connected to the injection tube assembly (27).

The cleaning pump 28 is installed on the path of the filtered water supply pipe 26 to provide a driving force to suck a part of the filtered water.

The injection pipe assembly 27, the body portion 31 is rotatably coupled to the joint coupling portion (see 29 of Figure 6) of the cover bracket 25, for example by a rotating bearing such as a swing joint, It is vertically branched from the body portion 31 includes a plurality of injection pipes 32 for injecting water toward the filtration membrane.

Here, various methods may be employed to rotatably couple the injection tube assembly 27 to the cover bracket 25.

The filtered water supply pipe 26 communicates with the body portion 31 of the injection pipe assembly 27 to supply the filtered water, and the injection pipe 32 has a plurality of injection holes 33 to inject the filtered water toward the filter membrane. Formed. Therefore, the filtered water supplied to the injection pipe 32 through the body portion 31 is injected into the filtration membrane through the injection hole (33).

The number of the injection pipes 32 is not limited by the present invention, and a plurality of the injection pipes 32 are arranged in two, three or four so as to be symmetrical with respect to the body part 31, and stably support the injection pipes. In order to support the bracket 34 can be installed between them.

More preferably, as shown in FIG. 7, the support bracket 35 is provided on the lowermost support bracket 34, and the support member 35 has a cylindrical filtering member 30 via a bearing 36. Is rotatably supported on the bottom frame 37 of the. In such a configuration, the injection pipe 32 may be smoothly rotated in a more stably supported state.

According to a preferred embodiment of the invention, the injection tube assembly 27 is mechanically rotated by a drive means such as a geared motor 38.

Specifically, the geared motor 38 is coupled to the motor coupling portion 39 at the center of the cover bracket 25 (FIG. 6). In addition, a driven gear 40 is coupled to the body 31 of the injection pipe assembly 27, and the driven gear 40 is engaged with the drive gear 41 coupled to the shaft of the geared motor 38. Thus, the injection tube assembly 27 can rotate as the geared motor 38 is driven.

More preferably, as shown in FIG. 3, the drive gear 41 of the geared motor 38 and the driven gears 40 provided in each of the plurality of injection pipe assemblies are continuously engaged with each other in a mutual train gear manner, thereby providing a single geared gear. It is also possible to rotate the plurality of injection tube assemblies by the rotation of the motor 38.

However, the connection between the geared motor 38 and the injection pipe assembly 27 is not limited to the present embodiment, it is also possible to employ a gear train or a belt, a chain and the like of various configurations and having a plurality of geared motor It is okay.

Preferably, the geared motor 38 is connected to the control unit of the control panel not shown to drive according to the speed set by the operator. The drive system by the geared motor 38 has the advantage of not only obtaining a sufficient and stable driving force but also precisely adjusting the rotational speed of the injection tube assembly as desired.

In addition, the overflow pipe 42 is installed in the center of the treatment tank 20, the overflow pipe 42 is connected to the drain pipe 11 through the overflow pipe 43. The upper height of the overflow pipe 42 determines the discharge level of the floating contaminants in the treatment tank 20.

That is, contaminants contained in the raw water introduced into the treatment tank 20 are floated on the water surface by floating separation. Such contaminants increase the concentration load acting on the filtration membrane of the cylindrical filtration member as the operation time elapses. When the water level of the inflow source water rises to the upper portion of the overflow pipe 42, the water flows into the overflow pipe 42 together with the water and is discharged through the drain pipe 11.

On the other hand, the raw water filtered by the cylindrical filtration member 30 is introduced into the advanced oxidation tank (Advanced Oxidation Tank) 45 through the connection pipe 44. 8 and 9, the connection pipe 44 is configured such that the pipes extending from the lower end of each cylindrical filtration member 30 are collected together and connected to the advanced oxidation tank 45.

In addition, the filtered water supply pipe 26 is branched to communicate with the connecting pipe 44 to supply a portion of the filtered water flowing through the connecting pipe 44 to the injection pipe assembly (27).

Preferably, the advanced oxidation tank 45 is formed integrally with the treatment tank 20. Here, the meaning that the advanced oxidation tank 45 and the treatment tank 20 are integrally formed means that at least a portion of the outer wall is in contact with each other.

More preferably, the advanced oxidation tank 45 is integrally formed along the outer wall of the treatment tank 20 as shown in the figure.

If such a configuration, there is no need for a separate space for installing the advanced oxidizing tank 45, there is no need to connect the connection pipe 44 long and install the transfer pump, the overall device becomes very compact.

The advanced oxidation tank 45 performs an AOP (Advanced Oxidation Process) process to sterilize, purify and deodorize water by the simultaneous action of ultraviolet rays and ozone (O ₃ ).

3, 8 and 10 together, a plurality of ultraviolet lamp unit 46 is installed in the vertical oxidation tank 45 in the vertical direction. The ultraviolet lamp unit 46 includes a transparent tube 47 made of a quartz tube having excellent transmittance and the like, and an ultraviolet lamp 48 mounted in the transparent tube 47. The transparent tube 47 serves to block and protect the ultraviolet lamp 48 from water.

On the other hand, the circular dotted line denoted by reference numeral 49 in Figs. 3 and 8 indicates the irradiation area of the ultraviolet lamp 48.

In addition, the continuous flow type composite water treatment apparatus according to the present invention further includes an ozone supply means for supplying ozone to the advanced oxidizing tank (45).

The ozone supply means includes an ozone generator (see 50 in FIG. 1) for generating and supplying ozone, and the advanced oxidizing tank (45) for injecting ozone supplied by the ozone generator (50) into water in a fine bubble state. ) Ozone diffuser (see 51 in FIG. 10) installed therein).

Preferably, the ozone diffuser 51 is installed between the ultraviolet lamp units 46 while being connected to a supply branch pipe 53 to which ozone is supplied through a pipe 52 connected to the ozone generator 50.

The ozone diffuser 51 is sprayed by finely dispersing ozone, and may be preferably formed in a synthetic resin form or in the form of a mechanical nozzle or membrane.

Preferably, a one-way check valve 54, a drain device 55, and the like are installed on the pipe 52 for supplying ozone to block water from flowing back.

The number, size, and installation interval of the ultraviolet lamp unit 46 and the ozone diffuser 51 are not particularly limited, and may be appropriately set according to the water treatment grade, the treatment capacity of the treatment tank, and the like.

In addition, the purified water sterilized by the advanced oxidation tank 45 is introduced into the adjacent balancing tank 56. The balancing tank 56 functions as a space for storing the final water treated in the continuous flow type composite water treatment apparatus according to the present invention to balance the amount of water received and the amount of water discharged.

Preferably, the balancing tank 56 is formed integrally with the outer wall of the treatment tank 20, like the advanced oxidation tank 45, in this case, it is possible to efficiently treat the water while minimizing the overall size of the device.

As can be seen in FIG. 10, the overflow wall 57 is formed between the advanced oxidizing tank 45 and the balancing tank 56, so that the water treated in the advanced oxidizing tank 45 is the overflow wall 57. It will be introduced into the balancing tank 56 over).

As shown in FIG. 8, a water outlet 58 is formed at the bottom of the balancing tank 56, and a water outlet pipe 59 is connected thereto.

Although the configuration of the advanced oxidation tank 45 and the balancing tank 56 has been described in detail in the present invention, these components should be construed as not limited to the description, and as another alternative, the advanced oxidation tank and the balancing tank May be separated from the treatment tank and provided in a separate space.

According to a preferred embodiment of the present invention, there is provided a means for recovering the residual components of ozone injected into the advanced oxidation tank 45 by the ozone diffuser 51 and supplying them into the treatment tank 20. The present invention has one end connected to the upper end of the advanced oxidizing tank 45, the ozone recovery pipe 60 for sucking the residual ozone accumulated in the advanced oxidizing tank 45, and suction through the ozone recovery pipe 60 And a recovery ozone supply means for supplying the remaining ozone to the inside of the treatment tank 20.

According to this embodiment, the recovery ozone supply means includes a venturi pipe 62 installed in the sub pipe 61 branched from the filtered water supply pipe 26, the other end of the ozone recovery pipe 60 is the venturi pipe Connected to 62.

Therefore, a part of the filtrate supplied to the filtrate supply pipe 26 by the operation of the cleaning pump 28 branches to the sub pipe 61 and flows, and a pressure difference generated when the filtrate passes through the venturi pipe 62. The residual ozone accumulated in the upper portion of the advanced oxidation tank 45 is sucked, and the ozone sucked in this way is mixed with the filtered water and injected into the treatment tank 20.

According to the present invention, the recovered ozone mixed with water is sent through the ozone injection pipe 63 to the recovered ozone dispersing apparatus 64 installed adjacent to the bottom bracket 16, and into the treatment tank 20 here. Sprayed.

Preferably, the recovery ozone diffuser 64 is provided at intervals in a circular direction along the inner circumferential surface of the treatment tank 20, as shown in FIG. 7, and a porous membrane is formed on the upper surface. Thus, the recovered ozone mixed with water is injected upward through the porous membrane. More preferably, the porous membrane may be made of a synthetic resin foam or a metal membrane so that the recovered ozone can be more finely injected.

In addition, the treatment tank 20 is provided with at least one inspection manhole 65, it is possible to check the state inside the treatment tank 20 and take maintenance measures.

Then, the preferred operation of the continuous flow type composite water treatment apparatus of the present invention having the above configuration will be described.

Precipitation process

For example, the raw water introduced from the closed pond is introduced into the treatment tank 20 through the inlet pipe 10 by the driving force of the filtration pump 13.

In this process, the flocculant stored in the vessel (66 in FIG. 1) may be optionally added automatically to further promote the flocculation precipitation reaction. Reference numeral 67, not described in FIG. 1, refers to a mixer in which the flocculant is evenly mixed with the raw water.

The raw water introduced into the inflow pipe 10 is evenly distributed along the distribution pipe 14 installed in the upper portion of the treatment tank 20 and introduced into the treatment tank 20 through the inlet pipe 15 formed at the lower portion thereof. do.

At this time, the water supply pipe 15 extends to be bent in one direction (clockwise or counterclockwise) with respect to the central axis of the treatment tank 20 in a state extending from the distribution pipe 14 toward the bottom by a predetermined length. The raw water flowing through the water inlet pipe 15 is pivoted inside the treatment tank 20. This turning action not only brings a uniform distribution of raw water, but also serves to collect the contaminants floating on the surface by floating separation as a center and discharge through the overflow pipe 42 as described below.

The raw water introduced into the treatment tank 20 is settled on the bottom of the treatment tank 20 by sedimentation of contaminated particles contained in the raw water during the turning process as described above. Preferably, when a flocculant is administered, flocs can be formed to precipitate even fine contaminant particles or dissolved solids dispersed in water.

Filtration and Filtration membrane  Cleaning process

Subsequently, the raw water in the treatment tank 20 is filtered while passing through the filtration membrane of the cylindrical filtration member 30. The driving force through which the filtration is performed is due to the difference between the water level inside the treatment tank 20 and the water level inside the cylindrical filtration member 30. The filtered contaminants are attached on the outer surface of the filtration membrane, and water is introduced into the cylindrical filtration member 30 through the filtration membrane.

According to the present invention, while filtering the water as described above, the plurality of cylindrical filtration member 30 can be washed at the same time. Here, it is not necessary that any one of the filtering member 30 is stopped or the function is limited while the cleaning is performed.

Specifically, the filtration membrane is washed while the raw water is filtered and the injection means is operated. That is, a part of the water purified by the cylindrical filtration member 30 is along the filtration water supply pipe 26 connected to the lower end of the cylindrical filtration member 30 by the driving force of the cleaning pump 28, the injection pipe assembly 27 Is supplied.

A portion of the filtrate supplied as described above is introduced into the injection tube assembly 27 which is rotated by the geared motor 38 in the upper portion of the treatment tank 20 and injected through the injection hole 33. At this time, the water injected from the injection hole 33 hits the filtration membrane, so that the sludge contaminants adsorbed on the outer surface of the filtration membrane are settled downward while being dropped by the injected water.

Advanced oxidation process

The filtered water filtered by the cylindrical filtration member 30 is introduced into the advanced oxidizing tank 45 along the connection pipe 44 connected to the bottom. Ultraviolet rays are irradiated into the high-grade oxidizing tank 45 by the ultraviolet lamp unit 46, and ozone generated in the ozone generator 50 is minutely diffused through the ozone diffuser 51.

As is known, ozone oxidizes organic and inorganic substances contained in raw water and oxidizes E. coli, bacteria, viruses, hepatitis and airborne bacteria (Legionella). In addition, ozone inhibits the formation of THM, a carcinogenic substance through oxidation, and removes cyanide, detergent, phenol, manganese and magnesium.

In addition, bacteria, bacteria, viruses, microorganisms, and the like present in raw water are destroyed by an ultraviolet ray having a wavelength of about 253 nm emitted from the ultraviolet lamp 48.

At the same time, OH-radicals are generated during the decomposition process in which ozone contained in dissolved ozone water is reduced to oxygen by ultraviolet rays, thereby further increasing sterilization power. OH-radicals are known to have a higher potential difference than ozone and to react evenly with almost all organic materials at a very high speed. Most organic compounds that react with OH radicals are oxidatively decomposed to water and carbon dioxide. In this way, OH-radicals effectively kill SARS, bird flu, viruses, Mycobacterium tuberculosis, O-157, Salmonella, Listeria, and other infectious flu viruses and bacteria.

After performing the advanced oxidation process as described above, the treated water overflows the overflow wall 57 and flows into the balancing tank 56, and then discharges the discharge pipe 59 connected to the bottom of the balancing tank 56. Therefore it is withdrawn to subsequent processes.

Preferably, the water discharge pipe 59 may be connected to, for example, an activated carbon adsorption treatment apparatus, and the treated water may be re-supplied to a pond or the like and used as heavy water or tap water.

Ozone Recovery and Flotation Separation Process

On the other hand, the residual ozone accumulated in the upper portion of the advanced oxidizing tank 45 is introduced into the venturi tube 62 through the ozone recovery pipe (60). That is, the residual ozone is sucked by the pressure difference generated when a part of the filtered water flows through the sub pipe 61 branched to the filtered water supply pipe 26, and the sucked ozone is mixed with the filtered water to treat the treatment tank ( 20) It is sent to the recovery ozone diffuser 64 inside.

At this time, in the normal state, the high-grade oxidizing tank 45 is in a positive pressure state, but if negative pressure occurs, the one-way check valve 68 may be opened and controlled by inflow of external air.

Subsequently, ozone supplied to the recovered ozone diffuser 64 is injected upward through the porous membrane together with the filtered water. Thus, there can be various effects obtained by injecting the recovered ozone into the treatment tank 20.

First, the contaminants adsorbed on the inner wall of the treatment tank and the outer surface of the filtration membrane are desorbed by the rise of ozone-dissociated gas.

Second, it promotes the purification of raw water by the re-reactive oxidation effect of residual ozone.

Third, it promotes the aggregation of pollutants through the oxidation reaction of ozone.

Fourth, fine contaminant particles are adsorbed onto the ozone-dissociated gas to float above the water surface. The contaminants floated on the water surface may be collected in the center of the swiveling raw water and discharged to the outside through the overflow pipe 42 as described above.

Pollutant discharge

As described above, if sedimentation of contaminants accumulates at the bottom of the treatment tank 20 during raw water treatment, the drain valve 12 is opened and contaminants are discharged.

Such pollutant discharge may be performed automatically or manually. For example, as the amount of contaminants deposited on the bottom of the treatment tank 20 increases, the filtration load increases, so that the water level inside the treatment tank 20 gradually increases, and when the water level exceeds the reference value, it is time to discharge the precipitate. Judgment and the process can be performed automatically.

According to the present invention, the contaminants deposited in the treatment tank 20 may be maintained without stopping the operation of the water treatment device or blocking the continuous flow of raw water. That is, when the drain valve 12 is opened when the pollutant is required to be discharged, the pollutant that has settled on the bottom of the treatment tank 20 is discharged to the outside through the drain pipe 11 together with the water.

The pollutants discharged to the outside may be subsequently processed using a dehydration tank or the like.

As described above, while the discharge of the contaminants proceeds, the water level inside the treatment tank 20 is lowered by a predetermined amount, but the precipitation, filtration, washing and advanced oxidation processes are still continued.

Subsequently, if it is determined that the precipitated contaminants have been discharged to some extent or after a predetermined time has elapsed, the drain valve 12 is automatically closed and the normal water treatment process is continued again.

11 and 13 show a schematic configuration of a continuous flow combined water treatment apparatus according to another preferred embodiment of the present invention. Here, the same reference numerals as in the above-described drawings indicate the same members.

The continuous flow type composite water treatment apparatus according to the present embodiment is configured to maintain the filtration water pressure uniformly throughout the filtration membrane.

Referring to the drawings, the continuous flow type composite water treatment apparatus according to the present embodiment includes a cylindrical treatment tank 20 for filtering raw water and a overflow tank for collecting and storing filtered water to maintain the filtration water pressure uniformly throughout the filtration membrane. 70) and a balancing tank 80 for controlling the amount of water discharged through the water discharge pipe 59 while temporarily storing the water flowing in from the overflow tank 70.

As in the above-described embodiment, the lower end of the treatment tank 20 forms a funnel shape, and the drain pipe 11 opened and closed by the drain valve 12 is connected to the bottom.

An inlet pipe 10 extends above the treatment tank 20, and a circular distribution pipe 14 having a plurality of inlet pipes 15 is connected to an end of the inlet pipe 10.

In addition, a plurality of cylindrical filtration members 30 are installed in the treatment tank 20, and each of the cylindrical filtration members 30 is provided with an injection pipe assembly 27 for spraying filtrate water toward the filtration membrane while rotating. Part of the filtered water is supplied to the injection pipe assembly 27 through the filtered water supply pipe 26.

According to this embodiment, the water filtered by the cylindrical filtration member 30 is introduced into the overflow tank 70 through the connecting pipe 44, and then to the balancing tank 80.

The overflow wall (72) is formed between the overflow tank (70) and the balancing tank (80), so that water flows into the balancing tank (80) beyond the overflow wall (72) when the water fills up in the overflow tank (70). do.

A water outlet 58 is formed at the bottom of the balancing tank 80, and a water outlet pipe 59 is connected thereto.

According to the present embodiment, the water level L1 in the treatment tank 20 is determined by the high water level and the preliminary planned filtration membrane concentration load head range of the overflow pipe 42 located in the center.

In addition, since the filtering member 30 and the overflow tank 70 are connected by the connecting pipe 44, the water level L2 in the filtering member 30 is set equal to the water level L3 in the overflow tank 70. , The water level L3 in the overflow tank 70 is determined by the height of the overflow wall 72.

The water level L4 in the balancing tank 80 is determined by the difference between the amount of water flowing in from the overflow tank 70 and the amount of water flowing out through the outlet 58 through the overflow wall 72.

In this case, the filtration water pressure P applied to the filtration member 30 in the treatment tank 20 is proportional to the difference between the water level L1 of the treatment tank 20 and the water level L2 of the filtration member 30. In order to look at the characteristics of the water pressure (P) in more detail with reference to FIG.

As shown in FIG. 14, when the water level L1 of the treatment tank 20 and the water level L2 of the filtration member 30 are different from each other, a relative hydraulic pressure area D1 and an absolute hydraulic pressure area D2 are formed.

The relative hydraulic pressure region D1 is a region in which water pressure is applied to the filtration member 30 by the water level L1 of the treatment tank 20, and a larger hydraulic pressure acts toward the lower portion than the upper portion. The arrow in FIG. 14 schematically shows the magnitude of the hydraulic pressure according to the depth.

On the other hand, in the absolute hydraulic region (D2), the water pressure corresponding to the difference between the water level (L1) of the treatment tank 20 and the water level (L2) of the filtration member 30 is uniformly applied, the pressure difference occurs according to the depth I never do that.

In this case, in the absolute hydraulic region D2, the filtration proceeds relatively evenly over the entire region of the filtration member 30. In the relative hydraulic region D1, the filtration is concentrated in the lower region where the hydraulic pressure is large and the hydraulic pressure is relatively weak. Minor filtration occurs in the upper region.

Further, since the filtered foreign matter is concentrated in the lower portion of the relative hydraulic region (D1) while the foreign matter is hardly accumulated in the upper portion, there is a difficulty in removing the foreign matter by the injection tube assembly.

In conclusion, the water level L2 of the filtration member 30 is a factor that affects the filtration performance, while ensuring the absolute water pressure area D2 as much as possible over the entire filtration membrane, and at the same time the water level must be kept constant.

According to the present invention, the water level L2 in the filtration member 30 is set by the overflow wall 72 formed in the overflow tank 70. That is, since the water level L2 of the filtration member 30 is the same as the water level L3 of the overflow tank 70, and the water level L3 of the overflow tank 70 is set by the height of the overflow wall 72. As a result, the level L2 of the filtration member 30 can be stably maintained by appropriately setting the height of the overflow wall 72.

Preferably, the overflow tank 70 is formed integrally with the treatment tank 20. Here, the meaning that the overflow tank 70 and the treatment tank 20 are integrally formed means that at least a portion of the outer wall is in contact with each other.

More preferably, the overflow tank 70 is integrally formed along the outer wall of the treatment tank 20 as shown in the figure.

If such a configuration, there is no need for a separate space for installing the overflow tank 70, there is no need to connect the connection pipe 44 long and install the transfer pump, the overall device becomes very compact.

In addition, the balancing tank 80 may also be integrally formed on the outer wall of the treatment tank 20, in which case it is possible to efficiently treat the water while minimizing the size of the overall device.

As another alternative, the overflow tank 70 and the balancing tank 80 may be provided in a separate space separately from the treatment tank 20.

The structure of the overflow tank, the balancing tank, the connecting pipe, etc. may be implemented in various modifications, one example of which is illustrated in FIGS. 15 and 16. Here, the same reference numerals as in the above-described drawings indicate members having the same function.

According to this embodiment, the overflow wall 70 'which has a single space is formed in the outer side wall of the process tank 20. As shown in FIG. In the present specification and claims, a 'single space' refers to a state in which internal spaces are connected to each other, that is, a state in which mixing is possible by flow, apart from a physical shape.

In addition, the connection pipe 44 'connected to the lower end of the filtration member 30 extends radially to communicate with the overflow tank 70'. In such a configuration, the filtration member 30 and the overflow tank 70 'can be connected to the shortest distance by the connecting pipe 44', so that the pipe does not have to be complicatedly designed.

The overflow tank 70 'is connected to a filtered water supply pipe 26' for supplying filtered water to the injection pipe assembly.

In addition, a part of the space inside the overflow tank 70 'is partitioned to form a balancing tank 80'. At this time, the balancing tank 80 'is formed such that the space inside the overflow tank 70' is not disconnected and still maintains a single space.

The overflow wall 72 'is formed between the balancing tank 80' and the overflow tank 70 ', and the overflow wall 72' determines the level of the overflow tank 70 '. And, the lower portion of the balancing tank (80 ') is connected to the water discharge pipe (59') for withdrawing the filtered water to the outside.

According to the present embodiment, the water filtered by the plurality of filtration members 30 provided in the treatment tank 20 flows into the overflow tank 70 'along the connection pipe 44'. In this case, since the inside of the overflow tank 70 'is connected to a single space, the introduced water is collected.

Subsequently, some of the collected water in the overflow tank 70 'is sent to the injection pipe assembly through the filtered water supply pipe 26', and the remaining water flows over the overflow wall 72 'and is inside the balancing tank 80'. Flows into.

At this time, the water level of the overflow tank 70 'is set by the overflow wall 72', and thus the water level of the filtration member 30 is set equally.

Finally, the water introduced into the balancing tank 80 'is discharged to the outside of the treatment tank 20 through the water discharge pipe 59'.

Although the present invention will be described in detail with reference to the following drawings, these drawings illustrate preferred embodiments of the present invention, and the technical concept of the present invention is not limited to the drawings and should not be interpreted.

1 is a view showing a schematic configuration of a continuous flow combined water treatment apparatus according to a preferred embodiment of the present invention.

2 is a view showing a schematic configuration of a continuous flow composite water treatment apparatus according to a preferred embodiment of the present invention.

3 is a plan view for explaining the arrangement of the drive gear, the driven gear, the ultraviolet lamp unit and the ozone diffuser in the continuous flow type composite water treatment apparatus according to the preferred embodiment of the present invention.

Figure 4 is a plan view showing a schematic configuration of the bottom bracket of the continuous flow type composite water treatment apparatus according to the preferred embodiment of the present invention.

Figure 5 is a plan view showing a schematic configuration of the upper bracket of the continuous flow complex water treatment apparatus according to a preferred embodiment of the present invention.

6 is a plan view showing a schematic configuration of a cover bracket of a continuous flow type composite water treatment apparatus according to a preferred embodiment of the present invention.

7 is a view showing the bottom portion of the cylindrical filtration member in the continuous flow composite water treatment apparatus according to a preferred embodiment of the present invention.

8 is a plan view for explaining the piping configuration of the continuous flow-type composite water treatment apparatus according to a preferred embodiment of the present invention.

FIG. 9 is a schematic cross-sectional view taken along line AA ′ of FIG. 8.

FIG. 10 is a schematic cross-sectional view taken along line BB ′ of FIG. 8.

11 is a cross-sectional view showing a schematic configuration of a continuous flow composite water treatment apparatus according to another preferred embodiment of the present invention.

FIG. 12 is a schematic plan view showing the configuration of the continuous flow type complex water treatment apparatus shown in FIG. 11.

FIG. 13 is a cross-sectional view taken along line b-b 'of FIG. 12.

14 is a schematic view showing a hydraulic pressure difference applied to the filtration member.

15 is a plan view showing a schematic configuration of a continuous flow combined water treatment apparatus according to another preferred embodiment of the present invention.

FIG. 16 is a cross-sectional view taken along line c-c 'of FIG. 15.

Claims (22)

Raw water is introduced by the inlet pipe and the treatment tank is connected to the drain pipe is opened and closed by the drain valve at the bottom; A plurality of cylindrical filtration members provided side by side in the treatment tank with a filtration membrane for filtering the raw water; An advanced oxidizing tank having a plurality of ultraviolet lamp units installed side by side and supplied with ozone by an ozone supply means; A connection pipe for supplying the water filtered by the cylindrical filtration member to the advanced oxidation tank; An injection tube assembly installed to rotate inside the plurality of cylindrical filtration members and spraying filtered water toward the filtration membrane; And And a filtrate supply pipe for supplying a part of the water filtered by the filtration member to the injection pipe assembly. The method of claim 1, The ozone supply means, Ozone generator for generating ozone; And And an ozone diffuser for injecting ozone generated by the ozone generator into the advanced oxidizing tank. The method of claim 2, The ozone diffuser is a continuous flow combined water treatment device, characterized in that installed between the ultraviolet lamp units. The method of claim 1, Continuous flow type complex water treatment apparatus further comprises a flow pipe installed in the center of the treatment tank. The method of claim 1, And a geared motor for providing a driving force to rotate the spray tube assembly. The method of claim 1, An ozone recovery pipe for sucking residual ozone accumulated in the upper portion of the advanced oxidation tank; And And a recovery ozone supply means for supplying the residual ozone sucked through the ozone recovery pipe into the treatment tank. The method of claim 6, The recovery ozone supply means, And a venturi pipe installed in a sub pipe branched from the filtrate water supply pipe. The method of claim 6, And a recovery ozone dispersing device for injecting ozone supplied by said recovery ozone supply means from the inside of said treatment tank to the upper part. The method of claim 1, Continuous flow-type complex water treatment device, characterized in that the dispensing pipe is connected to the end of the inlet pipe installed in a circular shape on top of the treatment tank. The method of claim 9, The distribution pipe is a continuous flow type complex water treatment device, characterized in that a plurality of water inlet pipes are introduced to be introduced into the raw water while being bent in one direction while extending by a predetermined length toward the bottom. The method of claim 1, The filtered water supply pipe is a continuous flow composite water treatment device, characterized in that branched from the connecting pipe. The method according to any one of claims 1 to 11, The advanced oxidation tank is a continuous flow complex water treatment device, characterized in that formed integrally with the treatment tank. Claim 13 was abandoned upon payment of a registration fee. The method of claim 12, Claim 14 was abandoned when the registration fee was paid. The method of claim 13, Further comprising a balancing tank integrally formed along the outer wall of the treatment tank so that the purified water treated in the advanced oxidation tank is introduced, Continuous flow type complex water treatment device, characterized in that the overflow wall is formed between the advanced oxidation tank and the balancing tank. The method of claim 12, And a balancing tank into which the purified water treated in the advanced oxidizing tank is introduced. Raw water is introduced by the inlet pipe and the treatment tank is connected to the drain pipe is opened and closed by the drain valve at the bottom; A plurality of cylindrical filtration members provided side by side in the treatment tank with a filtration membrane for filtering the raw water; A overflow tank into which water filtered by the cylindrical filtration member is introduced through a connection pipe; A balancing tank which is installed with the overflow tank and the overflow wall interposed therebetween, and has a water outlet for discharging the filtered water to the outside; An injection tube assembly installed to rotate inside the plurality of cylindrical filtration members and spraying filtered water toward the filtration membrane; And And a filtered water supply pipe for supplying a part of the water filtered by the filtration member to the injection pipe assembly. The continuous flow type complex water treatment device, characterized in that the water level (L2) of the filtration member is set by the overflow wall. The method of claim 16, The overflow tank is a continuous flow complex water treatment device, characterized in that formed integrally with the treatment tank. The method of claim 17, The balancing tank is a continuous flow complex water treatment device, characterized in that formed integrally with the treatment tank. Claim 19 was abandoned upon payment of a registration fee. The method of claim 17 or 18, And the overflow tank and the balancing tank are integrally formed along the outer wall of the treatment tank. Raw water is introduced by the inlet pipe and the treatment tank is connected to the drain pipe is opened and closed by the drain valve at the bottom; A plurality of cylindrical filtration members provided side by side in the treatment tank with a filtration membrane for filtering the raw water; A overflow tank into which the filtered water is introduced by the cylindrical filtration member; A connection pipe extending radially from the filtration member to the overflow tank; A balancing tank which is installed with the overflow tank and the overflow wall interposed therebetween, and has a water outlet for discharging the filtered water to the outside; An injection tube assembly installed to rotate inside the plurality of cylindrical filtration members and spraying filtered water toward the filtration membrane; And And a filtrate supply pipe for supplying a part of the water filtered from the overflow tank to the injection pipe assembly. The overflow tank has a single space, The balancing tank is a continuous flow complex water treatment device, characterized in that formed by partitioning a part of the space inside the overflow tank so that the overflow tank maintains a single space. The method of claim 20, The overflow tank is a continuous flow complex water treatment device, characterized in that formed integrally with the treatment tank. Claim 22 was abandoned upon payment of a registration fee. The method of claim 21, The overflow tank is a continuous flow complex water treatment device, characterized in that formed integrally along the outer wall of the treatment tank.

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