WO2009017380A2

WO2009017380A2 - Filteration module and the dirty/waste water treatment system and method using the filteration module as high concentration

Info

Publication number: WO2009017380A2
Application number: PCT/KR2008/004474
Authority: WO
Inventors: Byung-Jo Choi; Woo-Hyun Yoon
Original assignee: Byung-Jo Choi; Woo-Hyun Yoon
Priority date: 2007-07-31
Filing date: 2008-07-31
Publication date: 2009-02-05
Also published as: WO2009017380A3

Abstract

The invention relates to a filtration module, an advanced high concentration treatment system using the filtration module, an advanced high concentration treatment method using the filtration module, and an advanced treatment system and method for processing sewage and wastewater. A filtering material carrying microorganisms is charged in a water tank to treat sewage and wastewater, and a desorption unit detaches sludge which adheres to the filtering material in the sewage and wastewater treatment process, thus assuring increased filling factor and continuous treatment of sewage and wastewater. To this end, a plurality of filtration modules is coupled to each other, one tank is divided into an aerobic tank and an anaerobic- anoxic tank, and the tanks are filled with filtering material. By supply of sewage and wastewater into the tanks, the filtering material contacts the sewage and wastewater, thus treating the sewage and wastewater. When the filtering material is clogged with sludge, a desorption unit detaches the sludge from the filtering material. By the above process, sewage and wastewater can be continuously treated with a reduced cost.

Description

Description FILTERATION MODULE AND THE DIRTYAVASTE WATER

TREATMENT SYSTEM AND METHOD USING THE FILTERATION MODULE AS HIGH CONCENTRATION Technical Field

[1] The present invention relates to a filtration module, an advanced high concentration treatment system using the filtration module, an advanced high concentration treatment method using the filtration module, and an advanced treatment system and method for processing sewage and wastewater, and, more particularly, to a filtration module which is configured such that raw water, introduced through a through-hole of the filtration module, is caused to flow upwards through a filtering material and a carrier contained therein and then to flow downwards toward another through-hole of the filtration module, so as to highly concentrate contaminated material filtered and captured in a reaction tank, and an advanced high concentration treatment system and method using the filtration module.

[2] The present invention also relates to an advanced treatment system and method, which is configured such that a desorption unit is easily installed in such a manner as to prevent clogging of a filtering material, charged in a water tank and carrying microorganisms thereon and to increase a filling factor of the filtering material and an amount of microorganisms, and which is intended to minimize resistance of desorption members, adapted to detach sludge from a filtering material charged in a water tank, during rotation of the desorption members. Background Art

[3] Generally, with the growth of population, the concentration of people in cities and rapid industrial development, environmental contamination has become rapidly accelerated and thus deterioration of water quality has been getting a lot of attention as a serious problem. In particular, nutrient salts such as nitrogen and phosphorus causing eutrophication are introduced into rivers, lakes and the like, resulting in problems such as the destruction of aquatic ecosystems due to the death of fish and shellfish, a decrease in the availability of water resources and an increase in cost for water treatment.

[4] In order to overcome these problems, a variety of research and development are being conducted. Recently , biological treatments are being centered on and are being intensively studied for the purpose of development of an economic and environmentally-friendly treatment. In particular, processes of increasing a microbial biomass by using microbial biofilm or fixing microorganisms are being studied. [5] A rotating disk method is used as a sewage and wastewater treatment process using the microbial biofilm. The rotating disk method purifies contaminated material in a manner such that microorganisms are adhered to a rotating disk and then the rotating disk is alternately circulated between water and atmosphere to transfer oxygen in the atmosphere to the rotating disk, thus causing nitrification and denitrifiation reactions. The rotating disk method is used as an economically viable sewage and wastewater treatment because it has advantages such as easy and simple operation management and reduction of an amount of generated sludge and features a reduction of power cost.

[6] A conventional example of the rotating disk method may be found in Korean Patent

Application No. 2006-0041743, entitled "dvance Treatment System" which was filed by the present applicant.FIG. 1 is a view showing a conventional advanced treatment system, and FIG. 2 is a detailed cross-sectional view showing a reaction tank of the conventional advanced treatment system.

[7] As shown in the drawings, the conventional advanced treatment system includes a regulating tank 1 having an influent inlet Ia through which raw water is introduced into the regulating tank 1 ; a reaction tank 2 positioned at the stage subsequent to the regulating tank 1, and including a plurality of reaction plates 2a sequentially stacked onto each other on a rotating shaft 26 and desorption members 2c joined to the rotating shaft 26 between the plurality of reaction plates 2a, each of the plurality of reaction plates 2a being provided on both sides with microorganisms adhering thereto and having one or more through-holes 2a- 1, through which the raw water flows, and a circumferential rim 2a-2 formed on a peripheral edge or one side thereof; and a settlement tank 3 positioned at the stage subsequent to the reaction tank 2, and having a discharge outlet 31 through which treated water passed through the reaction tank 2 is discharged.

[8] The through-holes 2a- 1 are formed in the reaction plate 2a such that the through- holes 2a- 1 are alternately disposed at upper and lower levels with respect to the center axis. The reaction plates 2a are stacked onto each other in a manner such that one reaction plate 2a is rotated by an angle of 90 degrees from the subsequent reaction plate 2a and thus the through-holes 2a- 1 of the reaction plates are positioned in a zigzag manner. Consequently, raw water, air and sludge flow through the through- holes in a zigzag manner, thus forming a plug flow having an extended adhering flow path.

[9] The conventional advanced treatment system, which is constructed in the above- described manner, is adapted to process sewage and wastewater by passing it through the regulating tank 1, the reaction tank 2 and the settlement tank 3. In other words, in the reaction tank 2, sewage and wastewater is purified in the course of passing in a zigzag manner through the through-holes 2a- 1 defined between the reaction plates 2a.

[10] Unfortunately, the conventional advanced treatment system has a disadvantage in that a small number of microorganisms growing in the reaction tank 2 make the treatment of highly-concentrated wastewater impossible.

[11] Furthermore, the conventional advanced treatment system has another disadvantage in that filtration and microbial adhesion are achieved only onto and by the reaction plates 2a, thus decreasing treatment efficiency.

[12] In addition, the conventional advanced treatment system reaches a limitation pertaining to the treatment of a large amount of sewage and wastewater because desorption members are joined to only one rotating shaft and thus desorption of sludge adhering between the reaction plates is difficult.

[13] Meanwhile, a biological treatment process selectively coupled with physical and chemical treatment processes is predominantly used for the decomposition of organic substances in sewage and wastewater. Broadly speaking, the current biological treatment process may be classified into two processes, that is, an aerobic treatment process and an anaerobic treatment process.

[14] Although the anaerobic treatment process has advantages in that it enables the decomposition of organic substances without the need for supplying oxygen and enables the acquisition of flammable methane gas as energy, it requires a long reaction time and generates much smell.

[15] In the meantime, the aerobic treatment process has disadvantages such as energy consumption required in order to supply oxygen. However, the aerobic treatment process is extensively used in current sewage and wastewater treatment by virtue of its merits such as shortened reaction time and complete elimination of organic substances.

[16] Advanced treatment systems using a microbial adhering method which have been developed heretofore using a microbial floatation or adhesion, are excellent in reliability and economic efficiency by virtue of augmentation of microorganisms. However, the advanced treatment systems have problems in that filtering material or carriers (referred to as filtering material for brevity hereinafter) loaded in a water tank become clogged by the sludge present in sewage and wastewater over time thus deteriorating a filling fraction and causing treatment of sewage and wastewater to be difficult.

Disclosure of Invention Technical Problem

[17] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a filtration module, in which a filtering material and a carrier for the solid-liquid separation are charged in the hermetical filtration module in such a manner as to highly concentrate contaminated material and the carrier carrying microorganisms and thus to eliminate nutrient salts, and in which raw water introduced in the filtration module flows upwards trough the filtering material and the carrier and then flows downwards, wherein consecutive passage of raw water through a combination of a plurality of filtration modules results in reduction of contaminated material in the treated water, and an advanced high concentration treatment system and method using the filtration module.

[18] Another object of the present invention is to provide a filtration module which includes desorption members joined to a rotating shaft are rotated to prevent clogging of biofilm in the filtration module, and an advanced high concentration system and method using the filtration module.

[19] Still another object of the present invention is to provide a filtration module which includes a plurality of rotating shafts and desorption members joined to the respective rotating shafts to treat a large amount of sewage and wastewater, and an advanced high concentration system and method using the filtration module.

[20] A further object of the present invention is to provide a filtration module, which can be easily manufactured in large numbers by molding and fabricating module bodies, rotating shafts, desorption members and the like, in order to reduce production costs and installation costs, and an advanced high concentration system and method using the filtration module.

[21] Still a further object of the present invention is to provide an advanced treatment system and method for processing sewage and wastewater which is configured to prevent clogging of a filtering material charged in a water tank and thus to assure high filling factor and carriage of a large amount of microorganisms.

[22] Still another object of the present invention is to provide an advanced treatment system for processing sewage and wastewater which is configured such that a desorption unit for preventing clogging of a filtering material charged in a water tank and carrying microorganisms is easily installed in the water tank.

[23] Still a further object of the present invention is to provide an advanced treatment system for processing sewage and wastewater in which first and second distribution tubes adapted to introduce sewage and wastewater into a water tank are changed in structure so as to prevent filtering material from infiltrating into the first and second distribution tubes.

[24] Still another object of the present invention is to provide an advanced treatment system for processing sewage and wastewater, in which first and second distribution tubes, which are conventionally disposed in a water tank, are changed to be disposed outside of the water tank to improve a desorption efficiency.

[25] Still a further object of the present invention is to provide an advanced treatment system for processing sewage and wastewater, which is configured to minimize rotational resistance of desorption members which function to detach sludge from a filtering material charged in a water tank.

[26] Still another object of the present invention is to provide an advanced treatment system for processing sewage and wastewater, which is configured to reduce power required for introduction of sewage and wastewater into a water tank body. Technical Solution

[27] In order to accomplish the above object, the present invention provides a filtrating module comprising: a module body which is hermetically closed, the module body including a flange formed on at least one side thereof and including through-holes formed in both sides thereof, respectively, to allow treated water to flow therethrough; a filtering material disposed at a lower position in the module body; and a carrier disposed on the filtering material and carrying microorganisms thereon and defining an upper pond thereon; wherein a distance between the through-holes formed in the both sides of the module body is greater than a height between the through-holes and a level of the filtering material, so that treated water, introduced through one through-hole formed in one side of the module body, flows upwards, and thus sludge contained in the treated water is filtered by the filtering material and contaminated material filtered and captured in the carrier is highly concentrated and flows into the upper pond, and wherein the sewage and wastewater in the upper pond flows downwards and passes through the carrier and the filtering material, after which the sewage and wastewater is discharged through the other through-hole formed in the other side of the module body.

[28] The through-holes formed in the module body may be alternately disposed at opposite sides with reference to the center axis.

[29] The module body may be provided at the center with a rotating shaft to which a turning force of a motor is transmitted to rotate the rotating shaft, and a desorption member may be fixed to the rotating shaft, wherein when the filtering material and the carrier are clogged, the desorption member is rotated to detach sludge from the filtering material and the carrier.

[30] The rotating shaft may have a polygonal section, first and second fittings may be joined to opposite ends of the rotating shaft to join the rotating shaft to the module body, and a plurality of spacers and a plurality of desorption members may be alternately fitted on the rotating shaft.

[31] The plurality of desorption members may be radially arranged and fitted on the polygonal surface of the rotating shaft.

[32] The upper pond may contain a floating carrier.

[33] The carrier may be lighter than the filtering material, and may have a particle size greater than that of the filtering material. [34] The module body may include a partition wall therein to allow sewage and wastewater introduced through the through-hole to easily flow upwards.

[35] A plurality of rotating shafts may be provided in the module body for transmission of power of the motor, and desorption members may be joined to the plurality of rotating shafts, and wherein when a flow path in the filtering material and the carrier becomes clogged with sludge, the plurality of desorption members are rotated to detach the sludge from the filtering material and the carrier.

[36] Furthermore, the present invention provides an advanced high concentration treatment system comprising: a plurality of filtration modules coupled to each other, in which each of the plurality of filtration modules comprises a module body which is hermetically closed, the module body including a flange formed on at least one side thereof and including through-holes formed in both sides thereof, respectively, to allow treated water to flow therethrough; a filtering material disposed in the module body; and a carrier disposed on the filtering material in the module body, the plurality of filtrating modules being coupled to each other by joining the flanges to each other, wherein a distance between the through-holes formed in both sides of the module body is greater than a height between the through-holes and a level of the filtering material, so that treated water, introduced through one through-hole formed in one side of the module body, flows upwards, and thus sludge contained in the treated water is filtered by the filtering material and contaminated material filtered and captured in the carrier becomes highly concentrated and flows into the upper pond, wherein the sewage and wastewater in the upper pond flows downwards and passes through the carrier and the filtering material, after which the sewage and wastewater is discharged into a subsequent filtration module through the other through-hole formed in the other side of the module body, and wherein the sewage and wastewater sequentially passes through the plurality of filtration modules, with the result that contaminated material in the sewage and wastewater is repeatedly filtered and thus a concentration thereof is reduced.

[37] The through-holes formed in the module body may be alternately disposed at opposite sides with reference to the center axis.

[38] The module body may be provided at the center with a rotating shaft to which a turning force of a motor is transmitted to rotate the rotating shaft, and a desorption member may be fixed to the rotating shaft, and wherein when the filtering material and the carrier are clogged, the desorption member is rotated to detach sludge from the filtering material and the carrier.

[39] The rotating shaft may have a polygonal section, first and second fittings may be joined to the opposite ends of the rotating shaft to join the rotating shaft to the module body, and a plurality of spacers and a plurality of desorption members may be al- ternately fitted on the rotating shaft.

[40] The plurality of desorption members may be radially arranged and fitted on the polygonal surface of the rotating shaft.

[41] The upper pond may contain a floating carrier.

[42] The carrier may be lighter than the filtering material and may have a particle size greater than that of the filtering material.

[43] The module body may include a partition wall therein to allow sewage and wastewater introduced through the through-hole to easily flow upwards.

[44] A plurality of rotating shafts may be provided in the module body for transmission of power of the motor, and desorption members may be joined to the plurality of rotating shafts, and wherein when a flow path in the filtering material and the carrier is clogged with sludge, the plurality of desorption members are rotated to detach the sludge from the filtering material and the carrier.

[45] Raw water may be divided, and the respective divisions of the raw water may be supplied to the plurality of filtration modules coupled to each other, so as to promote growth of microorganisms.

[46] Furthermore, the present invention provides an advanced high concentration treatment method using a hermetical filtration module, comprising: introducing raw water into the hermetical filtration module through a through-hole formed in a side of the filtration module; causing the raw water introduced through the through-hole to flow upwards, thus primarily filtering sludge in the raw water by filtration in the filtration module; bringing the treated water, which was filtered by the filtration module, into contact with a carrier carrying microorganisms in the filtration module; causing the treated water, which was brought into contact with the carrier, to flow upwards into an upper pond in the filtration module and then to flow downwards; causing the treated water flowing downwards to pass through the carrier, thus allowing contact with the microorganisms; and causing the treated water, which was brought into contact with the microorganism, to flow downwards, thus secondarily filtering the treated water by the use of the filtering material, and then discharging the treated water through a through-hole formed in the other side of the filtration module.

[47] The advanced high concentration treatment method may further include, when a flow path of the filtering material and the carrier is clogged with sludge, rotating a desorption member joined to a rotating shaft in the filtration module to detach the sludge from the filtering material and the carrier.

[48] Furthermore, the present invention provides an advanced treatment system for processing sewage and wastewater, comprising: a water tank body which is hermetically closed, the water tank body including a partition wall at the center along a longitudinal length thereof to divide the water tank body into an aerobic tank and an anaerobic- anoxic tank; first and second distribution tubes disposed at lower positions in the aerobic tank and the anaerobic- anoxic tank, respectively, and each including a plurality of through-holes formed in an upper region thereof to allow sewage and wastewater introduced from the outside to be introduced into the water tank body; a treatment filtering material charged in the water tank body and carrying microorganisms thereon, in which sewage and wastewater introduced through the first and second distribution tubes is treated by the microorganisms while passing through the treatment filtering material; and a desorption unit for detaching sludge from the treatment filtering material charged in the water tank body so as to prevent the treatment from becoming clogged with the sludge.

[49] The desorption unit may comprise: a drive shaft penetrating through the center of the water tank body; a drive unit for rotating the rotating shaft; and a sludge desorption member joined to an outer surface of the drive shaft, and passing through the treatment filtering material to detach sludge from the treatment filtering material.

[50] The sludge desorption member may comprise a plurality of first rods arranged in at least one radial direction at regular intervals and joined to the drive shaft, and a second rod connected to ends of the plurality of first rods.

[51] Each of the plurality of first rods may include a subsidiary sludge desorption member fitted thereon, in which the subsidiary sludge desorption member has a rotating rib thereon and is rotated forwards and reversely while passing through the treatment filtering material.

[52] A length of the subsidiary sludge desorption member may be shorter than that of the first rod, so that the subsidiary sludge desorption member slides due to its own weight during rotation of the sludge desorption member.

[53] The subsidiary sludge desorption member may be divided into a plurality of sections.

[54] The drive unit may comprise a drive motor disposed at the outside of the water tank body, a drive sprocket joined to an end of a shaft of the drive motor, a driven sprocket joined to an outer surface of the drive shaft to transmit power of the drive motor, and a chain for connecting the drive sprocket with the driven sprocket.

[55] The advanced treatment system may further comprise: a sewage and wastewater supply line connected to the second distribution tube disposed in the anaerobic- anoxic tank to supply sewage and wastewater; an aerobic introduction line, which is connected at one end to the anaerobic- anoxic tank and at the other end to the aerobic tank, to transfer sewage and wastewater passing from the anaerobic- anoxic tank to the aerobic tank; a settlement tank release line, which is connected at one end to the aerobic tank and at the other end to a settlement tank, to release sewage and wastewater which has passed through the aerobic tank into the settlement tank; a returning line for returning a part of sewage and wastewater passed through the aerobic tank to the anaerobic-anoxic tank; and an air line for supplying air to the aerobic tank.

[56] The advanced treatment system may further comprise a subsidiary supply line diverging off from the sewage and wastewater supply line and connected at an end to the first distribution tube, to allow easy adhesion of microorganisms to the treatment filtering material in the aerobic tank when initially operated, wherein the subsidiary supply line is provided with a control valve which is closed to block the subsidiary supply line after adhesion of microorganisms to the treatment filtering material.

[57] Furthermore, the present invention provides an advanced treatment method of processing sewage and wastewater, comprising: supplying sewage and wastewater to an anaerobic-anoxic tank provided in a side of a water tank body through a sewage and wastewater supply line; eliminating organic substances and organic nitrogen from the sewage and wastewater, which is supplied into the anaerobic-anoxic tank through the sewage and wastewater supply line, using a treatment filtering material; introducing the sewage and wastewater which has passed through the anaerobic-anoxic tank into an aerobic tank; nitrifying ammonia in the sewage and wastewater, introduced in the aerobic tank, by passing the sewage and wastewater through a treatment filtering material carrying microorganisms; discharging a part of the sewage and wastewater which has passed through the aerobic tank and returning another part of the sewage and wastewater to the anaerobic-anoxic tank, thus conducting deni- trification; and operating a desorption unit at regular intervals to prevent the treatment filtering material in the aerobic tank and the anaerobic-anoxic tank from becoming clogged.

[58] A part of the sewage and wastewater supplied through the sewage and wastewater supply line may be introduced into the aerobic tank through a subsidiary supply line, thus allowing easy adhesion of microorganisms to the treatment filtering material in the aerobic tank when first put into operation.

[59] The sludge desorption member may comprise: support assemblies joined to both ends of the drive shaft, each of the support assemblies including a boss joined to the drive shaft, support rods radially joined at inner ends to the boss, a ring connected to outer ends of the support rods, and coupling rings fixed to an outer surface of the ring; movable shafts fixedly connected to the coupling rings positioned on both sides of the drive shaft; and a plurality of desorption pieces, each of which is connected at one end to the drive shaft and at the other end to the movable shaft.

[60] Each of the desorption pieces may comprise a drive shaft ring fitted on the drive shaft, a movable shaft ring fitted on the movable shaft, and a connecting rod connecting the drive shaft ring with the movable shaft ring.

[61] The connecting rod may include a subsidiary sludge desorption member fitted thereon and having a rotating rib, in which the subsidiary sludge desorption member is rotated forward and reversely while passing through the treatment filtering material.

[62] A length of the subsidiary sludge desorption member may be shorter than that of the connecting rod, so that the subsidiary sludge desorption member slides due to its own weight during rotation of the drive shaft.

[63] The subsidiary sludge desorption member may be divided into a plurality of sections.

[64] Each of the first and second distribution tubes may comprise: an inner tube having a plurality of first through-holes formed in a wall thereof and a influent inlet provided at one end thereof; and an outer tube concentrically disposed outside the inner tube and having a plurality of second through-holes formed in a wall thereof, in which a space defined between the inner tube and the outer tube is filled with sand, a grain of which has a diameter greater than a diameter of the first and second through-holes.

[65] The first through-holes of the inner tube may be positioned below a horizontal center line of the inner tube while the second through-holes of the outer tube may be positioned over the horizontal center line.

[66] The first and second distribution tubes, each of which is configured to have a box shape, may be externally provided beneath bottoms of the aerobic tank and the anaerobic- anoxic tank, respectively, and may communicate with internal spaces of the tanks, respectively, in which each of the first and second distribution tubes is provided at one end with an influent inlet through which sewage and wastewater flows into the distribution tube, and is filled with granules on which a filter mesh is disposed to allow sewage and wastewater supplied through the influent inlet to be introduced into the tank.

[67] Each of the first and second distribution tubes may be divided into two compartments by a partition wall, in which one of the two compartments serves as a reserving space in which sewage and wastewater introduced through the influent inlet is held and the other of the two compartments includes two or more branch pipes therein to distribute the sewage and wastewater introduced through the reserving space.

[68] Furthermore, the present invention provides an advanced treatment system for processing sewage and wastewater, comprising: a water tank body which is hermetically closed; a treatment filtering material charged in the water tank body and carrying microorganisms thereon, through which sewage and wastewater introduced in the water tank body pass, to allow treatment of the sewage and wastewater by the microorganisms; a desorption unit including a drive shaft penetrating the center of the water tank body, a drive unit for rotating the drive shaft, and a sludge desorption member fixed at one end to an outer surface of the drive shaft and extended at the other end, the sludge desorption member passing through the treatment filtering material to detach sludge adhering to the treatment filtering material; support plates joined to the drive shaft and positioned outside the desorption member; and at least one connector disposed along circumferences of the support plates to connect the support plates with the sludge desorption member.

[69] Furthermore, the present invention provides an advanced treatment system for processing sewage and wastewater, comprising: a water tank body which is hermetically closed; a treatment filtering material charged in the water tank body and carrying microorganisms thereon, through which sewage and wastewater introduced in the water tank body passes, for treating the sewage and wastewater by the microorganisms; a drive shaft penetrating through the center of the water tank body; two or more support plates joined to the drive shaft; and a plurality of desorption connectors horizontally connected between the two or more support plates and passing through the treatment filtering material to detach sludge from the treatment filtering material.

[70] The connector and the desorption connectors may have circular cross sections.

[71] The connector and the desorption connectors may have noncircular cross sections, in which a diameter of the noncircular cross section is not greater than that of a circular cross section.

[72] The advanced treatment system may further comprise an external tank in which the water tank body is disposed and which is filled with sewage and wastewater.

Advantageous Effects

[73] As described above, a filtration module and an advanced high concentration system and method using the filtration module, according to the present invention is configured such that a filtering material and a carrier are charged in the hermetical filtration module, raw water introduced in the filtration module flows upwards through the filtering material and the carrier and then flows downwards, and the treated water consecutively passes through a plurality of filtration modules in this manner, with the result that contaminated material in the treated water is reduced and contaminated material and the carrier are highly concentrated by solid-liquid separation, thus eliminating nutrient salts.

[74] Also, a filtration module and an advanced high concentration system and method using the filtration module, according to the present invention is configured to rotate desorption members joined to a rotating shaft, thus preventing clogging of biofilm in the filtration module.

[75] Furthermore, a filtration module and an advanced high concentration system and method using the filtration module, according to the present invention which includes a plurality of rotating shafts and desorption members joined to the respective rotating shaft, thus enabling treatment of a large amount of sewage and wastewater.

[76] In addition, a filtration module and an advanced high concentration system and method using the filtration module, according to the present invention which is easily manufactured by molding module bodies, rotating shafts, desorption members and the like in large numbers, thus reducing production costs and installation costs.

[77] An advanced treatment system and method for processing sewage and wastewater, according to the present invention is configured such that a water tank body is divided into an aerobic tank and an anaerobic-anoxic tank by a partition wall, is filled with a treatment material and is supplied therein with sewage and wastewater, in which when the treatment material is clogged with sludge, the sludge is detached from the treatment material using a desorption unit, and that one water tank is provided with an aerobic tank and anaerobic-anoxic tank to enable an alternated operation therebetween, thus preventing the treatment filtering material charged in the water tank and carrying microorganisms from being clogged.

[78] Also, an advanced treatment system and method for processing sewage and wastewater, according to the present invention includes a desorption unit which is joined to a rotating shaft in an assembling manner to prevent clogging of a treatment filtering material charged in a water tank and carrying microorganisms, thus allowing easy installation into the water tank.

[79] Furthermore, an advanced treatment system and method for processing sewage and wastewater, according to the present invention is configured such that first and second distribution tubes for introducing sewage and wastewater into a water tank are changed into a double tube structure, thus preventing introduction of treatment material into the first and second distribution tubes.

[80] In addition, an advanced treatment system and method for processing sewage and wastewater, according to the present invention is configured such that first and second distribution tubes, which are conventionally disposed in a water tank, are disposed outside the water tank to allow increase in radius of rotation of desorption members, thus improving a desorption efficiency.

[81] In addition, an advanced treatment system and method for processing sewage and wastewater, according to the present invention is configured such that support plates are disposed at outsides of desorption members adapted to detach sludge from a treatment filtering material charged in a water tank, and connectors which are provided to connect the support plates with the desorption members are constructed so as to minimize resistance against the treatment filtering material, thus minimizing rotational resistance of the desorption members.

[82] In addition, an advanced treatment system and method for processing sewage and wastewater, according to the present invention is configured such that a water tank body is installed in an external tank so that sewage and wastewater charged in the external tank is introduced into the water tank due to hydraulic pressure, thus reducing power required for introduction of sewage and wastewater into the water tank. Brief Description of the Drawings

[83] FIG. 1 is a view showing a conventional advanced treatment system;

[84] FIG. 2 is detailed cross-sectional view showing a reaction tank of the conventional advanced treatment system; [85] FIG. 3 is a perspective view showing a filtration module according to a first embodiment of the present invention; [86] FIG. 4 is a front cross-sectional view of the filtration module according to the first embodiment of the present invention; [87] FIG. 5 is an exploded perspective view of a rotating shaft according to the first embodiment of the present invention; [88] FIG. 6 is a plan cross-sectional view of the filtration module according to the first embodiment of the present invention; [89] FIG. 7 is a side elevation view of the filtration module according to the first embodiment of the present invention; [90] FIG. 8 is another side elevation view of the filtration module according to the first embodiment of the present invention; [91] FIG. 9 is a side elevation view of a filtration module according to a second embodiment of the present invention; [92] FIG. 10 is a front cross-sectional view of a filtration module according to a third embodiment of the present invention; [93] FIG. 11 is a perspective view of a filtration module according to a third embodiment of the present invention; [94] FIG. 12 is a cross-sectional view showing an advanced high concentration treatment system using the filtration modules according to present invention; [95] FIG. 13 is a partial perspective view of the advanced high concentration treatment system using the filtration modules according to the present invention; [96] FIG. 14 is a partial cross-sectional view of the advanced high concentration treatment system using the filtration modules according to the present invention; [97] FIG. 15 is a perspective view of an advanced treatment system for processing sewage and wastewater, according to a first embodiment of the present invention, which is partially cut away; [98] FIG. 16 is a perspective view showing an internal configuration of the advanced treatment system for processing sewage and wastewater, according to the first embodiment of the present invention; [99] FIG. 17 is a cross-sectional view of the advanced treatment system for processing sewage and wastewater, according to the first embodiment of the present invention; [100] FIG. 18 is a perspective view showing a first embodiment of a subsidiary desorption member of the advanced treatment system for processing sewage and wastewater, according to the first embodiment of the present invention; [101] FIG. 19 is a pian cross-sectional view of FIG. 18; [102] FIG. 20 is a perspective view showing a second embodiment of a subsidiary desorption member of the advanced treatment system for processing sewage and wastewater, according to the present invention; [103] FIG. 21 is a front view of FIG. 21; [104] FIG. 22 is a perspective view of an advanced treatment system for processing sewage and wastewater, according to a second embodiment of the present invention, which is partially cut away; [105] FIG. 23 is a perspective view showing an internal configuration of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention; [106] FIG. 24 is a cross-sectional view of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention; [107] FIG. 25 is a perspective view showing details of a desorption member of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention; [108] FIG. 26 is a side elevation view of a desorption unit of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention; [109] FIG. 27 is an exploded perspective view of a desorption piece of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention; [110] FIG. 28 is a cross-sectional view showing a first embodiment of a distribution tube of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention;

[111] FIG. 29 is a transverse cross-sectional view showing the first embodiment of a distribution tube of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention; [112] FIG. 30 is a perspective view showing a second embodiment of a distribution tube of the advanced treatment system for processing sewage and wastewater, according to a second embodiment of the present invention; [113] FIG. 31 is a cross-sectional view showing the second embodiment of a distribution tube of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention; [114] FIG. 32 is a cross-sectional view of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention, which includes the second embodiment of a distribution tube; [115] FIG. 33 is a perspective view showing an advanced treatment system for processing sewage and wastewater, according to a third embodiment of the present invention; [116] FIG. 34 is a partial perspective view showing the advanced treatment system for processing sewage and wastewater, according to the third embodiment of the present invention; [117] FIG. 35 is a front cross-sectional view showing the advanced treatment system for processing sewage and wastewater, according to the third embodiment of the present invention; [118] FIG. 36 is a transverse cross-sectional view showing the advanced treatment system for processing sewage and wastewater, according to the third embodiment of the present invention; [119] FIG. 37 is view showing a transverse section of a connector of the advanced treatment system for processing sewage and wastewater, according to the third embodiment of the present invention; [120] FIG. 38 is a cross-sectional view showing the advanced treatment system for processing sewage and wastewater installed in an external tank, according to the third embodiment of the present invention; [121] FIG. 39 is a perspective view showing an advanced treatment system for processing sewage and wastewater, according to a fourth embodiment of the present invention; [122] FIG. 40 is a transverse cross-sectional view showing the advanced treatment system for processing sewage and wastewater, according to the fourth embodiment of the present invention; and [123] FIG. 41 is a longitudinal cross-sectional view showing the advanced treatment system for processing sewage and wastewater, according to the fourth embodiment of the present invention.

[124] (Description of numerals in the drawings) [125] 100: filtration module [126] 110: module body [127] 111: flange [128] 112: upper pond [129] 113: partition wall [130] h: through-hole [131] 120: filtering material [132] 130: carrier [133] 140: floating carrier [134] 150: motor [135] 160: rotating shaft

[136] 170: desorption member

[137] 180, 181: first and second fittings

[138] 182: spacer

[139] 200: advanced high concentration treatment system

[140] 310: water tank body

[141] 311: partition wall

[142] 320, 330: first and second distribution rubes

[143] 340: filtering material

[144] 350: desorption unit

[145] 351: rotating shaft

[146] 352: drive unit

[147] 352a: drive motor

[148] 352b: drive sprocket

[149] 352c: driven sprocket

[150] 352d: chain

[151] 353: desorption member

[152] 353a: first rod

[153] 353b: second rod

[154] 353c: support assembly

[155] 353c- 1: boss

[156] 353c-2: support rod

[157] 353c-3: ring

[158] 353c-4: coupling ring

[159] 353d: movable shaft

[160] 353e: desorption piece

[161] 353e-l: drive shaft ring

[162] 353e-2: movable shaft ring

[163] 353e-3: connecting rod

[164] 354: subsidiary desorption member

[165] 354a: rotating rib

[166] 360: sewage and wastewater supply line

[167] 361: aerobic tank introduction line

[168] 362: settlement tank release line

[169] 362a: settlement tank

[170] 363: returning line

[171] 364: air line

[172] 365: subsidiary supply line [173] 365a: control valve

[174] 370: support plate

[175] 380: connector

[176] 381: desorption connector

[177] 390: external tank

[178] h: through-hole

[179] A: aerobic tank

[180] B: anaerobic-anoxic tank

[181] C: treatment tank

Best Mode for Carrying Out the Invention

[182] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[183] In the following detailed description, sewage and wastewater which have not been treated are referred to as raw water, and sewage and wastewater which have been treated in a filtration module are referred to as treated water, and sewage and wastewater which is discharged from a settlement tank through the filtration module is referred to as purified water.

[184] FIGS. 3 to 8 are views showing a filtration module according to the present invention, in which FIG. 3 is a perspective view showing a filtration module according to a first embodiment of the present invention, FIG. 4 is a front cross-sectional view of the filtration module according to the first embodiment of the present invention, FIG. 5 is an exploded perspective view of a rotating shaft according to the first embodiment of the present invention, FIG. 6 is a plan cross-sectional view of the filtration module according to the first embodiment of the present invention, FIG. 7 is a side elevational view of the filtration module according to the first embodiment of the present invention, and FIG. 8 is another side elevational view of the filtration module according to the first embodiment of the present invention.

[185] Referring to FIGS. 3 to 8, the filtration module according to the present invention includes a module body 110 with a hermetical hollow space defined therein, which has flanges 111 formed on one or both sides thereof and through-holes h formed in both side walls thereof, a filtering material 120 charged on the bottom of the module body 110, and a carrier 130 charged on the filtering material 120 and having microorganisms adhering thereto.

[186] Referring to FIG. 3, although the module body 110 is shown as not being closed but opened, the module body 110 is hermetically closed by joining with the adjacent module body 110.

[187] In this module body, a distance Ll between the two through-holes h is set to be greater than a height L2 between the through-hole h and a level of the charged filtering material 120. Accordingly, treated water, which is introduced through one of the two through-holes h, flows upwards, and sludge in the treated water is filtered by the filtering material 120 and is then highly concentrated in the carrier 130, followed by flowing to an upper pond 112. Thereafter, wastewater in the upper pond 112 flows downwards through the carrier 130 and the filtering material 120, and is then discharged through the other of the two through-holes h of the module body 110.

[188] As shown in FIGS. 5 and 6, the through-holes h of the module body 110 are alternately disposed at upper and lower levels with reference to the center axis, thus defining a zigzag flow path.

[189] The upper pond 112 is a space in the module body 110 in which treated water is reserved.

[190] The filtering material 120 is intended to filter sludge in raw water introduced in the module body 110, and the carrier 130 is a space in which microorganisms grow. The carrier 130 has a specific gravity less than that of the filtering material 120 but having a particle diameter greater than that of the filtering material 120, and is positioned on the filtering material 120.

[191] Preferably, the module body 110 is centrally provided with a rotating shaft 160 which is rotated by a turning force of a motor 150, and desorption members 170 are fitted on the rotating shaft 160, so that the desorption members 170 are rotated to detach sludge from the filtering material 120 and the carrier 130 when the flow paths in the filtering material 120 and the carrier 130 become clogged.

[192] The rotating shaft 160 is configured to have a polygonal section, and is provided at opposite ends thereof with first and second fittings 180, 181 which function to fit the rotating shaft 160 in the module body 110. Furthermore, the desorption members 170 and spacers 182 are alternately fitted on the rotating shaft 160 to improve reliability of a fitting therebetween.

[193] In this embodiment, the rotating shaft 160 is shown having a square section as one of various polygonal sections.

[194] The desorption members 170 are radially fitted on the rotating shaft 160 having the polygonal section such that the desorption members 170 sequentially detach sludge adhering to the filtering material 120 and the carrier 130 by rotation of the shaft 160.

[195] FIG. 9 is a side elevation view of a filtration module according to a second embodiment of the present invention.

[196] The configuration of this embodiment is substantially identical to that of the previous first embodiment, with the exception that the upper pond 112 contains floating carrier 140 to promote contact between sewage and wastewater, that is, treated water flowing in the filtration module and microorganisms, thus improving treatment efficiency. [197] FIG. 10 is a front cross-sectional view of a filtration module according to a third embodiment of the present invention.

[198] The configuration of this embodiment is substantially identical to that of the previous first embodiment, with the exception that the filtration module 110 is provided therein with a partition wall 113 so as to allow sewage and wastewater introduced through the through-hole h to easily flow upwards.

[199] In other words, the sewage and wastewater, which is introduced in the module body 110 through the through-hole h, can easily flow upwards between the through-hole h and the partition wall 113.

[200] FIG. 11 is a perspective view of a filtration module according to a third embodiment of the present invention.

[201] As shown in the drawing, the filtration module according to this embodiment is constructed such that a plurality of rotating shafts 160, which are rotated by a turning force of a motor 150 of a module body 110, is connected to the filtration module, and each of the plurality of rotating shafts 160 is provided with desorption members 170 fitted thereto. Accordingly, when flow paths in the filtering material 120 and the carrier 130 are clogged, the desorption members 170 are rotated to detach sludge from the filtering material 120 and the carrier 130. Thus, this filtration module is suitable for high-capacity advanced high concentration treatment systems.

[202] FIG. 12 is a cross-sectional view showing an advanced high concentration treatment system using the filtration modules according to the present invention, FIG. 13 is a partial perspective view of the advanced high concentration treatment system using the filtration modules according to the present invention, and FIG. 14 is a partial cross- sectional view of the advanced high concentration treatment system using the filtration modules according to the present invention.

[203] As shown in the drawings, the advanced high concentration treatment system 200 using the filtration modules according to the present invention is constructed in the following manner. A plurality of filtration modules 100 is coupled to each other by joining the flanges 111 of adjacent filtration modules, in which each of the plurality of filtration modules 100 is hermetically closed, and has the flanges 111 at one or more sides thereof and the through-holes h formed in both sides allowing treated water to flow therethrough, wherein each of the plurality of filtration modules 100 is filled with the filtering material 120 and the carrier 130 to which microorganisms adhere. In this regard, a distance Ll between the two through-holes h of each filtration module is set to be greater than a height L2 between the through-hole h and a level of the charged filtering material 120, so that treated water, which is introduced through one of the two through-holes h, flows upwards, and sludge in the treated water is filtered by the filtering material 120 and is then highly concentrated in the carrier 130, followed by flowing to the upper pond 112. Thereafter, wastewater in the upper pond 112 flows downwards through the carrier 130 and the filtering material 120, and is then discharged through the other of the two through-holes h of the module body 110, thus leading to the subsequent filtration module 100. By the repeated passage of the sewage and wastewater through the plurality of successive filtration modules 100, the concentration of contamination of the sewage and wastewater is reduced.

[204] Since the filtration module according to the present invention has been previously described in detail, the detailed description thereof is omitted herein.

[205] It is preferable that a plurality of filtration module bodies 110 be each coupled to each other by joining the adjacent flanges of the module bodies 110, thus constituting a regulating tank 210, an aerobic module 220, an anoxic module, an anaerobic module 240 and an SS filtering tank 250, respectively, and an effluent tank 260 be additionally provided on one side of the joined module bodies.

[206] The sequence and arrangement of the regulating tank 210, the aerobic module 220, the anoxic module 230, the anaerobic module 240, the SS filtration tank 250 and the effluent tank 260 may be changed if necessary, and the detailed description thereof is omitted because it does not fall within the scope of the present invention.

[207] The module bodies 110 according to the present invention are properly arranged to constitute the aerobic modules 220 and the anaerobic modules 240. The aerobic modules 220 are supplied with air while the aerobic modules 220 and the anaerobic modules 140 are supplied with a part of raw water to maintain a predetermined ratio of carbon to nitrogen (CfN), thus preventing insufficient advanced treatment due to lack of organic substances.

[208] More specifically, the plurality of module bodies 110 are selectively supplied with raw water serving as a feeding of microorganisms so as to promote growth of the microorganisms.

[209] The effluent tank 260 is provided on the outermost module body 110, so that treated water passed through the plurality of filtration modules 100 is introduced into the effluent tank 260. At this point, sludge in the treated water is settled on the bottom of the effluent tank 260 while upper purified water is discharged through an effluent outlet 261.

[210] An advanced high concentration treatment process using the filtration module and the advanced high concentration treatment system including the filtration modules, according to the present invention will now be described.

[211] First, a process of thoroughly treating contaminate material in sewage and wastewater into a high concentration through the filtration modules is described.

[212] In a first stage, raw water is introduced into the filtration module through the through-hole h. The raw water contains sludge and contaminated material. [213] In a second stage, the sewage and wastewater, which was introduced through the through-hole h, flows upwards, and at the same time the sludge contained in the sewage and wastewater is filtered by the filtering material 120.

[214] In this stage, since a distance Ll between the two through-holes h of the module body 110 is set to be greater than a height L2 between the through-hole h and a level of the charged filtering material 120, the treated water, which is introduced through one of the two through-holes h, flows upwards, while sludge in the treated water is first filtered by the filtering material 120. At this point, the treated water can more efficiently flow upwards by virtue of the partition wall 113 provided in the module body 110.

[215] In a third stage, the filtered and treated water is brought into contact with microorganisms supported to the carrier 140.

[216] In this stage, as the filtered and treated water passes through the carrier 130 placed on the filtering material 120, contaminated material in the treated water is eliminated by the organisms adhering to the carrier 130.

[217] In a fourth stage, the treated water, which has been brought into contact with the carrier 130, flows into the upper pond 112 and then flows downwards.

[218] In this stage, contaminated material, which is filtered and captured by the carrier, is highly concentrated and then after capture flows upwards into the upper pond 112. In this case, the upper pond may be provided with an additional floating carrier 140 so as to further improve treatment efficiency by microorganisms.

[219] In a fifth stage, the treated water flowing downwards passes through the carrier 130 and is thus brought into contact with the microorganisms on the carrier 130.

[220] In this stage, as the treated water in the upper pond 112 flows downwards toward the other through-hole h of the module body 110, the treated water comes into contact with the carrier 130, thus causing the treated water to come into contact with the microorganisms once again.

[221] In a sixth stage, the treated water, which was brought into contact with the microorganisms, flows downwards into the filtering material 120, and is then filtered by the filtering material 120 once again. Subsequently, the treated water is discharged through the other through-hole h.

[222] In this stage, the treated water, which has been passed through the carrier 130, is secondarily filtered by the filtering material 120, and is then discharged into the subsequent filtration module 100 through the other through-hole h. Then, the treated water, which was introduced in the subsequent filtration module 100, is repeatedly subjected to the above flow cycle, and thus filtration efficiency of the treated water is improved, leading to reduction of contaminant concentration of the treated water.

[223] In a seventh stage, when flow paths of the filtering material 120 and the carrier 130 are clogged, the desorption members 170 fixed to the rotating shaft 160 are rotated to detach sludge from the filtering material 120 and the carrier 130.

[224] In this stage, when the filtering material 120 and the carrier 130 become clogged with sludge and contaminated material due to the repeated passage of the treated water therethrough, the desorption members 170, fixed to the rotating shaft 160 which is rotated by the motor 150, detach sludge from the filtering material 120 and the carrier 130. Consequently, since an additional backwash operation may be omitted, treatment efficiency is improved.

[225] In order to treat a great deal of sewage and wastewater, a plurality of rotating shafts 160 may be provided and additional desorption members 170 may be fixed to those rotating shafts 160. Mode for the Invention

[226] FIG. 15 is a partially cut away perspective view of an advanced treatment system for processing sewage and wastewater, according to a first embodiment of the present invention, which is partially cut away, FIG. 16 is a perspective view showing an internal configuration of the advanced treatment system for processing sewage and wastewater, according to the first embodiment of the present invention, FIG. 17 is a cross-sectional view of the advanced treatment system for processing sewage and wastewater according to the first embodiment of the present invention, FIG. 18 is a perspective view showing a first embodiment of a subsidiary desorption member of the advanced treatment system for processing sewage and wastewater according to the first embodiment of the present invention, FIG. 19 is a plan cross-sectional view of FIG. 18, FIG. 20 is a perspective view showing a second embodiment of a subsidiary desorption member of the advanced treatment system for processing sewage and wastewater, according to the present invention, and FIG. 21 is a front view of FIG. 20.

[227] Referring to FIGS. 15 to 21, the advanced treatment system 300 for processing sewage and wastewater comprises a water tank body 310, first and second distribution tubes 320, 330, a treatment filtering material 340 and a desorption unit 350.

[228] The water tank body 310 is hermetically closed, and is provided at the center along a longitudinal direction with a partition wall 311, so that one of two compartments defined by the partition wall 311 serves as an aerobic tank A and the other compartment serves as an anaerobic- anoxic tank B.

[229] The aerobic tank A is intended to supply sewage, wastewater and air to the treatment filtering material 340 provided therein, and the anaerobic- anoxic tank B is intended to supply only sewage and wastewater.

[230] The first and second distribution tubes 320, 330 are disposed at lower positions in the aerobic tank A and the anaerobic- anoxic tank B, respectively, and have each a plurality of through-holes h formed in an upper surface thereof to allow sewage and wastewater supplied from the outside to be introduced into the water tank body 310.

[231] The treatment filtering material 340 is charged in the water tank body 310, wherein while sewage and wastewater introduced from the distribution tubes passes through the filtering material it is treated by microorganisms adhering to surfaces of the treatment filtering material.

[232] The desorption unit 350 is intended to detach sludge from the treatment filtering material 340 so as to prevent the treatment filtering material 340 charged in the water tank body 310 from being clogged with the sludge. The desorption unit 350 comprises a drive shaft 351 penetrating through the center of the water tank body 310, a drive unit 352 for rotating the drive shaft 351, and sludge desorption members 353 fixed to an outer surface of the drive shaft 351 which are intended to detach sludge from the treatment filtering material 340 while the sludge passes through the treatment filtering material 340.

[233] The sludge desorption members 353 includes a plurality of first rods 353a, which is fixed to the drive shaft 351 in at least one radial direction at regular intervals, and second rods 353b connected to the ends of the first rods 353a.

[234] Each of the first rods 353a includes a subsidiary sludge desorption member 354, which is fitted on an outer surface of the first rod 353a and has rotating ribs 354a formed on an outer surface thereof. Accordingly, when the sludge desorption members 353 are rotated while passing through the treatment filtering material 340, the subsidiary sludge desorption members 354 are rotated forward and reversely, thus enhancing the agitating force.

[235] A length of the subsidiary sludge desorption member 354 is set to be shorter than that of the first rod 353a such that the subsidiary sludge desorption member 354 slides along the first rod 353a by its own weight during rotation of the sludge desorption member 353, thus further enhancing the agitation force.

[236] Furthermore, the subsidiary sludge desorption member 354 may be divided into a plurality of member segments, so that the plurality of member segments are respectively rotated forward and reversely, thus further enhancing the agitating force.

[237] While the desorption unit 350 has been described with reference to an embodiment thereof, it should not be understood to be limited thereto but may be embodied as means for agitating the treatment filtering material 340 by rotation of the drive shaft 351, using for example a screw type member.

[238] The drive unit 352 comprises a drive motor 352a installed on the outside of the water tank body 310, a drive sprocket 352b joined to the end of the shaft of the drive motor 352a, a driven sprocket fixed on an outer surface of the drive shaft 351 to transmit power of the drive motor 352a to the drive shaft 351, and a chain 352d for connecting the drive sprocket 352b to the driven sprocket 352c.

[239] Meanwhile, a conduit line is provided in order to continuously supply sewage and wastewater to the water tank body 310 for the treatment of the sewage and wastewater. The conduit line comprises a sewage and wastewater supply line 360 connected to the second distribution tube 330 provided in the anaerobic- anoxic tank B to supply sewage and wastewater, an aerobic tank introduction line 361, which is connected at one end to the anaerobic- anoxic tank B and at the other end to the first distribution tube 320 provided in the aerobic tank A so as to introduce the sewage and wastewater passed through the anaerobic- anoxic tank B into the aerobic tank A, a settling tank returning line 362, which is connected at one end to the aerobic tank A and at the other end to the settling tank 362a so as to discharge the sewage and wastewater passed through the aerobic tank A to the settling tank 362a, a returning line 363 for returning a part of the sewage and wastewater passed through the aerobic tank A to the anaerobic-anoxic tank B, and an air line 364 for supplying air to the aerobic tank A.

[240] Further provided is a subsidiary supply line 365, which diverges off from the sewage and wastewater supply line 360 and is connected at the end to the first distribution tube 320, hence allowing easy adhesion of microorganisms to the treatment filtering material 340 in the aerobic tank A during the initial operation. In addition, a control valve 365a is mounted on the subsidiary supply line 365 to block the subsidiary supply line after adhesion of microorganisms to the treatment filtering material 340.

[241] More specifically, in order to enable easy adhesion of microorganisms to the treatment filtering material 340 in the aerobic tank A during the initial operation, the control valve 365a mounted on the subsidiary supply line 365 is opened to allow a part of sewage and wastewater introduced in the sewage and wastewater supply line 360 to be introduced into the aerobic tank A through the subsidiary supply line 365.

[242] A process of thoroughly treating sewage and wastewater using the advanced treatment system, according to the first embodiment of the present invention will now be described.

[243] First stage: Introduction of sewage and wastewater

[244] In a first stage, sewage and wastewater is supplied into the anaerobic-anoxic tank B provided at a side of the water tank body 310 through the sewage and wastewater supply line 360. At this point, a predetermined amount of sewage and wastewater is continuously supplied into the anaerobic-anoxic tank B.

[245] Because the adhesion of microorganisms to the treatment filtering material 340 charged in the water tank body 310 is not achieved in the beginning of the stage, sewage and wastewater is supplied into the aerobic tank A through the subsidiary supply line 365 diverged off of the sewage and wastewater supply line 360 so as to permit microorganisms to also adhere to the treatment filtering material 340 in the aerobic tank A positioned opposite the anaerobic-anoxic tank B.

[246] In other words, during the initial operation, a predetermined amount of sewage and wastewater is supplied into the anaerobic-anoxic tank B and the aerobic tank A, respectively, to enable easy adhesion of microorganisms to the treatment filtering material 340 and thus to enable the normal operation to be achieved in a short period of time. When a predetermined number of microorganisms adhere to the aerobic tank A, the control valve 365a is closed to block the subsidiary supply line 365.

[247] Second stage: Anaerobic-anoxic treatment

[248] In a second stage, organic substances and organic nitrogen is removed from sewage and wastewater, supplied into the anaerobic-anoxic tank B through the sewage and wastewater supply line 360, by virtue of the treatment filtering material 340. At this point, as the sewage and wastewater pass through the treatment filtering material 340 charged in the anaerobic-anoxic tank B, organic substances and organic nitrogen are removed from the sewage and wastewater.

[249] Third stage: Passage through aerobic tank introduction line

[250] In a third stage, the sewage and wastewater passed through the anaerobic-anoxic tank B is introduced into the aerobic tank A through the aerobic tank introduction line 361. At this point, the aerobic tank introduction line 361 is connected at one end to the anaerobic-anoxic tank B and at the other end to the first distribution tube 320 provided in the aerobic tank A.

[251] Fourth stage: Treatment in aerobic tank

[252] The sewage and wastewater introduced in the aerobic tank A passes through the treatment filtering material 340 with microorganisms adhering thereto, thus causing nitrification of organic substances and ammonia contained in the sewage and wastewater. At this point, through the air line 364 connected to the first distribution tube 320 provided in the aerobic tank A, air is supplied to microorganisms requiring oxygen.

[253] Fifth stage: Returning to anaerobic-anoxic tank

[254] A part of the sewage and wastewater passed through the aerobic tank A is discharged to the treatment tank A and another part of the sewage and wastewater is again returned to the anaerobic-anoxic tank B for denitrification. The sewage and wastewater, which is discharged to the treatment tank C, is water treated to meet the water quality criterion, and is released into rivers and the like. The sewage and wastewater, which is returned to the anaerobic-anoxic tank B, is again subjected to the treatment process for the elimination of organic substance and denitrification.

[255] Sixth stage: Operation of desorption unit

[256] The desorption unit 350 is operated at regular intervals to prevent clogging of the treatment filtering material 340 in the aerobic tank A and the anaerobic-anoxic tank B. When the drive shaft 351 penetrating through the center of the water tank body 310 is rotated by the drive unit 352, the sludge desorption members 353 radially arranged and fixed to the drive shaft 351 are rotated providing the desorption of the treatment filtering material 340 clogged with sludge.

[257] In this regard, the first rods 353a of the sludge desorption members 353 are each provided thereon with the subsidiary sludge desorption member 354 having rotating ribs 354b formed thereon, so that the subsidiary sludge desorption members 354 are rotated forward and reversely during the rotation of the sludge desorption members 353. Furthermore, a length of the subsidiary sludge desorption member 354 is set to be shorter than that of the first rod 353a, so that the subsidiary sludge desorption members 354 slide along the first rod 353a due to its own weight. As a result of the above construction, the agitating force of the desorption unit is further enhanced.

[258] FIG. 22 is a partially cut away perspective view of an advanced treatment system for processing sewage and wastewater, according to a second embodiment of the present invention, which is partially cut away, FIG. 23 is a perspective view showing an internal configuration of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention, FIG. 24 is a cross-sectional view of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention, FIG. 25 is a perspective showing details of a desorption member of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention, FIG. 26 is a side elevation view of a desorption unit of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention, FIG. 27 is an exploded perspective view of a desorption piece of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention, FIG. 28 is a cross-sectional view showing a first embodiment of a distribution tube of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention, and FIG. 29 is a transverse cross-sectional view showing the first embodiment of a distribution tube of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention.

[259] Referring to FIGS. 22 to 29, the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention, comprises a water tank body 310, which is hermetically closed, and is provided at the center along a longitudinal direction with a partition wall 311, so that one of two compartments defined by the partition wall 311 serves as an aerobic tank A and the other compartment serves as an anaerobic- anoxic tank B, first and second distribution tubes 320 and 330 which are disposed at lower positions in the aerobic tank A and the anaerobic- anoxic tank B, respectively, to allow sewage and wastewater supplied therein from the outside to be introduced into the water tank body 310, a treatment filtering material 340 charged in the water tank body 310 for treating sewage and wastewater using microorganisms adhering thereto during passage of the sewage and wastewater through the treatment filtering material 340, and a desorption unit 350 including a drive shaft 351 penetrating through the center of the water tank body 310, which is intended to detach sludge from the treatment filtering material 340 in order to prevent the treatment filtering material 340 charged in the water tank body 310 from being clogged with the sludge, a drive unit 352 for rotating the drive shaft 351, and sludge desorption members 353 fixed to an outer surface of the drive shaft 351 and adapted to pass through the treatment filtering material 340 by the drive unit 352 to detach sludge from the treatment filtering material 340 using difference between speeds of fluids

[260] The sludge desorption member 353 comprises support assemblies 353c, movable shafts 353d and desorption pieces 353e.

[261] Each of the support assemblies 353c comprises a boss 353c- 1 fitted on the drive shaft 351, support rods 353c-2 radially fixed at inner ends to the boss 353c- 1, rings 353c-3 connected to the outer ends of the support rods 353c-2, and coupling rings 353c-4. The support assemblies 353c are provided at two or more positions on both sides of the drive shaft 351. In this embodiment, three support assemblies are provided, two at both sides and one in the center of the water tank body.

[262] Preferably, the boss 353c- 1 is fitted on the drive shaft using a screw.

[263] The movable shafts 353d are fixedly connected to the coupling rings 353c-4 mounted on the support assemblies 353c to hold the coupling rings, and are threaded with nuts at opposite ends.

[264] The desorption pieces 353e are disposed in a plural number between the support assembles 353c, and each of the desorption pieces 353e is fixed at one end to the drive shaft 351 and at the other end to the movable shaft 353d. Each of the desorption pieces 353e comprises a drive shaft ring 353e-l fitted on the drive shaft 351, a movable shaft ring 353e-2 fitted on the movable shaft 353d, and a connecting rod 353e-3 connected between the drive shaft ring 353e-l and the movable shaft ring 353e-2.

[265] The connecting rod 353e-3 of the desorption piece 353e is provided thereon with subsidiary sludge desorption members 354 having rotating ribs 354a, so that the subsidiary sludge desorption members 354 are rotated forwards and reversely while passing through the treatment filtering material 340 by rotation of the drive shaft 351, thus further enhancing an agitating force.

[266] In addition, a total length of the subsidiary sludge desorption members 354 is set to be shorter than that of the connecting rod 353e-3, so that the subsidiary sludge desorption members 354 slide along the connecting rod 353e-3 due to their own weight during the rotation of the drive shaft 351, thus further enhancing an agitating force.

[267] Furthermore, since the subsidiary sludge desorption members 354 are not a single member but a plurality of members, respective subsidiary sludge desorption members 354 are rotated forward and reversely, thus further enhancing an agitating force.

[268] Meanwhile, each of the first and second distribution tubes 320, 330 comprises an inner tube 321 having a plurality of first through-holes 321a formed in a wall thereof and an influent inlet 321b provided at one end thereof, and an outer tube 322 concentrically disposed outside the inner tube 321 and having a plurality of second through-holes 322a formed in a wall thereof. The space defined between the inner tube 321 and the outer tube 322 is filled with granules 323 which have a diameter greater than a diameter of the first and second through-holes 321a, 322a.

[269] Preferably, the granules 323 include gravel which defines a path space therebetween to assure easy passage of sewage and wastewater.

[270] The first through-holes 321a of the inner tube 321 are positioned below the horizontal center line of the inner tube 321 while the second through-holes 322a of the outer tube 322 are positioned over the horizontal center line, so as to prevent sands from infiltrating thereinto.

[271] The drive unit 352 comprises a drive motor 352a provided at the outside of the water tank body 310, a drive sprocket 352b joined to the end of a shaft of the drive motor 352a, a drive sprocket 352c joined to an outer surface of the drive shaft 351 to receive the power of the drive motor 352a, and a chain 352d for connecting the drive sprocket 352b with the driven sprocket 352c.

[272] FIG. 30 is a perspective view showing a second embodiment of a distribution tube of the advanced treatment system for processing sewage and wastewater, according to a second embodiment of the present invention, FIG. 31 is a cross-sectional view showing the second embodiment of a distribution tube of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention, and FIG. 32 is a cross-sectional view of the advanced treatment system for processing sewage and wastewater, according to the second embodiment of the present invention, which includes the second embodiment of a distribution tube.

[273] Referring to FIGS. 30 to 31, first and second distribution tubes 320 and 330 are configured to have a box shape, which are externally provided beneath the bottoms of an aerobic tank A and an anaerobic-anoxic tank B, respectively, and communicate with the internal spaces of the tanks, respectively. Each of the first and second distribution tubes 320, 330 is provided at one end with an influent inlet 321b through which sewage and wastewater flows into the distribution tube, and is filled with granules 323 on which a filter mesh 326 is disposed so as to allow sewage and wastewater supplied through the influent inlet 321b to be introduced into the tanks. Since the distribution tubes are mounted on the outer surface of the tanks to permit an increase of a radius of rotation of the sludge desorption member 353, the efficiency of sludge desorption is more enhanced, compared to the case in which the distribution tubes are disposed in the tanks.

[274] Each of the first and second distribution tubes 320, 330 is divided into two compartments by a partition wall, so that one of the two compartments serves as a reserving space 324 in which sewage and wastewater introduced through the influent inlet 321b is held and the other of the two compartments includes two or more branch pipes 325 therein to distribute the sewage and wastewater introduced through the reserving space 324, thus enhancing the distribution efficiency of sewage and wastewater.

[275] Preferably, the branch pipes 325 include a plurality of nozzle holes 325a.

[276] A process of fabricating the desorption unit provided in the advanced treatment system according to the second embodiment of the present invention will now be described.

[277] First, the drive shaft 351 is supported at the center of the water tank body 310. More specifically, the drive shaft 351 is installed in a manner such that it penetrates the aerobic tank A and the anaerobic- anoxic tank B in the water tank body 310 and is connected to the drive unit 352 which supplies the rotative force.

[278] Subsequently, the support assemblies 353c are fixed to the drive shaft 351. At this point, the support assemblies 353c are previously fabricated by assembling the bosses 353c- 1, the support rods 353c-2, the rings 353c-3 and the coupling rings 353c-4 with each other. Thereafter, the bosses 353c- 1 are joined to the drive shaft 351 using screws.

[279] The movable shafts 353d are joined to the coupling rings 353c-4 mounted on an outer surface of the support assemblies 353c, and are threaded with nuts and the like.

[280] Thereafter, a plurality of desorption pieces 353e are joined to the drive shaft 351 to which the support assemblies 353c are joined, in which each of the plurality of desorption pieces 353e is composed of the drive shaft ring 353c-3, the movable shaft ring 353c-3 and a connecting rod 353e-3. At this point, the drive shaft ring 353c-3 is fitted on the drive shaft 351, the movable shaft ring 353c-3 is fitted on the movable shaft 353d, and the subsidiary sludge desorption members 354 are fitted on the connecting rod 353e-3.

[281] After the plurality of desorption pieces 353e is joined to the drive shaft 351, for the reinforcement of the movable shaft 353d, other support assemblies 353c are joined to the drive shaft 351 and at the same time a plurality of desorption pieces 353e is joined, and then the remaining support assemblies 353c are further joined to the ends of the driving shaft 351.

[282] A process of highly treating sewage and wastewater by the advanced treatment system including the desorption unit will now be described, sewage and wastewater is supplied into the anaerobic- anoxic tank B provided at a side of the water tank body 310 through the sewage and wastewater supply line 360, and organic substances and organic nitrogen are removed from the sewage and wastewater supplied in the anaerobic- anoxic tank B through the sewage and wastewater supply line 360. The sewage and wastewater, passed through the anaerobic- anoxic tank B, is introduced into the aerobic tank A through the aerobic tank introduction line 361.

[283] While the sewage and wastewater introduced in the aerobic tank A passes through the treatment filtering material 340 charged in the aerobic tank A and carrying microorganisms thereon, organic substances and ammonia are nitrified. A part of the sewage and wastewater, passed through the aerobic tank A, is discharged to the treatment tank C, and another part of the sewage and wastewater is again returned to the anaerobic- anoxic tank B.

[284] To prevent clogging of the treatment filtering material 340 in the aerobic tank A and the anaerobic- anoxic tank B caused by repetition of the above cycle, the desorption unit 350 is operated at regular intervals. In this stage, the drive shaft 351 penetrating the center of the water tank body 310 is rotated by the drive unit 352, with the result that desorption of the clogged treatment filtering material 340 is conducted by the support assemblies and the desorption pieces joined to the drive shaft 351.

[285] At this point, during the rotation of the sludge desorption members 353, the subsidiary sludge desorption members 354 fitted on the connecting rods 353e-3 of the desorption pieces 353e are rotated forward and reversely while passing through the treatment filtering material 340. The total length of the subsidiary sludge desorption members 354 is designed to be shorter than that of the connecting rods 353e-3, so that the subsidiary sludge desorption members 354 slide along the connecting rods 353e-3 due to their own weight during the rotation of the sludge desorption members 353. As a result of these configurations, an agitating force is enhanced.

[286] FIG. 33 is a perspective view showing an advanced treatment system for processing sewage and wastewater, according to a third embodiment of the present invention, FIG. 34 is a partial perspective view showing the advanced treatment system for processing sewage and wastewater, according to the third embodiment of the present invention, FIG. 35 is a front cross-sectional view showing the advanced treatment system for processing sewage and wastewater, according to the third embodiment of the present invention, FIG. 36 is a transverse cross-sectional view showing the advanced treatment system for processing sewage and wastewater, according to the third embodiment of the present invention, FIG. 37 is view showing a transverse section of a connector of the advanced treatment system for processing sewage and wastewater, according to the third embodiment of the present invention, and FIG. 38 is a cross-sectional view showing the advanced treatment system for processing sewage and wastewater installed in an external tank, according to the third embodiment of the present invention.

[287] Referring to FIGS. 33 to 38, the advanced treatment system 300 for processing sewage and wastewater comprises a water tank body 310, a treatment filtering material 340, a desorption unit 350, a support plate 370 and connectors 380.

[288] The water tank body 310 is hermetically closed, and includes influent inlets 312 through which sewage and wastewater is introduced and an effluent outlet 313.

[289] In a preferred embodiment of the present invention, the water tank body is divided into two compartments by a central partition wall 311, in which one of the two compartments serves as an aerobic tank A and the other compartment serves as an anaerobic- anoxic tank B.

[290] The aerobic tank A is intended to supply sewage and wastewater and air to microorganisms present on a treatment filtering material 340 in the tank, which is to be described later, while the anaerobic-anoxic tank B is intended to supply only sewage and wastewater.

[291] The aerobic tank A and the anaerobic-anoxic tank B are provided at bottoms thereof with first and second distribution tubes 320 and 330, respectively, and the first and second distribution tubes 320 and 330 include a plurality of through-holes formed in upper regions thereof to allow sewage and wastewater supplied from the outside to be introduced into the water tank body 310.

[292] The treatment filtering material 340 is charged in the water tank body 310, and functions to treat sewage and wastewater passing therethrough using microorganisms adhering to its surface.

[293] The desorption unit 350 is intended to conduct desorption of the treatment filtering material 340 charged in the water tank body 310, thus preventing clogging of the treatment filtering material 340. The desorption unit 350 comprises a drive shaft 351 penetrating through the center of the water tank body 310, a drive unit 352 for rotating the drive shaft 351, and sludge desorption members 353, each of which is fixed at one end to an outer surface of the drive shaft 351 and is extended at the other end, and which passes through the treatment filtering material 340 by the drive unit 352, thus detaching sludge from the treatment filtering material 340.

[294] The drive unit 352 comprises a drive motor 352a installed at the outside of the water tank body 310, a drive sprocket 352b fixed to the end of a shaft of the drive motor 352a, a driven sprocket 352c fixed to an outer surface of the drive shaft 351 for receiving power of the drive motor 352a, and a chain 352d for connecting the drive sprocket 352b with the driven sprocket 352c.

[295] The support plates 370 are joined to the drive shaft 351 such that they are positioned at the outsides of the outermost desorption members 353.

[296] The sludge desorption members 353 are configured to be thinner than a thickness of the support plate 370 so as to receive the minimum resistance in the course of detaching sludge from the treatment filtering material 340 charged in the water tank body 310.

[297] The connectors 380 are disposed at one or more locations along the circumference of the support plates 370 to connect the support plates 370 with the sludge desorption members 353.

[298] The connectors 380 may have a circular section, or may have noncircular sections rather than the circular section but having a diameter not greater than that of the circular section, so that a contact area between the noncircular connectors and the treatment filtering material is smaller than that between the circular connectors and the treatment filtering material, thus reducing resistance against the treatment filtering material (See FIG. 37).

[299] The water tank body 310 is positioned in the external tank 390 which is filled with sewage and wastewater such that the sewage and wastewater charged in the external tank 390 is easily introduced into the water tank body 310 with the aid of hydraulic pressure of the sewage and wastewater, thus enabling easy introduction of sewage and wastewater into the water tank body 310 using relatively less power.

[300] FIG. 39 is a perspective view showing an advanced treatment system for processing sewage and wastewater, according to a fourth embodiment of the present invention; FIG. 40 is a transverse cross-sectional view showing the advanced treatment system for processing sewage and wastewater, according to the fourth embodiment of the present invention; and FIG. 41 is a longitudinal cross-sectional view showing the advanced treatment system for processing sewage and wastewater, according to the fourth embodiment of the present invention.

[301] For reference, since the fourth embodiment is differentiated from the third embodiment only in respect of the internal desorption unit but is identical to the third embodiment as concerns the external tank and the like, drawings showing the components other than the internal desorption unit are omitted, and the similar parts are designated by the same reference numerals for brevity.

[302] Referring to FIGS. 39 to 41, the advanced treatment system 300 for processing sewage and wastewater comprises a water tank body 310, a treatment filtering material 340, a drive shaft 351, support plates 370 and desorption connectors 381.

[303] The water tank body 310 is hermetically closed, and includes influent inlets 312 through which sewage and wastewater is introduced and an effluent outlet 313. [304] In a preferred embodiment of the present invention, the water tank body 310 is divided into two compartments by a partition wall 311 disposed at the center along the length of the water tank body 310, in which one of the two compartments serves as an aerobic tank A and the other compartment serves as an anaerobic- anoxic tank B.

[305] The aerobic tank A is intended to supply sewage, wastewater and air to a treatment filtering material 340 contained therein, and the anaerobic-anoxic tank B is intended to supply only sewage and wastewater.

[306] The aerobic tank A and the anaerobic-anoxic tank B are provided at bottoms thereof with first and second distribution tubes 320 and 330, respectively, and the first and second distribution tubes 320 and 330 include a plurality of through-holes formed in upper regions thereof to allow sewage and wastewater supplied from the outside to be introduced into the water tank body 310.

[307] The treatment filtering material 340 is charged in the water tank body 310, and functions to treat sewage and wastewater passing therethrough using microorganisms adhering to a surface of the treatment filtering material 340.

[308] The drive shaft 351 penetrates through the center of the water tank body 310, and is rotated by a drive unit 352.

[309] The support plates 370 are positioned at two or more locations on the drive shaft 351. In this embodiment, although the support plates 370 are shown as being positioned at the outermost ends in the water tank body, the support plates 370 may be also provided at the center of the water tank body, depending on a length of the drive shaft 351.

[310] The desorption connectors 381, which are horizontally connected between the support plates 370, pass through the treatment filtering material 340 while detaching sludge from the treatment filtering material, thus serving as sludge desorption members.

[311] The desorption connectors 381 may have a circular section, or may have noncircular sections in addition to the circular section but having a diameter not greater than that of the circular section, so that a contact area between the noncircular connectors and the treatment filtering material is smaller than that between the circular connectors and the treatment filtering material, thus reducing resistance against the treatment filtering material.

[312] The water tank body 310 is disposed in the external tank 390 which is filled with sewage and wastewater such that the sewage and wastewater charged in the external tank 390 is easily introduced into the water tank body 310 with the aid of hydraulic pressure of the sewage and wastewater, thus enabling easy introduction of sewage and wastewater into the water tank body 310 by relatively low power.

[313] In the advanced treatment system for processing sewage and wastewater, according to the present invention, sewage and wastewater is continuously charged into the external tank 390, and is then introduced into the anaerobic-anoxic tank B of the water tank body 310 disposed in the external tank 390 through the influent inlet provided at the anaerobic-anoxic tank B.

[314] The sewage and wastewater, which is introduced into the anaerobic-anoxic tank B, passes through the treatment filtering material 340 charged in the anaerobic-anoxic tank B, and thus organic substances and organic nitrogen are removed from the sewage and wastewater by virtue of the treatment filtering material 340.

[315] The sewage and wastewater, which has passed through the anaerobic-anoxic tank B, is introduced into the aerobic tank A through the aerobic tank introduction line 361, and then the sewage and wastewater passes through the treatment filtering material 340 charged in the aerobic tank A and having microorganisms adhering thereto, thus enabling nitrification of organic substances and ammonia. Furthermore, the microorganisms in the aerobic tank A are supplied with air through the air line 364.

[316] When sludge and the like adhere to the treatment filtering material 340 as a result of the continuous flow of sewage and wastewater through the water tank body 310 over the long term, the drive unit 352 is operated to detach the sludge from the treatment filtering material 340.

[317] At this time, the sludge desorption members 353 and the support plates 370 are rotated and at the same time the connectors 380 connected between the sludge desorption members 353 and the support plates 370 are also rotated. In this regard, the sludge desorption members 353 and the connectors 380 are configured to minimize resistance against the treatment filtering material 340.

[318] The desorption connectors 381 according to this embodiment of the present invention are also configured to minimize resistance against the treatment filtering material 340.

[319] Subsequently, the sewage and wastewater, which is treated as a result of the passage through the aerobic tank A, is discharged to the treatment tank C through the effluent outlet 313. Industrial Applicability

[320] As described above, the present invention is configured such that sewage and wastewater passes through a tank filled with filtering material to treat the sewage and wastewater by microorganisms adhering to the filtering material, and a desorption unit is operated to detach sludge from the filtering material when the filtering material becomes clogged with the sludge. Accordingly, the present invention is very useful for the continuous treatment of sewage and wastewater.

[321]

Claims

[1] A filtrating module comprising: a module body which is hermetically closed, the module body including a flange formed on at least one side thereof and including through-holes formed in both sides thereof, respectively, to allow treated water to flow therethrough; a filtering material disposed at a lower position in the module body; and a carrier disposed on the filtering material and carrying microorganisms thereon and defining an upper pond thereon; wherein a distance between the through-holes formed in the both sides of the module body is greater than a height between the through-holes and a level of the filtering material, so that treated water, introduced through one through-hole formed in one side of the module body, flows upwards, and thus sludge contained in the treated water is filtered by the filtering material and contaminated material filtered and captured in the carrier is highly concentrated and flows into the upper pond, and wherein the sewage and wastewater in the upper pond flows downwards and passes through the carrier and the filtering material, after which the sewage and wastewater is discharged through the other through-hole formed in the other side of the module body.

[2] The filtration module according to claim 1, wherein the through-holes formed in the module body are alternately disposed at opposite sides with reference to the center axis.

[3] The filtration module according to claim 1, wherein the module body is provided at the center with a rotating shaft to which a turning force of a motor is transmitted to rotate the rotating shaft, and a desorption member is fixed to the rotating shaft, wherein when the filtering material and the carrier are clogged, the desorption member is rotated to detach sludge from the filtering material and the carrier.

[4] The filtration module according to claim 3, wherein the rotating shaft has a polygonal section, first and second fittings are joined to opposite ends of the rotating shaft to join the rotating shaft to the module body, and a plurality of spacers and a plurality of desorption members are alternately fitted on the rotat ing shaft.

[5] The filtration module according to claim 4, wherein the plurality of desorption members are radially arranged and fitted on the polygonal surface of the rotating shaft.

[6] The filtration module according to claim 1, wherein the upper pond contains a floating carrier.

[7] The filtration module according to claim 1, wherein the carrier is lighter than the filtering material, and has a particle size greater than that of the filtering material.

[8] The filtration module according to claim 1, wherein the module body includes a partition wall therein to allow sewage and wastewater introduced through the through-hole to easily flow upwards.

[9] The filtration module according to claim 1, wherein a plurality of rotating shafts is provided in the module body for transmission of power of the motor, and desorption members are joined to the plurality of rotating shafts, and wherein when a flow path in the filtering material and the carrier becomes clogged with sludge, the plurality of desorption members are rotated to detach the sludge from the filtering material and the carrier.

[10] An advanced high concentration treatment system comprising: a plurality of filtration modules coupled to each other, in which each of the plurality of filtration modules comprises a module body which is hermetically closed, the module body including a flange formed on at least one side thereof and including through-holes formed in both sides thereof, respectively, to allow treated water to flow therethrough; a filtering material disposed in the module body; and a carrier disposed on the filtering material in the module body, the plurality of filtrating modules being coupled to each other by joining the flanges to each other, wherein a distance between the through-holes formed in both sides of the module body is greater than a height between the through-holes and a level of the filtering material, so that treated water, introduced through one through-hole formed in one side of the module body, flows upwards, and thus sludge contained in the treated water is filtered by the filtering material and contaminated material filtered and captured in the carrier becomes highly concentrated and flows into the upper pond, wherein the sewage and wastewater in the upper pond flows downwards and passes through the carrier and the filtering material, after which the sewage and wastewater is discharged into a subsequent filtration module through the other through-hole formed in the other side of the module body, and wherein the sewage and wastewater sequentially passes through the plurality of filtration modules, with the result that contaminated material in the sewage and wastewater is repeatedly filtered and thus a concentration thereof is reduced.

[11] The advanced high concentration treatment system according to claim 10, wherein the through-holes formed in the module body are alternately disposed at opposite sides with reference to the center axis.

[12] The advanced high concentration treatment system according to claim 10, wherein the module body is provided at the center with a rotating shaft to which a turning force of a motor is transmitted to rotate the rotating shaft, and a desorption member is fixed to the rotating shaft, and wherein when the filtering material and the carrier are clogged, the desorption member is rotated to detach sludge from the filtering material and the carrier.

[13] The advanced high concentration treatment system according to claim 12, wherein the rotating shaft has a polygonal section, first and second fittings are joined to the opposite ends of the rotating shaft to join the rotating shaft to the module body, and a plurality of spacers and a plurality of desorption members are alternately fitted on the rotating shaft.

[14] The advanced high concentration treatment system according to claim 13, wherein the plurality of desorption members are radially arranged and fitted on the polygonal surface of the rotating shaft.

[15] The advanced high concentration treatment system according to claim 10, wherein the upper pond contains a floating carrier.

[16] The advanced high concentration treatment system according to claim 10, wherein the carrier is lighter than the filtering material and has a particle size greater than that of the filtering material.

[17] The advanced high concentration treatment system according to claim 10, wherein the module body includes a partition wall therein to allow sewage and wastewater introduced through the through-hole to easily flow upwards.

[18] The advanced high concentration treatment system according to claim 10, wherein a plurality of rotating shafts is provided in the module body for transmission of power of the motor, and desorption members are joined to the plurality of rotating shafts, and wherein when a flow path in the filtering material and the carrier is clogged with sludge, the plurality of desorption members are rotated to detach the sludge from the filtering material and the carrier.

[19] The advanced high concentration treatment system according to claim 10, wherein raw water is divided, and the respective divisions of the raw water are supplied to the plurality of filtration modules coupled to each other, so as to promote growth of microorganisms.

[20] An advanced high concentration treatment method using a hermetical filtration module, comprising: introducing raw water into the hermetical filtration module through a through- hole formed in a side of the filtration module; causing the raw water introduced through the through-hole to flow upwards, thus primarily filtering sludge in the raw water by filtration in the filtration module; bringing the treated water, which was filtered by the filtration module, into contact with a carrier carrying microorganisms in the filtration module; causing the treated water, which was brought into contact with the carrier, to flow upwards into an upper pond in the filtration module and then to flow downwards; causing the treated water flowing downwards to pass through the carrier, thus allowing contact with the microorganisms; and causing the treated water, which was brought into contact with the microorganism, to flow downwards, thus secondarily filtering the treated water by the use of the filtering material, and then discharging the treated water through a through-hole formed in the other side of the filtration module.

[21] The advanced high concentration treatment method using a filtration module, according to claim 20, further comprising, when a flow path of the filtering material and the carrier is clogged with sludge, rotating a desorption member joined to a rotating shaft in the filtration module to detach the sludge from the filtering material and the carrier.

[22] An advanced treatment system for processing sewage and wastewater, comprising: a water tank body which is hermetically closed, the water tank body including a partition wall at the center along a longitudinal length thereof to divide the water tank body into an aerobic tank and an anaerobic-anoxic tank; first and second distribution tubes disposed at lower positions in the aerobic tank and the anaerobic-anoxic tank, respectively, and each including a plurality of through-holes formed in an upper region thereof to allow sewage and wastewater introduced from the outside to be introduced into the water tank body; a treatment filtering material charged in the water tank body and carrying microorganisms thereon, in which sewage and wastewater introduced through the first and second distribution tubes is treated by the microorganisms while passing through the treatment filtering material; and a desorption unit for detaching sludge from the treatment filtering material charged in the water tank body so as to prevent the treatment from becoming clogged with the sludge.

[23] The advanced treatment system for processing sewage and wastewater, according to claim 22, wherein the desorption unit comprises: a drive shaft penetrating through the center of the water tank body; a drive unit for rotating the rotating shaft; and a sludge desorption member joined to an outer surface of the drive shaft, and passing through the treatment filtering material to detach sludge from the treatment filtering material.

[24] The advanced treatment system for processing sewage and wastewater, according to claim 23, wherein the sludge desorption member comprises a plurality of first rods arranged in at least one radial direction at regular intervals and joined to the drive shaft, and a second rod connected to ends of the plurality of first rods.

[25] The advanced treatment system for processing sewage and wastewater, according to claim 24, wherein each of the plurality of first rods includes a subsidiary sludge desorption member fitted thereon, in which the subsidiary sludge desorption member has a rotating rib thereon and is rotated forwards and reversely while passing through the treatment filtering material.

[26] The advanced treatment system for processing sewage and wastewater, according to claim 25, wherein a length of the subsidiary sludge desorption member is shorter than that of the first rod, so that the subsidiary sludge desorption member slides due to its own weight during rotation of the sludge desorption member.

[27] The advanced treatment system for processing sewage and wastewater, according to claim 25 or 26, wherein the subsidiary sludge desorption member is divided into a plurality of sections.

[28] The advanced treatment system for processing sewage and wastewater, according to claim 23, wherein the drive unit comprises a drive motor disposed at the outside of the water tank body, a drive sprocket joined to an end of a shaft of the drive motor, a driven sprocket joined to an outer surface of the drive shaft to transmit power of the drive motor, and a chain for connecting the drive sprocket with the driven sprocket.

[29] The advanced treatment system for processing sewage and wastewater, according to claim 22, further comprising: a sewage and wastewater supply line connected to the second distribution tube disposed in the anaerobic-anoxic tank to supply sewage and wastewater; an aerobic introduction line, which is connected at one end to the anaerobic- anoxic tank and at the other end to the aerobic tank, to transfer sewage and wastewater passing from the anaerobic-anoxic tank to the aerobic tank; a settlement tank release line, which is connected at one end to the aerobic tank and at the other end to a settlement tank, to release sewage and wastewater which has passed through the aerobic tank into the settlement tank; a returning line for returning a part of sewage and wastewater passed through the aerobic tank to the anaerobic-anoxic tank; and an air line for supplying air to the aerobic tank.

[30] The advanced treatment system for processing sewage and wastewater, according to claim 29, further comprising a subsidiary supply line diverging off from the sewage and wastewater supply line and connected at an end to the first distribution tube, to allow easy adhesion of microorganisms to the treatment filtering material in the aerobic tank when initially operated, wherein the subsidiary supply line is provided with a control valve which is closed to block the subsidiary supply line after adhesion of microorganisms to the treatment filtering material.

[31] An advanced treatment method of processing sewage and wastewater, comprising: supplying sewage and wastewater to an anaerobic-anoxic tank provided in a side of a water tank body through a sewage and wastewater supply line; eliminating organic substances and organic nitrogen from the sewage and wastewater, which is supplied into the anaerobic-anoxic tank through the sewage and wastewater supply line, using a treatment filtering material; introducing the sewage and wastewater which has passed through the anaerobic- anoxic tank into an aerobic tank; nitrifying ammonia in the sewage and wastewater, introduced in the aerobic tank, by passing the sewage and wastewater through a treatment filtering material carrying microorganisms; discharging a part of the sewage and wastewater which has passed through the aerobic tank and returning another part of the sewage and wastewater to the anaerobic-anoxic tank, thus conducting denitrification; and operating a desorption unit at regular intervals to prevent the treatment filtering material in the aerobic tank and the anaerobic-anoxic tank from becoming clogged.

[32] The advanced treatment method of processing sewage and wastewater, according to claim 31, wherein a part of the sewage and wastewater supplied through the sewage and wastewater supply line is introduced into the aerobic tank through a subsidiary supply line, thus allowing easy adhesion of microorganisms to the treatment filtering material in the aerobic tank when first put into peration.

[33] The advanced treatment system for processing sewage and wastewater, according to claim 23, wherein the sludge desorption member comprises: support assemblies joined to both ends of the drive shaft, each of the support assemblies including a boss joined to the drive shaft, support rods radially joined at inner ends to the boss, a ring connected to outer ends of the support rods, and coupling rings fixed to an outer surface of the ring; movable shafts fixedly connected to the coupling rings positioned on both sides of the drive shaft; and a plurality of desorption pieces, each of which is connected at one end to the drive shaft and at the other end to the movable shaft.

[34] The advanced treatment system for processing sewage and wastewater, according to claim 33, wherein each of the desorption pieces comprises a drive shaft ring fitted on the drive shaft, a movable shaft ring fitted on the movable shaft, and a connecting rod connecting the drive shaft ring with the movable shaft ring.

[35] The advanced treatment system for processing sewage and wastewater, according to claim 33, wherein the connecting rod includes a subsidiary sludge desorption member fitted thereon and having a rotating rib, in which the subsidiary sludge desorption member is rotated forward and reversely while passing through the treatment filtering material.

[36] The advanced treatment system for processing sewage and wastewater, according to claim 35, wherein a length of the subsidiary sludge desorption member is shorter than that of the connecting rod, so that the subsidiary sludge desorption member slides due to its own weight during rotation of the drive shaft.

[37] The advanced treatment system for processing sewage and wastewater, according to claim 35 or 36, wherein the subsidiary sludge desorption member is divided into a plurality of sections.

[38] The advanced treatment system for processing sewage and wastewater, according to claim 22, wherein each of the first and second distribution tubes comprises: an inner tube having a plurality of first through-holes formed in a wall thereof and a influent inlet provided at one end thereof; and an outer tube concentrically disposed outside the inner tube and having a plurality of second through-holes formed in a wall thereof, in which a space defined between the inner tube and the outer tube is filled with sand, a grain of which has a diameter greater than a diameter of the first and second through- holes.

[39] The advanced treatment system for processing sewage and wastewater, according to claim 38, wherein the first through-holes of the inner tube are positioned below a horizontal center line of the inner tube while the second through-holes of the outer tube are positioned over the horizontal center line.

[40] The advanced treatment system for processing sewage and wastewater, according to claim 22, wherein the first and second distribution tubes, each of which is configured to have a box shape, are externally provided beneath bottoms of the aerobic tank and the anaerobic-anoxic tank, respectively, and communicate with internal spaces of the tanks, respectively, in which each of the first and second distribution tubes is provided at one end with an influent inlet through which sewage and wastewater flows into the distribution tube, and is filled with granules on which a filter mesh is disposed to allow sewage and wastewater supplied through the influent inlet to be introduced into the tank.

[41] The advanced treatment system for processing sewage and wastewater, according to claim 40, wherein each of the first and second distribution tubes is divided into two compartments by a partition wall, in which one of the two compartments serves as a reserving space in which sewage and wastewater introduced through the influent inlet is held and the other of the two compartments includes two or more branch pipes therein to distribute the sewage and wastewater introduced through the reserving space.

[42] An advanced treatment system for processing sewage and wastewater, comprising: a water tank body which is hermetically closed; a treatment filtering material charged in the water tank body and carrying microorganisms thereon, through which sewage and wastewater introduced in the water tank body pass, to allow treatment of the sewage and wastewater by the microorganisms ; a desorption unit including a drive shaft penetrating the center of the water tank body, a drive unit for rotating the drive shaft, and a sludge desorption member fixed at one end to an outer surface of the drive shaft and extended at the other end, the sludge desorption member passing through the treatment filtering material to detach sludge adhering to the treatment filtering material; support plates joined to the drive shaft and positioned outside the desorption member; and at least one connector disposed along circumferences of the support plates to connect the support plates with the sludge desorption member.

[43] An advanced treatment system for processing sewage and wastewater, comprising: a water tank body which is hermetically closed; a treatment filtering material charged in the water tank body and carrying microorganisms thereon, through which sewage and wastewater introduced in the water tank body passes, for treating the sewage and wastewater by the microorganisms; a drive shaft penetrating through the center of the water tank body; two or more support plates joined to the drive shaft; and a plurality of desorption connectors horizontally connected between the two or more support plates and passing through the treatment filtering material to detach sludge from the treatment filtering material. [44] The advanced treatment system for processing sewage and wastewater, according to claim 42 or 43, wherein the connector and the desorption connectors have circular cross sections. [45] The advanced treatment system for processing sewage and wastewater, according to claim 42 or 43, wherein the connector and the desorption connectors have noncircular cross sections, in which a diameter of the noncircular cross section is not greater than that of a circular cross section. [46] The advanced treatment system for processing sewage and wastewater, according to claim 42 or 43, further comprising an external tank in which the water tank body is disposed and which is filled with sewage and wastewater.