TWI243153B - Waste water treatment apparatus - Google Patents

Abstract

A waste water treatment apparatus, wherein the failure of the aeration tube thereof can be detected, is provided. The waste water treatment apparatus has a waste water treatment tank for treating the waste water, a system or a plural system of aeration tubes for blowing air supplied from a blower into the waste water in the waste water treatment tank. The waste water treatment apparatus also has a system or a plural system of pressure sensors for sensing the abnormality of the pressure at the inlet sides of the system or plural system of aeration tubes.

Description

1243153 V. Description of the Invention (1) [Technical Field of the Invention] The present invention relates to a sewage treatment device, and more particularly, to a sewage treatment device having an aeration tube. [Conventional technology] Conventional sewage treatment equipment uses aeration pipes for various purposes. For example, the combined treatment purifiers described in Japanese Patent Application Laid-Open No. 10-1 9 2 8 6 9 use the first to fifth fins. The first vent pipe is used in a contact aeration tank to maintain the aerobic state of the aeration tank, to aerobicly decompose the treated water with aerobic microorganisms, and to use nitric acid bacteria or nitrous acid bacteria The role of ammonia nitrogen is decomposed into nitric or nitrous nitrogen. The second vent pipe is also used in the contact aeration tank to peel off the biofilm that adheres to the contact material and multiplies and slowly thickens. The third air pipe is a first return pipe arranged at the bottom of the contact aeration tank and the upper part of the first anaerobic filter bed tank, and constitutes an airlift pump. The fourth ventilation pipe is arranged in the return pipe connecting the sedimentation tank and the inflow pipe of the water separation device, and also constitutes an air lifting pump. The fifth vent pipe is arranged in a dissolution tank (electrolysis tank), and supplies air required to oxidize the divalent iron ions eluted from the electrode into trivalent iron ions. The vent pipe in the electrolytic cell has other functions described below. That is, since hydrogen is generated from the cathode of the electrode, the hydrogen concentration in the tank is reduced. Rinse the electrode surface. In addition, it has the functions of reacting trivalent iron ions with orthophosphoric acid in sewage, and the insoluble phosphoric acid compound that floats out, and can be discharged in the next step. [Problems to be Solved by the Invention] As described above, many conventional sewage treatment apparatuses have various types

313360.ptd Page 6 1243153 V. Description of the Invention (2) Ventilation device with important functions, but the precautions against failure have not been discussed. The present invention has been developed in view of the problems in the conventional technology. The purpose is to provide a sewage treatment device that can detect the failure of the ventilation pipe. [Means for solving the problem] In order to achieve the above object, the sewage treatment device of the present invention is provided with a sewage treatment tank for treating sewage, and the air in the sewage supplied from at least one blower to the sewage treatment tank is discharged into the sewage One of the system's snorkels. In addition, a pressure sensor is provided to detect the abnormal pressure on the inlet side of the snorkel. The sewage treatment device of the present invention is provided with a sewage treatment tank for treating sewage, and a sewage treatment device for a plurality of systems of ventilation pipes for spraying air supplied from at least one blower to the sewage in the sewage treatment tank into the sewage. . Each of the aforementioned ventilating systems may also be provided with a pressure sensor that detects an abnormality in the pressure on the inlet side of the venting tube. Here, the sewage treatment tank refers to all the tanks which are included in the above-mentioned sewage treatment device contacting an aeration tank or an electrolytic tank, and which are used for storing and processing sewage. The abnormal pressure at the inlet side of the snorkel refers to a high pressure exceeding the pressure range of normal operation, or a low pressure below the pressure range. As described above, it is also possible to detect that the amount of air supplied to the sewage is insufficient due to the failure of the blower or the obstruction of the air ejection holes of the air duct. Further, as described above, the planar shape of the sewage treatment tank has a substantially rectangular shape. The aeration pipe is based on one side of the sewage treatment tank and the blower.

313360.ptd Page 7 1243153 V. Description of the invention (3) The connection side is extended toward the other side opposite to this side. In addition, the connection side with the blower described above is installed in the sewage treatment tank so that it can be replaced with the opposite side. The pressure sensor may be installed near the connection side of the ventilation pipe to the blower. When formed in this manner, the sewage treatment tank can be made into a rectangular flat shape which is easy to handle. In addition, the mounting side of the air duct and the pressure sensor can be selected to be either of the two opposing sides. Therefore, when other tanks with drainage treatment devices are arranged along one side, or when there is a wall, the air duct is connected to the blower side and the pressure sensor is installed directly in front of the other tank, and installation work and maintenance can be performed. Homework is easier. In addition, it is preferable that the ventilation pipe of the one system or a plurality of systems can be installed in a direction opposite to that of the sewage treatment tank by being embedded in the ventilation pipe. With such a structure, it is possible to easily change the air blower connection side of the ventilation duct in the installation place to the opposite side. The aforementioned one or more pressure sensors are housed in a switch box, and the installation space of the switch box is provided near the connection side of the blower in the aeration pipe, and on the opposite side. In such a configuration, when the connection side of the blower to the air duct is changed in accordance with the aforementioned installation conditions, the mounting position of the pressure sensor can be easily changed to the front side at the same time. Thereby, the pressure sensor can be set near the inlet of the snorkel, so the length of the piping connecting the pressure sensor and the inlet of the snorkel can be shortened and accurate detection can be performed. Since the connection side of the snorkel and the pressure sensor are directly forward, the installation and maintenance work can be made easier. In addition, it may be provided to detect by one or more pressure sensors.

313360.ptd Page 8 1243153 V. Description of the invention (4) An abnormal countermeasure device that operates when the pressure on the inlet side of the outlet pipe is abnormal. The abnormality countermeasure device may be an alarm device. With this structure, the abnormality of the blower and the air duct can be immediately known, and the countermeasures can be quickly taken. The sewage treatment apparatus is configured as an electrolytic cell including at least a pair of electrodes capable of dissolving divalent metal ions in sewage. The abnormality countermeasure device may be configured as a control panel capable of stopping all power supplied to the electrodes. With such a structure, even if the air supplied from the vent pipe is reduced or stopped, hydrogen generated by the cathode of the electrode can be prevented, and the danger of an explosion caused by an increase in the hydrogen concentration can be avoided. Furthermore, it is possible to suppress the occurrence of a poorly soluble acid-filling compound, and prevent accidents such as short-circuits between electrodes caused by accumulation of the compounds between the electrodes. The sewage treatment device of the present invention includes: a plurality of electrodes capable of dissolving divalent metal ions in sewage; an electrolytic cell having a substantially quadrangular planar shape; a blower for supplying air to the ventilation pipe; and supplying power to the electrode unit Its power. The plurality of electrodes are arranged side by side so as to cross a pair of opposing sides of the electrolytic cell, and form two rows of electrode units. The ventilating tubes are arranged below the respective electrode units, and are arranged in the column direction to constitute different systems. A pressure sensor is provided in each vent pipe of each system to detect an abnormality in the pressure on the inlet side of the vent pipe. The two pressure sensors are housed in a switch box, and the space for installing the switch box is formed between the aforementioned electrode unit rows, that is, near the opposite sides of the aforementioned electrode unit rows. In this configuration, since the electrode units are not arranged in one row, they are arranged in two.

313360.ptd Page 9 1243153 V. Description of the invention (5) column, and reduce the width dimension of the groove, so that sewage can be prevented from clogging at the end in the width direction of the groove. Therefore, it is possible to prevent a reduction in phosphorus capture efficiency due to ions dissolving from the electrode unit at the end of the tank (even if the ions are eluted, since phosphorus does not react due to less phosphorus), the reduction in filling removal efficiency is prevented. In addition, the pressure sensor can be installed on either side of a pair of opposing sides in the electrolytic cell. Therefore, when the installation site faces the wall, or when it is installed near other equipment in the drainage facility, it can be considered during installation and maintenance The pressure sensor is installed on the front side. Since two pressure sensors are installed in one switch box, workability can be improved and the installation space can be reduced. In addition, the pressure sensor can effectively use the dead space formed between the electrode unit rows and be installed in this space, and it can also be installed near the inlet side of the air duct of the two systems, so it can accurately detect Out of pressure. In addition, when it is not installed between the electrode units, but is installed at a position that is biased toward one electrode unit, the distance between the vent pipe and the pressure sensor installed at the lower part of the other electrode unit becomes longer, and the pressure of one The pressure loss of the detector becomes large, and it is difficult to accurately detect the pressure. [Embodiment of the present invention] A concrete embodiment of the electrolytic tank for a sewage treatment apparatus of the present invention will be described below with reference to Figs. 1 to 7. Fig. 1 is a plan view of the appearance of an electrolytic cell according to an embodiment of the present invention. Fig. 2 is a plan view showing a state where the upper cover of the electrolytic cell according to the embodiment of the present invention is removed. Fig. 3 is a plan view showing a state in which the upper cover of the electrolytic cell and the electrode unit are removed according to the embodiment of the present invention. Fig. 4 is a sectional view taken along the line I V- I V in Fig. 1. The row of electrode units on the outlet side of the sewage in Figure 4 is shown as separated (s e p a r a t e), and the row of electrode units on the inlet side of the sewage flow is displayed.

313360.ptd Page 10 1243153 V. Description of the invention (6) Shows the state where the side of the electrode unit can be seen. Fig. 5 is a sectional view taken along the line V-V in Fig. 2. Fig. 6 is an enlarged view of a part VI in Fig. 5. Figure 7 is an enlarged view of the sludge discharge port. First, a schematic configuration of an electrolytic cell for a sewage treatment apparatus according to this embodiment will be described. The container of the electrolytic cell is a box-shaped container having a substantially rectangular shape in a planar shape, which is composed of a container body 1 having a predetermined depth, a middle cover 3 having a predetermined height, and a maintenance port for closing two electrode units provided in the middle cover 3 31 It consists of two upper covers 4 which reduce the size in the height direction. In this way, the lower portion of the upper cover 4 of the middle cover 3 has an electrode unit mounting opening portion 32 on the bottom surface, and the peripheral portion of the opening portion 32 is formed in the recess portion 33 having the function of a supporting member of the electrode unit 51. The lengthwise direction of the planar shape of the electrode plate 5 1 a of the electrode unit 51 from each of the recesses 33 (hereinafter referred to as the length direction of the electrode plate 5 1 a) is the same direction as the long side of the container body 1. The electrode unit 51 is inserted in a row in a direction perpendicular to the longitudinal direction of the electrode plate 51a at regular intervals to form an electrode unit row 5. Further, above the side wall forming the short side of the container body 1, a sewage outlet 11 is provided. A sewage inlet 35 is provided near the upper surface of the middle cover 3 near the side wall facing the side wall provided with the sewage outlet 11 and forming a short side, so that the sewage flows into the electrolytic tank below from above. Next, each part of the said electrolytic cell is demonstrated concretely. The container body 1 is a place where sewage flows, and metal ions are dissolved from the electrodes into the sewage, and the volume height required for the treatment is formed. In this way, on the upper part of the side wall forming the short side 1, such as the aforementioned sewage outflow port 11, a pipe leading out in a horizontal direction is provided as the aforementioned sewage flow

313360.ptd Page 11 1243153

Exit 11. At the sewage outflow port, the sewage φ 1 κ of the side wall is set with a packing material (pack 1 ng) 11 a. The central side of 1 is too slanted. 4. The bottom is located on the side of the container body 12 opposite to the side to form the inclined surface 12. On the inclined surface 1 3 with the inclined surface. The soil is also formed in a shape commensurate with the shape of the inclined surface 12 described above. These inclined surfaces are formed on the electrode unit portion to form outwards, and in a manner of fixing the function of the shed on the inlet side of the electric water, the shed portion 15 flows upward. The sewage at the inlet 35 is provided with the container H with the aforementioned inclined portion 16. The mountain-shaped central portion 'constitutes a mud discharge port 17. The materials 17 e, 17 f of the sludge discharge port 17 are set ^ 2, 1 3 ′ so as to cause convection of sewage in the tank, and 5 is near the lower part. On the top of the inclined face ι2, ι3 ° the sheds 1 and 4, which stand out from the dog, have a groove under the sheds 1, 4, and 15, which serve as a fixed surface. The sewage 3 1 5 ′ serves as a sewage dispersion surface flowing into the electrolytic cell: the area is larger than the shed portion 14 on the side of the sewage outflow side, and ^ ′ serves as a space for receiving sewage from the middle cover 3. The middle part of the electrode unit row 5 of the & 1 is formed in a smooth mountain-shaped part 4 of the same inclination angle of the f part 1 2, 1 3 and the space between the 6 and the inclined surface part 1 2, 1 3, the electrode Center of cell column 5. A sludge discharge port 17 is provided in this part and closed with a rubber plug 7a. On this outer surface side, a piping joint 17b (see FIG. 7) is interposed with a bolt 17C and a nut 7d through a gasket. In addition, ribs 19 for fixing the air duct are provided at two places (eight in total) of each electrode unit row 5 so as to hold the sludge discharge port 17. The rib portion 19 fixes the ventilation tube 25 in a state of slightly floating from the bottom surface. A notch 19a (see Fig. 7) for inserting the air duct is provided at the upper end portion of the rib portion 19. again

1243153 V. Description of the invention (8) '--- The four places on the bottom surface of 1 also form support feet 22. The electrolytic cell is also placed using the supporting leg 22. The upper edge portion of the main body 1 is turned down to form a flange portion 23 and a downward rib ^ 24 is formed to strengthen the strength of the edge portion. The middle cover 3 is shown in Figure 4, above the electrode unit and used to ensure the electrode unit 5 丨 above the torpedo and torpedo house ^, and there is a need for wiring space: i'C end box 6 and power supply , Perimeter, which constitutes the top of the electrolytic cell. The abutting edge Γ has a flange portion 23 curved piece 34a which is in contact with the upper end edge of the container body 1 described above. The front end of the flange portion 34 constitutes a folded-back fold 3, which is formed at the upper end of the container body 1. In this way, the middle lid is fixed to the flange portions 23, 3 [^ ^ Ϊ s ΐ s'o & quot o'l1 IV, ^ ^ ^ ^, λ ^ A sewage inlet 35 is provided on the thousand-face portion 30. There is a straight pipe 35b for installation I = the piping 35a with a flange at the bottom of the sewage second 1 and can be opposite The I is made up of a 90-degree elbow 35c that is set to rotate. Relative to μ and 35c, a connection pipe 35d for supplying sewage from the previous process is set to touch again! Compared with the 亏 / deficient water inlet 35 part, it is formed. The middle lid 3 and the aforementioned container body Is have a flat shape that becomes thinner toward the front. From the 'dead water inlet 35' to the portion of the wall side opposite to the sewage inlet 35, to the long side of the electrolytic tank The vertical direction is the long side, forming a concave portion 33 having a f-plane shape that is substantially rectangular. The depth is more square than the peripheral edge 4 of the middle cover 3 and is located slightly above the sewage surface in the trough body 1 ^

1243153

An electrode unit insert is provided. Moreover, openings 32 for each bottom surface having this depth are provided. The electrode unit 51 is an electrode having a rectangular iron plate electrode as a set of two pieces. The two electrode plates 5 1 a are maintained at a predetermined interval by an upper holder 51 b. A terminal 51c for connecting a power cable is provided on the support portion 51b. The terminal 5ic is connected to the electrode plate 51a in the support portion 51b. The electrode unit 51 is arranged such that the length direction of the electrode plate 5u is the length direction of the electrolytic cell, and a plurality of electrode units 5 are arranged in a direction perpendicular to the length direction of the electrode plate 51a. The support portion 51b has a wider width than the width (lengthwise dimension) of the electrode plate 51a. Two protruding portions of the electrode plate 5 1 a are provided with latch holes 5 1 e which are respectively engaged with pins 36 arranged around the electrode unit insertion opening portion 32 of the middle cover 3. The lower part of the pin hole 5 1 e is a large-diameter part that allows the pin 36 to be easily inserted, and the upper part is a small-diameter part to obtain a fixed position with good accuracy. In addition, a handle 5 1 d is provided on the upper surface of the support portion 51 b (see FIGS. 4 to 6). A separator 52 is provided between the electrode units 51. The separator 52 is made of plastic with an insulating material. The size of the flat plate part 5 2a is about the same as that of the electrode plate 5 1 a. The upper part is used as the support part 5 2 b having the same width as the support part of the electrode, and one electrode with a middle cover 3 is provided on each side thereof. Bolts 37 around the openings for unit insertion, or holes 52 c that engage with bolts 38 attached to the middle cover 3. A handle 52d is provided on the upper surface of the support portion 52b. The bolt 37 and the bolt 38 are arranged alternately. Also, below the center divider 52 above the sludge discharge port 17

313360.ptd Page 14 1243153 5. In the description of the invention (10), a lock 55 is connected to close the sludge discharge port 1 7 a. 1 丨 The rubber plug is inserted into the separator 52 and the electrode unit 51 $ and fastened to the plug 37 or the bolt 38 at the same time; block: first = the separator 52 5 1 is fastened to the plug 3 6 and inserted at the same time. At this time, the second unit ′ causes the electrode unit portion 51b to be supported by the support unit 52 of the separator 52 ^ ′ Secondly, the fixed cup ^ ^ is formed with a substantially L-shaped cross section (see FIG. 6). At the same time, the placement 窨 A is fastened to the bolt 38 ', and then it is placed on the support portion 51b of the electrode 51. ^ The cushioning material and insulating material of the fixing plate 53. 53a is the final fixation of the women's clothing on the peg 38. With this, the dirt nut 39 is bolted to the side of the screw outlet 11 and thunder; ς! Minming + L port 3 5 side and the sewage flow ^ The length of the electrode plate 51 a is an electrolytic cell | produced with the length of the electrode plate 513 In a direction perpendicular to the direction, the cell 5! And the separator 52 form 乂-: 1 5 ° " " ^ element = middle side ΛΛ, forming two rows of electrode cell columns. The electrode sheet is formed by Yoshiyoshi through the center of the aforementioned sludge discharge port 17. And the electrode list: row 5, plate 3, middle 'electrode unit row 5 and sewage inlet 35, the inclined face of the body 1; V; V spring out two ^: located in the aforementioned container book 51 2 1 3 In the upper part, a box ^ for connecting the electrode unit 51 to a power source is arranged at the electrode unit 4 of the portion. Each relay terminal box 6 has a substantially rectangular shape, and is in the length direction :: Γ: Secondary: Sub61. Following the terminal box 6, the length direction is electrically B 1 .., i Λ Λ 2- ^ ° Μ ^ and the direction of the electrode 5 is consistent. 2nd and 6th

U43153 V. Description of the invention (11) ^^ In the figure, 62 is a relatively private source lightning source τ at a relay terminal fi 1 # Μ 6. In addition, in Figs. 2 and 3, 6 is a power cable for one electrode unit 51. T63 is connected to the power supply and the relay terminal box at each electrode, which is divided into two parts-the system's diffusing step 5: square •, which is equipped with two front ends of the air duct by connecting the total U photo Figures 3 and 4). These two vent pipes 25 are connected to form an element 28 of the electrolytic cell. The two ventilation pipes 25 are erected along one of the walls, the side walls of the side soil, that is, the opposite pair of opposite sides (refer to the connection pipe 2 to connect the external fan 8 0, 2 7 Figure 4 and 51M6), and from the gap 37 (see Figure 1) in the upper end of the middle cover 3 to the outside, the fan 80, and the / The riser pipe 26 on the central side is connected to the delivery unit. 47 The blind riser 29 is installed at the front end of the riser pipe 27 on the central side. The side riser pipe 26 can supply air to the two ventilation pipes 25. In addition, the blades 'corresponding to the above-mentioned air diffusing devices provided in the two electrode unit rows 5 are as shown in FIG. 3', and are connected to the blowers 80 through connection pipes 81, respectively.

Furthermore, the 'notch 37' is provided symmetrically with respect to the upper end portion opposite to the upper end portion shown in Figs. 4 and 5. In addition, as described above, the vent tube 25 is inserted into the notch 19a provided in the rib portion 19 of the main body 1 and installed. Therefore, when the ventilation pipe 25 is installed in a different direction, the connection pipe 8 1 ′ connected to the blower 80 can also be installed on the facing surface side as shown in the figure. S is provided in the middle portion 3 'on the bottom surface with a portion 33 of the electrode unit insertion opening portion 32, as shown in Figs. 1, 4, and 5, and the upper cover 4 is covered. This is used to protect people from electric shocks such as the terminals 51c of the electrode unit 51. They are usually closed during use, and turned on when the electrode unit 51 is exchanged. In addition, the upper cover 4 is fixed to the middle cover 3 by screws 41, but for its opening and closing capacity,

1243153 V. Description of the invention (12) Easy, two handles 42 are formed on the upper cover 4. Next, a planar portion 70 having a concave shape is formed at two places' between the corner portions adjacent to the two concave portions 33. Further, between any one of the plane portions 70 and the upper cover 4, a cover switch 71 for accommodating the opening and closing of the upper cover 4 is provided, and it operates by detecting an abnormality in the pressure on the inlet side of the ventilation tube 25.的 压力 ensors 7 5 的 的 ensorUnit 7. Next, the sensing unit 7 will be described with reference to FIG. 8. Fig. 8 is an enlarged view of the sensing unit 7. As shown in Fig. 8, the cover switch 71 is composed of a switch body 72 installed inside the switch box 7 9 and a magnet 73 installed inside the upper cover 4. It is designed that when the upper cover 4 is closed, the reed switch in the switch body 72 is activated by the action of the magnet 73, and when the upper cover 4 is opened, the magnet 73 does not act on the switch body 72, thereby , So that the further switch in the switch body 72 is in the 0ff state. In addition, two lid switches 71 are provided at the corners corresponding to the two upper covers 4, and the opening and closing of the two upper covers 4 are respectively detected. On the other hand, the pressure sensor 75 detects abnormal pressure when the nozzle of the air outlet 25 is blocked, and the pressure of the blower 80 is abnormally increased. When air is not supplied to the sewage, Or when the air blower 80 uses a diaphragm (diaphragm) method, and the separator constituting the air blower 80 is broken, that is, when the pressure on the discharge side of the air blower 80 is abnormally low and air cannot be supplied to the sewage. The pressure sensor 75 is connected to the ventilation pipe 25 and the connection pipe 81 by the pressure guide pipes 76 and 77 as shown in FIGS. 3 and 5. Next, the control circuit of the electrode unit will be described with reference to Fig. 9. Chu Mi 9 only shows

1243153 7. Description of the invention (13) " " One " Actually, the other electrode unit row 5 is also connected. It is not shown for simplicity. As shown in FIG. 9, eight electrode units 5 1 ′ arranged in one row of electrode unit rows 5 are connected to a power source 9 through two relay terminal boxes 6 and via a control panel 8. Furthermore, ON signals of two cover switches 71 and two pressure sensors 75 are input to the control panel 8. When the upper lid 4 is detected by either of the lid switches 71 and opened, or when it is detected that the air cannot be normally supplied from the ventilation pipe 25 by the operation of any one of the pressure sensors 75, the power circuit of the electrode unit 51 is made Shut down. In other words, in this embodiment, the abnormality countermeasure device that operates when the pressure sensor 75 detects an abnormality in the pressure on the inlet side of the vent tube 25 is equivalent to the control panel 8 that stops the power supplied to the electrode unit 5 丨. 7 and 8 are electric wires for control circuits. The electrolytic cell configured as described above can be configured as the following system. When used as a wastewater treatment facility, as shown in Fig. 10, the sewage is introduced into the electrolytic tank through the activated sludge tank A and the intermediate flow adjustment tank B. A condensation sedimentation tank D is provided at the rear side of the electrolytic tank ^. On the other hand, in the case of a combined treatment purification tank for a household, for example, Japanese Patent Laid-Open No. 10-1 92 869 ^, Japanese Patent Laid-Open No. 10-2 582 83, and Japanese Patent Laid-Open No. 20001 can be used. 8 The system configuration described in JP 9977. The following describes the operation when this electrolytic cell is used when it is used as a business wastewater treatment system. Sewage discharged from the business site 'First, the BOD component is decomposed by microorganisms in the activated sludge tank A, and the sewage in the activated sludge tank A is introduced into the electrolytic tank C as a certain amount of sewage through the intermediate flow adjustment tank B. At this time, the sewage falls from the upper part of the electrolytic tank C toward the shed part 15 of the container body 1 to be dispersed, and is substantially uniform.

313360.ptd Page 18 1243153

The ground flows between the electrode units 51 and flows to the sewage outlet 丨 丨. In this embodiment, 'the electrode unit row 5 is set to two rows in a direction substantially perpendicular to the direction of the sewage flow, and the size of the width direction of the tank is reduced, so that the sewage at the end in the width direction of the tank can be prevented from being blocked . Therefore, it is possible to prevent a decrease in phosphorus capture efficiency and a decrease in phosphorus removal efficiency due to ions eluted from the electrode single tg51 at the end of the tank.

On this day, by the electrolysis of the electrode unit 51, divalent iron ions are eluted from the anode of the electrode unit 51, and hydrogen is generated from the cathode. On the other hand, the divalent iron ion is oxidized to the trivalent iron ion by the aeration from the vent pipe 25. Moreover, by using the air sprayed from the vent pipe 25, the hydrogen concentration is reduced, and the danger of explosion is avoided. The trivalent iron ion reacts with orthophosphoric acid in the sewage to produce a difficult filling compound. The sludge containing this compound is actively floated in the electrolytic cell c by aeration from the vent pipe 25, and then the sludge is discharged from the sewage outflow port 11 to the condensed sedimentation tank D in the next step. Then, in the agglutination and sedimentation tank D, the suspended matter of the phosphorus-containing compound is sanitized and removed. At this time, air is sprayed from the vent pipe 25 to the bottom surface of the container body 1, and foam-like bubbles rise upward, and are provided on the inclined surface portions 1 and 1 3 of the side wall of the sewage inflow side and the sewage outflow side of the container body 1. The sloped shape of the mountain-shaped portion 16 in the center of the bottom surface of the container body 1 that constitutes the middle of the electrode unit row 5 is formed near the lower part of the electrode unit row 5, so sewage will flow from the periphery of the vent pipe 25 to the container body It is introduced at the bottom of 1 and the sewage will produce effective convection in the electrolytic cell C, so that the floating matter will be discharged smoothly. The length direction of the electrode plate 51a is the same as the length direction of the groove. also

313360.ptd surface Page 19 1243153 V. Description of the invention (15) That is, when sewage flows along the plate-like surface of the electrode plate 5 1 a, the convection generated in the aforementioned groove also follows the electrode plate 5 丨 & The plate-like surface flows, thereby accelerating the flow of the convection and efficiently floating the phosphorus compound. In addition, by cleaning the surface of the counter electrode plate 5 丨 a generated by the convection and aeration, it is possible to prevent the sludge from being trapped between the electrode plate 5 of the electrode unit 51 and accidents such as short circuit of the electrode. As described above, since the sludge in the electrolytic cell C itself does not accumulate, it is generally not necessary to particularly scoop out the sludge in the electrolytic cell C, and it is only necessary to discharge the same simultaneously when the electrode unit 51 is exchanged. Since iron ions are eluted from the anode, the electrode plate 5 1 a is dissolved and consumed, and the electrode unit 51 must be exchanged. The anode and the cathode of this embodiment are made of iron, and in order to avoid consuming only a single electrode, the polarity is periodically switched. In addition, since the separator 5 2 is arranged between the adjacent electrode units 5 1 a, the consumption of each electrode plate 5 1 a is substantially uniform. Without the separator 52, the electrode plate 51a in the middle position performs electrolytic action on both sides, and will dissolve at the outermost electrode plate 51 & twice as fast, so the consumption of the electrode plate 5a cannot be uniformized. . In the above-mentioned electrolytic cell C, the time consumed by the electrode plate 51a is calculated in advance, and the electrode unit 51 is exchanged periodically. At this time, the upper cover 4 is first opened, and then the power winding 62 of the relay terminal 61 connected to the relay terminal box 6 is removed. Then, the fixing plate 5 3 having a substantially L-shaped cross section for fixing the electrode unit 51 and the separator 52 is removed. At this time, the relay terminal box 6 and the electrode unit 51 are connected in a substantially adjacent manner, so that the wiring of the power cable 62 can be kept in order, and the assembling and disassembling work of the electrode unit 51 can be easily performed. In addition, when the upper electrode 4 of the electrode unit η is opened, the magnet 73 embedded in the upper cover 4 cannot act on the switch body 72.

313360.ptd

Page 20, 1243153 V. Description of the invention (16) The switch section will not cause the operator to perform 5 2 disassembly because the connection is made, and, further, because the mouth pressure is abnormal 8 0 Failure, or the empty space that is passed to the sewage, an abnormality occurs in the electrode unit, and the force sensor 75 will operate to keep the supply electrode running, because the hydrogen generated from the cathode is due to the purification of the sewage in the tank. , So the danger of short circuit and so on. The control panel of the countermeasure can avoid this kind of danger. In addition, in this embodiment, the size is reduced to prevent the power supply circuit of the electrode unit row 5 of the electrode row from the groove end portion from being turned off, so that an electric shock may be caused by mistake. When the pole unit 51 is exchanged, if the lower part of the central divider and the knife divider 52 is locked with the rubber plug i7a by the lock 55, the rubber plug i7a can be easily pulled out. This T-shape configuration is provided to detect the entry of the ventilation tube 25 and the force sensor 75, so that it can be used for situations where the supply amount is insufficient due to the blockage of the air outlet hole of the blower, 25, etc. , Completely detected. In other words, in your work, the snorkel 25 is connected for the aforementioned reasons. When the aeration in the solution tank C cannot be performed normally, the control panel 8 as an abnormality countermeasure device will move = the power of line 5 is cut off. At this time, if the electrode is still able to continue to operate normally, it will cause the counter to rise again, and there is a danger of explosion. Moreover, the relationship between the two exposed to the breast, and the electrode surface could not be carried out yet? The electrode plate 51 & occurred between 8 and 8 can be cut off in the application form as an abnormal pair. "Very early 70-row 5 power circuit, so the shape of the electrolytic cell ♦ 2 rows of electrode units' column sk off the electrolytic cell-the opposite to the wide sound in the tank is too & so it can make the cell width direction early element dissolve Ion plugs into water. Therefore, the capture efficiency is reduced by 4

313360.ptd 1243153 V. Description of the invention (17) (Even if the ions are eluted, they do not react because there is less phosphorus), which can prevent the reduction of phosphorus removal efficiency. Furthermore, in the lower part of each electrode unit row 5, ventilation pipes 25 are arranged in the row direction to constitute other systems, respectively. In addition, each of the ventilation pipes 25 of each system is provided with a pressure sensor 75 that detects an abnormality in the pressure on the inlet side of the ventilation pipe 25. Therefore, any abnormality of the system of any of the ventilation pipes 25 can be detected, or Insufficient air supply to sewage, etc. In addition, the two pressure sensors 75 are housed in a switch box 79, and the space (plane part 70) in which the switch box 79 is installed is between the electrode unit rows 5. Since the electrode unit row 5 is formed in the foregoing Near the opposite side of the cross section, when the installation site faces the wall or near the other equipment of the drainage facility, consider the workability during installation and maintenance, and install the pressure sensor 75 on the front side. In addition, the switch box 79 can effectively utilize the useless space formed between the electrode unit rows 5 and install it in this space. In addition, since the pressure sensor 75 is installed near the two inlet sides of the two vent pipes 25, the pressure introduction pipe 7 7 is shortened, and the pressure detection is more accurate. In addition, the ventilation pipe 25 is a method for inserting a notch 19a formed in the rib portion 19 of the container body 1 and can be installed in a direction opposite to the piping. Therefore, the blower with the ventilation pipe 25 can be easily installed. The connecting side is changed to the opposite side. In addition, since a control panel 8 capable of stopping the supply of power to the electrode unit 51 as an abnormality countermeasure device is provided when an abnormality in the pressure on the inlet side of the vent pipe 2 is detected, even the air supplied from the vent pipe 2 5 By reducing or stopping, it is also possible to immediately stop generating hydrogen at the cathode of the electrode unit 51 and to generate divalent iron ions at the anode. Therefore, it is possible to avoid the increase in the hydrogen concentration.

313360.ptd Page 22 1243153 V. The danger of an outbreak of invention (18). In addition, by stopping the production of a poorly soluble phosphoric acid compound and accumulating the compound between the electrode plates 5 1 a, accidents such as a short circuit between the electrode plates 5 1 a can be prevented. The present invention can be embodied as follows. First, although the present embodiment is described using the electrolytic tank C as a sewage treatment tank as an example, other tanks such as a contact aeration tank may be used. The electrode unit row 5 of the electrolytic cell is described in two rows, but it is not particularly limited to two rows, and may be one row of the electrode unit row 5, or a small-scale one using one electrode. The ventilation tube 25 is not limited to the 2 system as in this embodiment, and may be a system. For example, in the present embodiment, although two ventilation ducts 25 are arranged below each electrode unit row 5, the ventilation ducts 25 may be connected to a common blower 80 to form a system. Of the snorkel. Although the abnormality countermeasure device in this embodiment is a control panel 8 for blocking the power supply to the electrode unit 51 when the pressure sensor 75 is operating, it may be an alarm device such as an alarm buzzer. . In particular, when the present invention is implemented in a cell other than the electrolytic cell C, there is a case where there is no electrode or the like that must be stopped immediately, and it is better to inform the processor of the occurrence of the accident first, which is most effective in this case. [Effects of the Present Invention] Since the present invention is configured as described above, the following effects can be achieved. According to the inventions of claims 1 to 9 of the scope of patent application of the present invention, since the pressure sensor for detecting the abnormal pressure on the inlet side of the ventilation pipe is provided, all the air can be detected when the amount of air supplied in the sewage is insufficient. Out

313360.ptd Page 23 1243153 V. Description of the invention (19) Use the device at ease. In addition, according to the inventions of claims 1 to 9, since the connection of the ventilation pipe and the blower and the installation of the pressure sensor can be installed on the front side, the work during the installation and maintenance of the sewage treatment device can be improved. Sex. In addition, according to the invention in claim 4 of the scope of patent application, since the vent pipe is installed in a recessed manner, the vent pipe can be easily attached to the connection of the blower and changed to the front side. In addition, according to the invention in claim 5 of the scope of patent application, the switch box housing the pressure sensor can be easily installed on the front side. Therefore, the distance between the pressure sensor and the inlet side of the snorkel can be shortened, and the accuracy of pressure detection can be improved. In addition, according to the invention in claim 6 of the scope of patent application, there is an abnormality countermeasure device that acts when the pressure sensor operates. In addition, according to the invention in claim 7 of the scope of the patent application, an alarm device is provided as the abnormality countermeasure device, so that the malfunction of the air duct can be immediately known. In addition, according to the invention in the eighth aspect of the patent application, the abnormality countermeasure device is used to stop the supply of power to the electrodes. Therefore, when the air supplied from the vent pipe is reduced or stopped, the danger of hydrogen concentration rise and explosion can be prevented. According to the invention in the ninth scope of the patent application, since the electrode units are arranged in two rows, it is possible to prevent the sewage from blocking at the end in the width direction of the groove, and to prevent the reduction in phosphorus removal efficiency caused by the reduction in the phosphorus capture rate. . In addition, the 2-system pressure sensor is housed in a switch box and can be installed on either side of a pair of opposing sides of the electrolytic cell, thereby improving workability.

313360.ptd Page 24 1243153 V. Description of the invention (20) and reduce the space required for its setting. Not only does it improve workability, it can be installed near the inlet side of the two air ducts on the front side, so the pressure can be accurately detected. 1 ^ 1 313360.ptd Page 25 1243153 Brief Description of Drawings [Simplified Description of Drawings] Figure 1 is a top view of the appearance of an electrolytic cell according to an embodiment of the present invention. Fig. 2 is a plan view showing a state where the upper cover of the electrolytic cell according to the embodiment of the present invention is removed. Fig. 3 is a plan view showing a state in which the upper cover and the electrode unit of the electrolytic cell according to the embodiment of the present invention are removed. Fig. 4 is a cross-sectional view taken along the line I-V in Fig. 1. The row of electrode units on the side of the sewage outflow is shown as separated (s e p a r a t e), and the row of electrode units on the side of the sewage outflow shows the state where the side of the electrode unit is visible. Fig. 5 is a sectional view taken along the line V-V in Fig. 2. Fig. 6 is an enlarged view of a part VI in Fig. 5. Fig. 7 is an enlarged view of a sewage outlet of an electrolytic cell according to an embodiment of the present invention. Fig. 8 is an enlarged view of a sensing unit of an electrolytic cell according to an embodiment of the present invention. Fig. 9 is a control circuit diagram of an electrode unit of an electrolytic cell according to an embodiment of the present invention. Fig. 10 is an example of a system when an electrolytic cell according to an embodiment of the present invention is used for treating waste water in a business field. 2, 9 Power supply 4 Top cover 6 Relay terminal box 8 Control panel [Description of component symbols 1 Container body 3 Middle cover 5 Electrode unit row 7 Sensing unit

313360.ptd Page 26 1243153

Brief description of the drawing 11 Sewage outlet 11a Packing 1 2, 1 3 Inclined face 14, 15 Shed 16 Mountain-shaped part 17 Sludge outlet 1 7a Rubber plug 17b Pipe joint 1 7 c, 3 8 Bolt 17d nut 1 7 e, 1 7 f gasket 19 &24; ribs 1 9a, 37 notch 22 support leg 23, 34 flange part 25 vent tube 26, 27, 35d, 81 connection pipe 29 blind plug 30 flat part 32 Electrode unit opening 33 Recessed part 3 4a Bend piece 34b Screw 3 5 Sewage inlet 3 5a Piping 35b Straight pipe 35c Elbow 36, 37 Pin 41 Screw 42, 51d Handle 51 Electrode unit 5 1 a Electrode plate 51b > 52b holder 51c terminal 5 1 e pin hole 52 separator (separato 5 2 a flat plate 52c sub L 53 fixing plate 55 lock 61 relay terminal 62 power cable 70 flat section 71 cover switch 72 switch body 73 Magnets 313360.ptd Page 27

Claims (1)

^ // 0 / ^ 1 1243153 \ Manmin Patent Specification Invention Name Chinese English Sewage Treatment Device WASTE WATER lULAlMLNl APPARATUS Name (Chinese) 1. Fuyong Samurai 2. Oda Kenji Second Inventor Name (English) T. TAKESHI FUKUNAGA 2. KENJI 0DA Nationality T. Japanese version 2 · Japanese version residence, residence 1. Θ version-542-3 542-3, Mizoguchi, Koji-cho, Kanzaki-cho, Shinki-gun, Sengku prefecture, Mizoguti, Kodera-cho, Kanzaki-gun, Hyogo-pref., Japan 2. 2-4 3-2-4, Naomidai, Himeji, Hyogo, Japan, Shiromidai, Himeji-city, Hyogo-pref., Japan Name 1. Name of Sanyo Electric Co., Ltd. (English) 1.SANYO ELECTRIC CO., LTD. Applicant's nationality 1. Japanese residence, domicile (office) 1. Keihan Hondori 2-5, 5-5, Keihan-Hondori, 2-chome, Moriguchi, Osaka Prefecture, Japan , Moriguchi-City, Osaka, Japan Name of Representative (Chinese) 1. Name of Representative of Kusano (English) 1. YUKIN0RI KUWANO 313360.ptd Page 1 of 1243153 Application date: I Case No .: Category: (The above columns are filled out by the Office) Chinese patent for invention patent, English name of the invention (Chinese) 3. Fukumoto Akira (Fukumoto Akira) 4. Omi Minki Inventor's Name (English) 3. AKIHIRO FUKUM0T0 4. T0SHIKI 0KUMI Nationality 3. Japanese 4. Japanese Residence and Residence 3. 78-1 5-78-1, Furusaka, Hojo, Hojo-machi, Kasai City, Hyogo Prefecture, Japan -cho, Kasai-city, Hyogo-pref., Japan 4. Funicho-cho, Himeji-city, Hyogo-pref ·, Japan, 5309-81, 5309-81, Funatsu-cho, Himeji, Japan ） Name (Name) (English) Nationality Applicant's Residence and Residence (Office) Name of Representative (Chinese) Name of Representative (English) 313360.ptd Page 2 1243153 This case has been filed with the country (region) for patent application date case number claim priority Japan JP 2001/02/27 JP 2001-052722 There are relevant microorganisms that have been deposited on the deposit date. No. IHH 313360.ptd Page 5