JP2005138079A - Sewage cleaning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide sewage treatment wherein a carrier can be used over the long term. <P>SOLUTION: A sewage cleaning system has a cleaning tank 3, and a carrier 8B stored in the cleaning tank 3 and carrying microorganisms. The system cleans sewage by passing the sewage through the carrier 8B and with the decomposition ability of the microorganisms. The system is provided with a vibration device 37 such as an ultrasonic generator for applying vibration to the carrier 8B. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a sewage purification apparatus, and more particularly to a sewage purification apparatus that purifies sewage with the resolution of microorganisms.

In a sewage purification apparatus that purifies sewage with the resolution of microorganisms, microorganisms are supported on activated carbon and other carriers in the septic tank, and organics contained in sewage when sewage passes through the carriers. The components are first adsorbed and adhered to the carrier, and the components are then decomposed by the resolution of the microorganisms so that the sewage is purified. Thus, the organic component in the sewage first adheres to the carrier, so that the carrier is clogged. In addition, the microorganisms themselves grow and cause clogging of the carrier. In this way, as the specification clogging progresses, the purification capacity must be lowered. Patent Document 1 discloses a technique for exchanging the entire support with a new one before such a failure is caused.

JP 2002-307084 A

  In the above-described sewage purification apparatus, the entire support is replaced with a new one before clogging of the support is caused, so that high purification ability can be constantly maintained, but the replacement work itself of the support When the size of the body is increased, it cannot be easily performed. Therefore, it is required to make the exchange period of the carrier as long as possible, that is, to make the carrier usable for a long time.

  Therefore, an object of the present invention is to provide a sewage treatment in which such a carrier can be used for a long time.

  In order to solve the above-mentioned problem, the technical means taken in claim 1 is: “A septic tank and a carrier that is accommodated in the septic tank and carries microorganisms, and the sewage passes through the carrier so that the In the sewage purification apparatus configured to purify sewage with the resolution of the microorganism, a sewage purification apparatus provided with a vibration device that applies vibration to the carrier is configured.

  As the “vibration device” in the technical means of claim 1, for example, as clearly indicated in claims 2 and 3, “ultrasonic generator” and “stirring device and other mechanical vibration devices” Can be adopted.

  Thus, the “vibration device” in the technical means according to the first to third aspects is defined, for example, as defined between the bottom surface of the septic tank and the bottom surface of the carrier. It is disposed in the “space”.

  Further, the “vibration device” in the technical means according to the first to fourth aspects of the present invention is, for example, as described in claim 5, “prevents clogging of the carrier by passing fresh water through the carrier. It operates at the same time as or close to the water flow device.

  And the "supporting body" in the technical means of the said Claims 1-5 is "filled in the container removably loaded in a septic tank" so that Claim 6 may show clearly, for example.

  According to the first aspect of the present invention, “a septic tank and a carrier that is accommodated in the septic tank and carries microorganisms, and the sewage passes through the carrier to purify the sewage by the resolution of the microorganisms. In the sewage purification apparatus configured as described above, since the sewage purification apparatus is provided, which is provided with a vibration device that applies vibration to the carrier, when the vibration is applied to the carrier, the carrier Organic components of sewage adhering to the body are separated, and clogging of the carrier is prevented.

  According to the invention described in claim 2 and claim 3, since “ultrasonic generator” and “agitation device and other mechanical vibration devices” are adopted as the “vibration device”, respectively, A “vibrator” can be provided.

  Since the “vibration device” is disposed in the “space defined between the bottom surface of the septic tank and the bottom surface of the carrier”, the carrier having a high organic component adhesion density is provided. Since the bottom surface side of the substrate is vibrated more strongly, it is possible to effectively separate the organic component from the carrier.

  Since the invention according to claim 5 operates the "vibration device" at the "same time or close to the water flow device that prevents clogging of the carrier by passing fresh water through the carrier" By using the “water passage device” as an auxiliary, the effectiveness of the separation of the organic component from the carrier by the “vibration device” can be ensured.

  In the invention described in claim 6, since the “support body” is “filled in a container that is detachably loaded into the septic tank”, the organic component can be separated from the support body by the “vibrator”. Even after a period of time, if it is necessary to replace the “supporting body” due to the life of the carrier, the replacement can be easily performed.

  The best mode for carrying out the present invention will be described below with reference to FIGS.

  The water purification apparatus according to the present embodiment purifies water to be purified containing environmentally hazardous substances such as oil (mineral oil, fats and oils), and as shown in FIG. As the tank 2 and the first septic tank 3 as a container for holding the water to be purified disposed downstream of the oil / water separation tank 2, and the container for retaining the water to be purified disposed downstream of the first septic tank 3 Second septic tank 4. The oil / water separation tank 2, the first septic tank 3, and the second septic tank 4 are respectively disposed on the base 1. The base 1 has a lifting tool 1 a for hanging the base 1.

  As shown in FIG. 1, the oil / water separation tank 2 roughly purifies oil contained in water to be purified, and includes a separation chamber 20 in which water to be purified is held, and a separation chamber. Float type water level detection means 21 floating in the water to be purified in 20, the first inlet 22, the first outlet 23, and the water surface WA of the water to be purified held in the separation chamber 20 And a float funnel 29 floating on the surface. The water level detection means 21 detects the water level of the separation chamber 20 to be purified. The detection signal is input to the control circuit 25. The control circuit 25 controls the drive of the pump 27 that functions as a pumping means. Thereby, the water level WA of the water to be purified held in the separation chamber 20 is controlled so as to be integrated.

  As shown in FIG. 1, the water supply pipe 26 is connected to a water source 6 in which water to be purified is stored, and is connected to the first inlet 22 of the oil / water separation tank 2 via a pump 27 for pumping water. It is connected. The first outlet 23 of the oil / water separation tank 2 is connected to the oil content storage tank 5 via an oil drain pipe 28. The oil content storage tank 5 is disposed on the base 1 so as to be positioned below the oil / water separation tank 2.

  The float funnel 29 mounted on the oil / water separation tank 2 separates the floating oil 29a floating on the water surface WA of the water in the separation chamber 20 of the oil / water separation tank 2. The float funnel 29 has a funnel hole 29b capable of capturing floating oil 29a floating on the water surface WA, and a communication path 29c connected from the funnel hole 29b to the first outlet 23. The floating oil 29a floating on the water surface WA of the separation chamber 20 is captured by the funnel hole 29b, and further discharged through the communication passage 29c, the first outlet 23, and the oil drain pipe 28 toward the oil storage tank 5. The An opening / closing valve 50 is provided in the oil storage tank 5. When the on-off valve 50 is opened, the oil in the oil reservoir 5 is discharged to the outside of the oil reservoir 5.

  As shown in FIG. 1, the first purification tank 3 is mounted on the mounting surface 10 of the base 1, and includes a first purification chamber 30, an inlet 31 provided at the top of the first purification chamber 30, and a first purification chamber. 30 and an outlet 32 provided at the lower part of 30. The inlet 31 of the first septic tank 3 is connected to the second outlet 24 of the oil / water separation tank 2 via an intermediate pipe 34. Further, the intermediate pipe 34 is provided with an oil droplet removal filter 33 and a flow rate adjustment valve 35. The oil droplet removal filter 33 captures the oil content of the water flowing through the intermediate pipe 34. The flow rate adjustment valve 35 functions as a control valve that adjusts the flow rate of water flowing through the intermediate pipe 34 in accordance with the height of the water surface W1 of the first purification chamber 30 of the first purification tank 3. Therefore, the height of the water surface W1 of the first purification chamber 30 is kept constant. When the flow rate adjustment valve 35 is opened, the water in the oil / water separation tank 2 flows into the first septic tank 3 through the intermediate pipe 34. When the flow rate adjustment valve 35 is closed, the water in the oil / water separation tank 2 does not flow to the first septic tank 3 through the intermediate pipe 34.

  As shown in FIG. 1, a cage-shaped carrier holding portion 9 </ b> A is provided in the first purification chamber 30 in the first purification chamber 30 of the first purification tank 3. The carrier holding portion 9A is detachable from the first purification chamber 30, and holds the carrier 8A that carries the fungi 7A as useful microorganisms. As shown in FIG. 2, the carrier holding portion 9A includes a cage-shaped carrier accommodating portion 91 for accommodating the granular carrier 8A for supporting the mold 7A, and a cage-shaped carrier accommodating portion 91 for the first septic tank. A float 92 that functions as a buoyancy generating means for floating on the water surface W1 of water 3, and a ring-shaped flow path regulating member 93 that makes one round along the circumferential direction of the outer peripheral surface of the cage-shaped carrier accommodating portion 91. .

  As shown in FIG. 3, the peripheral wall of the carrier accommodating portion 91 of the carrier holding portion 9A has water permeability. That is, the peripheral wall of the carrier accommodating portion 91 has a large number of communication ports 94 for water communication that allow the inside and outside of the carrier accommodating portion 91 to communicate with each other. A mesh member 95 having a mesh mesh 95x having water permeability is provided on the lower surface and the upper surface of the carrier accommodating portion 91. As described above, since the carrier holding portion 9A has water permeability, the carrier 8A and the mold 7A held by the carrier holding portion 9A can touch water.

  According to the present embodiment, as shown in FIG. 2, the carrier holder 9 </ b> A floats on the water surface W <b> 1 of the water in the first purification chamber 30 due to the buoyancy of the float 92. Therefore, the mold 7A carried on the carrier 8A of the carrier holder 9A effectively contacts the water in the first purification chamber 30 and the air above the water surface W1 of the first purification chamber 30. Can be propagated efficiently. That is, the mold 7A carried on the carrier 8A can exist in the gas-liquid boundary region (air / water boundary region) which is the boundary between air and water on the water surface W1 in the first septic tank 3. Mold 7A propagates and the amount of degrading enzyme secreted from mold 7A is secured. Since this degrading enzyme flows out into the first septic tank 3 and further into the second septic tank 4 located downstream thereof, the environmentally hazardous substances contained in the water in the first septic tank 3 and the water in the second septic tank 4 The environmentally hazardous substances contained are effectively purified.

  The gas-liquid boundary region (air / water boundary region) described above corresponds to a region to which both air and water are supplied. Representative molds 7A include white rot fungi. White rot fungi tend to propagate in the gas-liquid boundary region. When white rot fungi are propagated, the amount of the degrading enzyme that is highly purified against environmentally hazardous substances increases. The carrier 8A described above may be any as long as it can support the mold 7A, but a porous body having a large number of pores is preferable.

According to the present embodiment example, as shown in FIG. 2, the flow path regulating member 93 that makes one round along the circumferential direction of the outer circumferential surface of the cage-shaped carrier housing portion 91 is provided. The flow path regulating member 93 has a ring shape, and is disposed in a gap 30 x between the outer peripheral surface of the carrier accommodating portion 91 and the inner wall surface of the first purification chamber 30 of the first purification tank 3. As a result, the flow path regulating member 93 has a function of regulating the passage of water through the flow path of the gap 30x. For this reason, the probability that the water which flows through the 1st purification chamber 30 of the 1st purification tank 3 routes the support body 8A in the support body accommodating part 91 can be raised, and purification efficiency can be improved. In FIG. 3, the float 92 and the flow path regulating member 93 are omitted.

  The flow path regulating member 93 is formed on the outer peripheral surface of the cage-shaped carrier accommodating portion 91, but is not limited thereto, and may be provided on the inner wall surface of the first purification chamber 30 of the first purification tank 3 in some cases. Anyway. Further, although the flow path regulating member 93 has a ring shape along the circumferential direction of the carrier accommodating portion 91, it may be provided intermittently along the circumferential direction of the carrier accommodating portion 91.

  As shown in FIG. 1, a cage-shaped second carrier holding portion 9 </ b> B is held in the first purification chamber 30 in the first purification chamber 30 of the first purification tank 3. The second carrier holding unit 9B holds a second carrier 8B that carries bacteria 7B as useful microorganisms. When the bacteria 7B are propagated, the secretion amount of a degrading enzyme having a high purification ability for environmentally hazardous substances increases.

  The bacteria 7B carried on the second carrier 8B can be propagated by the dissolved air contained in the water if they are present in the water even if they are not in direct contact with the air, or oxygen is required. It is a microorganism that can reproduce without any damage. Examples of bacteria 7B include soil fungi and activated sludge fungi. Bacteria 7B breeds substances contained in the water to be purified as nutrients.

  As shown in FIG. 5, a claw-like engaged portion 9m is formed as a holding portion in the second carrier holding portion 9B. A hook-shaped engaging portion 39B that detachably engages the claw-like engaged portion 9m of the second carrier holding portion 9B with the first purification tank 3 is provided in the first purification tank 3 as a holding section. With the cage-shaped second carrier holding part 9B engaged with the engaging part 39B of the first purification tank 3, the cage-shaped second carrier holding part 9B is immersed in the water in the first purification tank 3. Accordingly, the second carrier 8B held by the second carrier holder 9B is immersed in the water in the first septic tank 3.

  As shown in FIG. 5, a mesh member 96 having mesh mesh 96x having water permeability is provided on the lower surface and the upper surface of the second carrier holding portion 9B. Thus, since the 2nd support body holding part 9B has water permeability, the 2nd support body 8B and bacteria 7B currently hold | maintained at the 2nd support body holding part 9B can touch water. The second carrier 8B is not limited as long as it can carry bacteria 7B, but a porous body (for example, activated carbon) having a large number of pores is preferable.

  According to the present embodiment example, as can be understood from FIG. 1, the carrier 8 </ b> A carrying the mold 7 </ b> A that requires high contact with air is provided in the first purification chamber 30 of the first purification tank 3. The second carrier 8B carrying the bacteria 7B, which is disposed relatively on the inside and does not require much contact with the air and can propagate even with dissolved air, is the first carrier of the first septic tank 3. It is disposed relatively lower in the purification chamber 30. As described above, the molds 7A and the bacteria 7B are propagated in the first septic tank 3, so that in the first septic tank 3, the action of the molds 7A to purify the water and the action of the bacteria 7B to purify the water are combined. A purifying action can be expected.

  According to the present embodiment example, as shown in FIG. 1, in the first septic tank 3, the height position of the inlet 31 is provided above the outlet 32, so that the water to be purified is basically Flows downward (arrow D1 direction) from the upper part of the first septic tank 3 toward the lower side. In this case, when oil is present in the water in the first septic tank 3, the oil having a low specific gravity tends to float on the water surface W <b> 1 of the first septic tank 3. The molds 7A carried on the carrier 8A are disposed relatively on the upper side in the first purification chamber 30 and are present in the vicinity of the water surface W1 of the first purification tank 3. It is possible to contribute to efficiently purifying floating substances such as oil floating on the water surface W1 by the mold 7A near the water surface W1.

  As shown in FIG. 1, an ultrasonic generator 37 is provided at the bottom of the first purification chamber 30 of the first purification tank 3. Accordingly, the ultrasonic generator 37 is connected to the ultrasonic generator circuit 38, and the ultrasonic generator 37 is vibrated by driving the ultrasonic generator circuit 38. This vibration decomposes the organic component of the sewage adhering to the numerous inner holes of the second carrier 8B and separates it from the numerous inner holes of the second carrier 8B, thereby clogging the second carrier 8B. It comes to prevent.

  As shown in FIG. 1, the second septic tank 4 is mounted on the mounting surface 10 of the base 1 independently of the first septic tank 3. The second purification tank 4 has a second purification chamber 40, an inlet 41 provided at the lower portion of the second purification chamber 40, and an outlet 42 provided at the upper portion of the second purification chamber 40. The inlet 41 of the second septic tank 4 is connected to the outlet 32 of the first septic tank 3 via an intermediate pipe 43. As shown in FIG. 1, the intermediate pipe 43 is provided with a flow rate adjusting valve 44 as a control valve that can be opened and closed. When the flow rate adjustment valve 44 is opened, the water purified in the first septic tank 3 flows into the second septic tank 4 through the intermediate pipe 43. When the flow rate adjustment valve 44 is closed, the water in the first septic tank 3 does not flow to the second septic tank 4 through the intermediate pipe 43.

  As shown in FIG. 1, the outlet 42 of the second septic tank 4 is located above the inlet 41 of the second septic tank 4 and is connected to a water discharge pipe 46 having a water outlet 47. Therefore, according to the second purification chamber 40 of the second purification tank 4, the water is basically set to flow upward (in the direction of the arrow U1) from the lower part to the upper part of the carrier 8C. As a result, the drift of water flowing in the second purification chamber 40 of the second purification tank 4 is suppressed, which is advantageous in suppressing variation in the growth of molds and bacteria in the second purification chamber 40. Therefore, an ultrasonic generator 37A is provided below the carrier 8C, and the ultrasonic generator 37A is connected to the ultrasonic generator circuit 38. By driving the ultrasonic wave generation circuit 38, the ultrasonic wave generator 37A vibrates. This vibration decomposes the organic components of the sewage adhering to the numerous inner holes of the carrier 8C and separates them from the numerous inner holes of the carrier 8C, thereby preventing clogging of the carrier 8C. Yes.

  FIG. 6 shows the inside of the second septic tank 4. As shown in FIG. 6, a cage-shaped carrier holding portion 9 </ b> C is provided in the second purification chamber 40 of the second purification tank 4. The carrier holding unit 9C holds a granular carrier 8C that carries molds 7C as useful microorganisms. Further, as shown in FIG. 6, a claw-like locked portion 9m is formed as a holding portion in the carrier holding portion 9C. Further, as shown in FIG. 6, a hook-shaped engaging portion 39 </ b> C that is detachably engaged with the claw-like locked portion 9 m is provided as a holding portion on the inner wall of the second septic tank 4.

  As shown in FIG. 6, when the claw-like locked portion 9m of the cage-shaped carrier holding portion 9C is engaged with the engaging portion 39C of the second septic tank 4, the cage-shaped carrier holding portion 9C At least a part of the carrier 8 </ b> C held in the water is held near the water surface W <b> 2 of the water in the second septic tank 4. Therefore, at least a part of the carrier 8C held in the cage-shaped carrier holding part 9C is held above the height position h2 of the lower end of the outlet 42 of the second septic tank 4. Therefore, the mold 7C carried on the carrier 8C can be present in the gas-liquid boundary region, which is the boundary between air and water, in the vicinity of the water surface W2 of the water in the second septic tank 4. While contacting the water of the water surface W2, it can contact the air above the water surface W2. Therefore, the mold 7C in the second septic tank 4 is activated and propagated by the water and the air above the water surface W2. The decomposing enzyme secreted from the mold 7C flows out into the water in the second septic tank 4. For this reason, the environmental load substance contained in the water in the 2nd purification tank 4 can be removed, and the water which should be purified can be purified effectively. The gas-liquid boundary region described above corresponds to a region where air and water are supplied.

  The representative mold 7C is exemplified by white rot fungi, similar to the mold 7A. The carrier 8C for supporting the mold 7C is not particularly limited as long as it can support the mold 7C, but a porous body having a large number of pores is preferable.

  As shown in FIG. 6, the cage-shaped carrier holding portion 9C is provided with a flow path regulating member 93 that makes one round of the outer peripheral surface thereof along the circumferential direction. The flow path regulating member 93 has a ring shape and is disposed in the gap 40x between the outer peripheral surface of the carrier holding portion 9C and the inner wall surface of the second septic tank 4. As a result, the flow path regulating member 93 has a function of regulating the passage of water through the flow path of the gap 40x. For this reason, it is possible to increase the probability that the water flowing in the second purification tank 4 in the direction of the arrow U1 passes through the carrier 8C in the carrier holder 9C, which is advantageous for water purification.

  FIG. 4 shows the carrier holding portion 9C described above. As shown in FIG. 4, the peripheral wall of the carrier accommodating portion 91 of the carrier holding portion 9C has water permeability. That is, the peripheral wall of the carrier accommodating portion 91 of the carrier holding portion 9 </ b> C has a large number of communication ports 94 for passing water between the inside and outside of the carrier accommodating portion 91. A mesh member 95 having a mesh mesh 95x having water permeability is provided on the lower surface and the upper surface of the carrier holding portion 9C. Thus, since the carrier holding part 9C has water permeability, the carrier 8C and the mold 7C held by the carrier holding part 9C can touch water. In FIG. 4, the float 92, the flow path regulating member 93, and the like are omitted.

  Further, according to the present embodiment example, as shown in FIG. 6, a cage-shaped second carrier holding portion 9 </ b> D is provided in the lower portion in the second purification chamber 40 of the second purification tank 4. The second carrier holding unit 9D holds a second carrier 8D that carries bacteria 7D as useful microorganisms. As shown in FIG. 6, mesh members 97 having mesh eyes 97y having water permeability are provided on the lower surface and the upper surface of the second carrier holding portion 9D. As described above, since the second carrier holding part 9D has water permeability, the second carrier 8D and the bacteria 7D held by the second carrier holding part 9D can touch water.

  The cage-shaped second carrier holding portion 9D is configured to be engaged with and held by the inner wall of the second septic tank 4 by the same structure as the second carrier holding portion 9B described above. Examples of the bacteria 7D described above include soil bacteria and activated sludge bacteria. The second carrier 8D carrying the bacteria 7D may be any as long as it can carry the bacteria 7D, but a porous body having many pores is preferable. In this case, substances such as environmental load substances contained in the water to be purified are easily trapped in the pores of the porous body. Therefore, the fungi 7A and 7C and bacteria 7B and 7D are propagated using this substance as a nutrient. Is advantageous.

In addition, according to the 2nd septic tank 4 which concerns on this embodiment, mold | fungi 7C which requires that the contact property with air is high arrange | positions in the 2nd septic chamber 40 of the 2nd septic tank 4 relatively upper side. In addition, the bacteria 7 </ b> D that do not require much contact with air are disposed relatively lower in the second purification chamber 40 of the second purification tank 4.

  As shown in FIG. 1, the height position of the lower end of the outlet 42 of the second septic tank 4 is indicated as h2. Considering that the water held in the second septic tank 4 is discharged from the water outlet 47 of the water discharge pipe 46, the water surface W2 of the water held in the second septic tank 4 is basically at the height position h2. It can be said that it corresponds to. Therefore, when the height of the water surface W2 of the water held in the second septic tank 4 is higher than the height position h2 of the lower end of the outlet 42 of the second septic tank 4, the inside of the second septic chamber 40 of the second septic tank 4 Water is automatically discharged from the water outlet 47 of the water discharge pipe 46.

  Now, a case where the water purification apparatus according to the present embodiment is used will be described. When the pump 27 is driven, the water to be purified stored in the water source 6 is supplied to the oil / water separation tank 2 through the water feeder 26 and the first inlet 22, and the oil / water separation tank 2 allows oil components and water to be purified. Broadly divided into ingredients. The oil component is discharged to the oil storage tank 5. The water component in the oil / water separation tank 2 is supplied into the first septic tank 3 after the oil component is further removed by the oil droplet removal filter 33. The water to be purified supplied to the first purification tank 3 is purified by the purification action by the molds 7A carried on the carrier 8A and the purification action by the bacteria 7B carried on the second carrier 8B. The

  Further, the water purified in the first septic tank 3 is supplied into the second septic tank 4 through the flow rate adjusting valve 44. The water supplied into the second septic tank 4 is purified by the bacteria 7D carried on the second carrier 8D in the cage-like second carrier holder 9D disposed in the second septic tank 4, It is purified by the purifying action by molds 7C carried on the carrier 8C in the cage-like carrier holding part 9C. The water purified in the second septic tank 4 is discharged from the water outlet 47 of the water discharge pipe 46 as purified water.

  According to this embodiment, if the water surface of the oil / water separation tank 2 is WA, the water surface of the first purification tank 3 is W1, and the water surface of the second purification tank 4 is W2, the height of the water surface WA of the oil / water separation tank 2 is set. In order to make use of the water pressure, the relationship of WA height> W1 height> W2 height is set. Further, the height of the upper end W4 of the intermediate pipe 34 is set such that the height of WA> the height of W4. Therefore, if the water to be purified is held in the oil / water separation tank 2 by driving the pump 27, the height of the water surface WA of the oil / water separation tank 2 is increased, so that the water head pressure by the water surface WA of the oil / water separation tank 2 is used. Then, the water in the oil / water separation tank 2 is automatically discharged toward the first purification tank 3 and the second purification tank 4, and further automatically discharged from the water discharge port 47 of the water discharge pipe 46.

According to the present embodiment, the water to be purified is roughly separated into water and oil by the oil / water separation tank 2, and then the water that has separated the oil to some extent is mold 7 A in the first purification tank 3 and the second purification tank 4. 7C and bacteria 7B and 7D are further purified by the purification action, so that the purification efficiency can be increased. According to the present embodiment, when the water from which oil has been separated to some extent is purified by the first septic tank 3 and the second septic tank 4, the mold 7A is disposed on the upstream side, and therefore the decomposition secreted from the mold 7A. The enzyme can flow out to the downstream side, which is advantageous for enhancing the purification ability of the mold 7A by the degrading enzyme in the entire purification flow path.

  That is, the carrier holding portion 9A that holds the carrier 8A that supports the mold 7A is placed in a flow path through which water flows more than the second carrier holding portion 9B that holds the second carrier 8B that supports the bacteria 7B. Since it is provided on the relatively upstream side, the degrading enzyme secreted from the mold 7A can be supplied to the downstream side, and further, the second carrier 8B, 8D is provided on the downstream side of the mold 7A. It can also be expected to support the decomposing enzyme in the pores of the second supporting bodies 8B and 8D, which are porous bodies, thereby suppressing the decomposing enzyme from being discharged in a short time, which is advantageous for improving the purification efficiency. is there.

  According to the present embodiment, as shown in FIG. 1, a suction pipe 201 is connected to the lower part of the first septic tank 3 via a suction valve 200 and a backwashing pump 202, and the first septic tank 3. A discharge pipe 204 is connected to the upper part of this through a discharge valve 203. In normal times, the intake valve 200 and the discharge valve 203 are closed. When the first septic tank 3 is washed, when the backwash pump 202 is operated with the flow rate adjusting valves 44 and 35 closed and the suction valve 200 and the discharge valve 203 opened, the suction pipe 201 Wash water is supplied into the first septic tank 3. Wash water flows upward (in the direction of arrow D2) in the first septic tank 3. And the contaminant which exists in the 1st septic tank 3 is wash | cleaned with a wash water, and is discharged | emitted outside from the discharge pipe 204, and the 1st septic tank 3 inside is wash | cleaned by this. When the cleaning in the first septic tank 3 is thus completed, the intake valve 200 and the discharge valve 203 are closed and the flow rate adjusting valves 44 and 35 are opened.

  If the ultrasonic generator 38 is operated before or at the same time as the back-back washing pump 202 is activated, the organic components of the sewage separated from the numerous inner holes of the second carrier 8B by this vibration are washed water. And then discharged outward from the discharge pipe 204. As a result, the sewage organic component is thoroughly separated from the many inner holes of the second carrier 8B from the many inner holes of the second carrier 8B, and the clogging of the second carrier 8B is completely prevented. I can do it.

  The above-described water purification apparatus shown in FIG. 1 may be a fixed system that is fixedly installed on the installation surface, or may be a movable system that is mounted on the loading platform of a vehicle such as a truck. In the case of the movable system, a water purification device mounted on a vehicle such as a truck is transported to a water source, and sewage is pumped to the oil / water separation tank 2 at that location and purified by the oil / water separation tank 2, the first purification tank 3 and the second purification tank 4. be able to.

  According to the above-described embodiment, as shown in FIG. 2, the carrier holding portion 9 </ b> A that holds the mold 7 </ b> A disposed in the first septic tank 3 is placed on the water surface W <b> 1 of the water in the first septic tank 3. This is a system having a float 92 that floats. However, the present invention is not limited to this, and there is a hook-shaped engaging portion for detachably engaging the carrier holding portion 9A with the first purification tank 3 so that the carrier holding portion 9A is positioned in the vicinity of the water surface W1 of the first purification tank 3. The system provided in the 1st septic tank 3 as a holding | maintenance part may be sufficient.

  According to the above-described embodiment, as shown in FIG. 6, the second septic tank 4 holds the hook-shaped engaging portion 39C that engages and holds the carrier holding portion 9C that holds the mold 7C. However, the present invention is not limited to this, and the carrier holding unit 9C may be a system that floats by a float. The carrier holding unit 9C can float on the water surface W2 of the water in the second septic tank 4 by the float.

  According to the embodiment described above, both the first septic tank 3 and the second septic tank 4 are provided, but either one may be used depending on the degree of contamination of water to be purified. In addition, the method of the present invention and the device of the present invention are not limited to the above-described embodiments, and can be implemented with appropriate modifications without departing from the scope of the invention. The following technical idea can also be recognized from the above description.

  Instead of the ultrasonic generator 37 (37A) driven by the ultrasonic generator 38 in the above-described embodiment, a vibrator driven by a drive circuit may be employed.

It is sectional drawing which shows a water purification apparatus typically. It is sectional drawing which shows the inside of a 1st septic tank typically. It is a perspective view which shows typically the support body holding | maintenance part which hold | maintains the support body which carries | supports molds with which a 1st septic tank is equipped. It is a perspective view which shows typically the support body holding | maintenance part holding the support body which carries | supports molds with which a 2nd septic tank is equipped. It is sectional drawing which shows typically the state which hold | maintains the 2nd support body holding | maintenance part holding the 2nd support body which carries the bacteria equipped with a 1st septic tank in a 1st septic tank. It is sectional drawing which shows the inside of a 2nd septic tank typically.

Explanation of symbols

In the figure, 1 is a base, 2 is an oil / water separation tank, 3 is a first septic tank, 30 is a first septic tank, 4 is a second septic tank, 40 is a second septic tank, 7A and 7C are molds, and 8A and 8C are Carriers 8B and 8D are second carriers, 7B and 7D are bacteria, 9A and 9C are carrier holders, 9B and 9D are second carrier holders, 37 is an ultrasonic generator (vibration device), 39B shows an engaging part (holding part), and 9m shows an engaged part (holding part).

Claims (6)

In the sewage purification apparatus comprising a septic tank and a carrier that is accommodated in the septic tank and carries microorganisms, and the sewage passes through the carrier, the sewage is purified by the resolution of the microorganisms. A sewage purification apparatus provided with a vibration device for applying vibration to the body. The sewage purification apparatus according to claim 1, wherein the vibrating device is an ultrasonic generator. The sewage purification apparatus according to claim 1, wherein the vibrating device is the stirring device or other mechanical vibrating device. The sewage purification apparatus according to claim 1, wherein the vibration exciter is disposed in a space defined between a bottom surface of the septic tank and a bottom surface of the carrier. 5. The sewage purification apparatus according to claim 1, wherein the vibration exciter is operated at the same time as or close to a water flow device that prevents clogging of the carrier by passing fresh water through the carrier. The purification device according to claim 1, wherein the carrier is filled in a container that is removably loaded into the purification tank.

Images