JP5183538B2 - Surplus sludge reduction device - Google Patents

Description

The present invention relates to a stationary and mobile surplus sludge reduction device capable of efficiently reducing excess sludge generated when industrial wastewater is treated in a wastewater treatment facility.

  In recent years, interest in the global environment has increased, and environmental issues need to be addressed by local communities and local governments in order to live a comfortable life and leave a beautiful natural environment for future generations. Under such circumstances, for example, in the food industry, methods for treating surplus sludge generated when wastewater generated by food production is treated in an activated sludge facility, energy saving and energy recovery in the wastewater treatment process are being promoted. . Among them, the treatment method of surplus sludge (industrial waste) is an important issue from the viewpoint of cost.

The wastewater treatment facility 2 of the prior art will be described with reference to FIGS. Sewage containing organic waste such as food contained in the wastewater is intermittently sent to the pretreatment tank 10 of the wastewater treatment facility 2 along with the wastewater via the drainage pipe. In the pretreatment tank 10, the liquid level gradually rises while removing impurities and the like. When the liquid level reaches the upper limit water level, the liquid in the pretreatment tank 10 is sent to the adjacent adjustment tank 10a by the intermittent operation pump (not shown) until the lower limit water level is reached. An aeration tank 11 is provided adjacent to the adjustment tank 10a, and the liquid in the aeration tank 11 is subjected to an aerobic biological treatment. The intermittent operation pump (not shown) works according to the amount of inflow of sewage containing organic waste, and the liquid in the adjustment tank 10a is sent to the aeration tank 11, and the liquid level in the aeration tank 11 is It raises to an upper limit water level, the liquid in the aeration tank 11 is aerated, and an aerobic biological process is performed. In the sedimentation tank 14a, the sludge is settled by gravity and a supernatant is formed. The supernatant liquid in the sedimentation tank 14a is sent to the discharge tank 16 via the sterilization treatment device 43, and then discharged to the drainage channel or the sewer 16a or the like. The high-concentration hydrous sludge accumulated in the lower layer of the settling tank 14a is intermittently and appropriately sent to the excess sludge concentration tank 15 by the settling tank pump 14b. When the excess sludge concentrated high concentration of sludge quantity accumulated in Chijimiso 15 becomes a predetermined amount, Hakobidashi with vacuum truck or the like, after volume reduction by dehydration and incineration, are disposed of in landfills.

  However, in recent years, it has been difficult to secure landfill disposal sites, so disposal costs have increased. This trend is expected to remain unchanged. In addition, carbon dioxide generated during incineration of excess sludge is a cause of global warming, so it is necessary to solve these problems.

The present invention was devised in view of these problems, and it is an object to provide an excess sludge reduction device that can more efficiently reduce excess sludge generated when industrial wastewater is treated at a wastewater treatment facility. And

This will be described with reference to FIGS. Excess sludge reduction device 1 according to claim 1 and 2, an excess sludge reduction device stationary to handle the excess sludge S that occur upon treatment of industrial wastewater with stationary wastewater treatment facility 2.

The stationary excess sludge reduction apparatus 1 includes an excess sludge S transferred from an excess sludge pressure pump 18 in an excess sludge concentration tank 15 of the waste water treatment facility 2 and an aeration tank of the waste water treatment facility 2. and excess sludge S that is transported by the waste sludge pumping pipe 61 from the aeration tank for pressure pump 12 in 11, is transported by the processing water pressure flue 60 from discharge tank for pressure pump 17 in the wastewater treatment facility second discharge tank 16 The treated water W is stored, and an ozone mixing tank 35 including an ozone mixing tank circulation pump 36 is provided inside.

Further, the mixed sewage of the excess sludge S and the treated water stored in the ozone mixing tank 35 is repeatedly circulated for a certain period of time through the water absorption pipe 42 and the mixing pipe 46 by the air-mixing pump 45, and an ozone generator is generated in the middle of the circulation. After the high-concentration ozone generated in 40 is injected, a circulation mechanism 44 that passes through the ultrafine bubble device 47 and generates the mixed wastewater into the purified treated water W is provided. The ozone generator 40 generates ozone from oxygen in the air.

Further, the treated water W of the ozone mixing tank 35, after being transferred to the treated water storage tank 30 through a flue 39 returned by treated water transfer pump 38, through said treated water returned flue 64 by the processing water pressure-feed pump 31 A treated water storage tank 30 for storing the wastewater treatment facility 2 until it is sent to the discharge tank 16 directly or through the overflow weir 14 of the settling tank 14a is provided.

  Furthermore, a waste ozone removing device 50 that treats and discharges waste ozone that has not been dissolved in the ozone mixing tank 35 to a specified concentration or less is provided.

This will be described with reference to FIGS. The excess sludge reduction device 1 according to claims 3 and 4 is a mobile vehicle-mounted excess sludge reduction device that continuously processes excess sludge S generated when industrial wastewater is treated in the stationary wastewater treatment facility 2. is there.

The mobile excess sludge reduction device 1 includes a surplus sludge S that is transported by the excess sludge pumping pipe 61 which arranged fouling Doro圧 feed pump 18 from disengaging connectable device d in the sludge concentration tank 15 of the wastewater treatment facility 2 The surplus sludge S transferred from the aeration tank pressure feed pump 12 in the aeration tank 11 of the wastewater treatment facility 2 by the surplus sludge pressure feed pipe 61 and the connectable / connectable connector d is temporarily stored, and an air diffuser is provided inside. The surplus sludge storage tank 20 provided with 24 is provided.

Further, a dilution water tank 27 for temporarily storing the treated water transferred by the treated water pressure feed pipe 60 provided with the connectable connector c from the discharge tank pressure feed pump 17 of the discharge tank 16 in the waste water treatment facility 2 is provided. Prepare.

Furthermore, pooled and excess sludge S a certain amount of which is transferred from the excess sludge storage tank 20 by the excess sludge transfer pump 21, and a certain amount of treated water that is transported by the dilution water transfer pump 28 from the dilution water tank 27, The ozone mixing tank 35 provided with the circulation pump 36 for ozone mixing tanks is provided inside.

Further, the weight reducing device 1 repeatedly circulates the mixed sewage of the sludge S and the treated water stored in the ozone mixing tank 35 through the water absorption pipe 42 and the mixing pipe 46 by the air-mixing pump 45 for a certain period of time. In addition, after the high-concentration ozone generated by the ozone generator 40 is injected, a circulation mechanism 44 that passes through the ultrafine bubble device 47 and generates the mixed wastewater into the purified treated water W is provided.

Further, the treated water W of the ozone mixing tank 35, after being transported through the transfer tube 39 by treated water transfer pump 38, return the treated water from the treatment pressure feed pump 31 was arranged disengaging possible fitting b flue A treated water storage tank 30 is provided that stores the water directly to the discharge tank 16 of the wastewater treatment facility 2 through 64 or until it is sent to the discharge tank 16 through the overflow weir 14 of the settling tank 14a .

  Furthermore, a waste ozone removing device 50 that treats and discharges waste ozone that has not been dissolved in the ozone mixing tank 35 to a specified concentration or less is provided.

The surplus sludge reduction apparatus 1 according to claim 5 is the invention according to any one of claims 1 to 4, wherein when foam is generated in the treated water storage tank 30, an antifoaming agent is added to the antifoaming tank 55. A defoaming device 57 for removing the bubbles is supplied through a defoaming agent transfer pipe 65 by a metering pump 56.

The stationary excess sludge reduction apparatus 1 according to claims 1 and 2 can efficiently reduce the excess sludge S generated when the industrial wastewater is treated in the wastewater treatment facility 2.

  That is, the excess sludge S and the treated water W are transferred from the wastewater treatment facility 2 to the ozone mixing tank 35 and mixed, and ozone is generated while circulating the mixed sewage through the water absorption pipe 42 and the mixing pipe 46 of the circulation mechanism 44. After injecting the high-concentration ozone generated by the machine 40, it passes through the ultrafine bubble device 47, so that it can be generated in the treated water W purified by the high-concentration ozone and the ultrafine bubbles.

  That is, the excess sludge S is diluted with a certain amount of treated water W and brought into contact with high-concentration ozone and ultrafine bubbles (nano bubbles) for a certain period of time, thereby strongly oxidizing the cells (microorganisms) constituting the excess sludge S. With force, the cell wall is destroyed and decomposed. Therefore, it is possible to reliably generate clean treated water W that can be discharged.

Since the ozone generator 40 generates high-concentration ozone from oxygen in the air, the processing cost can be reduced. Moreover, since the excess sludge S is treated with high-concentration ozone, no bad odor is generated. Moreover, the structure of the ozone generator 40 and the said excess sludge reduction apparatus 1 can be made simple.

Further, this treated water W is sent to the discharge tank 16 of the wastewater treatment facility 2 through the treated water storage tank 30 or directly to the discharge tank 16 through the overflow weir 14 of the settling tank 14a , and then through the discharge tank 16. It is discharged into sewers 16a.

Incidentally, the excess sludge processing apparatus 1 are the stationary installed in close proximity to the waste water treatment plant 2, Ru can be achieved reduction of excess sludge S at any time if necessary.

Also, the excess sludge reduction apparatus 1, because it utilizes the treated water W which is stored in the discharge tank 16 of the wastewater treatment plant 2, which is economical it is not necessary to use tap water or the like. In addition, the facility 1 does not pollute the environment because the exhaust ozone removal device 50 treats and releases exhaust ozone that has not been dissolved in the ozone mixing tank 35 to a specified concentration or less.

Similarly, the mobile vehicle-mounted surplus sludge treatment apparatus 1 according to claims 3 and 4 can efficiently reduce the surplus sludge S generated when the industrial wastewater is treated at the wastewater treatment facility 2. it can.

That is, surplus sludge S and treated water W from the waste water treatment facility 2 are transferred to the ozone mixing tank 35 via the surplus sludge storage tank 20 and the dilution water tank 27 and mixed, and the mixed sludge is supplied to the circulation mechanism 44. The high-concentration ozone generated by the ozone generator 40 is injected while circulating the water absorption pipe 42 and the mixing pipe 46, and then passed through the ultrafine bubble device 47. Therefore, the high-concentration ozone and the ultrafine bubbles are mixed together. Sewage can be produced into treated water W that has been effectively purified. Incidentally, after being sent to the discharge tank 16 the treated water W via a weir 14 wastewater treatment facility 2 directly or sedimentation tank 1 4a to discharge tank 16 through the treated water reservoir 30, into the sewer or the like 16a It is released.

In addition, since the treated water storage tank 30 and the ozone mixing tank 35 of the surplus sludge treatment apparatus 1 are mounted on a mobile vehicle such as a truck, a plurality of waste water treatment facilities 2, the surplus sludge concentration tank 15, and the discharge The place where the tank 16 is installed can be visited to reduce the amount of sludge in each facility 2.

The surplus sludge reduction apparatus 1 of Claim 5 exhibits the effect of the invention of any one of Claims 1-4. The apparatus 1 also supplies an antifoaming agent from the antifoaming tank 55 through the antifoaming agent transfer pipe 65 through the antifoaming agent transfer pipe 65 when bubbles are generated in the treated water storage tank 30, and eliminates the bubbles. Since the device 57 is provided, bubbles do not leak and pollute the surrounding environment.

It is a side view showing a stationary excessive sludge reduction device and a wastewater treatment facility according to the first embodiment of the present invention. It is a top view of FIG. It is a side view which shows the mobile surplus sludge reduction apparatus and waste water treatment facility which concern on 2nd embodiment of this invention. It is a top view of the excess sludge reduction | decrease apparatus part of FIG. It is a top view of the wastewater treatment facility part of FIG. 3 (only a wastewater treatment facility is shown).

1 and 2 show a first embodiment of a stationary surplus sludge reduction apparatus 1 according to the present invention. This apparatus 1 continuously treats excess sludge S generated when wastewater treatment facility 2 treats industrial wastewater generated when producing food, and is provided in the vicinity of wastewater treatment facility 2. It is a stationary type.

The wastewater treatment facility 2 will be described. Sewage containing organic waste such as food contained in the wastewater is intermittently sent to the pretreatment tank 10 of the wastewater treatment facility 2 along with the wastewater via the drainage pipe. In the pretreatment tank 10, the liquid gradually rises while removing impurities and the like. When the liquid level reaches the upper limit water level, the liquid in the pretreatment tank 10 is sent to the adjacent adjustment tank 10a by the intermittent operation pump (not shown) until the lower limit water level is reached. An aeration tank 11 is provided adjacent to the adjustment tank 10a, and the liquid in the aeration tank 11 is subjected to an aerobic biological treatment. The intermittent operation pump (not shown) works by the amount of inflow of sewage containing organic waste material intermittently to 14a and sends the liquid in the adjustment tank 10a to the aeration tank 11, and the liquid in the aeration tank 11 Aerated and aerobic biological treatment. In the settling tank 14a, the sludge is gravity settled to produce a supernatant. The supernatant liquid in the sludge tank 14a is sent to the discharge tank 16 through the sterilization apparatus 43, and then discharged to the drainage channel or the sewer 16a or the like. The high-concentration hydrous sludge accumulated in the lower layer of the settling tank 14a is intermittently and appropriately sent to the excess sludge concentration tank 15 by the settling tank pump 14b.

A processing tank 10 prior to introduction of the sludge, the aeration tank 11 for introducing the sewage leaving the pretreatment tank 10, a settling tank 1 4a for introducing the sewage leaving the aeration tank 11, the settling tank 1 4a supernatant was introduced, the discharge tank 16 to discharge into 且 one external, the equipment comprising settler 1 excess sludge concentration tank 15 4a and is introducing a supernatant of extracting the appropriate sludge from the outside, the wastewater treatment facility 2 It is configured. The surplus sludge reduction apparatus 1 of the present invention includes an ozone mixing tank 35, a circulation mechanism 44, a treated water storage tank 30, a waste ozone removal apparatus 50, and a defoaming apparatus 57. In the figure, the two pipes that simply intersect are not connected, and the black spots are connected.

Further, the pretreatment tank 10 for storing through drain hole 26a and sever possible fitting return pipe 66 coordinated with a open to the overflow pipe 26 and the bottom of each vessel is opened in the ceiling near each tank of the excess sludge reduction device 1 Prepare.

The ozone mixing tank 35 is used for the excess sludge S transferred from the excess sludge concentration tank 15 of the waste water treatment facility 2 through the excess sludge pressure feed pipe 61 by the excess sludge pressure feed pump 18 and the aeration tank 11 from the aeration tank 11 of the waste water treatment facility 2 . The excess sludge S transferred through the excess transfer pipe 61 by the pump 12 and the treated water W transferred from the discharge tank 16 of the wastewater treatment facility 2 through the treated water pressure feed pipe 60 by the discharge tank pressure feed pump 17 are stored. It is. Note that the excess sludge S is passed through a today miscellaneous products prevent network 48, thereby being prevented the transfer of today matters (foreign matters).

This treated water W is generated by the surplus sludge reduction device 1 and then transferred to the discharge tank 16. Since such treated water W is used, it is not necessary to use tap water or the like, and therefore the treatment cost can be reduced.

  An ozone mixing tank circulation pump 36 is provided inside the ozone mixing tank 35, and the surplus sludge S and the treated water W stored in the ozone mixing tank 35 are circulated by the circulation pump 36 to be effective. To mix. As a result, the excess sludge S is prevented from being separated from the treated water W and precipitated, thereby ensuring the reliability and speed of the excess sludge treatment.

  The circulation mechanism 44 circulates the mixed sewage of the excess sludge S and the treated water stored in the ozone mixing tank 35 repeatedly through the water absorption pipe 42 and the mixing pipe 46 by the air-mixing pump 45 for a predetermined time. And the high concentration ozone generated with the ozone generator 40 is inject | poured into the water absorption pipe 42 in the middle of the circulation, and mixed sewage is cleaned with this high concentration ozone.

Further, an ultrafine bubble device 47 is provided in the middle of the mixing pipe 46, and the mixed sewage is passed through the ultrafine bubble device 47 to supply ultrafine bubbles (oxygen), and the treated water W further purified from the mixed sewage is obtained. Generate. By supplying this high-concentration ozone and ultrafine bubbles, mixed sewage can be generated in clean treated water W.

  The treated water storage tank 30 is a wastewater treatment facility in which the treated water W generated in the ozone mixing tank 35 is transferred through the return pipe 39 by the treated water transfer pump 38 and then passed through the treated water transfer pipe 64 by the treated water pump 31. 2 until it is sent to the discharge tank 16 directly or through the overflow weir 14 of the settling tank 14a. In addition, the treated water transfer pump 38 is provided in the upper part of the ozone mixing tank 35, whereby only purified treated water (so-called supernatant water) W is transferred to the treated water storage tank 30.

  The treated water W sent to the discharge tank 16 directly to the discharge tank 16 or via the settling tank overflow weir 14 is sterilized by the sterilization treatment device 43 and then sent to the discharge tank 16. The treated water W sent to the discharge tank 16 is discharged to the outside, but a part thereof is sent to the ozone mixing tank 35 and used effectively as described above.

  The exhaust ozone removal device 50 accommodates the ozone decomposition catalyst material, receives exhaust ozone that has not been dissolved in the mixed sewage in the ozone mixing tank 35 through the exhaust ozone transfer pipe 51 by a pressure feed fan, and then processes it to a specified concentration or less. It discharges through the exhaust ozone discharge pipe 54. Thereby, discharge | emission of exhaust ozone can be prevented and environmental pollution can be prevented.

  Further, the defoaming device 57 supplies the defoaming agent from the defoaming tank 55 through the defoaming agent transfer pipe 65 and the defoaming spray 37 by the metering pump 56 when bubbles are generated in the treated water storage tank 30. Remove the bubbles. Thereby, the situation where a bubble leaks and the surroundings can be prevented.

In addition, since this surplus sludge processing apparatus 1 is a stationary type installed in the vicinity of the wastewater treatment facility 2, it can be operated whenever necessary to reduce the amount of surplus sludge S.

A second embodiment of the mobile vehicle-mounted surplus sludge reduction device 1 according to the present invention is shown in FIGS. This mobile vehicle-mounted surplus sludge reduction device 1 also continuously treats the surplus sludge S generated when the wastewater treatment facility 2 treats industrial wastewater generated by food production and the like. Note that A, B, C, and D in FIG. 4 are connected to A, B, C, and D in FIG. 5 via connectable connectors a, b, c, and d, respectively.

The treated water storage tank 30 and the ozone mixing tank 35 of the mobile vehicle-mounted surplus sludge reduction device 1 are mounted on a mobile vehicle such as a truck and moved to reduce the plurality of waste water treatment facilities 2 and the excess sludge S. It is to become. Therefore, since the surplus sludge S can be reduced by circulating around the plurality of wastewater treatment facilities 2, there is a great advantage that the treatment cost of the surplus sludge S can be significantly reduced.

The mobile surplus sludge reduction apparatus 1 includes an excess sludge storage tank 20, a dilution water tank 27, an ozone mixing tank 35, a circulation mechanism 44, a dilution water storage tank 30, a waste ozone removal apparatus 50, and a defoaming apparatus 57.

The surplus sludge storage tank 20 includes surplus sludge S transferred from the surplus sludge concentration tank 15 of the wastewater treatment facility 2 through the surplus sludge pressure feeding pump 18 through the surplus sludge pressure feeding pipe 61 provided with a disconnectable connector d, and the waste water treatment. The surplus sludge S to be transferred is temporarily stored through the surplus sludge pressure feed pipe 61 in which the disconnectable connector d is arranged by the aeration tank pressure feed pump 12 from the aeration tank 11 of the facility 2. An air diffuser 24 for supplying air (oxygen) to the excess sludge S by the blower 22 and the air pipe 23 is provided inside the excess sludge storage tank 20.

The diluted treated water tank 27 temporarily stores treated water transferred from the discharged water tank 16 of the wastewater treatment facility 2 through the treated water pressure feed pipe 60 provided with the disconnectable connector c by the discharged water tank pressure feed pump 17. Then, it is transferred to the ozone mixing tank 35 through the treated water feed pipe 62 by the treated water transfer pump 28.

The ozone mixing tank 35 is diluted by a certain amount of excess sludge S transferred from the excess sludge storage tank 20 by the excess sludge transfer pump 21 through the excess sludge transfer pipe 63 and by the dilution water transfer pump 28 from the dilution water tank 27. A certain amount of treated water transferred through the water pipe 62 is stored. An ozone mixing tank circulation pump 36 is provided inside the ozone mixing tank 35 (the function of the pump 36 is the same as that of the first embodiment).

The surplus sludge reduction device 1 is mobile, and the waste sludge treatment facility 2 is provided with the surplus sludge S and the treated water W transferred from the waste water treatment facility 2 by providing the surplus sludge storage tank 20 and the dilution water tank 27. The surplus sludge S can be reduced even at a location away from the vehicle.

  The circulation mechanism 44 has the same configuration as that of the first embodiment. That is, the mixed sewage of the excess sludge S and the treated water stored in the ozone mixing tank 35 is repeatedly circulated through the water absorption pipe 42 and the mixing pipe 46 by the air mixture pump 45 for a predetermined time. And the high concentration ozone generated with the ozone generator 40 is inject | poured into the water absorption pipe 42 in the middle of the circulation through the supply pipe 41, and mixed sewage is cleaned with this high concentration ozone.

  Further, an ultrafine bubble device 47 is provided in the middle of the mixing pipe 46, and the mixed sewage is passed through the ultrafine bubble device 47 to supply ultrafine bubbles (oxygen), and the treated water W further purified from the mixed sewage is obtained. Generate. By supplying this high-concentration ozone and ultrafine bubbles, mixed sewage can be generated in normal treated water W.

Treated water storage tank 30 also has the same configuration as that of the first embodiment, the generated treated water W with ozone mixing tank 35 has been transferred to the treated water storage tank 30 through a flue 39 returned by treated water transfer pump 38 after until it sent directly through the treated water returned flue 64 which arranged possible fitting b sever the processing pressure feed pump 31 to the discharge tank 16 of the wastewater treatment facility 2 or via the settler overflow weir 14 into discharge tank 16 Store. In addition, the treated water transfer pump 38 is provided in the upper part of the ozone mixing tank 35, whereby only purified treated water (so-called supernatant water) W is transferred to the treated water storage tank 30.

The processing water W Ru are sent directly to the discharge tank 16 or via a settler overflow weir 14 into discharge tank 16, after being sterilized by sterilizing apparatus 43 and sent to the discharge tank 16. The treated water W sent to the discharge tank 16 is discharged to an external sewer 16a, etc., and a part of the treated water W is sent to the ozone mixing tank 35 and used effectively as described above.

  Similarly to the first embodiment, the exhaust ozone removing device 50 also releases exhaust ozone that has not been dissolved in the mixed sewage in the ozone mixing tank 35 to a prescribed concentration or less. As a result, the discharge of exhaust ozone is prevented to prevent environmental pollution.

Similarly, antifoaming device 57, when the foam treated water storage tank 30 has occurred, an antifoaming agent, through flue 65 and antifoam spray 37 returns defoamer by metering pump 56 from the defoaming tank 55 Supply and extinguish the bubbles. Thereby, the surrounding contamination by the leak of foam is prevented.

1 excess sludge reduction device 2 wastewater treatment facility 10 pretreatment tank 10a adjusting tank 11 an aeration tank 12 an aeration tank for pressure pump 14 settler weir 14a sedimentation tank 14b sedimentation tank pump 15 excess sludge thickening tank 16 discharge tank 16a drainage Or sewer, etc. 17 Discharge tank pressure feed pump 18 Surplus sludge pressure feed pump 20 Surplus sludge storage tank 21 Surplus sludge transfer pump 22 Blower 23 Air pipe 24 Aeration device 26 Overflow pipe 26a Drain hole 27 Dilution water tank 28 Dilution water transfer pump 30 Treatment water reservoir 31 the process water pressure Okupo pump 35 ozone mixing tank 36 ozone mixing tank circulation pump 37 antifoam spray 38 treated water transfer pump 39 returns flue 40 ozone generator 41 supply pipe 42 suction pipe 43 sterilizing apparatus 44 circulation mechanism 45 Air-mixing pump 46 Mixing tube 47 Ultra-fine bubble device 48 Today Object prevention network 49 Swirling flow plate 50 Exhaust ozone removal device 51 Exhaust ozone transfer pipe 52 Pressure feed fan 54 Exhaust ozone discharge pipe 55 Defoaming tank 56 Metering pump 57 Defoaming device 60 Treated water pressure feed pipe 61 Excess sludge pressure feed pipe 62 Treated water feed water pipes 63 excess sludge transfer pipe 64 the treated water returned flue 65 antifoam transfer tube 66 overflow water returns flue a, b, c, d disengaging possible fitting S excess sludge W treated water

Claims (5)

A industrial effluent the stationary wastewater treatment plant (2) to handle the excess sludge (S) which occurs upon treatment with stationary excess sludge reduction device,
For the excess sludge transferred from the excess sludge pressure pump (18) in the excess sludge concentration tank (15) of the wastewater treatment facility by the excess sludge pressure feed pipe (61) , and for the aeration tank in the aeration tank (11) of the wastewater treatment facility The excess sludge transferred from the pressure pump (12) by the excess sludge pressure feed pipe (61) , and the treated water pressure feed pipe (60) from the discharge tank pressure feed pump (17) in the discharge tank (16) of the wastewater treatment facility. An ozone mixing tank (35) which stores treated water (W) to be transferred and includes an ozone mixing tank circulation pump (36) inside;
The mixed sewage of the excess sludge and treated water stored in the ozone mixing tank is repeatedly circulated for a certain period of time through the water absorption pipe (42) and the mixing pipe (46) by the air-mixing pump (45). A circulation mechanism (44) for injecting high-concentration ozone generated by the generator (40) and then passing through the ultrafine bubble device (47) to generate the mixed wastewater into purified treated water;
The treated water of the ozone mixing tank, after being transported through the transfer tube (39) by treatment water transfer pump (38), the waste water treatment facilities through the treated water return flue (64) by treatment pressure feed pump (31) Treated water storage tank (30) for storing until it is sent to the discharge tank,
An exhaust ozone removal device (50) for processing exhaust ozone not dissolved in the ozone mixing tank to a specified concentration or less and releasing it;
Stationary surplus sludge reduction device equipped with. A industrial effluent the stationary wastewater treatment plant (2) to handle the excess sludge (S) which occurs upon treatment with stationary excess sludge reduction device,
For the excess sludge transferred from the excess sludge pump (18) in the excess sludge concentration tank (15) of the wastewater treatment facility by the excess sludge pressure feed pipe (61) , and for the aeration tank of the aeration tank (11) of the wastewater treatment facility The excess sludge transferred from the pressure pump (12) by the excess sludge pressure feed pipe (61) , and the treated water pressure feed pipe (60) from the discharge tank pressure feed pump (17) in the discharge tank (16) of the wastewater treatment facility. An ozone mixing tank (35) which stores treated water (W) to be transferred and includes an ozone mixing tank circulation pump (36) inside;
The mixed sewage of the excess sludge and treated water stored in the ozone mixing tank is repeatedly circulated for a certain period of time through the water absorption pipe (42) and the mixing pipe (46) by an air-mixing pump (45), A circulation mechanism (44) for injecting high-concentration ozone generated by the generator (40) and then passing through the ultrafine bubble device (47) to generate the mixed wastewater into purified treated water;
The treated water of the ozone mixing tank, after being transported through the transfer tube (39) by treatment water transfer pump (38), the waste water treatment facilities through the treated water return flue (64) by treatment pressure feed pump (31) A treated water storage tank (30) for storing until it is sent to the discharge tank via the settling tank overflow weir (14),
An exhaust ozone removal device (50) for processing exhaust ozone not dissolved in the ozone mixing tank to a specified concentration or less and releasing it;
Stationary surplus sludge reduction device equipped with. Industrial wastewater a stationary wastewater treatment plant (2) in excess sludge reduction apparatus for a mobile vehicle-mounted to handle the excess sludge (S) generated when the process,
Surplus sludge transported by surplus sludge pumping pipe (61) provided with connectable connector (d) from surplus sludge pressure pump (18) in surplus sludge concentration tank (15) of the wastewater treatment facility, and wastewater treatment The excess sludge transferred from the aeration tank pressure feed pump (12) in the facility aeration tank (11) by the excess sludge pressure feed pipe (61) and the connectable / disconnectable connector (d) is temporarily stored and scattered inside. An excess sludge storage tank (20) comprising a gas device (24);
Temporary storage of treated water transferred by a treated water pressure feed pipe (60) provided with a connectable connector (c) from a discharge tank pressure feed pump (17) of the discharge tank (16) in the wastewater treatment facility . Diluting water tank (27),
The pooled with a certain amount of excess sludge from the excess sludge storage tank is transferred by the excess sludge transfer pump (21), and a certain amount of treated water that is transported by the dilution water transfer pump (28) from the dilution water tank, an internal An ozone mixing tank (35) provided with a circulation pump (36) for the ozone mixing tank;
The mixed sewage of the excess sludge and treated water stored in the ozone mixing tank is repeatedly circulated for a certain period of time through the water absorption pipe (42) and the mixing pipe (46) by an air-mixing pump (45), A circulation mechanism (44) that generates high-concentration ozone generated by a generator (40) and then passes through an ultrafine bubble device (47) to generate purified treated water ( W ) , and
After the treated water in the ozone mixing tank is transferred through the transfer pipe (39) by the treated water transfer pump (38), the treated water is provided with the connectable / disconnectable connector (b) from the treated water pressure pump (31). treated water storage tank for storing returned through flue (64) to be sent to discharge tank of the wastewater treatment facility (30),
An exhaust ozone removal device (50) for processing exhaust ozone not dissolved in the ozone mixing tank to a specified concentration or less and releasing it;
Mobile sludge reduction device equipped with mobile vehicles . Industrial wastewater a stationary wastewater treatment plant (2) in excess sludge reduction apparatus for a mobile vehicle-mounted to handle the excess sludge (S) generated when the process,
Surplus sludge transported by surplus sludge pumping pipe (61) provided with connectable connector (d) from surplus sludge pressure pump (18) in surplus sludge concentration tank (15) of the wastewater treatment facility, and wastewater treatment The excess sludge transferred from the aeration tank pressure feed pump (12) of the aeration tank (11) in the facility by the excess sludge pressure feed pipe (61) and the connectable / disconnectable connector (d) is temporarily stored and scattered inside. An excess sludge storage tank (20) comprising a gas device (24);
Temporary storage of treated water transferred by a treated water pressure feed pipe (60) provided with a connectable connector (c) from a discharge tank pressure feed pump (17) of the discharge tank (16) in the wastewater treatment facility . Diluting water tank (27),
The pooled with a certain amount of excess sludge from the excess sludge storage tank is transferred by the excess sludge transfer pump (21), and a certain amount of treated water that is transported by the dilution water transfer pump (28) from the dilution water tank, an internal An ozone mixing tank (35) provided with a circulation pump (36) for the ozone mixing tank;
The mixed sewage of the excess sludge and treated water stored in the ozone mixing tank is repeatedly circulated for a certain period of time through the water absorption pipe (42) and the mixing pipe (46) by an air-mixing pump (45), A circulation mechanism (44) that generates high-concentration ozone generated by a generator (40) and then passes through an ultrafine bubble device (47) to generate purified treated water ( W ) , and
After the treated water in the ozone mixing tank is transferred through the transfer pipe (39) by the treated water transfer pump (38), the treated water is provided with the connectable / disconnectable connector (b) from the treated water pressure pump (31). the treated water storage tank for storing up to wastewater treatment through property settler overflow weir (14) is sent to the discharge tank (16) and (30) through the return flue (64),
An exhaust ozone removal device (50) for processing exhaust ozone not dissolved in the ozone mixing tank to a specified concentration or less and releasing it;
Mobile sludge reduction device equipped with mobile vehicles . When bubbles are generated in the treated water storage tank (30), an antifoaming agent is supplied from the defoaming tank (55) through the antifoaming agent transfer pipe (65) by the metering pump (56) to eliminate the bubbles. The surplus sludge reduction device according to any one of claims 1 to 4, further comprising a foam device (57).

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