JP6692721B2 - Wastewater treatment equipment - Google Patents

Description

  The technology disclosed herein relates to a wastewater treatment device.

  Patent Document 1 describes a water treatment device for purifying wastewater from factories, homes, and the like. This water treatment device is filled with a flow rate adjusting tank of a predetermined capacity, a filter medium to which aerobic microorganisms adhere, and an aeration tank for performing aeration, and to precipitate pollutants in the wastewater discharged from the aeration tank. A settling tank to be activated, a biological filter tank filled with a porous filter medium to which anaerobic microorganisms are attached, and supplied with supernatant water separated from pollutants in the settling tank, and water discharged from the biological filter tank is sterilized. It is equipped with a treated water tank.

JP, 2003-245686, A

  In the water treatment device described in Patent Document 1, the flow rate adjusting tank, the adhesion aeration tank, the sedimentation tank, the biological filtration tank, and the treated water tank are arranged side by side so that the wastewater sequentially passes through each tank. Has been done. Since the water treatment device described in Patent Document 1 has a plurality of tanks arranged side by side, there is a disadvantage that the installation area becomes large.

  The technique disclosed here is made in view of such a point, and the purpose is to reduce the installation area of the wastewater treatment device.

  The technology disclosed herein relates to a wastewater treatment device. The wastewater treatment device includes a storage tank configured to temporarily store the wastewater while the wastewater flows in, and a septic tank configured to purify and discharge the wastewater sent from the storage tank. ..

  The septic tank is an inflow tank configured to allow the wastewater to flow from the storage tank, and the wastewater that has passed through the inflow tank flows in, and a microorganism preparation is added and microorganisms configured to propagate the microorganisms. A breeding tank, and a microbial treatment tank which is filled with a porous material on which the microorganisms are implanted and in which the wastewater that has passed through the microorganism breeding tank is filled, and which is configured to perform microbial treatment of the wastewater, and the microorganisms And a discharge tank configured to discharge the waste water to the outside of the septic tank while the waste water passing through the treatment tank flows in.

The septic tank is configured such that the inflow tank, the microbial breeding tank, the microbial treatment tank, and the discharge tank are arranged side by side in an integrated manner in a communication state of adjoining one another in order and arranged in the storage tank. It is set up.

  According to this configuration, the wastewater treatment device temporarily stores the wastewater to be treated in the storage tank and sends the wastewater from the storage tank to the septic tank.

  The septic tank has an inflow tank, a microbial propagation tank, a microbial treatment tank, and a discharge tank, and the wastewater passes through each tank in order. The septic tank performs microbial treatment while the wastewater passes through. Wastewater is purified and discharged from the septic tank. The septic tank is composed of an inflow tank, a microbial propagation tank, a microbial treatment tank, and an exhaust tank, which are arranged side by side in a lateral direction, and the septic tank is disposed in the storage tank. Therefore, the installation area of the wastewater treatment device is determined by the size of the storage tank. Therefore, the installation area of the wastewater treatment device can be reduced.

  The wastewater treatment device may have the following configuration.

  That is, the storage tank may be composed of a pit recessed in the ground, and the septic tank may be installed in the pit. By doing so, the installation area of the wastewater treatment device is determined only by the size of the pit, so that the installation area of the wastewater treatment device becomes smaller.

  Unlike this, the storage tank may be configured by a tank installed on the ground or floor, and the septic tank may be built in the tank. By doing so, the installation area of the wastewater treatment device is determined only by the size of the tank, so that the installation area of the wastewater treatment device becomes smaller. Further, the tank can be installed not only on the ground but also on the floor in various buildings (including the underground).

A microbial preparation may be added to the inflow tank .

By doing so, the microbial preparation flows into the microbial breeding tank together with the wastewater from the inflow tank .

  A pump installed in the storage tank and configured to pump the wastewater to the septic tank when the water level in the storage tank exceeds a specified water level may be provided.

  The flow rate of waste water flowing into the storage tank cannot be adjusted because it is determined by the amount of waste water discharged from the waste water discharge source (for example, a kitchen). The above configuration includes a pump that pumps waste water from the storage tank to the septic tank, and the pump operates according to the water level in the storage tank. Therefore, the flow rate of the waste water passing through the septic tank can be adjusted independently of the flow rate of the waste water flowing into the storage tank. By appropriately adjusting the flow rate of the wastewater passing through the septic tank, it becomes possible to surely and sufficiently perform the microbial treatment of the wastewater in the septic tank. As a result, the purification performance of the wastewater treatment device is improved.

  Further, since the wastewater below the specified water level is constantly accumulated in the storage tank, it becomes possible to sufficiently perform the microbial treatment of the wastewater in the configuration in which the microbial treatment is performed in the storage tank. This also enhances the purification performance of the wastewater treatment device.

  An overflow pipe configured to discharge the wastewater from the storage tank when the water level in the storage tank exceeds a regulated water level may be attached to the storage tank.

  Since the septic tank is arranged in the storage tank, when the discharge of the waste water in the septic tank is delayed for some reason, the waste water overflows from the storage tank. In the above structure, since the overflow pipe is attached to the storage tank, the waste water is prevented from overflowing from the storage tank.

  As described above, according to the wastewater treatment device, the installation area of the wastewater treatment device can be reduced by disposing the septic tank in the storage tank.

FIG. 1 is a block diagram showing the configuration of a wastewater treatment system to which the wastewater treatment device disclosed herein is applied. FIG. 2 is a perspective view showing the wastewater treatment device according to the first embodiment. FIG. 3 is a sectional view conceptually showing the structure of the wastewater treatment device according to the first embodiment. FIG. 4 is a perspective view showing a wastewater treatment device according to the second embodiment. FIG. 5: is sectional drawing which shows notionally the structure of the wastewater treatment apparatus which concerns on Embodiment 2. As shown in FIG.

  Hereinafter, an embodiment of the wastewater treatment device disclosed herein will be described with reference to the drawings. The following description of the embodiments is exemplary. In addition, the following description is not intended to limit the technology disclosed herein, its application, or its application.

  FIG. 1 shows the configuration of a wastewater treatment system 1 to which a wastewater treatment device is applied. The wastewater treatment devices 2 and 20 purify and discharge wastewater discharged from the kitchen 11, for example. The wastewater discharged from the kitchen 11 first flows into the oil separation tank (so-called grease trap) 12. Although the oil separation tank 12 is not shown in the drawings because its basic structure is well known, it removes foreign matters and the like in the wastewater and separates oil and fats. The wastewater from which the oil and fat components have been separated in the oil separation tank 12 flows into the wastewater treatment devices 2 and 20.

  The wastewater treatment devices 2 and 20 perform microbial treatment on the wastewater from which the oil and fat has been separated by the oil separation tank 12. The wastewater treatment devices 2 and 20 allow the wastewater treatment system 1 to further reduce the normal hexane extract substance content (animal and vegetable oils and fats content) and then discharge the wastewater to sewage. The wastewater treatment devices 2 and 20 disclosed herein have a storage tank 3 for temporarily storing wastewater and a septic tank 4 for treating wastewater with microorganisms.

(Embodiment 1)
2 and 3 conceptually show the configuration of the wastewater treatment device 2 according to the first embodiment. In the wastewater treatment device 2 according to the first embodiment, the storage tank 3 is composed of a concrete pit 31 recessed in the ground. The septic tank 4 is installed inside the concrete pit 31. The wastewater treatment device 2 of the first embodiment is suitable for treating wastewater in the kitchen 11 having a relatively large scale. It should be noted that FIG. 2 does not show the lid 32 that closes the upper opening of the concrete pit 31 and various pipes.

  As shown in FIG. 3, an inflow pipe 23 is connected to the concrete pit 31. The inflow pipe 23 is connected to the oil separation tank 12 not shown in FIG. The inflow pipe 23 sends wastewater from the oil separation tank 12 to the concrete pit 31 by, for example, a natural gradient.

  As described above, the concrete pit 31 functions as the storage tank 3 that temporarily stores the wastewater. A lid 32 is attached to the concrete pit 31 so as to close the upper opening. The lid 32 has an opening / closing portion 33. In the illustrated example, two opening / closing sections 33 are provided on the lid 32. One of the opening / closing sections 33 corresponds to a first tank 41 and a second tank 42 of the septic tank 4 described later, and the other of the opening / closing sections 33 corresponds to a third tank 43 and a fourth tank 44 of the septic tank 4. The number of opening / closing sections 33 may be set to an appropriate number. By opening the opening / closing part 33, the inside of the concrete pit 31 and the septic tank 4 are opened to the outside. The opening / closing part 33 is used for maintenance of the wastewater treatment device 2. For example, as will be described later, the opening / closing portion 33 is opened when the microbial agent is put into the septic tank 4 or the concrete pit 31.

  In the wastewater treatment device 2 of the present embodiment, the microbial agent is added to the wastewater stored in the concrete pit 31. As the microbial preparation, for example, "Bio Wrap" manufactured by Kenko Koken Co., Ltd. may be used.

  An aeration device 51 is installed in the concrete pit 31. In FIG. 3, the aeration device 51 is conceptually drawn for convenience of illustration. The aeration device 51 includes, for example, a pipe provided with a large number of holes for ejecting bubbles, and an air pump for sending air into the pipe. The pipe is arranged so as to extend in the concrete pit 31, for example. The aeration device 51 always operates. Thereby, the wastewater in the concrete pit 31 is aerated. The wastewater treatment device 2 is configured to promote the growth and fixation of microorganisms in the storage tank 3.

  A pump 52 is also installed in the concrete pit 31. The pump 52 is a float switch type pump. When the water level in the concrete pit 31 reaches a prescribed water level, the float switch 53 detects this and the pump 52 operates. With this configuration, the storage tank 3 constituted by the concrete pit 31 stores the waste water until the water level reaches the specified water level. As described above, the wastewater in the concrete pit 31 is charged with the microbial agent and aerated. This wastewater treatment device also performs microbial treatment of wastewater in the storage tank 3. This improves the purification performance of the wastewater treatment device 2.

  The discharge port 521 of the pump 52 is connected to the septic tank 4. The pump 52 pumps the wastewater stored in the concrete pit 31 to the septic tank 4. As will be described in detail later, the septic tank 4 performs microbial treatment of wastewater. The pumping amount of the pump 52 is set to a predetermined amount so that the flow rate of the waste water passing through the septic tank 4 is a flow rate at which the microbial treatment can be sufficiently and reliably performed.

  An overflow pipe 54 is further installed in the concrete pit 31. The overflow pipe 54 is configured by a pipe that extends vertically and has an open upper end. The overflow pipe 54 has an upper end opened at a position lower than the oil separation tank 12. The overflow pipe 54 forces the water in the concrete pit 31 when the water level in the concrete pit 31 exceeds a regulated water level (that is, a position lower than the oil separation tank 12 and lower than the upper end of the septic tank 4). Specifically, it is discharged to the outside of the concrete pit 31 (see the dashed-dotted arrow in FIG. 3).

  The septic tank 4 is installed at the bottom of the concrete pit 31, as shown in FIGS. 2 and 3. The inside of the septic tank 4 is divided into four tanks of a first tank 41, a second tank 42, a third tank 43, and a fourth tank 44. In other words, the septic tank 4 is configured by horizontally arranging the first tank 41, the second tank 42, the third tank 43, and the fourth tank 44, which are arranged side by side in the lateral direction. Among these four tanks, the adjacent tanks communicate with each other, and the wastewater passes through the first tank 41, the second tank 42, the third tank 43, and the fourth tank 44 in order. That is, the wastewater that has passed through the first tank 41 flows into the second tank 42 adjacent to the first tank 41. The wastewater that has passed through the second tank 42 flows into the third tank 43 adjacent to the second tank 42. The wastewater that has passed through the third tank 43 flows into the fourth tank 44 adjacent to the third tank 43.

  In the septic tank 4 of the first embodiment, the first tank 41 constitutes an inflow tank into which the waste water pumped from the storage tank 3 flows. The discharge port 521 of the pump 52 is connected to the bottom of the first tank 41. The first tank 41 and the second tank 42 communicate with each other above the septic tank 4. The wastewater flows in the first tank 41 from bottom to top. A predetermined amount of the microbial preparation is periodically (for example, once a day) put into the first tank 41. The microbial preparation is put into the first tank 41 through the opening / closing section 33 described above.

  The second tank 42 is a microorganism breeding tank for breeding microorganisms. A resin microorganism carrier 421 is suspended in the second tank 42. In addition to the second tank 42, the microorganism carrier 421 may be suspended in the first tank 41. The microbial preparation dissolved together with the wastewater flows into the second tank 42 from the first tank 41. Then, the microorganisms propagate in the second tank 42. The second tank 42 and the third tank 43 communicate with each other at the bottom of the septic tank 4. The wastewater flows in the second tank 42 from top to bottom.

  The septic tank 4 may be configured to perform aeration in the first tank 41 and / or the second tank 42.

  The third tank 43 is a microbial treatment tank that performs microbial treatment of wastewater. The third tank 43 is filled with a porous material 431 (for example, zeolite) on which microorganisms are implanted. The porous material 431 expands the landing area of microorganisms. The third tank 43 and the fourth tank 44 communicate with each other above the septic tank 4. The wastewater flows in the third tank 43 from bottom to top. In the third tank 43, the wastewater is purified by the adsorbing action of the porous material 431 and the degrading action of microorganisms. The porous material 431 is regularly taken out from the third tank 43 and washed. Further, a predetermined amount of the microbial preparation may be periodically added to the third tank 43.

  The wastewater treated in the third tank 43 flows into the fourth tank 44 from the upper part of the septic tank 4. A discharge pipe 45 is arranged in the fourth tank 44. The fourth tank 44 is a discharge tank for discharging the wastewater treated in the septic tank 4. The discharge pipe 45 opens upward in the fourth tank 44 at a predetermined height position. When the water level of the fourth tank 44 exceeds the opening of the discharge pipe 45, the treated wastewater is discharged to the outside of the wastewater treatment device 2 through the discharge pipe 45. Since the wastewater in the fourth tank 44 is the water that has been treated in the septic tank 4, for example, in order to confirm the treatment state of the wastewater treatment device 2, the wastewater in the fourth tank 44 is sampled and analyzed. You can do it.

  In the concrete pit 31, a water sprinkler 55 configured to spray defoaming water on the first tank 41, the second tank 42, the third tank 43, and the fourth tank 44 is also provided above the septic tank 4. It is arranged. By spraying water from the sprinkler 55 toward the water surfaces of the first tank 41, the second tank 42, the third tank 43, and the fourth tank 44, it is possible to eliminate bubbles floating on the water surface.

  In the wastewater treatment device 2 having this configuration, the septic tank 4 is arranged in the concrete pit 31 which is the storage tank 3. Therefore, the installation area of the wastewater treatment device 2 is determined only by the size of the concrete pit 31, and the installation area of the wastewater treatment device 2 can be made compact.

  Further, the wastewater treatment device 2 temporarily stores the wastewater in the storage tank 3, and then pressure-feeds the wastewater from the storage tank 3 to the septic tank 4. Although the discharge amount of waste water from the kitchen 11 cannot be adjusted, the waste water is discharged from the first tank 41 in the septic tank 4 within a range not exceeding the treatment capacity of the septic tank 4 regardless of the discharge amount of the waste water from the kitchen 11. , The second tank 42, the third tank 43, and the fourth tank 44 can be sequentially passed. The wastewater treatment device 2 can reliably perform the microbial treatment of the wastewater while the wastewater passes through each layer of the septic tank 4.

  Further, in the wastewater treatment device 2, the aeration device 51 is provided in the storage tank 3 and the microbial agent is added to the wastewater stored in the storage tank 3 so that the wastewater can be stored in the storage tank 3 even while being stored. Perform microbial treatment. Therefore, the purification performance of the wastewater treatment device 2 is enhanced.

  In addition, in the wastewater treatment device 2, the overflow pipe 54 is attached to the storage tank 3 to prevent the wastewater from overflowing from the storage tank 3 even if the discharge of the wastewater from the septic tank 4 is delayed for some reason. To be done. Since the upper end opening of the overflow pipe 54 is set to a position lower than that of the oil separation tank 12, in the present configuration in which waste water flows from the oil separation tank 12 to the storage tank 3 due to a natural gradient, Overflow can be reliably prevented.

(Embodiment 2)
4 and 5 show a wastewater treatment device 20 according to the second embodiment. In the wastewater treatment device 20 of the second embodiment, the storage tank 3 is configured by the tank 30 installed on the ground, and the septic tank 40 is built in the tank 30. This wastewater treatment device 20 makes it possible to install the wastewater treatment device 20 even when the concrete pit 31 of the wastewater treatment device 2 according to the first embodiment cannot be constructed due to, for example, restrictions on the location. The wastewater treatment device 20 of the second embodiment is suitable for treating the wastewater of the kitchen 11 having a relatively small scale. The wastewater treatment device 20 (that is, the tank 30) of the second embodiment can be installed on the floor surface in various buildings (including underground). In addition, in FIG. 4, the piping and the like in the wastewater treatment device 20 are omitted.

  Hereinafter, the wastewater treatment device 20 shown in FIGS. 4 and 5 will be described. In the wastewater treatment device 20, the same components as those of the wastewater treatment device 2 shown in FIGS. The description may be omitted.

  The tank 30 that constitutes the storage tank 3 has a main body portion 301 and a lid portion 302. The lid 302 closes the upper end opening of the main body 301. Although not shown, the main body 301 and the lid 302 may be bolted to each other via a flange, for example.

  The tank 30 may be made of, for example, FRP (Fiber-Reinforced Plastics) in consideration of sufficient strength and corrosion resistance. However, the material of the tank 30 is not particularly limited, and the tank 30 may be made of other synthetic resin or metal (for example, stainless steel). The capacity of the tank 30 can also be appropriately set according to the scale of the kitchen 11. For example, a plurality of types of tank capacities such as large, medium, and small are set in advance as specifications, and a tank 30 having a capacity compatible with the plurality of types of tank capacities is adopted according to the scale of the kitchen 11 to be installed. Good.

  A pedestal 303 for installation is provided at the four corners of the lower end of the main body 301. The pedestal 303 enables the tank 30 to be installed stably. Further, since the lower surface of the tank is lifted from the ground by the amount of the pedestal 303, it is possible to insert, for example, a forklift claw under the tank 30. It becomes possible to easily perform the installation work of the tank 30.

  The lid 302 is provided with a plurality of opening / closing sections 306. In the illustrated example, four opening / closing sections 306 are provided so as to correspond to the second tank 402, the third tank 403, the fourth tank 404, and the fifth tank 405 of the septic tank 40 described later. The number of opening / closing sections 306 may be set to an appropriate number. By opening the opening / closing part 306, the inside of the tank 30 and the septic tank 40 built in the tank 30 can be opened to the outside without opening the lid part 302. The opening / closing unit 306 is used for maintenance of the wastewater treatment device 20.

  The inflow pipe 23 is connected to the main body 301. Waste water sent from the oil separation tank 12 (see FIG. 1) flows into the main body 301 through the inflow pipe 23.

  A base 304 for installing the septic tank 40 is provided on the bottom of the main body 301. Further, a concave portion 305 in which a pump 52 for pumping wastewater to the septic tank 40 is installed is provided at a corner of the bottom of the main body 301.

  Although not shown in the drawings, the pump 52 is configured to mechanically or electrically detect when the water level in the main body 301 reaches a predetermined regulated water level and operate. As described above, the pump 52 may be a float switch type pump.

  An aeration device 51 is arranged in the main body 301. Also in FIG. 5, the aeration device 51 is conceptually drawn for the sake of illustration. It is configured to have. The microbial preparation is also added to the waste water stored in the main body 301. The microorganism preparation may be introduced through the opening / closing unit 306. Alternatively, the lid 302 may be opened.

  An overflow pipe 54 is attached inside the main body 301. When the water level in the main body 301 exceeds the regulated water level, the waste water is discharged from the tank 30 by the overflow pipe 54, so that the waste water is prevented from overflowing from the tank 30.

  The septic tank 40 of the wastewater treatment device 20 of the second embodiment has five tanks of a first tank 401, a second tank 402, a third tank 403, a fourth tank 404 and a fifth tank 405.

  The first tank 401 is an inflow tank into which the wastewater pumped by the pump 52 flows. The discharge pipe 522 connected to the pump 52 extends upward, and the discharge port of the discharge pipe 522 opens downward in the upper part of the first tank 401. With this configuration, the wastewater treatment device 20 can send wastewater to the septic tank 40 from the main body portion 301 of the tank 30, which is the storage tank 3, even when installed on the ground.

  The first tank 401 and the second tank 402 adjacent to the first tank 401 communicate with each other at the bottom of the septic tank 40. The wastewater flows in the first tank 401 from top to bottom.

  The second tank 402 is a tank into which the microbial preparation is put, and constitutes a part of the microorganism breeding tank. A predetermined amount of the microbial agent is regularly (for example, once a day) charged into the second tank 402. The microbial preparation is put into the second tank 402 by opening the opening / closing part 306 or opening the lid part 302. The second tank 402 and the third tank 403 adjacent to the second tank 402 communicate with each other at the upper part of the septic tank 40. The wastewater flows in the second tank 402 from bottom to top.

  The third tank 403 is a microorganism breeding tank for breeding microorganisms. As described above, the resin-made microorganism carrier 421 is suspended in the third tank 403. In addition to the third tank 403, the microorganism carrier 421 may be suspended in the second tank 402. The microbial preparation dissolved together with the wastewater flows into the third tank 403 from the second tank 402. Then, the microorganisms propagate in the third tank 403. The third tank 403 and the fourth tank 404 communicate with each other at the bottom of the septic tank 4. The wastewater flows in the third tank 403 from top to bottom.

  Aeration may be performed in the second tank 402 and / or the third tank 403.

  The fourth tank 404 is a microbial treatment tank that performs microbial treatment of wastewater. The fourth tank 404 is filled with a porous material 431 (for example, zeolite). The wastewater flows in the fourth tank 404 from bottom to top. In the fourth tank 404, the wastewater is purified by the adsorbing action of the porous material 431 and the degrading action of microorganisms.

  The fourth tank 404 and the fifth tank 405 communicate with each other above the septic tank 40. The wastewater treated in the fourth tank 404 flows into the fifth tank 405 from the upper part of the septic tank 40. The fifth tank 405 is a discharge tank for discharging the wastewater treated in the septic tank 40. A discharge pipe 45 is arranged in the fifth tank 405. The discharge pipe 45 opens upward in the fifth tank 405 at a predetermined height position. When the water level of the fifth tank 405 exceeds the opening of the discharge pipe 45, the treated wastewater is discharged to the outside of the wastewater treatment device 20 through the discharge pipe 45.

  Although not shown in FIG. 5, a sprinkler for spraying defoaming water to each tank of the septic tank 40 may be provided in the tank 30.

  In the wastewater treatment device 20 having this configuration, the septic tank 40 is built in the tank 30 that is the storage tank 3. Therefore, the installation area of the wastewater treatment device 20 is determined only by the size of the tank 30, and the installation area of the wastewater treatment device 20 can be made compact.

  Further, since the wastewater treatment device 20 also includes the tank 30 that is the storage tank 3 and the septic tank 40, as described above, it becomes possible to reliably perform the microbial treatment of the wastewater.

  Further, also in the wastewater treatment device 20, the aeration device 51 is provided in the tank 30, and the microbial agent is added to the wastewater stored in the tank 30, so that the microbial treatment of the wastewater even while the wastewater is accumulated in the tank 30. Is done. Therefore, the purification performance of the wastewater treatment device 20 is enhanced.

  In addition, also in the wastewater treatment device 20, by mounting the overflow pipe 54, it is possible to prevent the wastewater from overflowing from the tank 30.

  Since the wastewater treatment device 20 of the second embodiment has an integrated structure in which the septic tank 40 is built in the tank 30 which is the storage tank 3, the installation is relatively easy. The wastewater treatment device 20 of the second embodiment can also be used for the purpose of treating wastewater associated with cooking by temporarily installing it in a venue such as an event where food and drink are cooked.

  In addition, the wastewater treatment device 20 of the second embodiment can be configured to arrange a plurality of wastewater treatment devices 20 in parallel to perform wastewater treatment so that a treatment capacity corresponding to the discharge flow rate of wastewater can be secured. is there.

  Note that the configurations of the wastewater treatment devices 2 and 20 shown in the respective drawings are examples and can be appropriately modified. For example, the number of tanks included in the septic tanks 4 and 40 is not limited to the example shown in the figure, and can be appropriately increased or decreased.

2, 20 Wastewater treatment device 3 Storage tank 31 Concrete pit (storage tank)
30 tanks (storage tanks)
301 Main body 302 Lids 4, 40 Septic tank 41 First tank (inflow tank)
42 Second tank (microorganism breeding tank)
43 Third tank (microorganism treatment tank)
44 Fourth tank (discharge tank)
401 First tank (inflow tank)
402 Second tank (microorganism breeding tank)
403 Third tank (microbial breeding tank)
404 Fourth tank (microorganism treatment tank)
405 5th tank (discharging tank)
52 pump 54 overflow pipe

Claims (6)

A storage tank configured to temporarily store the wastewater as the wastewater flows in,
A septic tank configured to purify and discharge the wastewater sent from the storage tank,
The septic tank is
An inflow tank configured to allow the wastewater to flow from the storage tank;
Along with the wastewater that has flowed through the inflow tank, a microbial preparation is added and a microbial propagation tank configured to propagate microorganisms,
Along with the wastewater flowing through the microorganism breeding tank, a porous material on which the microorganisms are implanted is filled, and a microbial treatment tank configured to perform microbial treatment of the wastewater,
The wastewater that has passed through the microorganism treatment tank flows in, and has a discharge tank configured to discharge the wastewater to the outside of the septic tank,
The septic tank is configured such that the inflow tank, the microbial breeding tank, the microbial treatment tank, and the discharge tank are arranged side by side in an integrated manner in a communication state of adjoining one another in order and arranged in the storage tank. Wastewater treatment equipment installed. The wastewater treatment apparatus according to claim 1,
A wastewater treatment device in which a microbial preparation is introduced into the inflow tank. The wastewater treatment device according to claim 1 or 2 ,
The storage tank is composed of a pit recessed in the ground,
The septic tank is a wastewater treatment device installed in the pit. The wastewater treatment device according to claim 1 or 2 ,
The storage tank is composed of a tank installed on the ground or floor,
The septic tank is a wastewater treatment device built in the tank. The wastewater treatment apparatus according to any one of claims 1 to 4,
A wastewater treatment device installed in the storage tank, comprising a pump configured to pump the wastewater to the septic tank when the water level in the storage tank exceeds a specified water level. The wastewater treatment apparatus according to any one of claims 1 to 5,
A wastewater treatment device in which an overflow pipe configured to discharge the wastewater from the storage tank is attached to the storage tank when the water level in the storage tank exceeds a regulated water level.

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