JP5154478B2 - Septic tank outer tank, water treatment equipment - Google Patents

Description

  The present invention relates to a construction technique of a water treatment apparatus that performs water treatment of water to be treated.

  Conventionally, in a water treatment apparatus for treating water to be treated such as domestic wastewater discharged from ordinary households and sewage such as industrial wastewater, a water treatment mechanism having a plurality of treatment units is accommodated in an outer septic tank. For example, Patent Document 1 listed below includes a water treatment mechanism that includes a primary treatment unit that performs anaerobic treatment of water to be treated and a secondary treatment unit that performs aerobic treatment of the water to be treated in the outer tank for the septic tank. A contained sewage treatment apparatus is disclosed.

  By the way, in this type of water treatment apparatus, the filling amount of the filler is designed in accordance with the treatment performance of the water to be treated. However, it is common to use a tank body corresponding to the desired discharged water quality. It was. For example, the first kind of water treatment apparatus in which the BOD (also referred to as “biochemical oxygen demand”) is 20 mg / L or less and the effluent water quality standard from the water treatment apparatus is BOD. In general, the second type water treatment apparatus is set to have a design specification such as the filling amount of the filler different depending on the water treatment performance required for each of the second type water treatment apparatuses with 10 mg / L or less. In that case, each septic tank was manufactured separately.

Therefore, the present inventors can use the outer tank for the septic tank having the same volume if the personnel to be treated are the same. Therefore, either of the first type water treatment device and the second type water treatment device can be used. We thought that a single type of outer tank for septic tank that could be used for water treatment equipment was feasible, and intensively studied the structure of this type of outer tank for septic tank. As a result of the study, the present inventors have arrived at the present invention.
Japanese Patent Laid-Open No. 10-146592

  The present invention relates to a plurality of water treatment apparatuses having the same personnel to be treated and having different effluent quality standards, and enables common use of outer tanks for septic tanks that contain a water treatment mechanism for treating treated water. It is an object of the present invention to provide a technique effective for reducing the production cost of an outer septic tank.

  The present invention is configured to solve the above problems. In addition, this invention is used suitably with respect to the water treatment apparatus which purifies the to-be-processed water, such as domestic wastewater discharged | emitted from a general household etc., industrial wastewater. The “water to be treated” as used herein may include water after treatment that has undergone a predetermined treatment such as purification treatment, or may be water before treatment.

  The outer tank for septic tanks according to the present invention is configured as a tank-like body that houses a water treatment mechanism for treating water to be treated. The water treatment mechanism accommodated in the outer tub for septic tank is configured to include at least each component of a primary treatment unit, a first filling region, a secondary treatment unit, a second filling region, and an inflow path. A water treatment mechanism having a configuration in which additional components are added to these components can also be used. For example, it is possible to provide an area for storing water to be treated, disinfecting processing, and the like.

  A primary processing part is comprised as a process part which performs the anaerobic process of to-be-processed water. The primary processing unit is provided with a first filling region filled with an anaerobic processing filler. The anaerobic treatment filler filled in the first filling region is configured to adhere to anaerobic microorganisms that anaerobically treat (reduce) organic pollutants in the treated water, and the treated water that is in contact with the anaerobic treatment filler. By the anaerobic treatment, the BOD of the water to be treated is reduced and the amount of sludge is reduced. In the primary treatment unit, a contaminant removal region in which a baffle for removing contaminants in the water to be treated is provided upstream of the first filling region.

  The secondary processing unit is configured as a processing unit that performs an aerobic treatment of the water to be treated. The secondary processing unit is provided with a second filling region filled with an aerobic processing filler. The aerobic treatment filler filled in the second filling region is configured to adhere to aerobic microorganisms that aerobically treat (oxidize) organic pollutants in the water to be treated in the presence of dissolved oxygen. The BOD of the water to be treated is reduced by the aerobic treatment of the water to be treated in contact with the treatment filler. In the secondary processing unit, a precipitation processing tank or a filtration processing tank that performs solid-liquid separation processing of water to be processed can be provided downstream of the second filling region. Moreover, the water processed by the primary processing part flows through this flowing water path to this secondary processing part.

The upper partition member partitions the upper part of the first or second filling region and regulates the flow of the anaerobic treatment or aerobic treatment filler corresponding to the filling region and allows the water to flow. Configured as a member. The lower partition member defines a lower portion of the first or second filling region in which the upper partition member is disposed, and regulates the flow of the anaerobic treatment filler corresponding to the filling region and allows the water flow. It is comprised as a partition member.

Septic for outer tub according to the present invention, especially with the change of the installation mode of at least one of the partition member of the upper partition member and a lower partition member, is configured to include a variable displacement mechanism for varying the capacity of the Filling area The According to such a configuration, by the capacity of the Filling area in the septic tank for outer tub in a variable, it is possible to adjust the performance of the water to be treated, a plurality of water treatment apparatus having different processing performance It becomes possible to provide the outer tank for septic tanks corresponding to. Therefore, regarding a plurality of water treatment devices having the same personnel to be treated and having different effluent quality standards, it is possible to share the septic tank outer tubs containing the water treatment mechanism for treating the water to be treated. The production cost of the outer tub can be reduced. Here, “the same target personnel” means that the effective capacity, the total length, the total width, the total height, etc. for water treatment in the space portion in the outer septic tank are substantially the same.

In the present invention, variable displacement mechanism for varying the capacity of the Filling region may have a configuration with a change in the installation mode of at least one of the partition member of the upper partition member and a lower partition member, in this configuration A configuration in which the installation mode of the partition member is changed by moving the upper partition member and the lower partition member in the outer tank for the septic tank automatically or manually and changing the mounting position thereof, or the upper partition member and the lower partition member The structure etc. which change the installation aspect of a division member by switching the attachment state and removal state of are widely included. Further, when changing the mounting position of the upper partition member and the lower partition member, the partition member can be moved in an appropriate direction such as a tank vertical direction or a tank horizontal direction.

Further, the septic tank for outer tub of a further embodiment according to the present invention, the variable capacity mechanism, at least one partition plate for partitioning the inner and Filling region of the septic tank for outer tub, an upper for holding the upper partition member It is preferable that the holding element and the lower holding element for holding the lower partition member are provided, and a plurality of holding elements of at least one of the upper holding element and the lower holding element are provided at different heights in the tank vertical direction. Thus, the capacity of Hama charge that at least one of the partition member of the upper partition member and a lower partition member by a plurality of holding elements are adjusted to the holding position of the vessel vertically different heights region is variable.
According to such a configuration, in order to be able to hold the upper partition member and the lower partition member, the structure of the variable capacity mechanism is simplified by using the holding elements provided in advance on the inner wall and partition plate of the septic tank outer tub. Can be realized.

Moreover, in the outer tank for septic tanks according to a further embodiment of the present invention, the capacity variable mechanism is used for water treatment of the primary treatment unit in accordance with the position adjustment of at least one of the upper partition member and the lower partition member. It is preferable that the upper holding element and the lower holding element are arranged so that the filling ratio of the anaerobic treatment filler occupying the effective capacity is variable in the range of 10 to 60%. Regarding the “effective capacity for water treatment of the primary treatment unit” here, of the capacity of the entire space of the primary treatment unit, the volume that is substantially effective for water treatment, that is, the water to be treated actually in normal use. The volume to be stored corresponds to the effective capacity here.
According to such a configuration, typically, a single type of septic tank outer tank is used, and in the septic tank outer tank, the anaerobic treatment filler is 10 to 10 times the effective capacity for water treatment of the primary treatment unit. First setting with a filling ratio of 30%, and an anaerobic treatment filler in the outer tank for the septic tank filled with a filling ratio of 20 to 60% with respect to the effective capacity for water treatment of the primary treatment unit. Setting of 2 is possible at least. And in the 1st setting of the outer tank for septic tanks, the water treatment apparatus with which the required processing performance is comparatively low is provided, and in the 2nd setting of the outer tank for septic tanks, the required processing performance is relatively A high water treatment device is provided.

The water treatment apparatus according to the present invention is configured as an apparatus in which a water treatment mechanism that performs water treatment of water to be treated is accommodated in a tank body. The water treatment mechanism accommodated in the tank body is at least configured by the above-described primary processing unit, first filling region, secondary processing unit, second filling region, inflow path, upper partition member, and lower partition member. Is done. And this tank main body is comprised using the above-mentioned outer tank for septic tanks.
According to such a structure, the water treatment apparatus using the highly versatile outer tank for septic tanks that can be used for other water treatment apparatuses having the same personnel to be treated and different effluent quality standards is realized.

  As described above, according to the present invention, a plurality of water treatment apparatuses having the same personnel to be treated and having different effluent quality standards are common to outer tanks for septic tanks that contain a water treatment mechanism for treating water to be treated. As a result, the manufacturing cost of the tank body can be reduced.

  Below, the structure of the water treatment apparatus of one Embodiment in this invention is demonstrated based on drawing. In addition, this Embodiment demonstrates the water treatment apparatus which processes the waste_water | drain (to-be-processed water) discharged | emitted from a general household.

  FIG. 1 shows a schematic configuration of a tank body 101 according to an embodiment of the “outer tank for septic tank” or “tank body” in the present invention. As shown in FIG. 1, the tank main body 101 of this embodiment is a tank-shaped body composed of a tank-shaped upper tank (also referred to as “upper tank”) 101a and a lower tank (also referred to as “lower tank”) 101b. It is an outer septic tank. In this case, the tank main body 101 is formed by abutting and joining the flange portion 104 and the flange portion 105 of the lower tank 101b to the upper tank 101a. The upper tank 101a is provided with an inflow pipe 102 through which treated water flows into the tank, and an outflow pipe 103 through which treated water flows out of the tank. In this tank body 101, a water treatment mechanism comprising a plurality of water treatment tanks is housed in an internal space defined by the upper tank 101a and the lower tank 101b, thereby constructing a water treatment apparatus having a desired water treatment capacity. Is done. In this case, the water treatment apparatus may be configured as a purification tank that discharges the water that flows out of the tank body 101 as it is, or the water that flows out of the tank body 101 is used for toilets or watering. You may comprise as a water reuse apparatus recycled as water.

  By the way, in this kind of water treatment apparatus, when the filling amount of the filler and the like is designed according to the treatment performance, a tank main body corresponding to a desired discharged water quality is generally used. For example, a water treatment device with a BOD (biochemical oxygen demand) of 20 mg / L or less as a effluent quality standard (hereinafter also referred to as “first type water treatment device”) and a effluent quality standard with a BOD of 10 mg / L Since the required water treatment performance differs with the water treatment device (hereinafter also referred to as “second type water treatment device”) having L or less, a filler is used depending on the required water treatment performance. In general, the septic tank outer tanks are manufactured separately.

  Therefore, the tank body 101 of the present embodiment is a single type of septic tank outer tank that can be used in common for at least any one of the first type water treatment device and the second type water treatment device. It is configured as (tank body). Hereinafter, a detailed configuration of the tank body 101 will be described.

  As shown in FIG. 1, the tank body 101 is configured such that a partition plate 106 is attached inside the tank. The partition plate 106 functions to partition the inside of the tank body 101 into a primary processing section 110 on the upstream side (inflow pipe 102 side) and a secondary processing section 140 on the downstream side (outflow pipe 103 side). The flowing water path including the advection opening 106 a provided in the partition plate 106 is configured as a flowing water path through which water treated by the primary processing unit 110 flows to the secondary processing unit 140. The flowing water path here is a flowing water path through which water treated by the primary processing unit 110 flows to the secondary processing unit 140, and this flowing water path constitutes the “flowing water path” in the present invention.

  The primary processing unit 110 is a processing unit that mainly performs anaerobic processing of water to be treated. As a processing tank constituting the primary processing unit 110, a contaminant removal processing tank that typically performs a function of removing contaminants, and an anaerobic filler for performing anaerobic treatment of organic pollutants in the water to be treated are filled. An anaerobic treatment tank is used. The primary processing unit 110 referred to here constitutes a “primary processing unit that performs anaerobic treatment of water to be treated” in the present invention.

  On the other hand, the secondary processing unit 140 is a processing unit that mainly performs aerobic processing of water to be treated. As the treatment tank constituting the secondary treatment unit 140, typically, an aerobic treatment tank filled with an aerobic treatment filler for aerobic treatment of organic pollutants in the treated water, organic in the treated water Contact aeration tank for aerobic treatment of pollutants, solid-liquid separation tank for solid-liquid separation of treated water by precipitation or filtration, treatment for storing treated water, treatment for disinfecting treated water, etc. Used. The secondary processing unit 140 referred to here constitutes a “secondary processing unit that performs aerobic treatment of water to be treated” in the present invention.

  Each of the primary processing unit 110 and the secondary processing unit 140 is partitioned into a plurality of processing tanks (also referred to as “processing regions”) by further attaching another interior member inside the tank body 101. With respect to the primary processing unit 110, the partition plate 111 is attached to the inside of the tank body 101 in the region closer to the inflow pipe 102 than the partition plate 106, whereby the primary processing unit 110 performs the first processing on the upstream side. It is divided into a tank 120 and a second processing tank 130 on the downstream side. The flowing water path including the advection opening 111 a provided in the partition plate 111 is configured as a flowing water path through which water treated in the first treatment tank 120 flows to the second treatment tank 130.

  Similarly, with respect to the secondary processing unit 140, the partition plates 151 and 161 are attached to the region inside the tank body 101 closer to the outflow pipe 103 than the partition plate 106, so that the secondary processing unit 140 is upstream. It is divided into a third processing tank 150 on the side, a fifth processing tank 170 on the downstream side, and a fourth processing tank 160 between the third processing tank 150 and the fifth processing tank 170. The flowing water path including the advection opening 151 a provided in the cut plate 151 is configured as a flowing water path in which water treated in the third treatment tank 150 flows to the fourth treatment tank 160, and is provided in the cut plate 161. The flowing water path including the advection opening 161 a is configured as a flowing water path through which water treated in the fourth treatment tank 160 flows to the fifth treatment tank 170.

  In the second treatment tank 130, a partition plate 131 is further interposed between the partition plate 111 and the partition plate 106, and the space between the partition plate 111 and the partition plate 131 is filled with the anaerobic treatment filler. It is configured as a filling region 132. The upper portion of the filling region 132 is partitioned by a porous upper partition member 133 that restricts the flow of the anaerobic treatment filler and allows the flow of water, and the lower portion of the filling region 132 is filled with the anaerobic treatment. It is partitioned by a porous lower partition member 134 that restricts the flow of the material and allows the flow of water. In this case, the upper partition member 133 and the lower partition member 134 are typically configured as porous partition members having a large number of holes made of a net, a mesh, a punching plate, or the like. The filling area | region 132 here comprises the "1st filling area | region filled with the filler for anaerobic processing" in this invention. Further, the upper partition member 133 that partitions the upper portion of the filling region 132 corresponds to the “upper partition member” in the present invention, and the lower partition member 134 that partitions the lower portion of the filling region 132 is the “lower partition member” in the present invention. Corresponds to “member”.

  In the present embodiment, the upper holding element 135 and the upper holding element 136 that can hold the upper partition member 133 are provided on the partition plate 111 and the partition plate 131. In the upper holding element 135 and the upper holding element 136, the upper holding element 135 is disposed above the upper holding element 136 in the tank vertical direction of the tank body 101. That is, the upper partition member 133 can be held by the upper holding element 135, or can be held by the upper holding element 136, and is held by the upper holding element 135 rather than being held by the upper holding element 136. The direction of the state made is set at a high place in the tank vertical direction of the tank body 101. On the other hand, a lower holding element 137 capable of holding the lower partition member 134 is provided on the partition plate 111 and the partition plate 131. The lower holding element 137 is disposed at a lower position than the upper holding element 136 in the tank vertical direction of the tank body 101. The upper holding elements 135 and 136 here correspond to the “upper holding element” in the present invention, and the lower holding element 137 here corresponds to the “lower holding element” in the present invention.

According to such a configuration, in the state where the upper partition member 133 is held by the upper holding element 135, the capacity of the filling region 132 is increased compared to the state where the upper partition member 133 is held by the upper holding element 136. The amount of the anaerobic filler that can be filled in the filling region 132 can be increased. Therefore, the capacity of the filling region 132 can be adjusted by appropriately selecting the position of the upper holding element held by the upper partition member 133 between the upper holding element 135 and the upper holding element 136. The upper partition member 133 and the upper holding elements 135 and 136 here constitute a “capacity variable mechanism” in the present invention .

  With regard to this configuration, three or more upper holding elements for the upper partition member 133 are arranged at different heights in the tank vertical direction of the tank body 101, or the lower holding elements for the lower holding element 137 are tanks of the tank body 101. Two or more can be arranged at different heights in the vertical direction. Moreover, in this Embodiment, in order to obtain the desired water treatment performance in the primary treatment part 110, the filling ratio of the anaerobic treatment filler occupying the effective capacity for water treatment of the primary treatment part 110 is 10 to 60. It is preferable that the upper holding elements 135 and 136 and the lower holding element 137 are arranged so as to be variable within a range of%. Regarding the “effective capacity for water treatment of the primary treatment unit 110” here, the volume of the entire space of the primary treatment unit 110 that is substantially effective for water treatment, that is, actually treated during normal use. The volume in which water is stored corresponds to the effective capacity here.

  Similar to the second treatment tank 130, in the third treatment tank 150, the space between the partition plate 106 and the partition plate 105 is configured as a filling region 152 filled with the aerobic treatment filler. . The upper portion of the filling region 152 is partitioned by a porous upper partition member 153 that restricts the flow of the aerobic treatment filler and allows the flow of water, and the lower portion of the filling region 152 is used for the anaerobic treatment. It is partitioned by a porous lower partition member 154 that regulates the flow of the filler and allows the flow of water. In this case, the upper partition member 153 and the lower partition member 154 are typically configured as porous partition members having a large number of holes such as nets, meshes, punching plates, and the like. The filling region 152 here constitutes the “second filling region filled with the aerobic treatment filler” in the present invention.

  In the present embodiment, an upper holding element 155 and an upper holding element 156 that can hold the upper partition member 153 are provided on the partition plate 111 and the partition plate 151. In these upper holding element 155 and upper holding element 156, the upper holding element 155 is disposed above the upper holding element 156 in the tank vertical direction of the tank body 101. That is, the upper partition member 153 can be held by the upper holding element 155, or can be held by the upper holding element 156, and is held by the upper holding element 155 rather than being held by the upper holding element 156. The direction of the state made is set at a high place in the tank vertical direction of the tank body 101. On the other hand, a lower holding element 157 that can hold the lower partition member 154 is provided on the partition plate 111 and the partition plate 151. The lower holding element 157 is disposed at a lower position than the upper holding element 156 in the tank vertical direction of the tank body 101.

  According to such a configuration, in the state where the upper partition member 153 is held by the upper holding element 155, the capacity of the filling region 152 is increased compared to the state where the upper partition member 153 is held by the upper holding element 156. It is possible to increase the amount of the aerobic treatment filler that can be filled in the filling region 152. Accordingly, the capacity of the filling region 152 can be adjusted by appropriately selecting the position of the upper holding element held by the upper partition member 153 between the upper holding element 155 and the upper holding element 156. With regard to this configuration, three or more upper holding elements for the upper partition member 153 are arranged at different heights in the tank vertical direction of the tank body 101, or the lower holding elements for the lower partition member 154 are tanks of the tank body 101. Two or more can be arranged at different heights in the vertical direction.

  With regard to this configuration, three or more upper holding elements for the upper partition member 153 are arranged at different heights in the tank vertical direction of the tank body 101, or the lower holding elements for the lower partition member 154 are tanks of the tank body 101. Two or more can be arranged at different heights in the vertical direction. Further, in the present embodiment, in order to obtain a desired water treatment performance in the secondary treatment unit 140, the filling ratio of the aerobic treatment filler in the effective capacity of the water treatment of the secondary treatment unit 140 is minimized. It is preferable that the upper holding elements 155 and 156 and the lower holding element 157 are arranged to be 45%.

  In addition, regarding the configurations of the upper holding elements 135, 136, 155, and 156 and the lower holding elements 137 and 157, various configurations that can hold the corresponding partition members can be employed. Specifically, a configuration using a support portion that supports the partition member from below, a configuration using a concave portion (opening, hole, groove, etc.) or a stepped portion engaged by a convex portion on the partition member side, and a concave portion on the partition member side The holding element is preferably configured by a configuration using engaging convex portions or stepped portions. In this case, the holding element may be configured by the inner wall surface of the tank body 101 (also referred to as “first holding structure”), or may be a partition plate or a baffle attached to the inner wall surface of the tank body 101. It may be configured by an interior member (also referred to as “second holding structure”), and further, a configuration combining the first holding structure and the second holding structure (also referred to as “third holding structure”), that is, It is also possible to employ a partition member holding structure by cooperation between the tank body 101 and the interior member.

When the first holding structure is adopted, a plurality of stepped portions constituting the holding element can be provided in the tank body 101 in the space partitioned by the partition plate in the space in the tank body 101, particularly preferably. The holding element can be configured by using a plurality of reinforcing ribs and corrugates of the tank body 101.
In the case where the third holding structure is adopted, a step portion constituting the holding element is provided in the tank body 101 in a space partitioned by the partition plate in the space in the tank body 101, and the holding element is configured in the partition plate. The step portion on the tank body 101 side and the step portion on the partition plate side can be configured such that the height in the tank vertical direction matches each other.

  As described above, the tank body 101 according to the present embodiment has a function of changing the capacity of the filling region 132 and the capacity of the filling region 152 by adjusting the relative position between the upper partition member and the lower partition member. From this, it is set as the single kind of tank main body which can be used also as an outer tank in any case of the above-mentioned 1st type water treatment apparatus and 2nd type water treatment apparatus. Hereinafter, the case where the tank main body 101 of this Embodiment is used for the 1st type water treatment apparatus 100 and the case where it is used for the 2nd type water treatment apparatus 200 are demonstrated, referring drawings.

  FIG. 2 shows a schematic configuration of a first type of water treatment apparatus 100 which is an embodiment of the “water treatment apparatus” of the present invention. This water treatment apparatus 100 shown in FIG. 2 is a water treatment tank comprising a first treatment tank 120, a second treatment tank 130, a third treatment tank 150, a fourth treatment tank 160, and a fifth treatment tank 170. Is configured to be accommodated in the tank body 101.

  In the water treatment apparatus 100, the first treatment tank 120 is configured as a contaminant removal treatment tank to which a baffle plate 121 that performs a function of removing impurities is attached. Moreover, the 2nd processing tank 130 is comprised as an anaerobic processing tank with which the filling area | region 132 was filled with the filler C1 for anaerobic processing. In the second treatment tank 130, the lower upper holding element 136 among the upper holding elements 135 and 136 is used for holding the upper partition member 133. As a result, the filling capacity of the filling region 132 is relatively smaller than when the upper holding element 135 on the upper side is used. Preferably, the upper holding element 136 is arranged so that the filling ratio of the anaerobic treatment filler C1 occupying the effective capacity for water treatment of the primary treatment unit 110 is set in the range of 10 to 30%. As the anaerobic treatment filler C1, typically, a filler composed of a cylindrical or spherical carrier, a plate-shaped regular filler, or the like is used.

  The third treatment tank 150 is configured as an aerobic treatment tank in which the filling region 152 is filled with the aerobic treatment filler C2. As the aerobic treatment filler C2, typically, a filler made of a cylindrical or spherical carrier, a plate-like regular filler, or the like is used. As a result, the filling capacity of the filling region 152 is relatively smaller than when the upper holding element 155 on the upper side is used. Below the filling area 152, an air diffuser 159 for diffusing the air supplied from the blower 158 is disposed in order to form an aerobic condition in the third treatment tank 150. As the aerobic treatment filler C2, a filler made of a cylindrical or spherical carrier is typically used.

  Moreover, the 4th processing tank 160 is comprised as a precipitation processing tank which performs solid-liquid separation by the precipitation process by retention of to-be-processed water. The fifth treatment tank 170 includes a medicine cylinder 171 provided on the partition plate 161, and the disinfectant filled in the medicine cylinder 171 is eluted into the water to be treated, so that the water to be treated is disinfected. Configured as a disinfection tank.

  FIG. 3 shows a schematic configuration of a second type of water treatment apparatus 200 which is an embodiment of the “water treatment apparatus” of the present invention. The water treatment apparatus 200 shown in FIG. 3 includes a first treatment tank 120, a second treatment tank 130, a third treatment tank 150, a fourth treatment tank 160, and a fifth treatment tank 170. Is configured to be accommodated in the tank body 101.

  In this water treatment apparatus 200, the first treatment tank 120 is configured as an anaerobic treatment tank in which the filling region 122 is filled with the same anaerobic treatment filler C1 as in the case of the water treatment apparatus 100. The second treatment tank 130 is configured as an anaerobic treatment tank in which the filling region 132 is filled with the same anaerobic treatment filler C1 as in the case of the water treatment apparatus 100. In the second treatment tank 130, the upper upper holding element 135 among the upper holding elements 135 and 136 is used for holding the upper partition member 133. As a result, the filling capacity of the filling region 132 is relatively larger than when the lower upper holding element 136 is used. Preferably, the filling ratio of the anaerobic treatment filler C1 occupying the effective capacity for water treatment of the primary treatment unit 110 is set in a range of 20 to 60%, or the filling ratio of the anaerobic treatment filler C1 is water treatment The upper holding element 135 is disposed so as to be set to 1.5 to 3.5 times that of the apparatus 100.

A flow rate adjusting device 138 is installed in a flowing water path through which water to be treated flows from the second processing tank 130 to the third processing tank 150, that is, a flowing water path including the advection opening 106 a provided in the partition plate 106. . The flow rate adjusting device 138 is a device that adjusts the flow rate of the water to be treated that flows from the second treatment tank 130 to the third treatment tank 150, and typically by a pump function using air supplied into the water flow pipe. It is constituted by an air lift pump that sucks and discharges the second treatment tank 130. The air lift pump can adjust the fluctuation range of the water level of the entire primary processing unit 110 between a high water level (HWL) and a low water level (LWL) corresponding to the installation height of the pump inlet. Use of this air lift pump is effective in improving the treatment performance of the water to be treated in the primary treatment unit 110 and the secondary treatment unit 140. Specifically, by suppressing the flow rate of the water flowing to the second treatment tank 130, the secondary treatment unit 140 improves the treatment performance related to organic matter removal performance and nitrification (oxidation of ammonia nitrogen) of the treated water. In the primary treatment unit 110, it is possible to increase the retention time of the water to be treated to improve the treatment performance regarding the solid-liquid separation and sludge storage of the water to be treated. At this time, the water level fluctuation range of the entire primary processing unit 110 is preferably set to 50 to 250 mm by the flow rate adjusting device 138.
In addition, as another structure of this flow control apparatus 138, the to-be-processed water of the 2nd processing tank 130 and the to-be-processed water returned to the 2nd processing tank 130 are returned to the 3rd processing tank 150 A device that distributes and adjusts to water can also be used.

  The third treatment tank 150 is configured as an aerobic treatment tank in which the filling region 152 is filled with the same aerobic treatment filler C2 as in the case of the water treatment apparatus 100. In the third treatment tank 150, the upper upper holding element 155 among the upper holding elements 155 and 156 is used for holding the upper partition member 153. As a result, the filling capacity of the filling region 152 is relatively larger than when the lower upper holding element 156 is used. Below the filling area 152, an air diffuser 159 for diffusing the air supplied from the blower 158 is disposed in order to form an aerobic condition in the third treatment tank 150. By using this air diffuser 159, it is effective to improve the treatment performance of the water to be treated in the secondary treatment unit 140. Specifically, by adjusting the amount of air diffused from the air diffuser 159, it becomes possible to improve the removal performance of organic matter in the water to be treated and the nitrification performance.

  The fourth treatment tank 160 includes a filling region 162 filled with the filter medium C3, and is configured as a filtration tank that performs solid-liquid separation by filtration of water to be treated by the filter medium C3. As in the case of the water treatment apparatus 100, this filtration treatment tank may be configured as a precipitation treatment tank that performs solid-liquid separation by precipitation treatment due to retention of water to be treated. In such a case, the structure of the fourth treatment tank 160 is further simplified. Further, the fifth treatment tank 170 is provided with a medicine cylinder 171 similar to that in the case of the water treatment apparatus 100 on the partition plate 161, and the disinfectant filled in the medicine cylinder 171 is eluted into the water to be treated. It is configured as a disinfection tank that performs water disinfection treatment.

As described above, according to the present embodiment, the first type of water treatment apparatus 100 whose BOD is 20 mg / L or less as the discharge water quality standard, and the second type whose BOD is 10 mg / L or less as the discharge water quality standard. Any tank body of the water treatment apparatus 200 can be configured by a single type of tank body 101. For example, the tank main body 101 of this embodiment can be used for the tank main body of the first type water treatment apparatus 100 for five-person tanks and the second type water treatment apparatus 200 for five-person tanks.
At this time, the water treatment performance required for each water treatment device of the first type water treatment device 100 and the second type water treatment device 200 is equal to the filling capacity of the filling region 132 in the second treatment tank 130, and the second water treatment device 200. The filling capacity of the filling region 152 in each of the three treatment tanks 150 is set by adjusting according to the water treatment device to be used.

  Specifically, with respect to the tank body 101 of the first type of water treatment apparatus 100, the upper partition member 133 that partitions the upper portion of the filling region 132 of the second treatment tank 130 is held by the lower upper holding element 136. By doing so, the filling capacity of the filling region 132 is relatively reduced to suppress the processing performance, and the upper partition member 153 that partitions the upper portion of the filling region 152 of the third treatment tank 150 is formed by the lower upper holding element 156. By holding, the filling capacity of the filling region 152 can be relatively reduced to suppress the processing performance.

  On the other hand, the tank body 101 of the second type water treatment apparatus 200 is filled by holding the upper partition member 133 that partitions the upper portion of the filling region 132 of the second treatment tank 130 by the upper holding element 135 on the upper side. By relatively increasing the filling capacity of the region 132 to improve the processing performance and holding the upper partition member 153 that partitions the upper portion of the filling region 152 of the third processing tank 150 by the upper holding element 155 on the upper side. Processing capacity can be improved by relatively increasing the filling capacity of the filling region 152.

  Therefore, according to the above-described embodiment, the tank body 101 can be shared with respect to a plurality of water treatment apparatuses having the same personnel to be treated and different effluent quality standards, thereby reducing the manufacturing cost of the tank body 101. Can be achieved. Here, “the same target personnel” means that the effective capacity, the total length, the total width, the total height, etc. for water treatment in the space portion in the tank body 101 are substantially the same.

[Other Embodiments]
In addition, this invention is not limited only to said embodiment, A various application and deformation | transformation can be considered. For example, each of the following embodiments to which the above embodiment is applied can be implemented.

  In the above embodiment, the holding positions of the upper partition members 133 and 153 can be changed at two locations in the tank vertical direction, and the holding positions of the lower partition members 134 and 154 are fixed at predetermined positions. The holding positions of the partition member and the lower partition member can be set to one or more in the tank vertical direction. At this time, the holding position of one of the upper partition member and the lower partition member may be changed, or the holding positions of both the upper partition member and the lower partition member may be changed. .

  In the present invention, a configuration is adopted in which the installation mode of the partition member is changed by moving the upper partition members 133 and 153 and the lower partition members 134 and 154 relative to each other automatically or manually to change their mounting positions. be able to. Further, when changing the mounting positions of the upper partition members 133 and 153 and the lower partition members 134 and 154, the partition members can be moved in an appropriate direction such as a tank vertical direction or a tank horizontal direction.

  In the above embodiment, the filling capacity of the filling region 132 and the filling region 152 can be adjusted in two patterns corresponding to the two types of the first type water treatment device 100 and the second type water treatment device 200, respectively. In the present invention, the filling capacity of the filling area 132 and the filling area 152 is adjusted to be adjusted in two or more patterns respectively corresponding to two or more types of water treatment apparatuses. Can do.

  Moreover, in the said embodiment, although the structure which changes the installation aspect of a division member by changing the attachment position by the relative movement of the upper division member and the lower division member in the tank main body 101 was described, in this invention, It is also possible to adopt a configuration in which the installation mode of the partition member is changed by switching between the attachment state and the removal state of the upper partition member and the lower partition member. In this case, in the water treatment apparatus 200 shown in FIG. 3, the upper partition member 133 of the second treatment tank 130 is held by the upper holding element 135, and the lower partition member 134 is held by the lower holding element 137. On the other hand, in the water treatment apparatus 100 shown in FIG. 2, the upper partition member 133 of the second treatment tank 130 is removed from the upper holding elements 135 and 136 and the lower partition member 134 is held lower. The detachment state (detachment state) removed from the element 137 is set. That is, in the water treatment apparatus 100, the water to be treated in the second treatment tank 130 is omitted by omitting the filling region 132 itself filled with the anaerobic treatment filler C1 (the filling capacity of the filling region 132 is zero). Is set relatively lower than in the case of the water treatment apparatus 200. Therefore, even with such a configuration, it is possible to change the treatment performance by relatively adjusting the filling capacity of the filling region 152, and, as in the above-described embodiment, the treatment target personnel are the same and the discharged water quality standard is the same. The tank body 101 can be shared with respect to different water treatment apparatuses.

It is a figure which shows schematic structure of the tank main body 101 of this Embodiment. It is a figure which shows schematic structure of the 1st type water treatment apparatus 100 which is one Embodiment of the "water treatment apparatus" of this invention. It is a figure which shows schematic structure of the 2nd type water treatment apparatus 200 which is one Embodiment of the "water treatment apparatus" of this invention.

DESCRIPTION OF SYMBOLS 100 ... Water treatment apparatus 101 ... Tank main body (outer tank for septic tanks)
DESCRIPTION OF SYMBOLS 101a ... Upper tank 101b ... Lower tank 102 ... Inflow pipe 103 ... Outflow pipe 104,105 ... Flange part 106 ... Partition plate 106a ... Advection opening 110 ... Primary processing part 111 ... Partition plate 111a ... Advection opening 120 ... First process Tank 130 ... Second treatment tank 131 ... Partition plate 132 ... Filling area 133 ... Upper partition member 134 ... Lower partition member 135, 136 ... Upper holding element 137 ... Lower holding element 138 ... Flow rate adjusting device 140 ... Secondary processing section 150 3rd processing tank 151 ... Partition plate 151a ... Advection opening 152 ... Filling region 153 ... Upper partition member 154 ... Lower partition member 155, 156 ... Upper holding element 157 ... Lower holding element 158 ... Blower 159 ... Air diffuser 160 ... Fourth treatment tank 161 ... Partition plate 161a ... Advection opening 170 ... Fifth treatment tank 171 ... Medicine bottle 1 ... anaerobic treatment for filler C2 ... aerobic treatment for filler C3 ... filter material

Claims (4)

It is a tank-shaped septic tank outer tank that houses a water treatment mechanism that performs water treatment of treated water,
As the water treatment mechanism, a treatment unit that performs anaerobic treatment or aerobic treatment of water to be treated, and a filling region filled with a filler for anaerobic treatment or aerobic treatment corresponding to the treatment unit in the treatment unit ; , before KiTakashi Hama prior SL with partitioning and regulates the flow of pre KiTakashi Hamazai and porous upper partition member that allows the flow of water, the lower portion of the front KiTakashi Hama region while partitioning the upper region a lower partition member porous shaped to permit flow regulation by and water distribution of charge Hamazai, is that there can accommodate,
Following a change in the installation mode of at least one of the partition member of the upper partition member and the lower partition member comprises a variable displacement mechanism for the capacity before KiTakashi Hama region is variable,
The variable capacity mechanism includes an upper holding element that holds the upper partition member and a lower holding element that holds the lower partition member on at least one of a partition plate that partitions the inner wall of the septic tank outer tank and the filling region. In addition, at least one of the upper holding element and the lower holding element is provided with a plurality of holding elements at different heights in the tank vertical direction, whereby the upper partition member and the lower partition member are formed by the plurality of holding elements. The capacity | capacitance of the said filling area | region is made variable by adjusting the at least one partition member of this to the holding position of the different height of a tank up-down direction, The outer tank for septic tanks characterized by the above-mentioned . It is a tank-shaped septic tank outer tank that houses a water treatment mechanism that performs water treatment of treated water,
As the water treatment mechanism, a first treatment unit that performs anaerobic treatment of treated water, a second treatment unit that performs aerobic treatment of treated water, and water treated by the first treatment unit is the second treatment. A flowing water flow path to a section, a filling area filled with a filler for anaerobic treatment or aerobic treatment corresponding to the treatment section in the first or second treatment section, and an upper portion of the filling area And a porous upper partition member that restricts the flow of the filler and allows the flow of water, and a porous shape that partitions the lower part of the filling region and restricts the flow of the filler and allows the flow of water. A lower partition member, and can be accommodated,
In accordance with a change in the installation mode of at least one partition member of the upper partition member and the lower partition member, a capacity variable mechanism that makes the capacity of the filling region variable,
The variable capacity mechanism includes an upper holding element that holds the upper partition member and a lower holding element that holds the lower partition member on at least one of a partition plate that partitions the inner wall of the septic tank outer tank and the filling region. In addition, at least one of the upper holding element and the lower holding element is provided with a plurality of holding elements at different heights in the tank vertical direction, whereby the upper partition member and the lower partition member are formed by the plurality of holding elements. The capacity | capacitance of the said filling area | region is made variable by adjusting the at least one partition member of this to the holding position of the different height of a tank up-down direction, The outer tank for septic tanks characterized by the above-mentioned. It is the outer tank for septic tanks of Claim 1 or 2 ,
The upper partition member and the lower partition member are configured to partition a filling region filled with a filler for anaerobic treatment,
The capacity variable mechanism is for anaerobic treatment that occupies an effective capacity for water treatment of a treatment unit that performs anaerobic treatment of water to be treated in accordance with position adjustment of at least one of the upper compartment member and the lower compartment member. An outer tank for a septic tank, wherein the upper holding element and the lower holding element are arranged so that the filling ratio of the filler is variable in a range of 10 to 60%. A water treatment apparatus in which a water treatment mechanism for treating water to be treated is contained in a tank body,
The water treatment mechanism is
A primary treatment unit that performs anaerobic treatment of water to be treated;
A first filling region filled with anaerobic filler in the primary treatment unit;
A secondary treatment unit that performs aerobic treatment of water to be treated;
A second filling region filled with an aerobic treatment filler in the secondary processing unit;
A flowing water path through which water treated in the primary treatment unit flows to the secondary treatment unit;
A porous upper partition member that partitions the upper portion of the first or second filling region and restricts the flow of the anaerobic or aerobic treatment filler corresponding to the filling region and allows the flow of water; ,
The lower partition of the first or second filling region where the upper partition member is arranged is partitioned , the flow of the anaerobic treatment or aerobic treatment filler corresponding to the filling region is restricted, and the flow of water is allowed A porous lower partition member that
Including
The tank body, the water treatment apparatus which is a structure consisting of septic tank for outer tub according to any one of claims 1 3.

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