JP5022975B2 - Air supply piping for water treatment equipment, water treatment equipment - Google Patents

Description

  The present invention relates to a water treatment technique, and more particularly, to a construction technique of a water treatment apparatus that houses a purification treatment section of water to be treated in a tank body.

Conventionally, various techniques for treating treated water such as domestic wastewater discharged from ordinary households and sewage such as industrial wastewater have been proposed. For example, Patent Document 1 below discloses a sewage treatment apparatus having a plurality of air treatment regions in which treated water is treated with supply air supplied from a blower. In this sewage treatment apparatus, there is a possibility of supplying air appropriately to a plurality of air treatment regions having different water level differences by using an air supply pipe with an orifice that restricts the flow path in the pipe. In designing the supply piping, a technique for further improving workability such as cleaning and maintenance of the orifice is required.
JP 2001-300566 A

  Then, this invention is made | formed in view of this point, and relates to the air supply piping built in the water treatment apparatus which accommodates the purification process part of to-be-processed water in a tank main body, The pipe | tube flow path of the said air supply piping is provided. It is an object of the present invention to provide a technique effective for improving workability such as cleaning and maintenance of the orifice to be squeezed.

  The present invention is configured to solve the above problems. In addition, this invention is used suitably as construction technology of the water treatment apparatus which processes various to-be-processed waters, such as domestic waste water discharged | emitted from a general household etc., kitchen waste_water | drain, industrial wastewater.

  An air supply pipe for a water treatment apparatus according to the present invention is an air supply pipe installed in a water treatment apparatus that houses a purification treatment section of water to be treated in a tank body, and includes at least an air supply pipe section. This air supply piping part is comprised as a piping part which connects between the air supply source which supplies air, and the several air treatment area | region where to-be-processed water is processed with supply air in parallel. Regarding the treatment of the water to be treated in the air treatment region here, the treatment performed by the supply air is widely included, and as the treatment, the treatment is performed by diffusing the supply air to the water to be treated, by an air lift or the like. Examples include transfer processing of water to be treated. The “air supply source” mentioned here typically includes a blower or a pump that discharges air at a high pressure. Further, the “parallel connection” referred to here is configured such that the supply air from the air supply source branches and flows into a plurality of air treatment regions.

The air supply piping section further includes an upstream piping section, a downstream piping section, a detachable joint, and an orifice. The upstream piping portion is configured as a piping portion connected to the downstream side of the air supply source. A downstream piping part is arrange | positioned in the downstream of an upstream piping part, and is comprised as a piping part which has the discharge port of the air which goes to an air treatment area | region. The attachment / detachment joint is configured as an attachment / detachment member that removably connects the upstream piping portion to the downstream piping portion. As this detachable joint, unions having a screw engagement structure can be typically used. The orifice is configured as a throttle opening portion that is provided in the upstream pipe section and throttles the flow path in the pipe of the upstream pipe section. The term “orifice” as used herein is intended to broadly include those having a restricting function for restricting the flow path in the pipe, and typically an orifice plate in which restrictive holes having a constant opening area are formed in a plate-like member. In addition, an adjustment air valve that can adjust the flow rate of the supply air by changing the opening area by the throttle operation of the flow path in the pipe by the valve body is included in the category of the orifice here.
Furthermore, the upstream piping section includes a common piping section and a branch piping section that is branched from the common piping section and disposed on the downstream side of the upstream piping section, and the common piping section and the branch piping section are integrated. The common pipe portion is configured to be detachably connected to the downstream side of the air supply source via the second detachable joint.

  In such a configuration, the orifice provided in the upstream piping part can be detached from the downstream piping part via the detachable joint. Therefore, according to such a configuration of the air supply pipe for a water treatment apparatus according to the present invention, by removing the detachable joint, the upstream pipe part is separated from the downstream pipe part together with the orifice, and the orifice is cleaned or maintained. It can be easily performed. On the other hand, in the configuration in which the downstream piping portion is attached and fixed to the attached member such as a bracket built in the tank body, when an orifice is provided in the downstream piping portion, not only the upstream piping portion but also the downstream piping portion. There is a concern that workability may be lowered because it is necessary to remove the orifice from the tank main body or to perform operations such as cleaning and maintenance of the orifice while the downstream pipe portion is attached to the attached member and fixed.

Further, in such a configuration, the upstream piping portion can be detached from the downstream piping portion and the air supply source side via the detachable joint and the second detachable joint. Therefore, according to such a configuration, by removing both the detachable joint and the second detachable joint, it is possible to separate the upstream piping part from the downstream piping part together with the orifice, and further to disconnect from the air supply source side. Therefore, an air supply pipe for a water treatment apparatus is provided that can more easily perform cleaning and maintenance of the orifice.

In a further form of the water supply pipe for a water treatment device according to the present invention, the air supply pipe for the water treatment device is provided in a region around the manhole opening disposed above the tank body in an interior state with respect to the water treatment device. It is preferable that the common pipe part and the branch pipe part are arranged. This manhole opening is configured as an opening used for in-tank inspection, in-tank cleaning, or in-tank repair. Therefore, the “peripheral region of the manhole opening” here is defined as the vicinity of the manhole opening that can be reached by the operator through the manhole opening from the outside of the tank body.
According to such a configuration, it is possible to easily perform the operation of removing the detachable joint and the second detachable joint and detaching the upstream piping portion from the downstream piping portion and the air supply source side through the manhole opening. In addition, since all orifices can be clogged or blocked at once through the manhole opening, it is effective for shortening the maintenance work time. Furthermore, the operation of pulling the upstream piping part out of the tank body can be easily performed through the manhole opening.

A water treatment apparatus according to the present invention is a water treatment apparatus that accommodates a purification treatment section of water to be treated in a tank body, and among the purification treatment sections, a plurality of air treatment regions in which the treatment water is treated by supply air, An air supply source that supplies air and an air supply pipe that connects the air supply source and the plurality of air treatment regions in parallel are provided. In particular, the air supply piping further includes an upstream piping portion, a downstream piping portion, a detachable joint, and an orifice.
Furthermore, the upstream piping section includes a common piping section and a branch piping section that is branched from the common piping section and disposed on the downstream side of the upstream piping section, and the common piping section and the branch piping section are integrated. The common pipe portion is configured to be detachably connected to the downstream side of the air supply source via the second detachable joint.
In such a configuration, the orifice provided in the upstream piping part can be detached from the downstream piping part via the detachable joint. Therefore, according to such a configuration of the water treatment apparatus according to the present invention, as described above, by removing the detachable joint in the air supply pipe, the upstream pipe part is separated from the downstream pipe part together with the orifice, Cleaning, maintenance, etc. can be easily performed.

Further, in such a configuration, the upstream piping portion can be detached from the downstream piping portion and the air supply source side via the detachable joint and the second detachable joint. Therefore, according to such a configuration, as described above, by removing both the detachable joint and the second detachable joint, the upstream piping part is separated from the downstream piping part together with the orifice, and also from the air supply source side. Since it becomes possible to separate, the water treatment apparatus with which the air supply piping which can perform cleaning, maintenance, etc. of an orifice more easily was equipped is provided.

  In a further embodiment of the water treatment apparatus according to the present invention, the water treatment apparatus has a manhole opening disposed above the tank body, and a common pipe section and a branch pipe section are arranged in the peripheral area of the manhole opening. It is preferable that the configuration is provided. According to such a configuration, as described above, the operation of removing the detachable joint and the second detachable joint and detaching the upstream piping portion from the downstream piping portion and the air supply source side can be easily performed through the manhole opening. It becomes possible. In addition, since all orifices can be clogged or blocked at once through the manhole opening, it is effective for shortening the maintenance work time. Furthermore, the operation of pulling the upstream piping part out of the tank body can be easily performed through the manhole opening.

  As described above, according to the present invention, the structure of the air supply pipe installed in the water treatment apparatus that houses the purification treatment unit of the water to be treated in the tank body, particularly, the air supply source and the plurality of air treatment regions. An orifice that restricts the flow path in the pipe is provided in the upstream pipe part of the air supply pipe that is connected in parallel, and the upstream pipe part having the orifice can be detached from the downstream pipe part through a detachable joint, thereby reducing the orifice. It became possible to improve workability such as cleaning and maintenance.

  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 or sewage discharged | emitted from a general household.

  A schematic configuration of a water treatment apparatus 100 according to an embodiment of the “water treatment apparatus” in the present invention is shown in FIG. 1. As shown in FIG. 1, a water treatment apparatus (also referred to as “purification tank”) 100 according to the present embodiment accommodates various purification treatment units or purification treatment mechanisms inside a tank body 101. The tank main body 101 includes an inflow pipe 102 and an outflow pipe 103, and the water to be treated that has flowed into the tank of the tank main body 101 through the inflow pipe 102 is continuously purified by a purification processing unit described later. It is discharged out of the tank body 101 through the outflow pipe 103. In addition, a manhole opening 104 used for in-tank inspection, in-tank cleaning, or in-tank repair is provided at the top of the tank body 101, and this manhole opening 104 is normally closed by a manhole cover (not shown). Can be removed. In the present embodiment, various interior members are locally or intensively arranged in the peripheral region of the manhole opening 104.

  In the tank body 101, the first anaerobic filter bed tank 110, the second anaerobic filter bed tank 130, the carrier fluidized biological filtration tank from the upstream (left side in FIG. 1) corresponding to the order of the processing steps as the purification processing section. 150, the treated water tank 180, and the disinfection tank 190 are accommodated. The tank main body 101 here corresponds to the “tank main body” in the present invention, and the first anaerobic filter bed tank 110, the second anaerobic filter bed tank 130, and the carrier fluid biological filtration tank 150 accommodated in the tank main body 101. The treatment water tank 180 and the disinfection tank 190 constitute a “purification treatment unit” in the present invention.

  Filter beds 112 and 132 are formed in the anaerobic filter bed tanks 110 and 130, respectively, and a predetermined amount of filter medium to which anaerobic microorganisms for anaerobically decomposing organic pollutants in the water to be treated adhere to these filter beds 112 and 132. C1 and C2 are filled. In the present embodiment, the water to be treated flows down the filter beds 112 and 132 downward in the direction of the arrow in FIG. 1 so that the organic pollutants in the water to be treated are anaerobically decomposed. . The water treated in the first anaerobic filter bed tank 110 is configured to be transferred to the second anaerobic filter bed tank 130 through the opening 114 formed in the upper part of the partition wall by the so-called push flow principle. Similarly, the water treated in the second anaerobic filter bed tank 130 is transferred to the carrier fluid biological filtration tank 150 by the principle of the extrusion flow through the opening 134 formed in the upper part of the partition wall.

  A carrier filling region 152 is formed in the carrier fluidized biological filtration tank 150, and a predetermined amount of carrier 170 to which aerobic microorganisms for aerobically decomposing (aerobic treatment) of organic pollutants adhere to the carrier filling region 152. However, it is filled to such an extent that it can flow in the tank. Typically, the carrier 170 is a carrier formed in a granular hollow cylindrical shape. An upper carrier movement preventing member 154 and a lower carrier movement preventing member 156 that define the carrier filling region 152 are provided above and below the flow region in which the carrier 170 can flow. These upper carrier movement preventing member 154 and lower carrier movement preventing member 156 are perforated plates (also referred to as “punching plates”) in which a large number of holes that allow the water to be treated to pass but prevent the carrier 170 from passing are formed. ).

  The carrier fluid biological filtration tank 150 is provided with an air diffuser 160 in the carrier filling region 152, and a backwash device 162 is provided below the carrier filling region 152, that is, below the air diffuser 160. Is provided.

  The air diffuser 160 is connected to an air supply pipe 210 connected to a discharge part of a blower (also referred to as a “blower” or “pump”) 200 that discharges air at a high pressure, and in a carrier filling region It has the structure which supplies the air used for an aerobic process to the support | carrier 170 of 152. Specifically, the air diffuser 160 is configured such that a plurality of air supply holes are provided in a piping member (air diffuser pipe). In such a configuration, when a predetermined amount of air is supplied from the air diffuser 160 through the air supply pipe 210 during the air diffuser operation, an aerobic treatment region is formed above the air diffuser 160, and the air diffuser 160. The filtration process area | region is formed below rather than.

  On the other hand, the backwashing device 162 is connected to the air supply pipe 220 connected to the discharge unit of the blower 200, and supplies air used when backwashing the carrier 170 in the carrier filling region 152 in the backwashing operation. It has the composition to do. The backwashing device 162 is specifically configured such that a plurality of air supply holes are provided in a piping member (backwashing tube). In such a configuration, when a predetermined amount of air is supplied from the backwashing device 162 through the air supply pipe 220 during the backwashing operation, the entire carrier 170 in the carrier filling region 152 is fluidized, and the object to be filtered is removed during the aeration operation. The filtered carrier 170 is washed. Note that the amount of air supplied from the backwash device 162 is typically set to be larger than the amount of air supplied from the air diffuser 160 during normal operation.

  Water that has undergone aerobic decomposition (aerobic treatment) in the carrier fluid biological filtration tank 150 is temporarily stored in the treated water tank 180. The treated water tank 180 is provided with a first air lift 164 and a second air lift 166 having an air lift type fluid transfer structure (pump structure) that sucks and discharges fluid by the action of supply air flowing into the casing. . The first air lift 164 and the second air lift 166 are also referred to as air lift pumps.

  The first air lift 164 has a suction portion that extends from the treated water tank 180 side to the carrier fluid biological filtration tank 150 side and is disposed at the bottom of the carrier fluid biological filtration tank 150, and a discharge portion that is a first anaerobic filter bed tank. The air supply pipe 220 connected to the discharge part of the blower 200 is connected to the first air lift 164. In such a configuration, when a predetermined amount of air is supplied to the first air lift 164 through the air supply pipe 220 during the backwash operation, the backwash water extracted from the bottom of the carrier fluid biological filtration tank 150 is as shown in FIG. As indicated by B in the figure, it is transferred to the first anaerobic filter bed tank 110.

  On the other hand, the second air lift 166 has its suction part disposed at the bottom of the treated water tank 180 and its discharge part disposed in the first anaerobic filter bed tank 110, and the second air lift 166 has a discharge of the blower 200. An air supply pipe 210 connected to the section is connected. In such a configuration, when a predetermined amount of air is supplied to the second air lift 166 through the air supply pipe 210 during the aeration operation, the water extracted from the bottom of the treated water tank 180 is indicated by A in FIG. Such circulating water is transferred to the first anaerobic filter bed tank 110.

  The water stored in the treatment water tank 180 is transferred to the disinfection tank 190. If necessary, a metering device (not shown) that can adjust the flow rate of the water to be treated to be transferred to the sterilization tank 190 may be provided between the treatment water tank 180 and the sterilization tank 190. The disinfecting tank 190 includes a medicine cylinder 192 filled with a disinfectant, and the water before being discharged out of the tank body 101 is disinfected by the disinfectant component eluted from the medicine cylinder 192. Yes.

  Here, a further specific configuration of the air supply pipe 210 will be described with reference to FIG. FIG. 2 shows a plan view of the air supply pipe 210 in FIG. 1 as viewed from above (manhole opening 104 side of the tank body 101). The air supply pipe 210 here corresponds to the “air supply pipe for water treatment apparatus” and the “air supply pipe” in the present invention.

  As shown in FIG. 2, the air supply pipe 210 of the present embodiment is a pipe disposed on the downstream side of the blower discharge pipe 201 for air discharge extending downstream of the blower 200. The blower 200 and the blower discharge pipe 201 referred to here constitute an “air supply source for supplying air” in the present invention. The air supply pipe 210 is detachably connected to the blower discharge pipe 201 via a detachable joint 202 provided on the blower discharge pipe 201 side. The detachable joint 202 here corresponds to the “second detachable joint” in the present invention.

  The air supply pipe 210 is divided into an upstream pipe section 211 extending on a horizontal plane having a predetermined height, and downstream pipe sections 213, 215, and 217 extending in a longitudinal direction from the upstream pipe section 211. Is done. The upstream piping section 211 includes a common piping section 211a and branch piping sections 211b, 211c, and 211d branched from the common piping section 211a. The common piping portion 211a and the branch piping portions 211b, 211c, and 211d are each configured to accommodate an orifice plate 230 as a throttle opening portion that restricts the flow path in the tube. The orifice plate 230 is configured as an orifice plate in which a throttle hole having a constant opening area is formed in a plate-like member. The branch piping part 211b is configured to be detachably connected to the downstream piping part 213 via an attachment / detachment joint 203 provided on the downstream piping part 213 side. Similarly, the branch pipe part 211c is configured to be detachably connected to the downstream pipe part 215 via a detachable joint 204 provided on the downstream pipe part 215 side, and the branch pipe part 211d is connected to the downstream pipe part 217. It is configured to be detachably connected to the downstream piping part 217 via a detachable joint 205 provided on the side. The attachment / detachment joints 203, 204, and 205 here correspond to the “attachment / detachment joint” in the present invention. As these detachable joints 203, 204, 205 and the aforementioned detachable joint 202, typically, unions having a screw engagement structure can be used. As the unions, for example, a single union, a free union, an elbow union, a cheese union, a union with a screw, and a union with an air valve in which an air valve is mounted on each union can be suitably used.

  On the other hand, each of the downstream piping sections 213, 215, and 217 is assigned to each air treatment area of the air diffuser 160, the second air lift 166, and the metering adjustment device (not shown), and discharges air toward the air treatment area. It is set as the structure which has an exit. Accordingly, the diffuser 160, the second air lift 166, and the metering device constitute “a plurality of air treatment regions where treated water is treated by the supply air” in the present invention. In the present embodiment, the blower 200 and the plurality of air treatment regions are connected in parallel by the air supply pipe 210. The “parallel connection” here is configured such that the supply air from the blower 200 branches and flows into a plurality of air treatment regions. Further, the downstream piping portions 213, 215, and 217 are configured to be attached and fixed to a member to be attached (not shown) such as a bracket built in the tank body 101. In such a configuration, the orifice plate 230 provided in each of the common pipe portion 211a and the branch pipe portions 211b, 211c, and 211d allows the air diffuser 160, the second air lift 166, and the air conditioning regions of the metering device to be connected. Even when the water level difference occurs, it is possible to appropriately distribute the supply air. On the other hand, since the orifice plate 230 is configured to restrict the flow path in the pipe, the orifice plate 230 is likely to be clogged or clogged with solid matter in the water to be treated, and requires regular maintenance and cleaning work.

  Therefore, according to the above-described configuration of the air supply pipe 210 of the present embodiment, the upstream pipe section 211 removes the detachable joints 202 to 205, so that the region C shown in FIG. 2 becomes the downstream pipe sections 213, 215, 217. And detachable from the blower discharge pipe 201. Therefore, it is not necessary to cut the air supply pipe 210 or replace it with the air diffuser 160, the second air lift 166, etc., and the upstream pipe section 211 can be easily removed in a short time. In particular, work can be facilitated by arranging the detachable joints 202 to 205 around the single upstream piping section 211. Further, by detaching the upstream pipe portion 211 provided with all the orifice plates 230, maintenance and cleaning work for each orifice plate 230 can be performed at once. The orifice plate 230 here corresponds to an “orifice” in the present invention. On the other hand, in the configuration in which the downstream pipe portions 213, 215, and 217 are attached and fixed to a member to be attached such as a bracket built in the tank body 101, an orifice plate 230 is provided in the downstream pipe portions 213, 215, and 217. In this case, not only the upstream piping part 211 but also the downstream piping parts 213, 215, and 217 are removed from the tank body 101, or the downstream piping parts 213, 215, and 217 are attached to the attached members and the orifice plate 230 is cleaned while being fixed. Therefore, there is a concern that workability will be reduced.

  In particular, in the peripheral area of the manhole opening 104, that is, in the vicinity of the manhole opening 104 where the worker's hand reaches from the outside of the tank body 101 through the manhole opening 104, the upstream pipe section 211 (the common pipe section 211a and the branch pipe sections 211b, 211c, 211d) is preferably provided. The manhole opening 104 here corresponds to the “manhole opening” in the present invention, and by the upstream pipe portion 211 (the common pipe portion 211a and the branch pipe portions 211b, 211c, 211d) disposed in the vicinity of the manhole opening 104. The common pipe part and the branch pipe part in the present invention are configured.

  According to such a configuration, it is possible to easily perform the operation of removing the detachable joints 202 to 205 and detaching the upstream piping portion 211 from the downstream piping portions 213, 215, 217 and the blower discharge piping 201 through the manhole opening 104. It becomes. In addition, since all the orifice plates 230 can be clogged or closed at once through the manhole opening 104, it is effective in shortening the maintenance work time. Furthermore, the operation of pulling the upstream piping part 211 out of the tank body 101 can be easily performed through the manhole opening 104.

  The characteristic part of the air supply pipe 210 as described above can be applied not only to the air supply pipe 210 but also to the configuration of the air supply pipe 220.

[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 air supply pipe 210 of the above-described embodiment, the case where the attachment / detachment joints 202 to 205 are provided on the downstream pipe portions 213, 215, 217 side and the blower discharge pipe 201 side has been described. A joint can also be provided. Refer to FIG. 3 for this modification. FIG. 3 shows a plan view of an air supply pipe 310 according to another embodiment as viewed from above (manhole opening 104 side of the tank body 101). In FIG. 3, the same components as those shown in FIG. 2 are denoted by the same reference numerals, and the description of the same components is omitted. In the air supply pipe 310 shown in FIG. 3, each of the common pipe section 211a and the branch pipe sections 211b, 211c, and 211d accommodates the orifice plate 230 that restricts the flow path in the pipe, and further includes the detachable joints 202 to 205, respectively. It is set as the structure provided. According to such a configuration, a rational structure in which a plurality of attachment / detachment joints 202 to 205 are integrated in a single air supply pipe 310 is realized.

  Further, in the air supply pipes 210 and 310 of the above-described embodiment, the configuration in which the orifice plate 230 is provided at all four locations of the common pipe portion 211a and the branch pipe portions 211b, 211c, and 211d has been described. A configuration in which the orifice plate 230 is provided in at least one of the four locations of the common piping portion 211a and the branch piping portions 211b, 211c, and 211d is adopted according to the usage of the supply piping and the water level of the air supply destination. be able to.

  In the above embodiment, the case where the orifice plate 230 is used as a member for restricting the flow path in the air supply pipes 210 and 310 has been described. However, in the present invention, instead of or in addition to the orifice plate 230, the flow in the pipe It is also possible to provide the air supply pipes 210 and 310 with another member having a throttle function for narrowing the path. As the another member, for example, an adjustment air valve that can change the opening area and adjust the flow rate of the supply air by the throttle operation of the flow path in the pipe by the valve body can be adopted. FIG. 4 is referred to for a specific configuration when the adjustment air valve is employed.

  FIG. 4 is a plan view of the air supply pipe 410 according to another embodiment as viewed from above (manhole opening 104 side of the tank body 101). In FIG. 4, the same components as those shown in FIG. 2 are denoted by the same reference numerals, and the description of the same components is omitted. In the air supply pipe 410 shown in FIG. 4, an adjustment air valve 430 is installed instead of the orifice plate 230 of the branch pipe section 211b. When the adjustment lever 431 is operated, the adjustment air valve 430 has an opening area that is variable by a throttle operation or a throttle release operation of the pipe flow path by the valve body, and the flow rate of the air flowing to the downstream pipe portion 213 is adjusted. The Even with such a configuration, at least the same operational effects as when the orifice plate 230 is used are produced. In this air supply pipe 410, the orifice plate 230 installed at the three places of the common pipe part 211a and the branch pipe parts 211c and 211d according to the use of the air supply pipe and the request of the water level of the air supply destination. At least one of can also be omitted.

  Moreover, although the air supply piping 210 of the said embodiment described the case where it was connected to the blower discharge piping 201 via the attachment / detachment joint 202 provided in the blower discharge piping 201 side, it described in this invention. The air supply pipe 210 may be configured as a pipe integral with the blower discharge pipe 201 on the upstream side.

  Moreover, in the said embodiment, in the water treatment apparatus 100 which accommodates the 1st anaerobic filter bed tank 110, the 2nd anaerobic filter bed tank 130, the carrier fluid biological filtration tank 150, the treated water tank 180, and the disinfection tank 190 in the tank main body 101. However, in the present invention, the present invention can be applied to the configuration of a water treatment apparatus having a plurality of air treatment areas where treated water is treated by supply air. With regard to the above, the type, number, and combination of the various purification processing parts accommodated in the tank body 101 can be appropriately changed as necessary.

  Moreover, in the said embodiment, although the household water treatment apparatus was described, this invention applies not only to a household water treatment apparatus but to various water treatment apparatuses installed in a factory etc. similarly. Applicable technology.

It is a figure which shows schematic structure of the water treatment apparatus 100 of one Embodiment of the "water treatment apparatus" in this invention. It is the top view which looked at the air supply piping 210 in FIG. 1 from upper direction (manhole opening 104 side of the tank main body 101). It is the top view which looked at the air supply piping 310 of another embodiment from the upper direction (manhole opening 104 side of the tank main body 101). It is the top view which looked at the air supply piping 410 of another embodiment from the upper direction (manhole opening 104 side of the tank main body 101).

DESCRIPTION OF SYMBOLS 100 ... Water treatment apparatus 101 ... Tank main body 110 ... 1st anaerobic filter bed tank 112 ... Filter bed 130 ... 2nd anaerobic filter bed tank 132 ... Filter bed 150 ... Carrier fluid biological filtration tank 152 ... Carrier filling area | region 154 ... Upper support | carrier movement Prevention member 156 ... Lower carrier movement prevention member 160 ... Air diffuser 162 ... Backwash device 164 ... First air lift 166 ... Second air lift 170 ... Carrier 180 ... Treatment water tank 190 ... Disinfection tank 192 ... Medicine cylinder 200 ... Blower 201 ... Blower discharge pipes 202, 203, 204, 205 ... Detachable joints 210, 220, 310, 410 ... Air supply pipe 211 ... Upstream pipe section 211a ... Common pipe sections 211b, 211c, 211d ... Branch pipe sections 213, 215, 217 ... Downstream piping section 230 ... Orifice plate 430 ... Adjustment air valve 431 ... Adjustment lever

Claims (4)

An air supply pipe for a water treatment device installed in a water treatment device that houses a purification treatment section of water to be treated in a tank body,
An air supply pipe for connecting in parallel between an air supply source for supplying air and a plurality of air treatment regions in which treated water is treated by the supply air;
The air supply piping section is an upstream piping section connected to the downstream side of the air supply source, and a downstream piping section that is disposed on the downstream side of the upstream piping section and has an air outlet toward the air processing region. When a configuration comprising a detachable joint with respect to the downstream pipe portion connecting detachably the upstream pipe portion, an orifice for throttling the tube passage is provided in the upstream pipe section the upstream pipe portion,
The upstream piping portion includes a common piping portion and a branch piping portion that is branched from the common piping portion and disposed on the downstream side of the upstream piping portion, and the common piping portion and the branch piping portion have an integrated structure. Configuration
The common pipe part is configured to be detachably connected to the downstream side of the air supply source via a second detachable joint,
Accordingly, the air for the water treatment apparatus is characterized in that the orifice provided in the upstream pipe section can be detached from the downstream pipe section and the air supply source side via the detachable joint and the second detachable joint. Supply piping. An air supply pipe for a water treatment device according to claim 1,
For the water treatment apparatus, wherein the common pipe section and the branch pipe section are disposed in a peripheral region of a manhole opening disposed above the tank body in an interior state with respect to the water treatment apparatus. Air supply piping. A water treatment apparatus that houses a purification treatment section of water to be treated in a tank body,
Among the purification treatment units, a plurality of air treatment regions where treated water is treated by supply air;
An air supply source for supplying air;
An air supply pipe for connecting the air supply source and the plurality of air treatment regions in parallel;
With
The air supply pipe includes an upstream pipe connected to a downstream side of the air supply source, a downstream pipe having a discharge port of air disposed on the downstream side of the upstream pipe and directed toward the air processing region. the a detachable joint for detachably connecting the upstream pipe portion to the downstream pipe section, a configuration including an orifice for throttling the tube passage is provided in the upstream pipe section the upstream pipe portion,
The upstream piping portion includes a common piping portion and a branch piping portion that is branched from the common piping portion and disposed on the downstream side of the upstream piping portion, and the common piping portion and the branch piping portion have an integrated structure. Configuration
The common pipe part is configured to be detachably connected to the downstream side of the air supply source via a second detachable joint,
Thereby, the said orifice provided in the said upstream piping part is detachable from the said downstream piping part and an air supply source side via the said attachment / detachment joint and the said 2nd attachment / detachment joint , The water treatment apparatus characterized by the above-mentioned. The water treatment device according to claim 3,
A water treatment apparatus, comprising a manhole opening disposed above the tank body, wherein the common pipe section and the branch pipe section are disposed in a peripheral region of the manhole opening.

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