JP6541384B2 - Water treatment equipment - Google Patents

Description

  The present invention relates to a water treatment apparatus for treating sewage such as domestic wastewater.

  The water treatment apparatus is disclosed by Unexamined-Japanese-Patent No. 2008-043896. This water treatment apparatus includes a contaminant removal tank, an anaerobic filter tank, a contact filter tank, a treated water tank, and a disinfecting tank. Sewage that has flowed into the water treatment system from the inflow pipe is treated in the contaminant removal tank, the anaerobic filter bed tank, the contact filter bed tank, the treatment water tank, and the disinfection tank in sequence, and then discharged from the discharge pipe to the outside of the water treatment system. Ru.

JP, 2008-043896, A

  In the above water treatment apparatus, the wall of the treatment tank holding the disinfection tank is cantilevered so as to protrude to the contact filter bed with respect to the partition separating the anaerobic filter bed and the contact filter bed. It is attached. Therefore, it is necessary to consider the attachment of the wall to the tank body so that the wall is not installed inclined to the tank body. That is, the improvement regarding support of the wall provided in a water treatment apparatus is desired. This invention is made in view of this point, and it makes it a subject to provide the improved technique regarding support of the wall attached to the section wall which divides a water treatment area.

  The above problems are solved by the present invention. According to the preferable form of the water treatment apparatus which concerns on this invention, the water treatment apparatus provided with the several water treatment tank which processes with respect to the to-be-processed water which contains sludge is comprised. The water treatment apparatus includes a tank body, a first partition wall attached to the tank body, and a second partition wall attached to the first partition wall. The tank body houses a plurality of water treatment areas. As a plurality of water treatment areas, the first partition wall divides the area in the tank body into a first treatment area and a second treatment area. Typically, the first partition wall is provided to cross the treatment direction (generally corresponding to the movement direction of the treated water) of the treated water from the inlet to the outlet of the water treatment apparatus. The direction in which the straight line connecting the inflow port and the outflow port of the water treatment apparatus extends is also referred to as the front-rear direction of the water treatment apparatus. Furthermore, the second partition wall is further provided to partition the water treatment area. Typically, the second partition wall further partitions one of the first processing region and the second processing region into a plurality of processing regions. The plurality of water treatment areas suitably include a solid-liquid separation area, an anaerobic treatment area, an aerobic treatment area, a disinfection area, and the like. And the convex part which protrudes horizontally is formed in one of a tank main-body part and a 2nd partition wall, and the recessed part engaged with a convex part is formed in the other of a tank main-body part and a 2nd partition wall. ing. The second partition wall is configured to be supported by the tank body by the engagement of the projection and the recess. Typically, a convex portion is provided at a position spaced apart from the first partition wall in the tank longitudinal direction. That is, the first partition wall is supported by the tank body at a plurality of positions in the tank longitudinal direction.

  According to the present invention, the first partition wall is supported not only directly by the tank body but also indirectly by the tank body via the second partition wall. Thereby, the first partition wall can be installed without being inclined with respect to the tank body.

Further, according to the water treatment apparatus according to the present invention, the tank body is formed by joining the upper tank structure and the lower tank structure. The upper tank structure and the lower tank structure are preferably joined in a substantially central region in the vertical direction in the state where the water treatment apparatus is installed. The convex portion is provided on the second partition wall. On the other hand, the recess is provided between the upper tank structure and the lower tank structure in the tank body. That is, the recessed part is formed in the area | region where an upper side tank structure and a lower side tank structure are connected. Thus, the upper and lower tank formations respectively constitute part of the recess. The convex part formed in the 2nd division wall is arrange | positioned between the upper side tank structure and the lower side tank structure which were comprised as a recessed part, and is clamped by the upper side tank structure and a lower side tank structure. In the present embodiment, not only the convex portion and the concave portion directly abut on each other, but a spacer such as a shim or an inclusion such as an adhesive may be interposed between the convex portion and the concave portion.

  According to the further form of the water treatment apparatus which concerns on this invention, a 2nd division wall is comprised so that the 3rd treatment area | region surrounded by the 1st division wall and the 2nd division wall may be formed in a 2nd treatment area. Be done. In the third treatment area, a disinfection area for disinfecting the water to be treated in the third treatment area before draining the water to the outside of the water treatment apparatus is set. In the third treatment area, only the sterilization area may be provided, or a treatment area other than the sterilization area may be provided. When the disinfecting area and the area other than the disinfecting area are formed in the third processing area, it is preferable that the third dividing wall which divides the third processing area is held by the second dividing wall.

  According to the further form of the water treatment apparatus which concerns on this invention, the 2nd division wall and a tank main-body part are penetrated, and the discharge pipe for discharging the to-be-processed water in a disinfection area | region outside a water treatment apparatus is provided The projection is provided below the discharge pipe.

  According to the further form of the water treatment device concerning the present invention, the 1st section wall and the 2nd section wall are attached to a tank main part in the state where the 1st section wall and the 2nd section wall were mutually pre-assembled. Is configured as. That is, an assembly body in which the first partition wall and the second partition wall are integrated in advance is configured, and the assembly body is attached to the tank body. Therefore, the second partition wall defining the third processing region is attached simultaneously with the assembly of the first partition wall partitioning the first processing region and the second processing region. Therefore, the manufacturing process of the water treatment apparatus can be simplified.

  According to the further form of the water treatment apparatus which concerns on this invention, the anaerobic treatment area | region which anaerobically treats to-be-processed water is set to a 1st process area | region. The second treatment area is provided downstream of the first treatment area in the water treatment area in the flow direction of the water to be treated, and the second treatment area is aerobically treated to aerobically treat the water to be treated. An area is set. In addition, in the first treatment area, at least an anaerobic treatment area may be set, and for example, a solid-liquid separation area for performing solid-liquid separation may be further provided. Further, at least an aerobic treatment area may be set in the second treatment area, and for example, a disinfection area for disinfecting the water to be treated before being drained from the water treatment apparatus may be further provided. According to this aspect, in the water treatment region, the anaerobic treatment of the water to be treated is performed in the first treatment region on the upstream side, and the aerobic treatment of the water to be treated is performed in the second treatment region on the downstream side.

  According to the present invention, there is provided an improved technique for supporting a wall attached to a partition wall that defines a water treatment area.

It is a figure which shows the outline | summary of the water treatment apparatus which concerns on typical embodiment of this invention. It is a figure which shows the processing flow of the to-be-processed water in a water treatment apparatus. It is a top view of the water treatment apparatus in the III-III line of FIG. FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 3; FIG. 5 is a cross-sectional view taken along the line VV of FIG. 3; FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 3; FIG. 10 is a perspective view showing an assembly of a partition wall and a partition wall. It is an expanded sectional view of the connection field of an upper tank composition and a lower tank composition.

  Below, the structure of the water treatment apparatus in typical embodiment of this invention is demonstrated with reference to FIGS. 1-8. In addition, this embodiment demonstrates the water treatment apparatus which receives and processes the raw water (it is also called "drainage" thru | or "to-be-treated water") discharged | emitted from a general household, apartment housing, etc. in a water treatment area.

  As shown in FIG. 1, the water reclamation apparatus 100 has a tank-like treatment tank main body 101 that constitutes a casing (outer shell) of the water reclamation apparatus 100. The processing tank body 101 is configured by connecting an upper tank component 101A disposed above and a lower tank component 101B disposed below in the vertical direction. The upper tank structure 101A and the lower tank structure 101B are an example of an implementation configuration corresponding to the "upper tank structure" and the "lower tank structure" in the present invention, respectively. As shown in FIGS. 1 and 3, the processing tank main body 101 is formed in a substantially rectangular shape in a plan view, and is parallel to each other, side walls 101a and 101b, side walls 101c and 101d parallel to each other, a bottom wall 101e and an upper wall It consists of 101f. The water reclamation apparatus 100 is a water treatment apparatus configured to treat domestic waste water (living water) together with manure. This processing tank main body 101 is an implementation structural example corresponding to the "tank main body" in this invention.

  As shown in FIG. 1, the processing tank main body 101 includes an inflow pipe 102, an outflow pipe 103, and a manhole portion 104. The inflow pipe 102 is configured as an opening portion for introducing the water to be treated (raw water) into the internal space of the treatment tank main body 101. The outflow pipe 103 is configured as an opening portion for leading out the water after the treatment from the internal space of the treatment tank main body 101. The manhole portion 104 is configured as a portion where a manhole for entering a tank, for internal inspection, and for cleaning is formed.

  The manhole portion 104 side (upper tank formation body 101A side, upper wall 101f side) of the treatment tank main body 101 is defined as the tank upper side or the tank upper portion, and the opposite side (lower layer formation body 101B side, bottom wall 101e side) is defined as the lower part of the tank, the lower part of the tank or the bottom part of the tank. Further, the inflow pipe 102 side (side wall 101 c side) of the processing tank main body 101 is defined as the upstream side, and the outflow pipe 103 side (side wall 101 d side) is defined as the downstream side. Further, in FIG. 1, the direction along the extension surface of the manhole portion 104 is defined as the horizontal direction (also referred to as the tank longitudinal direction), and the direction intersecting the horizontal direction is defined as the vertical direction (also referred to as the tank vertical direction). Ru. Further, a direction perpendicular to the paper surface of FIG. 1 (a direction perpendicular to the tank longitudinal direction and the tank vertical direction, a vertical direction in FIG. 3) is defined as the tank left-right direction. The arrows in FIGS. 1 to 6 indicate the flow of the water to be treated.

  As shown in FIG. 1, in the internal space of the treatment tank main body 101, there is formed a water treatment area in which predetermined water treatment is performed while storing the raw water received through the inflow pipe. In the water treatment area, a precipitation separation tank 120, a cleaning hole 130, an anaerobic treatment tank 140, an aerobic treatment tank 150, a treatment water tank 160, and a disinfection tank 170 are formed. As shown in FIG. 2, the waste water flowing into the treatment tank main body 101 (inflow baffle 110) through the inflow pipe 102 is collected in the sedimentation separation tank 120, the anaerobic treatment tank 140, the aerobic treatment tank 150, the treatment water tank 160 and the disinfection tank 170. The water that has been sequentially treated and treated is drained to the outside of the treatment tank main body 101 through the outflow pipe 103. Further, water to be treated is configured to circulate between the precipitation separation tank 120 and the cleaning hole 130 and between the anaerobic treatment tank 140 and the aerobic treatment tank 150. The water treatment apparatus 100 may be configured as a septic tank that discharges the water that has flowed out of the treatment tank main body 101 as it is, or the water that has flowed out of the treatment tank main body 101 is used as a toilet or water for sprinkling. It may be configured as a water reuse device to be reused.

  The inflow baffle 110 constitutes the most upstream area of the water treatment area. The waste water flowing into the inflow baffle 110 from the inflow pipe 102 is transferred to the settling tank 120. The water to be treated that has flowed into the precipitation separation tank 120 is subjected to solid-liquid separation treatment, and the solid component separated from the water to be treated is deposited on the bottom of the precipitation separation tank 120 as precipitation sludge. When the drainage flows into the inflow baffle 110, the drainage indirectly flows into the precipitation separation tank 120, and the agitation of sedimented sludge or the like in the precipitation separation tank 120 is suppressed.

  As shown to FIG. 1 and FIG. 3, the partition 105 extended in a tank up-down direction (vertical direction) is provided between the precipitation separation tank 120 and the anaerobic treatment tank 140 of the downstream. The partition wall 105 is attached to the side walls 101a and 101b of the upper side tank structure 101A and the lower side tank structure 101B and the bottom wall 101e of the lower side tank structure 101B. As shown in FIG. 4, left and right openings 105 a and 105 b communicating the precipitation separation tank 120 and the anaerobic treatment tank 140 are formed in the upper region of the partition wall 105. As shown in FIG. 3 and FIG. 4, a partition wall 131 for partitioning the settling tank 120 and the cleaning hole 130 is attached to the partition wall 105. The partition wall 131 is provided apart from the side walls 101a and 101b in the tank left-right direction, and provided apart from the side walls 101c and 101d in the tank front-rear direction. By the partition wall 131, the cleaning hole 130 is set corresponding to the central region of the partition 105 in the lateral direction of the tank. That is, the cleaning hole 130 includes a central portion in the tank lateral direction of the processing tank main body 101, and as shown in FIG. 3, has a symmetrical shape with respect to the central portion. In other words, the cleaning hole 130 passes through the center of the processing tank main body 101 in the lateral direction of the tank, and is formed symmetrically with respect to a virtual plane extending in the longitudinal direction of the tank. Openings 105 a and 105 b are provided to the left and right of the cleaning hole 130, respectively.

  As shown in FIGS. 1 and 4, the lower end of the partition wall 131 is arranged to be separated from the bottom (bottom wall 101 e) of the processing tank main body 101, whereby the lower region of the precipitation separation tank 120 is It communicates with the cleaning hole 130. That is, the lower end portion of the partition wall 131 is formed as the lower end opening 130a of the cleaning hole 130, and the lower end opening 130a is formed to be separated upward from the bottom wall 101e. The upper end opening 130b of the cleaning hole 130 at the upper end portion of the partition wall 131 is formed to be separated downward from the upper wall 101f. The cleaning hole 130 is provided with a long, mesh-like filter medium 132 formed as a draft tube and a first air diffusion pipe 190 penetrating the filter medium 132. The first aeration tube 190 is disposed in the right area of the cleaning hole 130, as shown in FIG. When air is supplied from the lower end portion of the first air diffusion pipe 190 into the cleaning hole 130 through the lower end opening 130a, upward flow occurs in the area on the right side of the cleaning hole 130, and the area on the left side of the cleaning hole 130 Downflow occurs in the Thereby, a swirling flow is generated in the cleaning hole 130, and the water to be treated in the cleaning hole 130 is agitated. Therefore, the cleaning holes 130 are also referred to as stirring holes for stirring the water to be treated.

  The air aerated from the first aeration tube 190 passes through the filter medium 132 and is subdivided. The sludge deposited on the bottom of the settling tank 120 circulates in the cleaning hole 130 together with the water to be treated by a swirling flow (upward flow and downward flow). In the cleaning holes 130, the sludge is efficiently treated aerobically by the subdivided air. Due to the fluctuation of the water level in the water treatment area, the sludge in the cleaning hole 130 and the sludge at the bottom of the settling tank 120 come and go, whereby the sludge including bubbles is supplied into the settling tank 120. As a result, in the sedimentation separation tank 120, the sludge containing bubbles floats up and scums, and the sludge is stored at a high concentration.

  As shown in FIG. 3, the water to be treated in the precipitation separation tank 120 is transferred to the anaerobic treatment tank 140 on the downstream side through the left and right openings 105a and 105b.

  As shown in FIGS. 1, 3 and 5, the anaerobic treatment tank 140 includes a first anaerobic chamber 141 and a second anaerobic chamber 142. A partition 106 extending in the vertical direction (vertical direction) of the tank and in the lateral direction of the tank is provided between the anaerobic treatment tank 140 and the aerobic treatment tank 150 on the downstream side thereof. The partition wall 106 is attached to the side walls 101a and 101b of the upper side tank structure 101A and the lower side tank structure 101B and the bottom wall 101e of the lower side tank structure 101B. That is, the partition 106 is connected to the upper side tank structure 101A and the lower side tank structure 101B of the tank body 101 forming the outer wall of the water treatment apparatus 100. Thus, the partition wall 106 is upstream of the anaerobic treatment tank 140 or the like on the front side (left side in FIGS. 1 and 3) with respect to the tank longitudinal direction (left and right direction in FIGS. 1 and 3) in the water treatment area of the water treatment apparatus 100. The processing area is divided into a plurality of processing areas in the downstream processing area such as the aerobic processing tank 150 on the rear side (the right side of FIGS. 1 and 3). This partition wall 106 corresponds to the "first partition wall" in the present invention. In addition, the anaerobic treatment tank 140 and the aerobic treatment tank 150 correspond to the “first treatment area” and the “second treatment area” in the present invention, respectively. On the front side (upstream side) of the partition wall 106, as shown in FIG. 3, a partition wall 143 for partitioning the first anaerobic chamber 141 and the second anaerobic chamber 142 is attached. . By this partition wall 143, the second anaerobic chamber 142 is set corresponding to the central region of the partition wall 106 in the left-right direction of the tank. As shown in FIG. 5, the lower end portion of the partition wall 143 is disposed to be separated from the bottom portion of the processing tank main body 101, whereby the lower region of the first anaerobic chamber 141 communicates with the second anaerobic chamber 142. doing.

  Further, as shown in FIG. 3, on the rear side (downstream side) of the partition wall 106, a partition wall 161 for partitioning the region on the downstream side of the partition wall 106 into the aerobic treatment tank 150 and the treatment water tank 160 is attached. There is. This partition wall 161 is an implementation structural example corresponding to the "2nd partition wall" in this invention. In addition, the treatment water tank 160 is an implementation configuration example corresponding to the “third treatment area” in the present invention. The length in the tank left-right direction of the second anaerobic chamber 142 partitioned by the partition wall 143 is set to be longer than the length in the tank left-right direction of the processing water tank 160 partitioned by the partition wall 161. Thereby, as shown in FIG. 3, FIG. 5 and FIG. 6, the dividing wall 106 is the outside of the dividing wall 161 (outside of the processing water tank 160) in the tank left-right direction. In the inside of the anaerobic chamber 142), left and right openings 106a and 106b are provided, which communicate the second anaerobic chamber 142 with the aerobic treatment tank 150.

  The partition wall 106 is assembled to the processing tank main body 101 in a state in which the partition wall 143 and the partition wall 161 are attached to the partition wall 106 in advance. Specifically, as shown in FIG. 7, an assembly body in which the partition wall 161 and the partition wall 143 are attached to each surface of the partition wall 106 is configured. Thereafter, by attaching the assembly body to the processing tank body 101, the partition wall 106, the partition wall 143 and the partition wall 161 are assembled. Thereby, in the manufacturing process of the water treatment apparatus 100, the second anaerobic chamber 142, the aerobic treatment tank 150, and the treated water tank 160 are installed efficiently and simply.

  As shown in FIG. 1 and FIG. 3, in the first anaerobic chamber 141, in an intermediate region in the vertical direction of the tank, an anaerobic filter filled with a predetermined amount of anaerobic filter medium to which an anaerobic microorganism for anaerobically treating an organic pollutant is attached. A floor 144 is provided to be supported by the processing tank body 101. As the anaerobic filter medium, a flat filter medium or a skeleton-like spherical filter medium can be suitably used. In the anaerobic filter bed 144, the water to be treated is subjected to anaerobic treatment and filtration treatment, thereby reducing BOD and removing sludge.

  The water to be treated anaerobically treated in the first anaerobic chamber 141 is transferred from the lower region of the first anaerobic chamber 141 to the lower region of the second anaerobic chamber 142 and ascends in the second anaerobic chamber 142. Thereafter, the water to be treated passes through the opening 106 a and the opening 106 b and is transferred to the aerobic treatment tank 150.

  In the second anaerobic chamber 142, a first air lift pump 180 is installed. The first air lift pump 180 returns the sludge precipitated in the anaerobic treatment tank 140 to the inflow baffle 110 together with the water to be treated. The first air lift pump 180 is provided in a second anaerobic chamber 142 in which the anaerobic filter bed is not provided. Therefore, the interference between the first air lift pump 180 and the anaerobic filter bed 144 is avoided. That is, the second anaerobic chamber 142 has a function of circulating the treated water flowing into the anaerobic treatment tank 140 as a downward flow in the first anaerobic chamber 141 to perform anaerobic treatment, and the first air lift pump 180 having an anaerobic filter 144 Have the ability to isolate from

  As shown in FIG. 3, on the downstream side of the partition wall 106, a processing water tank 160 is set in a central region in the left-right direction of the tank. Specifically, an area surrounded by the dividing wall 161 is set as the processing water tank 160. Further, as shown in FIG. 6, the aerobic treatment tank 150 is formed in the treatment tank main body 101 so that the left region and the right region communicate with each other in the lower region with the treatment water tank 160 interposed therebetween. The lower region of the aerobic treatment tank 150 is in communication with the treatment water tank 160.

  As shown in FIG. 6, in the aerobic treatment tank 150, aerobic filter beds 151a and 151b to which aerobic microorganisms that aerobically decompose (aerobic treatment) organic contaminants in the water to be treated adhere are provided. There is. The aerobic filter bed 151a is provided in a region below the aerobic filter bed 151b. The aerobic filter bed 151a is constituted by a reticulated roll-like filter medium. Specifically, the reticulated roll-like filter medium is a reticulated body in which wires made of a resin such as polypropylene and polyethylene are entangled three-dimensionally, and is formed into a cylindrical shape having a diameter of about 100 mm and a length of about 100 mm. Therefore, the aerobic filter bed 151a is configured by filling a plurality of mesh-like roll-like filter media in a predetermined area. The aerobic filter medium of the aerobic filter bed 151a may be a reticulate body, a spherical body, a plate-like filter medium, or a filter medium formed of a porous material. On the other hand, the aerobic filter bed 151b is constituted by a block-like (single) filter medium. Specifically, the block-shaped filter medium is a net-like body in which wires made of a resin such as polypropylene and polyethylene are entangled three-dimensionally, and are integrally formed in a block shape. Accordingly, the upper aerobic filter bed 151b has a lid function to prevent the plurality of filter media of the lower aerobic filter bed 151a from flowing out. The aerobic filter bed 151 b is held by a holding member such as a net or a plate-like member supported by the processing tank main body 101. In addition, as long as the aerobic filter material of the aerobic filter bed 151b is a filter material shape | molded integrally, it may be shape | molded in other shapes, such as plate shape.

  As shown in FIG. 6, the aerobic treatment tank 150 is provided with a second aeration pipe 191. Thereby, the treated water passing through the aerobic filter bed 151 is treated aerobically by the air supplied from the second aeration pipe 191. The treated water aerobically treated by the aerobic filter beds 151 a and 151 b is transferred to the lower region of the aerobic treatment tank 150.

  As shown in FIGS. 1 and 6, the processing water tank 160 is provided with a second air lift pump 181. The second air lift pump 181 extends to the lower region of the processing water tank 160. As a result, part of the water to be treated transferred from the aerobic treatment tank 150 to the treatment water tank 160 is returned to the inflow baffle 110 by the second air lift pump 181 before being transferred to the treatment water tank 160. Thereby, the to-be-processed water in the water treatment apparatus 100 circulates through the inflow baffle 110, the precipitation separation tank 120, the anaerobic treatment tank 140, and the aerobic treatment tank 150.

  As shown in FIGS. 1 and 3, a disinfecting tank 170 further divided by a dividing wall 171 is provided inside the dividing wall 161 forming the treated water tank 160. This disinfection tank 170 is an implementation structural example corresponding to the "disinfection area | region" in this invention. The partition wall 171 forming the disinfecting tank 170 is attached to the partition wall 161. The partition wall 171 is attached in advance to the partition wall 161, and constitutes a part of an assembly formed by the partition wall 106 and the partition walls 143 and 161. Further, the treatment water tank 160 is provided with a third air lift pump 182 for transferring the water to be treated in the treatment water tank 160 to the disinfecting tank 170.

  The disinfecting tank 170 is provided with a drug cylinder (not shown) filled with a solid disinfectant for disinfecting. The water that has been disinfected by the disinfectant eluted from the drug cylinder is discharged to the outside of the treatment tank main body 101 through the outflow pipe 103. Further, another tank, for example, a discharge pump tank provided with a discharge pump may be provided downstream of the disinfecting tank 170.

  The first to third air lift pumps 180 to 182 and the first and second air diffusers 190 and 191 are connected to an air supply device (not shown), and the air valve switches supply and shutoff of air. The air valves provided to the first to third air lift pumps 180 to 182 and the first and second aeration tubes 190 and 191 are controlled by a controller (not shown).

  The head of the first to third air lift pumps 180 to 182 fluctuates as the water level in the water treatment area fluctuates. That is, when the water level of the water to be treated in the water treatment area becomes high, the head becomes short and the transfer amount of the water to be treated by the air lift pump becomes large. On the other hand, if the water level of the water to be treated in the water treatment area is lowered, the lift will be long, and the transfer amount of the water to be treated by the air lift pump will be reduced. Therefore, by using the air lift pump, even if the amount of drainage flowing into the water treatment apparatus 100 increases and the water level in the water treatment area rises, the capacity of the air lift pump can be increased according to the rise in water level. .

  Next, assembly of the partition wall 106 and the partition walls 143 and 161 to the processing tank main body 101 will be described. As shown in FIG. 7, the partition wall 161 is provided with a fixing rib 162 that protrudes toward the rear of the tank and extends in the left-right direction of the tank. The fixing rib 162 is provided below the opening 165 for disposing the outflow pipe 103 formed in the partition wall 161. This fixing rib 162 is an example of implementation composition corresponding to the "convex part" in the present invention.

  As shown in FIG. 8, the fixing rib 162 is held and supported by the upper tank structure 101A and the lower tank structure 101B in the connection region 200 of the upper tank structure 101A and the lower tank structure 101B. As shown in FIG. 1, the connection area 200 is set to a substantially central area in the vertical direction of the water treatment apparatus 100.

  As shown in FIG. 8, the upper tank structure 101 </ b> A is provided with a connecting flange 210 projecting to the outside of the water treatment apparatus 100. The connecting flange 210 is provided over the entire outer periphery of the water treatment apparatus 100. The connecting flange 210 is connected to the horizontal portion 210a horizontally extending from the side wall 101a, 101b, 101c, 101d of the upper tank structure 101A and the tip of the horizontal portion 210a, and extends vertically. It is constituted by the vertical portion 210b.

  Moreover, the connection flange 220 is similarly provided in lower side tank structure 101B. The connection flange 220 is provided over the entire outer periphery of the processing apparatus 100 in correspondence with the connection flange 210. The connecting flange 220 is stepped at the tip of the first horizontal portion 220a horizontally extending from the side walls 101a, 101b, 101c, 101d of the lower tank component 101B and the tip of the first horizontal portion 220a. It is comprised by the connected 2nd horizontal part 220b. Thereby, the holding part 230 in which the fixed rib 162 of the section wall 161 is held is formed. This holding part 230 is an implementation structural example corresponding to the "recess" in the present invention.

  First, the assembly of the partition wall 106 and the partition walls 143 and 161 is placed on the lower tank structure 101B. At this time, the holding portion 230 of the lower tank-constituting body 101B and the fixed rib 162 of the partition wall 161 are engaged, and the upper surface of the fixed rib 162 and the upper surface of the second horizontal portion 220b are substantially flush. Thereafter, the adhesive 240 is applied to the upper surfaces of the fixed rib 162 and the second horizontal portion 220b, and the upper tank structure 101A is placed. Thereby, the fixed rib 162 of the partition wall 161 is pinched by the upper side tank structure 101A and the lower side tank structure 101A. The connection flange 210 of the upper tank structure 101A and the connection flange 220 of the lower tank structure 101B are joined by fixing means such as rivets 250 provided at predetermined intervals. In addition, you may use a bolt, a nut, etc. as a fixing means. After the partition wall 161 is assembled to the processing tank main body 101, the outflow pipe 103 is installed so as to penetrate the opening 165 and the opening (not shown) of the upper tank structure 101A.

  According to the above-described embodiment, the partition wall 106 that divides the anaerobic treatment tank 140 and the aerobic treatment tank 150 by the engagement of the fixed rib 162 and the treatment tank main body 101 (the holding unit 230) Not only is it directly supported by the side walls 101a and 101b, but it is also supported by the side wall 101d of the processing tank main body 101 via the partition wall 161 (fixed rib 162). As a result, it is avoided that the processing tank main body 101 is attached to be inclined and is stably held by the processing tank main body 101. At this time, the fixing rib 162 also has a function of aligning the position of the opening 165 of the partition wall 161 with the opening of the upper tank structure 101A.

  Further, according to the above-described embodiment, since the fixing rib 162 is provided to extend in the left-right direction of the tank, the fixing rib 162 is supplied from the second aeration pipe 191 between the partition wall 161 and the upper tank structure 101A. Air is prevented from entering.

  Further, according to the present embodiment, the assembly body in which the partition wall 161 and the partition wall 143 are attached to each surface of the partition wall 106 is attached to the processing tank main body 101. As a result, the assembling operation of the partition wall 106, the partition wall 143 and the partition wall 161 with respect to the processing tank main body 101 is simplified.

  Moreover, according to the above this embodiment, in the water treatment apparatus 100, the cleaning hole 130 is arrange | positioned so that the sedimentation separation tank 120 may be surrounded by planar view. Therefore, communication between the precipitation separation tank 120 and the cleaning hole 130 can be achieved in a plurality of directions. That is, the sedimentation separation tank 120 and the cleaning hole 130 communicate with each other in the left-right direction and the front-rear direction of the processing tank main body 101. Thus, the water to be treated is efficiently circulated between the precipitation separation tank 120 and the cleaning hole 130.

  Further, according to the present embodiment, the air supplied from the first aeration pipe 190 generates a swirling flow in the water to be treated in the cleaning hole 130 and the settling separation tank 120 by the flow of the water to be treated by the swirling flow. Water to be treated is efficiently circulated between the and the cleaning holes 130. Further, since the air supplied from the first aeration tube 190 is subdivided by the filter medium 132, the sludge contained in the water to be treated swirling in the cleaning hole 130 can be effectively aerobically treated by the fine bubbles. .

  In the above embodiment, although the partition 106 and the partition walls 143 and 161 constitute an assembly body integrated in advance, the present invention is not limited thereto. For example, only the partition wall 106 and the partition wall 161 may constitute an integrated assembly.

  Further, in the above-described embodiment, the fixing rib 162 as a convex portion is formed on the partition wall 161, and the holding portion 230 as a concave portion is formed on the processing tank main body 101. However, the present invention is not limited thereto. For example, a recess may be formed in the partition wall 161, and a protrusion may be formed in the processing tank main body 101 (the upper tank structure 101A or the lower tank structure 101B).

  Moreover, although the air lift pump was provided in the water treatment apparatus 100 in the above this embodiment, you may install submersible pumps other than an air lift pump. In that case, the controller controls the transfer amount of the water to be treated by the submersible pump according to the fluctuation of the water level.

  Moreover, in the above embodiment, the water treatment apparatus 100 includes each processing element of the inflow baffle 110, the precipitation separation tank 120, the cleaning hole 130, the anaerobic treatment tank 140, the aerobic treatment tank 150, the treatment water tank 160, and the disinfection tank 170. Although the case where it comprises by (1) was demonstrated, various selection is possible as needed regarding the number and kind of processing elements. Therefore, only the treated water tank 160 may be formed in the area surrounded by the dividing wall 161, or in addition to the treated water tank 160 and the disinfecting tank 170, an aerobic treatment tank or the like may be formed.

  Moreover, in the above embodiment, although described about the water treatment apparatus 100 which processes the raw water discharged | emitted from a general household, an apartment house, etc., this invention is commercial facilities, a public facility, other than a household, an apartment house, The present invention is also applicable to a water treatment apparatus that treats raw water discharged from facilities such as a factory.

(Correspondence of each component of the embodiment and each component of the present invention)
The above embodiment shows an example of the form for carrying out the present invention. Therefore, the present invention is not limited to the configuration of the embodiment. In addition, the correspondence of each component of embodiment, and each component of this invention is shown below.
The water treatment apparatus 100 is an example of the structure corresponding to the "water treatment apparatus" of this invention.
The processing tank main body 101 is an example of the structure corresponding to the "tank main part" of this invention.
The upper tank structure 101A is an example of a configuration corresponding to the "upper tank structure" of the present invention.
The lower tank structure 101B is an example of a configuration corresponding to the “lower tank structure” in the present invention.
The outflow pipe 103 is an example of a configuration corresponding to the “discharge pipe” of the present invention.
The partition 106 is an example of the structure corresponding to the "1st division wall" of this invention.
The dividing wall 161 is an example of the structure corresponding to the "2nd dividing wall" of this invention.
The fixing rib 162 is an example of the structure corresponding to the "convex part" of this invention.
The holding part 230 is an example of the structure corresponding to the "recess" of this invention.
Precipitation separation tank 120 is an example of composition corresponding to a "1st processing field" of the present invention.
The cleaning hole 130 is an example of the structure corresponding to the "1st process area | region" of this invention.
The anaerobic treatment tank 140 is an example of the structure corresponding to the "1st process area | region" of this invention.
The anaerobic treatment tank 140 is an example of the structure corresponding to the "anaerobic treatment area" of the present invention.
The aerobic treatment tank 150 is an example of the structure corresponding to the "2nd process area | region" of this invention.
The aerobic treatment tank 150 is an example of the structure corresponding to the "aerobic processing area" of this invention.
The processing water tank 160 is an example of the structure corresponding to the "2nd processing area | region" of this invention.
The disinfection tank 170 is an example of the structure corresponding to the "2nd process area | region" of this invention.
The disinfection tank 170 is an example of the structure corresponding to the "3rd process area | region" of this invention.
The disinfection tank 170 is an example of the structure corresponding to the "disinfection area | region" of this invention.

DESCRIPTION OF SYMBOLS 100 water treatment apparatus 101 treatment tank main body 101A upper side tank structure 101B lower side tank structure 101a side wall 101b side wall 101c side wall 101d side wall 101e bottom wall 101f top wall 102 inflow pipe 103 outflow pipe 104 manhole part 105 partition 105a opening 105b opening 106 Partition 106a Opening 106b Opening 110 Inflow baffle 120 Sedimentation separation tank 130 Cleaning hole 130a Bottom opening 130b Top opening 131 Division wall 132 Filter material 140 Anaerobic treatment tank 141 1st anaerobic chamber 142 2nd anaerobic chamber 143 Division wall 144 Anaerobic filter floor 150 aerobic treatment tank 151 aerobic filter floor 160 treated water tank 161 section wall 162 fixed rib 165 opening 170 disinfection section 171 section wall 180 first air lift pump 181 second air lift pump 182 third air lift pump 190 first air diffuser 1 91 second aeration tube 200 connecting area 210 connecting flange 210a horizontal part 210b vertical part 220 connecting flange 220a first horizontal part 220b second horizontal part 230 holding part 240 adhesive 250 rivet

Claims (5)

A water treatment apparatus comprising a plurality of water treatment areas for treating treated water containing sludge, comprising:
A tank body comprising the plurality of water treatment areas;
A partition wall which is attached to the tank body and which divides the inner area of the tank body into a first water treatment area and a second water treatment area;
And a second partition wall attached to the partition wall to further partition the water treatment area,
A horizontally projecting protrusion is formed on one of the tank body and the second partition wall,
The other of the tank body and the second partition wall is formed with a recess that engages with the protrusion.
The second partition wall is configured to be supported by the partition wall and to be supported by the tank body by the engagement of the protrusion and the recess .
The tank body portion is configured by joining an upper tank structure and a lower tank structure,
The convex portion is provided on the second partition wall,
The recess is provided between the upper tank structure and the lower tank structure in the tank body,
The convex portion is disposed between the upper tank structure and the lower tank structure configured as the recessed portion, and is configured to be held between the upper tank structure and the lower tank structure. and water treatment and wherein the are. The water treatment apparatus according to claim 1 , wherein
The second partition wall is configured to form a third processing region surrounded by the partition wall and the second partition wall in the second processing region,
A water treatment apparatus characterized in that a disinfection area for disinfecting the water to be treated in the third treatment area to the outside of the water treatment apparatus is set in the third treatment area. The water treatment apparatus according to claim 2 , wherein
There is provided a discharge pipe which penetrates the second partition wall and the tank main body and discharges the treated water in the sterilization area to the outside of the water treatment apparatus,
The said convex part is provided in the downward direction of the said discharge pipe, The water treatment apparatus characterized by the above-mentioned. It is a water treatment apparatus of any one of Claims 1-3 , Comprising :
The section wall and the second section wall are configured to be attached to the tank main body as an assembly body in which the section wall and the second section wall are assembled together in advance. apparatus. It is a water treatment apparatus of any one of Claims 1-4 , Comprising :
In the first treatment area, an anaerobic treatment area for anaerobically treating the water to be treated is set.
The second treatment area is provided downstream of the first treatment area in the flow direction of the water to be treated in the water treatment area,
A water treatment apparatus characterized in that an aerobic treatment area for aerobically treating the water to be treated is set in the second treatment area.

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