JP4346985B2 - Middle water equipment, wastewater treatment equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a rational construction technique for a water recycling apparatus configured to treat inflow waste water and then discharge it as middle water to a middle water transfer destination.
[0002]
[Prior art]
  Of wastewater discharged from general households, etc., wastewater with relatively low pollutant concentration such as bathroom wastewater, washwater wastewater, laundry wastewater, etc. is purified, and the treated water is used as washing water for washing toilets and car wash. There is known a treatment device that is reused as water for water use or water for watering a garden (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
          JP 2002-242238 A
[0004]
[Problems to be solved by the invention]
  By the way, normally, bathroom wastewater, bathroom wastewater, and laundry wastewater are generated constantly and in large quantities, so in such a processing device, the amount of inflow wastewater flowing into the device is transferred to the destination of the middle water. The balance is greater than the amount of medium water. Therefore, it is necessary to constantly discharge the excess water to be treated flowing in the apparatus to the outside of the treatment apparatus. Moreover, in such a processing apparatus, since sludge is generated by the purification process and is accumulated in the apparatus, it is necessary to discharge solid matter such as sludge accumulated in the apparatus to the outside of the processing apparatus. In the above-mentioned Patent Document 1, there is a possibility of discharging discharged substances such as excess drainage and sludge in the apparatus to the outside of the apparatus. There is a high demand for further technology to be discharged.
  Then, this invention is made | formed in view of this point, In the middle water apparatus of the structure which processes the waste_water | drain which flowed in and discharges the treated water after a process to middle water transfer destination as middle water, It is an object of the present invention to provide a technique effective for rationally discharging the discharged materials to the outside of the middle water device.
[0005]
[Means for Solving the Problems]
  In order to solve the above problems, the present invention is configured as described in each claim.
  In addition, the invention which concerns on each of these claims is a technique which can be used suitably in the middle water apparatus of the structure which discharges to the middle water transfer destination as middle water after processing the inflow waste_water | drain.
[0006]
  The present inventionThe wastewater device treats the treated water flowing in from the inflow port and discharges the treated water as treated water to the middle water transfer destination. Among wastewater, wastewater with a relatively low pollutant concentration Accept and process. As the “drainage with a low pollutant concentration” in this specification, for example, bathroom drainage, wash drainage, laundry drainage and the like are typical, and the treated water is water called “sodium water”. Is preferably used. On the other hand, typical examples of “drainage with high pollutant concentration” in this specification include kitchen drainage and toilet drainage. Further, typical examples of the “destination for transporting middle water” include a flush water tank of a flush toilet, a car wash facility, a watering facility for a garden, and the like.
[0007]
  The middle water apparatus of this invention is equipped with the flow volume adjustment means and the discharge means at least.
  The flow rate adjusting means has a configuration capable of adjusting the flow rate by regulating the flow rate of the treated water that flows in the middle water device. For example, the structure which adjusts the flow volume advected from the upstream area | region of a flow volume adjustment means to a downstream area based on the water level of the downstream area | region of the said flow volume adjustment means is used. In the downstream area of the flow rate adjusting means, for example, a mechanism for disinfecting the treated water before being transferred to the destination of the intermediate water, a mechanism for temporarily storing the treated water, and the like are appropriately arranged.
[0008]
  The discharging means is a flow rate adjusting means andProvided between the inlet. This discharging means isA tubular tubular member that extends in the vertical direction while being immersed in water in the middle-water apparatus and has an inlet connected to the upper part thereof, a partition region in which water is partitioned by the tubular member, and a lower part of the tubular member An inlet portion provided in the tubular member, and an advection opening provided above the inlet portion and below the inflow portion of the tubular member, and allowing the advection of water from the partition region in the tubular member to the flow rate adjusting means side And an overflow opening provided above the advection opening and below the inflow opening in the tubular member, and connected to the overflow opening to allow the advection of water from the partition region in the tubular member to the outside of the water supply device. And an air supply means for supplying air from the inlet side to the partition region in the tubular member. And the water after the said foam was isolate | separated through the advancing opening, while the foam component in the to-be-processed water of a division area is isolate | separated as a foam by the upward air flow formed in a division area with the air supplied from the air supply means While advancing to the flow rate adjusting means side, the water containing the foam flows upward in the partition region by the air flow, stays in the vicinity of the overflow opening when the water level rises, and is discharged out of the intermediate water device through the overflow pipe.
  The “foam” referred to here includes not only one received in the form of foam from the inlet, but also one generated by applying an air flow to the wastewater containing the foam component once received from the inlet. In addition, “outside of the intermediate water device” in the present specification indicates a relationship when the intermediate water device is used as a reference. Therefore, for example, in the case where the waste water treatment apparatus including the middle water device is configured as one tank-like body, the region disposed outside the treatment area of the middle water device is “outside the middle water device” in the present invention. It corresponds to.
[0009]
  Usually, bathroom drainage, bathroom drainage, and laundry drainage are generated constantly and in large quantities, so the amount of drainage received into the central water system is more balanced than the amount of intermediate water transferred to the intermediate water destination. The water level in the upstream region of the flow rate adjusting unit is adjusted by adjusting the water level in the upstream region through the flow rate adjusting unit having the above configuration and then overflowing the water to be treated and the foam through the discharge unit and the overflow pipe having the above configuration. Can be maintained.
[0010]
  In the present invention, from the inlet,In tubular memberSince the wastewater that has flowed into the partition area is allowed to be transferred to the overflow pipe, a part of the wastewater that flows from the inlet can be short-circuited to the overflow pipe and discharged to the outside of the intermediate water treatment device by overflow. it can. Preferably,In tubular memberIn the partition region, the inlet and the overflow opening of the overflow pipe are arranged at positions close to each other. As a result, even if wastewater with high pollutant concentration (treated water) flows from the inflow port, the wastewater is discharged outside the middle water treatment device by overflowing it through the overflow pipe, and treated in the middle water device. An increase in load can be suppressed. In particular, in the present invention,Tubular memberSince the inlet and the overflow pipe are connected to the area partitioned by the, the waste water flowing in from the inlet overflows compared to the case where the inlet and the overflow pipe are simply provided at positions close to each other in the apparatus body. The structure which is easy to do can be implement | achieved.
  Moreover, in the present invention, it is rational because not only the water to be treated but also the foam can be discharged through the discharging means and the overflow pipe. Further, if the discharge means of the present invention is used, the configuration is simplified as compared with the case where the discharge means is configured using an air lift or submersible pump with various control equipment such as a water level detection sensor, timers, and a solenoid valve, The cost of the apparatus can be reduced.
[0011]
  Air supply meansIn tubular memberIn the partition region, an air flow toward the overflow opening of the overflow pipe is formed. Typically, the air supply means is configured using a blower serving as an air supply source, an air diffuser connected to the blower, and the like.
  When an air flow is formed by the air supply means, the foam component in the for-treatment water is separated as a foam by the bubbling action. The separated foam is caused by air flow.In tubular memberThis partition region flows to the overflow opening of the overflow pipe and stays in the vicinity thereof, and is discharged to the outside of the intermediate water apparatus together with the overflow water through the overflow pipe. Therefore,Tubular memberBy combining the air supply means with the air supply means, not only is the foam received from the inflow port discharged by overflow, but the air flow is positively imparted to the waste water containing the foam component once received from the inflow port. It is reasonable because it can be produced and the foam can be discharged by overflow. Thereby, the foam component density | concentration in the to-be-processed water advected in the inside water apparatus can be reduced.
[0012]
  Further aspects of the inventionWater supply equipmentThe above water supply equipmentIn the configuration ofTubular memberThe inlet portion is arranged in a solid material deposition region where the solid material is deposited.
  Due to the upward air flow formed in the compartment area by the air supplied from the air supply means, the solid matter in the solid deposit area flows upward along the compartment area together with water containing foam and stays in the vicinity of the overflow opening when the water level rises. It is discharged out of the middle water system through the overflow pipe. For example, sludge generated by aerobic treatment of organic pollutants in the water to be treated constitutes solid matter. The “solid matter” as used in the present specification is intended to include a wide range of sludge that accumulates or stays locally, as well as other solid matter similar to sludge. Such solid matter is separated by, for example, a solid-liquid separation mechanism, and is deposited in the solid matter deposition region. As this solid-liquid separation mechanism, there are a configuration using a sedimentation separation action of solids, a configuration using a separation action by a filter medium, and the like.
[0013]
  According to such a configuration of the present invention, not only the water to be treated and the foam is discharged, but also solids such as sludge (subjects) accumulated in the solid accumulation region are discharged to the overflow opening of the overflow pipe through the discharge means. It can be transferred and discharged out of the intermediate water device together with the overflow water. Such a solid is an unnecessary component when the treated water is used as intermediate water. In particular, in a middle-water apparatus in which the amount of solid matter such as sludge is relatively low, the water to be treated containing solid matter can be discharged by overflow without using a structure that pulls out the solid matter using pumps. The solid concentration can be kept low.
  Also, DIn the configuration provided with the air supply means, the air flow formed by the air supply means is a solid that accumulates in the solid matter accumulation region.objectIs effective to move the solid material to the overflow opening of the overflow pipe, and is effective for discharging the solid matter by overflow.
[0014]
  The present inventionThe wastewater treatment equipment ofEach of the above componentsIt is specified as a device with a water supply device. This waste water treatment apparatus has purification treatment means for receiving and purifying overflow water drained out of the intermediate water apparatus through the overflow pipe. As this purification treatment means, a mechanism for removing contaminants in the water to be treated, a mechanism for biologically treating the water to be treated (anaerobic treatment or aerobic treatment), and the like are preferably used. The treated water purified by the purification means is discharged out of the waste water treatment apparatus.
  Therefore, according to such a configuration, it is possible to realize a rational wastewater treatment technology that takes into account the treatment of wastewater and foam with a high concentration of pollutants discharged from the intermediate water apparatus, and even solid matter. .
[0015]
DETAILED DESCRIPTION OF THE INVENTION
  Below, one embodiment of the waste water treatment equipment of the present invention is described based on a drawing. First, a schematic configuration of the purification treatment tank 100 will be described with reference to FIG. Here, FIG. 1 is a diagram showing a schematic configuration of a purification treatment tank 100 which is an embodiment of the waste water treatment apparatus of the present invention.
[0016]
  In the present embodiment, a technique will be described in which two types of waste water A and B discharged from a general household are received by a treatment mechanism corresponding to each property, purified and drained.
  Here, the waste water A is waste water having a relatively low pollutant concentration, and is suitable for using the treated water as reused water (medium water). This drainage A is mainly composed of, for example, bathroom drainage, wash drainage, laundry drainage, and the like, and usually includes a foam component resulting from various types of cleaning drainage. This drainage A corresponds to “drainage” in the present invention.
  On the other hand, the waste water B is waste water having a relatively high pollutant concentration, and is generally difficult to use treated water as reused water (medium water). In general, the drainage B has a higher concentration load and a lower water load than the drainage A. The drainage B is mainly composed of, for example, kitchen drainage, toilet drainage, and the like, and usually includes manure resulting from toilet drainage.
[0017]
  As shown in FIG. 1, a purification treatment tank 100 as a waste water treatment apparatus in the present invention includes a main tank unit 103, a machine unit 104, and the like. The main tank unit 103 is configured to mount the first processing mechanism 101 and the second processing mechanism 102 in a single tank-shaped tank.
[0018]
  The first processing mechanism 101 includes a contact aeration chamber 110, a sedimentation chamber 120, a disinfection chamber 130, and a water storage chamber 140 in order from the upstream side (the left side in FIG. 1) corresponding to the order of the processing steps. The first treatment mechanism 101 receives the above-mentioned type of waste water A into the contact aeration chamber 110 and purifies it, and stores the treated water after the purification treatment as reclaimed water called “medium water”. It is configured to discharge from the chamber 140. In the purification process, discharged water including foam and sludge generated in the contact aeration chamber 110 is transferred to the contaminant removal tank 150 of the second processing mechanism 102 by overflow, as will be described later. ing. The first treatment mechanism 101 corresponds to the “middle water apparatus” in the present invention.
[0019]
  The second processing mechanism 102 corresponds to the order of the processing steps in order from the upstream side (left side in FIG. 1), the contaminant removal tank 150, the anaerobic filter bed tank 160, the carrier fluid biological filtration tank 170, the treatment water tank 180, the disinfection. A tank 190 is provided. In the second treatment mechanism 102, the waste water B and the discharged water (water containing foam and sludge) transferred from the contact aeration chamber 110 are received in the contaminant removal tank 150, purified, and purified. The configuration is such that the subsequent treated water is discharged from the disinfection tank 190. In the purification process, a part of the treated water in the treated water tank 180 is transferred to the contaminant removal tank 150 as circulating water during the aeration operation described later. Further, the backwash water in the carrier fluid biological filtration tank 170 is transferred to the contaminant removal tank 150 during the backwash operation described later. The second processing mechanism 102 constitutes a “purification processing unit” in the present invention.
[0020]
  The machine unit 104 includes a control device 300, a water supply device 310, a discharge pump 320, blowers 330 and 340, and the like.
  The water supply device 310 has a configuration capable of supplying “water” of the water supply to the water storage chamber 140 of the first processing mechanism 101. The discharge pump 320 pressurizes the treated water (middle water) extracted from the water storage chamber 140 of the first treatment mechanism 101, and sprinkles water in a “middle water transfer destination” such as a flush water tank of a flush toilet, a car wash facility, and a garden. It has a configuration that can be transported toward equipment. The discharge pump 320 can be configured using an air lift pump, a submersible pump, or the like. The blower 330 has a configuration capable of supplying aeration / foam separation air to the first processing mechanism 101. The blower 340 has a configuration capable of supplying aeration / transfer air and backwash / transfer air to the second processing mechanism 102. The control device 300 is configured to control operation of the water supply device 310, the discharge pump 320, the blowers 330 and 340, and the like.
[0021]
  Here, specific configurations and operations of the first processing mechanism 101 and the second processing mechanism 102 mounted on the main tank unit 103 will be described in detail. First, a specific configuration and operation of the first processing mechanism 101 will be described with reference to FIGS. FIG. 2 is a diagram showing a configuration of the first processing mechanism 101 in FIG. FIG. 3 is a diagram showing a configuration of the flow rate adjusting device 124 in FIG. 2, and shows a state where the water level of the water storage chamber 140 is low. FIG. 4 is also a diagram showing the configuration of the flow rate adjusting device 124 in FIG. 2, and shows a state where the water level of the water storage chamber 140 is high.
[0022]
  As shown in FIG. 2, the waste water A received by the first treatment mechanism 101 from the inflow port 101 a first flows into the contact aeration chamber 110. The inflow port 101a corresponds to the “inlet” in the present invention.
  The contact aeration chamber 110 has a contact material filling section 112, and the contact material filling section 112 is filled with a predetermined amount of contact material C1 to which aerobic microorganisms that aerobically treat (oxidize) organic pollutants adhere. ing. The treated water treated in the contact aeration chamber 110 is transferred to the sedimentation chamber 120 through an opening 114 formed in the lower part of the partition wall.
[0023]
  The contact aeration chamber 110 includes a discharge device 200 upstream of the contact material filling unit 112 (upstream of the contact aeration chamber 110). The discharge device 200 corresponds to “discharge means” in the present invention.
  The discharge device 200 includes a tubular member 202 that extends in the vertical direction (vertical direction in FIG. 2) while being immersed in the water to be treated in the contact aeration chamber 110. The tubular member 202 has a circular or square cross-sectional shape. The tubular member 202 has a configuration in which an inlet portion 202a of the tubular member 202 is opened and a top portion is closed. Therefore, by immersing this tubular member 202 in the water to be treated, a partition region 204 (space) in which the water to be treated is partitioned is formed, and a water-sealed state is formed. The inlet portion 202a of the tubular member 202 corresponds to the “inlet portion” in the present invention, and the partition region 204 corresponds to the “partition region” in the present invention.
[0024]
  The tubular member 202 extends to the bottom region 116 of the contact aeration chamber 110, and the inlet 202 a of the tubular member 202 is disposed so as to face the bottom region 116. This bottom region 116 is a region where solid matter such as sludge generated by an aeration process described later is deposited, and corresponds to a “solid matter deposition region” in the present invention.
[0025]
  In addition, an overflow opening 208 a of the overflow pipe 208 is formed in the upper part, which is the outlet part 202 b of the tubular member 202. The overflow pipe 208 corresponds to the “overflow pipe” in the present invention, and the overflow opening 208a corresponds to the “overflow opening” in the present invention.
  The overflow opening 208a of the overflow pipe 208 is disposed above the advection opening 206, and allows the water to be treated to overflow when the water level in the contact aeration chamber 110 rises. The overflow opening 208a is located near the inflow port 101a that receives the drainage A, and is disposed slightly below the inflow port 101a. That is, in the present embodiment, the inflow port 101 a and the overflow pipe 208 are connected to the partition region 204 of the tubular member 202. With such a configuration, the drainage A that has flowed into the partition region 204 of the tubular member 202 from the inlet 101a is allowed to be transferred to the overflow opening 208a.
[0026]
  In the present embodiment, the air diffuser 210 is provided in the partition region 204 of the tubular member 202 and below the partition region 204. The air diffuser 210 is connected to the blower 330 via an air supply pipe 331. By activating the blower 330, aeration / foam separation is performed from a plurality of air supply holes (not shown) to the partition region 204. Air (a gas containing oxygen) is supplied. The air diffuser 210, the blower 330, the air supply pipe 331 and the like constitute an “air supply means” in the present invention.
[0027]
  In such a configuration of the discharge device 200, when a predetermined amount of aeration / foam separation air is supplied from the air diffuser 210, the partition region 204 of the tubular member 202 is supplied to the outlet portion 202 b of the tubular member 202. Thus, an air flow (upward flow) is formed. At this time, the bubbling action of the aeration / foam separation air causes the foam component in the water to be treated to become foam, and this foam stays in the vicinity of the liquid interface (in the vicinity of the overflow opening 208 a) of the outlet portion 202 b in the tubular member 202.
[0028]
  In addition, a clockwise swirling flow indicated by an arrow in FIG. 2 is formed in the contact aeration chamber 110 by the action of the gas flow of the aeration / foam separating air by the diffuser 210. At this time, the organic pollutant in the water to be treated is aerated by air when it flows down the contact material filling portion 112, thereby solid matter such as SS (suspended solid) (hereinafter referred to as “sludge (peeled sludge)”. ") Occurs. The generated sludge accumulates in the bottom region 116 of the contact aeration chamber 110 and swirls between the contact material filling portion 112 and the partition region 204 of the tubular member 202 by the swirl flow. That is, an upward flow of the water to be treated is formed in the partition region 204 in the tubular member 202, and a downward flow of the water to be treated is formed in the contact material filling portion 112.
[0029]
  As described above, in the present embodiment, the air supply means such as the air diffuser 210 that supplies the air for aeration / foam separation generates the foam from the water to be treated and separates the foam from the water side. The contact material filling unit 112 has a plurality of functions such as a swirl flow for aeration treatment of the water to be treated and a function of swirling the sludge generated in the contact material filling unit 112 in the contact aeration chamber 110. .
[0030]
  Further, in such a configuration of the discharge device 200, the drainage A received from the inflow port 101 a flows into the partition region 204 in the tubular member 202 and flows to the contact material filling unit 112 side through the advancing opening 206. On the other hand, the water in which the water level in the contact aeration chamber 110 has risen above the overflow opening 208a and overflowed is passed through the overflow pipe 208 and the contaminant removal tank 150 of the second processing mechanism 102 (the “medium water device for the first processing mechanism 101”). To the area corresponding to “outside”). At this time, as described above, the bubbles staying in the vicinity of the liquid interface (in the vicinity of the overflow opening 208a) of the outlet portion 202b in the tubular member 202 and the partition region 204 of the tubular member 202 accumulated in the contact material filling portion 112 by the swirl flow. The sludge transferred to is efficiently discharged into the contaminant removal tank 150 together with the overflow water discharged from the overflow opening 208a. In particular, in this embodiment, since the tubular member 202 is immersed in the water to be treated, the tubular member 202 enters a water-sealed state, and a gas flow toward the overflow pipe 208 is formed, so that the vicinity of the liquid interface of the outlet portion 202b (overflow opening). The foam staying in the vicinity of 208a is quickly discharged through the overflow pipe 208 by this gas flow.
[0031]
  If wastewater with a high concentration of pollutants is received from the inlet 101a, the processing load in the first processing mechanism 101 may increase, but overflows to a position close to the inlet 101a as in the present embodiment. According to the configuration in which the opening 208a is arranged, a part of the waste water flowing from the inflow port 101a can be short-circuited to the overflow opening 208a and discharged through the overflow pipe 208. As a result, even when wastewater with a high pollutant concentration flows from the inflow port 101a, an increase in processing load in the first processing mechanism 101 can be suppressed by overflowing the wastewater from the overflow opening 208a. . In particular, in the present embodiment, the inflow port 101a and the overflow opening 208a are provided in the partition region 204 partitioned by the tubular member 202, and the wastewater flowing in from the inflow port 101a is likely to overflow. It is more effective to discharge wastewater with high concentration.
[0032]
  Normally, the configuration such as the overflow pipe 208 is used as an emergency response means, but in this embodiment, the upstream region (contact aeration chamber 110 and sedimentation chamber 120) by the flow rate regulating action of the flow rate adjusting device 124 described later. When the water level is adjusted, the overflow pipe 208 is used. That is, when the water level in the contact aeration chamber 110 reaches the overflow opening 208 a by the flow rate adjusting device 124, the water in the contact aeration chamber 110 flows through the overflow pipe 208 by the overflow and is transferred to the contaminant removal tank 150. .
[0033]
  The sedimentation chamber 120 includes an inclined portion 122 whose bottom portion is inclined, and the inclined portion 122 is deeper on the side of the contact aeration chamber 110. The inclined portion 122 has a function of guiding the sludge generated in the contact aeration chamber 110 and transferred to the sedimentation chamber 120 through the opening 114 to the bottom of the contact aeration chamber 110.
  The water in the sedimentation chamber 120 is transferred to the disinfection chamber 130 after the flow rate is adjusted via the flow rate adjusting device 124.
[0034]
  The disinfecting chamber 130 includes a disinfectant injecting device 132, and the disinfectant injecting device 132 performs disinfection processing of water flowing from the sedimentation chamber 120, and the water after disinfection is transferred to the water storage chamber 140. ing.
[0035]
  The water storage chamber 140 is provided with a water supply device 310, a discharge pump 320, and the like. The water supply device 310 has a function of supplying “water” from the water supply according to the water level of the water storage chamber 140. The water supply device 310 includes a configuration using a ball tap and a configuration using a water level sensor. The water (middle water) stored in the water storage chamber 140 is transferred to a destination of intermediate water, such as a flush water tank of a flush toilet, a car wash facility, a water spray facility in a garden or the like, via a discharge pump 320. The discharge pump 320 is configured using an air lift pump, a submersible pump, or the like.
[0036]
  Here, the detailed configuration of the flow rate adjusting device 124 will be described with reference to FIGS. 3 and 4. The flow rate adjusting device 124 corresponds to the “flow rate adjusting means” in the present invention.
  As shown in FIG. 3, the flow rate adjusting device 124 includes a flow rate adjusting pipe 125, a float member 126, a connecting rod member 127, and the like. The flow rate adjusting pipe 125 is a member that communicates between the sedimentation chamber 120 and the disinfection chamber 130, and has a bellows-like flexible portion 125a. The float member 126 is a member that moves up and down according to the water level of the water storage chamber 140. The connecting rod member 127 is a member for connecting the flow rate adjusting pipe 125 and the float member 126, and is configured to support the flow rate adjusting pipe 125 from below.
[0037]
  Therefore, when the water level of the water storage chamber 140 is in the state shown in FIG. 3, for example, the connecting rod member 127 pushes the flow rate adjustment pipe 125 downward. Thereby, the flexible part 125a is bent downward, and the discharge port is adjusted so as to face obliquely downward. In this state, the degree to which the flow of treated water flowing through the flow rate adjusting pipe 125 is regulated is relaxed, and the amount of transferred water to the disinfection chamber 130 is adjusted to be increased. At this time, the water level in the contact aeration chamber 110 is lower than, for example, the overflow pipe 208, and therefore, discharged water containing sludge is not discharged. At this time, the foam staying in the vicinity of the liquid interface (near the overflow opening 208a) of the outlet portion 202b of the tubular member 202 is caused to change in the water level of the contact aeration chamber 110 due to the gas flow toward the overflow pipe 208. Regardless, it is discharged to the overflow pipe 208 side.
[0038]
  On the other hand, when the water level in the water storage chamber 140 rises from the state shown in FIG. 3, the connecting rod member 127 pushes the flow rate adjustment pipe 125 upward. As a result, as shown in FIG. 4, the flexible portion 125a is bent upward and the discharge port is adjusted to face obliquely upward. In this state, the degree to which the flow of treated water flowing through the flow rate adjusting pipe 125 is regulated is increased, and the transfer flow rate to the sterilization chamber 130 is adjusted in the direction of decreasing. At this time, the water level of the contact aeration chamber 110 becomes higher than that of, for example, the overflow pipe 208, and thus overflow water containing sludge and foam treatment products is discharged from the contact aeration chamber 110 through the overflow pipe 208.
[0039]
  Next, a specific configuration and operation of the second processing mechanism 102 will be described with reference to FIG. Here, FIG. 5 is a diagram showing a configuration of the second processing mechanism 102 in FIG.
  As shown in FIG. 5, the drained water B and the discharged water received through the overflow pipe 208 of the discharge device 200 first flow into the contaminant removal tank 150. The contaminant removal tank 150 includes baffle members 151 and 152, and separates and removes contaminants contained in the water to be treated, that is, large solids and oils and fats, by the baffle action of the baffle members 151 and 152 and the like. The treated water treated in the contaminant removal tank 150 is transferred to the anaerobic filter bed tank 160 through the opening of the partition wall by the principle of extrusion flow.
[0040]
  The anaerobic filter bed tank 160 has a filter bed 162, and the filter bed 162 is filled with a predetermined amount of filter medium C2 to which anaerobic microorganisms for anaerobic treatment (reduction) of organic pollutants are attached. Therefore, the organic pollutant in the water to be treated is anaerobically treated by anaerobic microorganisms when the filter medium C2 is flowed down in the direction of the arrow in FIG. The treated water treated in the anaerobic filter bed tank 160 is transferred to the carrier fluid biological filtration tank 170 through the opening of the partition wall by the principle of extrusion flow.
[0041]
  In the carrier flow biological filtration tank 170, a carrier filling part 174 is formed between the upper porous member 171 and the lower porous member 172, and a predetermined amount of granular carrier C3 can flow in the tank in the carrier filling part 174. Filled to the extent. These porous members 171 and 172 are configured to allow the movement of the treated water but prevent the movement of the granular carrier C3. The granular carrier C3 is formed in, for example, a granular hollow cylindrical shape. Aerobic microorganisms that aerobically treat (oxidize) organic pollutants adhere to the granular carrier C3. Therefore, the organic pollutant in the water to be treated is aerobically treated by aerobic microorganisms when the carrier filling portion 174 is lowered in the direction of the arrow in FIG. As the material for the granular carrier C3, for example, inorganic carriers such as perlite, shirasu balloon, foamed concrete, activated carbon, porous ceramic, porous glass, and synthetic resin carriers such as polyethylene, polypropylene, polyvinyl chloride, and polyurethane are widely used. be able to.
[0042]
  The carrier fluid biological filtration tank 170 is provided with an air diffuser 175 and a backwash device 176 that supply air to the treated water in the tank via the blower 340. The air diffuser 175 is used at the time of air diffused operation described later, and the backwash device 176 is used at the time of backwashed operation described later. The air diffuser 175 and the backwash device 176 have a plurality of air supply holes for supplying air. The air diffuser 175 is provided above the backwash device 176 in the tank.
[0043]
  The treated water tank 180 is provided with a first air lift pump 177 and a second air lift pump 187 having substantially the same configuration. The 1st air lift pump 177 is used at the time of the backwash operation mentioned later, and the 2nd air lift pump 187 is used at the time of the aeration operation mentioned below.
[0044]
  The first air lift pump 177 has an end on the suction side immersed in the bottom of the carrier flow biological filtration tank 170, an end on the discharge side disposed above the contaminant removal tank 150, and an air supply pipe 341 on the suction pipe. Is connected. Accordingly, when air is supplied to the air supply pipe 341 via the blower 340 and the first air lift pump 177 is activated, water at the bottom of the carrier fluid biological filtration tank 170 is sucked and directed to the contaminant removal tank 150 as backwash water. Will be discharged. On the other hand, the second air lift pump 187 has a suction side end immersed in the bottom of the treated water tank 180, a discharge side end disposed above the contaminant removal tank 150, and an air supply pipe 342 in the suction pipe. It is connected. Accordingly, when air is supplied to the air supply pipe 342 via the blower 340 and the second air lift pump 187 is activated, water at the bottom of the treatment water tank 180 is sucked and discharged as circulating water toward the contaminant removal tank 150. It will be.
  Note that the air supply amount supplied to the first air lift pump 177 is set to be larger than the air supply amount supplied to the second air lift pump 187. Thereby, the transfer amount of backwash water can be made larger than the transfer amount of circulating water, and the backflow operation of the carrier fluid biological filtration tank 170 can be performed in a shorter time.
[0045]
  The disinfecting tank 190 includes a disinfectant injecting device 192, and the disinfectant injecting device 192 performs disinfecting processing water flowing from the processing water tank 180. The treated water after being sterilized in the sterilization tank 190 is discharged to the outside of the second processing mechanism 102, that is, outside the purification processing apparatus 100 through the outflow pipe 102a.
[0046]
  In the aeration operation of the carrier fluid biological filtration tank 170, a predetermined amount of air is supplied from the aeration device 175 into the tank. As a result, an aerobic treatment region (biological treatment region) is formed above the diffuser 175, and a filtration treatment region is formed below the diffuser 175. In the aerobic treatment region, aerobic treatment (oxidation) of organic pollutants is performed by aerobic microorganisms to which air is applied, while in the filtration treatment region, solid matter such as sludge generated by the aerobic treatment is removed. Captured by the granular carrier C3. At this time, the granular carrier C3 in the aerobic treatment region flows in the tank together with the treated water by the air flow of the air supplied from the air diffuser 175. Thereby, the uniform process of the treated water in a tank will be performed. In this aeration operation, as described above, the second air lift pump 187 is operated to circulate the circulating water.
[0047]
  Further, in the backwash operation of the carrier fluid biological filtration tank 170, a predetermined amount of air is supplied from the backwash device 176 into the tank. For example, it is set so that more air is supplied than during the diffused operation. Thereby, the whole granular support | carrier C3 of the support | carrier filling part 174 (aerobic process area | region and filtration process area | region) flows the inside of a tank with a treated water. Thereby, solid substances, such as sludge trapped by the granular support | carrier C3, peel. In this backwash operation, as described above, the first air lift pump 177 is operated, and water containing solids such as sludge is transferred to the contaminant removal tank 150 as backwash water.
[0048]
  As described above, according to the present embodiment, it is possible to realize a technique effective for rationally discharging the discharged material in the first processing mechanism 101 to the outside of the first processing mechanism 101.
  That is, the discharging means 200 of the present embodiment is a processing product (subject to be discharged) such as foam and sludge generated in the contact aeration chamber 110, and further part of the waste water flowing from the inlet 101a (subject to be discharged). Can be discharged together through the overflow pipe 208 connected to the partition region 204 of the tubular member 202, and it is rational because it has a simple configuration that does not use functions such as an air lift and a submersible pump. In particular, in the first treatment mechanism 101 (medium water device) in which the amount of sludge generated is relatively low, the water to be treated containing sludge is discharged due to overflow without using a configuration for extracting sludge using pumps. As a result, the concentration of sludge can be kept low.
  Further, if the discharging means 200 of the present embodiment is used, the configuration is compared with the case where the draining means is configured using an air lift or submersible pump with various control equipment such as a water level detection sensor, timers, and electromagnetic valves. It becomes possible to simplify and reduce the cost of the apparatus.
  Further, the purification treatment tank 100 of the present embodiment has a rational function of further purifying the treatment product such as solid matter and foam produced in the first treatment mechanism 101 in the second treatment mechanism 102. In addition, since the first processing mechanism 101 and the second processing mechanism 102 are configured to be accommodated in the main tank portion 103, it is effective in reducing the size of the purification processing tank 100.
[0049]
  [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.
[0050]
  Although the case where the discharge device 200 is provided in the uppermost stream in the contact aeration chamber 110 has been described in the above embodiment, the discharge device 200 can be arranged at various locations in the upstream region of the flow rate adjustment device 124.
[0051]
  In the above embodiment, the case where the inlet portion 202a of the tubular member 202 is disposed in the bottom region 116 of the contact aeration chamber 110 has been described. However, the length of the tubular member 202 is shortened and the inlet portion 202a is placed at the bottom portion. A structure arranged above the region 116 can also be used. Also with such a configuration, the solid matter in the bottom region 116 can be transferred toward the overflow opening 208a by the air flow by the air diffuser 210.
[0052]
  Moreover, in the said embodiment, although the case where the diffuser 210 was provided in the division area 204 of the tubular member 202 in the downward direction of the said division area 204 was described, the exit part is provided in the division area 204 from the inlet part 202a to the outlet part. If it is possible to form an upward flow of the water to be treated toward 202b, a configuration in which the air diffuser 210 is disposed outside the partition region 204 can also be used.
[0053]
  Moreover, in the said embodiment, although the inflow port 101a was connected above the overflow opening 208a in the tubular member 202, the waste_water | drain which flowed in from this inflow port 101a described the structure which flows in into the division area | region 204 in the tubular member 202. The drainage can also be configured to flow out of the tubular member 202 through the inflow port 101a.
[0054]
【The invention's effect】
  As described above, according to the present invention, in the middle water apparatus configured to treat the discharged wastewater and discharge the treated water after treatment to the middle water transfer destination as middle water, the discharged material in the middle water apparatus is discharged. A technology effective for rational discharge to the outside of the water supply system was realized.
[Brief description of the drawings]
FIG. 1 is a diagram showing a schematic configuration of a purification treatment tank 100 which is an embodiment of a waste water treatment apparatus of the present invention.
FIG. 2 is a diagram illustrating a configuration of a first processing mechanism 101 in FIG.
FIG. 3 is a diagram showing the configuration of the flow rate adjusting device 124 in FIG. 2, and shows a state in which the water level in the water storage chamber 140 is low.
4 is a diagram showing a configuration of the flow rate adjusting device 124 in FIG. 2, and shows a state in which the water level of the water storage chamber 140 is high. FIG.
FIG. 5 is a diagram illustrating a configuration of a second processing mechanism 102 in FIG. 1;
[Explanation of symbols]
  100 ... Purification tank (waste water treatment equipment)
  101 ... 1st processing mechanism (medium water apparatus)
  101a ... Inlet
  102 ... Second processing mechanism (purification processing means)
  102a ... Outflow pipe
  103 ... Main tank
  104 ... Machine part
  110 ... Contact aeration chamber
  120 ... sedimentation chamber
  124 ... Flow rate adjusting device (flow rate adjusting means)
  130 ... Disinfection room
  140 ... Reservoir
  150 ... Foreign matter removal tank
  160 ... Anaerobic filter bed tank
  170 ... carrier fluid biological filtration tank
  180 ... treated water tank
  190 ... Disinfection tank
  200: Discharging device (discharging means)
  202 ... Tubular member
  202a ... Entrance
  202b ... exit part
  204 ... division area
  206 ... advection opening
  208 ... Overflow pipe
  208a ... Overflow opening
  210 ... Air diffuser

Claims (3)

A wastewater device configured to discharge wastewater that has flowed from an inflow port to a wastewater transfer destination as treated water,
A flow rate adjusting means capable of adjusting the flow rate of the water to be treated that flows in the middle water device, and a discharge means provided between the flow rate adjusting means and the inlet ,
The discharging means is
A tubular member extending in the vertical direction in a state immersed in the water in the intermediate water device, and having the inflow port connected to the upper part thereof;
A partition region in which water is partitioned by the tubular member;
An inlet provided at a lower portion of the tubular member;
An advection opening provided above the inlet portion and below the inflow port of the tubular member, and allowing advection of water from the partition region in the tubular member to the flow rate adjusting means side;
An overflow opening provided above the advection opening and below the inflow opening in the tubular member;
An overflow pipe connected to the overflow opening and allowing advection of water from the partition region in the tubular member to the outside of the intermediate water device;
An air supply means for supplying air from the inlet side to the partition region in the tubular member;
Water after the foam is separated while the foam component in the water to be treated in the partition area is separated as foam by the upward air flow formed in the partition area by the air supplied from the air supply means. While flowing to the flow rate adjusting means side through the opening, the water containing the foam flows upward in the partition region by the air flow, stays in the vicinity of the overflow opening when the water level rises, and passes through the overflow pipe to the outside of the intermediate water device A middle water device characterized by being discharged into the water. It is a middle water apparatus of Claim 1, Comprising:
Said discharge means, Ri configuration der to said inlet portion of said tubular member is disposed in the solid deposition region solids in the water to be treated is deposited,
Due to the upward air flow formed in the partition region by the air supplied from the air supply means, the solids in the solid accumulation region flow upward in the partition region together with the water containing the foam, and the overflow occurs when the water level rises A middle water apparatus that stays in the vicinity of an opening and is discharged out of the middle water apparatus through the overflow pipe . A wastewater treatment apparatus comprising the intermediate water apparatus according to claim 1 or 2 ,
It has a purification treatment means for receiving and purifying the overflow water discharged out of the intermediate water apparatus through the overflow pipe, and is configured to discharge the treated water purified by the purification treatment means to the outside of the waste water treatment apparatus. A wastewater treatment apparatus characterized by comprising:

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