JP6057453B2 - Liquid processing equipment - Google Patents

Description

  The present invention relates to a liquid processing apparatus.

  Japanese Patent Application Laid-Open No. 2012-050948 describes a wastewater treatment apparatus having pH adjusting means for adjusting pH for acidic wastewater. In the said pH adjustment means, pH is adjusted by adding the drainage alkali metal hydroxide to the waste water.

JP2012-050948A

  By the way, in the waste water treatment apparatus, the control unit receives the pH value of the waste water from the pH meter, and based on the pH value, the control unit opens and closes a valve provided in the adding means, and is added to the waste water. The amount of sodium hydroxide solution is adjusted. However, in the wastewater treatment apparatus, in order to control the amount of the aqueous solution added to the wastewater by the adding means, it is necessary to provide a measuring instrument and a control unit, and the number of parts of the wastewater treatment apparatus becomes large and complicated. Therefore, the present invention has been made in view of the above problems, and provides a liquid processing apparatus capable of adding a chemical to a liquid without using a device such as a control unit for the liquid processing apparatus. With the goal.

In order to solve the above problems, according to a preferred embodiment of the liquid processing apparatus of the present invention, a tank body in which a storage area capable of storing a liquid is formed, a medicine is contained, and the liquid flowing into the tank body is used. On the other hand, a liquid processing apparatus is provided that includes a chemical addition apparatus that adds a chemical component, and that processes the liquid that has flowed into the tank body. The tank body has a tank upper part provided with a manhole part. The drug is a substance having deliquescence, and the drug addition device has a lower opening provided in the lower part, and the stored drug is deliquesced by the outside air flowing in through the lower opening in the drug addition device. The generated chemical solution is configured to be added to the liquid stored in the storage region.

  According to the said structure, the chemical | medical solution with which the chemical | medical agent became aqueous solution by deliquescence can be added quantitatively with respect to a liquid. This eliminates the need for a control means for controlling the addition amount of the drug, simplifying the configuration of the liquid processing apparatus and reducing the cost.

Furthermore, in the liquid processing apparatus according to this embodiment , the chemical addition device is an area above the storage area in the vertical direction, and is disposed in a space formed between the water surface of the liquid flowing into the tank body and the tank upper part. Has been.

  According to the said structure, a chemical | medical solution can be added to the liquid stored in the storage area | region from the chemical | medical agent addition apparatus using gravity. That is, it is not necessary to install a special device for adding a drug or controlling the amount of the drug added.

Furthermore, according to the liquid processing apparatus according to the present embodiment, the tank body has an electrolytic treatment tank that elutes metal ions from the liquid, and the electrolytic treatment tank is disposed at the lower part of the chemical addition apparatus. . Furthermore, the electrolytic treatment tank constitutes a phosphorus removal mechanism that reacts metal ions with phosphorus in the liquid to remove phosphorus from the liquid.

According to the said structure, a chemical | medical solution can be added directly to the electrolytic processing apparatus which requires the component of a chemical | medical agent. This is particularly useful when the electrolytic processing apparatus constitutes a phosphorus removal mechanism.

  According to the further form of the liquid processing apparatus which concerns on this invention, while the tank main body has a some processing tank, it is comprised so that the liquid may circulate through the said some processing tank. And the chemical | medical agent addition apparatus is arrange | positioned in any processing tank among several processing tanks.

  According to this embodiment, since the liquid processing apparatus is configured so that the liquid circulates through the plurality of processing tanks, the chemical addition apparatus supplies the chemical liquid to the liquid stored in any of the processing tanks. By adding, the component of a chemical | medical agent can be added to the whole processing tank.

According to the further form of the liquid processing apparatus which concerns on this invention, a chemical | medical agent addition apparatus produces | generates a liquefaction per unit time by changing the area of the part which a chemical | medical agent contacts the external air of the said chemical | medical agent addition apparatus. It is comprised so that a chemical | medical solution amount may change.

  According to the present embodiment, the amount of the chemical solution can be changed by changing the area where the drug and the air outside the drug addition device (outside air) come into contact, whereby the amount of the chemical solution added to the liquid per unit time, that is, The amount of the drug component can be adjusted.

  According to the further form of the liquid processing apparatus which concerns on this invention, a chemical | medical agent is calcium chloride or magnesium chloride. Moreover, the chemical | medical agent addition apparatus accommodates the mixture with which the salt containing a chemical | medical agent and iron was mixed, and the salt containing iron is added to a liquid when the chemical | medical agent in a mixture deliquesces. The salt containing iron preferably includes a substance having deliquescence such as iron (III) chloride.

  According to this embodiment, iron ions can be supplied by directly adding iron to the liquid by utilizing the deliquescence of the drug.

According to the further form of the liquid processing apparatus which concerns on this invention, the chemical | medical agent addition apparatus has a main-body part and an opening adjustment member. The main body has a first end and a second end that is the end opposite to the first end, and is configured to be able to contain a medicine. The first end has a lower opening . The opening adjusting portion has an opening adjusting portion opening and is rotatably attached to the first end portion of the main body portion. Further, the deliquescent drug is dripped into the water to be treated through the lower opening area and the opening adjustment area opening area that are overlapped by rotating the main body and the opening adjustment area relatively. Is done.

According to the further form of the liquid processing apparatus which concerns on this invention, the chemical | medical agent addition apparatus has a cap. The second end has an upper opening . The cap is configured to be detachable from the second end opening.

  According to the further form of the liquid processing apparatus which concerns on this invention, the chemical | medical agent addition apparatus has a chemical | medical agent container. The drug container includes a storage bag that allows gas and liquid to pass through, and a drug stored in the storage bag. The body portion is configured to receive a drug container.

  ADVANTAGE OF THE INVENTION According to this invention, the liquid processing apparatus which can add a chemical | medical agent to a liquid can be provided, without using apparatuses, such as a control part, with respect to a liquid processing apparatus.

It is a figure which shows the outline | summary of the water treatment apparatus 100 which concerns on this invention. 4 is a perspective view of an electrode device 141 of a phosphorus removal device 140. FIG. 3 is a side sectional view of the adding device 135. FIG. It is a sectional side view of the addition apparatus 135 which accommodated the chemical | medical agent container 139. FIG. 6 is a bottom view of the adding device 135. FIG. FIG. 6 is a bottom view of the adding device 135 showing a state in which the opening adjusting member 138 is rotated in FIG. 5. It is a figure which shows the outline | summary of the water treatment apparatus 100 which concerns on the modification of this invention.

  Below, the structure of the water treatment apparatus of one Embodiment in this invention is demonstrated based on drawing. Note that this embodiment describes a water treatment apparatus that receives and treats raw water (also referred to as “drainage” or “treated water”) discharged from ordinary households, apartment houses, etc., into a water treatment area. .

  An outline of a water treatment apparatus 100 according to the present invention is shown in FIG. As shown in FIG. 1, the water treatment apparatus 100 of the present embodiment has a treatment tank body 101 as a casing of the water treatment apparatus 100. The water treatment device 100 is a water treatment device configured to treat domestic wastewater (living sewage) together with manure. This processing tank main body 101 is the implementation structural example corresponding to the "tank main body" in this invention.

  The processing tank body 101 is typically formed into a tank shape by abutting an upper tank and a lower tank, both of which are formed in a half-cracked shape. 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 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 for the treated water to be led out from the internal space of the treatment tank main body 101. The manhole portion 104 is configured as a portion where manholes for tank entry, internal inspection, and cleaning are formed.

  In the present specification, the manhole part 104 side of the treatment tank body 101 is defined as the tank upper part or the tank upper part, and the opposite side is defined as the tank lower part, the tank lower part or the tank bottom part. Further, the inflow pipe 102 side of the processing tank body 101 is defined as the upstream side, and the outflow pipe 103 side is defined as the downstream side. In addition, a direction (typically, a direction perpendicular to the horizontal direction) that extends along the extending surface of the manhole portion 104 (also referred to as “tank left / right direction”) is a vertical direction (also referred to as “tank up / down direction”). It is prescribed.

  In the internal space of the treatment tank main body 101, a water storage area or a water treatment area is formed in which the raw water received through the inflow pipe 102 is stored and a predetermined water treatment is performed. In this water storage area, an anaerobic filter bed tank 110, a carrier fluidized biological filtration tank 130, a treated water tank 150, and a disinfection tank 170 are accommodated as the water treatment mechanism 101a. In this configuration, wastewater that has flowed into the treatment tank body 101 through the inflow pipe 102 is sequentially buried in the anaerobic filter bed tank 110, the carrier fluid biological filtration tank 130, the treatment water tank 150, and the disinfection tank 170, and the treated water. Flows out of the processing tank main body 101 through the outflow pipe 103. In this case, the water treatment apparatus 100 may be configured as a purification tank that discharges the water that has flowed out of the treatment tank body 101 as it is, or the water that has flowed out of the treatment tank body 101 is used as a toilet or water for watering. It may be configured as a water reuse device to be reused. The anaerobic filter bed tank 110 and the carrier fluid biological filtration tank 130 are an implementation configuration example corresponding to “a plurality of treatment tanks” in the present invention.

  The anaerobic filter bed tank 110 constitutes the most upstream (first chamber) treatment area of the water treatment mechanism 101a. The anaerobic filter bed tank 110 is configured as a treatment tank having a function of anaerobically treating (reducing) organic pollutants in the treated water and a function of filtering treated water. The anaerobic filter bed tank 110 includes an anaerobic filter bed tank 111 arranged in the uppermost stream of the anaerobic filter bed tank 110 and an anaerobic filter bed tank arranged immediately downstream of the anaerobic filter bed tank 111. Two chambers 112 are included. In the anaerobic filter bed 1 chamber 111, an anaerobic filter bed 113 filled with a predetermined amount of anaerobic filter medium C1 to which anaerobic microorganisms for anaerobically treating organic pollutants is provided. Typically, a flat filter medium can be suitably used as the anaerobic filter medium C1. Similarly, the anaerobic filter bed 2 chamber 112 is provided with an anaerobic filter bed 116 filled with a predetermined amount of anaerobic filter medium C2. Typically, a skeleton-like spherical filter medium can be suitably used as the anaerobic filter medium C2. Each of these anaerobic filter beds 113 and 116 is subjected to anaerobic treatment and filtration treatment of the water to be treated, whereby BOD is reduced and sludge is removed in two stages.

  An advection passage 114 formed of a plate-like member is provided between the anaerobic filter bed tank 1 111 and the anaerobic filter bed tank 2 112. According to this configuration, the water that has flowed downward through the anaerobic filter bed 113 of the anaerobic filter bed chamber 111 is pushed upward through the advection passage 114 according to the principle of flow, and then flows through the opening 115 of the advection passage 114. It flows into the anaerobic filter bed tank 2 chamber 112.

  Between the anaerobic filter bed 2 chamber 112 and the carrier flow biological filtration tank 130, an advection passage 117 and an opening 118 by an air-driven air lift pump are provided. The advection passage 117 draws water flowing downward through the anaerobic filter bed 116 of the anaerobic filter bed 2 chamber 112 from the suction port 117a by the pumping force of the air lift pump and discharges it from the discharge port 117b, thereby carrying the carrier fluid biological filtration. The function to transfer to the tank 130 is fulfilled. The opening 118 is configured as an opening that allows a part of the water in the carrier fluid biological filtration tank 130 to be returned to the anaerobic filter bed 2 chamber 112.

  The carrier fluid biological filtration tank 130 is filled with a predetermined amount of carrier C3 to which aerobic microorganisms for aerobic decomposition (aerobic treatment) of organic pollutants in the water to be treated can flow in the tank. A filling region 131 is provided. Each of the upper boundary portion and the lower boundary portion of the carrier filling region 131 is defined by a perforated plate that allows passage of water but prevents passage of the carrier C3. Typically, a carrier formed in a granular hollow cylindrical shape can be suitably used as the carrier C3.

  In this carrier flow biological filtration tank 130, an air diffuser (air diffuser tube) 132 is provided in the carrier filling region 131, and a backwash device (below the air diffuser 132), that is, below the air diffuser 132. A backwash tube) 133 is provided. The air diffuser 132 has a configuration for supplying air used for aerobic treatment to the carrier C3 above the air diffuser 132 in the carrier filling region 131 in the air diffuser operation. By supplying air during this air diffusion operation, an aerobic treatment region is formed above the air diffuser 132, and a filtration treatment region is formed below the air diffuser 132. On the other hand, the backwash device 133 has a configuration in which more air (air) is supplied to the entire carrier C3 in the carrier filling region 131 in the backwash operation than in the normal operation used when the backwash process is performed. By the air supply during the backwashing operation, the entire carrier C3 in the carrier filling region 131 is fluidized, and the carrier C3 that has filtered the material to be filtered in the aeration operation is washed.

  The carrier fluid biological filtration tank 130 is a phosphorus removal treatment area for removing phosphorus (phosphorus component) contained in water, and a phosphorus removal apparatus 140 is provided in the tank. The phosphorus removing device 140 includes an electrode device 141 and a control device 145 connected to the electrode device 141 via a connection cable 144 to control the electrode device 141. In particular, the control device 145 has a function of performing control related to the pair of iron electrodes 143 and 143 such as the energization amount and energization time of the electrode device 141. Above the carrier fluid biological filtration tank 130 is provided an addition device 135 capable of adding at least one of calcium ions and magnesium ions to the water in the tank. This adding device 135 is an implementation configuration example corresponding to the “drug adding device” in the present invention.

  The water after aerobic decomposition (aerobic treatment) and phosphorus removal treatment in the carrier fluid biological filtration tank 130 is transferred to the treated water tank 150 through the opening 134 provided at the bottom of the tank, and in the treated water tank 150. Once stored. Further, the treated water tank 150 is provided with an advection passage 151 by an air-driven air lift pump. The advection passage 151 sucks the water at the bottom of the treated water tank 150 from the suction port 151a by the pumping force of the air lift pump and discharges it from the discharge port 151b to the anaerobic filter bed tank 110 in the anaerobic filter bed tank 110. Perform the function of returning. Thus, the water flowing into the treatment tank main body 110 through the inflow pipe 102 is configured to circulate through the anaerobic filter bed tank 110, the carrier fluidized biological filtration tank 130, and the treatment water tank 150.

  An opening 152 is provided between the treatment water tank 150 and the disinfection tank 170. The opening 152 is configured as an opening that allows water in the treated water tank 150 to be transferred to the disinfection tank 170 by the principle of extrusion flow. The disinfecting tank 170 is provided with a medicine cylinder 171 filled with a solid disinfectant for performing disinfection processing. The water after the disinfection process is performed by the disinfectant eluted from the medicine cylinder 171 is discharged out of the processing tank main body 101 through the outflow pipe 103. In connection with this configuration, another tank, such as a discharge pump tank in which a discharge pump is installed, may be provided downstream of the disinfection tank 170.

  Next, the electrode device 141 of the phosphorus removing device 140 will be described with reference to FIG. The electrode device 141 includes an electrode holding part 142 (cell base) and a pair of iron electrodes 143 and 143 attached and fixed to the electrode holding part 142. The electrode holding part 142 has a function of holding (supporting) the upper portions of the pair of iron electrodes 143 and 143. The electrode holder 142 further includes a holder main body 142a having a handle 142c that can be gripped by the fingers of the operator, and a seal for sealing terminals (not shown) incorporated in the holder main body 142a. It is configured by a lid 142b and the like. Both the holding portion main body 142a and the sealing lid 142b are made of an electrically insulating material such as a synthetic resin material, for example, a vinyl chloride resin, and are configured to prevent leakage to the handle 142c. A support member (not shown) for supporting the electrode device 141 from below is attached to the upper part of the carrier fluid biological filtration tank 130. Specifically, the support member functions to support the electrode holding portion 142 from below in a state where the pair of iron electrodes 143 and 143 are individually or collectively inserted into the insertion holes. Thereby, when performing various inspections (periodic inspection or the like) regarding the electrode device 141, the operator can easily attach and detach the electrode device 141 from the support member by grasping the handle 142c of the electrode holding portion 142 with his / her hand.

  Each iron electrode 143 is formed in a substantially quadrangular (substantially rectangular) flat plate shape in a side view, and is fixed to the electrode holder 142 side with a fixing bolt or the like at its base end. Each iron electrode 143 is configured to extend in a long shape from the proximal end to the distal end. The pair of iron electrodes 143 and 143 are arranged substantially parallel to each other, and the distance between one iron electrode 143 and the other iron electrode 143, that is, the inter-electrode distance d (electrode spacing) is both irons. It is comprised so that it may become substantially constant regarding the extending direction of an electrode. Each iron electrode 143 is typically made of a material containing iron. Each of the pair of iron electrodes 143 and 143 is an electrode for electrolytic treatment immersed in water in the carrier fluid biological filtration tank 130. In addition, the installation number, size, and the like of the pair of iron electrodes 143 and 143 in the water treatment apparatus 100 can be variously changed according to the amount and properties of the water to be treated. For example, in the carrier fluid biological filtration tank 130, a plurality of pairs of iron electrodes 143 and 143 may be installed as necessary.

When the phosphorus removing device 140 having the above-described configuration is operated, an anode and a cathode are formed by energizing each metal electrode 143 of the electrode device 141, and divalent iron ions are formed as metal ions from the anode-side iron electrode 143 into the water. (Fe ²⁺ ) elutes. That is, each iron electrode 143 serves as a supply source for supplying iron ions into the water to be treated. Although not particularly illustrated, the control device 145 is provided with a polarity inverting circuit, and the polarity of the pair of iron electrodes 143 and 143 can be switched by the polarity inverting circuit. Thereby, each iron electrode 143 can become an anode or a cathode. The eluted divalent iron ions (Fe ²⁺ ) are oxidized by dissolved oxygen in water to become trivalent iron ions (Fe ³⁺ ), and these trivalent iron ions (Fe ³⁺ ) are converted to phosphate ions (PO ₄ ^{3). -} ) To produce iron phosphate (FePO ₄ ) which becomes a metal phosphate that is hardly soluble in water. In this way, by performing electrolytic treatment of water containing a phosphorus component using the phosphorus removing device 140, the phosphorus component in the water is precipitated and removed as a metal phosphate that is hardly soluble in water.

  By the way, in the water treatment apparatus 100 having the above-described configuration, the amount of iron ions eluted from the iron electrode 143 of the electrode apparatus 141 is adjusted based on the phosphorus concentration of the incoming raw water. Specifically, the phosphorus removal treatment is first performed by setting the phosphorus: iron molar ratio of the incoming raw water to 1: 1.5. In this case, when the desired phosphorus removal performance cannot be obtained, the electrode device 141 is further provided. Is adjusted to increase the amount of metal ions eluted from the iron electrodes 143 and 143. However, even if the amount of metal ions eluted from the iron electrodes 143 and 143 is greatly increased (for example, about 2 times) by such adjustment, there may arise a problem that a desired phosphorus removal performance cannot be obtained.

  As a result of intensive studies on the phosphorus removal performance, the present inventors have found that the cause of the problem is a lack of calcium ions and magnesium ions contained in the water to be treated in addition to the phosphorus concentration. On that basis, it was discovered that by increasing the concentration of calcium ions and magnesium ions, the desired phosphorus removal performance can be obtained without significantly increasing the elution amount of iron ions.

  Calcium ions and magnesium ions are added to the water to be treated in the carrier fluid biological filtration tank 130 from the addition device 135. With reference to FIGS. 3-6, the addition apparatus 135 is demonstrated in detail. FIG. 3 shows a side sectional view of the addition device 135. As shown in FIG. 3, the adding device 135 is configured mainly with a main body 136, a cap 137, and an opening adjusting member 138. As for the addition apparatus 135, the cap 137 side (upper in FIG. 3) faces the upper side of the water treatment apparatus 100, and the opening adjustment member 138 side (lower in FIG. 3) is treated water stored in the carrier fluid biological filtration tank 130. It arrange | positions so as to oppose the water surface.

  The main body 136 is a cylindrical member, and is configured such that the diameter on the cap 137 side is smaller than the diameter on the opening adjustment member 138 side. The upper end of the main body 136 is entirely open upward. In addition, four openings 136 a are formed at the lower end of the main body 136. The cap 137 is configured to be attachable to and detachable from the opening at the upper end portion of the main body 136 and is attached in close contact with the main body 136. The opening adjustment member 138 is attached to the lower end portion of the main body 136 and is configured to be rotatable in the circumferential direction of the main body 136. The opening adjusting member 138 has four openings 138a.

  As shown in FIG. 4, a medicine container 139 is stored inside the main body 136. The medicine container 139 is placed inside the main body 136 from the opening at the upper end of the main body 136 with the cap 137 removed. Thereafter, the cap 137 is in close contact with the opening at the upper end of the main body 136 and sealed. The medicine container 139 includes a housing bag 139a that allows gas and liquid to pass through, and a medicine 139b that is housed in the housing bag 139a. As the accommodation bag 139a, for example, a net, a gauze, or the like is used. The medicine 139b contains calcium and magnesium, and calcium chloride and magnesium chloride having deliquescence are used in particular. The drug container 139 can be replaced with a drug container 139 containing a new drug 139b by removing the cap 137 and removing the cap 137 during regular maintenance of the water treatment apparatus 100. .

  As shown in FIG. 5, when the opening 138a of the opening adjustment member 138 and the opening 136a of the main body 136 coincide with each other, the air outside the addition device 135 (outside air) passes through the openings 138a and 136a. The area where the medicine 139b accommodated in the medicine container 139 is in contact with the outside air matches the total opening area of the four openings 136a (or openings 138b). On the other hand, as shown in FIG. 6, when the opening adjustment member 138 is rotated in the circumferential direction with respect to the main body 136, the positions of the opening 138 a of the opening adjustment member 138 and the opening 136 a of the main body 136 are shifted. Thereby, the overlapping part of the opening 138a and the opening 136a becomes an opening area where the medicine 139b accommodated in the medicine container 139 comes into contact with the outside air. That is, by rotating the opening adjustment member 138 in the circumferential direction of the main body 136, the area where the medicine 139b accommodated in the medicine container 139 contacts with the outside air can be changed.

  The addition device 135 configured as described above supplies moisture in the air to the medicine 139b through the openings 138a and 136a. Since the medicine 139b has deliquescence, an aqueous solution containing the ingredients of the medicine 139b is generated by deliquescence with moisture in the air. The openings 138 a and 136 a are formed at the lower end of the adding device 135. Therefore, the produced aqueous solution is dripped with respect to the to-be-processed water currently stored by the carrier fluid biological filtration tank 130 by gravity. Thereby, the component of a chemical | medical agent, ie, calcium or magnesium, is added as calcium ion or magnesium ion to the to-be-processed water stored in the carrier fluid biological filtration tank 130. The aqueous solution containing the component of the medicine 139b is an implementation configuration example corresponding to the “medical solution” in the present invention.

  According to the present embodiment described above, by using the above-described addition device 135, the chemical component in the water to be treated flowing into the water treatment device 100 without installing a control device or the like for the water treatment device 100. Can be added quantitatively. Furthermore, by changing the area where the medicine 139b accommodated in the medicine container 139 comes into contact with air, the amount of the medicine deliquescent per unit time can be controlled. Therefore, the amount of the chemical component added quantitatively to the water to be treated flowing into the water treatment apparatus 100 can be controlled. For example, during regular maintenance of the water treatment apparatus 100, the opening adjustment member 138 is rotated with respect to the main body 136, thereby adjusting the opening area where the medicine 139b is in contact with the air outside the addition apparatus 135 (outside air). And the quantity of the component of the chemical | medical agent added to the to-be-processed water which flows into the water treatment apparatus 100 per unit time can be adjusted.

  Moreover, according to this Embodiment above, the area | region above the surface of the to-be-processed water in the processing apparatus 100 has high humidity stably, and the fluctuation | variation of temperature is also small. Therefore, since the addition apparatus 135 is arrange | positioned in the water treatment apparatus 100, the chemical | medical agent 139b can be liquefied stably.

  Further, according to the present embodiment described above, the openings 138a and 136a of the adding device 135 are formed in the lower portion of the adding device 135 and open downward. Therefore, when the medicine 139b in the lower part of the addition device 135 near the openings 138a and 136a is dropped as an aqueous solution by deliquescence, the medicine 139b in the upper part moves to the openings 138a and 136a by gravity. Thereby, the quantity which the medicine 139b deliqueses can be kept constant. In this case, even if the hygroscopic drug 139b swells, the main body 136 of the adding device 135 is configured to increase in diameter toward the lower side. It is possible to move to the lower part of the main body 136 without being caught on the inner periphery of the main body 136. The shape of the main body 136 is not limited to a cylindrical shape (conical truncated cone shape) in which the lower cross-sectional area is larger than the upper portion of the main body, and a cylindrical shape or a prism having the same upper and lower cross-sectional areas. Other shapes such as shapes can also be employed. In addition, if the cross-sectional area of the lower part is larger than the upper part of the main body part, the medicine 139b can be moved to the lower part of the main body part 136 without being caught on the inner periphery of the main body part 136.

  In addition, according to the present embodiment described above, stable phosphorus removal is achieved by adding calcium ions or magnesium ions corresponding to the elution amount of iron ions caused by the iron electrode to the water in the carrier fluid biological filtration tank 130. Performance can be obtained.

  In the above embodiment, since the to-be-processed water which flowed into the water treatment apparatus 100 circulates through the anaerobic filter bed tank 110, the carrier fluid biological filtration tank 130, and the treatment water tank 150, the carrier fluid organism You may install the addition apparatus 135 in the upper part of the anaerobic filter bed tank 110 as processing tanks other than the filtration tank 130. FIG. In this case, the upper region of the anaerobic filter bed 113, 116 in the anaerobic filter bed chamber 1 111 or the anaerobic filter bed chamber 2 112 can be employed as the installation region of the addition device 135.

  In the above description, the phosphorus removal device 140 is provided in the carrier fluid biological filtration tank 130. However, the present invention is not limited to this. For example, as shown in FIG. 7, an iron electrolytic cell through which the water to be treated that has flowed into the water treatment device 100 passes may be separately provided, and the phosphorus removing device 140 may be provided in the iron electrolytic cell. In this case, the addition device 135 may be installed above the carrier fluid biological filtration tank 130 or the anaerobic filter bed tank 110. However, as shown in FIG. 7, the addition device 135 may be installed above the iron electrolysis tank. Further preferred.

  Moreover, in the above, it was comprised so that the chemical | medical agent container 139 may be replaced | exchanged from the upper part of the addition apparatus 135 by removing the cap 137 of the addition apparatus 135, However, It is not restricted to this. For example, the portion where the opening adjusting member 138 of the adding device 135 and the opening 136a of the main body 136 are formed is configured to be detachable, and the drug container 139 is configured to be replaced from the lower portion of the adding device 135. It may be.

  Moreover, although the addition apparatus 135 was installed in the inside of the processing tank main body 101 in the water treatment apparatus 100 in the above, it is not restricted to this. For example, you may install the addition apparatus 135 in the exterior of the processing tank main body 101. FIG.

  Moreover, in the above, the addition apparatus 135 was comprised so that the component of a chemical | medical agent might be added with respect to the to-be-processed water which flowed into the processing tank main body 101, However, It is not restricted to this. For example, you may comprise the addition apparatus 135 so that the component of a chemical | medical agent may be added to the raw | natural water before flowing in into the processing tank main body 101. FIG. That is, the addition device 135 may be configured to add the chemical component in the inflow pipe 102 through which the raw water flowing into the treatment tank main body 101 passes.

  In the above description, the case where the phosphorus removal of the water in the carrier fluid biological filtration tank 130 is performed with iron ions has been described. However, in the present invention, metal ions appropriately selected from iron ions, aluminum ions, and other metal ions. Can also be used. In this case, the metal ions may be supplied to the water to be treated by electrolytic treatment of the alloy containing the metal, dissolution treatment by contact between the alloy containing the metal and another metal having a different ionization tendency, salt dissolution treatment, or the like. Alternatively, it may be supplied directly to the water to be treated as an ionic state. When supplying metal directly to the water to be treated, use salt with deliquescent properties such as iron (III) chloride or aluminum salt, or mix salt containing iron or aluminum with chemicals with deliquescent properties. By using the deliquescence property of the drug, the metal may be added to the water to be treated at the same time when the aqueous solution of the drug is added to the water to be treated. In the case where the metal is directly supplied to the water to be treated, the water treatment apparatus 100 is provided with a device for eluting the metal constituting the electrode into the water to be treated, such as a phosphorus removing device 140 or an iron electrolytic cell. It does not have to be.

  Moreover, when utilizing the deliquescence property of a chemical | medical agent, it is not limited to the structure which mixes a metal and a chemical | medical agent, You may mix a chemical | medical agent and a chlorine-type disinfectant. According to this configuration, the chlorine-based disinfectant is added to the water to be treated when the aqueous solution of the medicine is added to the water to be treated using the deliquescence of the medicine.

  In addition, in the above, either calcium ions or magnesium ions may be supplied by deliquescence of calcium chloride or magnesium chloride, or both calcium ions and magnesium ions may be supplied. Further, salts other than calcium chloride and magnesium chloride may be used as long as they have deliquescence, and for example, citric acid, potassium carbonate, sodium nitrite, and the like may be used. Furthermore, as for the salt containing iron or aluminum, not only calcium chloride and magnesium chloride but also citric acid, potassium carbonate, sodium nitrite and the like may be mixed with iron or aluminum.

  In the above, in the water treatment apparatus 100, the case where the water treatment mechanism 101a is configured by the treatment elements of the anaerobic treatment tank 110, the carrier fluid biological filtration tank 130, the treatment water tank 150, and the disinfection tank 170 is described. In the present invention, the number and types of treatment elements of the water treatment mechanism 101a can be variously selected as necessary. Further, in this case, the addition device 135 is not limited to the configuration installed above the carrier fluid biological filtration tank 130 or above the iron electrolysis tank, and may be appropriately installed above each processing element. Moreover, you may install the several addition apparatus 135 one by one above arbitrary processing elements. Moreover, you may install the several addition apparatus 135 above one process element (For example, the carrier fluidized biological filtration tank 130 and an iron electrolysis tank). That is, the amount of chemical components added to the water to be treated may be adjusted by installing a plurality of addition devices 135.

  Moreover, in the above, although the water treatment apparatus 100 which processes raw | natural water discharged | emitted from a general household, an apartment house, etc. was described, this invention is not limited to an ordinary household, an apartment house, but commercial facilities, public facilities, factories, etc. The present invention can also be applied to a water treatment apparatus that treats raw water discharged from facilities.

(Correspondence between each component of the embodiment and each component of the present invention)
This embodiment shows an example of an embodiment for carrying out the present invention. Therefore, the present invention is not limited to the configuration of the present embodiment. The correspondence between each component of the present embodiment and each component of the present invention is shown below.
The water treatment apparatus 100 is an example of a configuration corresponding to the “liquid treatment apparatus” of the present invention.
The processing tank main body 101 is an example of a configuration corresponding to the “tank main body” of the present invention.
The area | region where the to-be-processed water in the anaerobic filter bed tank 110 and the support | carrier flow biological filtration tank 130 is stored is an example of the structure corresponding to the "storage area | region" of this invention.
The adding device 135 is an example of a configuration corresponding to the “drug adding device” of the present invention.
The medicine 139b is an example of a configuration corresponding to the “medicament” of the present invention.
The aqueous solution containing the component of the medicine 139b is an example of a configuration corresponding to the “medical solution” of the present invention.
The carrier fluid biological filtration tank 130 is an example of a configuration corresponding to the “electrolytic treatment tank” of the present invention.
The carrier fluid biological filtration tank 130 and the phosphorus removal device 140 are an example of a configuration corresponding to the “phosphorus removal mechanism” of the present invention.

DESCRIPTION OF SYMBOLS 100 Water treatment apparatus 101 Treatment tank main body 101a Water treatment mechanism 102 Inflow pipe 103 Outflow pipe 104 Manhole part 110 Anaerobic filter bed tank 111 Anaerobic filter bed tank 1 Room 112 Anaerobic filter bed tank 2 Room 113 Anaerobic filter bed 114 Transfer channel 115 Opening part 116 Anaerobic Filter Bed 117 Advection Passage 117a Suction Port 117b Discharge Port 118 Opening Portion 130 Carrier Fluid Biofiltration Tank 131 Carrier Filling Region 132 Aeration Device 133 Backwashing Device 134 Opening Portion 135 Addition Device 136 Main Body 136a Opening Portion 137 Cap 138 Opening Adjustment member 138a Opening portion 139 Drug container 139a Storage bag 139b Drug 140 Phosphorus removal device 141 Electrode device 142 Electrode holding portion 142a Holding portion main body 142b Sealing lid 142c Handle 143 Iron electrode 144 Connection cable 145 Control device 150 Treatment water tank 151 Transfer passage 151 Inlet 151b discharge port 152 opening 170 and disinfecting bath 171 the chemical cartridge

Claims (9)

A tank body in which a storage region capable of storing liquid is formed;
A liquid processing apparatus that contains a medicine and has a medicine addition device that adds a component of the medicine to the liquid that has flowed into the tank body, and performs processing of the liquid that has flowed into the tank body. ,
The tank body has a tank upper portion with a manhole part,
The drug is a deliquescent substance,
The drug addition device has a lower opening provided in a lower portion, and stores the drug solution generated when the stored medicine is deliquescent by the outside air that has flowed through the lower opening in the drug addition device. Configured to be added to the liquid stored in the
The drug addition device is a region above the storage region in the vertical direction, and is disposed in a space formed between the water surface of the liquid flowing into the tank body and the tank upper part ,
The tank body has an electrolytic treatment tank for eluting metal ions with respect to the liquid,
The liquid treatment apparatus , wherein the electrolytic treatment tank is disposed at a lower portion of the chemical addition apparatus. The liquid processing apparatus according to claim 1 ,
The electrolytic processing tank constitutes a phosphorus removal mechanism that removes phosphorus from a liquid by reacting the metal ions with phosphorus in the liquid. The liquid processing apparatus according to claim 1 , wherein
The tank body has a plurality of processing tanks, and is configured so that liquid circulates through the plurality of processing tanks,
The said chemical | medical agent addition apparatus is arrange | positioned in any one of these process tanks, The liquid processing apparatus characterized by the above-mentioned. The liquid processing apparatus according to any one of claims 1 to 3 ,
The drug addition device is configured to change the amount of drug solution generated by deliquescent of the drug per unit time by changing the area of the part where the drug contacts the outside air of the drug addition device. A liquid processing apparatus. The liquid processing apparatus according to any one of claims 1 to 4 ,
The liquid treatment apparatus, wherein the chemical is calcium chloride or magnesium chloride. The liquid processing apparatus according to any one of claims 1 to 5 ,
The medicine adding device contains a mixture in which the medicine and a salt containing iron are mixed, and the salt containing iron is added to the liquid when the medicine in the mixture is deliquescent. A liquid processing apparatus. The liquid processing apparatus according to any one of claims 1 to 6 ,
The drug addition device has a main body portion and an opening adjustment member,
The main body has a first end and a second end which is an end opposite to the first end, and is configured to accommodate the medicine.
The first end has the lower opening ;
The opening adjustment portion has an opening adjustment portion opening and is rotatably attached to the first end portion of the main body portion,
Furthermore, the deliquescent drug is dripped into the water to be treated through the region of the lower opening and the region of the opening adjustment portion that are overlapped by rotating the main body and the opening adjustment portion relatively. A liquid processing apparatus configured as described above. The liquid processing apparatus according to claim 7 ,
The drug addition device has a cap,
The second end has an upper opening ;
The liquid processing apparatus, wherein the cap is configured to be detachable from the second end opening. A liquid processing apparatus according to claim 7 or 8 ,
The drug addition device has a drug container,
The drug container has a storage bag that transmits gas and liquid, and the drug stored in the storage bag,
The liquid processing apparatus, wherein the main body is configured to receive the medicine container.

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