Processing apparatus and processing method for a liquid to be processed

Abstract

Reduce the time required for supplying and discharging the liquid to be processed. 【Solution means】The above problem is solved by a processing apparatus 100 for a liquid to be processed, which comprises a processing tank 1 for storing the liquid to be processed D, a movable partition 2 for partitioning the inside of the processing tank 1 into a first compartment S1 and a second compartment S2 that are liquid-tightly separated from each other so that the liquid does not flow between them, a first supply port 10a for supplying the liquid to be processed D to the first compartment S1, a first discharge port 10b for discharging non-processed liquid from the first compartment S1, a second supply port 11a for supplying the liquid to be processed D to the second compartment S2, and a second discharge port 11b for discharging non-processed liquid from the second compartment S2. The movable partition 2 is movable between a first state along the side wall 1S of the processing tank 1 in the first compartment S1 and a second state along the side wall 1S of the processing tank 1 in the second compartment S2 while maintaining the liquid-tight state of the first compartment S1 and the second compartment S2.

Description

Technical Field

[0001] The present invention relates to an apparatus and a method for treating a liquid to be treated.

Background Art

[0002] The methods for treating a liquid to be treated include a continuous method and a batch method (a batchwise method). For example, the methods described in Patent Documents 1 and 2 are continuous treatment methods. In the continuous method, the treatment can be carried out without interruption. However, in order to strictly maintain the target treatment quality, it is desirable to detect the flow rate and properties of the liquid to be treated and the quality of the treated liquid, and control the treatment conditions. For example, in the method described in Patent Document 1, it is desirable to control the amount of carbon dioxide blown in according to the detection results of the flow rate and pH of the liquid to be treated, and to return the liquid to be treated when the detection result of the ion concentration of the treated liquid is equal to or higher than a predetermined value. Therefore, the continuous method may be unsuitable when the component variation of the liquid to be treated is large or when it is desired to simplify the treatment apparatus.

[0003] On the other hand, in the batch method, the treatment is carried out while storing the liquid to be treated in a treatment tank, and after reaching the target treatment quality, the treated liquid in the treatment tank is discharged. Therefore, it is suitable when it is desired to strictly maintain the treatment quality or when it is desired to simplify the treatment apparatus.

[0004] However, in the conventional batch method, the next liquid to be treated cannot be supplied to the treatment tank unless the treated liquid is completely discharged, and both the time required for supplying one batch amount of the liquid to be treated and the time required for discharging one batch amount of the treated liquid are required. Therefore, there is a problem that the treatment efficiency is inevitably lower than that of the continuous method.

[0005] Needless to say, this problem is independent of the treatment object and treatment content in batch treatment using a treatment tank.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] Therefore, the main problem to be solved by the present invention is to provide a processing apparatus and method capable of shortening the time required for supplying and discharging the liquid to be processed.

Means for Solving the Problems

[0008] The processing apparatus and processing method for the liquid to be processed that solve the above problems are as follows. <First Aspect> A processing tank for storing the liquid to be processed, A movable partition that divides the inside of the processing tank into a first compartment and a second compartment that are shielded from each other so that liquid does not flow between them, A first supply port for supplying the liquid to be processed to the first compartment, A first discharge port for discharging the processed liquid from the first compartment, A second supply port for supplying the liquid to be processed to the second compartment, A second discharge port for discharging the processed liquid from the second compartment, and The movable partition is movable between a first state along the side wall of the processing tank in the second compartment and a second state along the side wall of the processing tank in the first compartment while maintaining the liquid shielding state of the first compartment and the second compartment. A processing apparatus for the liquid to be processed, characterized by the above.

[0009] (Function and Effect) In this processing apparatus, a first liquid supply / discharge step is performed, which includes simultaneously supplying a liquid to be processed from a first supply port to a first compartment while moving a movable partition from a second state to a first state, and discharging the processed liquid stored in a second compartment from a second discharge port. A second liquid supply / discharge step is also performed, which includes simultaneously supplying a liquid to be processed from a second supply port to a second compartment while moving the movable partition from the first state to the second state, and discharging the processed liquid stored in the first compartment from a first discharge port. These two steps can be alternately performed with a processing step of the liquid to be processed in the processing tank in between. Therefore, in this processing apparatus, although it processes in a batch manner using a processing tank, it can perform liquid supply and discharge simultaneously, and can significantly shorten the time required for supplying and discharging the liquid to be processed compared to a conventional method that requires both the time required for supplying a batch amount of the liquid to be processed and the time required for discharging a batch amount of the processed liquid. In order to shorten the time required for liquid supply and discharge, it is conceivable to increase the supply rate and discharge rate of the liquid to be processed by using a larger-capacity pump or operating two processing tanks alternately. However, the apparatus of this aspect is more advantageous in terms of cost and installation space.

[0010] <Second Aspect> The movable partition is a flexible partition sheet. The partition sheet has a semi-cylindrical wall portion that follows the shape of the inner surface of the side wall of the processing tank along a pair of intersection lines between a vertical plane that bisects the inside of the processing tank in the lateral direction and the inner surface of the side wall of the processing tank, and a bottom portion that extends from the lower edge of the wall portion along the bottom surface of the processing tank to the vertical plane. The upper edge of the wall portion is not fixed to the top surface of the processing tank and is either in contact with the top surface of the processing tank or spaced downward from the top surface of the processing tank. Only the portion of the wall portion corresponding to the pair of intersection lines with the vertical plane on the inner surface of the side wall of the processing tank is liquid-tightly fixed to the inner surface of the side wall of the processing tank. Only the portion of the bottom portion corresponding to the position of the intersection line with the vertical plane on the bottom surface of the processing tank is liquid-tightly fixed to the bottom surface of the processing tank. In the first state, one side surface of the wall portion contacts the inner surface of the side wall of the treatment tank and one side surface of the bottom portion contacts the bottom surface of the treatment tank in one lateral side in the treatment tank. In the second state, the other side surface of the wall portion contacts the inner surface of the side wall of the treatment tank and the other side surface of the bottom portion contacts the bottom surface of the treatment tank in the other lateral side in the treatment tank. The upper edge of the wall portion is positioned above the liquid levels of the liquid to be treated and the treated liquid in the treatment tank. A treatment apparatus for a liquid to be treated according to the first aspect.

[0011] (Function and effect) The movable partition is not particularly limited as long as it can move between the first state and the second state while blocking the liquid so that the liquid does not flow between the first compartment and the second compartment. However, if it is configured by a flexible partition sheet as in this aspect, there is no need to separately provide a drive mechanism for moving the movable partition, and the structure becomes particularly simple. That is, in this aspect, by simultaneously supplying the liquid to be treated from the first supply port to the first compartment and discharging the treated liquid stored in the second compartment from the second discharge port, while maintaining the liquid levels in the first compartment and the second compartment at approximately the same level, the movable partition can be moved from the second state to the first state along with the change in the storage ratio in the first compartment and the second compartment. Similarly, by simultaneously supplying the liquid to be treated from the second supply port to the second compartment and discharging the treated liquid stored in the first compartment from the first discharge port, while maintaining the liquid levels in the first compartment and the second compartment at approximately the same level, the movable partition can be moved from the first state to the second state along with the change in the storage ratio in the first compartment and the second compartment.

[0012] <The third aspect> A floating body is provided at the upper end portion of the partition sheet. A treatment apparatus for a liquid to be treated according to the second aspect.

[0013] (Function and effect) According to this aspect, with a simple structure that only adds a floating body, not only when the partition sheet is in the first state or the second state, but also when moving between the first state and the second state, the upper edge of the partition wall is more reliably maintained above the liquid level, and overflow between the first compartment and the second compartment is effectively prevented.

[0014] <Fourth Aspect> a supply pump for the liquid to be treated, a supply pipeline having an outlet of the supply pump and communicating with the first supply port and the second supply port, the supply pipeline has a common pipeline communicating with the outlet of the supply pump, a first branch pipeline branched from the common pipeline and communicating with the first supply port, and a second branch pipeline communicating with the second supply port, the common pipeline is provided with a treatment agent supply means for supplying a treatment agent, a treatment apparatus for the liquid to be treated according to any one of the first to third aspects.

[0015] (Function and Effect) By configuring the supply system as in this aspect, when supplying a treatment agent (including a gas such as ozone) to the liquid to be treated supplied to the first supply port and the second supply port, a common supply pump and treatment agent supply means can be used (there is no need to provide them individually), and a simpler treatment apparatus can be obtained.

[0016] <Fifth Aspect> a first sampling port for sampling the liquid to be treated in the first compartment and a second sampling port for sampling the liquid to be treated in the second compartment, a treatment apparatus for the liquid to be treated according to any one of the first to fourth aspects.

[0017] (Function and Effect) By having sampling ports in the first compartment and the second compartment in this way, the quality of the treated liquid in each batch can be confirmed.

[0018] <Sixth Aspect> a treatment tank for storing the liquid to be treated, A movable partition that divides the inside of the treatment tank into a first compartment and a second compartment that are liquid-tightly separated from each other so that liquid does not flow between them, A first supply port for supplying the liquid to be treated to the first compartment, A first discharge port for discharging the treated liquid from the first compartment, A second supply port for supplying the liquid to be treated to the second compartment, A second discharge port for discharging the treated liquid from the second compartment, and The movable partition is movable between a first state along the side wall of the treatment tank in the second compartment and a second state along the side wall of the treatment tank in the first compartment while maintaining the liquid-tight state of the first compartment and the second compartment. Using a treatment device for the liquid to be treated, A first liquid supply / discharge step including simultaneously supplying the liquid to be treated from the first supply port to the first compartment and discharging the treated liquid stored in the second compartment from the second discharge port while moving the movable partition from the second state to the first state; and a second liquid supply / discharge step including simultaneously supplying the liquid to be treated from the second supply port to the second compartment and discharging the treated liquid stored in the first compartment from the first discharge port while moving the movable partition from the first state to the second state, are alternately performed sandwiching the treatment step of the liquid to be treated in the treatment tank. A method for treating a liquid to be treated, characterized by the above.

[0019] (Function and effect) It exhibits the same function and effect as the first aspect.

Effect of the Invention

[0020] According to the present invention, the time required for supplying and discharging the liquid to be treated can be shortened.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 6

Figure 7

Figure 8

Figure 9

Mode for Carrying Out the Invention

[0022] Hereinafter, an example of an apparatus for treating a liquid to be treated will be described. Note that the following description and drawings are merely examples, and the content of the present invention should not be construed as being limited to the following description and drawings.

[0023] (Liquid to be treated) The liquid to be treated and the treatment content in the processing device are not particularly limited. As an example, it includes the purification treatment of drainage or waste liquid such as tunnel structure internal drainage, sprayed green concrete drainage, die slime recovery drainage, batch plant drainage, river construction dry pit drainage, deep foundation construction drainage, grouting construction drainage, shield construction drainage, shield excess muddy water, dredging landfill drainage, caisson construction drainage, site pile driving drainage, floor cleaning drainage, well point construction drainage, foundation construction yard drainage, tire cleaning drainage, core boring drainage, diamond cutter drainage, soil pollution excavation yard drainage, VOC decomposition cleaning drainage, incinerator disassembly cleaning drainage, radioactive decontamination construction drainage, wire saw cutting construction drainage, water jet cutting construction drainage, paper mill process drainage, pulp mill process drainage, food factory cleaning drainage, green concrete factory cleaning drainage, concrete secondary product factory drainage, crushed stone factory yard drainage, gas cleaning scrubber drainage, garbage incinerator quench tower drainage, converter gas cleaning drainage, arc furnace gas cleaning drainage, silver recovery process drainage, sand washing device drainage, water washing neutralization drainage, barrel polishing drainage, electrolytic polishing drainage, glass polishing drainage, wet blasting drainage, spray painting booth drainage, cationic painting drainage, stainless steel pickling drainage, raw material yard drainage, raw material conveyor cleaning drainage, deposited dust wet recovery drainage, factory yard drainage, continuous casting drainage, rolling cooling drainage, dehumidification drain drainage, immersion cutting yard drainage, ore yard drainage, ship bottom bilge drainage, shipbuilding dock drainage, barnacle removal drainage, cooling tower blowdown drainage, dyeing factory drainage, milk plant cleaning drainage, tunnel wall cleaning drainage, building exterior wall cleaning drainage, car wash drainage, golf course drainage, industrial disposal site leachate, etc., as well as sewage treatment and water supply treatment (manufacture of drinking water from river, lake, and marsh water or seawater). Examples of the treatment content include performing a treatment accompanied by a change such as the addition of a treatment agent (including solids or liquids such as flocculants, as well as gases such as ozone and carbon dioxide) in the present treatment device, and continuing storage until the middle or end of the treatment. In addition, it may be possible to store the liquid to be treated, in which a treatment accompanied by a quality change such as the addition of a treatment agent has been started in advance, until the middle or end of the treatment, or it may be a storage treatment without a quality change that simply stores the liquid to be treated (merely as a buffer).

[0024] FIG. 1 shows an example of a processing apparatus 100 for a liquid D to be processed. This processing apparatus 100 includes a processing tank 1 for storing the liquid D to be processed, a movable partition 2 that divides the inside of the processing tank 1 into a first compartment S1 and a second compartment S2 that are liquid-tightly separated from each other, a first supply port 10a for supplying the liquid D to be processed to the first compartment S1, a first discharge port 10b for discharging unprocessed liquid from the first compartment S1, a second supply port 11a for supplying a liquid C to be processed to the second compartment S2, and a second discharge port 11b for discharging unprocessed liquid from the second compartment S2. In this processing apparatus 100, although it processes in a batch manner using the processing tank 1, it can perform liquid supply and discharge simultaneously. This flow will be described in detail later. First, the configuration of this processing apparatus 100 will be described.

[0025] (Processing tank) The processing tank 1 stores the liquid D to be processed. The processing tank 1 has a bottom wall 1B and a side wall 1S with respect to the stored liquid, and is not particularly limited as long as it has a movable partition 2 to be described later. However, when the movable partition 2 is constituted by a partition sheet 2S to be described later, it preferably has a cylindrical storage space because the movable partition 2 can easily run along the side wall 1S of the processing tank 1. However, it may be changed to an arbitrary shape, such as having a prismatic storage space.

[0026] (Movable partition) The movable partition 2 is not particularly limited as long as it can move between a first state along the side wall 1S of the treatment tank 1 in the second partition S2 and a second state along the side wall 1S of the treatment tank 1 in the first partition S1 while maintaining the liquid-blocking state of the first partition S1 and the second partition S2. One preferred example of the movable partition 2 is configured using a flexible partition sheet 2S as shown in FIGS. 1 to 4. More specifically, when the intersection lines of the vertical plane F that bisects the treatment tank 1 horizontally and the inner surface of the side wall 1S of the treatment tank 1 are L1 and L2 respectively, the partition sheet 2S has a semi-cylindrical wall portion 2W that extends along the shape of the inner surface of the side wall 1S of the treatment tank 1 from one intersection line L1 to the other intersection line L2, and a bottom portion 2B that extends from the lower edge of the wall portion 2W along the bottom surface of the treatment tank 1 to the vertical plane F. In the example shown in FIGS. 1 to 4, since the storage space of the treatment tank 1 is cylindrical, the wall portion 2W of the partition sheet 2S is semi-cylindrical along the inner surface of the side wall 1S of the treatment tank 1. However, as shown in FIGS. 5 and 6, when the storage space of the treatment tank 1 is square-columnar, the wall portion 2W of the partition sheet 2S is semi-square-columnar along the inner surface of the side wall 1S of the treatment tank 1. The upper edge of the wall portion 2W is not fixed to the top surface of the treatment tank 1 and is spaced downward from the top surface of the treatment tank 1. The upper edge of the wall portion 2W may be in contact with the top surface of the treatment tank 1. Also, only the portions of the wall portion 2W corresponding to the pair of intersection lines L1 and L2 are fixed to the inner surface of the side wall 1S of the treatment tank 1 in a liquid-tight manner, and only the portion of the bottom portion 2B corresponding to the position of the intersection line with the vertical plane on the bottom surface of the treatment tank 1 is fixed to the bottom surface of the treatment tank 1 in a liquid-tight manner.

[0027] As the fixing means of the partition sheet 2S, mechanical joining such as joining with rivets 2r as shown in FIGS. 5 and 6 may be used, but other means such as adhesives and welding can also be used together with or instead of this. When the liquid blocking between the first partition S1 and the second partition S2 cannot be achieved only by the fixing means of the partition sheet 2S, known sealing means 2c such as caulking agents and sealing materials can be interposed between the fixing portion of the partition sheet 2S and the inner surface of the treatment tank 1 as necessary. As the material of the partition sheet 2S, a water-blocking sheet (waterproof sheet) such as a rubber sheet or a tarpaulin can be used.

[0028] The movable partition 2 may be, for example, as shown in FIG. 7, a flat partition wall that does not deform and moves in the direction in which the side walls 1S face each other between a pair of opposing side walls 1S. As will be described later, it is preferable that the movable partition 2 does not have a drive mechanism for moving the movable partition 2 and moves the movable partition 2 from the second state to the first state or from the first state to the second state, but it may be configured to move the movable partition 2 by a reciprocating drive mechanism using a drive source such as a cylinder.

[0029] (First supply port, first discharge port, second supply port, second discharge port) In the treatment tank 1, a first supply port 10a for supplying the liquid to be treated D and a first discharge port 10b for discharging the treated liquid C are provided in the first compartment, and a second supply port 11a for supplying the liquid to be treated D and a second discharge port 11b for discharging the treated liquid C are also provided in the second compartment. The first supply port 10a and the first discharge port 10b can be provided individually as in the example shown in FIG. 9, but can also be a common supply / discharge port 10a, 10b communicating with the inside of the treatment tank 1 as in the example shown in FIG. 1. That is, having a supply port and a discharge port includes not only the case where they are individually provided but also the case where they are a common port. Similarly, the second supply port 11a and the second discharge port 11b can be provided individually, but can also be a common supply / discharge port 11a, 11b communicating with the inside of the treatment tank 1. In the latter case, a common supply / discharge port for the first supply port 10a and the first discharge port 10b is connected to the supply pipeline 4 and the discharge pipeline 5 for the liquid to be treated via a first three-way valve V1, and by switching the flow path of the first three-way valve V1, the supply / discharge port 10a, 10b communicates with the supply pipeline 4 and is in a first supply state where it does not communicate with the discharge pipeline 5, and the supply / discharge port 10a, 10b communicates with the discharge pipeline 5 and is in a first discharge state where it does not communicate with the supply pipeline 4. Similarly, in the latter case, the second supply port 11a and the second discharge port 11b are connected to a second three-way valve V2, and by switching the flow path of the second three-way valve V2, the supply / discharge port 11a, 11b communicates with the supply pipeline 4 and is in a second supply state where it does not communicate with the discharge pipeline 5, and the supply / discharge port 11a, 11b communicates with the discharge pipeline 5 and is in a second discharge state where it does not communicate with the supply pipeline 4.

[0030] The supply ports 10a, 11a and the discharge ports 10b, 11b are preferably provided on the side wall 1S of the treatment tank 1. However, the pipes having supply ports and the pipes having discharge ports may each extend into the first compartment S1 and the second compartment S2 of the treatment tank 1 (not shown). The positions of the supply ports 10a, 11a and the discharge ports 10b, 11b can be determined as appropriate. If the discharge ports 10b, 11b are provided at the lower end of the side wall 1S or the bottom wall 1B of the treatment tank 1, the treated liquid C can be discharged from the treatment tank 1 by natural flow without using a discharge pump. Of course, the treated liquid C may be configured to be discharged using a discharge pump. In the illustrated example, the treatment liquid D is fed to the supply ports 10a, 11a by the supply pump P1, but the treatment liquid D may be fed by natural flow from a storage tank (not shown) without using the supply pump P1.

[0031] (Regarding treatment agent supply) As shown in the illustrated example, if the supply pipeline 4 communicating from the outlet of the supply pump P1 to the first supply port 10a and the second supply port 11a has a common pipeline 4a communicating with the outlet of the supply pump P1, and a first branch pipeline 4b communicating from this common pipeline 4a to the first supply port 10a and a second branch pipeline 4b communicating to the second supply port 11a, it is preferable because the treatment liquid D can be supplied into the treatment tank 1 from the common supply pump P1 through the first supply port 10a or the second supply port 11a. In this configuration, when supplying a treatment agent (including a gas such as ozone) to the treatment liquid D supplied to the first supply port 10a and the second supply port 11a, the treatment agent may be supplied to the first branch pipeline 4b and the second branch pipeline 4b respectively. However, if it is configured to supply to the common pipeline 4a, it is preferable because there is no need to provide individual supply means for the D treatment agent, and the treatment device 100 becomes simpler.

[0032] (Floating body) When the movable partition 2 is a partition sheet 2S, as shown in FIGS. 1 to 6, it is preferable to provide a floating body 12 at the upper end of the partition sheet 2S. Examples of the floating body 12 include a balloon and foamed urethane. The floating body can be provided continuously over the entire upper end of the partition sheet 2S as in the example shown in FIG. 4, or can be provided intermittently as in the example shown in FIG. 5, or can be provided at only one location (not shown). Instead of or together with this, a rail may be provided on the top surface of the treatment tank 1 and a runner that moves along the rail may be provided, and the upper end of the partition sheet 2S may be suspended and supported by this runner. In the example shown in FIG. 5, the floating body 12 is fixed to the partition sheet 2S by a rivet 2r, but other fixing structures may be used.

[0033] (Sampling port) A first sampling port 8a for sampling the liquid to be treated in the first compartment S1 of the treatment tank 1 and a second sampling port 8b for sampling the liquid to be treated in the second compartment S2 can also be provided respectively. This enables the liquid to be treated in each batch to be sampled and the liquid quality to be confirmed. In this case, it is preferable to provide a liquid quality sensor 13 for detecting the liquid quality of the liquid to be treated D sampled from the sampling ports 8a and 8b, and to control the supply and discharge of the liquid to be treated according to the detection result.

[0034] (Level sensor) Although not shown in the figure, by attaching a level sensor or the like to the upper end of the treatment tank 1, the water level of the liquid to be treated D etc. can be measured. Thereby, the supply and discharge of the liquid to be treated D can also be controlled.

[0035] (Check valve 9) A check valve 9 may be attached to the supply pipeline 4 connected from the outlet of the pump P1 that supplies the liquid to be treated D. Due to the presence of this check valve 9, it is possible to prevent the liquid to be treated D from flowing back even when the pump P1 that supplies the liquid to be treated D stops.

[0036] (Treatment method) Next, a method for treating the liquid D to be treated using the processing device 100 will be described with reference to FIGS. 1 and 2. Now, consider an initial state in which the liquid D to be treated is not stored in the first compartment S1 and the second compartment S2 of the treatment tank 1 in the present processing device 100. First, by operating the first three-way valve V1, the supply / discharge ports 10a and 10b are put in a first supply state in which they communicate with the supply pipeline 4 and do not communicate with the discharge pipeline 5. At the same time, by operating the second three-way valve V2, the supply / discharge ports 11a and 11b are put in a second discharge state in which they communicate with the discharge pipeline 5 and do not communicate with the supply pipeline 4. Then, the supply pump P1 for supplying the liquid D to be treated is activated, and the liquid D to be treated is sent to the supply pipeline 4 (first operation). As a result, the liquid D to be treated is supplied only into the first compartment S1 from the first supply port 10a. In the initial state, if the movable partition 2 is in the first state along the side wall of the treatment tank 1 constituting the second compartment S2, the movable partition 2 does not move. However, in other cases, for example, if the movable partition 2 is in the second state along the side wall of the treatment tank 1 constituting the first compartment S1 in the initial state, the movable partition 2 moves with the supply of the liquid D to be treated, and finally, the movable partition 2 becomes in the first state along the side wall of the treatment tank 1 constituting the second compartment S2. In the first state, as shown in FIGS. 1 and 3, almost the entire inside of the treatment tank 1 becomes the first compartment S1 for storing the liquid D to be treated, and the second compartment S2 does not store the liquid D to be treated and has the minimum volume (for example, almost 0). When the first state is reached and the first compartment S1 reaches a predetermined storage amount, the supply pump P1 is stopped, and the process waits until the treatment of the liquid D to be treated stored in the first compartment S1 is completed. Whether the first compartment S1 has reached the predetermined storage amount can be detected by a water level gauge (not shown) provided in the treatment tank 1.

[0037] When the treatment of the liquid D to be treated stored in the first compartment S1 is completed, by operating the first three-way valve V1, the supply / discharge ports 10a and 10b communicate with the discharge pipeline 5 and do not communicate with the supply pipeline 4, and the first discharge state is set. At the same time, by operating the second three-way valve, the supply / discharge ports 11a and 11b communicate with the supply pipeline 4 and do not communicate with the discharge pipeline 5 to set the second discharge state. Then, the supply pump P1 for supplying the liquid D to be treated is activated to send the liquid D to be treated to the supply pipeline 4 (second operation). As a result, the liquid D to be treated is supplied only from the second supply port 11a into the second compartment S2, and the treated liquid C stored in the first compartment S1 is discharged from the first discharge port 10b. Along with the supply and discharge of the liquid D to be treated, the movable partition 2 moves, and finally the movable partition 2 reaches the second state along the side wall of the treatment tank 1 in the first compartment S1. In the second state, as shown in FIG. 2, almost the entire inside of the treatment tank 1 becomes the second compartment S2 for storing the liquid D to be treated, and the first compartment S1 has completed the discharge of the liquid to be treated and has a minimum volume (for example, almost 0). When the second state is reached and the second compartment S2 reaches a predetermined storage amount, the supply pump P1 is stopped and waiting is performed until the treatment of the liquid D to be treated stored in the second compartment S2 is completed (second supply / discharge liquid step). Whether the second compartment S2 has reached the predetermined storage amount can be detected by a water level gauge (not shown) provided in the treatment tank.

[0038] When the treatment of the liquid D to be treated stored in the second compartment S2 is completed, the process returns to the first operation. In the first operation for the second and subsequent times, the liquid D to be treated is supplied only from the first supply port 10a into the first compartment S1, and the treated liquid C stored in the second compartment S2 is discharged from the second discharge port 11b (first supply / discharge liquid step). Thereafter, by alternately repeating the first supply / discharge liquid step by the above-described first operation and the second supply / discharge liquid step by the second operation across the treatment process of the liquid D to be treated in the treatment tank 1, although it is a batch-type treatment using a single treatment tank 1, the supply and discharge of the liquid can be performed simultaneously. Compared with the conventional method that requires both the time required for supplying one batch amount of the liquid D to be treated and the time required for discharging one batch amount of the treated liquid C, the time required for supplying the liquid D to be treated and discharging the treated liquid C can be significantly shortened.

[0039] When the movable partition 2 is the partition sheet 2S described above, in the first liquid supply / discharge step of simultaneously supplying the liquid to be treated D to the first compartment S1 and discharging the treated liquid C from the second compartment S2, and the second liquid supply / discharge step of simultaneously supplying the liquid to be treated D to the second compartment S2 and discharging the treated liquid C from the first compartment S1, the upper edge of the wall portion 2W of the partition sheet 2S is maintained above the liquid levels of the liquid to be treated D and the treated liquid C in the treatment tank 1 (particularly, so that the liquid levels of the first compartment S1 and the second compartment S2 are maintained at approximately the same level). When the liquid to be treated D is supplied and the treated liquid C is discharged, the movable partition 2 can be moved from the second state to the first state, or from the first state to the second state, along with changes in the storage ratios in the first compartment S1 and the second compartment S2. More specifically, as shown in FIGS. 4 to 6, in the first state, assuming that one surface of the wall portion 2W of the partition sheet 2S contacts the inner surface of the side wall 1W of the treatment tank 1 on one lateral side in the treatment tank 1 and one surface of the bottom portion 2B of the partition sheet 2S contacts the bottom surface of the treatment tank 1, when transitioning to the second state, the wall portion 2W of the partition sheet 2S warps in the opposite direction while the bottom portion 2B of the partition sheet 2S flips, and the other surface (opposite surface) of the wall portion 2W of the partition sheet 2S contacts the inner surface of the side wall 1W of the treatment tank 1 on the other lateral side in the treatment tank 1 and the other surface (opposite surface) of the bottom portion 2B of the partition sheet 2S contacts the bottom surface of the treatment tank 1. Also, at this time, if a floating body 12 is provided at the upper edge of the wall portion 2W of the partition sheet 2S, due to the buoyancy of the floating body 12, the upper edge of the wall portion 2W of the partition sheet 2S is more reliably maintained above the liquid level, and it is preferable because overflow between the first compartment S1 and the second compartment S2 is effectively prevented. Although the supply of the liquid to be treated D and the discharge of the treated liquid C can be adjusted as appropriate, it is preferable that the treated liquid C is discharged by the head pressure accompanying the supply of the liquid to be treated D because the liquid level can be maintained by a simple method.

[0040] When adding the treatment agent A to the liquid D to be treated in the treatment apparatus 100, the treatment agent A is supplied to the supply system of the liquid D to be treated, for example, between the supply pump P1 and the first supply port 10a and the second supply port 11a, more preferably to the common pipeline 4a shown in the figure, so that the liquid D to be treated to which the treatment agent A is added can be supplied into the treatment tank 1. Alternatively, supply ports for directly supplying the treatment agent A to each of the first compartment S1 and the second compartment S2 may be provided in the treatment tank 1 separately from the supply system of the liquid D to be treated. When adding the treatment agent A, in each of the first liquid supply / drainage step and the second liquid supply / drainage step, after waiting until the treatment with the treatment agent A is completed, the process proceeds to the next step. This waiting time may be determined in advance, or for the liquid D to be sampled from the first sampling port 8a or the second sampling port 8b, the quality (for example, water quality) is confirmed by a liquid mass sensor 13 or the like, and when the target quality is reached, the treatment is considered complete and the process proceeds to the next step.

[0041] (First Application Example) FIG. 8 shows an example of a treatment apparatus 200 for treating a liquid D to be treated such as wastewater containing organic substances using ozone gas. By dissolving and reacting ozone gas in the liquid D to be treated, sterilization, deodorization, decolorization, and organic substance decomposition can be performed. More specifically, the treatment apparatus 200 includes a liquid D supply unit 210 for supplying the liquid D to be treated in which ozone gas is dissolved, and a reaction unit 220 for storing the liquid D to be treated in which ozone gas is dissolved and allowing the reaction to proceed. The liquid D supply unit 210 includes a liquid D storage tank 6 for storing the liquid D to be treated, an ozone gas dissolution unit 30 for dissolving ozone gas in the liquid D to be treated, a supply pump P3 for pumping up the liquid D stored in the liquid D storage tank 6 and supplying it to the ozone gas dissolution unit 30, and an ozone gas supply device 20 for supplying ozone gas to the ozone gas dissolution unit 30. The reference numeral 6s indicates a strainer for preventing the pumping up of solids.

[0042] As long as the ozone gas can be dissolved in the liquid D to be treated, the dissolution method of the ozone gas dissolution section 30 can use known methods such as the bubble dissolution method, the filling tank method, and the contact membrane method without any particular limitation. The ozone gas supply device 20 that supplies ozone gas to the ozone gas dissolution section 30 is not particularly limited. For example, as shown in the illustrated example, the compressed air supplied from the compressor 21 is supplied to the ozone generator 23 through the PSA 22 oxygen concentrator 22, and the ozone generator 23 generates ozone from high-concentration oxygen and sends it out. A device can be used. Reference numeral 25 indicates a flow path for supplying the ozone gas sent out from the ozone gas supply device 20 to the ozone gas dissolution section 30, and reference numeral 24 indicates a check valve provided in the flow path.

[0043] In the ozone gas dissolution section 30, ozone gas supplied from the ozone gas supply device 20 is dissolved (mixed) in the liquid D to be treated supplied from the liquid storage tank 6 for the liquid to be treated. The liquid D to be treated in which ozone gas is dissolved in the ozone gas dissolution section 30 is supplied from the first supply port 10a provided in the treatment tank 1 of the reaction section 220 to the first compartment S1 in the treatment tank 1 or from the second supply port 11a to the second compartment S2 and stored, whereby the decomposition reaction of the organic matter proceeds. That is, the organic matter contained in the liquid D to be treated is decomposed by ozone. In addition, microorganisms such as bacteria contained in the liquid D to be treated are sterilized (lysed) by ozone. Furthermore, odorous substances (for example, volatile organic compounds (Volatile Organic Compounds: abbreviated as VOCs), etc.) contained in the liquid D to be treated are also destroyed by ozone for deodorization and odor elimination. In order to microbubble the ozone gas mixed in the liquid D to be treated, a microbubble generation nozzle can be interposed in the flow path of the liquid D to be treated from the ozone gas dissolution section 30 to the treatment tank 1, for example, the ozone gas dissolution section 30, the first supply port 10a, and the second supply port 11a.

[0044] If the water quality in treatment tank 1 reaches the target quality or if a predetermined time has elapsed, the treated liquid C in treatment tank 1 can be discharged from treatment tank 1 for reuse or drainage. Since the treatment tank 1 of reaction section 220 is as described above, the same reference numerals are used and the description thereof is omitted. Regarding the process from supplying the liquid to be treated D until it is made to reach the target quality by adding ozone gas and then discharged as one batch, by alternately using the first section S1 and the second section S2 for treatment, the supply of the liquid to be treated D to treatment tank 1 and the discharge of the treated liquid C from treatment tank 1 can be carried out simultaneously.

[0045] (Second application example) FIG. 9 shows an example of a treatment apparatus 300 for treating a liquid to be treated D such as wastewater containing calcium using carbon dioxide. By dissolving carbon dioxide in the liquid to be treated D and causing a reaction, calcium can be removed from wastewater containing calcium such as water jet wastewater, road cutter wastewater, and landfill wastewater. Therefore, the purified water treated by this treatment apparatus 300 can be reused, for example, in the water jet method, and can also be discharged into the sea, rivers, etc.

[0046] This treatment apparatus 300 includes a treatment tank 1, a first filtration device 310, and a second filtration device 330. The liquid to be treated D is first sent to the first filtration device 310 by a pump P4. The reference numeral V10 indicates a flow rate adjustment valve 301 provided on the outlet side of the first filtration device 310. The first filtration device 310 is a device mainly for removing foreign substances such as sand, cement, and garbage contained in the liquid to be treated D.

[0047] As the first filtration device 310 and the second filtration device 330, various filtration devices equipped with filtration membranes such as UF membranes (ultrafiltration membranes), MF membranes (microfiltration membranes), and RO membranes (reverse osmosis membranes) can be used. As the first filtration device 310 and the second filtration device 330, those capable of removing particles of 0.3 μm or more are preferable. The first filtration device 310 and the second filtration device 330 may be the same filtration device or different filtration devices.

[0048] The liquid D to be treated filtered by the first filtration device 310 is supplied from the first supply port 10a provided in the treatment tank 1 to the first compartment S1 in the treatment tank 1 or from the second supply port 11a to the second compartment S2 via the second filtration device 330 and the carbon dioxide mixing unit 320 in this order by the pump P5 through the supply pipe 4. A supply on-off valve V3 is provided in the supply pipe 4 that communicates only with the first supply port 10a, and a supply on-off valve V4 is provided in the supply pipe 4 that communicates only with the second supply port 11a. Carbon dioxide is blown into the liquid D to be treated in the carbon dioxide mixing unit 320. In the carbon dioxide mixing unit 320, it is preferable to control the amount of carbon dioxide blown in order to control the reaction between calcium and carbon dioxide. For this reason, the carbon dioxide mixing unit 320 in the illustrated example includes a storage tank 321 filled with carbon dioxide, a flow rate adjustment valve (control means) V11 that controls the flow rate of carbon dioxide, a flow meter 322 that measures the flow rate and a pH meter 323 that measures the pH provided on the upstream side of the carbon dioxide blowing position (the downstream side of the second filtration device in the illustrated example) for the previous liquid D to be treated, and a bubble column 324. By controlling the opening degree of the flow rate adjustment valve V11 based on the measured values (flow rate and pH) of the flow meter 322 and the pH meter 323, the amount of carbon dioxide blown into the liquid D to be treated can be controlled.

[0049] The treatment tank 1 is provided with a first discharge port 10b and a second discharge port 11b that communicate with the first compartment S1 and the second compartment S2 respectively. A discharge on-off valve V7 is provided in the discharge pipeline 5 that only communicates with the first discharge port 10b, and a supply on-off valve V8 is provided in the discharge pipeline 5 that only communicates with the second discharge port 11b. Further, the treatment tank 1 is provided with circulation discharge ports 10c, 11c that communicate with the first compartment S1 and the second compartment S2 respectively. The circulation discharge ports 10c, 11c are respectively connected to the flow path leading from the first filtration device 310 to the circulation pump P5 via the circulation path 7, and circulation path on-off valves V5, V6 are respectively provided in this circulation path 7. When the supply on-off valve (V3 in the illustrated state) that communicates with the compartment used in the batch (the first compartment S1 in the illustrated state) is opened and the circulation path on-off valves V5, V6 are closed, the liquid to be treated D supplied from the pump P4 passes through the first filtration device 310, the circulation pump P5, the second filtration device 330, and the carbon dioxide mixing section 320, and after carbon dioxide gas is mixed, it is supplied to and stored in the compartment used in the batch in the treatment tank 1, so that the reaction between calcium and carbon dioxide proceeds and calcium carbonate is generated. When the treatment tank 1 reaches the storage amount for one batch, the supply pump P4 and the flow rate adjustment valve V10 are closed, and only the circulation path on-off valve (the on-off valve V5 of the circulation path 7 that communicates with the first compartment S1 in the illustrated state) that communicates with the compartment used in the batch is opened. Whether the treatment tank 1 has reached the storage amount for one batch can be detected by a water level gauge (not shown) provided in the treatment tank 1. Thereby, the liquid to be treated D in the treatment tank 1 is supplied to the second filtration device 330 by the circulation pump P5, and after the calcium carbonate contained in the liquid to be treated D is removed by this second filtration device 330, it is returned to the same compartment of the treatment tank 1 through the carbon dioxide mixing section 320 again. During circulation, the blowing of carbon dioxide may be continued, or the blowing of carbon dioxide by the carbon dioxide blowing section may be stopped at the start or during the circulation.

[0050] During the circulation of the liquid to be treated, the liquid to be treated D in the treatment tank 1 is sampled through the aforementioned sampling port or the like, and the calcium ion concentration of the liquid to be treated D is measured by an ion concentration meter (not shown). When the measured value of the ion concentration meter is less than a predetermined value, for example, less than 50 g / L, the reaction is considered complete, the circulation pump P5 is stopped, the circulation path on-off valve (V5 in the illustrated state) leading to the section used in the batch is closed, and the discharge on-off valve (V7 in the illustrated state) of the discharge pipeline 5 connected only to the discharge port (the first discharge port 10b in the illustrated state) leading to the section used in the batch is opened. As a result, the treated liquid C from which calcium has been removed is discharged from the treatment tank 1. The treated liquid C can be discharged from the treatment tank 1 and reused or drained. Also, simultaneously with the start of the discharge of the treated liquid C, the supply on-off valve (V4 in the illustrated state) leading to the section to be used in the next batch (the second section S2 in the illustrated state) is opened, the circulation path on-off valves V5 and V6 are closed, the flow rate adjustment valve V10 is opened, and the supply of the liquid to be treated D by the supply pump P4 is started. As a result, simultaneously with the discharge of the treated liquid in the first section S1, the liquid to be treated D is supplied to the second section S2. Since the treatment tank 1 is as described above, the same reference numerals are used and the description is omitted. However, until the liquid to be treated D is made to reach the target quality by adding carbon dioxide and discharged, one batch is defined as such. By alternately using the first section S1 and the second section S2 for treatment, the supply of the liquid to be treated D to the treatment tank 1 and the discharge of the treated liquid C from the treatment tank 1 can be performed simultaneously.

Industrial Applicability

[0051] The present invention can be used as an apparatus and method for treating a liquid to be treated.

Explanation of Reference Numerals

[0052] 1...Treatment tank, 1B...Bottom wall, 1S...Side wall, 2...Movable partition, 2B...Bottom part, 2S...Wall part, 2S...Partition sheet, 4...Supply pipeline, 4a...Common pipeline, 4b...Branch pipeline, 5...Discharge pipeline, 6...Liquid to be treated storage tank, 7...Circulation flow path, 8...Sampling port, 9...Check valve, V1...First three-way valve, V2...Second three-way valve, 10a...First supply port, 10b...First discharge port, 11a...Second supply port, 11b...Second discharge port, D...Liquid to be treated, C...Treated liquid, P1~P3...Pumps, 20...Ozone gas supply device, 20a...Ozone gas generator, 21...Compressor, 22...PSA, 23...O3 generator, 24...Check valve, 25...Ozone gas supply pipeline, 6s...Strainer, 27...Pressure control device, 30...Ozone gas dissolution part, 12...Floating body, 13...Liquid mass sensor, 310...First filtration device, 320...Carbon dioxide mixing part, 321...Storage tank, 322...Flow meter, 323...pH meter, 330...Second filtration device, V3~V8...On-off valves, V10, V11...Flow control valves, S1...First section, S2...Second section, F...Vertical plane, L1, L2...Intersection lines, 100, 200, 300...Treatment devices, 210...Liquid to be treated supply part, 220...Reaction part.

Claims

1. A treatment tank for storing a liquid to be treated; a movable partition that divides the inside of the treatment tank into a first compartment and a second compartment that are liquid-blocking so that liquid does not flow between them; a first supply port that supplies the liquid to be treated to the first compartment; a first outlet for discharging treated liquid from the first compartment; a second supply port that supplies the liquid to be treated to the second compartment; a second outlet for discharging treated liquid from the second compartment; The movable partition is a flexible partition sheet, The partition sheet has a semi-cylindrical wall portion that conforms to the shape of the inner side wall of the treatment tank across a pair of intersections between a vertical plane that horizontally bisects the inside of the treatment tank and the inner side wall of the treatment tank, and a bottom portion that extends from a lower edge of the wall portion along the bottom surface of the treatment tank to the vertical plane, The upper edge of the wall portion is spaced downward from the top surface of the treatment tank, the wall portion is fixed liquid-tightly to the inner side wall of the treatment tank only at portions of the inner side wall of the treatment tank that correspond to the pair of intersection lines with the vertical plane, The bottom is fixed liquid-tightly to the bottom surface of the treatment tank only at a portion corresponding to a line of intersection between the bottom surface of the treatment tank and the vertical plane, the movable partition is movable between a first state in which the movable partition extends along a side wall of the treatment tank in the second compartment and a second state in which the movable partition extends along a side wall of the treatment tank in the first compartment while maintaining a liquid-blocking state between the first compartment and the second compartment; In the first state, one surface of the wall portion contacts the inner surface of the side wall of the treatment tank and one surface of the bottom portion contacts the bottom surface of the treatment tank on one lateral side of the treatment tank, and in the second state, the other surface of the wall portion contacts the inner surface of the side wall of the treatment tank and the other surface of the bottom portion contacts the bottom surface of the treatment tank on the other lateral side of the treatment tank, an upper edge of the wall portion is positioned above the liquid levels of the liquid to be treated and the treated liquid in the treatment tank; A treatment device for a liquid to be treated, comprising:

2. A float is provided at the upper end of the partition sheet. The treatment apparatus for a liquid to be treated according to claim 1.

3. A treatment tank for storing a liquid to be treated; a movable partition that divides the inside of the treatment tank into a first compartment and a second compartment that are liquid-blocking so that liquid does not flow between them; a first supply port that supplies the liquid to be treated to the first compartment; a first outlet for discharging treated liquid from the first compartment; a second supply port that supplies the liquid to be treated to the second compartment; a second outlet for discharging treated liquid from the second compartment; the movable partition is movable between a first state in which the movable partition extends along a side wall of the treatment tank in the second compartment and a second state in which the movable partition extends along a side wall of the treatment tank in the first compartment while maintaining a liquid-blocking state between the first compartment and the second compartment; A supply pump for the liquid to be treated; a supply line communicating with an outlet of the supply pump, the first supply port, and the second supply port; the supply pipe includes a common pipe leading to an outlet of the supply pump, and a first branch pipe branching from the common pipe leading to the first supply port and a second branch pipe branching from the common pipe leading to the second supply port; a treatment agent supply means for supplying a treatment agent to the common pipe; A treatment device for a liquid to be treated, comprising:

4. A first sampling port for sampling the liquid to be treated in the first compartment and a second sampling port for sampling the liquid to be treated in the second compartment are provided. The treatment device for a liquid to be treated according to claim 1 or 3.

5. Using the treatment device for the liquid to be treated according to claim 1 or 3, a first liquid supply / drain step including simultaneously supplying the liquid to be treated from the first supply port to the first compartment and discharging the treated liquid stored in the second compartment from the second discharge port while moving the movable partition from the second state to the first state, and a second liquid supply / drain step including simultaneously supplying the liquid to be treated from the second supply port to the second compartment and discharging the treated liquid stored in the first compartment from the first discharge port while moving the movable partition from the first state to the second state, the first liquid supply / drain step being performed alternately with a treatment step of the liquid to be treated in the treatment tank in between. A method for treating a liquid to be treated.

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