JP2011177708A - Apparatus for treating rinser waste water and method of sterilizing apparatus for treating rinser waste water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rinser waste water recovery apparatus of an aseptically filling equipment being stably operated by providing a function to effectively perform the hot water sterilization to the whole water conduction route of the apparatus. <P>SOLUTION: The rinser recovery apparatus is provided with a water treatment unit 30 and a hot water supply unit 40. The water treatment unit 30 has a plurality of water treatment equipment such as a peroxide decomposition tower 31 or the like and a hot water sterilization route for dividing the water conduction route including the water treatment equipment of the water treatment unit 30 and performing hot water sterilization. The hot water supply unit 40 is provided with: a water heating device 41 for heating water for hot water sterilization; a water supply pipe 42 for hot water sterilization which supplies the water for hot water sterilization to the water heating device 41; and a hot water supply pipe 43 for supplying hot water to the plurality of hot water sterilization route from the water heating device 41. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to, for example, a rinser drainage collection system that collects drainage from a rinser installed in an aseptic filling facility such as a soft drink, and more specifically, an apparatus that is particularly suitable for processing and reusing wastewater. About.

  In aseptic filling equipment such as soft drinks, a container to be filled with a beverage is sterilized and washed with an apparatus called a rinser, and then a separately heat-sterilized beverage is filled in a sterile state by a filling machine. In this rinser, a container is sterilized with a sterilizing agent containing a peroxide such as hydrogen peroxide or peracetic acid, and then the container is rinsed with sterile water. The water used in the rinser is safe and high quality water equivalent to the raw water of soft drinks, that is, “drinkable water” defined by the Food Sanitation Law, and is suitable for washing after ultra-high temperature sterilization in aseptic water production equipment Sterile water cooled to temperature is used.

  Here, in general, in a rinser of a beverage aseptic filling facility, a beverage container is continuously sterilized and rinsed in conjunction with a beverage filling machine. For this reason, waste water containing peroxides such as hydrogen peroxide and peracetic acid is continuously discharged from the rinser. The kind and concentration of pollutants in the waste water from the rinser (rinser waste water) vary depending on the method of sterilization and rinsing with the rinser.

For example, Patent Document 1 discloses a conventional technique for treating the rinser drainage containing the peroxide. In the treatment apparatus described in Patent Document 1, the peracetic acid-containing wastewater is passed through an activated carbon tower to reduce peracetic acid to acetic acid, and then the activated carbon tower effluent is passed through a cation exchange tower to remove coexisting cations. Further, the effluent from the cation exchange tower is passed through the anion exchange tower to remove acetic acid produced by the reduction of peracetic acid and acetic acid derived from the raw water, thereby obtaining reusable treated water.
As another technique described in Patent Document, a processing apparatus for removing acetic acid generated by reduction of peracetic acid using a reverse osmosis membrane has been proposed (for example, see Patent Document 2).

On the other hand, there are, for example, Patent Literature 3 and Patent Literature 4 as conventional techniques for preventing the growth of bacteria in activated carbon towers and ion exchange towers. In these techniques, the activated carbon tower and the ion exchange tower are respectively sterilized by passing hot water through the activated carbon tower and the ion exchange tower.
Furthermore, in the technique described in Patent Document 5, portable water (tap water) is heated by a heater, and hot water is sterilized by passing hot water through the entire water passage. This water flow path forms a system for producing a sterile aqueous solution configured by combining a prefilter, an adsorbing element, a reverse osmosis unit, and an ion exchange module.

JP 2001-129564 A JP 2001-170657 A JP-A-6-71249 JP 2003-88765 A Japanese Patent No. 2997099

  In the technique described in Patent Document 1, acetic acid generated by reduction of peracetic acid and a counter ion of acetic acid derived from raw water are removed by a cation exchange column and acetic acid is removed by an anion exchange column. However, in the technique described in Patent Document 1, since measures for preventing the growth of bacteria in the collection apparatus are not taken, the bacteria propagate in the collection apparatus, and the general bacteria in the treated water are “drinkable water”. ”Exceeds the reference value (100 / ml or less). Moreover, in the activated carbon tower and the ion exchange tower, the pressure loss at the time of water flow increases due to the propagation of the bacteria, and there is a possibility that the flow rate of water flow or the processing performance is lowered due to drift.

  In addition, according to the technique described in Patent Document 2, after peroxyacetic acid in wastewater is reduced and decomposed to acetic acid in a peracetic acid decomposition tank filled with a peracetic acid reduction catalyst (activated carbon or the like), the treated water is reverse osmosis. Acetate ions are removed by supplying to the membrane recovery device. However, even in the technique described in Patent Document 2, since measures for preventing the growth of bacteria in the collection apparatus are not taken, the bacteria propagate in the collection apparatus, and the general bacteria in the treated water are “drinkable”. There is a problem that the standard value of “water” is exceeded. In the peracetic acid decomposition tank, the pressure loss during water flow increases due to the propagation of bacteria, and there is a risk that the flow rate will decrease and the processing performance will decrease due to drift. Breeding may block the reverse osmosis membrane, resulting in a decrease in treatment flow rate and quality of treated water.

  Here, in the rinser drainage recovery apparatus containing peroxides such as Patent Document 1 and Patent Document 2, acetate ions (organic matter) generated by the decomposition of peracetic acid are used as the treated water in the activated carbon tower or the peracetic acid decomposition tank. Since mixed organic substances and organic substances derived from makeup water are included, bacterial growth is likely to occur. In addition, this treated water contains oxygen generated by the decomposition of peracetic acid and hydrogen peroxide, and furthermore, since the water temperature is about 40-50 ° C. and conditions suitable for the growth of bacteria are available, Is likely to occur.

  According to the techniques described in Patent Literature 3 and Patent Literature 4, the activated carbon tower and the ion exchange tower can be sterilized by passing hot water through the activated carbon tower and the ion exchange tower, respectively. However, with these techniques, although the activated carbon tower and the ion exchange tower can be individually sterilized with hot water, they cannot be sterilized with hot water over the entire water flow path configured by combining these water treatment devices.

  On the other hand, as in the technique described in Patent Document 5, a system in which hot water is passed through the entire water flow path is suitable for a sterile water production apparatus in which raw water is clean tap water and the apparatus scale is small. However, when this technology is applied to waste water containing various components as raw water and applied to a rinser waste water collecting apparatus for aseptic filling equipment having a relatively large equipment scale of about 20 to 30 m 3 / h, there are some problems. Occurs. First, when the water treatment device through the rinser drainage is sterilized with hot water, contaminants accumulated in the water treatment device may be detached and mixed into the hot water, which may contaminate the downstream water treatment device. In addition, since the equipment scale is large, it takes a long time to raise the temperature until the most downstream water treatment equipment reaches the predetermined hot water sterilization temperature and lower the temperature to the original temperature. End up. As a result, hot water sterilization requires a large amount of heat energy and a large amount of water, which is not economical.

  Thus, the conventional rinser drainage recovery device for aseptic filling equipment has no efficient hot water sterilization function for preventing the growth of bacteria in the device and performing stable operation of the device. However, from the standpoint of reducing the load on the water environment by effectively using water resources and reducing the amount of wastewater, the need for, for example, the collection of rinser wastewater from aseptic filling equipment is increasing.

The present invention has been made to solve the technical problems as described above, and the object of the present invention is to efficiently perform hot water sterilization with respect to the water passage of the apparatus during the treatment of the rinser drainage. There is to do.

For this purpose, the present invention is a treatment apparatus for rinser wastewater containing peroxide, comprising a water treatment unit and a hot water supply unit. The water treatment unit is a rinser as a water treatment device. A peroxide decomposition tower filled with a peroxide decomposition catalyst for decomposing peroxide contained in waste water, and an ion exchange tower for removing impurities contained in treated water from the peroxide decomposition tower At least one of a reverse osmosis membrane module unit and a nanofiltration membrane module unit; The hot water supply unit includes a water heating device for heating the hot water sterilization water, and hot water for supplying the hot water sterilization water to the water heating device. Sterilization water supply piping and From the water heating device to a plurality of hot water sterilization path and a hot water supply pipe for supplying hot water.

  Here, this hot water supply unit includes a water heating device for performing a one-time hot water sterilization of water treatment equipment, and a hot water sterilization water supply pipe for supplying hot water sterilization water to the water heating device. It is characterized by. Further, this hot water supply unit includes a hot water tank, a hot water pump, a water heating device, and a hot water sterilization water supply pipe for supplying hot water sterilization water to the hot water tank. It is preferable that the hot water can be reused. Further, the hot water supply unit may be characterized in that the hot water supply pipe is provided with a bubble separator and a gas discharge valve for removing bubbles in the hot water from the hot water.

  In addition, this water treatment unit includes, as water treatment equipment, a deaeration unit for removing gas contained in the treated water of the peroxide decomposition tower, an ultraviolet sterilizer for sterilizing bacteria in the water, and an ion exchange tower. It includes at least one of cartridge filters for removing a trace amount of suspended matter contained in the treated water. Furthermore, an operation panel for selecting a path for performing hot water sterilization from a plurality of hot water sterilization paths can be included.

From another viewpoint, the processing apparatus rinser wastewater to which the present invention is applied, a plurality of water treatment equipment, each of which is connected via a water flow path with processing the rinser wastewater, the plurality of water treatment It is characterized by comprising a hot water sterilization path for dividing into one or a plurality of water treatment equipment constituting the equipment and sterilizing with hot water.

Here, the hot water sterilization path may be characterized by hot water sterilization of the water passage along with the unit of one or a plurality of water treatment devices to be divided.
In addition, hot water sterilization may be performed at a different frequency for each unit.
Furthermore, hot water sterilization can be performed using hot water having different water quality for each unit.

On the other hand, the present invention is a rinser wastewater treatment apparatus containing a peroxide, comprising a water treatment unit including a plurality of water treatment devices and a hot water supply unit, the water treatment unit comprising a rinser wastewater An activated carbon tower that decomposes peroxides by contacting the activated carbon, and a hydrothermal sterilization path that divides the activated carbon tower into units of one or more water treatment devices and sterilizes the activated carbon tower with hot water. The water supply unit is characterized by supplying hot water to the hot water sterilization path.

  Here, the hot water sterilization path includes a transient hot water sterilization path and a circulating hot water sterilization path, and the hot water supply unit includes any of the transient hot water sterilization path and the circulating hot water sterilization path. It is possible to select hot water sterilization.

Further, when grasping the invention from the category of the method, the present invention is a sterilization method of a rinser wastewater treatment apparatus including a plurality of water treatment devices for treating a rinser wastewater containing a peroxide. A step of determining a unit to be subjected to hot water sterilization for performing hot water sterilization by dividing into one or a plurality of water treatment device units constituting the water treatment device, and different water quality for each determined unit And / or applying hydrothermal sterilization at different frequencies.

Here, the step of performing the hot water sterilization may be performed by a transient hot water sterilization that does not reuse hot water or a circulating hot water sterilization that reuses hot water.
Further, the step of performing the hot water sterilization may be characterized in that hot water is circulated by selecting the same direction or reverse direction as the water flow of the rinser drainage treatment for each unit.

According to the present invention , it is possible to realize a rinser wastewater treatment in which the stability of the peroxide decomposition treatment is significantly improved as compared with the case where the present invention is not adopted .

It is the figure which showed the whole structure of the rinser waste_water | drain collection | recovery system with which this Embodiment is applied. It is the block diagram which detailed 1st Embodiment of the rinser waste_water | drain collection | recovery apparatus. It is the block diagram which detailed 2nd Embodiment of the rinser waste_water | drain collection | recovery apparatus. It is the block diagram which detailed 3rd Embodiment of the rinser waste_water | drain collection | recovery apparatus in detail. It is a block diagram which explained in full detail the 4th Embodiment of the rinser waste_water | drain collection | recovery apparatus.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
[Embodiment 1]
FIG. 1 is a diagram showing an overall configuration of a rinser drainage recovery system 1 to which the present embodiment is applied. A rinser drainage recovery system 1 shown in FIG. 1 includes, for example, an aseptic filling facility rinser 10 for sterilizing and washing containers such as bottles and caps filled with beverages, and a wastewater treatment apparatus for recovering and reusing the rinser drainage. And a rinser drainage recovery device 20. The rinser drainage recovery system 1 includes a rinser drainage receiving tank 11 that receives the rinser drainage discharged from the aseptic filling equipment rinser 10, and a rinser drainage pump 12 that supplies the rinser drainage of the rinser drainage receiving tank 11 to the rinser drainage recovery device 20. I have. Furthermore, a treated water tank 13 that receives treated water treated by the rinser drainage recovery apparatus 20 and a treated water pump 14 that supplies treated water from the treated water tank 13 to the downstream side are provided. Furthermore, the relay tank 15 which combines the treated water supplied by the treated water pump 14 and the makeup water supplied from the outside is provided. Furthermore, the raw | natural water pump 16 which supplies the water of the relay tank 15 downstream is provided, and the aseptic water production apparatus 17 which sterilizes the water supplied by the raw | natural water pump 16. FIG.

  In the rinser drainage recovery system 1 shown in FIG. 1, the rinser drainage discharged from the aseptic filling facility rinser 10 is received by the rinser drainage receiving tank 11 and sent to the rinser drainage recovery device 20 by the rinser drainage pump 12. The rinser drainage sent to the rinser drainage recovery device 20 is processed by the rinser drainage recovery device 20 and then sent to the relay tank 15. In the relay tank 15, the rinser drainage recovery device 20 discharges (drains) out of the apparatus by washing the peroxide decomposition tower (described later) and regenerating the ion exchange tower (described later) or by membrane separation in the reverse osmosis membrane module unit. Make-up water is added to compensate for the amount of water. In the relay tank 15, the treated water from the rinser drainage recovery device 20 and the makeup water to be supplemented are combined and stored as raw water of the sterile water production device 17. The raw water sent from the relay tank 15 to the sterile water production apparatus 17 by the raw water pump 16 is subjected to ultra high temperature sterilization processing by the sterile water production apparatus 17. Thereafter, it is cooled to a temperature suitable for cleaning, sent to the aseptic filling equipment rinser 10 and used for rinsing containers sterilized with a peroxide-containing disinfectant.

  Here, the flow rate of the rinser drainage discharged from one beverage filling line is, for example, 20 to 30 m 3 / h, and the temperature is, for example, 40 to 50 ° C. The type and concentration of contaminants in the rinser drainage differ depending on the method of sterilization and rinsing in the aseptic filling facility rinser 10. For example, in a relatively low concentration rinser wastewater, peracetic acid is not detected, the hydrogen peroxide concentration is 5 to 50 mg / L, the acetic acid concentration is about 0.1 to 0.3 mg / L, and the electric conductivity is 0.2 to 0.2. It is 0.4 mS / m at 25 ° C. and a pH of about 5.5 to 7.5. On the other hand, a relatively high concentration rinser drainage has a peracetic acid concentration of 20-50 mg / L, a hydrogen peroxide concentration of 50-100 mg / L, an acetic acid concentration of 50-100 mg / L, and an electrical conductivity of 5-10 mS / m. at 25 ° C. and pH of about 3.5 to 4.5.

The configuration of the water treatment equipment used in the water treatment unit (described later) of the rinser wastewater recovery apparatus 20 is determined in consideration of the quality of the treated water, the water recovery rate, the installation area, etc. in addition to the wastewater quality described above.
The makeup water added in the relay tank 15 is water suitable for drinking. Examples of the water suitable for beverages include water obtained by treating activated water with activated carbon to remove residual chlorine, water obtained by treating groundwater so as to be suitable for beverages, or treating these waters with an ion exchange treatment device or a reverse osmosis membrane treatment. Demineralized water treated with an apparatus or the like is used. In particular, as demineralized water having a TOC (organic carbon) lower than that of tap water, for example, ion-exchanged water having an electric conductivity of 1 mS / m at 25 ° C. or lower is suitable for circulating water.

-First embodiment-
FIG. 2 is a configuration diagram detailing the first embodiment of the rinser drainage recovery apparatus 20. The rinser wastewater recovery apparatus 20 to which the first embodiment is applied includes a water treatment unit 30 to which a plurality of water treatment devices for treating the rinser wastewater are connected via a water passage, and water constituting the water treatment unit 30. And a hot water supply unit 40 for sterilizing the processing equipment with hot water. The hot water supply unit 40 supplies hot water to the water treatment unit 30 through a plurality of hot water sterilization paths for dividing the water treatment unit 30 into one or a plurality of water treatment devices and sterilizing the hot water. is doing.

  The water treatment unit 30 includes a peroxide decomposition tower 31 that decomposes peroxide contained in the rinser drainage discharged from the rinser drainage receiving tank 11 as a water treatment device. The peroxide decomposition tower 31 is filled with a peroxide decomposition catalyst for decomposing peracetic acid, hydrogen peroxide and the like (peroxide). The peroxide decomposition catalyst is not particularly limited as long as it can decompose peroxides such as peracetic acid and hydrogen peroxide. For example, a noble metal-supported catalyst such as activated carbon or platinum, a manganese-supported catalyst, or the like is used. Can do. Moreover, when the waste water containing a peroxide is a comparatively high density | concentration, it is preferable to attach the pH adjuster which adjusts the pH of waste water to 8-10 in the upstream of a peroxide decomposition tower. Thereby, the decomposition of the peroxide in the peroxide decomposition tower is promoted, and the peroxide can be removed more stably.

  In addition, the water treatment unit 30 includes at least one of an ion exchange tower for removing impurities contained in the treated water from the peroxide decomposition tower 31, a reverse osmosis membrane module unit, and a nanofiltration membrane module unit. It is out. As the ion exchange tower, in the rinser drainage recovery apparatus 20 shown in FIG. 2, a cation exchange tower 32 filled with a cation exchange resin for removing a cationic substance and an anion exchange resin for removing an anionic substance are provided. And an anion exchange column 34 packed therein. The ion exchange tower used here is characterized in that the wastewater recovery rate can be increased as compared with the reverse osmosis membrane module unit. On the other hand, it is preferable to use a reverse osmosis membrane device instead of the ion exchange device in that the device can be continuously operated. The nanofiltration membrane module unit is suitable when the ionic impurity concentration in the peroxide decomposition tower treated water is low. Further, when the concentration of ionic impurities in the treated water from the peroxide decomposition tower 31 is high, it is also effective to have a device configuration in which an ion exchange tower, a reverse osmosis membrane module unit, and a nanofiltration membrane module unit are combined. .

In addition, it is preferable to select an appropriate model for the type of ion exchange tower included as the water treatment device of the water treatment unit depending on the water quality of the rinser wastewater and the treatment flow rate. According to the example shown in FIG. 2, as will be described later, a degassing tower is arranged between the cation exchange tower 32 and the anion exchange tower 34, and the oxygen gas generated in the peroxide decomposition tower 31 and the cation exchange tower are arranged. 32 is preferable in that it can be removed together with carbon dioxide gas generated from bicarbonate ions.
As another embodiment, a mixed bed type in which a cation exchange resin for removing a cationic substance and an anion exchange resin for removing an anionic substance are filled, and these resins are mixed and supplied to water. An ion exchange tower can also be provided. According to such a configuration, the ion exchange tower can be constituted by one tower, which is excellent in that space can be saved.
As yet another embodiment, it is possible to employ a configuration in which an anion exchange column filled with an anion exchange resin for removing an anionic substance is provided. This configuration is suitable when the ionic impurities in the treated water from the peroxide decomposition tower 31 are mainly acetic acid and acetate ions.

  The rinser wastewater recovery apparatus 20 includes an air stripping tower 33 as a degassing unit described above between the cation exchange tower 32 and the anion exchange tower 34. When peroxide is decomposed in the peroxide decomposition tower 31, oxygen gas is generated. By including a degassing unit (air stripping tower 33) as a water treatment device of the water treatment unit 30, the peroxide Oxygen gas generated by the decomposition of the peroxide in the decomposition tower 31 can be removed, and the generation of bubbles in the subsequent water treatment unit 30 can be prevented. Further, if a degassing unit (air stripping tower 33) is provided on the downstream side of the cation exchange tower 32, carbon dioxide gas generated from bicarbonate ions can be removed in the cation exchange tower 32, and the anion exchange resin in the anion exchange tower 34 can be removed. This is preferable in that the load can be reduced. The air stripping tower 33 has a simple structure and is compact, and is excellent in economic efficiency when used as a deaeration unit. As the degassing unit, a membrane degassing module unit can be used instead of the air stripping tower 33. In the membrane degassing module unit, a gas phase portion and a liquid phase portion are configured via a hydrophobic gas permeable membrane. And if this structure is employ | adopted, since a gas phase part can be depressurized and deaerated, it is preferable at the point which does not have a possibility of mixing of the odor component etc. to the treated water from external air.

Furthermore, the rinser waste water recovery apparatus 20 is a small amount of suspension contained in the treated water of the ion exchange tower as a water treatment device of the water treatment unit 30 including an ion exchange tower (such as the cation exchange tower 32 and the anion exchange tower 34). A cartridge filter 35 for removing the substance is provided. The water treatment unit 30 that does not include the reverse osmosis membrane module unit or the nanofiltration membrane module unit is particularly preferable in that the suspended matter contained in the ion exchange tower treated water can be removed.
Furthermore, the rinser drainage recovery apparatus 20 includes an ultraviolet sterilizer 36 for sterilizing bacteria in the water. By providing this ultraviolet sterilizer 36, bacterial growth in the treated water can be suppressed.
As described above, the water treatment unit 30 including the peroxide decomposition tower 31, the cation exchange tower 32, the air stripping tower 33, the anion exchange tower 34, the cartridge filter 35, and the ultraviolet sterilizer 36 as the water treatment equipment is water The recovery rate can be very high (for example, 95 to 97%).

  A plurality of such water treatment devices are connected via a water passage. And the whole water flow path | route including the water treatment apparatus of the water treatment unit 30 is divided | segmented, and it has the several hot-water sterilization path | route for carrying out the hot water sterilization separately in a division | segmentation unit. Each of these hot water sterilization paths includes hot water inlet valves 37-1 to 37-3 and hot water outlet valves 38-1 to 38-4, respectively. In the first embodiment shown in FIG. 2, a first hot water inlet valve 37-1 is provided between the peroxide decomposition tower 31 and the cation exchange tower 32, and the cation exchange tower 32 and the air stripping tower 33 are provided. The 2nd hot water inlet valve 37-2 is provided between these. Further, a third hot water inlet valve 37-3 is provided between the anion exchange tower 34 and the cartridge filter 35. In the first embodiment shown in FIG. 2, a first hot water outlet valve 38-1 is provided between the rinser drain pump 12 and the peroxide decomposition tower 31. Further, a second hot water outlet valve 38-2 is provided between the peroxide decomposition tower 31 and the cation exchange tower 32 and upstream of the first hot water inlet valve 37-1 in the water passage. Provided. Furthermore, a third hot water outlet valve 38-3 is provided between the air stripping tower 33 and the anion exchange tower 34, and is downstream of the water passage of the ultraviolet sterilizer 36 and before the treated water tank 13. A fourth hot water outlet valve 38-4 is provided on the side. Hot water that has passed through the first hot water outlet valve 38-1, the second hot water outlet valve 38-2, the third hot water outlet valve 38-3, and the fourth hot water outlet valve 38-4 is Then, it is discharged out of the apparatus via the hot water sterilization water drain pipe 39.

  These hot water inlet valves 37-1, 37-2, 37-3, hot water outlet valves 38-1, 38-2, 38-3, 38-4, and a hot water sterilization water switching valve 44- described later. A plurality of hot water sterilization paths are formed by 1, 44-2, 44-3, and the like. In the example shown in FIG. 2, five types of routes (1) to (5) are shown as the hot water sterilization route. The selection of which hot water sterilization path to sterilize among the plurality of hot water sterilization paths is performed by the operation panel (not shown) of the rinser drainage recovery apparatus 20, and the hot water sterilization operation of each hot water sterilization path is automatically performed. It is preferable to operate. The method of selecting the hot water sterilization route is to measure the number of general bacteria in each hot water sterilization route and select the route in which the number of bacteria has increased close to the reference value (for example, the number of general bacteria is 100 or less). Conceivable. Moreover, the method of determining periodically the frequency of the hot water sterilization which does not exceed a reference value based on this measurement result, and performing regularly is also considered. In general, the frequency of hot water sterilization is preferably increased when sterilizing a portion having a large number of bacteria, and the frequency of hot water sterilization can be decreased when a portion having a small number of bacteria is sterilized.

Each hot water sterilization path of the water treatment unit 30 includes a hot water inlet valve and a hot water outlet valve, respectively, but hot water sterilization is not performed on the entire water flow path including the water treatment device of the water treatment unit 30. It arrange | positions so that a part may not arise and it becomes possible to perform hot water sterilization reliably with respect to the whole water flow path. For example, in the example shown in FIG. 2, as described above, the second hot water outlet valve 38-2 is provided upstream of the first hot water inlet valve 37-1 in the water flow path. The water sterilization route (1) and the hot water sterilization route (2) overlap in part of the water passage. Thereby, hot water sterilization can be performed on the entire water passage.
In addition, each water treatment device of the water treatment unit 30, piping of the water flow system, valves attached to the piping, instruments, and the like are used that have high heat resistance that can withstand high temperatures during hot water sterilization.

On the other hand, the hot water supply unit 40 constituting the rinser drainage recovery apparatus 20 shown in FIG. 2 is a water heating device 41 for heating the hot water sterilization water, and for supplying the hot water sterilization water to the water heating device 41. A hot water sterilization water supply pipe 42 and a hot water supply pipe 43 for supplying hot water from the water heating device 41 to each hot water sterilization path are included. In the hot water supply unit 40 shown in FIG. 2, the hot water sterilization of the water treatment equipment is performed by these configurations, and the contaminants detached from the water treatment equipment are not returned to these water treatment equipment. It is configured.
Moreover, the hot water sterilization water switching valves 44-1, 44-2, 44-3 for sterilizing with hot water of water quality suitable for each hot water sterilization path are connected to the hot water sterilization water supply piping of the hot water supply unit 40. 42 is attached. More specifically, a first hot water sterilization water switching valve 44-1 for supplying clean water, a second hot water sterilization water switching valve 44-2 for supplying cation tower treated water, and treated water. Is provided with a third hot water sterilization water switching valve 44-3. And these switching valves are switched and controlled according to the path | route which performs hot-water sterilization, and the hot-water sterilization water supplied can be selected. Accordingly, for example, it is not necessary to use the treated water for the hot water sterilization of all the hot water sterilization paths, so that the treated water can be saved.

The water heating device 41 included in the hot water supply unit 40 may be of any type as long as it can heat the hot water for sterilization to a predetermined temperature, but is compact if it is a heat exchanger that uses steam as a heat source. It is preferable in that it is easy to adjust the temperature and is economical. That is, as shown in FIG. 2, steam is supplied to the water heating device 41, and the hot water sterilization water supplied via the hot water sterilization water supply pipe 42 is heated by a heat exchanger using steam as a heat source. The condensed water is discharged out of the machine. Here, the water heating device 41 heats the supplied hot water sterilizing water to, for example, about 60 to 90 ° C. It is also effective to change the heating temperature for each hot water sterilization path.
Further, for example, a bubble separator (not shown) and a gas discharge valve (not shown) for separating and removing bubbles in the hot water from the hot water can be attached to the hot water sterilization water supply pipe 42. It is. By attaching these, bubbles can be prevented from staying in the hot water sterilization path, and hot water sterilization can be performed more effectively.
Furthermore, as the means for supplying high-temperature water, other equipment such as a warming regeneration facility for an anion exchange tower (a warming facility for a regenerant for silica desorption) can be used.

表１は、図２に示すリンサー排水回収装置２０の熱水殺菌の実施例を示している。表１に示す熱水殺菌経路(１)〜(５)は、図２に示す符号(１)〜(５)に対応している。
各熱水殺菌経路に共通する熱水殺菌条件としては、
・昇温速度 ０.５〜１０℃/ｍｉｎ
・殺菌 ６０〜９０℃で６０〜１０ｍｉｎ
・降温速度 ０.５〜１０℃/ｍｉｎ
である。 Next, the hot water sterilization path in the first embodiment shown in FIG. 2 will be described.

Table 1 shows an example of hot water sterilization of the rinser drainage recovery apparatus 20 shown in FIG. The hot water sterilization paths (1) to (5) shown in Table 1 correspond to the codes (1) to (5) shown in FIG.
As hot water sterilization conditions common to each hot water sterilization route,
・ Temperature increase rate 0.5-10 ° C / min
・ Sterilization 60 ~ 90min at 60 ~ 90 ° C
・ Cooling rate 0.5-10 ° C / min
It is.

  In the hot water sterilization path (1), clean water is supplied from the first hot water sterilization water switching valve 44-1 to the water heating device 41 via the hot water sterilization water supply pipe. And the hot water heated and produced | generated by this water heating apparatus 41 passes the hot water supply piping 43, and the peroxide decomposition tower 31 and the 1st hot water inlet valve 37-1 of the water treatment unit 30 are connected. Hot water is supplied to the water passage between the cation exchange tower 32. This hot water flows in the direction opposite to the flow of wastewater treatment (water flow), and sterilizes the peroxide decomposition tower 31 with hot water. Thereafter, the hot water subjected to the hot water sterilization is drained from the first hot water outlet valve 38-1 through the hot water sterilization water drain pipe 39. In this way, the hot water sterilization path (1) sterilizes the peroxide decomposition tower 31, the sterilization method is transient, and the hot water sterilization water is clean water. Moreover, the hot water flow direction is opposite to the water flow direction. As a result of investigations by the inventors, when compared with the number of general bacteria, what was 50 to 200 / ml before sterilization could be reduced to less than 1 / ml after sterilization.

  Next, in the hot water sterilization path (2), similarly, clean water is supplied from the first hot water sterilization water switching valve 44-1 to the water heating device 41 via the hot water sterilization water supply pipe 42, Hot water generated by being heated by the water heating device 41 is supplied to the water passage from the second hot water inlet valve 37-2 of the water treatment unit 30 via the hot water supply pipe 43. The This hot water flows in the opposite direction to the water flow and sterilizes the cation exchange tower 32 with hot water. Thereafter, the hot water subjected to the hot water sterilization is drained from the second hot water outlet valve 38-2 via the hot water sterilization water drain pipe 39. In this way, the hot water sterilization path (2) sterilizes the cation exchange tower 32, the sterilization method is transient, and the hot water sterilization water is clean water. Moreover, the hot water flow direction is opposite to the water flow direction. When compared with the number of general bacteria, what was 20 to 100 / ml before sterilization could be reduced to less than 1 / ml after sterilization.

  Similarly, in the hot water sterilization path (3), clean water is supplied from the first hot water sterilization water switching valve 44-1 to the water heating device 41 via the hot water sterilization water supply pipe 42, and this water heating Hot water generated by being heated by the device 41 is supplied from the second hot water inlet valve 37-2 of the water treatment unit 30 to the water passage through the hot water supply pipe 43. This hot water flows in the same direction as the water flow, and sterilizes the air stripping tower 33 with hot water. Thereafter, the hot water is drained from the third hot water outlet valve 38-3 via the hot water sterilization water drain pipe 39. As described above, the hot water sterilization path (3) sterilizes the air stripping tower 33, the sterilization method is transient, and the hot water sterilization water is clean water. Moreover, the hot water flow direction is the same as the water flow direction. When compared with the number of general bacteria, what was 20 to 100 / ml before sterilization could be reduced to less than 1 / ml after sterilization.

  In the hot water sterilization route (4), the cation tower treated water is supplied from the second hot water sterilization water switching valve 44-2 to the water heating device 41 via the hot water sterilization water supply pipe. This cation tower treated water is preferably treated water after being treated in the cation exchange tower 32 of the water treatment unit 30 and the oxygen gas being removed in the air stripping tower 33. And the hot water heated and produced | generated by the water heating apparatus 41 passes the hot water supply piping 43, and hot water is supplied to the water flow path from the 3rd hot water inlet valve 37-3 of the water treatment unit 30. Is done. This hot water flows in the opposite direction to the water flow and sterilizes the anion exchange tower 34 with hot water. Thereafter, the hot water is drained from the third hot water outlet valve 38-3 via the hot water sterilization water drain pipe 39. Thus, the hot water sterilization path (4) sterilizes the anion exchange tower 34, the sterilization system is transient, and the hot water sterilization water is cation tower treated water. Moreover, the hot water flow direction is opposite to the water flow direction. When compared with the number of general bacteria, what was less than 1 / ml to 50 / ml before sterilization could be reduced to less than 1 / ml after sterilization.

  In the hot water sterilization path (5), treated water is supplied from the third hot water sterilization water switching valve 44-3 to the water heating device 41 via the hot water sterilization water supply pipe. This treated water is water that is treated by the water treatment unit 30 and supplied from the treated water tank 13. Hot water heated by the water heating device 41 is supplied from the third hot water inlet valve 37-3 of the water treatment unit 30 to the water passage via the hot water supply pipe 43. This hot water flows in the same direction as the water flow, and sterilizes the cartridge filter 35 and the ultraviolet sterilizer 36 together with hot water. Thereafter, the hot water is drained from the fourth hot water outlet valve 38-4 via the hot water sterilization water drain pipe 39. In this way, the hot water sterilization path (5) sterilizes the cartridge filter 35 and the ultraviolet sterilizer 36, the sterilization method is transient, and the hot water sterilization water is treated water. Moreover, the hot water flow direction is the same as the water flow direction. When compared with the number of general bacteria, it was less than 1 / ml to 2 / ml before sterilization and less than 1 / ml after sterilization.

  Thus, according to the present embodiment, the water flow path is covered by the plurality of hot water sterilization paths, so there is no portion in the water flow path that is not hydrothermally sterilized and the entire water flow path is heated. Since each hot water sterilization path becomes shorter than the apparatus used as the sterilization path, the temperature rise / fall time during the hot water sterilization is shortened and the hot water sterilization time is shortened. As a result, the amount of heat energy and water required for hot water sterilization can be reduced. In addition, although there are a part in which the bacteria are relatively easy to propagate (for example, the peroxide decomposition tower 31) and a part that is relatively difficult to propagate (for example, the anion exchange tower 34) in the water flow path, Since the hot water sterilization can be performed individually by selecting the sterilization route, the hot water sterilization frequency of the hot water sterilization route in which bacteria are relatively easy to propagate can be increased. On the other hand, the hot water sterilization frequency of the hot water sterilization route in which bacteria are relatively difficult to propagate can be lowered, and efficient hot water sterilization is possible. Furthermore, for water treatment equipment where contaminants accumulated by hot water sterilization may be detached and mixed into hot water, this water treatment equipment and downstream water treatment equipment can be used as another hot water sterilization route. By separating, it is possible to prevent contamination of the downstream water treatment equipment.

-Second embodiment-
FIG. 3 is a configuration diagram detailing the second embodiment of the rinser drainage recovery apparatus 20. The second embodiment is greatly different from the first embodiment shown in FIG. 2 in that a circulation system is adopted as the sterilization method. As in the first embodiment shown in FIG. 2, the rinser wastewater recovery apparatus 20 shown in FIG. 3 includes a peroxide decomposition tower 31, a cation exchange tower 32, an air stripping tower 33, and an anion exchange tower 34 as water treatment devices. And a cartridge filter 35 and an ultraviolet sterilizer 36. Moreover, the point which these several water treatment apparatuses are connected through the water flow path is also the same. And the whole water flow path | route including the water treatment apparatus of the water treatment unit 30 is divided | segmented, and it has the several hot-water sterilization path | route for carrying out the hot water sterilization separately in a division | segmentation unit.
The same functions as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted here. Hereinafter, other embodiments are also the same.

Each of these hot water sterilization paths includes hot water inlet valves 51-1 to 51-5 and hot water outlet valves 52-1 to 52-5, respectively. In the second embodiment shown in FIG. 3, a first hot water inlet valve 51-1 is provided between the rinser drain pump 12 and the peroxide decomposition tower 31, and the peroxide decomposition tower 31 and the cation exchange tower 32 are provided. The 2nd hot water inlet valve 51-2 is provided between these. Further, a third hot water inlet valve 51-3 is provided between the cation exchange tower 32 and the air stripping tower 33, and a fourth hot water inlet valve 51- is provided between the air stripping tower 33 and the anion exchange tower 34. 4 is provided. Further, a fifth hot water inlet valve 51-5 is provided between the anion exchange tower 34 and the cartridge filter 35.
Moreover, in 2nd Embodiment shown in FIG. 3, it is between the peroxide decomposition | disassembly tower | column 31 and the cation exchange tower | column 32, and the downstream of the water flow path of waste_water | drain rather than the 2nd hot water inlet valve 51-2. In addition, a first hot water outlet valve 52-1 is provided. Further, a second hot water outlet valve 52-2 is provided between the cation exchange tower 32 and the air stripping tower 33 and downstream of the third hot water inlet valve 51-3 in the drainage water passage. Provided. Similarly, the third hot water outlet valve 52-3 is located between the air stripping tower 33 and the anion exchange tower 34 and downstream of the fourth hot water inlet valve 51-4 in the drainage water passage. Is provided. Further, a fourth hot water outlet valve 52-4 is provided between the anion exchange tower 34 and the cartridge filter 35 and downstream of the fifth hot water inlet valve 51-5 in the drainage water passage. ing. Furthermore, a fifth hot water outlet valve 52-5 is provided on the downstream side of the drainage water passage of the ultraviolet sterilizer 36 and on the front side of the treated water tank 13. Part of the hot water discharged from these hot water outlet valves 52-1 to 52-5 passes through the hot water sterilization water outlet pipe 53 and is circulated and used in the hot water supply unit 40 by the action of the switching valve. , A part is discharged to the outside.

  On the other hand, the hot water supply unit 40 of the second embodiment shown in FIG. 3 is branched from the hot water sterilization water outlet pipe 53 of the water treatment unit 30 in addition to the configuration shown in FIG. A circulation pipe 54 for circulating the produced hot water is provided. And the hot water tank 45 for performing circulation type hot water sterilization using the water from this circulation pipe 54, and the hot water pump 46 which supplies the hot water sterilization water from the hot water tank 45 toward the water heating device 41 I have.

表２は、図３に示すリンサー排水回収装置２０の熱水殺菌の実施例を示している。表２に示す熱水殺菌経路(１)〜(５)は、図３に示す符号(１)〜(５)に対応している。
昇温速度、殺菌、降温速度などの熱水殺菌条件は、第１の実施形態と同様であり、各熱水殺菌経路に共通している。 Next, the hot water sterilization path in the second embodiment shown in FIG. 3 will be described.

Table 2 shows an example of hot water sterilization of the rinser drainage recovery apparatus 20 shown in FIG. The hot water sterilization paths (1) to (5) shown in Table 2 correspond to the codes (1) to (5) shown in FIG.
The hot water sterilization conditions such as the temperature rising rate, sterilization, and temperature falling rate are the same as those in the first embodiment, and are common to each hot water sterilization path.

  First, in the hot water sterilization route (1), the hot water sterilization water switching valve 44-1 passes through the hot water sterilization water supply pipe 42 and the hot water tank 45, and is then connected to the water heating device 41 by the hot water pump 46. Water is supplied. Then, the hot water heated and generated by the water heating device 41 passes through the hot water supply pipe 43 and passes through the peroxide decomposition tower 31 from the first hot water inlet valve 51-1 of the water treatment unit 30. Hot water is supplied upstream of the water path. This hot water flows in the same direction as the flow of wastewater treatment (water flow), and sterilizes the peroxide decomposition tower 31 with hot water. Thereafter, the hot water subjected to the hot water sterilization is drained from the first hot water outlet valve 52-1 via the hot water sterilization water outlet pipe 53. The waste water used for sterilization is supplied to the hot water tank 45 via the circulation pipe 54 by switching by a valve, and can be recycled. Thus, the hot water sterilization path (1) sterilizes the peroxide decomposition tower 31, the sterilization method is circulation, and the hot water sterilization water is clean water. Moreover, the hot water flow direction is the same as the water flow direction. Here, as a result of investigations by the inventors, when compared with the number of general bacteria, what was 50 to 200 / ml before sterilization could be reduced to less than 1 / ml after sterilization.

  Next, in the hot water sterilization path (2), similarly, water is heated by the hot water pump 46 from the first hot water sterilization water switching valve 44-1 through the hot water sterilization water supply pipe 42 and the hot water tank 45. Clean water is supplied to the device 41. Hot water generated by being heated by the water heating device 41 is supplied to the water passage from the second hot water inlet valve 51-2 of the water treatment unit 30 via the hot water supply pipe 43. The This hot water flows in the same direction as the water flow, and sterilizes the cation exchange tower 32 with hot water. Thereafter, the hot water subjected to the hot water sterilization is drained from the second hot water outlet valve 52-2 via the hot water sterilization water outlet pipe 53. The waste water used for sterilization is supplied to the hot water tank 45 via the circulation pipe 54 by switching by a valve, and can be recycled. Thus, the hot water sterilization path (2) sterilizes the cation exchange tower 32, the sterilization method is circulation, and the hot water sterilization water is clean water. Moreover, the hot water flow direction is the same as the water flow direction. Here, in the hot water sterilization route (2), when compared with the number of general bacteria, what was 20 to 100 / ml before sterilization could be reduced to less than 1 / ml after sterilization.

  Next, in the hot water sterilization path (3), similarly, water is heated by the hot water pump 46 from the first hot water sterilization water switching valve 44-1 through the hot water sterilization water supply pipe 42 and the hot water tank 45. Clean water is supplied to the device 41. Hot water generated by heating with this water heating device 41 is supplied to the water passage from the third hot water inlet valve 51-3 of the water treatment unit 30 via the hot water supply pipe 43. The This hot water flows in the same direction as the water flow, and sterilizes the air stripping tower 33 with hot water. Thereafter, the hot water subjected to the hot water sterilization is drained from the third hot water outlet valve 52-3 via the hot water sterilization water outlet pipe 53. The waste water used for sterilization is supplied to the hot water tank 45 via the circulation pipe 54 by switching by a valve, and can be recycled. Thus, the hot water sterilization path (3) sterilizes the air stripping tower 33, the sterilization method is circulation, and the hot water sterilization water is clean water. Moreover, the hot water flow direction is the same as the water flow direction. Here, in the hot water sterilization route (3), when compared with the number of general bacteria, what was 20 to 100 / ml before sterilization could be reduced to less than 1 / ml after sterilization.

  In the hot water sterilization route (4), the second hot water sterilization water switching valve 44-2 passes through the hot water sterilization water supply pipe 42 and the hot water tank 45, and the hot water pump 46 performs cation tower treatment on the water heating device 41. Water is supplied. Hot water generated by being heated by the water heating device 41 is supplied to the water passage from the fourth hot water inlet valve 51-4 of the water treatment unit 30 via the hot water supply pipe 43. The This hot water flows in the same direction as the water flow, and sterilizes the anion exchange tower 34 with hot water. Thereafter, the hot water subjected to the hot water sterilization is drained from the fourth hot water outlet valve 52-4 via the hot water sterilization water outlet pipe 53. The waste water used for sterilization is supplied to the hot water tank 45 via the circulation pipe 54 by switching by a valve, and can be recycled. Thus, the hot water sterilization route (4) sterilizes the anion exchange tower 34, the sterilization method is circulation, and the hot water sterilization water is cation tower treated water. Moreover, the hot water flow direction is the same as the water flow direction. Moreover, when compared with the number of general bacteria, what was less than 1 / ml to 50 / ml before sterilization could be reduced to less than 1 / ml after sterilization.

  In the hot water sterilization route (5), the treated water is supplied from the third hot water sterilization water switching valve 44-3 through the hot water sterilization water supply pipe 42 and the hot water tank 45 to the water heating device 41 by the hot water pump 46. Supplied. Hot water generated by heating by the water heating device 41 is supplied to the water passage from the fifth hot water inlet valve 51-5 of the water treatment unit 30 via the hot water supply pipe 43. The This hot water flows in the same direction as the water flow, and sterilizes the cartridge filter 35 and the ultraviolet sterilizer 36 together with hot water. Thereafter, the hot water subjected to the hot water sterilization is drained from the fifth hot water outlet valve 52-5 via the hot water sterilization water outlet pipe 53. The waste water used for sterilization is supplied to the hot water tank 45 via the circulation pipe 54 by switching by a valve, and can be recycled. Thus, the hot water sterilization path (5) sterilizes the cartridge filter 35 and the ultraviolet sterilizer 36, the sterilization method is circulation type, and the hot water sterilization water is treated water. Moreover, the hot water flow direction is the same as the water flow direction. Furthermore, when compared with the number of general bacteria, it was less than 1 / ml to 2 / ml before sterilization and less than 1 / ml after sterilization.

  The second embodiment configured as described above can save heat energy and water by adopting circulating hot water sterilization in addition to the same effects as the first embodiment.

− Third Embodiment −
FIG. 4 is a configuration diagram detailing the third embodiment of the rinser drainage recovery apparatus 20. The third embodiment is characterized in that a circulating hot water sterilization path (hot water sterilization path (6)) is added to the first embodiment shown in FIG. As in the first embodiment shown in FIG. 2, the rinser wastewater recovery apparatus 20 shown in FIG. 4 includes a peroxide decomposition tower 31, a cation exchange tower 32, an air stripping tower 33, and an anion exchange tower 34 as water treatment devices. And a cartridge filter 35 and an ultraviolet sterilizer 36. Moreover, the point which these several water treatment apparatuses are connected through the water flow path is also the same. And the whole water flow path | route including the water treatment apparatus of the water treatment unit 30 is divided | segmented, and it has the several hot-water sterilization path | route for carrying out the hot water sterilization separately in a division | segmentation unit.

In the third embodiment shown in FIG. 4, in addition to the hot water inlet valves 37-1 to 37-3 in the first embodiment, a fourth heat is provided between the rinser drain pump 12 and the peroxide decomposition tower 31. A water inlet valve 37-4 is provided. In addition to the hot water outlet valves 38-1 to 38-4 in the first embodiment, the second hot water outlet valve 38-2 is between the peroxide decomposition tower 31 and the cation exchange tower 32. A fifth hot water outlet valve 38-5 is provided in the water passage between the first hot water inlet valve 37-1 and the first hot water inlet valve 37-1. Furthermore, it has a hot water sterilization water drain pipe 61 for circulating hot water via the fifth hot water outlet valve 38-5.
On the other hand, in addition to the first embodiment shown in FIG. 2, the hot water supply unit 40 has a function corresponding to the circulating hot water sterilization path by the hot water sterilization path (6). That is, a circulation pipe 62 branched from the water drain pipe 61 for hot water sterilization by a valve, a hot water tank 45 for performing circulation type hot water sterilization using water circulated through the circulation pipe 62, A hot water pump 46 for supplying water from the water tank 45, a water heating device 41-2 for heating the water supplied from the hot water pump 46, and water treatment of the hot water heated by the water heating device 41-2 A hot water supply pipe 43-2 for supplying the unit is provided. Further, a fourth hot water sterilization water switching valve 44-4 for supplying clean water to the hot water tank 45 and a hot water sterilization water supply pipe 42-2 are provided.

表３は、図４に示すリンサー排水回収装置２０の熱水殺菌の実施例を示している。表３に示す熱水殺菌経路(１)〜(６)は、図４に示す符号(１)〜(６)に対応している。
昇温速度、殺菌、降温速度などの熱水殺菌条件は、第１の実施形態および第２の実施形態と同様であり、各熱水殺菌経路に共通している。 Next, a hot water sterilization path in the third embodiment shown in FIG. 4 will be described.

Table 3 shows an example of hot water sterilization of the rinser drainage recovery apparatus 20 shown in FIG. The hot water sterilization paths (1) to (6) shown in Table 3 correspond to the codes (1) to (6) shown in FIG.
The hot water sterilization conditions such as the temperature rising rate, sterilization, and temperature falling rate are the same as those in the first embodiment and the second embodiment, and are common to each hot water sterilization path.

First, the hot water sterilization paths (1) to (5) are the hot water sterilization paths (in the first embodiment shown in FIG.
It is the same as 1) to (5), and detailed description is omitted here.
In the hot water sterilization route (6), first, the water heating device 41 is supplied by the hot water pump 46 from the fourth hot water sterilization water switching valve 44-4 via the hot water sterilization water supply pipe 42-2 and the hot water tank 45. -Water is supplied to -2. The hot water heated and generated by the water heating device 41-2 passes from the fourth hot water inlet valve 37-4 of the water treatment unit 30 to the water passage through the hot water supply pipe 43-2. Supplied. This hot water flows in the same direction as the water flow and sterilizes the peroxide decomposition tower 31 with hot water. Thereafter, the hot water subjected to the hot water sterilization is drained from the fifth hot water outlet valve 38-5 via the hot water sterilization water drain pipe 61. The waste water used for sterilization is supplied to the hot water tank 45 via the circulation pipe 62 by switching by a valve, and is recycled. Thus, the hot water sterilization path (6) sterilizes the peroxide decomposition tower 31, the sterilization method is circulation, and the hot water sterilization water is clean water. Moreover, the hot water flow direction is the same as the water flow direction. Furthermore, when compared with the number of general bacteria, what was 50 to 200 / ml before sterilization could be reduced to less than 1 / ml after sterilization.
The hot water sterilization path (6) is selectively used as the hot water sterilization path (1), and the hot water sterilization is performed.

  In addition to the same effects as in the first embodiment, the third embodiment configured as described above can save thermal energy and water by partially adopting circulating hot water sterilization. Although only the hydrothermal sterilization of the peroxide decomposition tower 31 is made a circulation type by the hot water sterilization path (6), the capacity of the peroxide decomposition tower 31 is large and a large amount of hot water is used. I pay attention to it. In other words, by adopting a circulation system for a portion that uses a large amount of hot water, it is possible to reduce the cost of equipment and efficiently save thermal energy and water.

− Fourth Embodiment −
FIG. 5 is a configuration diagram detailing the fourth embodiment of the rinser drainage recovery apparatus 20. In this 4th Embodiment, the content of the water treatment apparatus arrange | positioned in the water treatment unit 30 differs from the 1st-3rd embodiment shown in FIGS. The water treatment unit 30 of the rinser wastewater recovery apparatus 20 shown in FIG. 5 includes a peroxide decomposition tower 31, an air stripping tower 33, an anion exchange tower 34, and a cartridge filter 35, and replaces the cation exchange tower 32 and the ultraviolet sterilizer 36. The reverse osmosis membrane module unit 70 is provided. The reverse osmosis membrane module filled in the reverse osmosis membrane module unit 70 is not particularly limited in material and shape as long as it can remove ionic substances such as acetate ions and coexisting cations contained in the treated water of the activated carbon tower. For example, a polyamide-based spiral composite membrane reverse osmosis membrane module is used. In the reverse osmosis membrane module unit 70, depending on the quality of the water supplied to the reverse osmosis membrane device, about 70 to 90% of the normal supply water is taken out from the reverse osmosis membrane device treated water piping as permeated water (treated water), and the rest 10 to 30% of the concentrated water (reverse osmosis membrane module unit concentrated water) is discharged out of the apparatus.

  In the fourth embodiment shown in FIG. 5, the water treatment unit 30 includes hot water inlet valves 71-1 and 71-2 and hot water outlet valves 72-1 to 72-4 that form the hot water sterilization paths. And. Here, a first hot water inlet valve 71-1 is provided between the peroxide decomposition tower 31 and the air stripping tower 33, and a second hot water inlet valve is provided between the anion exchange tower 34 and the cartridge filter 35. 71-2 is provided. Further, a first hot water outlet valve 72-1 is provided between the rinser drain pump 12 and the peroxide decomposition tower 31, and a second hot water outlet valve is provided between the air stripping tower 33 and the anion exchange tower 34. 72-2 is provided. Furthermore, from the 3rd hot water outlet valve 72-3 provided by branching from the water flow path for taking out the treated water of the reverse osmosis membrane module unit 70, and from the water flow path for discharging concentrated water out of the apparatus A fourth hot water outlet valve 72-4 provided in a branched manner is provided. The hot water sterilization waste water from each hot water outlet valve 72-1 to 72-4 is discharged out of the recovery device via the hot water sterilization water drain pipe 73.

表４は、図５に示すリンサー排水回収装置２０の熱水殺菌の実施例を示している。表４に示す熱水殺菌経路(１)〜(４)は、図５に示す符号(１)〜(４)に対応している。
昇温速度、殺菌、降温速度などの熱水殺菌条件は、第１〜第３の実施形態と同様であり、各熱水殺菌経路に共通している。 Next, a hot water sterilization path in the fourth embodiment shown in FIG. 5 will be described.

Table 4 shows an example of hot water sterilization of the rinser drainage recovery apparatus 20 shown in FIG. The hot water sterilization paths (1) to (4) shown in Table 4 correspond to the codes (1) to (4) shown in FIG.
The hot water sterilization conditions such as the temperature rise rate, sterilization, and temperature drop rate are the same as those in the first to third embodiments, and are common to the respective hot water sterilization paths.

  First, in the hot water sterilization path (1), clean water is supplied from the first hot water sterilization water switching valve 44-1 to the water heating device 41 via the hot water sterilization water supply pipe. Then, the hot water generated by being heated by the water heating device 41 passes through the hot water supply pipe 43 and passes through the peroxide decomposition tower 31 from the first hot water inlet valve 71-1 of the water treatment unit 30. Hot water is supplied to the downstream side of the water path. This hot water flows in the direction opposite to the flow of wastewater treatment (water flow), and sterilizes the peroxide decomposition tower 31 with hot water. Thereafter, the hot water subjected to the hot water sterilization is drained out of the apparatus from the first hot water outlet valve 72-1 via the hot water sterilization water drain pipe 73. In this way, the hot water sterilization path (1) sterilizes the peroxide decomposition tower 31, the sterilization method is transient, and the hot water sterilization water is clean water. Moreover, the hot water flow direction is opposite to the water flow direction. When compared with the number of general bacteria, it was 50 to 200 / ml before sterilization and less than 1 / ml after sterilization.

  Next, in the hot water sterilization path (2), similarly, clean water is supplied from the first hot water sterilization water switching valve 44-1 to the water heating device 41 via the hot water sterilization water supply pipe. The The hot water heated and generated by the water heating device 41 passes through the hot water supply pipe 43, and passes through the peroxide decomposition tower 31 from the first hot water inlet valve 71-1 of the water treatment unit 30. Hot water is supplied downstream of the path. This hot water flows in the same direction as the water flow, and sterilizes the air stripping tower 33 with hot water. Thereafter, the hot water subjected to the hot water sterilization is drained from the second hot water outlet valve 72-2 via the hot water sterilization water drain pipe 73. As described above, the hot water sterilization path (2) sterilizes the air stripping tower 33, the sterilization method is transient, and the hot water sterilization water is clean water. Moreover, the hot water flow direction is the same as the water flow direction. Here, in the hot water sterilization route (2), compared with the number of general bacteria, it was 20 to 100 / ml before sterilization and less than 1 / ml after sterilization.

In the hot water sterilization path (3), treated water is supplied from the third hot water sterilization water switching valve 44-3 to the water heating device 41 via the hot water sterilization water supply pipe. The hot water heated and generated by the water heating device 41 is supplied to the water passage from the second hot water inlet valve 71-2 of the water treatment unit 30 via the hot water supply pipe 43. This hot water flows in the opposite direction to the water flow and sterilizes the anion exchange tower 34 with hot water. Thereafter, the hot water subjected to the hot water sterilization is drained from the second hot water outlet valve 72-2 via the hot water sterilization water drain pipe 73. Thus, the hot water sterilization path (3) sterilizes the anion exchange tower 34, the sterilization method is transient, and the hot water sterilization water is treated water. Moreover, the hot water flow direction is opposite to the water flow direction. Here, in the hot water sterilization route (3), when compared with the number of general bacteria, what was less than 1 / ml to 50 / ml before sterilization may be less than 1 / ml after sterilization. did it.

In the hot water sterilization path (4), treated water is supplied from the third hot water sterilization water switching valve 44-3 to the water heating device 41 via the hot water sterilization water supply pipe. The hot water heated and generated by the water heating device 41 is supplied to the water passage from the second hot water inlet valve 71-2 of the water treatment unit 30 via the hot water supply pipe 43. This hot water flows in the same direction as the water flow, and sterilizes the cartridge filter 35 and the reverse osmosis membrane module unit 70 with hot water. At this time, the third hot water outlet valve 72-3 and / or the fourth hot water outlet valve 72-4 are opened, and the hot water used for sterilization is discharged to the hot water sterilization water drain pipe 73. . And it is discharged out of the machine as hot water sterilization waste water. Thus, the hot water sterilization path (4) sterilizes the cartridge filter 35 and the reverse osmosis membrane module unit 70 with hot water, the sterilization method is transient, and the hot water sterilization water is treated water. Moreover, the hot water flow direction is the same as the water flow direction. Moreover, the number of general bacteria was less than 1 / ml to 2 / ml before sterilization and less than 1 / ml after sterilization.
Thus, according to the fourth embodiment, efficient hot water sterilization can be performed on the water treatment unit 30 including the reverse osmosis membrane module unit 70, and bacterial growth can be effectively suppressed. .

  As described above in detail, according to the present embodiment (the first embodiment and the fourth embodiment), hot water sterilization can be performed more efficiently than the conventional apparatus, and stable operation can be achieved. It is possible to provide the rinser drainage recovery apparatus 20 for an aseptic filling facility capable of performing the above.

  The present invention can be applied to, for example, a wastewater recovery apparatus that contains peroxide, such as an aseptic filling facility that recovers and reuses rinser wastewater, or a wastewater recovery system that includes a wastewater recovery apparatus.

DESCRIPTION OF SYMBOLS 1 ... Lincer drainage collection system, 10 ... Aseptic filling equipment rinser, 11 ... Lincer drainage tank, 12 ... Lincer drainage pump, 13 ... Treated water tank, 14 ... Treated water pump, 15 ... Relay tank, 16 ... Raw water pump, 17 ... Aseptic Water production device, 20 ... Rinser drainage recovery device, 30 ... Water treatment unit, 40 ... Hot water supply unit

Claims (16)

A rinser wastewater treatment apparatus containing a peroxide,
A water treatment unit and a hot water supply unit;
The water treatment unit comprises, as water treatment equipment, a peroxide decomposition tower filled with a peroxide decomposition catalyst for decomposing peroxide contained in the rinser waste water, and treated water from the peroxide decomposition tower. Hydrothermal sterilization by dividing a water passage including at least one of an ion exchange tower, a reverse osmosis membrane module unit, and a nanofiltration membrane module unit for removing impurities contained in the water treatment unit and a water treatment device of the water treatment unit A plurality of hot water sterilization pathways to
The hot water supply unit includes a water heating device for heating hot water sterilization water, a hot water sterilization water supply pipe for supplying hot water sterilization water to the water heating device, and a plurality of the water heating devices from the water heating device. processing apparatus rinser wastewater; and a hot water supply pipe for supplying hot water to the hot water sterilization path. 2. The rinser wastewater treatment apparatus according to claim 1, wherein the hot water sterilization path of the water treatment unit includes a hot water inlet valve and a hot water outlet valve. The hot water supply unit includes a water heating device for performing a one-time hot water sterilization of the water treatment device, and a hot water sterilization water supply pipe for supplying hot water sterilization water to the water heating device. The rinser wastewater treatment apparatus according to claim 1, characterized in that: The hot water supply unit includes a hot water tank, a hot water pump, a water heating device, and a hot water sterilization water supply pipe for supplying hot water sterilization water to the hot water tank. The rinser waste water treatment apparatus according to claim 1, further comprising: The said hot water supply unit was equipped with the bubble separator and gas discharge valve for removing the bubble in hot water from hot water in the said hot water supply piping, The processing of the rinser waste_water | drain of Claim 1 characterized by the above-mentioned. apparatus. The water treatment unit includes, as a water treatment device, a deaeration unit for removing gas contained in the treated water of the peroxide decomposition tower, an ultraviolet sterilizer for sterilizing bacteria in water, and an ion exchange tower. The treatment apparatus of the rinser waste_water | drain of Claim 1 containing at least any one of the cartridge filter for removing the trace amount suspended substance contained in treated water. The processing apparatus of the rinser waste_water | drain of Claim 1 which further contains the operation panel for selecting the path | route which performs hot-water sterilization from these several hot-water sterilization paths. A rinser wastewater treatment device,
A plurality of water treatment devices that treat the rinser wastewater and are connected to each other via a water passage;
A rinser wastewater treatment apparatus comprising: a hot water sterilization path for dividing into one or a plurality of water treatment equipment constituting the plurality of water treatment equipment and sterilizing with hot water. 9. The apparatus for treating rinser wastewater according to claim 8, wherein the hot water sterilization path sterilizes the water flow path associated with the unit together with the unit of the one or more water treatment devices to be divided. . 9. The rinser wastewater treatment apparatus according to claim 8, wherein hot water sterilization is performed at a different frequency for each unit. 9. The rinser wastewater treatment apparatus according to claim 8, wherein hot water sterilization is performed using hot water having different water quality for each unit. A rinser wastewater treatment apparatus containing a peroxide,
A water treatment unit including a plurality of water treatment devices and a hot water supply unit;
The water treatment unit includes an activated carbon tower that decomposes the peroxide by bringing the rinser wastewater into contact with activated carbon, and hydrothermal sterilization by dividing into one or a plurality of water treatment equipment units, and the activated carbon tower is hydrothermally sterilized. And a hot water sterilization path
The hot water supply unit supplies the hot water to the hot water sterilization path, and the rinser wastewater treatment apparatus. The hot water sterilization path includes a transient hot water sterilization path and a circulating hot water sterilization path,
13. The rinser wastewater treatment apparatus according to claim 12, wherein the hot water supply unit selects either the transient hot water sterilization path or the circulating hot water sterilization path to perform hot water sterilization. . A sterilization method for a rinser wastewater treatment apparatus comprising a plurality of water treatment devices for treating rinser wastewater containing a peroxide,
Determining a unit for performing hot water sterilization for performing hot water sterilization by dividing the unit into one or more water treatment devices constituting the plurality of water treatment devices; and
A method of sterilizing a rinser wastewater treatment apparatus, comprising the step of performing hydrothermal sterilization with different water quality and / or different frequency for each of the determined units. The rinser wastewater treatment according to claim 14 , wherein the step of performing the hot water sterilization is performed by a transient hot water sterilization in which hot water is not reused or a circulating hot water sterilization in which hot water is reused. Device sterilization method. 15. The rinser wastewater treatment apparatus according to claim 14, wherein the hot water sterilization step selects the same direction or reverse direction as the water flow of the rinser wastewater treatment for each unit and distributes the hot water. Sterilization method.

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