WO2005075361A1 - 殺菌水製造装置の混合手段 - Google Patents
殺菌水製造装置の混合手段 Download PDFInfo
- Publication number
- WO2005075361A1 WO2005075361A1 PCT/JP2004/015792 JP2004015792W WO2005075361A1 WO 2005075361 A1 WO2005075361 A1 WO 2005075361A1 JP 2004015792 W JP2004015792 W JP 2004015792W WO 2005075361 A1 WO2005075361 A1 WO 2005075361A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mixer
- pipe
- acid
- water
- raw water
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
- C02F1/766—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens by means of halogens other than chlorine or of halogenated compounds containing halogen other than chlorine
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
Definitions
- the present invention relates to a mixing means of a sterilizing water producing apparatus for sterilizing bacteria contained in water such as tap water and well water.
- FIG. 2 shows a mixer that does not generate chlorine gas.
- the mixer (mixing means) 60 has a cubic housing 62, and a raw water passage 64, a first branch passage 66 communicating with the raw water passage 64, and a raw water passage 64 inside the housing 62. Connecting second branch passage 68, first branch passage 66 and second branch passage 68 And a merging passage 70 where the two merge.
- the raw water passage 64 is connected to a raw water introduction passage 72 for introducing raw water into it, and the first branch passage 66 is connected to a sodium hypochlorite introduction passage 74 for introducing sodium hypochlorite.
- the second branch passage 68 is connected to an acid introduction passage 76 for introducing an acid such as hydrochloric acid or acetic acid.
- the junction passage 70 is for discharging the sterilized water generated by the mixer 60 from the mixer 60.
- the sterile water discharge passages 7 and 8 are connected.
- a mixer 80 is provided at a position downstream of the communication position with the sodium hypochlorite introduction passage 74 in the first branch passage 66 (a position opposite to the raw water passage 64).
- the mixer 82 is provided at a position downstream of the communication position with the acid introduction passage 76 (the position opposite to the raw water passage 64), and a position upstream of the communication passage with the sterilization water discharge passage 78 at the junction passage 70 (
- a mixer 84 is provided at a position close to the raw water passage 64).
- the mixers 80, 82, and 84 have the shapes shown in FIG. 3, but the shapes of the mixers 80, 82, and 84 are not limited to those shown in FIG.
- the mixers 80, 82, and 84 are made of a material that is not corroded by acid.
- the first branch passage 66 Half of the amount of raw water introduced from the raw water introduction passage 72 to the raw water passage 64 is introduced into the first branch passage 66, and the other half is introduced into the second branch passage 68.
- the sodium hypochlorite introduced from the sodium hypochlorite introduction passage 74 is added to the raw water introduced from the raw water passage 64, and the sodium hypochlorite added with the raw water is added.
- the mixer 80 In the second branch passage 68, the acid introduced from the acid introduction passage 74 is added to the raw water introduced from the raw water passage 64, and the raw water and the added acid are mixed by the mixer 82.
- the mixed water of the raw water and sodium hypochlorite mixed in the mixer 80 and the mixed water of the raw water and the acid mixed in the mixer 82 enter the merge passage 70, and the mixer 84 in the merge passage 70 is mixed. And finally sterilized water obtained by sterilizing various bacteria obtained by mixing raw water, sodium hypochlorite, and acid. The sterilized water is then discharged to the outside of the mixer 60 via the sterilized water discharge passage 78.
- sodium hypochlorite does not come into direct contact with an acid such as chlorine or acetic acid. That is, sodium hypochlorite is diluted with raw water, and acid is also diluted with raw water, and the diluted sodium hypochlorite and the diluted acid are combined. Mix at road 70. Both sodium hypochlorite and acid are diluted, and chlorine gas is not generated in principle by mixing dilution water. However, the diluted sodium hypochlorite is alkaline and the diluted acid is acidic, and by mixing them at the same time, chlorine gas is generated in some mixing areas. There is a possibility that there will be an area.
- the housing 62 has a cubic shape as shown in FIG. 2 in order to form one passage (merging passage 70). Since the cubic housing 62 has a large volume, there are disadvantages when the volume of the entire apparatus is increased and when the cost is increased due to the large volume. Furthermore, since the mixer 60 having a large volume is built in, there is a possibility that the layout freedom of each component in the sterilizing water producing apparatus may be limited.
- the present invention has been made in view of the above points, and it is possible to reliably prevent generation of chlorine gas, reduce the volume of the entire apparatus, and obtain a degree of freedom in layout of components of the apparatus. It is an object of the present invention to provide a mixing means for a sterilizing water producing apparatus.
- the present invention provides a mixing means used in a sterilizing water producing apparatus for generating sterilizing water by mixing raw water, sodium hypochlorite, and an acid.
- a pipe for allowing water to pass therethrough, a first supply port provided in the pipe, and for introducing the sodium hypochlorite into the interior of the noive,
- a second supply port provided downstream of the first supply port for introducing the acid into the inside of the pipe, a communication position between the first supply port inside the pipe, and
- a first mixer provided between a communication position with a second supply port, A second mixer provided downstream of the communication position with the second supply port inside the nove.
- the present invention includes a third mixer provided inside the pipe at a downstream side of the second mixer.
- the mixing means of the present invention since the pipe is compared with the housing of the conventional mixer, the volume can be significantly reduced as compared with the conventional cubic mixer, and Accordingly, the volume of the entire sterilizing water producing apparatus can be reduced. Further, in the present invention, by using the existing pipe, the cost can be reduced as compared with the conventional cubic mixer. Further, since the neuve can be arranged at an arbitrary position of the sterilizing water producing apparatus, the degree of freedom of the layout of the components of the apparatus can be obtained as compared with the conventional mixer. In the present invention, furthermore, alkaline sodium hypochlorite is added first to raw water in the pipe, and then acid is added to adjust the pH so that the alkaline power is also acidic. It does not fall below the pH value at which water is generated. Therefore, generation of chlorine gas can be reliably prevented.
- FIG. 1 is a cross-sectional view of an apparatus for producing sterilized water according to the present invention.
- FIG. 2 is a cross-sectional perspective view of a conventional mixer used for a sterilizing water production device.
- FIG. 3 is a perspective view of a mixer used in FIGS. 1 and 2.
- FIG. 1 is a cross-sectional view of the mixing means of the apparatus for producing sterilized water according to the present invention.
- the mixing means of the apparatus for producing sterilized water according to the present invention is for mixing raw water, sodium hypochlorite, and an acid such as hydrochloric acid or acetic acid, and has the same function as a conventional mixer.
- the mixing means of the present invention includes a pipe 10 through which raw water passes, a first supply port 12 provided in the pipe 10 for supplying sodium hypochlorite into the pipe 10, and a pipe And a second supply port (14) for supplying acid into the pipe (10).
- the mixing means further includes a first mixer 16 for mixing the liquid at a position in the neuve 10 downstream of the first supply port 12 and upstream of the second supply port 14, and downstream of the second supply port 14.
- a second mixer 18 is provided for mixing the liquid at a position in the side pipe 10.
- a third mixer 20 for mixing a liquid is provided at a position downstream of the second mixer 18 in the neutral 10.
- the third mixer 20 need not always be provided, but is preferably provided.
- the first mixer 16, the second mixer 18, and the third mixer 20 for example, those having the shapes shown in FIG. 3 are used, but the shapes are not limited to those shown in FIG.
- the mixers 16, 18, and 20 are made of a material that is not corroded by acid.
- the pipe 10 shown in Fig. 1 includes three straight pipes 22, two vent pipes 24, a pipe 26 having the first supply port 12, and a pipe having the second supply port 14. 28 and six connecting pipes 30 connecting them, but the type and number are not limited to these.
- the pipe 10 shown in FIG. 1 has two vent pipes 24 on the way, and the direction of inflow of raw water into the inlet of the pipe 10 and the direction of outflow of sterilizing water at the outlet of the pipe 10 are in a bias direction parallel to each other.
- various pipes such as the force vent pipe 24, the shape of the nove 10 can be set to any shape, and the direction of introduction of raw water into the pipe 10 and the direction of discharge of sterilized water from the pipe 10 can be changed in any direction. Can be set.
- Raw water such as tap water or well water is introduced into the pipe 10 via a raw water introduction passage 32.
- a valve 34, a flow meter 36, a pH meter 38, and an oxidizing reduction potentiometer 40 are provided in the middle of the raw water introduction passage 32 in order from the upstream side to the downstream side.
- the raw water flow rate, pH and redox potential are measured.
- Sodium hypochlorite is introduced from the first supply port 12 into the pipe 10 from the sodium hypochlorite tank 42 via the introduction passage 44.
- a flow meter 46 and a valve 48 are provided in the introduction passage 44. The flow rate of sodium hypochlorite introduced into the pipe 10 is measured.
- An acid such as hydrochloric acid or acetic acid is introduced from the second supply port 14 into the pipe 10 via the introduction passage 52 from the acid tank 50.
- a flow meter 54 and a valve 56 are provided in the middle of the introduction passage 52, and the flow rate of the acid introduced into the pipe 10 is measured.
- sodium hypochlorite is added to the raw water flowing through the pipe 10 from the first supply port 12 and is located downstream of the addition position.
- Raw water and sodium hypochlorite are mixed by the first mixer 16.
- Sodium hypochlorite is alkaline, and the first mixer 16 makes a dilute solution of sodium hypochlorite.
- an acid is introduced into the diluted solution of sodium hypochlorite at the position of the second supply port 14 in the pipe 10.
- the second mixer 18 mixes the diluted solution of sodium hypochlorite and the acid.
- the mixed water mixed by the second mixer 18 is further mixed by the third mixer 20 downstream of the second mixer 18 to generate sterilized water.
- the raw water, sodium hypochlorite and acid are sufficiently mixed by the second mixer 18, but the raw water, sodium hypochlorite and acid are mixed more reliably by the third mixer 20.
- sodium hypochlorite is first added to raw water to prepare an alkaline sodium hypochlorite diluent, and an acid is added to the sodium hypochlorite diluent.
- an acid is added to the sodium hypochlorite diluent.
- the mixed water of the raw water and the additives becomes alkaline at first, and then the pH is changed by the addition of an acid so that the alkalinity becomes acidic.
- the pH value of the mixed water is reduced by adding an acid, the proportion of the effective free chlorine (HOC1, OC ⁇ ) concentration that exerts a bactericidal effect can be increased, and the desired existing free chlorine concentration can be increased. It is possible to obtain sterilized water.
- the present invention first make a dilute solution of alkaline sodium hypochlorite, so as to adjust the pH value by adding an acid to the diluted solution, Runode, the desired sterilizing water P H If the value is, for example, 6-7.5, the sterilized water produced by mixing sodium hypochlorite and acid in the raw water will not have a pH below 4.5. Therefore, even if raw water, sodium hypochlorite and acid are mixed in the pipe 10 according to the present invention, generation of chlorine gas can be reliably prevented.
- the pipe 10 through which raw water passes corresponds to a housing of a conventional mixer.
- the pipe 10 since the pipe 10 is used in the present invention in contrast to the cubic housing having a large volume in the conventional mixer, the pipe 10 can have a smaller volume than the conventional cubic housing. Thus, the volume of the entire sterilizing water producing apparatus can be reduced. Further, in place of the conventional cubic housing having a large volume, in the present invention, the cost can be reduced by using an existing pipe. Further, according to the present invention, since the pipe can be arranged at an arbitrary position of the sterilizing water producing apparatus, the degree of freedom of the layout of the components of the apparatus can be obtained as compared with the conventional mixer.
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-031841 | 2004-02-09 | ||
JP2004031841 | 2004-02-09 |
Publications (1)
Publication Number | Publication Date |
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WO2005075361A1 true WO2005075361A1 (ja) | 2005-08-18 |
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PCT/JP2004/015792 WO2005075361A1 (ja) | 2004-02-09 | 2004-10-25 | 殺菌水製造装置の混合手段 |
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WO (1) | WO2005075361A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1731613A2 (en) * | 1999-07-09 | 2006-12-13 | Degussa GmbH | Nucleotide sequence for the zwf gene |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10182325A (ja) * | 1996-12-20 | 1998-07-07 | Cytec Kk | 次亜塩素酸ナトリウムの殺菌力増強装置 |
JP2001300546A (ja) * | 2000-04-28 | 2001-10-30 | Kao Corp | 殺菌水の製造方法 |
JP2003200174A (ja) * | 2002-01-09 | 2003-07-15 | Okazaki Toshio | 殺菌水の製造装置並びに殺菌水を用いる歯科研削装置および殺菌水の製造方法 |
-
2004
- 2004-10-25 WO PCT/JP2004/015792 patent/WO2005075361A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10182325A (ja) * | 1996-12-20 | 1998-07-07 | Cytec Kk | 次亜塩素酸ナトリウムの殺菌力増強装置 |
JP2001300546A (ja) * | 2000-04-28 | 2001-10-30 | Kao Corp | 殺菌水の製造方法 |
JP2003200174A (ja) * | 2002-01-09 | 2003-07-15 | Okazaki Toshio | 殺菌水の製造装置並びに殺菌水を用いる歯科研削装置および殺菌水の製造方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1731613A2 (en) * | 1999-07-09 | 2006-12-13 | Degussa GmbH | Nucleotide sequence for the zwf gene |
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