JPS5743990A - Preparation of water treatment chemical - Google Patents
Preparation of water treatment chemicalInfo
- Publication number
- JPS5743990A JPS5743990A JP12045080A JP12045080A JPS5743990A JP S5743990 A JPS5743990 A JP S5743990A JP 12045080 A JP12045080 A JP 12045080A JP 12045080 A JP12045080 A JP 12045080A JP S5743990 A JPS5743990 A JP S5743990A
- Authority
- JP
- Japan
- Prior art keywords
- water
- chamber
- exchange membrane
- concentration
- naoh
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
PURPOSE: To enable the use of nonpurified raw salt having a large content of Ca ions, by keeping the concentration of NaOH in a cathodic chamber at a prescribed value when preparing Cl for sterilizing water by electrolyzing brine by an ion exchange membrane method.
CONSTITUTION: Cl or NaClO To be used for sterilizing city water and sewage is prepared with a small scale NaCl water electrolytic cell employing an cation exchange membrane method that is installed in the vicinity of the water sterilizing unit. In this process, an anode 3 is arranged in an anodic chamber 3' partitioned by the cation exchange membrane 2 in the electrolytic cell 1, and saturated brine obtained by putting non purified raw salt 8 and water 9 into a saturation tank 7 and by adjusting the concentration of Ca ions at a value of 1,000ppm or less is fed to the anodic chamber 3'. Water electrolysis is carried out by further adding water 12 to a cathodic chamber 4' equipped with a cathode 4 and by adjusting the concentration of NaOH formed at a value of 1W60g/l. Cl formed in the anodic chamber 3 is partly used for sterilization as it is and is partly led to a chamber 6 together with an NaOH liquid formed to form NaOCl, which is used for water sterilization. In this process, the ion exchange membrane 2 can be used for a long time without being clogged with hardly soluble Ca salts.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12045080A JPS5743990A (en) | 1980-08-29 | 1980-08-29 | Preparation of water treatment chemical |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12045080A JPS5743990A (en) | 1980-08-29 | 1980-08-29 | Preparation of water treatment chemical |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5743990A true JPS5743990A (en) | 1982-03-12 |
| JPH0118155B2 JPH0118155B2 (en) | 1989-04-04 |
Family
ID=14786485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12045080A Granted JPS5743990A (en) | 1980-08-29 | 1980-08-29 | Preparation of water treatment chemical |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5743990A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61295841A (en) * | 1985-06-25 | 1986-12-26 | Sankyo Seiki Mfg Co Ltd | Rectifier of small-sized motor |
-
1980
- 1980-08-29 JP JP12045080A patent/JPS5743990A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61295841A (en) * | 1985-06-25 | 1986-12-26 | Sankyo Seiki Mfg Co Ltd | Rectifier of small-sized motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0118155B2 (en) | 1989-04-04 |
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