JPS5639078A - Recovery of cyanuric acid from waste containing chloroisocyanuric acid - Google Patents
Recovery of cyanuric acid from waste containing chloroisocyanuric acidInfo
- Publication number
- JPS5639078A JPS5639078A JP11492679A JP11492679A JPS5639078A JP S5639078 A JPS5639078 A JP S5639078A JP 11492679 A JP11492679 A JP 11492679A JP 11492679 A JP11492679 A JP 11492679A JP S5639078 A JPS5639078 A JP S5639078A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- ammonia
- stage
- chloroisocyanuric
- cyanuric acid
- 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
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
PURPOSE: A waste liquid containing chloroisocyanuric acid is mixed with ammonia or an ammonium salt at a specific pH and a specific oxidation-reduction potential to obtain high-purity crystals of cyanuric acid safely and inexpensively in high yield.
CONSTITUTION: A waste liquid containing chlorocyanuric acid or its salt is combined with ammonia or an ammonium salt at a pH of 4W9 and an oxidation-reduction potential of 300W1,200mV and the crystals of cyanuric acid precipitated are separated. The process is preferably divided into two stages, that is, the first stage where the chloroisocyanuric acid contacts with ammonia and the second stage where cyanuric acid is crystallized. The first stage is effected in a neutral or acidic condition, while the second one is conducted in an alkaline condition, thus preventing the formation of dangerous nitrogen trichloride and increasing the amount of the objective compound precipitated.
EFFECT: The use of a reducing agent free from sulfate ion can avoid the formation of insoluble salts such as calcium sulfate to give the high-purity objective compound.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11492679A JPS5835998B2 (en) | 1979-09-06 | 1979-09-06 | Method for recovering cyanuric acid compounds from wastewater containing chloroisocyanuric acid compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11492679A JPS5835998B2 (en) | 1979-09-06 | 1979-09-06 | Method for recovering cyanuric acid compounds from wastewater containing chloroisocyanuric acid compounds |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5639078A true JPS5639078A (en) | 1981-04-14 |
| JPS5835998B2 JPS5835998B2 (en) | 1983-08-05 |
Family
ID=14650072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11492679A Expired JPS5835998B2 (en) | 1979-09-06 | 1979-09-06 | Method for recovering cyanuric acid compounds from wastewater containing chloroisocyanuric acid compounds |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5835998B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980214A (en) * | 2013-11-01 | 2014-08-13 | 山东大明消毒科技有限公司 | Method for treating waste gas and wastewater in trichloroisocyanuric acid production process |
-
1979
- 1979-09-06 JP JP11492679A patent/JPS5835998B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980214A (en) * | 2013-11-01 | 2014-08-13 | 山东大明消毒科技有限公司 | Method for treating waste gas and wastewater in trichloroisocyanuric acid production process |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5835998B2 (en) | 1983-08-05 |
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