JPH0251541B2 - - Google Patents
Info
- Publication number
- JPH0251541B2 JPH0251541B2 JP24017185A JP24017185A JPH0251541B2 JP H0251541 B2 JPH0251541 B2 JP H0251541B2 JP 24017185 A JP24017185 A JP 24017185A JP 24017185 A JP24017185 A JP 24017185A JP H0251541 B2 JPH0251541 B2 JP H0251541B2
- Authority
- JP
- Japan
- Prior art keywords
- edta
- crystals
- crystallization tank
- waste liquid
- 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.)
- Expired
Links
- 239000013078 crystal Substances 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 31
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 29
- 238000002425 crystallisation Methods 0.000 claims description 26
- 230000008025 crystallization Effects 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 17
- 239000002699 waste material Substances 0.000 claims description 13
- 239000002253 acid Substances 0.000 claims description 10
- 238000011084 recovery Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000011550 stock solution Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical class [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Removal Of Specific Substances (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24017185A JPS62103050A (ja) | 1985-10-28 | 1985-10-28 | Ｅｄｔａ廃液からのｅｄｔａの回収方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24017185A JPS62103050A (ja) | 1985-10-28 | 1985-10-28 | Ｅｄｔａ廃液からのｅｄｔａの回収方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62103050A JPS62103050A (ja) | 1987-05-13 |
| JPH0251541B2 true JPH0251541B2 (de) | 1990-11-07 |
Family
ID=17055534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24017185A Granted JPS62103050A (ja) | 1985-10-28 | 1985-10-28 | Ｅｄｔａ廃液からのｅｄｔａの回収方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62103050A (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19619828A1 (de) * | 1996-05-16 | 1997-11-20 | Roger Noero | Verfahren zur Aufbereitung photographischer Bäder aus Color-Prozessen |
| JP4841738B2 (ja) * | 2001-03-30 | 2011-12-21 | オルガノ株式会社 | 高比重の種晶が充填された晶析反応装置および該装置を用いた晶析処理方法 |
| JP4669625B2 (ja) * | 2001-03-30 | 2011-04-13 | オルガノ株式会社 | 晶析反応成分回収手段を備えた晶析反応装置 |
| JP4669624B2 (ja) * | 2001-03-30 | 2011-04-13 | オルガノ株式会社 | 処理水の蒸発濃縮手段を備えた晶析反応装置 |
| CN103159637B (zh) * | 2013-03-25 | 2015-09-09 | 国药集团化学试剂有限公司 | 一种提升工业乙二胺四乙酸二钠品质的方法 |
-
1985
- 1985-10-28 JP JP24017185A patent/JPS62103050A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62103050A (ja) | 1987-05-13 |
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