JPH0218907B2 - - Google Patents
Info
- Publication number
- JPH0218907B2 JPH0218907B2 JP23692486A JP23692486A JPH0218907B2 JP H0218907 B2 JPH0218907 B2 JP H0218907B2 JP 23692486 A JP23692486 A JP 23692486A JP 23692486 A JP23692486 A JP 23692486A JP H0218907 B2 JPH0218907 B2 JP H0218907B2
- Authority
- JP
- Japan
- Prior art keywords
- amount
- calcium
- added
- wastewater
- oxalate
- 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
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 37
- 239000011575 calcium Substances 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 23
- 239000002351 wastewater Substances 0.000 claims description 22
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 17
- 229910052791 calcium Inorganic materials 0.000 claims description 17
- 235000006408 oxalic acid Nutrition 0.000 claims description 12
- 150000003839 salts Chemical class 0.000 claims description 4
- 230000001112 coagulating effect Effects 0.000 claims 1
- 230000001376 precipitating effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 238000002474 experimental method Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 6
- 229910001424 calcium ion Inorganic materials 0.000 description 6
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 5
- 235000011121 sodium hydroxide Nutrition 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 4
- 238000005341 cation exchange Methods 0.000 description 3
- VEPSWGHMGZQCIN-UHFFFAOYSA-H ferric oxalate Chemical compound [Fe+3].[Fe+3].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O VEPSWGHMGZQCIN-UHFFFAOYSA-H 0.000 description 3
- 230000003472 neutralizing effect Effects 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 description 2
- 229940039790 sodium oxalate Drugs 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229960004887 ferric hydroxide Drugs 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229940039748 oxalate Drugs 0.000 description 1
- 150000003891 oxalate salts Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23692486A JPS6391193A (ja) | 1986-10-03 | 1986-10-03 | カルシウム含有汚水の処理方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23692486A JPS6391193A (ja) | 1986-10-03 | 1986-10-03 | カルシウム含有汚水の処理方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6391193A JPS6391193A (ja) | 1988-04-21 |
| JPH0218907B2 true JPH0218907B2 (enrdf_load_stackoverflow) | 1990-04-27 |
Family
ID=17007769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23692486A Granted JPS6391193A (ja) | 1986-10-03 | 1986-10-03 | カルシウム含有汚水の処理方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6391193A (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07100155B2 (ja) * | 1987-04-15 | 1995-11-01 | 株式会社クボタ | 有機性汚水の処理方法 |
| JP4342119B2 (ja) * | 2000-04-06 | 2009-10-14 | 株式会社神戸製鋼所 | 孔開け加工時の保護用あて板及びそれを使用したプリント配線基板の孔開け加工方法 |
| JP2025064463A (ja) * | 2023-10-06 | 2025-04-17 | クボタ環境エンジニアリング株式会社 | 除去方法および除去装置 |
-
1986
- 1986-10-03 JP JP23692486A patent/JPS6391193A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6391193A (ja) | 1988-04-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |