JPS56147681A - Treatment for waste water containing heavy metal - Google Patents
Treatment for waste water containing heavy metalInfo
- Publication number
- JPS56147681A JPS56147681A JP4976380A JP4976380A JPS56147681A JP S56147681 A JPS56147681 A JP S56147681A JP 4976380 A JP4976380 A JP 4976380A JP 4976380 A JP4976380 A JP 4976380A JP S56147681 A JPS56147681 A JP S56147681A
- Authority
- JP
- Japan
- Prior art keywords
- heavy metal
- precipitate
- waste water
- org
- metal capturing
- 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.)
- Pending
Links
Abstract
PURPOSE: To remove contained heavy metals economically and perfectly by adding a heavy metal capturing agent or org. type and sodium sulfide to the waste water contg. heavy metals controlled to 4W12pH then performing solid-liquid separating operation thereby removing the precipitate.
CONSTITUTION: Caustic soda, slaked lime, sulfuric acid or the like is added to waste water contg. heavy metals, to control its pH to 4W12, to which a heavy metal capturing agent or org. system and sodium sulfide are added in arbitrary order or simultaneously, and the mixture is agitated for 5W15min to allow precipitate to deposit. Thence, said precipitate is removed by solid-liquid separating operation such as filtering, supernatant separation, or flotation. The comercial heavy metal capturing agents of org. system are usable as they are and the amount of addition of the sodium sulfide and the heavy metal capturing agents is usually 1.0W5.0 times equiv., more preferably 1.0W2.0 times equiv. It is possible to add filter aids such as diatomaceous earth in solid-liquid separation of the precipitate.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4976380A JPS56147681A (en) | 1980-04-15 | 1980-04-15 | Treatment for waste water containing heavy metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4976380A JPS56147681A (en) | 1980-04-15 | 1980-04-15 | Treatment for waste water containing heavy metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56147681A true JPS56147681A (en) | 1981-11-16 |
Family
ID=12840206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4976380A Pending JPS56147681A (en) | 1980-04-15 | 1980-04-15 | Treatment for waste water containing heavy metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56147681A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010527287A (en) * | 2007-05-16 | 2010-08-12 | エクソンモービル リサーチ アンド エンジニアリング カンパニー | Wastewater mercury removal method |
-
1980
- 1980-04-15 JP JP4976380A patent/JPS56147681A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010527287A (en) * | 2007-05-16 | 2010-08-12 | エクソンモービル リサーチ アンド エンジニアリング カンパニー | Wastewater mercury removal method |
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