IT1238005B - Chemical purification process for industrial sewage waste etc.with elevated chemical oxygen demand content - Google Patents
Chemical purification process for industrial sewage waste etc.with elevated chemical oxygen demand contentInfo
- Publication number
- IT1238005B IT1238005B IT01925490A IT1925490A IT1238005B IT 1238005 B IT1238005 B IT 1238005B IT 01925490 A IT01925490 A IT 01925490A IT 1925490 A IT1925490 A IT 1925490A IT 1238005 B IT1238005 B IT 1238005B
- Authority
- IT
- Italy
- Prior art keywords
- elevated
- industrial sewage
- chemical
- purification process
- oxygen demand
- Prior art date
Links
- 239000000126 substance Substances 0.000 title abstract 3
- 238000000746 purification Methods 0.000 title abstract 2
- 239000010865 sewage Substances 0.000 title abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title 1
- 229910052760 oxygen Inorganic materials 0.000 title 1
- 239000001301 oxygen Substances 0.000 title 1
- 239000002699 waste material Substances 0.000 title 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 4
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 125000000129 anionic group Chemical group 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 229910021645 metal ion Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000376 reactant Substances 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 230000007704 transition Effects 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 abstract 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The current invention refers to a chemical purification procedure for industrial sewage wastewater and similar with elevated COD content, consisting in using a reactive made up of 35% hydrogen peroxide in weight, activated by any type of metal ions, particularly those in transition, and preferably, Fe<2+> ion present as ferrous sulphate heptahydrate, characterised by the fact that the aforementioned reactants are used in the presence of sulphuric acid that acts as catalytic agent for the hydrogen ion concentration. Said concentration is set with a pH between 1.0 and 2.5 and, preferably between 1.5 and 2.0, while the relationship between the 35% hydrogen peroxide and the ferrous sulphate heptahydrate is generally from 0.5 - 2 / 0.5 - 1 and, preferably, 1 / 0.5 with respect to 1 part (weight) of the organic substrate to be treated. The process is furthermore characterised by the fact that it is intermittent, and makes it possible to eventually recover heat from the reaction as well as creating a higher yield of total, present COD (80-90%), corresponding to the contents of anionic tensoactive (90-95%) and the non ionic, isolated tensoactive (95-98%).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT01925490A IT1238005B (en) | 1990-02-02 | 1990-02-02 | Chemical purification process for industrial sewage waste etc.with elevated chemical oxygen demand content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT01925490A IT1238005B (en) | 1990-02-02 | 1990-02-02 | Chemical purification process for industrial sewage waste etc.with elevated chemical oxygen demand content |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| IT9019254A0 IT9019254A0 (en) | 1990-02-02 |
| IT9019254A1 IT9019254A1 (en) | 1991-08-03 |
| IT1238005B true IT1238005B (en) | 1993-06-21 |
Family
ID=11156154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT01925490A IT1238005B (en) | 1990-02-02 | 1990-02-02 | Chemical purification process for industrial sewage waste etc.with elevated chemical oxygen demand content |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1238005B (en) |
-
1990
- 1990-02-02 IT IT01925490A patent/IT1238005B/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| IT9019254A0 (en) | 1990-02-02 |
| IT9019254A1 (en) | 1991-08-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 0001 | Granted |