JPS5631485A - Method and apparatus for treating waste liquid - Google Patents
Method and apparatus for treating waste liquidInfo
- Publication number
- JPS5631485A JPS5631485A JP10643379A JP10643379A JPS5631485A JP S5631485 A JPS5631485 A JP S5631485A JP 10643379 A JP10643379 A JP 10643379A JP 10643379 A JP10643379 A JP 10643379A JP S5631485 A JPS5631485 A JP S5631485A
- Authority
- JP
- Japan
- Prior art keywords
- triethylamine
- mineral acid
- lower layer
- upper layer
- polyisocyanate
- 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
- 239000007788 liquid Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 239000002699 waste material Substances 0.000 title abstract 2
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 abstract 16
- 239000002253 acid Substances 0.000 abstract 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 3
- 239000011707 mineral Substances 0.000 abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 2
- 239000005011 phenolic resin Substances 0.000 abstract 2
- 229920001228 polyisocyanate Polymers 0.000 abstract 2
- 239000005056 polyisocyanate Substances 0.000 abstract 2
- 239000012260 resinous material Substances 0.000 abstract 2
- 239000000243 solution Substances 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
Landscapes
- Physical Water Treatments (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To recover and remove triethylamine from an upper layer certainly, by absorbing an exhaust gas generated during cast molding according to a cold box method in a mineral acid and adding an alkali to the obtained waste liquid to separate into an upper and a lower layer.
CONSTITUTION: An exhaust gas containing triethylamine, a polyisocyanate and a phenol resin is introduced into an absorbing tower 10 from a duct 9 and contacted with an aqueous mineral acid solution sucked up by a pump 14 and injected from a nozzle 14 and the aqueous mineral acid solution containing triethylamine or the like absorbed therein is fallen to a storage tank. Subsequently, an aqueous solution containing an increased amount of triethylamine or the like is sent to a separation tank 25 through a pipe 27 and, herein, an alkali liquid 3 is added to form an upper layer containing a large amount of triethylamine and a lower layer containing a resinous material consisting of gelled polyisocyanate and phenol resin. Then, from the upper layer, triethlamine is removed and recovered, while the resinous material contained in the lower layer is removed by filtration and activated carbon treatment.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10643379A JPS5631485A (en) | 1979-08-21 | 1979-08-21 | Method and apparatus for treating waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10643379A JPS5631485A (en) | 1979-08-21 | 1979-08-21 | Method and apparatus for treating waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5631485A true JPS5631485A (en) | 1981-03-30 |
Family
ID=14433509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10643379A Pending JPS5631485A (en) | 1979-08-21 | 1979-08-21 | Method and apparatus for treating waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5631485A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002069042A (en) * | 2000-08-23 | 2002-03-08 | Sumitomo Chem Co Ltd | Triethylamine recovery method and emulsion layer reduction method |
| CN103304005A (en) * | 2012-03-15 | 2013-09-18 | 北京化工大学 | Method for removing phenol in phenol contained wastewater by using hollow fiber membrane |
-
1979
- 1979-08-21 JP JP10643379A patent/JPS5631485A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002069042A (en) * | 2000-08-23 | 2002-03-08 | Sumitomo Chem Co Ltd | Triethylamine recovery method and emulsion layer reduction method |
| CN103304005A (en) * | 2012-03-15 | 2013-09-18 | 北京化工大学 | Method for removing phenol in phenol contained wastewater by using hollow fiber membrane |
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