CN101157487A - Method for aerating separating and purifying weak acidic harmful gas dissolved in waste water - Google Patents
Method for aerating separating and purifying weak acidic harmful gas dissolved in waste water Download PDFInfo
- Publication number
- CN101157487A CN101157487A CNA2007100500479A CN200710050047A CN101157487A CN 101157487 A CN101157487 A CN 101157487A CN A2007100500479 A CNA2007100500479 A CN A2007100500479A CN 200710050047 A CN200710050047 A CN 200710050047A CN 101157487 A CN101157487 A CN 101157487A
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- CN
- China
- Prior art keywords
- waste water
- aerating
- weak acidic
- separating
- acidic harmful
- 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
- 230000002378 acidificating effect Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002351 wastewater Substances 0.000 title claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005273 aeration Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 230000002000 scavenging effect Effects 0.000 claims description 3
- 238000011282 treatment Methods 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 4
- 239000002253 acid Substances 0.000 abstract description 3
- 239000003513 alkali Substances 0.000 abstract description 3
- 150000003839 salts Chemical class 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- 150000007513 acids Chemical class 0.000 abstract 1
- 238000001647 drug administration Methods 0.000 abstract 1
- 238000010926 purge Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000005276 aerator Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- -1 metallurgy Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Abstract
The invention provides an aerating method for separating and purifying weak acidic harmful gases dissolved in waste water. The method comprises aerating and purging weak acidic harmful gases such as hydrogen sulfide, etc. in circulating water or the waste water with air or other gases; gases stripped out via aeration are introduced into an activated carbon adsorption tower or a wet adsorption purification tower and emitted to the atmosphere after purification. The method belongs to a physical treatment method and the stripping separation rate can exceed 90 percent. Not only hydrogen sulfide can be effectively removed, but also the circulating water can be reused, so the invention does not have the problem that the quality of the circulating water can be deteriorated due to the increase of accumulative concentration of acids, alkali and salts produced in the treatment by drug administration method.
Description
Technical field
The present invention relates to the method that a kind of method that adopts aeration to carry out wastewater treatment, especially aerating separating and purifying are dissolved in the weak acidic harmful gas in the waste water.
Background technology
The harmful slightly acidic gas dissolving of one class such as hydrogen sulfide can cause the circulating washing water water quality deterioration and cause atmospheric pollution from recirculated water and water processing establishment volatilization in circulating washing water.
The coal gas, the petroleum gas that contain hydrogen sulfide at washing process, all can dissolve and absorb a certain amount of hydrogen sulfide one class sour gas, cause water quality deterioration and recirculated water facility regional air to pollute.
Summary of the invention
The method that the purpose of this invention is to provide a kind of physics is handled the weak acidic harmful gas in the waste water, and the cycle water of both having avoided chemical treatments to produce worsens phenomenon, reaches the standard of water treatment again.
The technical solution used in the present invention is:
Show that after deliberation under solutions of weak acidity, weak acidic harmful gas can be by the aeration separation method with the one class deleterious acidic gas delivery of hydrogen sulfide in the waste water.
The present invention is under the solutions of weak acidity of PH=5.3-7.0, adopts the hydrogen sulfide class weak acidic harmful gas in air or other gas aeration stripping recirculated water or the waste water.
Described hydrogen sulfide stripping, vapour-liquid ratio reaches 70, and the stripping rate can reach more than 90%.The gas that comes out behind aeration stripping enters activated carbon adsorber or the wet absorption scavenging tower is handled, and purifies the back emptying.
Present method belongs to the physical treatment method, can reach the stripping separating effect more than 90%, effective elimination hydrogen sulfide, recirculated water also can continue to use, and the recirculated water dispensing can not occur and handle the circulating water quality deterioration phenomenon that acid, alkali, the increase of salt accumulated concentrations of generation cause.Meet in the world the direction and the theory that can guarantee long-term closed cycle after the circulating water treatment of pursuing.
The scope of application of the present invention: the recirculated water and the wastewater treatment of harmful slightly acidic gases such as metallurgy, coal chemical industry, petroleum chemical industry sulfide hydrogen, prevent the rising of dissolved matter content such as recirculated water acid, alkali, salt, alleviate pollution of plant area's air curing hydrogen one class obnoxious flavour and outer draining pollution greatly water body environment.
Description of drawings
Fig. 1 is recirculated water separates weak acidic harmful gas with aerating wastewater a schematic diagram.
Embodiment
As shown in the figure, circulating washing water is from gas double vertical tube cooling washing process; Gases such as the used air of aeration can be by centrifugal blower, roots blower air feed; In aerator tank, gas contacts with recirculated water, advertises and takes out of being dissolved in hydrogen sulfide one class slightly acidic gas in the recirculated water; The process aeration removes the recirculated water of hydrogen sulfide, continues to enter settling tank and removes suspended substance; From the H 2 S-containing gas that aerator tank comes out, enter activated carbon adsorber or the wet absorption scavenging tower is handled.Purify the direct emptying of back gas.
The contriver has done the test of gas washing recirculated water hydrogen sulfide stripping, and result of study shows
| Test type | PH | Vapour-liquid ratio | Hydrogen sulfide stripping rate (%) |
| Small-scale test | 5.3～7.0 | 70 | (91.8 mean value) |
| Commerical test | 6～7 | 5.9 | 40～45 |
The type approval test vapour-liquid ratio is less, so hydrogen sulfide stripping effect is not fine, improves vapour-liquid ratio, and the corresponding raising of hydrogen sulfide stripping effect meeting can reach the stripping separating effect more than 90%.
In stripping temperature degree, water capacity than under the condition with higher, if select the hydrogen sulfide one class slightly acidic gas in the activated carbon adsorber purification stripping gas, then must before adsorption tower, increase one-level cooling and dehumidifying device, prevent that liquid moisture content from entering the active carbon filler layer, cause the packing layer moisture absorption to be stopped up.If stripping gas adopts wet purification, then need not cooling and dehumidifying.
Claims (3)
1. an aerating separating and purifying is dissolved in the method for the weak acidic harmful gas in the waste water, it is characterized in that: under the solutions of weak acidity of PH=5.3～7.0, adopt the hydrogen sulfide class weak acidic harmful gas in air or other gas aeration stripping recirculated water or the waste water.
2. aerating separating and purifying according to claim 1 is dissolved in the method for the weak acidic harmful gas in the waste water, it is characterized in that: described hydrogen sulfide stripping, and vapour-liquid ratio reaches 70, and the stripping rate can reach more than 90%.
3. aerating separating and purifying according to claim 1 is dissolved in the method for the weak acidic harmful gas in the waste water, it is characterized in that: the gas that comes out behind aeration stripping enters activated carbon adsorber or the wet absorption scavenging tower is handled, and purifies the back emptying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100500479A CN101157487A (en) | 2007-09-12 | 2007-09-12 | Method for aerating separating and purifying weak acidic harmful gas dissolved in waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100500479A CN101157487A (en) | 2007-09-12 | 2007-09-12 | Method for aerating separating and purifying weak acidic harmful gas dissolved in waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101157487A true CN101157487A (en) | 2008-04-09 |
Family
ID=39305739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100500479A Pending CN101157487A (en) | 2007-09-12 | 2007-09-12 | Method for aerating separating and purifying weak acidic harmful gas dissolved in waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101157487A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335874A (en) * | 2013-06-14 | 2013-10-02 | 宁波大学 | Constant-pressure inner loop acidification blowing absorption device |
| CN104843951A (en) * | 2015-05-28 | 2015-08-19 | 武汉科技大学 | Pretreatment method for desulfurization waste solution by vacuum potassium carbonate coal gas |
| CN105417675A (en) * | 2015-12-09 | 2016-03-23 | 大唐环境产业集团股份有限公司 | Device and method for restoring desulphurized sea water based on pure oxygen aeration |
| CN109482046A (en) * | 2018-12-07 | 2019-03-19 | 中国矿业大学(北京) | A kind of explosion-proof anti-poisoning device for the maintenance of wastewater containing phenol and cyanide sewer catch basin |
-
2007
- 2007-09-12 CN CNA2007100500479A patent/CN101157487A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335874A (en) * | 2013-06-14 | 2013-10-02 | 宁波大学 | Constant-pressure inner loop acidification blowing absorption device |
| CN103335874B (en) * | 2013-06-14 | 2015-06-17 | 宁波大学 | Constant-pressure inner loop acidification blowing absorption device |
| CN104843951A (en) * | 2015-05-28 | 2015-08-19 | 武汉科技大学 | Pretreatment method for desulfurization waste solution by vacuum potassium carbonate coal gas |
| CN104843951B (en) * | 2015-05-28 | 2017-03-29 | 武汉科技大学 | A kind of preprocess method of vacuum potassium carbonate coal gas desulfurization waste liquid |
| CN105417675A (en) * | 2015-12-09 | 2016-03-23 | 大唐环境产业集团股份有限公司 | Device and method for restoring desulphurized sea water based on pure oxygen aeration |
| CN105417675B (en) * | 2015-12-09 | 2018-01-19 | 大唐环境产业集团股份有限公司 | A kind of desulfurization restoring sea water device and restoration methods based on pure oxygen aeration |
| CN109482046A (en) * | 2018-12-07 | 2019-03-19 | 中国矿业大学(北京) | A kind of explosion-proof anti-poisoning device for the maintenance of wastewater containing phenol and cyanide sewer catch basin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080409 |