CN201058823Y - Treatment facility for sewage containing low-concentration perfluorooctanoic acid ammonium - Google Patents
Treatment facility for sewage containing low-concentration perfluorooctanoic acid ammonium Download PDFInfo
- Publication number
- CN201058823Y CN201058823Y CNU2007201106780U CN200720110678U CN201058823Y CN 201058823 Y CN201058823 Y CN 201058823Y CN U2007201106780 U CNU2007201106780 U CN U2007201106780U CN 200720110678 U CN200720110678 U CN 200720110678U CN 201058823 Y CN201058823 Y CN 201058823Y
- Authority
- CN
- China
- Prior art keywords
- nanofiltration membrane
- valve
- waste water
- foam
- tunnel
- 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 - Lifetime
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- YOALFLHFSFEMLP-UHFFFAOYSA-N azane;2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluorooctanoic acid Chemical compound [NH4+].[O-]C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F YOALFLHFSFEMLP-UHFFFAOYSA-N 0.000 title 1
- 239000010865 sewage Substances 0.000 title 1
- 238000001728 nano-filtration Methods 0.000 claims abstract description 49
- 239000002351 wastewater Substances 0.000 claims abstract description 41
- 239000006260 foam Substances 0.000 claims abstract description 37
- 239000012528 membrane Substances 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000003860 storage Methods 0.000 claims description 25
- YDDULLXUFDTAKJ-UHFFFAOYSA-M octanoate tetrafluoroazanium Chemical compound F[N+](F)(F)F.CCCCCCCC([O-])=O YDDULLXUFDTAKJ-UHFFFAOYSA-M 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 11
- SNGREZUHAYWORS-UHFFFAOYSA-N perfluorooctanoic acid Chemical compound OC(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F SNGREZUHAYWORS-UHFFFAOYSA-N 0.000 claims description 11
- 230000003139 buffering effect Effects 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 5
- 239000012141 concentrate Substances 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 12
- 238000000926 separation method Methods 0.000 abstract description 12
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- IAFACTRFHSQIMM-UHFFFAOYSA-N [NH4+].C(CCCCCCC)(=O)[O-].[F] Chemical compound [NH4+].C(CCCCCCC)(=O)[O-].[F] IAFACTRFHSQIMM-UHFFFAOYSA-N 0.000 abstract 5
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a wastewater with low concentration full fluorine octanoic acid ammonium treatment plant, wherein the clear and transparent wastewater with full fluorine octanoic acid ammonium is pumped in a foam separation tower for the foam separation, the wastewater foam on the top of the tower is removed, getting the high concentration full fluorine octanoic acid ammonium water solution which can be reused; the low concentration full fluorine octanoic acid ammonium water solution is got at the bottom of the tower; the full fluorine octanoic acid ammonium water solution which is discharged by the tower bottom of the foam separation tower is filtered by a first-level nanofiltration membrane for the condensation and the nanofiltration of the collection liquid, and is then returned to the foam separation tower for the foam separation again; the filtering liquid which passes through the first-level nanofiltration membrane enters a second-level nanofiltration membrane; the filtering liquid which passes through the second-level nanofiltration membrane meets the national wastewater effluent standard and is discharged; the condensed liquid of the second-level nanofiltration membrane is returned to the second-level nanofiltration membrane; thereby the recycling of useful substances in the wastewater and the wastewater treatment are completed. In the wastewater treatment, the utility model does not need to use any agent, thereby not causing new pollutions, reaching the zero emission and recycling the useful substances; moreover, the whole treatment process is conducted at the normal temperature, thereby the energy consumption is low.
Description
Technical field
The utility model relates to and contains the surface active agent wastewater processing, especially relates to a kind of low-concentration perfluoro ammonium caprylate wastewater treatment equipment that contains.
Background technology
Dispersion method will add certain amount of dispersant ammonium perfluorocaprylate (PFOA) when producing teflon resin, outside the last ammonium perfluorocaprylate waste water discharge system with lower concentration.Ammonium perfluorocaprylate is a kind of tensio-active agent efficiently that costs an arm and a leg, and difficult for biological degradation has great harm to environment.Therefore waste water is handled to reclaim ammonium perfluorocaprylate, existing economic implications has social effect again.Existing treatment process has: the distillation absorption method, and its shortcoming is the energy consumption height, and is uneconomical; The precipitator method, as patent fluorine bonded treatment process and treated substance (application number 01802169.7), its shortcoming is to add precipitation agent, produces new useless solids.
Summary of the invention
In order to handle waste water cost-effectively, reclaim useful matter simultaneously, do not produce new refuse, the purpose of this utility model is to provide employing a kind of low-concentration perfluoro ammonium caprylate wastewater treatment equipment that contains.The method that nanofiltration and foam separation combine is handled the ammonium perfluorocaprylate waste water that contains lower concentration.
The technical scheme that its technical problem that solves the utility model adopts is:
The waste water storage tank is connected to from as clear as crystal the containing ammonium perfluorocaprylate waste water input tube, concentrate nanofiltration trapped fluid input tube and waste water output tube of centrifugal, output waste water is through water pump, first valve, liquid spinner-type flowmeter, insert from the foam separation top of tower, and liquid distributor is equipped with in the access tube end; The pressurized air of air compressor inserts buffering humidification jar through second valve, buffering humidification jar is divided into two the tunnel, one the tunnel through the 3rd valve, gas rotameter, insert from the foam separation tower bottom, the foam separation tower bottom is equipped with gas distribution grid, another road connects blow-off valve, be connected to froth breaker from foam separation top of tower fairlead, the 4th valve inserts the foam solution storage tank, the raffinate storage tank is connected to through the input tube of the 5th valve from the lower perfluoro ammonium caprylate aqueous solution of foam separating tower bottom concentration, raffinate output tube and concentrated nanofiltration trapped fluid input tube, output raffinate pipe connects the one-level nanofiltration membrane component through one-level nanofiltration membrane feedstock pump; The one-level nanofiltration membrane component is divided into two the tunnel, one tunnel the 6th valve through concentrated nanofiltration trapped fluid output tube connects the waste water storage tank, another Lu Jingdi seven valves, secondary nanofiltration membrane feedstock pump connect the secondary nanofiltration membrane component, the secondary nanofiltration membrane component is divided into two the tunnel, one the tunnel connects the raffinate storage tank through the 8th valve, and another Lu Jingdi nine valves connect waste water discharge opening.
The beneficial effect that the utlity model has is: the method that nanofiltration and foam separation combine is handled the ammonium perfluorocaprylate waste water that contains lower concentration.Do not add any medicament in the wastewater treatment process, can not produce new pollution, reach zero release after the processing, and reclaim useful matter, all be in normal temperature in the treating processes, energy consumption is low.
Description of drawings
Accompanying drawing is to contain low-concentration perfluoro ammonium caprylate wastewater treatment process synoptic diagram.
Among the figure: 1. air compressor, 2. buffering humidification jar, 3. blow-off valve, 4. gas rotameter, 5. waste water storage tank, 6. water pump, 7. liquid spinner-type flowmeter, 8. gas distribution grid, 9. foam separating tower, 10. liquid distributor, 11. froth breakers, 12. foam solution storage tanks, 13. the raffinate storage tank, 14. one-level nanofiltration membrane feedstock pumps, 15. one-level nanofiltration membrane components, 16. secondary nanofiltration membrane feedstock pump, 17. secondary nanofiltration membrane components, 18. waste water discharge openings.
Embodiment
As shown in drawings, waste water storage tank 5 of the present utility model is connected to from as clear as crystal the containing ammonium perfluorocaprylate waste water input tube, concentrate nanofiltration trapped fluid input tube and waste water output tube of centrifugal, output waste water is through water pump 6, first valve, liquid spinner-type flowmeter 7, insert from foam separating tower 9 tops, and liquid distributor 10 is equipped with in the access tube end; The pressurized air of air compressor 1 inserts buffering humidification jar 2 through second valve, buffering humidification jar 2 is divided into two the tunnel, one the tunnel through the 3rd valve, gas rotameter 4, insert from foam separating tower 9 bottoms, gas distribution grid 8 is equipped with in foam separating tower 9 bottoms, another road connects blow-off valve 3, be connected to froth breaker 11 from foam separating tower 9 top fairleads, the 4th valve inserts foam solution storage tank 12, raffinate storage tank 13 is connected to through the input tube of the 5th valve from the lower perfluoro ammonium caprylate aqueous solution of foam separating tower 9 bottom concentration, raffinate output tube and concentrated nanofiltration trapped fluid input tube, output raffinate pipe connects one-level nanofiltration membrane component 15 through one-level nanofiltration membrane feedstock pump 14; One-level nanofiltration membrane component 15 is divided into two the tunnel, one tunnel the 6th valve through concentrated nanofiltration trapped fluid output tube connects waste water storage tank 5, another Lu Jingdi seven valves, secondary nanofiltration membrane feedstock pump 16 connect secondary nanofiltration membrane component 17, secondary nanofiltration membrane component 17 is divided into two the tunnel, one the tunnel connects raffinate storage tank 13 through the 8th valve, and another Lu Jingdi nine valves connect waste water discharge opening 18.
As shown in drawings, technical process of the present utility model and principle of work are as follows:
(1) at first waste water is filtered with ultracentrifuge, with solid particulate filtering wherein, obtain the as clear as crystal ammonium perfluorocaprylate waste water that contains, and waste water is transported in the waste water storage tank 5;
(2) use water pump 6 through liquid spinner-type flowmeters 7 waste water in the waste water storage tank 5, by liquid distributor 10 (aperture 0.1～5mm) ejection that is contained in the foam separating tower 9, after with compressor 1 air being compressed simultaneously, through buffering humidification jar 2, enter foam separating tower 9 bottoms after gas rotameter 4 meterings, (foam separation is carried out in aperture 0.05～2mm) ejection in foam separating tower 9 by gas distribution grid 8;
(3) foam overflows from foam separating tower 9 tops and enters froth breaker 11, obtains the high density perfluoro ammonium caprylate aqueous solution behind the foam froth breaking and enters foam solution storage tank 12, can turn back to utilize in the production again or further concentrate to obtain the solid ammonium perfluorocaprylate;
(4) flow out the lower perfluoro ammonium caprylate aqueous solution of concentration from foam separating tower 9 bottoms, enter raffinate storage tank 13;
(5) the low concentration perfluoro ammonium caprylate aqueous solution in the raffinate storage tank 13 is sent into one-level nanofiltration membrane component 15 with one-level nanofiltration membrane feedstock pump 14 and filter, nanofiltration trapped fluid (being concentrated solution) turns back in the waste water storage tank 5;
(6) liquid that sees through of one-level nanofiltration membrane component 15 is sent into secondary nanofiltration membrane component 17 with secondary nanofiltration membrane feedstock pump 16;
(7) the nanofiltration trapped fluid of secondary nanofiltration membrane component 17 (being concentrated solution) turns back in the raffinate storage tank 13;
(8) liquid that sees through of secondary nanofiltration membrane component 17 has reached national wastewater discharge standard and the discharge system.
The recycling of the useful thing that contains low-concentration perfluoro ammonium caprylate waste water and the clean of waste water have been finished by above-mentioned 8 steps.
Claims (1)
1. contain the low-concentration perfluoro ammonium caprylate wastewater treatment equipment, it is characterized in that: waste water storage tank (5) be connected to from centrifugal as clear as crystal contain ammonium perfluorocaprylate waste water input tube, concentrate nanofiltration trapped fluid input tube and waste water output tube, output waste water is through water pump (6), first valve, liquid spinner-type flowmeter (7), insert from foam separating tower (9) top, liquid distributor (10) is equipped with in the access tube end, the pressurized air of air compressor (1) inserts buffering humidification jar (2) through second valve, buffering humidification jar (2) is divided into two the tunnel, one the tunnel through the 3rd valve, gas rotameter (4), insert from foam separating tower (9) bottom, gas distribution grid (8) is equipped with in foam separating tower (9) bottom, another road connects blow-off valve (3), be connected to froth breaker (11) from foam separating tower (9) top fairlead, the 4th valve inserts foam solution storage tank (12), raffinate storage tank (13) is connected to through the input tube of the 5th valve from the lower perfluoro ammonium caprylate aqueous solution of foam separating tower (9) bottom concentration, raffinate output tube and concentrated nanofiltration trapped fluid input tube, output raffinate pipe connects one-level nanofiltration membrane component (15) through one-level nanofiltration membrane feedstock pump (14); One-level nanofiltration membrane component (15) is divided into two the tunnel, one tunnel the 6th valve through concentrated nanofiltration trapped fluid output tube connects waste water storage tank (5), another Lu Jingdi seven valves, secondary nanofiltration membrane feedstock pump (16) connect secondary nanofiltration membrane component (17), secondary nanofiltration membrane component (17) is divided into two the tunnel, one the tunnel connects raffinate storage tank (13) through the 8th valve, and another Lu Jingdi nine valves connect waste water discharge opening (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201106780U CN201058823Y (en) | 2007-06-15 | 2007-06-15 | Treatment facility for sewage containing low-concentration perfluorooctanoic acid ammonium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201106780U CN201058823Y (en) | 2007-06-15 | 2007-06-15 | Treatment facility for sewage containing low-concentration perfluorooctanoic acid ammonium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201058823Y true CN201058823Y (en) | 2008-05-14 |
Family
ID=39407285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201106780U Expired - Lifetime CN201058823Y (en) | 2007-06-15 | 2007-06-15 | Treatment facility for sewage containing low-concentration perfluorooctanoic acid ammonium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201058823Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102643189A (en) * | 2012-03-31 | 2012-08-22 | 中昊晨光化工研究院 | System and method for recovering perfluoro caprylic acid from tail gas |
| CN105481144A (en) * | 2016-01-07 | 2016-04-13 | 陕西理工学院 | Device and method for efficient treatment of copper-containing wastewater |
| CN113045079A (en) * | 2021-03-31 | 2021-06-29 | 聊城氟尔新材料科技有限公司 | System and process for recovering dispersing agent in polyfluorinated ethylene propylene washing wastewater |
-
2007
- 2007-06-15 CN CNU2007201106780U patent/CN201058823Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102643189A (en) * | 2012-03-31 | 2012-08-22 | 中昊晨光化工研究院 | System and method for recovering perfluoro caprylic acid from tail gas |
| CN102643189B (en) * | 2012-03-31 | 2014-07-02 | 中昊晨光化工研究院 | System and method for recovering perfluoro caprylic acid from tail gas |
| CN105481144A (en) * | 2016-01-07 | 2016-04-13 | 陕西理工学院 | Device and method for efficient treatment of copper-containing wastewater |
| CN113045079A (en) * | 2021-03-31 | 2021-06-29 | 聊城氟尔新材料科技有限公司 | System and process for recovering dispersing agent in polyfluorinated ethylene propylene washing wastewater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070615 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |