CN104211247A - Device for processing high-concentration ammonia nitrogen in rare-earth wastewater by using surfactant - Google Patents
Device for processing high-concentration ammonia nitrogen in rare-earth wastewater by using surfactant Download PDFInfo
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- CN104211247A CN104211247A CN201410425533.4A CN201410425533A CN104211247A CN 104211247 A CN104211247 A CN 104211247A CN 201410425533 A CN201410425533 A CN 201410425533A CN 104211247 A CN104211247 A CN 104211247A
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- ammonia nitrogen
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- concentration ammonia
- air compressor
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Abstract
The invention relates to a device for processing high-concentration ammonia nitrogen in a rare-earth wastewater by using a surfactant, and belongs to the field of sewage treatment. The device comprises an air compressor (1), a high-pressure pump (2), a high-pressure steam pump (3), a heat exchanger (4), a first-stage denitrification device (5), a second-stage denitrification device (6), a catalytic reduction pot (7), quartz glass fiber membranes (8), a heavy metal catalyst (9), a draught fan (10), an air outlet (11), a spray tank (12) and a wastewater outlet (13); the air compressor (1), the high-pressure pump (2), the high-pressure steam pump (3) and the heat exchanger (4) are connected with one another; and the quartz glass fiber membranes are arranged inside the first-stage denitrification device (5) and the second-stage denitrification device (6). The quartz glass fiber membranes adopt hollow fiber membrane elements, the fibers are evenly distributed, and are fine and smooth in grain and strong in hydrophilicity, the device is simple to operate, and high in removal rate, the production cost is saved, the ammonia nitrogen removal rate of the high-concentration ammonia nitrogen wastewater which is processed by the device reaches over 99.9%, and the environmental pollution is greatly relieved.
Description
Technical field
The invention discloses tensio-active agent process RE waste water middle and high concentration ammonia nitrogen device, belong to sewage treatment area.
Background technology
China's rare-earth mineral kind is more, smelting technology more complicated, production process produces a large amount of waste water, often produce 1t rare earth oxygenate and produce 60 ~ 100t waste water, mainly comprise acidic fluorine-containing waste water, alkaline fluoride waste, and rare earth extraction is separated the ammonia nitrogen waste water of saponification organic phase and the generation of ammonium bicarbonate precipitation rare earth process, wherein the pollution problem of ammonia nitrogen waste water is particularly outstanding, and in waste water, ammonia nitrogen exceeds standard tens times even hundreds of times, brings serious pollution to environment.
At present, the method utilizing catalyst effect to make high-concentration ammonia nitrogen in waste water change into nitrogen becomes possibility, such as: Lee fish, the one that Zhang Rong etc. describe in document " ammonia nitrogen in Co_Bi catalyst wet oxidation degraded percolate " processes high-concentration ammonia nitrogenous wastewater with Co/Bi catalyzer, ammonia is converted into nitrogen discharge, but need high temperature 125 ~ 320 DEG C, just katalysis is played under high pressure 0.5 ~ 2.0MPa condition, this certainly will cause the huge consumption of the energy, the processing costs brought thus is too expensive, cannot run in reality generates.Traditional ammonia still process method take water vapour as stripping medium, but need strong basicity environment simultaneously, and the ammonia nitrogen in waste water is with NH
3form drain in air, easily cause secondary pollution risk, in order to eliminate the secondary pollution brought environment, people generally adopt H
2o or dilute sulphuric acid absorb ammonia, but this product utilizing absorption treatment process to obtain is impure, and concentration is too low, does not have marketable value, remains a kind of waste water also existed with ammonia nitrogen in high density.
Summary of the invention
The object of the invention is to the problem that pollution is large, cost is high, ammonia nitrogen removal frank is low existed for prior art scheme, provide tensio-active agent process RE waste water middle and high concentration ammonia nitrogen device, the method effectively can deviate from the ammonia nitrogen of RE waste water middle and high concentration, solve in prior art and pollute greatly, cost is high, the problem that ammonia nitrogen removal frank is low.
In order to achieve the above object, concrete technical scheme of the present invention is: tensio-active agent process RE waste water middle and high concentration ammonia nitrogen device is by air compressor machine (1), high-pressure pump (2), high pressure steam pump (3), interchanger (4), one-level denitrogenation device (5), secondary denitrogenation device (6), catalytic reduction tank (7), quartz glass fibre film (8), heavy metal catalyst (9), and induced draft fan (10), venting port (11), spray tank (12) and wastewater outlet (13) are formed; Air compressor machine (1), high-pressure pump (2), high pressure steam pump (3) are connected with interchanger (4), air compressor machine (1) is positioned at the top of high-pressure pump, high pressure steam pump (3) is positioned at interchanger (4) below, there is provided steam, quartz glass fibre film is positioned at one-level nitrogen rejection facility (5) and secondary nitrogen rejection facility (6) is inner.
What described quartz glass fibre film (8) adopted is hollow fiber film assembly, and membrane pore size is 0.1 ~ 0.2 μm, and thickness is 0.25 ~ 0.33mm, and water regain is 50 ~ 85mg/cm
2, membrane flux 12 ~ 15L/m
2h, working pressure 1.5Mpa.
The denitrification denitrogenation that described one-level denitrogenation device (5) and secondary denitrogenation device (6) carry out, dissolved oxygen controls at 0.2 ~ 0.5mg/L, and time controling is at about 2.0h; Spray tank (12) medicine liquid ingredient is tensio-active agent Sodium palmityl sulfate and stearic acid, and its mass ratio respectively accounts for half; Heavy metal catalyst composition is triphenyl phosphine rhodium carbonyl and rhodium carbonyl, and its mass ratio respectively accounts for half.
Principle of work of the present invention is: the tensio-active agent in spray tank (12) mixes completely with high-concentration ammonia nitrogenous wastewater and air under the acting in conjunction of air compressor machine (1) and high-pressure pump (2), reach in interchanger (4), spray tank (12) medicine liquid ingredient is tensio-active agent Sodium palmityl sulfate and stearic acid, under the effect of high pressure steam pump (3), steam constantly passes in interchanger (4), waste water after heating flows directly in one-level denitrogenation device (5) and secondary denitrogenation device (6) along pipeline and carries out denitrification reaction respectively, dissolved oxygen controls at 0.2 ~ 0.5mg/L, time controling is at about 2.0h, what quartz glass fibre film (8) adopted is hollow fiber film assembly, and membrane pore size is 0.1 ~ 0.2 μm, and thickness is 0.25 ~ 0.33mm, and water regain is 50 ~ 85mg/cm
2, membrane flux 12 ~ 15L/m
2h, working pressure 1.5Mpa, Fiber Distribution is even, and lines is fine and smooth, and wetting ability is strong, mineralized nitrogen in waste water after denitrogenation is that ammonia is pumped in catalytic reduction tower (7) under the effect of induced draft fan (10), under the effect of heavy metal catalyst triphenyl phosphine rhodium carbonyl, be reduced into nitrogen discharge from venting port (11), waste water is directly discharged from wastewater outlet (13).Ammonia nitrogen removal frank through the high-concentration ammonia nitrogenous wastewater of apparatus of the present invention process reaches more than 99.9%.
Significant advantage of the present invention is:
(1) the quartz glass fibre film adopted adopts hollow fiber membrane unit, and Fiber Distribution is even, and lines is fine and smooth, and wetting ability is strong;
(2) this device is simple to operate, and produce cost-saving, clearance is high, greatly alleviates the pollution to environment.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention
Wherein: 1-air compressor machine, 2-high-pressure pump, 3-high pressure steam pump, 4-interchanger, 5-one-level denitrogenation device, 6-secondary denitrogenation device, 7-catalytic reduction tank, 8-quartz glass fibre film, 9-heavy metal catalyst, 10-induced draft fan, 11-venting port, 12-spray tank, 13-wastewater outlet.
Embodiment
Below in conjunction with drawings and Examples, technical solution of the present invention is further illustrated.
As shown in Figure 1, the invention provides tensio-active agent process RE waste water middle and high concentration ammonia nitrogen device, by air compressor machine (1), high-pressure pump (2), high pressure steam pump (3), interchanger (4), one-level denitrogenation device (5), secondary denitrogenation device (6), catalytic reduction tank (7), quartz glass fibre film (8), heavy metal catalyst (9), induced draft fan (10), venting port (11), spray tank (12) and wastewater outlet (13) are formed; Air compressor machine (1), high-pressure pump (2), high pressure steam pump (3) are connected with interchanger (4), air compressor machine (1) is positioned at the top of high-pressure pump, high pressure steam pump (3) is positioned at interchanger (4) below, there is provided steam, quartz glass fibre film is positioned at one-level nitrogen rejection facility (5) and secondary nitrogen rejection facility (6) is inner; What described quartz glass fibre film (8) adopted is hollow fiber film assembly, and membrane pore size is 0.1 ~ 0.2 μm, and thickness is 0.25 ~ 0.33mm, and water regain is 50 ~ 85mg/cm
2, membrane flux 12 ~ 15L/m
2h, working pressure 1.5Mpa; The denitrification denitrogenation that described one-level denitrogenation device (5) and secondary denitrogenation device (6) carry out, dissolved oxygen controls at 0.2 ~ 0.5mg/L, and time controling is at about 2.0h; Spray tank (12) medicine liquid ingredient is tensio-active agent Sodium palmityl sulfate and stearic acid, and heavy metal catalyst composition is triphenyl phosphine rhodium carbonyl and rhodium carbonyl.
When a kind of tensio-active agent process of the present invention RE waste water middle and high concentration ammonia nitrogen device uses, tensio-active agent in spray tank (12) mixes completely with high-concentration ammonia nitrogenous wastewater and air under the acting in conjunction of air compressor machine (1) and high-pressure pump (2), reach in interchanger (4), spray tank (12) medicine liquid ingredient is tensio-active agent Sodium palmityl sulfate, under the effect of high pressure steam pump (3), steam constantly passes in interchanger (4), waste water after heating flows directly in one-level denitrogenation device (5) and secondary denitrogenation device (6) along pipeline and carries out denitrification reaction respectively, dissolved oxygen controls at 0.2 ~ 0.5mg/L, time controling is at about 2.0h, what quartz glass fibre film (8) adopted is hollow fiber film assembly, and membrane pore size is 0.1 ~ 0.2 μm, and thickness is 0.25 ~ 0.33mm, and water regain is 50 ~ 85mg/cm
2, membrane flux 12 ~ 15L/m
2h, working pressure 1.5Mpa, Fiber Distribution is even, and lines is fine and smooth, and wetting ability is strong, mineralized nitrogen in waste water after denitrogenation is that ammonia is pumped in catalytic reduction tower (7) under the effect of induced draft fan (10), under the effect of heavy metal catalyst triphenyl phosphine rhodium carbonyl and rhodium carbonyl, be reduced into nitrogen discharge from venting port (11), waste water is directly discharged from wastewater outlet (13).Ammonia nitrogen removal frank through the high-concentration ammonia nitrogenous wastewater of apparatus of the present invention process reaches more than 99.9%.
Above-described the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; under the prerequisite not departing from structure of the present invention; some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the present invention and practical applicability.
Claims (3)
1. tensio-active agent process RE waste water middle and high concentration ammonia nitrogen device, it is characterized in that: this device is by air compressor machine (1), high-pressure pump (2), high pressure steam pump (3), interchanger (4), one-level denitrogenation device (5), secondary denitrogenation device (6), catalytic reduction tank (7), quartz glass fibre film (8), heavy metal catalyst (9), and induced draft fan (10), venting port (11), spray tank (12) and wastewater outlet (13) are formed; Air compressor machine (1), high-pressure pump (2), high pressure steam pump (3) are connected with interchanger (4), air compressor machine (1) is positioned at the top of high-pressure pump, high pressure steam pump (3) is positioned at interchanger (4) below, there is provided steam, quartz glass fibre film is positioned at one-level nitrogen rejection facility (5) and secondary nitrogen rejection facility (6) is inner.
2. tensio-active agent process RE waste water middle and high concentration ammonia nitrogen device according to claim 1, it is characterized in that: what described quartz glass fibre film (8) adopted is hollow fiber film assembly, membrane pore size is 0.1 ~ 0.2 μm, thickness is 0.25 ~ 0.33mm, and water regain is 50 ~ 85mg/cm
2, membrane flux 12 ~ 15L/m
2h, working pressure 1.5Mpa.
3. tensio-active agent process RE waste water middle and high concentration ammonia nitrogen device according to claim 1, it is characterized in that: the denitrification denitrogenation that described one-level denitrogenation device (5) and secondary denitrogenation device (6) carry out, dissolved oxygen controls at 0.2 ~ 0.5mg/L, and time controling is at about 2.0h; Spray tank (12) medicine liquid ingredient is tensio-active agent Sodium palmityl sulfate and stearic acid, and its mass ratio respectively accounts for half; Heavy metal catalyst composition is triphenyl phosphine rhodium carbonyl and rhodium carbonyl, and its mass ratio respectively accounts for half.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425533.4A CN104211247A (en) | 2014-08-26 | 2014-08-26 | Device for processing high-concentration ammonia nitrogen in rare-earth wastewater by using surfactant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425533.4A CN104211247A (en) | 2014-08-26 | 2014-08-26 | Device for processing high-concentration ammonia nitrogen in rare-earth wastewater by using surfactant |
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|---|---|
| CN104211247A true CN104211247A (en) | 2014-12-17 |
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| CN201410425533.4A Pending CN104211247A (en) | 2014-08-26 | 2014-08-26 | Device for processing high-concentration ammonia nitrogen in rare-earth wastewater by using surfactant |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102772996A (en) * | 2012-07-18 | 2012-11-14 | 常州大学 | Ammonia nitrogen processing method in processing of waste gas of chemical fertilizer plant |
| CN103570196A (en) * | 2013-11-14 | 2014-02-12 | 常州大学 | Device for removing high-concentration ammonia nitrogen from oil refining wastewater by using surfactant |
-
2014
- 2014-08-26 CN CN201410425533.4A patent/CN104211247A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102772996A (en) * | 2012-07-18 | 2012-11-14 | 常州大学 | Ammonia nitrogen processing method in processing of waste gas of chemical fertilizer plant |
| CN103570196A (en) * | 2013-11-14 | 2014-02-12 | 常州大学 | Device for removing high-concentration ammonia nitrogen from oil refining wastewater by using surfactant |
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Application publication date: 20141217 |