CN110304682A - A kind of method of photocatalysis treatment mature landfill leachate under sunlight - Google Patents
A kind of method of photocatalysis treatment mature landfill leachate under sunlight Download PDFInfo
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- CN110304682A CN110304682A CN201910545374.4A CN201910545374A CN110304682A CN 110304682 A CN110304682 A CN 110304682A CN 201910545374 A CN201910545374 A CN 201910545374A CN 110304682 A CN110304682 A CN 110304682A
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- landfill leachate
- tio
- hydro
- sunlight
- mature landfill
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- 239000000149 chemical water pollutant Substances 0.000 title claims abstract description 22
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 20
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000003054 catalyst Substances 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 5
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 5
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 229910001868 water Inorganic materials 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 8
- 229910003206 NH4VO3 Inorganic materials 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- 235000019441 ethanol Nutrition 0.000 claims description 6
- 239000012467 final product Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 5
- 239000012498 ultrapure water Substances 0.000 claims description 5
- 238000003760 magnetic stirring Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 239000003643 water by type Substances 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011941 photocatalyst Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical group [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract description 2
- 229910010413 TiO 2 Inorganic materials 0.000 abstract 1
- 238000013019 agitation Methods 0.000 abstract 1
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 abstract 1
- 238000001027 hydrothermal synthesis Methods 0.000 abstract 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 abstract 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 abstract 1
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 abstract 1
- 239000002243 precursor Substances 0.000 abstract 1
- 229910000348 titanium sulfate Inorganic materials 0.000 abstract 1
- 239000010936 titanium Substances 0.000 description 6
- 239000004408 titanium dioxide Substances 0.000 description 5
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 238000011953 bioanalysis Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011026 diafiltration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
-
- B01J35/39—
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
The invention discloses a kind of methods of photocatalysis treatment mature landfill leachate under sunlight.Mature landfill leachate is added in photochemical catalyst, under the action of magnetic agitation and sunlight, photocatalysis oxidation reaction is carried out, so that mature landfill leachate be enable to handle.Wherein the preparation of the photochemical catalyst uses secondary hydro-thermal method, and using titanium sulfate as nano-TiO 2 precursor, ammonium metavanadate is vanadium source, and triethanolamine is nitrogen source, and codope obtains modified titanium dioxide photocatalyst, i.e. V-N-TiO2.The present invention can use the mature landfill leachate that sunlight carries out Treatment by Photocatalysis Oxidation biodegradability difference, and simple and easy, economical and effective, secondary pollution is small.
Description
Technical field
The invention belongs to environmental protection and photocatalysis technology field, in particular to photocatalysis treatment old-age group rubbish under a kind of sunlight
The method of percolate.
Background technique
Bioanalysis is presently the most universal method for treating garbage percolation liquid.However, with the extension of landfill time, diafiltration
Biodegradable organic content gradually decreases in liquid, and refractory organic content accumulation, pollutant concentration is unable to get
It further decreases.
Photochemical catalytic oxidation is that the process of photochemical degradating is carried out under conditions of having catalyst, has strong oxidizing property, reaction
Speed is fast, without secondary pollution and the advantages such as can react at normal temperatures and pressures, it is considered to be the environmental protection with good development prospect is new
Technology.By photocatalytic oxidation, hardly degraded organic substance is degraded to CO under the action of strong oxidizing property free radical in percolate2
And H2O, the small molecules such as inorganic salts and inorganic acid.
Catalyst is the most crucial part of photocatalysis oxidation reaction, and titanium dioxide photocatalysis nontoxic with its, cheap, high is living
Property, chemical property stablizes etc. and to cause the interest of vast researcher.But due to titanium dioxide greater band gap, lead to it only
The ultraviolet light in sunlight can be absorbed and utilized, and ultraviolet light only accounts for the 4%-5% of sunlight, therefore, causes titanium dioxide to the sun
The utilization rate of light is extremely low.
Summary of the invention
The object of the present invention is to provide a kind of methods of photocatalysis treatment mature landfill leachate under sunlight.
Thinking of the invention: mature landfill leachate becomes the features such as complicated component and fills out at present since its biodegradability is poor
Bury a great problem of field management.Photocatalytic oxidation is considered as environment protection novel at present with good development prospect, can be with
The various hard-degraded substances of efficient degradation；However photochemical catalyst of the titanium dioxide as presently the most Cheap highly effective, due to its own
Defect, it is extremely low for the utilization rate of sunlight.The method of the present invention is made by secondary hydro-thermal codope vanadium, nitrogen modifying titanium dioxide
It can handle mature landfill leachate under sunlight, reach economical and efficient processing bioanalysis and be difficult to the aged garbage filter degraded
Liquid.
Specific steps are as follows:
(1) by Ti (SO4)2With quantitative NH4VO3It dissolves in 70 mL ultrapure waters and is uniformly mixed, obtain mixed solution, wherein Ti
(SO4)2Concentration be 1 mol L-1, NH4VO3With Ti (SO4)2Molecule content ratio be 0.2 ~ 1%, then mixed solution is moved to
It in the reaction kettle of polytetrafluoroethyllining lining, and strictly seals, the rear 100 DEG C of hydro-thermals of baking oven that are placed in keep 20 h, naturally cool to room
Wen Hou, gained hydro-thermal sample is centrifuged 5 min through the revolving speed of 8000 r/min, and is respectively washed 4 ~ 6 in turn with ultrapure water and ethyl alcohol
After secondary, in 70 DEG C of dry 8 h, a hydro-thermal final product, the modified TiO of V is made2, i.e. V-TiO2。
(2) V-TiO made from 1.5 g steps (1) is taken2It is mixed into 70 mL triethanolamine solutions, stirs, ultrasonic vibration 15
Min is made mixed liquor, then moves in polytetrafluoroethyllining lining reaction kettle mixed liquor and strictly seal, and is placed in baking oven in 180 DEG C
React 22 h, after cooled to room temperature, gained hydro-thermal sample is centrifuged 5 min through the revolving speed of 8000 r/min, and uses ultrapure water
After being respectively washed 4 ~ 6 times in turn with ethyl alcohol, in 70 DEG C of dry 6 h, secondary hydro-thermal final product, V, N is made in 180 DEG C of 10 h of drying
Modified TiO2, i.e. photochemical catalyst V-N-TiO2。
(3) mature landfill leachate enters reactive agent by top water inlet, by photochemical catalyst V-N- made from step (2)
TiO2It puts into mature landfill leachate, 1 ~ 4 h of reaction is carried out under sunlight, while carrying out by rotor and magnetic stirring apparatus
Stirring, carries out staticly settling 0.5 ~ 1 h after the reaction was completed, flow out through bottom water outlet, i.e. photocatalysis treatment under realization sunlight
Mature landfill leachate.
The advantages of the method for the present invention: the present invention handles mature landfill leachate, economical and effective, behaviour using sunlight photocatalysis
Make simple, convenient for management, reduces photocatalysis operation cost, make the aged rubbish of photocatalysis treatment biodegradability difference under sunlight
Percolate is achieved；Turn of hardly degraded organic substance in mature landfill leachate is realized by photochemical catalytic oxidation under sunlight
Change, and it is non-diverting.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of equipment therefor in the embodiment of the present invention.
Marked in the figure: 1- water inlet；2- reactive agent；3- rotor；4- magnetic stirring apparatus；5- water outlet.
Specific embodiment
Embodiment
(1) by 1 mol L-1Ti (SO4)2With quantitative NH4VO3(NH4VO3Same Ti (SO4)2Molecule content than difference
0.2%, 0.5% and 1%) to dissolve in 70 ml ultrapure waters and being uniformly mixed, mixed solution is obtained.Then mixed solution is moved to poly-
It in the reaction kettle of tetrafluoroethene liner, and strictly seals, the rear 100 DEG C of hydro-thermals of baking oven that are placed in keep 20 h.Cooled to room temperature
Afterwards, gained hydro-thermal sample is centrifuged (8000 r/min, 5 min), and after being cleaned for several times in turn with ultrapure water and ethyl alcohol, in 70 DEG C
Dry 8 h obtain a hydro-thermal final product, the modified TiO of V2(V-TiO2).
(2) 1.5 g step (1) described V-TiO are taken2It is mixed into 70 mL triethanolamine solutions, strong to stir, ultrasonic vibration
15 min, are mixed sample sufficiently.Then mixed solution is moved in polytetrafluoroethyllining lining reaction kettle and is strictly sealed, merging is dried
Case is in 180 DEG C of 22 h of reaction.After cooled to room temperature, gained hydro-thermal sample is centrifuged (8000r/min, 5min), and with super
After pure water and ethyl alcohol clean for several times in turn, in 70 DEG C of dry 6 h, 180 DEG C of 10 h of drying obtain secondary hydro-thermal final product, V, N
Modified TiO2(V-N-TiO2).
(3) so far, the present embodiment used photocatalysis agent (V-N-TiO is completed2) preparation.
2. photocatalysis treatment mature landfill leachate under sunlight, comprising the following steps: mature landfill leachate is by top
Water inlet 1 enters reactive agent, by NH4VO3Same Ti (SO4)2Molecule content it is more aged than the photochemical catalyst investment being prepared into for 1%
Landfill leachate carries out light-catalyzed reaction under sunlight, while being stirred by rotor 3 and magnetic stirring apparatus 4, has reacted
It is staticly settled after, is flowed out through bottom water outlet 5.
In the present embodiment, the reaction time is 4 h, 1h is stood, until treated percolate and photocatalyst separation；Each time
Section ammonia nitrogen, COD concentration situation of change are as shown in table 1.When being 1 h between when reacted, the removal rate of ammonia nitrogen and COD are respectively
78.53% and 45.40%, water outlet percolate concentration is respectively 12.3 mg/L and 95 mg/L, can meet " household refuse landfill sites
Contamination control standard " emission request.Illustrate that the present invention may be implemented quickly and effectively to handle mature landfill leachate under sunlight.
1 ammonia nitrogen of table, COD concentration with the light-catalyzed reaction time variation
| Reaction time (min) | Ammonia nitrogen (mg/L) | COD (mg/L) |
| 0 | 57.3 | 174 |
| 20 | 31.0 | 128 |
| 40 | 19.3 | 101 |
| 60 | 12.3 | 95 |
| 120 | 10.4 | 90 |
| 240 | 10.2 | 78 |
Claims (1)
1. a kind of method of photocatalysis treatment mature landfill leachate under sunlight, it is characterised in that specific steps are as follows:
(1) by Ti (SO4)2With quantitative NH4VO3It dissolves in 70 mL ultrapure waters and is uniformly mixed, obtain mixed solution, wherein Ti
(SO4)2Concentration be 1 mol L-1, NH4VO3With Ti (SO4)2Molecule content ratio be 0.2 ~ 1%, then mixed solution is moved to
It in the reaction kettle of polytetrafluoroethyllining lining, and strictly seals, the rear 100 DEG C of hydro-thermals of baking oven that are placed in keep 20 h, naturally cool to room
Wen Hou, gained hydro-thermal sample is centrifuged 5 min through the revolving speed of 8000 r/min, and is respectively washed 4 ~ 6 in turn with ultrapure water and ethyl alcohol
After secondary, in 70 DEG C of dry 8 h, a hydro-thermal final product, the modified TiO of V is made2, i.e. V-TiO2；
(2) V-TiO made from 1.5 g steps (1) is taken2It is mixed into 70 mL triethanolamine solutions, stirs, 15 min of ultrasonic vibration,
Mixed liquor is made, then mixed liquor is moved in polytetrafluoroethyllining lining reaction kettle and is strictly sealed, merging baking oven is reacted in 180 DEG C
22 h, after cooled to room temperature, gained hydro-thermal sample is centrifuged 5 min through the revolving speed of 8000 r/min, and with ultrapure water and second
After alcohol is respectively washed 4 ~ 6 times in turn, in 70 DEG C of dry 6 h, 180 DEG C of 10 h of drying, secondary hydro-thermal final product is made, V, N are modified
TiO2, i.e. photochemical catalyst V-N-TiO2；
(3) mature landfill leachate enters reactive agent by top water inlet, by photochemical catalyst V-N-TiO made from step (2)2
It puts into mature landfill leachate, 1 ~ 4 h of reaction is carried out under sunlight, while being stirred by rotor and magnetic stirring apparatus
It mixes, carries out staticly settling 0.5 ~ 1 h after the reaction was completed, be flowed out through bottom water outlet, i.e., photocatalysis treatment is old under realization sunlight
Age landfill leachate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910545374.4A CN110304682A (en) | 2019-06-22 | 2019-06-22 | A kind of method of photocatalysis treatment mature landfill leachate under sunlight |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910545374.4A CN110304682A (en) | 2019-06-22 | 2019-06-22 | A kind of method of photocatalysis treatment mature landfill leachate under sunlight |
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| CN110304682A true CN110304682A (en) | 2019-10-08 |
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ID=68076128
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| CN201910545374.4A Pending CN110304682A (en) | 2019-06-22 | 2019-06-22 | A kind of method of photocatalysis treatment mature landfill leachate under sunlight |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112266043A (en) * | 2020-08-27 | 2021-01-26 | 桂林理工大学 | Method for treating aged landfill leachate through nano titanium dioxide photocatalysis |
| CN113193177A (en) * | 2021-01-22 | 2021-07-30 | 渤海大学 | Preparation method and application of xanthium-shaped nano composite electrode material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774926A (en) * | 2012-07-06 | 2012-11-14 | 华南理工大学 | Advanced oxidation treatment method for landfill leachate |
| US20150174557A1 (en) * | 2013-12-24 | 2015-06-25 | Denso Corporation | Purification catalyst |
| CN109289887A (en) * | 2018-09-06 | 2019-02-01 | 南京大学 | A kind of nitrogen, vanadium codope titanium dioxide/bismuth tantalate Z-type heterojunction photocatalyst preparation method and application |
-
2019
- 2019-06-22 CN CN201910545374.4A patent/CN110304682A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774926A (en) * | 2012-07-06 | 2012-11-14 | 华南理工大学 | Advanced oxidation treatment method for landfill leachate |
| US20150174557A1 (en) * | 2013-12-24 | 2015-06-25 | Denso Corporation | Purification catalyst |
| CN109289887A (en) * | 2018-09-06 | 2019-02-01 | 南京大学 | A kind of nitrogen, vanadium codope titanium dioxide/bismuth tantalate Z-type heterojunction photocatalyst preparation method and application |
Non-Patent Citations (2)
| Title |
|---|
| LIU JINWEN ET AL.: "Enhanced Photoactivity of V-N Codoped TiO2 Derived from a Two-Step Hydrothermal Procedure for the Degradation of PCP-Na under Visible Light Irradiation", 《THE JOURNAL OF PHYSICAL CHEMISTRY》 * |
| 何俊旗等: "TiO2光催化降解垃圾渗滤液中污染物质的实验研究", 《中国资源综合利用》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112266043A (en) * | 2020-08-27 | 2021-01-26 | 桂林理工大学 | Method for treating aged landfill leachate through nano titanium dioxide photocatalysis |
| CN113193177A (en) * | 2021-01-22 | 2021-07-30 | 渤海大学 | Preparation method and application of xanthium-shaped nano composite electrode material |
| CN113193177B (en) * | 2021-01-22 | 2022-11-15 | 渤海大学 | Preparation method and application of xanthium-shaped nano composite electrode material |
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Application publication date: 20191008 |