CN106904727A - Method and the application in water-supply systems that Fenton-type reagent is degraded to tetrachloro-ethylene are constituted based on growth ring and hydrogen peroxide - Google Patents
Method and the application in water-supply systems that Fenton-type reagent is degraded to tetrachloro-ethylene are constituted based on growth ring and hydrogen peroxide Download PDFInfo
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- CN106904727A CN106904727A CN201710254102.XA CN201710254102A CN106904727A CN 106904727 A CN106904727 A CN 106904727A CN 201710254102 A CN201710254102 A CN 201710254102A CN 106904727 A CN106904727 A CN 106904727A
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- 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
- C02F1/722—Oxidation by peroxides
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- 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
- C02F2101/36—Organic compounds containing halogen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/14—Treatment of water in water supply networks, e.g. to prevent bacterial growth
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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- Treatment Of Water By Oxidation Or Reduction (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Method and the application in water-supply systems that Fenton-type reagent is degraded to tetrachloro-ethylene are constituted based on growth ring and hydrogen peroxide, the methods and applications that the Fenton-type reagent that water supply network growth ring and hydrogen peroxide constitute is degraded to tetrachloro-ethylene are the present invention relates to the use of, it will solve the problems, such as the method for tetrachloro-ethylene in existing removal drinking water, and to there is expense higher, high to equipment requirement.Biodegrading process is that growth ring and H are added in the raw water containing tetrachloro-ethylene2O2, Fenton-type reagent, the tetrachloro-ethylene that reaction is gone in water removal are generated in water treatment procedure.Using being to add H in the clear water reserviors of urban water supply factory2O2, the H in water2O2With the growth ring reaction generation Fenton-type reagent in water supply network, the tetrachloro-ethylene in going to remove water with watering cycle.The hydroxyl radical free radical that growth ring Fenton-type reagent of the present invention is produced is higher to the clearance of tetrachloro-ethylene, to growth ring twice laid, only need to add H2O2, equipment requirement is simple.
Description
Technical field
A kind of Fenton-type reagent the present invention relates to utilization water supply network growth ring and hydrogen peroxide composition is to tetrachloro-ethylene
(PCE) methods and applications degraded.
Background technology
Tetrachloro-ethylene (PCE) is a kind of important organic chlorides, with strong solvability, is mainly used as the dry of fabric
Lotion, also serves as degreasing detergent, drier, paint stripper, pest repellant and common solvent, organic synthesis intermediate of metal etc..
Due to production, using, storage or some reasons such as mishandling, be passed to volatilize, reveal, discharge of wastewater, Pesticide use and
The approach such as the burning of chlorinated organics finished product enter turns into one of main source of environmental pollution in air, soil, underground water.Four
Vinyl chloride can invade human body by respiratory tract and skin, cause miscarriage infertile and high.The tetrachloro-ethylene steam pair of Low Level Exposure
Skin and mucosa, eye, respiratory tract have a stimulation, and long-term low dose suction can cause human nerve endocrine and immune system
Dysfunction；High concentration then causes central nervous system impression, hepatic and renal function to damage, and causes dizzy, nauseous, headache and mind not
Clearly, severe patient lethal can be died.Tetrachloro-ethylene can also have an impact to contactee's glycometabolism and lipid metaboli.
In order to solve this problem, the method for many degraded tetrachloro-ethylenes is gradually developed, such as：Physical method, it is excellent
Point can be fast and effeciently to remove pollutant, can be as effectively removal tetrachloro-ethylene urgent technique, but adsorbent
Activated carbon is expensive, is not suitable for pollution in wide area reparation, and Physical can be such that tetrachloro-ethylene is transferred to separately from a place
One place, it is impossible to make it become harmless products completely.
In addition, chemical method can constantly destroy pollutant with oxidants such as permanganate, ozone, change the knot of pollutant
Structure, it is thoroughly removed from environment, but some converted products of tetrachloro-ethylene may be more stronger than the toxicity of parent；Microorganism
Can degrade and destroy the molecular structure of pollutant, it is eventually converted into nontoxic stable material, but biological method is also deposited
In drawbacks such as repair time strain environmental suitability differences long and additional.It is poor, high to equipment requirement, no to there is security in the above method
The problems such as easy to operate, operating cost is high, repair time is long.Therefore urgently need a kind of safe, reasonable, environmentally friendly, economical, effective
Tetrachloro-ethylene in method removal drinking water, it is ensured that the health and living environment of people.
The content of the invention
Method the invention aims to solve tetrachloro-ethylene in existing removal drinking water has that expense is higher, security
Difference, the problem high to equipment requirement, and propose a kind of Fenton-type reagent constituted based on water supply network growth ring and hydrogen peroxide
To remove the methods and applications of tetrachloro-ethylene in drinking water.
The present invention is to contain to the method that tetrachloro-ethylene is degraded based on the Fenton-type reagent that growth ring and hydrogen peroxide are constituted
Have and add growth ring in the raw water of tetrachloro-ethylene and H that mass concentration is 3%~10%2O2, class is generated in water treatment procedure fragrant
Pause reagent, is reacted, so as to remove the tetrachloro-ethylene in water removal.
The method that Fenton-type reagent of the present invention based on growth ring and hydrogen peroxide composition is degraded to tetrachloro-ethylene is in city
Application in water system is to add H in the clear water reserviors of urban water supply factory2O2, the H for adding2O2Mass concentration for 3%~
10%, the H in water2O2With the growth ring reaction generation Fenton-type reagent in water supply network, the tetrachloro in going to remove water with watering cycle
Ethene.
Growth ring is existing material in water supply network in the present invention, and material is cheap and easily-available, H2O2It is with low cost；Growth
Ring and H2O2The Fenton-like of composition can effectively remove tetrachloro-ethylene in drinking water, and tetrachloro-ethylene can by permineralization,
Enhance drinking water safety.
Used H in the present invention2O2It is colourless transparent liquid, is a kind of strong oxidizer, H2O2Itself can not burn, but
The oxygen released during decomposition can be strong combustion-supporting.It can produce the oxygen of significant volume when decomposing, decomposition out of control can cause the pressure of equipment
Power explosion, therefore H in the present invention2O2The concentration reached after adding need to be controlled rationally.
H2O2Purity is higher, and stability is better, but more sensitive to the impurity of presence；In low strength range, H2O2It is harmless
, the aqueous solution of such as mass concentration less than 3% can be used for oral disinfecting.H2O2Reacted with growth ring for a long time in pipe network, drink
H when reaching user with water2O2Concentration is relatively low, harmless.And water and oxygen can be resolved into general, but decompose speed
Degree is extremely slow.H2O2Transport is without danger, it is easy to produce, cheap.
The method of the Fenton-like degraded tetrachloro-ethylene that pipe network growth ring of the present invention and hydrogen peroxide are constituted is comprising following
Beneficial effect：
1st, the hydroxyl radical free radical that growth ring-Fenton-type reagent is produced is higher to the clearance of tetrachloro-ethylene, through 8h water process
Reaction (watering cycle), degradation rate reaches more than 65%；
2nd, tetrachloro-ethylene almost permineralization, poisonous product is not produced, greatly strengthen the safety guarantee of drinking water；
3、H2O2Cheap and easy to get with growth ring, in addition growth ring plays catalyst in Fenton-like, can be with
Twice laid, the later stage need to only add H2O2；Equipment requirement is simple, and energy loss is low, saves input and operating cost.
Specific embodiment
Specific embodiment one：Present embodiment is based on the Fenton-type reagent of growth ring and hydrogen peroxide composition to four chloroethenes
The method of alkene degraded is growth ring to be added in the raw water containing tetrachloro-ethylene and H that mass concentration is 3%~10%2O2, in water
Fenton-type reagent is generated in processing procedure, is reacted, so as to remove the tetrachloro-ethylene in water removal.
The reaction mechanism of the class Fenton's reaction described in present embodiment is as follows：
Fe2++H2O2→Fe3++OH-+OH- (1)
Fe3++H2O2→HO2 -+Fe2++H+ (2)
OH-+Fe2+→Fe3++OH- (3)
Fe3++HO2 -→Fe2++O2+H+ (4)
OH-+H2O2→H2O+HO2 - (5)
From formula (5), ferrous ion catalyzing hydrogen peroxide forms hydroxyl radical free radical, and ferrous iron is oxidized to trivalent
Iron.Ferric ion generates ferrous ion with hydroperoxidation, and reaction cycle is carried out.In city water-supply pipe network, without
Other catalyst are added, and without harmful accessory substance.
Specific embodiment two：Present embodiment and H unlike specific embodiment one2O2Mass concentration for 5%~
10%.
Specific embodiment three：Present embodiment and H unlike specific embodiment two2O2Mass concentration be 10%.
Specific embodiment four：Containing four chloroethenes unlike one of present embodiment and specific embodiment one to three
Growth ring is added in the raw water of alkene and H that mass concentration is 3%~10%2O2, wherein growth ring and mass concentration be 3%~
10% H2O2Mass ratio be (1~4)：(3~10).
Specific embodiment five：Present embodiment is based on the Fenton-type reagent of growth ring and hydrogen peroxide composition to four chloroethenes
Application of the method for alkene degraded in water-supply systems is to add H in the clear water reserviors of urban water supply factory2O2, the H for adding2O2
Mass concentration be 3%~10%, the H in water2O2Fenton-type reagent is generated with the growth ring reaction in water supply network, with water supply
The tetrachloro-ethylene that circulation is gone in water removal.
Specific embodiment six：Present embodiment is added from every liter of water in clear water reserviors unlike specific embodiment five
50~150mL mass concentrations are 3%~10% H2O2。
Specific embodiment seven：Present embodiment is added from every liter of water in clear water reserviors unlike specific embodiment six
80~120mL mass concentrations are 3%~10% H2O2。
Specific embodiment eight：With watering cycle 6 unlike one of present embodiment and specific embodiment five to seven
The tetrachloro-ethylene that~20h is gone in water removal.
Specific embodiment nine：Present embodiment is removed from unlike specific embodiment eight with 8~15h of watering cycle
Tetrachloro-ethylene in water.
Embodiment 1：The present embodiment adds 10 μ L tetrachloro-ethylenes as raw water in 50mL water, to addition 5ml matter in raw water
Amount concentration is 3% hydrogenperoxide steam generator and 0.1g growth rings, the H in water2O2With growth ring reaction generation Fenton-type reagent, 8 is small
When after detect water in tetrachloro-ethylene.
PCE concentration is reduced to 45.79mg/L by 205.31mg/L in the present embodiment water, and degradation rate is about 77.61%.
Embodiment 2：The present embodiment adds 10 μ L tetrachloro-ethylenes as raw water in 50mL water, to addition 5ml matter in raw water
Amount concentration is 5% hydrogenperoxide steam generator and 0.4g growth rings, the H in water2O2With growth ring reaction generation Fenton-type reagent, 8 is small
When after detect water in tetrachloro-ethylene.
PCE concentration is reduced to 41.22mg/L by 199.21mg/L in the present embodiment water, and degradation rate is about 79.31%.
Embodiment 3：The present embodiment adds 10 μ L tetrachloro-ethylenes as raw water in 50mL water, to addition 10ml matter in raw water
Amount concentration is 5% hydrogenperoxide steam generator and 0.1g growth rings, the H in water2O2With growth ring reaction generation Fenton-type reagent, 8 is small
When after detect water in tetrachloro-ethylene.
PCE concentration is reduced to 71.98mg/L by 207.75mg/L in the present embodiment water, and degradation rate is about 65.35%.
Embodiment 4：The present embodiment adds 10 μ L tetrachloro-ethylenes as raw water in 50mL water, to addition 15ml matter in raw water
Amount concentration is 5% hydrogenperoxide steam generator and 0.2g growth rings, the H in water2O2With growth ring reaction generation Fenton-type reagent, 8 is small
When after detect water in tetrachloro-ethylene.
PCE concentration is reduced to 23.67mg/L by 209.36mg/L in the present embodiment water, and degradation rate is about 88.69%.
Embodiment 5：The present embodiment adds 10 μ L tetrachloro-ethylenes as raw water in 50mL water, to addition 10ml matter in raw water
Amount concentration is 10% hydrogenperoxide steam generator and 0.4g growth rings, the H in water2O2With growth ring reaction generation Fenton-type reagent, 8
The tetrachloro-ethylene in water is detected after hour.
PCE concentration is reduced to 40.04mg/L by 203.65mg/L in the present embodiment water, and degradation rate is about 88.34%.
Claims (9)
1. the method that the Fenton-type reagent for being constituted based on growth ring and hydrogen peroxide is degraded to tetrachloro-ethylene, it is characterised in that the party
Method is growth ring to be added in the raw water containing tetrachloro-ethylene and H that mass concentration is 3%~10%2O2, in water treatment procedure
Generation Fenton-type reagent, is reacted, so as to remove the tetrachloro-ethylene in water removal.
2. the Fenton-type reagent constituted based on growth ring and hydrogen peroxide according to claim 1 is degraded to tetrachloro-ethylene
Method, it is characterised in that H2O2Mass concentration be 5%~10%.
3. the Fenton-type reagent constituted based on growth ring and hydrogen peroxide according to claim 2 is degraded to tetrachloro-ethylene
Method, it is characterised in that H2O2Mass concentration be 10%.
4. the Fenton-type reagent constituted based on growth ring and hydrogen peroxide according to claim 1 is degraded to tetrachloro-ethylene
Method, it is characterised in that growth ring is added in the raw water containing tetrachloro-ethylene and H that mass concentration is 3%~10%2O2, its
Middle growth ring and mass concentration are 3%~10% H2O2Mass ratio be (1~4)：(3~10).
5. the method that the Fenton-type reagent for being constituted based on growth ring and hydrogen peroxide is degraded to tetrachloro-ethylene is in water-supply systems
In application, it is characterised in that the application is to add H in the clear water reserviors of urban water supply factory2O2, the H for adding2O2Mass concentration
It is 3%~10%, the H in water2O2Growth ring reaction generation Fenton-type reagent with water supply network, water removal is gone with watering cycle
In tetrachloro-ethylene.
6. the Fenton-type reagent constituted based on growth ring and hydrogen peroxide according to claim 5 is degraded to tetrachloro-ethylene
Application of the method in water-supply systems, it is characterised in that addition 50~150mL mass concentrations are in every liter of water in clear water reserviors
3%~10% H2O2。
7. the Fenton-type reagent constituted based on growth ring and hydrogen peroxide according to claim 6 is degraded to tetrachloro-ethylene
Application of the method in water-supply systems, it is characterised in that addition 80~120mL mass concentrations are in every liter of water in clear water reserviors
3%~10% H2O2。
8. the Fenton-type reagent constituted based on growth ring and hydrogen peroxide according to claim 5 is degraded to tetrachloro-ethylene
Application of the method in water-supply systems, it is characterised in that with the tetrachloro-ethylene that 6~20h of watering cycle is gone in water removal.
9. the Fenton-type reagent constituted based on growth ring and hydrogen peroxide according to claim 8 is degraded to tetrachloro-ethylene
Application of the method in water-supply systems, it is characterised in that with the tetrachloro-ethylene that 8~15h of watering cycle is gone in water removal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710254102.XA CN106904727A (en) | 2017-04-18 | 2017-04-18 | Method and the application in water-supply systems that Fenton-type reagent is degraded to tetrachloro-ethylene are constituted based on growth ring and hydrogen peroxide |
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| CN201710254102.XA CN106904727A (en) | 2017-04-18 | 2017-04-18 | Method and the application in water-supply systems that Fenton-type reagent is degraded to tetrachloro-ethylene are constituted based on growth ring and hydrogen peroxide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109851028A (en) * | 2019-01-31 | 2019-06-07 | 同济大学 | The minimizing technology of chloride in a kind of water |
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| CN104944538A (en) * | 2015-07-08 | 2015-09-30 | 哈尔滨工业大学 | Pseudomonas aeruginosa and sphingomonas paucimobilis inactivating method based on water supply network growth ring |
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Patent Citations (2)
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| CN104944567A (en) * | 2015-07-08 | 2015-09-30 | 哈尔滨工业大学 | Fenton-like reagent and chlorine combined disinfection method |
| CN104944538A (en) * | 2015-07-08 | 2015-09-30 | 哈尔滨工业大学 | Pseudomonas aeruginosa and sphingomonas paucimobilis inactivating method based on water supply network growth ring |
Non-Patent Citations (1)
| Title |
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| 王自强: "类Fenton体系灭活与降解供水管网中耐氯菌及TCE的效能研究", 《中国优秀硕士学位论文全文数据库工程科技II辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109851028A (en) * | 2019-01-31 | 2019-06-07 | 同济大学 | The minimizing technology of chloride in a kind of water |
| CN109851028B (en) * | 2019-01-31 | 2020-08-28 | 同济大学 | Method for removing chloride in water |
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Application publication date: 20170630 |