CN105439250A - Method for degrading humic acid in water through activating persulfates by electric synergistic ferrous iron - Google Patents
Method for degrading humic acid in water through activating persulfates by electric synergistic ferrous iron Download PDFInfo
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- CN105439250A CN105439250A CN201510937936.1A CN201510937936A CN105439250A CN 105439250 A CN105439250 A CN 105439250A CN 201510937936 A CN201510937936 A CN 201510937936A CN 105439250 A CN105439250 A CN 105439250A
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
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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
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
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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
- C02F2101/34—Organic compounds containing oxygen
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention belongs to the technical field of environmental protection, and concretely relates to a method for degrading humic acid in water through activating persulfates by electric synergistic ferrous iron. The persulfates are activated by ferrous chloride to generate sulfate radical anions with extremely strong oxidizability, and the activation efficiency of the persulfates is greatly improved in a power-on mode, so humic acid in water is effectively graded. The method can be applied in underground water, and water in common drinking water factories. The method for treating humic acid in water has the advantages of simple operation, low cost, small generated pollution, small required place, realization of in situ operation, and large economy and environment benefits.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to the method that ferrous activation persulphate produces potentiometric titrations degraded organic pollutants.
Background technology
The vital task that during Organic pollutants in water, home and abroad environment is administered there is a difficult problem.Persulphate has good stability, the feature of the high and pH applied range of solubleness, its persulfate ion ionizing generation in water is a kind of very strong oxygenant, but it is more stable at normal temperatures, not obvious to organic matter degradation.At light, heat, under the conditions such as transition metal ion, persulphate can activate to decompose and produce potentiometric titrations, and the standard oxidationreduction potential of this free radical has even exceeded conventional hydroxyl radical free radical, degradable major part organism in theory.Wherein use ferrous ion Fe
2+it is simple that activation persulphate has reaction system, and the power consumption of reaction conditions gentleness is low waits remarkable advantage, but this reaction can owing to producing potentiometric titrations to Fe in reaction process
2+oxidation and Fe
2+fast to Fe
3+transformation and stop rapidly, cause effect sharply to decline.By to system energization, electric field can make Fe
3+be converted into Fe again
2+, thus make reaction be able to circulation to carry out, substantially increase the activation efficiency of persulphate, this method is simple to operate, and Be very effective is pollution-free.Have the more cold system of organic decomposition efficiency after actual use and significantly rise.
Humic acid is macromole organic pollutant common in water body, humic acid is as a kind of complexing agent of micro-metals, underwater gold can be made to belong to ion and micronutrient levels reduction, salinity declines, be unfavorable for the absorption of human body to trace element, humic acid is also the important precursor of one of halogenated by-products simultaneously, and namely modal be in the chlorination link of water factory, and it very easily forms disinfection byproduct (DBP) DBPs and haloform tires out carcinogens THMs; Water is Source of life, and the water quality of drinking water plant and the life security of the people are closely bound up, and therefore the humic acid reduced in drinking water plant water body is significant to people ' s health.Experimentally, have obvious Degradation by the collaborative ferrous activation persulphate of electricity to humic acid, and this method cost is low, simple to operate, floor space is little, does not affect normal activity in production, has extremely strong use value.
Summary of the invention
The object of the present invention is to provide a kind of simple, economic, method of processing organic pollutants efficiently.
The method of process organic pollutants provided by the invention, activates persulphate with iron protochloride, produces the extremely strong potentiometric titrations of oxidisability, and by the mode powered up, the activation efficiency of persulphate is significantly promoted, can humic acid effectively in degradation water.Range of application comprises underground water, common drinking water plant etc.
Humic acid method in the collaborative ferrous activation persulphate degradation water of electricity provided by the invention, concrete steps are:
The first step: the water body fully in stir process;
Second step: add Sodium Persulfate, add appropriate Sodium Persulfate according to the size of pollutent humic acid concentration in handled water body, humic acid and Sodium Persulfate concentration ratio should remain on more than 1:2, generally can be 1:2-1:3;
3rd step: system pH regulator, add dilute hydrochloric acid for alkaline water body and make system pH be slightly acidic, namely pH is between 6.0-6.8;
4th step: add iron protochloride, according to selected Sodium Persulfate concentration selective chlorination ferrous iron concentration, makes the mass concentration ratio of iron protochloride and Sodium Persulfate be 1:(1.8-2.5), preferred mass concentration ratio is 1:2;
5th step: the direct-flow steady voltage applying 15-30V in system, humic acid should fully be degraded more than 2h (being generally 2-3h), and period fully stirs, and ensures that solution mixes.
The present invention is based on potentiometric titrations advanced oxidation and electrochemical ultimate principle:
1. ferrous iron can activate persulphate and makes it produce potentiometric titrations, and potentiometric titrations has majority of organic pollutants in strong oxidizing property decomposable asymmetric choice net water;
2. under the effect of current field condition, iron ion is transformed ferrous ion again, and participating in activation reaction once again, makes the activation efficiency of persulphate significantly rise, also directly affects organic decomposition efficiency.
Feature of the present invention is: produce based on potentiometric titrations by ferrous iron activation persulphate, by adding the mode of this key element of electricity in systems in which, ferrous iron can be utilized at priming reaction, because had iron ion to the conversion of ferrous ion, persulphate can be sufficiently activated, produce enough potentiometric titrations with extremely strong oxidisability, most organic pollutant in energy degradation water, can not produce harmful by-products after reaction.For conventional hydroxyl radical free radical, potentiometric titrations oxidisability is stronger, and degradation of organic substances is more thorough, can be relatively simple by this method, low cost is organic pollutants and the generation potentiometric titrations of toxicological harmless is degraded, and meets the development prospect of China's organic pollutants process
The invention has the beneficial effects as follows:
The present invention works in coordination with ferrous mode with electricity and activates persulphate generation potentiometric titrations, its degradable major part humic acids organic pollutant, can be applicable to underground water, drinking water plant, plant effluent etc., this method has easy and simple to handle, and cost is low, the advantages such as toxicological harmless, have good environmental economical profit and great use value.
Embodiment
The invention is further illustrated by the following examples.
embodiment 1
Certain drinking water plant finds that in water outlet, Chlorination Disinfection By-products (DBPs) concentration is higher, further investigation reveals that to be that former water humic acid concentration is too high cause, humic acid is too high very easily produces carcinogens THMs, and tap water is directly absorbed by the body, and therefore needs the humic acid concentration at once reduced in former water.
Add the iron protochloride of 2000mg/L Sodium Persulfate and 1000mg/L, the volts DS applying 30V fully reacts 2h, the change of period interval observation humic acid concentration, analyze and find by after degraded, humic acid concentration have dropped more than 70%, in water outlet, DBPs has also returned to normal level, ensure that the safety of tap water water outlet.
embodiment 2
Certain city's underground water is contaminated, and wherein humic acid exceeds standard seriously, as important water source, this city, as do not reduced humic acid concentration in water in the short period of time, to the productive life in this city all by producing serious detrimentally affect, extremely urgent to the reparation of its water quality.
The underground water taken out first is carried out a humic acid degradation treatment, because underground water also receives other organic slight pollutions, according to overall contaminated degree, Sodium Persulfate and iron protochloride concentration are controlled respectively at about 1000mg/L and 500mg/L, the volts DS applying 30V fully reacts 2h-3h, the change of period observation humic acid concentration, analyze and find by after degraded, humic acid concentration have dropped more than 65%, can use as water source, in the short period of time, solve the problem that humic acid pollutes.
reference examples 1
Certain laboratory uses the volume 2L configured, concentration 50mg/L humic acid solution is tested, add Sodium Persulfate in systems in which until concentration arrives 1000mg/L, regulate pH to 6.0, then throwing in iron protochloride to concentration is 500mg/L, in solution, provided the stabilized voltage of 15V by TPR series multiple-channel output direct current voltage stabilized source, reaction 2h, period is fully stirred by magnetic stirrer.Through data analysis, find that the degradation rate of humic acid reaches 66.7%.
Claims (1)
1. this electricity works in coordination with the method for ferrous activation persulphate degraded humic acid, it is characterized in that concrete steps are:
The first step: the water body fully in stir process;
Second step: add Sodium Persulfate, the humic acid in water body and Sodium Persulfate concentration ratio are 1:2-1:3;
3rd step: regulation system pH, adds dilute hydrochloric acid for alkaline water body, and the system pH of making is slightly acidic, and namely pH is between 6.0-6.8;
4th step: add iron protochloride, makes the mass concentration ratio of iron protochloride and Sodium Persulfate be 1:(1.8-2.5);
5th step: the direct-flow steady voltage applying 15-30V in system, humic acid should be degraded more than 2h, and period fully stirs, and ensures that solution mixes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510937936.1A CN105439250A (en) | 2015-12-16 | 2015-12-16 | Method for degrading humic acid in water through activating persulfates by electric synergistic ferrous iron |
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| CN201510937936.1A CN105439250A (en) | 2015-12-16 | 2015-12-16 | Method for degrading humic acid in water through activating persulfates by electric synergistic ferrous iron |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113528223A (en) * | 2021-08-12 | 2021-10-22 | 陕西喜盛石油化工有限公司 | Antiwear hydraulic oil and production process thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525177A (en) * | 2008-12-16 | 2009-09-09 | 中国海洋大学 | Method of using active persulphate for processing difficult-biodegradability organic waste water |
| CN101774678A (en) * | 2010-02-24 | 2010-07-14 | 浙江省农业科学院 | Treatment method of garbage percolate |
| CN101973622A (en) * | 2010-10-19 | 2011-02-16 | 哈尔滨工业大学 | Method for accelerating monopersulfate and persulfate to produce free sulfate radicals |
| CN102249378A (en) * | 2011-07-19 | 2011-11-23 | 武汉大学 | Method for treating organic waste water by using electrochemistry under assistance of persulfate |
| CN102259993A (en) * | 2011-06-27 | 2011-11-30 | 华南理工大学 | Water treatment method utilizing complex-ferrous-activated persulfate oxidation |
| CN102311191A (en) * | 2011-06-03 | 2012-01-11 | 大连海事大学 | Method for pre-degrading high-concentration oil refining organic wastewater by synergism of sulfuric acid free radical and anodic oxidation |
| EP2500323A8 (en) * | 2011-03-14 | 2013-02-27 | E' Cosi' S.R.L. | Method for the degradation of industrial wastewater and apparatus for performing the method |
| CN104743651A (en) * | 2013-12-27 | 2015-07-01 | 湖南大学 | Free radical-promoted catalysis wet-type oxydative degradation method for humic acid pollutant |
| CN104787853A (en) * | 2015-03-31 | 2015-07-22 | 武汉大学 | Electrochemical method cooperated with active carbon for activating persulfate for treating organic wastewater |
-
2015
- 2015-12-16 CN CN201510937936.1A patent/CN105439250A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525177A (en) * | 2008-12-16 | 2009-09-09 | 中国海洋大学 | Method of using active persulphate for processing difficult-biodegradability organic waste water |
| CN101774678A (en) * | 2010-02-24 | 2010-07-14 | 浙江省农业科学院 | Treatment method of garbage percolate |
| CN101973622A (en) * | 2010-10-19 | 2011-02-16 | 哈尔滨工业大学 | Method for accelerating monopersulfate and persulfate to produce free sulfate radicals |
| EP2500323A8 (en) * | 2011-03-14 | 2013-02-27 | E' Cosi' S.R.L. | Method for the degradation of industrial wastewater and apparatus for performing the method |
| CN102311191A (en) * | 2011-06-03 | 2012-01-11 | 大连海事大学 | Method for pre-degrading high-concentration oil refining organic wastewater by synergism of sulfuric acid free radical and anodic oxidation |
| CN102259993A (en) * | 2011-06-27 | 2011-11-30 | 华南理工大学 | Water treatment method utilizing complex-ferrous-activated persulfate oxidation |
| CN102249378A (en) * | 2011-07-19 | 2011-11-23 | 武汉大学 | Method for treating organic waste water by using electrochemistry under assistance of persulfate |
| CN104743651A (en) * | 2013-12-27 | 2015-07-01 | 湖南大学 | Free radical-promoted catalysis wet-type oxydative degradation method for humic acid pollutant |
| CN104787853A (en) * | 2015-03-31 | 2015-07-22 | 武汉大学 | Electrochemical method cooperated with active carbon for activating persulfate for treating organic wastewater |
Non-Patent Citations (1)
| Title |
|---|
| HUI ZHANG ET AL.: "Removal of COD from landfill leachate by an electro/Fe2+/peroxydisulfate process", 《CHEMICAL ENGINEERING JOURNAL》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113528223A (en) * | 2021-08-12 | 2021-10-22 | 陕西喜盛石油化工有限公司 | Antiwear hydraulic oil and production process thereof |
| CN113528223B (en) * | 2021-08-12 | 2023-09-19 | 陕西喜盛石油化工有限公司 | Antiwear hydraulic oil and production process thereof |
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Application publication date: 20160330 |