CN108946908B - Water treatment method for removing micropollutants by activating persulfate - Google Patents
Water treatment method for removing micropollutants by activating persulfate Download PDFInfo
- Publication number
- CN108946908B CN108946908B CN201810805160.1A CN201810805160A CN108946908B CN 108946908 B CN108946908 B CN 108946908B CN 201810805160 A CN201810805160 A CN 201810805160A CN 108946908 B CN108946908 B CN 108946908B
- Authority
- CN
- China
- Prior art keywords
- pollutants
- sulfate
- micro
- water
- water body
- 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.)
- Active
Links
Images
Classifications
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention provides a water treatment method for removing micropollutants by activating persulfate, which comprises the following steps: adding chloride or sulfate into a water body containing the micro-pollutants, fully mixing, then adding zero-valent iron powder into the water body, then adding persulfate into the water body, stirring and fully mixing to remove the micro-pollutants in the water body. The water treatment method of the invention utilizes the chloride or sulfate to improve the adsorption of the micro-pollutants on the surfaces of iron and iron oxides and promote the direct oxidation of the micro-pollutants by free radicals generated by activating persulfate on the surfaces of the iron and iron oxides by zero-valent iron, and the purpose of promoting the activation of the persulfate by the zero-valent iron and rapidly and thoroughly removing the pollutants can be achieved by only adopting common chloride or sulfate, thereby solving the problem of low activation rate of the existing persulfate.
Description
Technical Field
The invention belongs to the technical field of water treatment, and particularly relates to a water treatment method for removing micropollutants by activating persulfate.
Background
Along with the rapid development of the industrial and agricultural level and the continuous improvement of the living standard of people, more than 90 percent of water in China is seriously polluted. A large number of toxic and harmful organic micropollutants, such as: discharging medicines and personal care products (PPCPs), Persistent Organic Pollutants (POPs), pesticides, petroleum organic pollutants, chemical products and other various artificial chemicals into a natural water body; meanwhile, the proliferation of algae or bacteria in water causes problems of algal toxins, odor, and endotoxins.
The toxic and harmful pollutants cause great threat to the living environment of aquatic organisms in natural water bodies, and meanwhile, for human beings, various organic matters cannot be effectively removed by the conventional process due to the characteristics of low concentration, high harm, high stability and the like. Therefore, under the threat of organic pollution to water quality, a novel technology capable of effectively removing trace refractory organic matters in water is researched, and the method has important strategic significance for improving water quality safety and promoting ecological civilization construction in China.
At present, chlorine, ozone, hydrogen peroxide and other oxidation methods are mainly adopted to remove harmful trace organic matters in water. Chlorine has a certain oxidation effect on organic matters and is usually used as a pre-oxidant for water treatment, but chlorine and various organic matters in water are easy to react to generate toxic and harmful chloro-substituted byproducts, so that the application of chlorine as the pre-oxidant is greatly limited. Ozone is very oxidizing, but its use is limited by the disadvantages of high cost and the tendency to react with organic materials to form bromate carcinogens. The hydrogen peroxide can be combined with ferrous ions to form a Fenton system to generate hydroxyl radicals with strong oxidizing property to remove organic micro-pollutants, but the process needs to be controlled to be acidic, so that the process needs to be continuously adjusted in pH, and the running process is complicated to control.
Disclosure of Invention
In view of the above-mentioned defects in the prior art, the main object of the present invention is to provide a water treatment method for removing micropollutants by activating persulfate, which uses chloride or sulfate to promote zero-valent iron to activate persulfate, thereby effectively removing micropollutants in water.
In order to achieve the purpose, the invention adopts the following technical scheme: a water treatment method for removing micropollutants by activating persulfate comprises the following steps:
adding chloride or sulfate into a water body containing the micro-pollutants, fully mixing, then adding zero-valent iron powder into the water body, then adding persulfate into the water body, stirring and fully mixing to remove the micro-pollutants in the water body.
As a further preference, the manner of adding the chloride or sulfate is: directly adding chloride salt or sulfate powder into water; or adding an aqueous solution containing chloride salt or sulfate into water, and fully mixing to ensure that the water body contains chloride ions or sulfate ions.
As further preference, the dosage of chloride ions in the chloride salt is less than or equal to 10 mg/L; the dosage of sulfate ions in the sulfate is less than or equal to 100 mg/L.
More preferably, the molar ratio of the zero-valent iron to the persulfate is 1:1 to 80: 1.
Preferably, the molar ratio of the persulfate to the micropollutants in the water body is 1: 1-100: 1.
Preferably, the pH value of the water body is 3-7.
Preferably, the chloride salt is one or a mixture of sodium chloride and potassium chloride, and the sulfate is one or a mixture of sodium sulfate and potassium sulfate; the persulfate is a peroxydisulfate salt which is one or a mixture of sodium peroxydisulfate and potassium peroxydisulfate; the zero-valent iron is commercially available zero-valent iron, nano zero-valent iron or iron waste of a processing plant.
As a further preference, the micro-pollutants are drugs and personal care products (PPCPs), algal toxins, pesticides, petroleum organic pollutants and various refractory organic substances; the water body containing the micro-pollutants is drinking water, sewage, underground water, industrial wastewater or reclaimed water containing the micro-pollutants.
The invention also aims to provide application of the water treatment method, which is used for repairing the water body containing the micropollutants.
As a further preference, when used for remediating groundwater containing micropollutants, a filter column is placed in the direction of groundwater flow, zero-valent iron is placed in the filter column, then chloride or sulfate is added to the groundwater, persulfate is added, and the micropollutants in the groundwater are removed after the groundwater passes through the filter column.
The invention has the beneficial effects that: the water treatment method of the invention utilizes the chloride or the sulfate to improve the adsorption of the micro-pollutants on the surfaces of iron and iron oxide (zero-valent iron), promotes the free radicals generated by activating the persulfate on the surfaces of the iron and iron oxide to directly oxidize the micro-pollutants, can achieve the purposes of promoting the activation of the persulfate on the zero-valent iron and quickly and thoroughly removing the pollutants by only adopting the common chloride or the common sulfate, and solves the problem of low activation rate of the existing persulfate.
Drawings
FIGS. 1a-1c are graphs showing the effect of chloride ion concentration on the degradation of (a) CBZ, (b) ACP and (c) SMX in example 3; FIG. 1d is a graph of the pseudo first order rate constant k' results in the Fe 0/PDS system.
FIGS. 2a-2c are graphs showing the effect of sulfate ion concentration on the degradation of (a) CBZ, (b) ACP and (c) SMX in example 6; FIG. 2d is a graph of the pseudo first order rate constant k' results in the Fe 0/PDS system.
FIG. 3 is a graph showing the degradation effects of the water treatment method of example 7 on three typical PPCPs- -Carbamazepine (CBZ), p-hydroxyacetanilide (ACP), and Sulfamethoxazole (SMX) in water.
Detailed Description
The embodiment of the invention provides a water treatment method for removing micropollutants by activating persulfate, which solves the problem of low activation rate of the existing persulfate.
In order to solve the above-mentioned defects, the main idea of the embodiment of the present invention is:
the water treatment method for removing micropollutants by activating persulfate provided by the embodiment of the invention comprises the following steps:
adding chloride or sulfate into a water body containing the micro-pollutants, fully mixing, then adding zero-valent iron powder into the water body, then adding persulfate into the water body, stirring and fully mixing to remove the micro-pollutants in the water body.
The above-mentioned sufficient mixing is to keep stirring and mixing state, and the concrete mode can be tubular mixer mixing, stirring paddle stirring or hydraulic stirring, etc.
The mole ratio of the zero-valent iron to the persulfate is preferably 1: 1-80: 1, and in the range, the larger the addition amount of the zero-valent iron is, the better the effect of removing the micro-pollutants is.
The dosage of chloride ions in the chlorinated salt is less than or equal to 10 mg/L; the dosage of sulfate ions in the sulfate is less than or equal to 100mg/L, and in the range, the larger the dosage of the chloride or the sulfate is, the better the effect of removing the micro-pollutants is.
Theoretically, the larger the persulfate dosage is, the better the effect of removing the micropollutants is. Through a great deal of research, the applicant finds that the adding amount of the persulfate is preferably 1: 1-100: 1 according to the molar ratio of the persulfate to the micropollutants in the water.
The zero-valent iron source can adopt commercial zero-valent iron, nano zero-valent iron or iron waste of a processing plant, such as filing, cutting, shaving, iron powder and the like.
The chloride salt is one or a mixture of sodium chloride and potassium chloride, and the sulfate is one or a mixture of sodium sulfate and potassium sulfate.
The persulfate is a peroxodisulfate, and the peroxodisulfate is one or a mixture of sodium peroxodisulfate and sodium peroxodisulfate.
The manner of adding the chloride or sulfate is to directly add chloride or sulfate powder into water, or add an aqueous solution containing the chloride or sulfate into the water, and fully mix the mixture to ensure that the water body contains chloride ions or sulfate ions.
The method provided by the embodiment of the invention can be used for treating micro-pollutants in drinking water and sewage, and can also be used for treating industrial wastewater and repairing underground water. The method has a good degradation effect on pollutants in the water body with the pH value of 3-7, and can adjust the optimal range of different micropollutants according to the characteristics of the micropollutants to achieve the fastest removal of the micropollutants. According to different water bodies, different reactor configurations and medicament ratios can be designed according to water quality requirements and design specifications, so that the aim of quickly removing micro pollutants in water is fulfilled.
The micro-pollutants removed by the method comprise a plurality of toxic and harmful micro-pollutants in water, such as persistent organic matters such as polychlorinated biphenyl, substitute-smelling flame retardants and the like, medicines, personal care products, algal toxins, pesticides or petroleum organic pollutants, a plurality of refractory organic matters and the like, and the application range is wide. Meanwhile, the water treatment method has the advantages of low cost, simple operation and easy popularization and application, and can be applied to groundwater remediation, industrial water treatment including electroplating wastewater, hospital wastewater, printing and dyeing wastewater and the like, drinking water treatment, sewage treatment and the like; and the used zero-valent iron is safe to use and can be used for ensuring the water quality safety.
The application of the water treatment method in the treatment and restoration of the water body containing the micropollutants is also within the protection scope of the invention.
In the concrete practical operation, when the filter column is used for groundwater remediation, a filter column can be placed in the direction of the flow direction of groundwater, zero-valent iron is placed in the filter column, persulfate is added into the groundwater, and the groundwater can be purified after passing through the filter column. The filter column can be a filter column or a permeable wall, etc.
The principle of the water treatment method for removing the micro-pollutants in the water by promoting zero-valent iron to activate persulfate through chloride or sulfate in the method provided by the embodiment of the invention is as follows: when chloride ions or sulfate ions exist in the water body, the increase of the salinity in the water promotes the adsorption of micro-pollutants on the surfaces of zero-valent iron and iron oxide, so that the concentration of the micro-pollutants on the surfaces of iron and iron oxide particles is increased; in the reaction of activating persulfate by zero-valent iron, a large amount of free radicals are firstly generated on the surfaces of iron and iron oxide and quickly react with more micropollutants adsorbed on the surfaces, so that the degradation of the micropollutants is promoted compared with a system without adding chloride and sulfate. During the process of activating persulfate by zero-valent iron, a large amount of sulfate radicals (SO 4. cndot. -) and hydroxyl radicals (. OH) are generated. The redox potential of the sulfate radical is 2.5-3.1V, the sulfate radical is higher than that of a hydroxyl radical (1.9-2.0V) under neutral or alkaline conditions and is close to that of the hydroxyl radical (2.4-2.7V) under acidic conditions, and the sulfate radical is a high-efficiency radical with selectivity, has strong selectivity on substances containing C-X bonds and is not easily influenced by the water quality background. The hydroxyl free radical is a high-efficiency broad-spectrum advanced oxidation free radical, and can oxidize all micro pollutants in water to different degrees. In conclusion, the chloride or sulfate can be used for promoting the adsorption of the micro-pollutants on the surfaces of iron and iron oxide, and the zero-valent iron is used for activating a persulfate system to generate two kinds of free radicals with strong oxidizing property, so that the degradation of the micro-pollutants in water is promoted.
In addition, the used persulfate is a green oxidant with strong stability and convenient transportation and use, and the zero-valent iron is a reducing agent with good performance and low price. By adding chloride or sulfate into the water, the adsorption and oxidative degradation efficiency of the micropollutants on the surfaces of iron and iron oxide in the system can be greatly improved. The water treatment method has the advantages of high persulfate activation efficiency, high pollutant oxidation and degradation efficiency, wide application range, convenience in operation and the like.
The invention is further described with reference to the drawings and the following detailed description, which are not intended to limit the invention in any way. Reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.
Unless otherwise indicated, reagents and materials used in the following examples are commercially available.
Example 1
Adding sodium chloride powder into a water body containing micro-pollutants to enable the water body to contain chloride ions, fully mixing, then adding zero-valent iron powder into the water body, then adding sodium peroxodisulfate into the water body, stirring and fully mixing to remove the micro-pollutants in the water body.
The dosage of chloride ions in the chloride salt is 1 mg/L.
The molar ratio of the zero-valent iron to the persulfate is 3.5: 1.
The molar ratio of the adding amount of the persulfate to the micro-pollutants in the water body is 500: 1.
The pH value of the water body is 7.
The zero-valent iron is commercially available zero-valent iron, nano zero-valent iron or iron waste of a processing plant.
The micro-pollutants are petroleum organic pollutants; the upper water body is industrial water containing micro-pollutants.
After the treatment of the embodiment of the invention, the micro-pollutants in the water body are all obviously reduced.
Example 2
Adding a potassium chloride aqueous solution into a water body containing the micro-pollutants to ensure that the water body contains chloride ions, fully mixing, then adding zero-valent iron powder into the water body, then adding potassium peroxodisulfate into the water body, stirring and fully mixing to remove the micro-pollutants in the water body.
The dosage of chloride ions in the chloride salt is 6.4 mg/L.
The molar ratio of the zero-valent iron to the persulfate is 3.5: 1.
The molar ratio of the adding amount of the persulfate to the micro-pollutants in the water body is 500: 1.
The pH value of the water body is 6.
The zero-valent iron is commercially available zero-valent iron, nano zero-valent iron or iron waste of a processing plant.
The micro-pollutants are pesticide organic pollutants; the upper water body is drinking water containing micro-pollutants.
After the treatment of the embodiment of the invention, the micro-pollutants in the water body are all obviously reduced.
Example 3
Adding sodium chloride and potassium chloride aqueous solution into a water body containing the micro-pollutants to enable the water body to contain chloride ions, fully mixing, then adding zero-valent iron powder into the water body, then adding potassium peroxodisulfate into the water body, stirring and fully mixing to remove the micro-pollutants in the water body.
The dosage of chloride ions in the chloride salt is 10 mg/L.
The molar ratio of the zero-valent iron to the persulfate is 3.5: 1.
The molar ratio of the adding amount of the persulfate to the micro-pollutants in the water body is 500: 1.
The pH value of the water body is 7.
The zero-valent iron is commercially available zero-valent iron, nano zero-valent iron or iron waste of a processing plant.
The micropollutants are carbamazepine drugs; the water body is hospital wastewater containing micro-pollutants.
After the treatment of the embodiment of the invention, the micro-pollutants in the water body are all obviously reduced.
FIGS. 1a-1c are graphs of the effect of chloride ion concentration on the degradation of (a) CBZ, (b) ACP, (c) SMX, and FIG. 1d is the pseudo-first order rate constant k' in the Fe 0/PDS system; reaction conditions [ CBZ ]0 ═ ACP ]0 ═ SMX ]0 ═ 2 μ M, [ PDS ]0 ═ 1mM, [ Fe 0 ]0 ═ 0.2g/L, where control (control) indicated no chloride ions.
Example 4
Adding sodium sulfate powder into a water body containing micro-pollutants to enable the water body to contain sulfate ions, fully mixing, then adding zero-valent iron powder into the water body, then adding sodium peroxodisulfate into the water body, stirring and fully mixing to remove the micro-pollutants in the water body.
The dosage of sulfate ions in the sulfate is 60 mg/L.
The molar ratio of the zero-valent iron to the persulfate is 3.5: 1.
The molar ratio of the adding amount of the persulfate to the micro-pollutants in the water body is 500: 1.
The pH value of the water body is 6.
The zero-valent iron is commercially available zero-valent iron, nano zero-valent iron or iron waste of a processing plant.
The micro-pollutants are algal toxins; the water body is underground water containing micro pollutants.
When the method is used for groundwater remediation, a filter column can be placed in the direction of groundwater flow, zero-valent iron is placed in the filter column, then chloride or sulfate is added into groundwater, persulfate is added, and groundwater can be purified after passing through the filter column. The filter column can be a filter column or a permeable wall, etc.
Example 5
Adding a potassium sulfate aqueous solution into a water body containing the micro-pollutants to ensure that the water body contains sulfate ions, fully mixing, then adding zero-valent iron powder into the water body, then adding sodium peroxodisulfate and potassium peroxodisulfate into the water body, stirring and fully mixing to remove the micro-pollutants in the water body.
The dosage of sulfate ions in the sulfate is 87.6 mg/L.
The molar ratio of the zero-valent iron to the persulfate is 3.5: 1.
The molar ratio of the adding amount of the persulfate to the micro-pollutants in the water body is 500: 1.
The pH value of the water body is 7.
The zero-valent iron is commercially available zero-valent iron, nano zero-valent iron or iron waste of a processing plant.
The micropollutants are polychlorinated biphenyls; the water body is sewage containing micro-pollutants.
After the treatment of the embodiment of the invention, the micro-pollutants in the water body are all obviously reduced.
Example 6
Adding potassium sulfate and a sodium sulfate aqueous solution into a water body containing the micro-pollutants to enable the water body to contain sulfate ions, fully mixing, then adding zero-valent iron powder into the water body, then adding sodium peroxodisulfate and potassium peroxodisulfate into the water body, stirring and fully mixing to remove the micro-pollutants in the water body.
The dosage of sulfate ions in the sulfate is 100 mg/L.
The molar ratio of the zero-valent iron to the persulfate is 3.5: 1.
The molar ratio of the adding amount of the persulfate to the micro-pollutants in the water body is 500: 1.
The pH value of the water body is 7.
The zero-valent iron is commercially available zero-valent iron, nano zero-valent iron or iron waste of a processing plant.
The micro-pollutants are smelly flame retardants; the water body is drinking water containing micro-pollutants.
After the treatment of the embodiment of the invention, the micro-pollutants in the water body are all obviously reduced.
FIGS. 2a-2c are graphs showing the effect of sulfate ion concentration on the degradation of (a) CBZ, (b) ACP, and (c) SMX; fig. 2d is the pseudo first order rate constant k' in the Fe 0/PDS system under reaction conditions [ CBZ ]0 ═ ACP ]0 ═ 2 μ M, [ PDS ]0 ═ 1mM, [ Fe 0 ]0 ═ 0.2g/L, where control (control) indicates no sulfate ion.
Example 7
The water treatment method comprises the following steps: adding a sodium chloride or sodium sulfate aqueous solution into a water body containing the micro-pollutants to ensure that the water body contains chloride ions or sulfate ions, fully mixing, then adding zero-valent iron powder into the water body, then adding sodium peroxodisulfate into the water body, stirring and fully mixing to remove the micro-pollutants in the water body.
By adopting the embodiment mode, sewage containing Carbamazepine (CBZ), p-hydroxyacetanilide (ACP) and Sulfamethoxazole (SMX) is treated, and meanwhile, a group of control groups is set, wherein the specific groups are as follows:
(1) a Fe 0/persulfate control group, which is treated by using zero-valent iron/persulfate, wherein the molar ratio of the zero-valent iron to the persulfate is 3.6: 1;
(2) an Fe 0/persulfate + Cl-experimental group, namely treating by using a chloride salt-zero-valent iron/persulfate, wherein the molar ratio of the zero-valent iron to the persulfate is 3.6:1, and the dosage of chloride ions is 10 mg/L;
(2) fe 0/persulfate + SO 42-control group, namely treating by using sulfate-zero-valent iron/persulfate, wherein the molar ratio of zero-valent iron to persulfate is 3.6:1, and the dosage of sulfate ions is 100 mg/L;
as shown in the attached figure 1, the method of the embodiment of the invention has good removal effect on three typical PPCPs, namely Carbamazepine (CBZ), p-hydroxyacetanilide (ACP) and Sulfamethoxazole (SMX) in water. After chloride ions or sulfate ions are added into the zero-valent iron activated persulfate system, the first-order reaction rate k' (min-1) is greatly increased compared with that of a control group. After chloride ions are added, the k 'of CBZ, ACP and SMX is respectively increased to 8.2 times, 6.3 times and 15.2 times of the original k'; after the sulfate ions are added, the k 'of CBZ, ACP and SMX is respectively increased to 12.0 times, 10.5 times and 19.9 times of the original k'.
The embodiment of the invention shows that the effect of quickly and efficiently removing the micro-pollutants can be achieved by activating the persulfate through the chloride or the sulfate.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
the water treatment method of the invention utilizes the chloride or the sulfate to improve the adsorption of the micro-pollutants on the surfaces of iron and iron oxide (zero-valent iron), promotes the free radicals generated by activating the persulfate on the surfaces of the iron and iron oxide to directly oxidize the micro-pollutants, can achieve the purposes of promoting the activation of the persulfate on the zero-valent iron and quickly and thoroughly removing the pollutants by only adopting the common chloride or the common sulfate, and solves the problem of low activation rate of the existing persulfate.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The water treatment method for removing micropollutants by activating persulfate is characterized by comprising the following steps: the method comprises the following steps:
adding chloride or sulfate into a water body containing micro-pollutants, adding zero-valent iron powder into the water body after fully mixing, then adding persulfate into the water body, stirring and fully mixing to remove the micro-pollutants in the water body, wherein the mode of adding the chloride or sulfate is as follows: directly adding chloride salt or sulfate powder into water; or adding an aqueous solution containing chloride salt or sulfate into water, and fully mixing to ensure that the water body contains chloride ions or sulfate ions, wherein the dosage of the chloride ions in the chloride salt is less than or equal to 10 mg/L; the dosage of sulfate ions in the sulfate is less than or equal to 100mg/L, the molar ratio of the zero-valent iron to the persulfate is 1: 1-80: 1, the chloride is one or a mixture of sodium chloride and potassium chloride, and the sulfate is one or a mixture of sodium sulfate and potassium sulfate; the persulfate is a peroxydisulfate salt which is one or a mixture of sodium peroxydisulfate and potassium peroxydisulfate; the zero-valent iron is commercially available zero-valent iron, nano zero-valent iron or iron waste of a processing plant, and the micro pollutants are algal toxin, polychlorinated biphenyl, olfactory flame retardant, carbamazepine, p-hydroxyacetanilide or sulfamethoxazole; the water body containing the micro-pollutants is drinking water, sewage, underground water, industrial wastewater or reclaimed water containing the micro-pollutants, the molar ratio of the adding amount of the persulfate to the micro-pollutants in the water body is 1: 1-100: 1, and the pH value of the water body is 3-7.
2. Use of a water treatment process according to claim 1, characterized in that: used for repairing the water body containing the micro-pollutants.
3. Use of a water treatment method according to claim 2, characterized in that: when the method is used for repairing underground water containing micro-pollutants, a filter column is placed in the direction of underground water flow, zero-valent iron is placed in the filter column, then chloride or sulfate and persulfate are added into the underground water, and the micro-pollutants in the underground water are removed after the underground water passes through the filter column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810805160.1A CN108946908B (en) | 2018-07-20 | 2018-07-20 | Water treatment method for removing micropollutants by activating persulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810805160.1A CN108946908B (en) | 2018-07-20 | 2018-07-20 | Water treatment method for removing micropollutants by activating persulfate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108946908A CN108946908A (en) | 2018-12-07 |
| CN108946908B true CN108946908B (en) | 2022-02-01 |
Family
ID=64482133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810805160.1A Active CN108946908B (en) | 2018-07-20 | 2018-07-20 | Water treatment method for removing micropollutants by activating persulfate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108946908B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526311B (en) * | 2019-09-07 | 2022-06-10 | 中国地质科学院水文地质环境地质研究所 | Agent for repairing organic polluted water by using green tea nano iron activated persulfate system |
| CN110835178A (en) * | 2019-11-20 | 2020-02-25 | 中山大学 | Method for directly oxidizing and degrading aniline organic pollutants in water |
| CN112142279A (en) * | 2020-05-20 | 2020-12-29 | 华能大庆热电有限公司 | Thermal power plant calcium carbonate sludge regeneration treatment agent and process |
| CN111410289A (en) * | 2020-05-20 | 2020-07-14 | 中山大学 | Method for treating water body containing organic pollutants |
| CN114940535A (en) * | 2022-05-27 | 2022-08-26 | 长三角(义乌)生态环境研究中心 | Platinum group metal modified zero-valent iron and composite oxidant are combined to remove antibiotics in sewage |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008119063A1 (en) * | 2007-03-28 | 2008-10-02 | Worcester Polytechnic Institute | Simultaneous reduction/oxidation process for destroying an organic solvent |
| CN103342410A (en) * | 2013-07-25 | 2013-10-09 | 中山大学 | Water treatment method for removing arsenic by strengthening zero-valent iron |
| CN103342408A (en) * | 2013-07-03 | 2013-10-09 | 同济大学 | Method for processing degradation-resistant organic pollutants in water |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2951096B1 (en) * | 2009-10-09 | 2013-03-15 | Total Sa | PROCESS FOR OXIDATION OF ORGANIC COMPOUNDS |
| CN102633349B (en) * | 2011-12-16 | 2014-06-11 | 华南理工大学 | Method for treating track non-degradable organisms in water by aid of heterogenous sulfate radical oxidation |
| WO2013100262A1 (en) * | 2011-12-29 | 2013-07-04 | Woongjincoway Co., Ltd. | Method for treating water containing organics |
| CN105253983A (en) * | 2015-09-30 | 2016-01-20 | 中山大学 | Water treatment method of zero-valent iron-copper bi-metal activated persulfate |
| CN105198067A (en) * | 2015-09-30 | 2015-12-30 | 中山大学 | Method for treating water by using zero-valent iron-nickel bi-metal activated persulfate |
| CN106242014A (en) * | 2016-06-22 | 2016-12-21 | 湘潭大学 | A kind of persulfate activation method processed for waste water |
| CN106830271A (en) * | 2017-01-17 | 2017-06-13 | 华侨大学 | It is a kind of go water removal in chlorophenols compound single persulfate composite drug |
-
2018
- 2018-07-20 CN CN201810805160.1A patent/CN108946908B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008119063A1 (en) * | 2007-03-28 | 2008-10-02 | Worcester Polytechnic Institute | Simultaneous reduction/oxidation process for destroying an organic solvent |
| CN103342408A (en) * | 2013-07-03 | 2013-10-09 | 同济大学 | Method for processing degradation-resistant organic pollutants in water |
| CN103342410A (en) * | 2013-07-25 | 2013-10-09 | 中山大学 | Water treatment method for removing arsenic by strengthening zero-valent iron |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108946908A (en) | 2018-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108946908B (en) | Water treatment method for removing micropollutants by activating persulfate | |
| Hassan et al. | Employing TiO2 photocatalysis to deal with landfill leachate: Current status and development | |
| Ahmed | An overview of arsenic removal technologies in Bangladesh and India | |
| CN105253983A (en) | Water treatment method of zero-valent iron-copper bi-metal activated persulfate | |
| CN105198067A (en) | Method for treating water by using zero-valent iron-nickel bi-metal activated persulfate | |
| Dehghani et al. | The effect of aeration on advanced coagulation, flotation and advanced oxidation processes for color removal from wastewater | |
| Abidemi et al. | Treatment technologies for wastewater from cosmetic industry–A review | |
| CN105036293A (en) | Method for removing organic pollutants in water by ferrate reinforced ozone oxidation | |
| CN110563191B (en) | Method for removing organic micropollutants in drinking water by utilizing persulfate reinforced ferric salt coagulation process | |
| CN105152406A (en) | Process for treating biochemical tail water landfill leachate by combining coagulation, oxidation and adsorption | |
| CN107651777A (en) | A kind of carbonaceous material cooperates with the method for carrying out water process with ferrate | |
| Bi et al. | Simultaneous decontamination of multi-pollutants: A promising approach for water remediation | |
| Pulicharla et al. | Removal processes of antibiotics in waters and wastewaters: crucial link to physical-chemical properties and degradation | |
| Goi | Advanced oxidation processes for water purification and soil remediation | |
| CN110540283A (en) | Method for enhanced removal of sulfamethoxazole in water | |
| CN104386799B (en) | A kind of method removing micro quantity organic pollutant in water | |
| Lei et al. | Ultrasound-based advanced oxidation processes for landfill leachate treatment: Energy consumption, influences, mechanisms and perspectives | |
| CN109368764A (en) | A kind of method for treating water for strengthening persulfate oxidation | |
| CN1312055C (en) | Ozone high grade oxidation method for treating water | |
| CN205442858U (en) | Ozone air floating recycling treatment device | |
| Kamaraj et al. | Endocrine-disrupting pollutants in domestic and industrial wastewater: occurrence and removal by advanced treatment system for wastewater reuse | |
| CN106241901A (en) | A kind of inorganic water purification agent | |
| CN110790428A (en) | Method for catalytic oxidation of emerging micropollutants by activated carbon-ceramic membrane-high-activity iron | |
| Lofrano et al. | 13. TANNERY WASTEWATER TREATMENT BY ADVANCED OXIDATION PROCESSES | |
| Bergendahl et al. | Applications of advanced oxidation for wastewater treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |