CN104229973A - Method for removing diclofenac in sewage by utilizing nanoscale zero-valent iron fenton-like technology - Google Patents
Method for removing diclofenac in sewage by utilizing nanoscale zero-valent iron fenton-like technology Download PDFInfo
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- CN104229973A CN104229973A CN201310488628.6A CN201310488628A CN104229973A CN 104229973 A CN104229973 A CN 104229973A CN 201310488628 A CN201310488628 A CN 201310488628A CN 104229973 A CN104229973 A CN 104229973A
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Abstract
The invention relates to a method for removing diclofenac in sewage by utilizing a nanoscale zero-valent iron fenton-like technology. The method comprises the following steps: adding nanoscale zero-valent iron and hydrogen peroxide into sewage containing diclofenac under the condition of pH value being 2-6, and reacting for 10-30 minutes to oxidize and remove diclofenac in the sewage, wherein the mass concentration of diclofenac in the sewage is 5-100mg per liter, 0.1-0.6g of nanoscale zero-valent iron is added into per liter of sewage, and 200-600mg of hydrogen peroxide is added into per liter of sewage. Compared with the prior art, the method is simple in reaction condition, mild in reaction, short in treatment time and high in diclofenac removal rate, does not have secondary pollution, is suitable for treating the sewage containing diclofenac and other pharmaceutical wastewater, and is advantageous to resource utilization of sewage.
Description
Technical field
The present invention relates to the sewage water treatment method containing diclofenac, especially relate to a kind of method utilizing nano zero valence iron class Fenton technology to remove diclofenac in sewage.
Background technology
Pharmaceutical industry product category is many, complex manufacturing, and the features such as pharmacy waste water has complicated component, organic content is high, toxicity is large, the dark and biodegradability difference of color of generation, difficulty of carrying out a biological disposal upon is large.If pharmacy waste water is effectively processed at the sewage works of pharmaceutical factory and enters municipal wastewater treatment plant, the concentration of municipal effluent Chinese traditional medicine pollutent will be caused to increase, thus increase sewage treatment load and the intractability of municipal wastewater treatment plant.Research shows, medicine and Personal hygiene nursing materials are the ubiquitous organic micro-pollutants in water and sewage found after Insecticides (tech) & Herbicides (tech) and endocrine disrupter, it has caused extensive concern both domestic and external to the impact that environment causes, it is once enter in human body, will be transformed into polarity, deliquescent meta-bolites and acid, along with urine and ight soil enter in municipal effluent.Research shows, traditional biological process is difficult to remove all drug contamination things completely.Therefore, the drug contamination thing that sewage remains after process can enter in surface water, underground water or seawater along with the discharge of Sewage Plant tail water, thus has an impact to the mankind and damage aquatic environment.
By finding diclofenac ubiquity in sewage to the existence of medicine typical in Sewage Plant and Personal hygiene nursing materials and the investigation of the situation of removal, and research shows that diclofenac is not easily degraded in water body, there is persistence (find that the removal effect of traditional biological treatment to it is very poor by the investigation of Sewage Plant, be only about 9%).Research shows that diclofenac has very strong eco-toxicity: 1999, the people such as Dietrich and Prietz have studied diclofenac to the lethality of zebrafish embryo and teratogenecity harm, be placed on by zebrafish embryo in the aqueous solution containing diclofenac, the lethal concentration recording diclofenac is only 480 ± 50 micrograms and often rises.The people such as Triebskom find that the diclofenac solution that 1 microgram often rises can cause the cell of the tissues such as the liver of fish, kidney and the fish gill to change.The people such as Dietrich study in the natural water finding that Gammaru shrimp is in containing multiple organic drug (comprising diclofenac) and there will be the improper physiological phenomenons such as disorderly and frequency quickening of casting off a skin, and water flea there will be multiply the age delay, the phenomenon such as larva bodily form increase.In addition, diclofenac, except having direct eco-toxicity, also has indirect ecology hazardness.Diclofenac easily enrichment in vivo, may pass through food chain transport, work the mischief to other species.Therefore, to being a problem demanding prompt solution containing the removal of diclofenac waste water.
For being difficult to biodegradable drug contamination thing, in order to improve its removal effect, high-level oxidation technology is widely used, and mainly comprises: ultraviolet, ultraviolet/hydrogen peroxide, ozone, ozone/hydrogen peroxide solution etc.Previous investigator to utilizing ozone, ultraviolet and remove typical medicaments pollutent with hydrogen peroxide coupling and carried out large quantity research, but utilize Fenton also relatively less to its research of degrading.Fenton system is under Fe (II) existent condition, hydrogen peroxide is changed into hydroxyl radical free radical, and hydroxyl radical free radical has strong oxidizing property, does not have a selectivity, can react with the organism of 95% organic degraded.If Fe (II) is different with hydrogen peroxide concentration, the radical pair organism that also can form other form is effectively degraded, such as: perhydroxyl radical free radical, ultra-oxygen anion free radical, perhydroxy anion and organic free radical.But traditional Fenton system existing defects, such as: the acidic nature of Fe (II) just requires that the pH of system maintains about 3-4, otherwise molysite will be separated out with ferric hydroxide precipitate, will reduce the katalysis of hydrogen peroxide like this.In order to evade the defect that traditional Fenton system exists, in recent years, some investigators improve traditional Fenton, are referred to as class Fenton, and in water treatment and soil remediation, have carried out successful Application.One is replace ferrous salt, to reduce the consumption of hydrogen peroxide with deliquescent molysite.Two is replace ferrous salt with solid-state pyrrhosiderite, magnetite, pyrite, ferrihydrite, rhombohedral iron ore, lepidocrocite, and this type of iron ore also can produce the hydroxyl radical free radical of high density and be widely used.Pyrrhosiderite hydrogen peroxide coupling comparatively Fe
2+/ hydrogen peroxide and Fe
3+the coupling of/hydrogen peroxide has very large advantage in pH scope control; And adopt high stability and highly active rhombohedral iron ore to be that catalyzer can make reaction process carry out under 80 ~ 120 DEG C of conditions, therefore more effective to organic removal.Three is for catalyzer with the inner complex of iron.In traditional Fenton system, add the sequestrants such as citric acid, humic acids, N-hydroxyethyl-iminodiethanoic acid to improve organic clearance, in addition, chitosan is also used to as a kind of natural sequestrant aromatics of degrading.After adding sequestrant in traditional Fenton system, the inner complex of Fe (II) or Fe (III) can be formed in neutral conditions, thus avoid iron and separate out with precipitation forms, these inner complexs can produce the hydroxyl radical free radical of very high density in neutral conditions simultaneously.
In addition to the above method, in recent years because nano material has huge specific surface area and high reactivity, speed of reaction is improved, is applied to contaminated soil and groundwater remediation and sewage disposal, and wherein relatively many to nano zero valence iron research.Found by research, nano zero valence iron Fenton system has good removal effect to poisonous and hazardous inorganics, such as arsenic.But, adopt nano zero valence iron to combine with hydrogen peroxide and form class Fenton system to the research of sewage Chinese traditional medicine pollutent also seldom, especially to the removal of diclofenac in sewage.Therefore, be necessary to further investigate it.
Chinese patent CN101570368A discloses a kind of method by Fenton oxidation process waste water, and wherein oxygenant is hydrogen peroxide or clorox, and catalyzer is iron filings or Iron nitrate.This patent adopts iron filings to make catalyzer, and specific surface area is little compared with nano zero valence iron many, and therefore speed of reaction can be slow a lot; And the Fenton oxidation facture that this patent is more traditional is not high to the clearance of COD, only has about 45%, to the organic pollutant not good removal effect of a lot of difficult degradation.Adopt nano zero valence iron to replace waste iron filing and make catalyzer, can speed of reaction be improved, increase the growing amount of hydroxyl radical free radical, thus improve the removal effect to Persistent organic pollutants.
Summary of the invention
Object of the present invention be exactly provide that a kind of reaction conditions is simple to overcome defect that above-mentioned prior art exists, reaction temperature and, the treatment time nano zero valence iron class Fenton technology that utilizes that is short, high to the degradation rate of diclofenac, non-secondary pollution removes the method for diclofenac in sewage.The method can remove the diclofenac in sewage quickly and efficiently, reduces and contains diclofenac sewage to the harm of environment, be conducive to the recycling of follow-up sewage.
Object of the present invention can be achieved through the following technical solutions:
Utilize nano zero valence iron class Fenton technology to remove a method for diclofenac in sewage, to containing in the sewage of diclofenac, add nano zero valence iron and hydrogen peroxide, 10 ~ 30 minutes reaction times, the diclofenac in oxidation removal sewage.First diclofenac changes into 4 '-hydroxyl-diclofenac and 5-hydroxyl diclofenac after Fenton oxidation, is then transformed into 2-nitrophenyl-acetic acid further, and is finally converted into water and carbonic acid gas.Sewage after oxidation, without the need to being further processed, can directly discharge.
Further, in described sewage, the mass concentration of diclofenac is 5 ~ 100 milligrams per liter, and the input amount of described nano zero valence iron adds 0.1 ~ 0.6 gram in often liter of sewage, and the input amount of described hydrogen peroxide is for adding 200 ~ 600 milligrams in often liter of sewage.
Further, before adding nano zero valence iron and hydrogen peroxide, the pH value regulating sewage is 2 ~ 6.
Further, before adding nano zero valence iron and hydrogen peroxide, the pH value regulating sewage is 2 ~ 3.
Again further, before adding nano zero valence iron and hydrogen peroxide, the pH value regulating sewage is 3.
Further, the grain diameter of described nano zero valence iron is 50 ~ 70 nanometers.
Further, in sewage, add nano zero valence iron and hydrogen peroxide simultaneously.
Compared with prior art, the present invention has the following advantages and beneficial effect:
1, applied widely, reaction conditions is simple.The present invention adds nano zero valence iron and hydrogen peroxide to containing in the waste water of diclofenac, and temperature of reaction is not limit, and can reach good removal effect under normal temperature and pressure.
2, speed of reaction is fast.The nano zero valence iron particle diameter adopted is 50-70 nanometer, has huge specific surface area and high reactivity, therefore has very fast speed of reaction.Just good removal effect can be had to the sewage containing mass concentration being the diclofenac of 5-100 milligrams per liter in 10-30 minute.
3, processing cost is low.Compared to other strong oxidizers, as ozone, the present invention's hydrogen peroxide used is cheaply easy to get, and treating processes is simple and easy to do, and construction cost is low, has a good application prospect.
4, environmental friendliness.The nano zero valence iron class Fenton technology that utilizes of the present invention is removed in the method for diclofenac in sewage, and hydrogen peroxide can not cause secondary pollution to environment in concentration range used, is generally acknowledged Green Oxidant.Substantially not containing harmful organic substance in sewage after process, be conducive to the recycling of sewage.
5, target compound scope is suitable for wide.The present invention, except being applicable to the sewage containing diclofenac, is also applicable to the sewage of the drug contamination thing containing other difficult degradations.
Accompanying drawing explanation
Fig. 1 is that the pH value of sewage and reaction times are on the impact of diclofenac clearance;
Fig. 2 is that the concentration of diclofenac in sewage and reaction times are on the impact of diclofenac clearance.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
In following examples, in water sample, the analysis of diclofenac measures and adopts Agilent1200 high performance liquid chromatography (HPLC), and separator column adopts C18 post (250 millimeters × 4.6 millimeters, packing material size 5 microns, Supelco).Moving phase is water (0.1% formic acid) and acetonitrile, and flow velocity is 1 milliliter of per minute, sample size 50 microlitre, column temperature 30 degrees Celsius, determined wavelength 270 nanometer.Eluent gradient changes, and start acetonitrile concentration and be 20% and keep 1 minute, in 8 minutes, acetonitrile concentration is raised to 100% subsequently, and keep 2 minutes, last acetonitrile concentration returned 20% in 6 minutes.
Embodiment 1
Adopt nano zero valence iron class Fenton technology to remove the method for diclofenac in sewage, process is containing the sewage of 25 milligrams per liter of diclofenacs.
Regulate initial pH value to be 2, in system, add hydrogen peroxide 400 milligrams per liter of sewage, nano zero valence iron 0.5 gram of often liter of sewage, stirs, and wherein, the grain diameter of nano zero valence iron is 50 ~ 70 nanometers simultaneously.The clearance of diclofenac in sewage is detected when the differential responses time.
Embodiment 2
Difference from Example 1 is, the initial pH value of sewage be regulated to be 3.
Embodiment 3
Difference from Example 1 is, the initial pH value of sewage be regulated to be 4.
Embodiment 4
Difference from Example 1 is, the initial pH value of sewage be regulated to be 5.
Embodiment 5
Difference from Example 1 is, the initial pH value of sewage be regulated to be 6.
In embodiment 1 ~ 5, will detect the clearance of diclofenac in sewage when each embodiment is carried out when the differential responses time, result as shown in Figure 1.As seen from Figure 1, at one time under condition, during five condition of different pH, diclofenac is higher at the clearance of the condition of pH=2 ~ 4, and especially under the adjustment of pH=3, clearance is the highest.In reaction after 20 minutes, under five pH conditions, the clearance of diclofenac all can reach more than 88%.
Embodiment 6
Adopt nano zero valence iron class Fenton technology to remove the method for diclofenac in sewage, process is containing the sewage of 5 milligrams per liter of diclofenacs.
The initial pH value regulating sewage is 3, and in system, add hydrogen peroxide 400 milligrams per liter of sewage, nano zero valence iron 0.5 gram of often liter of sewage, stirs, and wherein, the grain diameter of nano zero valence iron is 50 ~ 70 nanometers simultaneously.The clearance of diclofenac in sewage is detected when the differential responses time.
Embodiment 7
Difference from Example 6 is, in pending sewage, diclofenac mass concentration is 15 milligrams per liter.
Embodiment 8
Difference from Example 6 is, in pending sewage, diclofenac mass concentration is 25 milligrams per liter.
Embodiment 9
Difference from Example 6 is, in pending sewage, diclofenac mass concentration is 50 milligrams per liter.
Embodiment 10
Difference from Example 6 is, in pending sewage, diclofenac mass concentration is 100 milligrams per liter.
In embodiment 6 ~ 10, will detect the clearance of diclofenac in sewage when each embodiment is carried out when the differential responses time, result as shown in Figure 2.As seen from Figure 2, along with the raising of initial diclofenac concentration, the reaction times needed for degraded increases, and final clearance reduces.But in reaction 30 minutes, under five initial diclofenac concentration conditions of difference, its clearance all can reach more than 90%.
Embodiment 11
A kind of method utilizing nano zero valence iron class Fenton technology to remove diclofenac in sewage, the pH value regulating sewage is 2, mass concentration to diclofenac is in the sewage of 5 milligrams per liter, add nano zero valence iron and hydrogen peroxide simultaneously, the input amount of nano zero valence iron adds 0.1 gram in often liter of sewage, and the input amount of hydrogen peroxide, for adding 200 milligrams in often liter of sewage, stirs, 10 minutes reaction times, the diclofenac in oxidation removal sewage.Wherein, the grain diameter of nano zero valence iron is 50 ~ 70 nanometers.
Embodiment 12
A kind of method utilizing nano zero valence iron class Fenton technology to remove diclofenac in sewage, the pH value regulating sewage is 6, mass concentration to diclofenac is in the sewage of 100 milligrams per liter, add nano zero valence iron and hydrogen peroxide simultaneously, the input amount of nano zero valence iron adds 0.6 gram in often liter of sewage, and the input amount of hydrogen peroxide, for adding 600 milligrams in often liter of sewage, stirs, 30 minutes reaction times, the diclofenac in oxidation removal sewage.Wherein, the grain diameter of nano zero valence iron is 50 ~ 70 nanometers.
Claims (7)
1. utilize nano zero valence iron class Fenton technology to remove a method for diclofenac in sewage, it is characterized in that, to containing in the sewage of diclofenac, add nano zero valence iron and hydrogen peroxide, 10 ~ 30 minutes reaction times, the diclofenac in oxidation removal sewage.
2. a kind of method utilizing nano zero valence iron class Fenton technology to remove diclofenac in sewage according to claim 1, it is characterized in that, in described sewage, the mass concentration of diclofenac is 5 ~ 100 milligrams per liter, the input amount of described nano zero valence iron adds 0.1 ~ 0.6 gram in often liter of sewage, and the input amount of described hydrogen peroxide is for adding 200 ~ 600 milligrams in often liter of sewage.
3. a kind of method utilizing nano zero valence iron class Fenton technology to remove diclofenac in sewage according to claim 1, it is characterized in that, before adding nano zero valence iron and hydrogen peroxide, the pH value regulating sewage is 2 ~ 6.
4. a kind of method utilizing nano zero valence iron class Fenton technology to remove diclofenac in sewage according to claim 3, it is characterized in that, before adding nano zero valence iron and hydrogen peroxide, the pH value regulating sewage is 2 ~ 3.
5. a kind of method utilizing nano zero valence iron class Fenton technology to remove diclofenac in sewage according to claim 4, it is characterized in that, before adding nano zero valence iron and hydrogen peroxide, the pH value regulating sewage is 3.
6. a kind of method utilizing nano zero valence iron class Fenton technology to remove diclofenac in sewage according to claim 1, it is characterized in that, the grain diameter of described nano zero valence iron is 50 ~ 70 nanometers.
7. a kind of method utilizing nano zero valence iron class Fenton technology to remove diclofenac in sewage according to claim 1, is characterized in that, add nano zero valence iron and hydrogen peroxide simultaneously in sewage.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105254151A (en) * | 2015-10-30 | 2016-01-20 | 浙江清华长三角研究院 | Reduction dehalogenation process of residual activated sludge |
| CN111470671A (en) * | 2020-04-16 | 2020-07-31 | 山东省科学院激光研究所 | Method for treating arsenic-containing organic wastewater |
| CN113275037A (en) * | 2021-05-31 | 2021-08-20 | 华中科技大学 | Method for treating organic solvent by heterogeneous Fenton-like method |
| CN113683177A (en) * | 2021-07-21 | 2021-11-23 | 浙江工业大学 | Water treatment method for removing diclofenac from water by catalyzing zero-valent zinc with cobaltosic oxide, cobalt hydroxide or nickel hydroxide |
| CN114477418A (en) * | 2022-01-29 | 2022-05-13 | 哈尔滨工业大学 | Method for removing organic pollutants in water by zero-valent iron reinforced hypochlorite |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295341A (en) * | 2011-06-13 | 2011-12-28 | 清华大学 | Method for treating chlorine-containing organic waste water by heterogeneous phase Fenton-like reaction |
-
2013
- 2013-10-17 CN CN201310488628.6A patent/CN104229973A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295341A (en) * | 2011-06-13 | 2011-12-28 | 清华大学 | Method for treating chlorine-containing organic waste water by heterogeneous phase Fenton-like reaction |
Non-Patent Citations (2)
| Title |
|---|
| WEI LI等: "Effects of Fenton treatment on the properties of effluent organic matter and their relationships with the degradation of pharmaceuticals and personal care products", 《WATER RESEARCH》 * |
| WEI LI等: "Effects of Fenton treatment on the properties of effluent organic matter and their relationships with the degradation of pharmaceuticals and personal care products", 《WATER RESEARCH》, vol. 46, no. 2, 15 November 2011 (2011-11-15), XP028349228, DOI: doi:10.1016/j.watres.2011.11.002 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105254151A (en) * | 2015-10-30 | 2016-01-20 | 浙江清华长三角研究院 | Reduction dehalogenation process of residual activated sludge |
| CN111470671A (en) * | 2020-04-16 | 2020-07-31 | 山东省科学院激光研究所 | Method for treating arsenic-containing organic wastewater |
| CN111470671B (en) * | 2020-04-16 | 2022-05-13 | 山东省科学院激光研究所 | Method for treating arsenic-containing organic wastewater |
| CN113275037A (en) * | 2021-05-31 | 2021-08-20 | 华中科技大学 | Method for treating organic solvent by heterogeneous Fenton-like method |
| CN113683177A (en) * | 2021-07-21 | 2021-11-23 | 浙江工业大学 | Water treatment method for removing diclofenac from water by catalyzing zero-valent zinc with cobaltosic oxide, cobalt hydroxide or nickel hydroxide |
| CN113683177B (en) * | 2021-07-21 | 2022-12-27 | 浙江工业大学 | Water treatment method for removing diclofenac from water by catalyzing zero-valent zinc with cobaltosic oxide, cobalt hydroxide or nickel hydroxide |
| CN114477418A (en) * | 2022-01-29 | 2022-05-13 | 哈尔滨工业大学 | Method for removing organic pollutants in water by zero-valent iron reinforced hypochlorite |
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Application publication date: 20141224 |