CN105060392A - Method for removing alga in water by ultraviolet light activated oxidizing agent - Google Patents

Method for removing alga in water by ultraviolet light activated oxidizing agent Download PDF

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Publication number
CN105060392A
CN105060392A CN201510472165.3A CN201510472165A CN105060392A CN 105060392 A CN105060392 A CN 105060392A CN 201510472165 A CN201510472165 A CN 201510472165A CN 105060392 A CN105060392 A CN 105060392A
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algae
water
oxygenant
alga
employing
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Chinese (zh)
Inventor
黎雷
赵来财
郭海成
李建峰
贺玲
董子萱
郭婧轩
张均
刘建伟
王帅锋
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Tongji University
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Tongji University
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Abstract

The invention discloses a method for removing alga in water by an ultraviolet light activated oxidizing agent. The method comprises that an oxidizing agent solution is added into water containing alga, the mixture solution undergoes a reaction under ultraviolet light irradiation, the reaction product is analyzed so that alga activity and residual chlorophyll and alga metabolite values are obtained, and according to the above values, a water alga removal degree is determined. The alga is Pseudoanabaena sp. The oxidizing agent comprises persulfate and peroxymonosulfate. The ultraviolet light irradiation intensity is in a range of 103-410mj/cm<2>. The method is environmentally friendly and does not produce secondary pollution. According to the method, under ultraviolet light irradiation, the reagent is put in water needing alga removal and odor removal, good effects are obtained at a normal temperature, and other devices are avoided. The method has simple processes and storage and transport easiness and can be used for removing alga and degrading substances with odor.

Description

A kind of method adopting the oxygenant of UV-activated to remove algae in water
Technical field
The invention belongs to field of water treatment technology application, relate to a kind of method removing suspended substance in water, particularly relate to a kind of method removing algae.
Background technology
In recent ten years, China's poisons in freshwater eutrophic state is day by day serious, causes the algal bloom in many rivers and lake.The amount reproduction of algae, can cause water quality to degenerate, and distributes and make us unjoyful stink or other smell substances, also can discharge the objectionable impuritiess such as Algae toxins when algae is dead.The amount reproduction of algae not only have impact on hydrobiological existence, and has had a strong impact on production and the life of the mankind.
The common oxygenant of current water supply process mainly contains ozone, chlorine, potassium permanganate.Prechlorination can kill algae, makes it be easy to be removed in subsequent treatment process, but can produce other disinfection byproduct (DBP); The clearance of ozone to algae is high, but investment is large, and working cost is high; Potassium permanganate has good algae killing effect, but potassium permanganate has heavier color, adds the colourity of rear easy increase water outlet, in addition, is also noted that whether manganese can exceed standard.
High-level oxidation technology is that a class can efficiently thoroughly be degraded the emerging technology of difficult organic pollutant.Because the intermediate product of the extremely strong oxidisability generated in advanced oxidation system is remarkable to the degradation effect of organic difficult scission of link pollutent, be thus applied in the middle of water technology more and more widely.But, report or the patent of the Taste and odor compounds of algae and its metabolism of degrading not yet is removed so far with ultraviolet catalytic persulphate.The domestic certain methods had about other materials of degrading with persulphate, as: CN102259993A discloses the method using different sorts complexing agent complexes ferrous catalysis persulphate degradation of organic waste water, and CN103818993A discloses the method for a kind of ferrous salt activation persulphate or single peroxosulphuric hydrogen salt advanced oxidation Papermaking Wastewater Advanced Treatment.Also have some methods with other remove Taste and odor compounds in water as: CN103121732A discloses the method removed Taste and odor compounds in water, and this method is that photoactivation and ultra-filtration membrane combine removal Taste and odor compounds; CN102092899A discloses and a kind ofly to remove in micro-polluted water natural organic matter and cause the system and method smelling material, but this method uses aeration bio-filtering tower and ultra-filtration membrane.CN103553247A discloses a kind of inoganic solids peroxide-induced persulphate that utilizes and produces the water treatment method of singlet oxygen except algae, has no it and studies Taste and odor compounds.
Summary of the invention
The object of this invention is to provide a kind of method adopting the oxygenant of UV-activated to remove algae in water, have removal efficiency high, produce without new pollution substance, suitability is strong, and treatment condition are easier to a series of features such as reaching.
In order to achieve the above object, the technical solution used in the present invention is as follows:
A kind of method adopting the oxygenant of UV-activated to remove algae in water, comprise the following steps: to containing the solution adding oxygenant in the water of algae, react under ultraviolet irradiation condition, carry out the value analyzing the activity, remaining chlorophyll and the algae meta-bolites that obtain algae after reaction, judge the degree of algae removal in water with this.
Described algae is Pseudanabaena sp (Pseudoanabaenasp.).
The density of the described water containing algae is 1.4 × 10 7~ 1.9 × 10 7cell/L.
The concentration of the described water Determination of Chlorophyll containing algae is 1 ~ 10ug/L.
Described is 0 ~ 0.4 containing the activity of algae in the water of algae.
The concentration of described oxygenant is 0.1 × 10 -3~ 5 × 10 -3mol/L.(the oxygenant original solution of preparation is 100mM, the concentration of algae liquid dilution gained when previous reaction concentration is reaction)
The volume of the solution of described oxygenant is 1:19 ~ 1:999 with the ratio of the volume of the described water containing algae.
Described oxygenant is persulphate and single peroxosulphuric hydrogen salt.
Described persulphate is Sodium Persulfate or Potassium Persulphate.
Described single peroxosulphuric hydrogen salt is potassium hydrogen peroxymonosulfate.
The time of described reaction is 1 ~ 120min.
The irradiation intensity of described ultraviolet lighting is 103mj/cm 2~ 410mj/cm 2.
Owing to have employed technique scheme, the present invention has the following advantages and beneficial effect:
Method of the present invention, while the Taste and odor compounds except algae and its metabolism of degrading, can play sterilization and other organic effects of degrading.
Method of the present invention irradiating ultraviolet light in water, catalysis persulphate or single peroxosulphuric hydrogen salt produce potentiometric titrations, the Taste and odor compounds of algae and its metabolism of degrading is removed with the potentiometric titrations with advanced oxidation ability, good degrading effect, removal efficiency is high and do not have new pollution substance to produce.
Method of the present invention under normal temperature condition, and gets final product the Taste and odor compounds of efficient algae removal and its metabolism of degrading when not needing to add other activators.
In method of the present invention persulphate or single peroxosulphuric hydrogen salt character all more stable, be easy to store and transport and use; UV-irradiation is simple to operate, is easy to promote in actual applications and use.
Method environmental friendliness of the present invention, secondary pollution can not be produced, under the irradiation of UV-light, need except algae and the water body smelling taste of degrading as long as reagent is dropped into, just good effect can be reached at normal temperatures, without the need to dropping into other equipment, simple to operate, easy storage transport, may be used for except algae and degraded Taste and odor compounds.
Accompanying drawing explanation
When Fig. 1 is algae substances in the oxygenant removal water of embodiment of the present invention employing UV-activated, algae cell activity and chlorophyll concentration graphic representation over time.
Fig. 2 is the effect schematic diagram of the 2-MIB of embodiment of the present invention degraded algae metabolism.Wherein C represents residual concentration (ng/L), C 0represent starting point concentration (ng/L), its ordinate zou is the ratio of residual concentration and starting point concentration, reacts degradation effect with this.
Fig. 3 is the typical curve being used for measuring 2-MIB that embodiment of the present invention marker method makes.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the present invention is further detailed explanation.
Average degradation effect in following form is the average result of three parallel tests.
Embodiment 1
Adopt the oxygenant of UV-activated to remove a method for algae substances in water, comprise the following steps:
The algae liquid of diluting high-concentration makes algae activity be 0.35, and algae is Pseudanabaena sp (Pseudoanabaenasp.), and algae density is 1.4 × 10 7cell/L, chlorophyll concentration value (chl-a) is 1ug/L, with diluted algae liquid as reaction solution.In the algae liquid of reaction, add Sodium Persulfate solution makes its concentration be 1mM, and carry out under ultraviolet condition, the irradiation intensity of ultraviolet lighting is 410mj/cm 2react under normal temperature, respectively in its active and chlorophyll concentration value of different time measurements, as shown in Figure 1, when Fig. 1 is algae substances in the oxygenant removal water of embodiment of the present invention employing UV-activated, algae cell activity and chlorophyll concentration graphic representation over time.As can be seen from Figure 1, the method just made algae lose activity within 30 minutes, the also increase in time and slowly oxidized of its chlorophyll.
The content of the 2-MIB of reaction algae liquid is measured respectively at Different periods, as shown in Figure 2, Fig. 2 is the effect schematic diagram of the 2-MIB of embodiment of the present invention degraded algae metabolism, as can be seen from Figure 2, algae meta-bolites 2-methyl isoborneol (2-MIB) is with the increase in reaction times, and content reduces gradually.After reaction 120min, algae activity, remaining chlorophyll, the average degradation effect of 2-MIB are as shown in table 1.
Algae activity and chlorophyll concentration detect and use fluorescence chlorophyll detector (PAM) to measure; Algae density uses opticmicroscope to detect; The detection gas chromatograph-mass spectrometer (GC-MS:GasChromatography-MassSpectrometer) that algae meta-bolites smells taste 2-MIB is measured.(1) getting 6,3gNaCl and 0.2mL concentration is housed is that the 2-isobutyl--3-methoxyl group of 10ng/L is given a tongue-lashing piperazine (IBMP) ml headspace bottle compound concentration and is followed successively by 10, 20, 50, 100, 200, the 2-methyl isoborneol (2-MIB) of 500ng/L and ground depth (GSM), and measure with gas chromatograph-mass spectrometer (GC-MS:GasChromatography-MassSpectrometer), make typical curve, as shown in Figure 3, Fig. 3 is the typical curve being used for measuring 2-MIB that embodiment of the present invention marker method makes, its internal standard substance matter is that 2-isobutyl--3-methoxyl group gives a tongue-lashing piperazine (IBMP).X-coordinate is A 2-MIB/ A iBMPthe ratio of the peak area that to be this material measure at gas chromatograph-mass spectrometer (GC-MS:GasChromatography-MassSpectrometer) represented, the concentration of the 2-MIB of preparation that what its ordinate zou represented is, the fit equation of its data tendency chart recorded is y=1378.6x-16.077, and wherein linear coefficient is R 2=0.9991, measurement needs can be met.
Table 1
120min algae is active 0
120min remaining chlorophyll 0.07
The average degradation rate of 120min2-MIB 60%
Embodiment 2
The algae liquid of diluting high-concentration makes algae activity be 0.35, and algae is Pseudanabaena sp (Pseudoanabaenasp.), and algae density is 1.4 × 10 7cell/L, chlorophyll concentration value (chl-a) is 1ug/L, with diluted algae liquid as reaction solution.In the algae liquid of reaction, add Sodium Persulfate solution makes its concentration be 1mM, and carry out under ultraviolet condition, the irradiation intensity of ultraviolet lighting is 103mj/cm 2, react under normal temperature, respectively at its active and chlorophyll concentration value of different time measurements and remaining 2-MIB thereof.After reaction 120min, algae activity, remaining chlorophyll, the average degradation effect of 2-MIB are as shown in table 2.
Table 2
120min algae is active 0
120min remaining chlorophyll 0.13
The average degradation rate of 120min2-MIB 42%
Embodiment 3
The algae liquid of diluting high-concentration makes algae activity be 0.35, and algae is Pseudanabaena sp (Pseudoanabaenasp.), and algae density is 1.4 × 10 7cell/L, chlorophyll concentration value (chl-a) is 1ug/L, with diluted algae liquid as reaction solution.In the algae liquid of reaction, add Sodium Persulfate solution makes its concentration be 0.5mM, and carry out under ultraviolet condition, the irradiation intensity of ultraviolet lighting is 410mj/cm 2, react under normal temperature, respectively at its active and chlorophyll concentration value of different time measurements and remaining 2-MIB thereof.After reaction 120min, algae activity, remaining chlorophyll, the average degradation effect of 2-MIB are as shown in table 3.
Table 3
120min algae is active 0
120min remaining chlorophyll 0.11
The average degradation rate of 120min2-MIB 54%
Embodiment 4
The algae liquid of diluting high-concentration makes algae activity be 0.35, and algae is Pseudanabaena sp (Pseudoanabaenasp.), and algae density is 1.4 × 10 7cell/L, chlorophyll concentration value (chl-a) is 1ug/L, with diluted algae liquid as reaction solution.In the algae liquid of reaction, add Sodium Persulfate solution makes its concentration be 5mM, and carry out under ultraviolet condition, the irradiation intensity of ultraviolet lighting is 410mj/cm 2, react under normal temperature, respectively at its active and chlorophyll concentration value of different time measurements and remaining 2-MIB thereof.After reaction 120min, algae activity, remaining chlorophyll, the average degradation effect of 2-MIB are as shown in table 4.
Table 4
120min algae is active 0
120min remaining chlorophyll 0.01
The average degradation rate of 120min2-MIB 99%
Embodiment 5
The algae liquid of diluting high-concentration makes algae activity be 0.35, and algae is Pseudanabaena sp (Pseudoanabaenasp.), and algae density is 1.9 × 10 7cell/L, chlorophyll concentration value (chl-a) is 10ug/L, with diluted algae liquid as reaction solution.In the algae liquid of reaction, add Sodium Persulfate solution makes its concentration be 5mM, and carry out under ultraviolet condition, the irradiation intensity of ultraviolet lighting is 410mj/cm 2, react under normal temperature, respectively at its active and chlorophyll concentration value of different time measurements and remaining 2-MIB thereof.After reaction 120min, algae activity, remaining chlorophyll, the average degradation effect of 2-MIB are as shown in table 5.
Table 5
120min algae is active 0
120min remaining chlorophyll 0.07
The average degradation rate of 120min2-MIB 99%
Embodiment 6
The algae liquid of diluting high-concentration makes algae activity be 0.35, and algae is Pseudanabaena sp (Pseudoanabaenasp.), and algae density is 1.636 × 10 7cell/L, chlorophyll concentration value (chl-a) is 5ug/L, with diluted algae liquid as reaction solution.In the algae liquid of reaction, add Sodium Persulfate solution makes its concentration be 2mM, and carry out under ultraviolet condition, the irradiation intensity of ultraviolet lighting is 410mj/cm 2, react under normal temperature, respectively at its active and chlorophyll concentration value of different time measurements and remaining 2-MIB thereof.After reaction 120min, algae activity, remaining chlorophyll, the average degradation effect of 2-MIB are as shown in table 6.
Table 6
120min algae is active 0
120min remaining chlorophyll 0.10
The average degradation rate of 120min2-MIB 83%
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.

Claims (10)

1. adopt the oxygenant of UV-activated to remove a method for algae in water, it is characterized in that: comprise the following steps:
To containing the solution adding oxygenant in the water of algae, react under ultraviolet irradiation condition, carry out the value analyzing the activity, remaining chlorophyll and the algae meta-bolites that obtain algae after reaction, judge the degree of algae removal in water with this.
2. the method for algae in water removed by the oxygenant of employing UV-activated according to claim 1, it is characterized in that: described algae is Pseudanabaena sp.
3. the method for algae in water removed by the oxygenant of employing UV-activated according to claim 1, it is characterized in that: the density of the described water containing algae is 1.4 × 10 7~ 1.9 × 10 7cell/L.
4. the method for algae in water removed by the oxygenant of employing UV-activated according to claim 1, it is characterized in that: the concentration of the described water Determination of Chlorophyll containing algae is 1 ~ 10ug/L;
Preferably, described is 0 ~ 0.4 containing the activity of algae in the water of algae.
5. the method for algae in water removed by the oxygenant of employing UV-activated according to claim 1, it is characterized in that: the concentration of described oxygenant is 0.1 × 10 -3~ 5 × 10 -3mol/L.
6. the method for algae in water removed by the oxygenant of employing UV-activated according to claim 1, it is characterized in that: the volume of the solution of described oxygenant is 1:19 ~ 1:999 with the ratio of the volume of the described water containing algae.
7. the method for algae in water removed by the oxygenant of employing UV-activated according to claim 1, it is characterized in that: described oxygenant is persulphate and single peroxosulphuric hydrogen salt.
8. the method for algae in water removed by the oxygenant of employing UV-activated according to claim 7, it is characterized in that: described persulphate is Sodium Persulfate or Potassium Persulphate;
Preferably, described single peroxosulphuric hydrogen salt is potassium hydrogen peroxymonosulfate.
9. the method for algae in water removed by the oxygenant of employing UV-activated according to claim 1, it is characterized in that: the time of described reaction is 1 ~ 120min.
10. the method for algae in water removed by the oxygenant of employing UV-activated according to claim 1, it is characterized in that: the irradiation intensity of described ultraviolet lighting is 103mj/cm 2~ 410mj/cm 2.
CN201510472165.3A 2015-08-05 2015-08-05 Method for removing alga in water by ultraviolet light activated oxidizing agent Pending CN105060392A (en)

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CN107515254A (en) * 2016-06-15 2017-12-26 中国石油化工股份有限公司 A kind of method of phthalic acid ester content in reduction water
CN112345702A (en) * 2020-11-06 2021-02-09 四川清和科技有限公司 Method for rapidly testing algae removal effect of algaecide and determining using amount of algaecide

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN105540732A (en) * 2015-12-29 2016-05-04 清华大学深圳研究生院 Method for controlling algal toxin risk without damaging algae cells
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CN112345702A (en) * 2020-11-06 2021-02-09 四川清和科技有限公司 Method for rapidly testing algae removal effect of algaecide and determining using amount of algaecide

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