CN109019969A - A kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water - Google Patents
A kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water Download PDFInfo
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- CN109019969A CN109019969A CN201810962380.5A CN201810962380A CN109019969A CN 109019969 A CN109019969 A CN 109019969A CN 201810962380 A CN201810962380 A CN 201810962380A CN 109019969 A CN109019969 A CN 109019969A
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- waste water
- potassium hydrogen
- sulfide
- hydrogen persulfate
- degradation
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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
-
- 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
-
- 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
Abstract
Present invention relates particularly to the biodegrading process of organic wastewater.A kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water, which is characterized in that comprise the following steps that: step 1 takes 0.1~100000L waste water to be processed；Sulfide is added into waste water for step 2；The pH value of waste water is adjusted to 2-10 by step 3；Potassium hydrogen persulfate reagent is added into waste water for step 4.The present invention utilizes the sulfide with reproducibility to activate potassium hydrogen persulfate, the free radical with high oxidation potential is generated in activation process, organic pollutant in waste water can be oxidized to small organic molecule or carbon dioxide by free radical, to achieve the effect that handle waste water.
Description
Technical field
The present invention relates to technical field of chemistry, and in particular to the biodegrading process of organic wastewater.
Background technique
Currently, the problems such as water scarcity, water pollution is on the rise, contain the organic contamination of high concentration bio-refractory simultaneously
The organic wastewater discharge amount of object and ammonia nitrogen compound is doubled and redoubled with swift and violent speed.High concentrated organic wastewater has pollutant
The features such as content is high, toxicity is big, emission point disperses, water is few, complex treatment process, difficult investment and operating cost height and management,
And high-concentration industrial organic waste water be cause water body seriously pollute, the deterioration of the ecological environment, threat human health main pollution
Object is one of the difficult point in domestic and international environmentally friendly research field, its purified treatment has been to be concerned by more and more people.Tradition is advanced
Oxidation technology handles waste water, and as there is following problems for Fenton's reaction: 1) reaction system is more demanding to pH, can only be in strong acid
It is carried out under the conditions of property, the cost that will increase water treatment procedure is actually adjusted to the pH of waste water；2) in the circulation of iron ion
In a large amount of ferric iron can be detached from system in the form of iron cement, increase the difficulty of water process instead and be that subsequent processing brings difficulty
Topic；3) lower to the utilization rate of hydrogen peroxide in reaction system, the efficiency of degradation is not high enough.
Summary of the invention
The object of the present invention is to provide a kind of methods of sulfide activation potassium hydrogen persulfate degradation of organic waste water, solve
At least one above technical problem.
Technical problem solved by the invention can be realized using following technical scheme:
A kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water, which is characterized in that walked including following technique
It is rapid:
Step 1 takes 0.1~100000L waste water to be processed；
Sulfide is added into waste water for step 2；
The pH value of waste water is adjusted to 2-10 by step 3；
Potassium hydrogen persulfate reagent is added into waste water for step 4.
The present invention utilizes the sulfide with reproducibility to activate potassium hydrogen persulfate, and generating in activation process has high oxidation
Organic pollutant in waste water can be oxidized to small organic molecule or carbon dioxide by the free radical of potential, free radical, thus
Achieve the effect that handle waste water.
Concentration of the sulfide described in step 2 in waste water is 0.01-1000g/L.
Sulfide described in step 2 is MoS2、CoS2、WS2, CdS, CuS or NiS, preferably MoS2。
Above-mentioned sulfide has reproducibility, can play the role of activating potassium hydrogen persulfate degradable organic pollutant
Concentration of the potassium hydrogen persulfate in waste water is 0-0.5mmol/L in step 4.
The beneficial effects of the present invention are:
1) this biodegrading process can fast degradation organic pollutant in a short time, and it is also less using the amount of reagent；
2) sulfide and potassium hydrogen persulfate source are simple, are commercially available commercial reagents, and cheap；
3) applicable pH wider range, can play the role of degradation for the pollutant under different pH environment；
4) high concentration RhB pollutant unlimited for the type of organic pollutant such as coloured, colourless phenol or
Tetra-chloro-phenol can be decomposed using this method.
Detailed description of the invention
Fig. 1 is simple potassium hydrogen persulfate and the degradation of phenol in the case where molybdenum sulfide activates potassium hydrogen persulfate in the embodiment of the present invention one
Comparison diagram；
Fig. 2 is that molybdenum sulfide activates potassium hydrogen persulfate to the degradation comparison diagram of different pollutants in the embodiment of the present invention two；
Fig. 3 is pair that molybdenum sulfide activates potassium hydrogen persulfate degradation of phenol under different ph values in the embodiment of the present invention three
Than figure；
Fig. 4 is the circulation that neutrallty condition molybdenum sulfide activates potassium hydrogen persulfate degradation of contaminant phenol in the embodiment of the present invention four
Figure.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Closing specific embodiment and diagram, the present invention is further explained.
Referring to Fig.1, Fig. 2, Fig. 3, Fig. 4, a kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water, including with
Lower processing step: step 1 takes 0.1~100000L waste water to be processed；Step 2, sulfide to concentration, which is added, into waste water is
0.01-1000g/L；The pH value of waste water is adjusted to 2-10 by step 3；Potassium hydrogen persulfate reagent is added into waste water for step 4.
The present invention utilize with reproducibility sulfide activate potassium hydrogen persulfate, in activation process generate have high oxidation potential from
By base, the organic pollutant in waste water can be oxidized to small organic molecule or carbon dioxide by free radical, to reach processing
The effect of waste water.
Sulfide described in step 2 is MoS2、CoS2、WS2, CdS, CuS or NiS, preferably MoS2.Above-mentioned sulfide tool
There is reproducibility, can play the role of activating potassium hydrogen persulfate degradable organic pollutant.Potassium hydrogen persulfate is useless in step 4
Concentration in water is 0-0.5mmol/L.
Embodiment one: taking the waste water 10L to be processed containing phenol, and sulfide chooses MoS2, MoS2Concentration in waste water is
0.08g/L adjusts pH value to 2~10, and concentration of the potassium hydrogen persulfate in waste water is 0-0.5mmol/L.
As shown in Figure 1, under conditions of no sulfide, only 10% phenol is degraded experimental result；And identical
Under the conditions of be added sulfide make potassium hydrogen persulfate (PMS) activate after, phenol is degradable, and degradation rate significantly improves.
Embodiment two: taking the waste water 10L containing different type organic pollutant, and sulfide chooses MoS2, MoS2In waste water
Concentration be 0.08g/L, adjust pH value to 2~10, concentration of the potassium hydrogen persulfate in waste water is 0-0.5mmol/L.
Experimental result as shown in Fig. 2, degrade using rhodamine, phenol and tetra-chloro-phenol as target organic pollutant,
This method has preferable degradation effect.
Embodiment three: taking the waste water 10L to be processed containing phenol, and sulfide chooses MoS2, MoS2Concentration in waste water is
0.08g/L adjusts pH value to 3,4,5,7 respectively, and concentration of the potassium hydrogen persulfate in waste water is 0-0.5mmol/L.
For experimental result as shown in figure 3, under condition of different pH under condition of different pH, the degradation rate of phenol is all higher, says
Bright this method can not be limited by pH and be degraded to organic pollutant.
Example IV:
(1) waste water 10L to be processed is taken, MoS is added2Concentration is 0.08g/L, adjusts pH value to 7, PMS concentration 0.5mmol/
L；
(2) after experiment, molybdenum sulfide sample centrifugation recycling, washing alcohol washes alternating respectively three times, vacuum drying treatment；
(3) waste water 10L to be processed is separately taken, the molybdenum sulfide after last time drying is added adjusts pH value to 2~10, PMS concentration
0.5mmol/L；
(4) drying process is repeated, is repeated the experiment 5 times.,
For experimental result as shown in figure 4, molybdenum sulfide sample is after being recycled, each degradation efficiency all maintains 80% left side
The right side illustrates that the activation of the molybdenum sulfide sample is steady with the trend that the increase activation effect of cycle-index does not obviously weaken still
It is qualitative preferable.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variation and
Improvement is both fallen in the scope of protection of present invention.The scope of protection of present invention is by appended claims and its waits
Effect object defines.
Claims (10)
1. a kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water, which is characterized in that comprise the following steps that:
Step 1 takes 0.1~100000L waste water to be processed；
Sulfide is added into waste water for step 2；
The pH value of waste water is adjusted to 2-10 by step 3；
Potassium hydrogen persulfate reagent is added into waste water for step 4.
2. a kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water according to claim 1, feature exist
In: concentration of the sulfide described in step 2 in waste water is 0.01-1000g/L.
3. a kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water according to claim 1, feature exist
In: sulfide described in step 2 is MoS2、CoS2、WS2, CdS, CuS or NiS.
4. a kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water according to claim 1, feature exist
In: concentration of the potassium hydrogen persulfate in waste water is 0-0.5mmol/L in step 4.
5. a kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water according to claim 1, feature exist
In: the waste water in step 1 is the waste water containing any one in rhodamine, phenol, tetra-chloro-phenol.
6. a kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water according to claim 2 or 3, feature
Be: sulfide chooses MoS in step 22, MoS2Concentration in waste water is 0.08g/L.
7. a kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water according to claim 1, feature exist
In: the pH value of waste water is adjusted to 7 in step 3.
8. a kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water according to claim 4, feature exist
In: concentration of the potassium hydrogen persulfate in waste water is 0.5mmol/L in step 4.
9. a kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water according to claim 5, feature exist
In: the waste water 10L to be processed containing phenol is taken in step 1；
Sulfide chooses MoS in step 22, MoS2Concentration in waste water is 0.08g/L；
The pH value of waste water is adjusted to 2~10 in step 3；
Concentration of the potassium hydrogen persulfate in waste water is 0-0.5mmol/L in step 4.
10. a kind of method of sulfide activation potassium hydrogen persulfate degradation of organic waste water according to claim 5, feature exist
In: the waste water 10L to be processed containing phenol is taken in step 1；
Sulfide chooses MoS in step 22, MoS2Concentration in waste water is 0.08g/L；
The pH value of waste water is adjusted to any one value in 3,4,5 or 7 in step 3；
Concentration of the potassium hydrogen persulfate in waste water is 0-0.5mmol/L in step 4.
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Cited By (5)
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| CN109794266A (en) * | 2019-02-20 | 2019-05-24 | 清华大学 | A kind of inorganic catalytic membrane and its preparation method and application |
| CN110180564A (en) * | 2019-06-19 | 2019-08-30 | 清华大学 | A kind of molybdenum disulfide catalytic membrane and its preparation and application |
| CN110217875A (en) * | 2019-05-09 | 2019-09-10 | 中国科学院城市环境研究所 | Utilize stratiform MoS2Activate the method and application of persulfate removal butyl p-hydroxybenzoate |
| CN111362391A (en) * | 2020-02-25 | 2020-07-03 | 暨南大学 | Novel method for removing organic pollutants through piezoelectric effect activation Fenton-like reaction |
| CN111392845A (en) * | 2020-01-10 | 2020-07-10 | 中国科学院南京土壤研究所 | Composition for degrading organic pollutants as well as preparation method and application thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109794266A (en) * | 2019-02-20 | 2019-05-24 | 清华大学 | A kind of inorganic catalytic membrane and its preparation method and application |
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| CN110180564A (en) * | 2019-06-19 | 2019-08-30 | 清华大学 | A kind of molybdenum disulfide catalytic membrane and its preparation and application |
| CN111392845A (en) * | 2020-01-10 | 2020-07-10 | 中国科学院南京土壤研究所 | Composition for degrading organic pollutants as well as preparation method and application thereof |
| CN111362391A (en) * | 2020-02-25 | 2020-07-03 | 暨南大学 | Novel method for removing organic pollutants through piezoelectric effect activation Fenton-like reaction |
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Application publication date: 20181218 |