CN105621587A - Method for degrading chloro-nitroaromatic by using sulfate radicals - Google Patents
Method for degrading chloro-nitroaromatic by using sulfate radicals Download PDFInfo
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- CN105621587A CN105621587A CN201610081522.8A CN201610081522A CN105621587A CN 105621587 A CN105621587 A CN 105621587A CN 201610081522 A CN201610081522 A CN 201610081522A CN 105621587 A CN105621587 A CN 105621587A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
Abstract
The invention relates to a method for degrading chloro-nitroaromatic by using sulfate radicals. Single persulfate and/or persulfate and an accelerator are added into water containing chloro-nitroaromatic for degrading; the accelerator is chosen from a group consisting of one or more of citronellal, citral, perillaldehyde, hemigossypol, acanthospermal, isodonal, gypsogenin, vanillin, cinnamyl aldehyde, magnal-dehyde, americanin A, paridifomoside, vincristine, glucurolactone, houttuynin, and helicid or phytone. The method is simple to perform, needs no additional treatment equipment, is widely applicable and has low requirement on reaction temperature; a green pollution-free natural plant extract is used as an accelerator, reducing environmental pollution.
Description
Technical field
The invention belongs to treatment of Organic Wastewater field, be specifically related to a kind of method utilizing potentiometric titrations degradating chloro nitro-aromatic.
Background technology
High-level oxidation technology be a kind of utilize in reaction produce strong oxidizing property active specy (such as hydroxyl radical free radical and potentiometric titrations) come oxidation Decomposition and the control techniques of mineralising Organic substance in water and reaction intermediate thereof, become one of important further treatment technique of guarantee drinking water safety, particularly after toxicological analysis method is applied to the safety evaluatio of drinking water.
Due to potentiometric titrations efficiently removing and high selectivity persistent organic pollutants, compared with wide variety of hydroxyl radical free radical (redox potential 1.8��2.7v) in tradition high-level oxidation technology, potentiometric titrations has higher redox potential (2.5��3.1). Compared to hydroxyl radical free radical, pollutant are all had good degradation effect by potentiometric titrations within the scope of wider pH. Persulfate high-level oxidation technology has that oxidant itself is stablized, the potentiometric titrations oxidability that produces is strong, by pH affect little, oxidant utilization is high and the advantage such as nontoxic.
Persulfate is used to produce the modal predecessor of potentiometric titrations, its final reacting product sulfate ion that has been nontoxic. Persulfate microwave, heat, radiation, alkali, (nanometer) transition metal (ion or oxide) activation under all can produce potentiometric titrations. But, the problem of the existing technology existence condition harsh (high temperature, microwave, radiation) that these promote persulfate to produce potentiometric titrations or toxic metals residual.
Chinese invention patent (publication number CN101973622A) discloses a kind of method promoting single persulfate, persulfate to produce potentiometric titrations. The invention provides the method promoting single persulfate, persulfate to produce potentiometric titrations. Accelerator uses as follows to add in processed water body and is promoted medicament and single persulfate, persulfate system accelerator, then uniform stirring reaction. Described accelerator ascorbic acid, sodium sulfite, oxammonium hydrochloride., oxammonium sulfate., O-ring hydroxypropyl methyl azanol, potassium permanganate, ammonium chloride and citric acid etc. But because of own poisonous, the accelerator in this technical scheme such as ascorbic acid, hydroxylamines, ammonium chloride etc. maybe can cause that breeding is accelerated in microorganism, environment can be caused secondary pollution in use, also need the residual of accelerator is done further process after using, thus causing the lifting of cost. Therefore the bottleneck of persulfate high-level oxidation technology development at present is in that single persulfate and the persulfate accelerator of research and development green.
Summary of the invention
Present invention aims to the deficiencies in the prior art, it is provided that a kind of method utilizing potentiometric titrations degradating chloro nitro-aromatic, use the natural plant extracts of green non-pollution as accelerator, reduce the pollution to environment.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of method utilizing potentiometric titrations degradating chloro nitro-aromatic, joins in the water body containing chloro nitro-aromatic degrade single persulfate and/or persulfate and accelerator; One or more in citronellal, citral, perillaldehyde, hemigossypol, acanthospermal A, isodonal, Gypsogenin, vanillin, cinnamic aldehyde, Cortex Magnoliae Officinalis aldehyde, ocean phytolaccanine A, Rhizoma Paridis Herba lysimachiae capillipedis saponin, vincristine, glucurolactone, houttuynine sodium bisulfite, helicide or phytol ketone of described accelerator.
In technique scheme, by accelerator, single persulfate and/or persulfate are carried out activation processing so that single persulfate and/or persulfate produce potentiometric titrations, potentiometric titrations be a kind of to electron withdraw group (such as NO2 -And Cl-) there is selective strong oxidizing property free radical, there is rapid dechlorination and de-nitroso reaction in it, the disconnection of aromatic ring oxidation subsequently becomes organic molecule, and these little molecule further mineralisings are carbon dioxide and water with chloro nitro-aromatic; Secondly, selected accelerator, for the natural plant extracts of green non-pollution, when degradating chloro nitro-aromatic chlorinated organics, secondary pollution will not be produced, and method simply need not increase extra process equipment, applied widely, reaction temperature is required low.
As preferably, described chloro nitro-aromatic is selected from 2-chloronitrobenzene, 3-chloronitrobenzene, 4-chloronitrobenzene, the chloro-3-nitrophenol of 2-, the chloro-4-nitrophenol of 2-, the chloro-5-nitrophenol of 2-, the chloro-6-nitrophenol of 2-, 2-nitro-3-chlorophenol, 2-nitro-4-chlorophenol, 2-nitro-5-chlorophenol, 2-nitro-6-chlorophenol, the chloro-3-nitroaniline of 2-, the chloro-4-nitroaniline of 2-, the chloro-5-nitroaniline of 2-, the chloro-6-nitroaniline of 2-, 2-nitro-3-chloroaniline, 2-nitro-4-chloroaniline, 2-nitro-5-chloroaniline, 2-nitro-6-chloroaniline, the chloro-3-nitrobenzoic acid of 2-, the chloro-4-nitrobenzoic acid of 2-, 2-chloro-5-nitrobenzoic acid, the chloro-6-nitrobenzoic acid of 2-, 2-nitro-3-chlorobenzoic acid, 2-nitro-4-chlorobenzoic acid, 2-nitro-5-chlorobenzoic acid, 2-nitro-6-chlorobenzoic acid, 2,3-dinitrochlorobenzene, 1-CHLORO-2,4-DINITROBENZENE, 2,5-dinitrochlorobenzene, 2,6-dinitrochlorobenzene, 3,4-dinitrochlorobenzene, 2,3 dichloro nitro benzene, 2,4-dichloronitrobenzene, 2,5-dichloronitrobenzene, 2,6-dichloronitrobenzene, 3,4-dichloronitrobenzene, 2,3-dinitro-chlorine phenol, 1-CHLORO-2,4-DINITROBENZENE phenol, 2,5-dinitro-chlorine phenol, 2,6-dinitro-chlorine phenol, 3,4-dinitro-chlorine phenol, 2,3 dichloro nitro benzene phenol, 2,4-dichloronitrobenzene phenol, 2,5-dichloronitrobenzene phenol, 2,6-dichloronitrobenzene phenol, 3,4-dichloronitrobenzene phenol, 2,3-dinitro-chlorine aniline, 1-CHLORO-2,4-DINITROBENZENE amine, 2,5-dinitro-chlorine aniline, 2,6-dinitro-chlorine aniline, 3,4-dinitro-chlorine aniline, 2,3 dichloro nitro benzene amine, 2,4-Dichloran, 2,5-Dichloran, 2,6-Dichloran, 3,4-Dichloran, 2,3-dinitro-chlorine benzoic acid, 1-CHLORO-2,4-DINITROBENZENE formic acid, 2,5-dinitro-chlorine benzoic acid, 2,6-dinitro-chlorine benzoic acid, 3,4-dinitro-chlorine benzoic acid, 2,3 dichloro nitro benzene formic acid, 2,4-dichloronitrobenzene formic acid, 2,5-dichloronitrobenzene formic acid, at least one in 2,6-dichloronitrobenzene formic acid and 3,4-dichloronitrobenzene formic acid.
Owing to single persulfate and/or persulfate produce potentiometric titrations, and chloro nitro-aromatic contains cl radical and nitro, this method can quickly remove the chloro nitro-aromatic in water body, and the chlorine of more than 90% and nitro transfer harmless inorganic chlorine ion and nitrate ion to.
As preferably, in described water body, the mol ratio of single persulfate and/or persulfate and accelerator is 1:0.005��0.05. Above-mentioned molar ratio range, the degraded of the concentration of produced potentiometric titrations more easily chloro nitro-aromatic, improves degradation effect. As it is preferred that, in described water body, the mol ratio of single persulfate and/or persulfate and accelerator is 1:0.0075��0.04.
As preferably, in described water body, chloro nitro-aromatic is 0.01��1:1 with the mol ratio of accelerator. During above-mentioned molar ratio range, degradating chloro nitro-aromatic 240min, clearance reaches more than 70%. More preferably, mol ratio is 0.05��0.3:1.
As preferably, described single persulfate is Potassium peroxysulfate, single sodium peroxydisulfate, single Ammonium persulfate. or single persulfuric acid calcium. Above-mentioned single persulfate is prone to produce potentiometric titrations, and reaction condition need not be very harsh.
As preferably, described persulfate is potassium peroxydisulfate, sodium peroxydisulfate, Ammonium persulfate. or persulfuric acid calcium. Above-mentioned persulfate is prone to produce potentiometric titrations, and reaction condition need not be very harsh.
As preferably, described water pH value is 5��13. As preferably, the temperature range of described water body is 4��50 DEG C. Owing to the natural plant extracts of use green non-pollution is as accelerator, when the single persulfate of activation and/or persulfate, required reaction condition is required low.
As preferably, described degradation process carrying out aeration simultaneously. During aeration can the oxygen that generates of stripping reaction, improve removal efficiency, > the strengthening rate of 5%.
As preferably, when the organic content of background is more than 6mg/L in described water body, adopting vacuum UV lamp pretreatment 3��5 minutes; The organic content of described background is in Organic Carbon TOC, and unit is mg/L. Background Organic substance is other the organic general name dechlorinated for existing in the outer water of nitro-aromatic and accelerator. The preferred 50W vacuum UV lamp of vacuum UV lamp. After vacuum UV lamp processes, water body TOC can reduce by 30��50%.
Compared with the existing technology, beneficial effects of the present invention is embodied in:
(1) method utilizing potentiometric titrations degradating chloro nitro-aromatic is simple, it is not necessary to increase extra process equipment, applied widely, requires low to reaction temperature.
(2) accelerator in degradating chloro nitro-aromatic method uses the natural plant extracts of green non-pollution, and dosage is low, is dissolved in after water person poultry safety, environmentally safe, it is not necessary to additionally arrange removal technique.
Accompanying drawing explanation
Chloro nitro aromatic compound degradation effect comparison diagram when Fig. 1 is that in embodiment 1,2,3,4,5,6 and 7, the response time is 4h;
Fig. 2 is 4-chloronitrobenzene degradation effect comparison diagram in embodiment 1,8,9,10 and 11;
Fig. 3 is 4-chloronitrobenzene degradation effect comparison diagram in embodiment 1,12,13,14 and 15.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1
(the organic concentration of background is 2.5mg/l to take the water body 500ml containing 30 ��Ms of 4-chloronitrobenzenes, in TOC), then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is alkalescence 7.4, the temperature of water body is 21 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of 4-chloronitrobenzene in water body in the reaction, result is as shown in Figure 1.
Embodiment 2
(the organic concentration of background is 2.5mg/l to take the water body 500ml containing 10 ��Ms of 4-chloronitrobenzenes, in TOC), then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.08:1), the pH of water body is alkalescence 7.4, the temperature of water body is 21 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of 4-chloronitrobenzene in water body in the reaction, result is as shown in Figure 1.
Embodiment 3
(the organic concentration of background is 2.5mg/l to take the water body 500ml containing 7.5 ��Ms of 4-chloronitrobenzenes, in TOC), then in water body, 2 mMs of Potassium peroxysulfates and 0.02 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.04mM in solution, molar concentration rate is 1:0.01, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is alkalescence 7.4, the temperature of water body is 21 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of 4-chloronitrobenzene in water body in the reaction, result is as shown in Figure 1.
Embodiment 4
(the organic concentration of background is 2.5mg/l to take the water body 500ml containing 30 ��Ms of 2-chloro-4-nitroanilines, in TOC), then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is alkalescence 7.4, the temperature of water body is 21 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of the chloro-4-nitroaniline of 2-in water body in the reaction, result is as shown in Figure 1.
Embodiment 5
(the organic concentration of background is 2.5mg/l to take the water body 500ml containing 30 ��Ms of 2-nitro-4-chlorobenzoic acids, in TOC), then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is alkalescence 7.4, the temperature of water body is 21 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of 2-nitro-4-chlorobenzoic acid in water body in the reaction, result is as shown in Figure 1.
Embodiment 6
(the organic concentration of background is 2.5mg/l to take the water body 500ml containing 30 ��Ms of 2-nitro-4-chlorophenols, in TOC), then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is alkalescence 7.4, the temperature of water body is 21 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of 2-nitro-4-chlorophenol in water body in the reaction, result is as shown in Figure 1.
Embodiment 7
(the organic concentration of background is 2.5mg/l to take the water body 500ml containing 30 ��Ms of 4-chloronitrobenzenes, in TOC), then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is alkalescence 7.4, the temperature of water body is 21 DEG C, course of reaction passes into high pure nitrogen with the flow velocity of 0.1L/min in solution, then uniform stirring reaction 4h, and each hour measures the concentration of 4-chloronitrobenzene in water body in the reaction, result is as shown in Figure 1.
Embodiment 8
(the organic concentration of background is 8.0mg/l to take the water body 500ml containing 30 ��Ms of 4-chloronitrobenzenes, in TOC), then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is alkalescence 7.4, the temperature of water body is 21 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of 4-chloronitrobenzene in water body in the reaction, result is as shown in Figure 2.
Embodiment 9
(the organic concentration of background is 15mg/l to take the water body 500ml containing 30 ��Ms of 4-chloronitrobenzenes, in TOC), then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is alkalescence 7.4, the temperature of water body is 21 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of 4-chloronitrobenzene in water body in the reaction, result is as shown in Figure 2.
Embodiment 10
(the organic concentration of background is 8.0mg/l to take the water body 500ml containing 30 ��Ms of 4-chloronitrobenzenes, in TOC), immediately with 50W vacuum UV lamp pretreatment 3 minutes, then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is alkalescence 7.4, the temperature of water body is 21 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of 4-chloronitrobenzene in water body in the reaction, result is as shown in Figure 2.
Embodiment 11
(the organic concentration of background is 15mg/l to take the water body 500ml containing 30 ��Ms of 4-chloronitrobenzenes, in TOC), immediately with 50W vacuum UV lamp pretreatment 5 minutes, then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is alkalescence 7.4, the temperature of water body is 21 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of 4-chloronitrobenzene in water body in the reaction, result is as shown in Figure 2.
Embodiment 12
(the organic concentration of background is 2.5mg/l to take the water body 500ml containing 30 ��Ms of 4-chloronitrobenzenes, in TOC), then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is faintly acid 5.0, the temperature of water body is 21 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of 4-chloronitrobenzene in water body in the reaction, result is as shown in Figure 3.
Embodiment 13
(the organic concentration of background is 2.5mg/l to take the water body 500ml containing 30 ��Ms of 4-chloronitrobenzenes, in TOC), then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is 13, the temperature of water body is 21 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of 4-chloronitrobenzene in water body in the reaction, result is as shown in Figure 3.
Embodiment 14
(the organic concentration of background is 2.5mg/l to take the water body 500ml containing 30 ��Ms of 4-chloronitrobenzenes, in TOC), then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is 7.4, the temperature of water body is 4 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of 4-chloronitrobenzene in water body in the reaction, result is as shown in Figure 3.
Embodiment 15
(the organic concentration of background is 2.5mg/l to take the water body 500ml containing 30 ��Ms of 4-chloronitrobenzenes, in TOC), then in water body, 2 mMs of Potassium peroxysulfates and 0.06 mM of accelerator perillaldehyde are added (now, the concentration of Potassium peroxysulfate and accelerator perillaldehyde respectively 4mM and 0.12mM in solution, molar concentration rate is 1:0.03, the molar concentration rate of 4-chlorobenzene Nitrobenzol and accelerator is 0.25:1), the pH of water body is 7.4, the temperature of water body is 40 DEG C, then uniform stirring reaction 4h, and each hour measures the concentration of 4-chloronitrobenzene in water body in the reaction, result is as shown in Figure 3.
Embodiment 16
As different from Example 2, what accelerator adopted is citronellal, and other step is identical with embodiment 2 with parameter.
Embodiment 17
As different from Example 2, what accelerator adopted is citral, and other step is identical with embodiment 2 with parameter.
Embodiment 18
As different from Example 2, what accelerator adopted is hemigossypol, and other step is identical with embodiment 2 with parameter.
Embodiment 19
As different from Example 2, what accelerator adopted is hemigossypol, and other step is identical with embodiment 2 with parameter.
Embodiment 20
As different from Example 2, what accelerator adopted is acanthospermal A, and other step is identical with embodiment 2 with parameter.
Embodiment 21
As different from Example 2, what accelerator adopted is isodonal, and other step is identical with embodiment 2 with parameter.
Embodiment 22
As different from Example 2, what accelerator adopted is Gypsogenin, and other step is identical with embodiment 2 with parameter.
Embodiment 23
As different from Example 2, what accelerator adopted is vanillin, and other step is identical with embodiment 2 with parameter.
Embodiment 24
As different from Example 2, what accelerator adopted is cinnamic aldehyde, and other step is identical with embodiment 2 with parameter.
Embodiment 25
As different from Example 2, what accelerator adopted is Cortex Magnoliae Officinalis aldehyde, and other step is identical with embodiment 2 with parameter.
Embodiment 26
As different from Example 2, what accelerator adopted is that ocean phytolaccanine A, other step and parameter are identical with embodiment 2.
Embodiment 27
As different from Example 2, what accelerator adopted is that Rhizoma Paridis Herba lysimachiae capillipedis saponin, other step and parameter are identical with embodiment 2.
Embodiment 28
As different from Example 2, what accelerator adopted is that Rhizoma Paridis Herba lysimachiae capillipedis saponin, other step and parameter are identical with embodiment 2.
Embodiment 29
As different from Example 2, what accelerator adopted is vincristine, and other step is identical with embodiment 2 with parameter.
Embodiment 30
As different from Example 2, what accelerator adopted is glucurolactone, and other step is identical with embodiment 2 with parameter.
Embodiment 31
As different from Example 2, what accelerator adopted is houttuynine sodium bisulfite, and other step is identical with embodiment 2 with parameter.
Embodiment 32
As different from Example 2, what accelerator adopted is helicide, and other step is identical with embodiment 2 with parameter.
Embodiment 33
As different from Example 2, what accelerator adopted is phytol ketone, and other step is identical with embodiment 2 with parameter.
The clearance of 4-chloronitrobenzene in embodiment 16��33 degraded water body, result is as shown in table 1.
Table 1
Claims (10)
1. the method utilizing potentiometric titrations degradating chloro nitro-aromatic, it is characterised in that single persulfate and/or persulfate and accelerator are joined in the water body containing chloro nitro-aromatic and degrade; One or more in citronellal, citral, perillaldehyde, hemigossypol, acanthospermal A, isodonal, Gypsogenin, vanillin, cinnamic aldehyde, Cortex Magnoliae Officinalis aldehyde, ocean phytolaccanine A, Rhizoma Paridis Herba lysimachiae capillipedis saponin, vincristine, glucurolactone, houttuynine sodium bisulfite, helicide or phytol ketone of described accelerator.
2. the method utilizing potentiometric titrations degradating chloro nitro-aromatic according to claim 1, it is characterised in that described chloro nitro-aromatic is selected from 2-chloronitrobenzene, 3-chloronitrobenzene, 4-chloronitrobenzene, the chloro-3-nitrophenol of 2-, the chloro-4-nitrophenol of 2-, the chloro-5-nitrophenol of 2-, the chloro-6-nitrophenol of 2-, 2-nitro-3-chlorophenol, 2-nitro-4-chlorophenol, 2-nitro-5-chlorophenol, 2-nitro-6-chlorophenol, the chloro-3-nitroaniline of 2-, the chloro-4-nitroaniline of 2-, the chloro-5-nitroaniline of 2-, the chloro-6-nitroaniline of 2-, 2-nitro-3-chloroaniline, 2-nitro-4-chloroaniline, 2-nitro-5-chloroaniline, 2-nitro-6-chloroaniline, the chloro-3-nitrobenzoic acid of 2-, the chloro-4-nitrobenzoic acid of 2-, 2-chloro-5-nitrobenzoic acid, the chloro-6-nitrobenzoic acid of 2-, 2-nitro-3-chlorobenzoic acid, 2-nitro-4-chlorobenzoic acid, 2-nitro-5-chlorobenzoic acid, 2-nitro-6-chlorobenzoic acid, 2,3-dinitrochlorobenzene, 1-CHLORO-2,4-DINITROBENZENE, 2,5-dinitrochlorobenzene, 2,6-dinitrochlorobenzene, 3,4-dinitrochlorobenzene, 2,3 dichloro nitro benzene, 2,4-dichloronitrobenzene, 2,5-dichloronitrobenzene, 2,6-dichloronitrobenzene, 3,4-dichloronitrobenzene, 2,3-dinitro-chlorine phenol, 1-CHLORO-2,4-DINITROBENZENE phenol, 2,5-dinitro-chlorine phenol, 2,6-dinitro-chlorine phenol, 3,4-dinitro-chlorine phenol, 2,3 dichloro nitro benzene phenol, 2,4-dichloronitrobenzene phenol, 2,5-dichloronitrobenzene phenol, 2,6-dichloronitrobenzene phenol, 3,4-dichloronitrobenzene phenol, 2,3-dinitro-chlorine aniline, 1-CHLORO-2,4-DINITROBENZENE amine, 2,5-dinitro-chlorine aniline, 2,6-dinitro-chlorine aniline, 3,4-dinitro-chlorine aniline, 2,3 dichloro nitro benzene amine, 2,4-Dichloran, 2,5-Dichloran, 2,6-Dichloran, 3,4-Dichloran, 2,3-dinitro-chlorine benzoic acid, 1-CHLORO-2,4-DINITROBENZENE formic acid, 2,5-dinitro-chlorine benzoic acid, 2,6-dinitro-chlorine benzoic acid, 3,4-dinitro-chlorine benzoic acid, 2,3 dichloro nitro benzene formic acid, 2,4-dichloronitrobenzene formic acid, 2,5-dichloronitrobenzene formic acid, at least one in 2,6-dichloronitrobenzene formic acid and 3,4-dichloronitrobenzene formic acid.
3. the method utilizing potentiometric titrations degradating chloro nitro-aromatic according to claim 1 and 2, it is characterised in that in described water body, the mol ratio of single persulfate and/or persulfate and accelerator is 1:0.005��0.05.
4. the method utilizing potentiometric titrations degradating chloro nitro-aromatic according to claim 3, it is characterised in that in described water body, chloro nitro-aromatic is 0.01��1:1 with the mol ratio of accelerator.
5. the method utilizing potentiometric titrations degradating chloro nitro-aromatic according to claim 1, it is characterised in that described single persulfate is Potassium peroxysulfate, single sodium peroxydisulfate, single Ammonium persulfate. or single persulfuric acid calcium.
6. the method utilizing potentiometric titrations degradating chloro nitro-aromatic according to claim 1, it is characterised in that described persulfate is potassium peroxydisulfate, sodium peroxydisulfate, Ammonium persulfate. or persulfuric acid calcium.
7. the method utilizing potentiometric titrations degradating chloro nitro-aromatic according to claim 1, it is characterised in that described water pH value is 5��13.
8. the method utilizing potentiometric titrations degradating chloro nitro-aromatic according to claim 1 or 7, it is characterised in that the temperature range of described water body is 4��50 DEG C.
9. the method utilizing potentiometric titrations degradating chloro nitro-aromatic according to claim 1, it is characterised in that simultaneously carry out aeration in described degradation process.
10. the method utilizing potentiometric titrations degradating chloro nitro-aromatic according to claim 1, it is characterized in that, when the organic content of background is more than 6mg/L in described water body, adopting vacuum UV lamp pretreatment 3��5 minutes, the organic content of described background is in Organic Carbon TOC.
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