CN101585577A - Ozonization water treatment method of using Y-type zeolite as catalyst - Google Patents
Ozonization water treatment method of using Y-type zeolite as catalyst Download PDFInfo
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- CN101585577A CN101585577A CNA2009100321726A CN200910032172A CN101585577A CN 101585577 A CN101585577 A CN 101585577A CN A2009100321726 A CNA2009100321726 A CN A2009100321726A CN 200910032172 A CN200910032172 A CN 200910032172A CN 101585577 A CN101585577 A CN 101585577A
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Abstract
The invention uses Y-type zeolite as catalyst to provide a novel ozonization water treatment method. The added Y-type zeolite has obvious acceleration function to degradation of phenol in waste water containing phenols. The Y-type zeolite has characteristics of large surface, good dispersion, good stability, and has vast application prospect in ozonization water treatment.
Description
Technical field
Thereby the present invention proposes a kind of water treatment method that utilizes y-type zeolite as organic pollutant decontamination in catalyzer, the catalytic ozonation degradation water, belongs to environmental catalysis and water treatment field.
Background technology
The aromatics pollutent is a pollutent common in the trade effluent, is common starting material in the industries such as petrochemical complex, chemistry, pharmacy, has characteristics such as toxicity is big, difficult degradation.Recently, the research about the chemical degradation method of aromatics organic pollutant in the water has caused extensive concern.
Catalytic ozonation has important application prospects as convenient and practical high-level oxidation technology in water treatment.Catalytic ozonation can be divided into homogeneous catalysis and heterogeneous catalyst, and the former is the ion performance katalysis in the solution system, and the latter relies on solid catalyst surface performance katalysis.Compare with homogeneous catalysis, an advantage of heterogeneous catalyst is the secondary pollution of having avoided the dissolved ion to bring, because many metal ions also are that environment is deleterious.In order to improve ozonize efficient, people have developed multiple solid catalyst.Yet from angle of practical application, the heterogeneous catalyst material of efficient stable still is more rare, and the ozonize catalyzer of the active height of exploitation, stable performance is very important for the actual application value that improves catalytic ozonation.
Summary of the invention
Purpose of the present invention provides a kind of novel, stable catalysis ozone formed material and using method thereof, to improve the efficient and the practical value of catalytic ozonation.
The y-type zeolite material is the well-known porous material of a class, is widely used as sorbing material or support of the catalyst, yet is not applied in ozonization water treatment.Among the present invention, Y zeolite as the ozonize catalytic material, is studied its using method, obtained good effect.
Particular content of the present invention comprises:
(1) proposed a kind of ozonization water treatment method that utilizes y-type zeolite as catalyzer, it is characterized in that the y-type zeolite (claiming molecular sieve again) of synthetic is added in the ozonization water treatment system, agitation condition feeds ozone down, carries out ozonation treatment;
(2) ozonation treatment finishes, by leave standstill, method such as centrifugal, filtration, y-type zeolite is separated, be used for catalytic ozonation water treatment procedure next time;
Above-mentioned ozonation treatment process is carried out under 0-40 ℃ of room temperature condition usually, and the quality relative proportion of adding zeolite and institute's treating water is usually between 0.001-0.05.Used y-type zeolite can be the sodium type, also can be to become Hydrogen through after the ion-exchange; The relative content of sial can be different in the used y-type zeolite structure, can be used as catalytic material in the method for the invention.
After adopting y-type zeolite as catalyzer, under identical ozone input amount situation, the degradation rate of organic pollutant is accelerated to some extent, mineralization degree (representing with COD) significantly improves.Concrete raising degree is relevant with the catalyzer relative proportion and the reaction conditions (comprising temperature, stir speed (S.S.), Pollutant levels, ozone input amount, water body pH etc.) of adding.Comparatively speaking, under the identical situation of other factors, when the ozonation treatment temperature is lower than 298K and zeolite addition greater than 0.005 the time, the effect of raising is more remarkable.
Compare with existing treatment process, the water treatment method that the present invention proposes has outstanding feature:
(1) y-type zeolite is a polyporous materials, has bigger specific surface area, and the BET specific surface area can reach 500m usually
2g
-1More than, particle scale less (micron level) has preferably dispersedly in water, and this touch opportunity for raising and water pollutant, ozone is unusual key.Exactly because advantage like this, in use less input amount can obtain catalytic effect preferably;
(2) y-type zeolite has physical strength preferably, has shown stability preferably under the catalytic ozonation condition, reuses repeatedly, and catalytic effect can access preferably and keep, and this is another key factor for its practical application.
(3) y-type zeolite is very faint to Adsorption phenol in the water, and its katalysis mainly promotes the decomposition of ozone molecule from zeolite surface, so contaminant molecule is very little to its influence, and this also is one of reason of its good stability.
(4) such zeolitic material has been studied very manyly since the sixties in 20th century, realizes commercialization already, and price is relatively cheap, for its practicality provides important guarantee.
Description of drawings
Fig. 1 is embodiment 1 gained result's data: high silicon HY type zeolite, phenol residual concentration (A) COD (B) is with the change curve of ozonize time.(a) independent ozonize, (b) catalytic ozonation.
Fig. 2 is embodiment 2 gained results' data: high silicon HY type zeolite, the changing conditions of phenol concentration (A) and COD (B) in catalyzer repeated use experiment.(a) independent ozonize, (b) catalytic ozonation.
Fig. 3 is embodiment 5 gained results' data: temperature of reaction is to conventional NaY zeolite catalysis ozonize (A) and the influence of the middle phenol degrading of ozonize (B) separately.
Embodiment
It is example that the present invention contains phenol water with processing, and its catalytic effect and embodiment are described, but scope of the present invention is not limited thereto.
Containing initial phenol concentration at 120ml is 100mg L
-1Simulated wastewater in, add high silicon HY zeolite (silica alumina ratio is 3.83) 0.5g, start stirring, under temperature of reaction 293K, feed ozone flow 0.30mg min
-1Ozone, the concentration of phenol and the COD numerical value of solution under the record different time.The result shows that the adding of zeolite has significantly promoted the degraded of phenol and the removal of COD as shown in Figure 1.
Containing initial phenol concentration at 120ml is 100mg L
-1Simulated wastewater in, add high silicon HY zeolite (silica alumina ratio is 3.83) 1.0g, start stirring, under temperature of reaction 293K, feed ozone flow 0.30mg min
-1Ozone 45 minutes, the concentration of record phenol and the COD numerical value of solution.After reaction finishes, zeolite is leached, dropping into 120ml again, to contain initial phenol concentration be 100mg L
-1Simulated wastewater in, under temperature of reaction 293K, feed ozone flow 0.30mg min
-1Ozone 45 minutes, the concentration of record phenol and the COD numerical value of solution.So utilize process to continue 10 times altogether.The result shows that the adding of zeolite has significantly promoted the degraded of phenol and the removal of COD as shown in Figure 2, and catalytic activity keeps stability preferably in 10 times are used.
Containing initial phenol concentration at 120ml is 100mg L
-1Simulated wastewater in, add high silicon NaY zeolite (silica alumina ratio is 3.83) 0.4g, start stirring, under temperature of reaction 293K, feed ozone flow 0.30mg min
-1Ozone, the concentration numerical value of phenol under the record different time.The result is as shown in table 1, and the adding that shows zeolite has significantly promoted the degraded of phenol.
Containing initial phenol concentration at 120ml is 100mg L
-1Simulated wastewater in, add conventional NaY zeolite (silica alumina ratio is 2.57) 0.6g, start stirring, under temperature of reaction 293K, feed ozone flow 0.30mg min
-1Ozone, the concentration numerical value of phenol under the record different time.The result is as shown in table 1, and the adding that shows zeolite has significantly promoted the degraded of phenol.
Containing initial phenol concentration at 120ml is 100mg L
-1Simulated wastewater in, add conventional NaY zeolite (silica alumina ratio is 2.57) 0.5g, start stirring, under temperature of reaction 278,293,308K, feed ozone flow 0.30mgmin respectively
-1Ozone, the concentration numerical value of phenol under the record different time.The result show that under differing temps, the catalytic effect of zeolite is different, but the adding of zeolite has all promoted the degraded of phenol as shown in Figure 3.
(data are the phenol residual concentration to table 1. different zeolites in the table, mg L to the catalytic effect of ozone degradation phenol
-1)
Claims (3)
1, a kind of y-type zeolite is characterized in that as the ozonization water treatment method of catalyzer: in the system of ozonization water treatment, add y-type zeolite as catalyzer, accelerate the oxidative degradation of organic pollutant.
2, y-type zeolite according to claim 1 is characterized in that as the ozonization water treatment method of catalyzer: the ozonization water treatment process is carried out under 0-40 ℃ of room temperature condition.
3, y-type zeolite according to claim 1 is characterized in that as the ozonization water treatment method of catalyzer: the quality relative proportion of the Y zeolite catalyzer that is added and institute's treating water is at 0.001-0.05.
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| CNA2009100321726A CN101585577A (en) | 2009-07-10 | 2009-07-10 | Ozonization water treatment method of using Y-type zeolite as catalyst |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891296A (en) * | 2010-07-19 | 2010-11-24 | 江南大学 | Method for treating ozonization water by taking Y-type zeolite loaded with rare earth oxides of cerium oxide (CeO2) and lanthanum oxide (La2O3) as catalyst |
| CN102010055A (en) * | 2010-12-08 | 2011-04-13 | 江南大学 | Ozonization water treatment method using zinc oxide nanometer material as catalyst |
| CN103962149A (en) * | 2013-09-06 | 2014-08-06 | 张振慧 | Method for preparing multiphase ozonation solid catalyst for water treatment by using rare earth molecular sieve waste residues |
| CN109809617A (en) * | 2019-03-28 | 2019-05-28 | 长沙埃比林环保科技有限公司 | A kind of processing method of dyeing waste water |
-
2009
- 2009-07-10 CN CNA2009100321726A patent/CN101585577A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891296A (en) * | 2010-07-19 | 2010-11-24 | 江南大学 | Method for treating ozonization water by taking Y-type zeolite loaded with rare earth oxides of cerium oxide (CeO2) and lanthanum oxide (La2O3) as catalyst |
| CN102010055A (en) * | 2010-12-08 | 2011-04-13 | 江南大学 | Ozonization water treatment method using zinc oxide nanometer material as catalyst |
| CN103962149A (en) * | 2013-09-06 | 2014-08-06 | 张振慧 | Method for preparing multiphase ozonation solid catalyst for water treatment by using rare earth molecular sieve waste residues |
| CN103962149B (en) * | 2013-09-06 | 2016-01-13 | 张振慧 | The heterogeneous ozonation solid catalyst of water treatment prepared by rare earth containing zeolite waste residue |
| CN109809617A (en) * | 2019-03-28 | 2019-05-28 | 长沙埃比林环保科技有限公司 | A kind of processing method of dyeing waste water |
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Open date: 20091125 |