CN104211161A - Method of treating garbage leachate through nano material heterogeneous catalysis ozonation - Google Patents
Method of treating garbage leachate through nano material heterogeneous catalysis ozonation Download PDFInfo
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- CN104211161A CN104211161A CN201410489398.XA CN201410489398A CN104211161A CN 104211161 A CN104211161 A CN 104211161A CN 201410489398 A CN201410489398 A CN 201410489398A CN 104211161 A CN104211161 A CN 104211161A
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Abstract
The invention discloses a method of treating garbage leachate through nano material heterogeneous catalysis ozonation. The method of treating the garbage leachate through nano material heterogeneous catalysis ozonation is characterized in that nano copper sulphide catalyst is added into an ozonation reactor for improving the oxidation capacity of ozone and further improving the removal rate of COD (chemical oxygen demand) of the garbage leachate as well as the degradation efficiency of refractory organic matters in the garbage leachate. The method of treating the garbage leachate through nano material heterogeneous catalysis ozonation is mainly specified to the garbage leachate and accordingly has high application value in improving water quality.
Description
Technical field
The invention belongs to waste water treatment by ozone oxidation technical field, be specifically related to a kind of method of nano material heterogeneous catalysis ozone Oxidation Treatment percolate.
Background technology
Percolate is a kind of high concentrated organic wastewater that contains multiple pollutant, have very high COD concentration, metal ion and ammonia-nitrogen content are high, are a kind of high concentrated organic wastewaters of complicated component, and its biodegradability is poor, water quality and quantity fluctuation makes greatly the quite difficulty of processing of percolate.On overall, percolate has following several large feature: (1) water quality complexity, and hazardness is large; (2) ammonia-nitrogen content is high; (3) change of water quality is large; (4) metal ion content is higher; (5) proportional imbalance of various nutritive elements in percolate.If the discharge of percolate is not added to control, also can life and the health to people cause serious harm by food chain and ecotope, can cause immunologic function disorder, heavy metal poisoning also has harm in various degree to the Different Organs of human body, as hepatic disease, elevation of blood pressure and joint disease etc.
The treatment process of percolate mainly contains both at home and abroad: chemical precipitation method, blow-off method, biochemical process, high price oxidation technology, micro-electrolysis method and membrane treatment process.At home, the processing of percolate is still taking biological process as main, but the effect of processing is always not ideal.Although membrane technology comparative maturity, expense is higher, can not be widely used in the processing of percolate.
Because ozone has high oxidisability and germ-killing efficiency, be used to many years ago water treatment field, it is a selectable oxygenant, can with some organism rapid reactions, and that other oxygenant is oxidized is very slow.Ozone oxidation be a kind of very important in the aqueous solution method of degradation of organic substances, but, hardly degraded organic substance is sometimes but difficult to be degraded, and when independent ozone Oxidation Treatment percolate, the clearance of oxidation 50min COD of waste leachate can only reach 15.11%.
Summary of the invention
The technical problem that the present invention solves has been to provide a kind of method of nano material heterogeneous catalysis ozone Oxidation Treatment percolate, the method is in ozone oxidation reaction device, to add nano-copper sulfide catalyzer to improve the oxidation capacity of ozone, and then the clearance of COD in raising percolate, improve the degradation efficiency of hardly degraded organic substance in percolate.
Technical scheme of the present invention is: a kind of method of nano material heterogeneous catalysis ozone Oxidation Treatment percolate, is characterized in that comprising the following steps:
(1) preparation of nano-copper sulfide catalyzer
By cupric chloride (CuCl
22H
2o) join and in ethylene glycol, obtain green solution A, then thioacetamide is dissolved in and in ethylene glycol, obtains solution B, solution B is joined to lasting stirring in solution A and obtain flaxen mixed solution, again mixed solution is transferred in tetrafluoroethylene reactor in 120 DEG C of reaction 17h, after finishing, reaction is cooled to room temperature, products therefrom is centrifugal, after water and dehydrated alcohol cleaning, obtains black powder shape product nano-copper sulfide catalyzer in 60 DEG C of vacuum-drying 7h;
(2) the O3 catalytic oxidation processing of percolate
Percolate is mixed in ozone oxidation reaction device with the nano-copper sulfide catalyzer that step (1) obtains, it is 6-10 that described percolate regulates pH in advance, open oxygen cylinder, stablize the heterogeneous catalysis ozone Oxidation Treatment of opening ozonizer after 1min and carry out percolate.
The present invention compared with prior art has following beneficial effect:
(1) by nano-copper sulfide catalyzer, ozone and percolate in a device, form the solid, liquid, gas three-phase system of cupric sulfide, percolate, ozone, under the katalysis of nano-copper sulfide, ozone decomposes the stronger group of generation oxidation capacity in solution, as hydroxyl radical free radical, hardly degraded organic substance decomposed or be converted into the small molecules of more easily removing, making as much as possible the organism in waste water be able to mineralising;
(2) taking nano-copper sulfide as catalyzer, in independent ozone oxidation same time, can make in percolate the degradation rate of COD improve nearly 40%, treating processes is without complicated processing unit, and equipment is simple, and working cost is low;
(3) preparation of nano-copper sulfide catalyzer is simple, and desired raw material is cheap, has reduced processing cost;
(4) the present invention is mainly for percolate, therefore has good using value to improving water quality aspect.
Brief description of the drawings
Fig. 1 is the process flow sheet of heterogeneous catalysis ozone Oxidation Treatment percolate of the present invention.
Drawing explanation: 1, oxygen cylinder, 2, ozonizer, 3, ozone oxidation reaction device, 4, tail gas absorber.
Embodiment
By the following examples foregoing of the present invention is described in further details, but this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to following embodiment, all technology realizing based on foregoing of the present invention all belong to scope of the present invention.
Embodiment 1
The preparation of nano-copper sulfide catalyzer
Take 0.55g CuCl
22H
2o adds 20mL ethylene glycol, stir to obtain green solution A, then 0.45g thioacetamide is dissolved in 20mL ethylene glycol to obtain to solution B, solution B is joined in solution A lentamente, and constantly stir, solution starts adularescent flocks and produces, then become milk shape solution, finally flaxen mixed solution, mixed solution is transferred in tetrafluoroethylene reactor, 120 DEG C of reaction 17h, after finishing, reaction naturally cools to room temperature, to products therefrom centrifugation, after water and absolute ethanol washing several, be placed in 60 DEG C of dry 7h of vacuum drying oven, obtain black powder shape product nano-copper sulfide catalyzer.
Embodiment 2
The O3 catalytic oxidation processing of percolate
2g nano-copper sulfide catalyzer is mixed in ozone oxidation reaction device 3 with 2L percolate (pH own is 6.4), adopt the device of accompanying drawing 1 to carry out heterogeneous catalysis ozone Oxidation Treatment to percolate, first open oxygen cylinder 1, stablize and open ozonizer 2 after 1min and react, tail gas further absorbs through tail gas absorber 4, in 0-50min, sample is gathered, measure the COD value of reaction solution, with before ozone oxidation, contrast, the clearance of COD is 46.24%, compared with the clearance 15.11% of independent ozone Oxidation Treatment COD, improve approximately 30% when not adding catalyzer.
Embodiment 3
The O3 catalytic oxidation processing of percolate
2g nano-copper sulfide catalyzer is mixed in ozone oxidation reaction device 3 with 2L percolate (regulating pH with the NaOH of 1mol/L is 10), adopt the device of accompanying drawing 1 to carry out heterogeneous catalysis ozone Oxidation Treatment to percolate, first open oxygen cylinder 1, stablize and open ozonizer 2 after 1min and react, tail gas further absorbs through tail gas absorber 4, in 0-50min, sample is gathered, measure the COD value of reaction solution, with former percolate contrast, the clearance of COD is 56.49%, compared with the clearance 15.11% of independent ozone Oxidation Treatment COD, improve nearly 40% when not adding catalyzer.
Above embodiment has described ultimate principle of the present invention, principal character and advantage.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; do not departing under the scope of the principle of the invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the scope of protection of the invention.
Claims (1)
1. a method for nano material heterogeneous catalysis ozone Oxidation Treatment percolate, is characterized in that comprising the following steps:
(1) preparation of nano-copper sulfide catalyzer
By cupric chloride CuCl
22H
2o joins and in ethylene glycol, obtains green solution A, then thioacetamide is dissolved in and in ethylene glycol, obtains solution B, solution B is joined to lasting stirring in solution A and obtain flaxen mixed solution, again mixed solution is transferred in tetrafluoroethylene reactor in 120 DEG C of reaction 17h, after finishing, reaction is cooled to room temperature, products therefrom is centrifugal, after water and dehydrated alcohol cleaning, obtains black powder shape product nano-copper sulfide catalyzer in 60 DEG C of vacuum-drying 7h;
(2) the O3 catalytic oxidation processing of percolate
Percolate is mixed in ozone oxidation reaction device with the nano-copper sulfide catalyzer that step (1) obtains, it is 6-10 that described percolate regulates pH in advance, open oxygen cylinder, stablize the heterogeneous catalysis ozone Oxidation Treatment of opening ozonizer after 1min and carry out percolate.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271133A (en) * | 2015-10-09 | 2016-01-27 | 信阳师范学院华锐学院 | Preparation method for synthesizing sulfide nano-material from chloride by one step |
| CN108439572A (en) * | 2018-05-24 | 2018-08-24 | 嘉兴市六承环保科技有限公司 | For reducing the Heterodisperse type ozone oxidation catalyst and its application method of COD of waste leachate value |
Citations (2)
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|---|---|---|---|---|
| CN102531030A (en) * | 2011-12-19 | 2012-07-04 | 陕西科技大学 | Preparation method of monocrystal hexagonal flaky copper sulfide nanometer crystal |
| JP2012161704A (en) * | 2011-02-03 | 2012-08-30 | Toyota Central R&D Labs Inc | Photocatalyst, and photoelectrode using the same |
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2014
- 2014-09-24 CN CN201410489398.XA patent/CN104211161B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012161704A (en) * | 2011-02-03 | 2012-08-30 | Toyota Central R&D Labs Inc | Photocatalyst, and photoelectrode using the same |
| CN102531030A (en) * | 2011-12-19 | 2012-07-04 | 陕西科技大学 | Preparation method of monocrystal hexagonal flaky copper sulfide nanometer crystal |
Non-Patent Citations (2)
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| 潘留明等: "臭氧强化光催化对垃圾渗滤液的深度处理", 《环境工程学报》, vol. 2, no. 5, 5 May 2008 (2008-05-05) * |
| 谭志刚等: "溶剂热法合成硫化铜花状微米球超结构及其光催化性能", 《化学学报》, vol. 69, no. 23, 14 December 2011 (2011-12-14) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271133A (en) * | 2015-10-09 | 2016-01-27 | 信阳师范学院华锐学院 | Preparation method for synthesizing sulfide nano-material from chloride by one step |
| CN108439572A (en) * | 2018-05-24 | 2018-08-24 | 嘉兴市六承环保科技有限公司 | For reducing the Heterodisperse type ozone oxidation catalyst and its application method of COD of waste leachate value |
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| CN104211161B (en) | 2017-01-18 |
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