CN102198400B - Preparation and use methods of catalyst for processing landfill leachate - Google Patents
Preparation and use methods of catalyst for processing landfill leachate Download PDFInfo
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- CN102198400B CN102198400B CN 201110063653 CN201110063653A CN102198400B CN 102198400 B CN102198400 B CN 102198400B CN 201110063653 CN201110063653 CN 201110063653 CN 201110063653 A CN201110063653 A CN 201110063653A CN 102198400 B CN102198400 B CN 102198400B
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Abstract
The invention relates to preparation and use methods of a catalyst for processing landfill leachate, belonging to the technical field of landfill processing in environmental engineering and aiming at preparing a catalyst with low price and high efficiency, which is used for processing landfill leachate by combining with ozone, reducing the usage amount of the zone in the catalytic oxidization of the landfill leachate, lowering the processing cost of the landfill leachate and improving the processing effect of the landfill leachate. The main technical scheme of the preparation method comprises the steps of: immersing aluminum oxide in a chloride solution of copper and nickel with a certain concentration, drying and baking after saturation, and cooling to obtain the catalyst; and the use method comprises the steps: the catalyst is added to the landfill leachate at a room temperature and the ozone is introduced, the residual catalyst is leached after reaction, and the leached catalyst is cleaned and then reused after directly baking or baking after adding with acid.
Description
Technical field
The invention belongs to the technology of garbage disposal field of environmental project subject, be specifically related to a kind of catalyst preparation and application of disposal of refuse percolate.
Background technology
Percolate is one of universally acknowledged the most unmanageable waste water, does not have so far ripe efficient cheap percolate treating process.Adopt traditional percolate biology treatment technology to be difficult to percolate is processed up to standard, and that the cost of percolate is processed in materialization is high, has limited its wide-scale adoption.Adopt the catalytic ozonation Treatment Landfill Leachate to have and do not produce secondary pollution, be not subjected to the advantage that the leachate quality water yield changes to be affected greatly, but its cost is higher.If reduce the percolate processing cost, can be by synthetic a kind of cheapness, be easy to get, efficient catalyst, with this catalyst and ozone coupling disposal of refuse percolate.
Still there is the problem that price is high and treatment effect is undesirable in the catalyst of processing percolate with the ozone coupling, for this problem, the present invention is take alundum (Al2O3) as carrier, synthesize the many kinds of metal ions catalyst and be used for the percolate catalytic oxidation treatment, and therefrom filtered out the best catalyst of a kind for the treatment of effect, adopt this catalyst can reduce the ozone use amount, reduce the percolate processing cost.
Summary of the invention
The objective of the invention is catalyst synthetic Cheap highly effective and the disposal of refuse percolate ozone coupling, reduce the use amount of ozone in the percolate catalytic oxidation treatment, reduce the percolate processing cost, improve the percolate treatment effect.
To achieve these goals, the present invention takes following technical scheme:
1, the making of catalyst
Compound concentration is the chloride solution of the copper and mickel of 0.25mol/L respectively, getting two kinds of solution mixes rear as maceration extract, the mole dosage ratio of the chloride solution of copper and mickel is 1: 1, be that γ-alundum (Al2O3) of 3mm is put into maceration extract as carrier and carried out 3～5 supersaturation dipping with diameter, drain maceration extract behind each dipping; Under 180 ℃ of conditions, dries 2h behind the dipping, then in Muffle furnace with 800 ℃ temperature roasting 3h; Last room temperature cooling, it is for subsequent use that the copper Ni type catalyst that taking-up makes is put into drier.
2, the use of catalyst
Get the percolate that COD concentration is 500～15000mg/L, regulating percolate pH value is 9, in percolate, add catalyst and pass into ozone at ambient temperature, catalyst amounts is 3 calculating according to the mass ratio of catalyst and percolate COD, ozone dosage is 0.55 calculating according to the quality of ozone and percolate COD, behind the reaction 4h, stop to pass into ozone, reaction finishes.
3, the recovery of catalyst and activation
Percolate after catalytic ozonation is processed through precipitation, is removed its supernatant, and drop goes out residual catalyst, then it is carried out ultrasonic washing 3～5 times, washs 3～5min at every turn, with ultra-pure water washing 3～5 times, washs 3～5min at last at every turn.The activation method of the residual catalyst after cleaning has two kinds: (1) direct sintering is with directly putting into the Muffle furnace sintering after the residual catalyst oven dry of cleaning, concrete identical with the method for Kaolinite Preparation of Catalyst; (2) acid adding roasting method again adds watery hydrochloric acid or rare nitric acid in the residual catalyst of cleaning, use amount is the quality=0.05～0.5 of diluted acid quality/catalyst, the again roasting of washed post-drying.
Good effect of the present invention is:
1, passes through to reduce the ozone use amount of percolate catalytic oxidation treatment, and then reduced the cost of percolate catalytic oxidation treatment, for condition has been created in the application of percolate catalytic oxidation technology.
2, can improve the COD of waste leachate clearance, improve the biodegradability of percolate, further carry out a biological disposal upon for percolate and created advantage.
3, take γ-alundum (Al2O3) and copper nickel solution as making material, material is easy to get, and cost is low.
The specific embodiment
Prepare respectively the chloride solution of the copper and mickel of 0.25mol/L, two kinds of solution getting 75mL mix as maceration extract, are that γ-alundum (Al2O3) of 3mm is put into maceration extract as carrier and carried out supersaturation dipping with the 20g diameter, flood 1h at every turn, total immersion stain 3 times, the total dip time is 3h.Drain maceration extract behind each dipping; Under 180 ℃ of conditions, dries 2h behind the dipping, then in Muffle furnace with 800 ℃ temperature roasting 3h; Last room temperature is placed cooling, and it is for subsequent use that the copper Ni type catalyst that taking-up makes is put into drier.
Get a certain amount of percolate, regulating percolate pH value is 9, be that the dosage that ozone always adds quality/percolate COD quality=0.55 adds catalyst in percolate according to ozone dosage, be that the ozone dosage of catalyst quality/percolate COD quality=3 passes into ozone in percolate according to catalyst amounts, measure ozone dosage with gas flowmeter, passing into the ozone time is 4h, unnecessary ozone absorbs with liquor kalii iodide, can calculate the ozone amount that KI absorbs by the sodium thiosulfate titration.After stopping reaction, take out the catalyst in the percolate.
Claims (4)
1. the preparation method of the catalyst of a disposal of refuse percolate, it is characterized in that: compound concentration is the chloride solution of the copper and mickel of 0.25mol/L respectively, getting respectively two kinds of solution mixes rear as maceration extract, the mole dosage ratio of the chloride solution of copper and mickel is 1: 1, be that γ-alundum (Al2O3) of 3mm is put into maceration extract as carrier and carried out 3～5 supersaturation dipping with diameter, drain maceration extract behind each dipping, under 180 ℃ of conditions, dry 2h behind the dipping, then in Muffle furnace with 800 ℃ temperature roasting 3h, last room temperature cooling is for subsequent use.
According to claim 1 the preparation of described method and the application of catalyst, it is characterized in that: percolate pH value is adjusted to 9, in percolate, add catalyst and pass into ozone at ambient temperature, catalyst amounts is 3 times of percolate COD quality, it is 0.55 times of percolate COD quality that ozone adds total amount, and the reaction time is 4h.
3. application according to claim 2, the recovery of its catalyst and activation process are: used residual catalyst, after ultrasonic wave and ultra-pure water are cleaned, under 180 ℃ of conditions, dry 2h, then in Muffle furnace with 800 ℃ temperature roasting 3h, last room temperature cooling is for subsequent use.
4. application according to claim 2, the recovery of its catalyst and activation process are: add watery hydrochloric acid or rare nitric acid in the residual catalyst of cleaning, watery hydrochloric acid or rare nitric acid use amount are 0.05～0.5 times of catalyst quality, the again roasting of washed post-drying, and the room temperature cooling is for subsequent use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110063653 CN102198400B (en) | 2011-03-17 | 2011-03-17 | Preparation and use methods of catalyst for processing landfill leachate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110063653 CN102198400B (en) | 2011-03-17 | 2011-03-17 | Preparation and use methods of catalyst for processing landfill leachate |
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| Publication Number | Publication Date |
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| CN102198400A CN102198400A (en) | 2011-09-28 |
| CN102198400B true CN102198400B (en) | 2013-02-06 |
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| CN 201110063653 Expired - Fee Related CN102198400B (en) | 2011-03-17 | 2011-03-17 | Preparation and use methods of catalyst for processing landfill leachate |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108745358A (en) * | 2018-05-25 | 2018-11-06 | 中科海创环境科技（大连）有限公司 | It is electrolysed preparation method and its electrolysis unit of the landfill leachate except the catalyst of ammonia nitrogen |
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2011
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Non-Patent Citations (4)
| Title |
|---|
| 几种催化剂对垃圾渗滤液臭氧氧化效能的影响;吴晓燕 等;《环境科学学报》;20100630;第30卷(第6期);第1184页2.3、2.5部分 * |
| 吴晓燕 等.几种催化剂对垃圾渗滤液臭氧氧化效能的影响.《环境科学学报》.2010,第30卷(第6期),第1184页2.3、2.5部分. |
| 张彭义等.镍铜氧化物对吐氏酸废水臭氧氧化的催化作用.《中国环境科学》.1998,第18卷(第04期),第310页右栏，311页左栏. |
| 镍铜氧化物对吐氏酸废水臭氧氧化的催化作用;张彭义等;《中国环境科学》;19981231;第18卷(第04期);第310页右栏，311页左栏 * |
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| CN102198400A (en) | 2011-09-28 |
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Effective date of registration: 20130513 Address after: 130118 Key Laboratory of water environment of Songliao Basin, Ministry of education, 5088 Xincheng street, Jilin, Changchun Patentee after: Jilin Institute of Architecture and Civil Engineering Address before: 130021 Changchun Provincial People's road, Jilin province No. 6255 Provincial Association for science and technology Patentee before: Yin Jun |
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