CN102206002A - Preparation method of modified haydite filler for sewage purification - Google Patents
Preparation method of modified haydite filler for sewage purification Download PDFInfo
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- CN102206002A CN102206002A CN2011101154516A CN201110115451A CN102206002A CN 102206002 A CN102206002 A CN 102206002A CN 2011101154516 A CN2011101154516 A CN 2011101154516A CN 201110115451 A CN201110115451 A CN 201110115451A CN 102206002 A CN102206002 A CN 102206002A
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- filler
- ionic liquid
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- modification
- biofilters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Water Treatment By Sorption (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a preparation method of a modified haydite filler for sewage purification, and belongs to a preparation method of a filler for sewage treatment in the environment protection field. The preparation method comprises the following steps: with a haydite filler as a raw material, sieving to obtain an irregular granular filler with phi of 5-100 mm; soaking the filler with an ionic liquid containing low-content lanthanum rare earth elements for modification treatment, wherein the specific conditions are that the soaking temperature is a room temperature, and the soaking time is 4-24 h, draining to obtain the finished product. The filler has low-cost raw materials, simple processing process, and good application effect. The filler is wildly applicable to trickling filters, anaerobic biofilters, filters, biological fluidized bed, aerated biofilters, high-load biofilters, tower biofilters, activated biofilters, marshes, etc.
Description
Technical field
The present invention relates to filler of the relevant sewage disposal in environmental protection field and preparation method thereof, especially relate to a kind of modification ceramics filling that is used for sewage purification and preparation method thereof.
Background technology
China is the relatively country of shortage of water resources, along with expanding economy, and quickening of urbanization process, the urban water shortage problem is on the rise, and a large amount of dischargings of municipal effluent have more increased the weight of this trend.Sewage disposal is one of important technique measure of control water environment pollution, and the height of sewage treatment process level will directly influence a geographic quality of water environment.Biological filter and fluidization are the new bio treatment technologies that is fit to middle-size and small-size point source wastewater treatment and reuse; They are biofilm carrier with the granular filler, simultaneously, bed of packings has concurrently again and filters the function of holding back with solid-liquid separation, and carrier performance is bigger to its treatment efficiency, construction costs and working cost influence, therefore, packing property research is one of key problem of biological filter and fluidization.
Experiment is arranged to being that the general property that the BAF of filler is used for sewage disposal studies show that the biological filter technology is to COD, NH in the sewage quality composition with the haydite early stage
4 +, turbidity, SS etc. have good treatment effect, clearance can reach 88.4%, 93.7%, 91.6% and 94.2% respectively, but to the clearance not high (on average only being 54.5%) of total nitrogen (TN).Natural haydite after further selecting to pulverize is as filler, and test shows, though pulverized haydite is a kind of aerating biological filter pool filler relatively preferably, COD, SS and turbidity improvement is not had too big difference than haydite, and very low to the clearance of TP.
Lanthanide series rare-earth elements has good promoter action to microorganism under lower concentration, particularly outstanding to effects such as nitrobacteria, denitrifying bacterium, phosphate solubilizing bacterias.
(Ionic liquids ILs), claims that again (Room temperature ionic liquids RTIL), is meant the organic liquid material of being made up of ion fully to ionic liquid at room temperature under room temperature and adjacent temperature to ionic liquid.Have no vapour pressure, can replace volatile organic solvent, peculiar property such as can be recycled; In chemical reaction, make reaction medium or as catalyzer; In electrochemistry, make ionogen etc.Characteristics such as that ionic liquid has is non-volatile, nonflammable, conduction, catalysis, alternative traditional pollution medium also extensively changes traditional chemical technology, meets the principle of Green Chemistry, thereby is called as green solvent.Ionic liquid causes that people greatly pay close attention to since the nineties in last century, is acknowledged as the media/material of new generation of Green Chemistry chemical industry, will form once new industrial technology revolution.But tasteless, ordorless, pollution-free, nonflammable, the easy recovery repeated multiple times of ionic liquid recycles, advantage such as easy to use, is genuine, eco-friendly green solvent.Be suitable for the requirement of current cleaning technique of advocating and Sustainable development, more and more by the extensive recognition and acceptance of people.
Summary of the invention
For can obtain a kind of good purification, acquisition cost is low, durable, particularly to COD, NH in the sewage quality composition
4 +, TN, TP, SS etc. have the filler of good treatment effect, people have done a large amount of research and developments.The invention provides a kind of modification ceramics filling that is used for sewage purification and preparation method thereof, this filler is good purification, durable not only, particularly to COD, NH in the sewage quality composition
4 +, TN, TP, SS etc. have good treatment effect, and the starting material source is abundant, with low cost, complete processing is simple.
The technical scheme of modification ceramics filling that the present invention is used for sewage purification is as follows:
Be used for the preparation method of the modification ceramics filling of sewage purification, carry out: take haydite as main raw material(s), obtain irregular granular (Φ=5-100 mm) by series of process such as jigging according to following step; Soaking modification with the imidazole type ion liquid that contains the lower concentration lanthanide series rare-earth elements, pyridine type ionic liquid, piperidines type ionic liquid, tetramethyleneimine type ionic liquid etc. then handles, actual conditions is a soak at room temperature, soak time is 4-24 h, drains, and obtains finished product.
Wherein said ionic liquid is imidazole type ion liquid, pyridine type ionic liquid, piperidines type ionic liquid or tetramethyleneimine type ionic liquid.
The ionic liquid that wherein said usefulness contains lanthanide series rare-earth elements soaks modification to be handled, and is treated to specifically that to add lanthanide series rare-earth elements to treatment system final concentration be that 0.001-0.1 mol/L, ionic liquid final concentration are 0.001-0.01 mol/L.
The invention provides a kind of modification modification ceramics filling that is used for sewage purification and preparation method thereof, this filler is good purification, durable not only, particularly to COD, NH in the sewage quality composition
4 +, TN, TP, SS etc. have good treatment effect, and the starting material source is abundant, with low cost, complete processing is simple.
Embodiment
Embodiment 1:
Choose the haydite screening and obtain irregular haydite particle (Φ=5-50 mm); Then with the imidazole type ion liquid-1-butyl that contains lower concentration lanthanide series rare-earth elements LaCl3-(the lanthanide series rare-earth elements final concentration is 0.05 mol/L in 3-Methylimidazole chloro salt ([Bmin] Cl) soak at room temperature modification processing, the ionic liquid final concentration is 0.01 mol/L, soak time is 6 h.), drain, obtain finished product.
Embodiment 2:
Choose the haydite screening and obtain irregular haydite particle (Φ=10-100 mm); (the lanthanide series rare-earth elements final concentration is 0.1 mol/L with pyridine type ionic liquid-bromination N-ethylpyridine (N-ethylpyridinium bromide) the soak at room temperature modification processing that contains lower concentration lanthanide series rare-earth elements LaCl3 then, the ionic liquid final concentration is 0.005 mol/L, soak time is 12 h.), drain, obtain finished product.
Embodiment 3:
Choose the haydite screening and obtain irregular haydite particle (Φ=5-100 mm); Then with the piperidines imidazole type ion liquid-bromination N-methyl that contains lower concentration lanthanide series rare-earth elements LaCl3, (the lanthanide series rare-earth elements final concentration is 0.001 mol/L in ethyl piperidine (N-ethyl-methyl pipe) soak at room temperature modification processing, the ionic liquid final concentration is 0.001 mol/L, soak time is 24 h.), drain, obtain finished product.
Test example 1: the invention process example 1 modification ceramics filling and ceramics filling wastewater treatment efficiency
The modification ceramics filling of preparation in the embodiment 1 and the ceramics filling of not using the ionic liquid that contains the lower concentration lanthanide series rare-earth elements to carry out the modification processing are carried out sewage disposal, detect its wastewater treatment efficiency (table 1, table 2).
Test example 2: the invention process example 2 modification ceramics fillings and ceramics filling wastewater treatment efficiency
The modification ceramics filling of preparation in the embodiment 2 and the ceramics filling of not using the ionic liquid that contains the lower concentration lanthanide series rare-earth elements to carry out the modification processing are carried out sewage disposal, detect its wastewater treatment efficiency (table 1, table 3).
Test example 3: the invention process example 3 modification ceramics fillings and ceramics filling wastewater treatment efficiency
The modification ceramics filling of preparation in the embodiment 3 and the ceramics filling of not using the ionic liquid that contains the lower concentration lanthanide series rare-earth elements to carry out the modification processing are carried out sewage disposal, detect its wastewater treatment efficiency (table 1, table 4).
Testing apparatus adopts unidimensional upward flow synthetic glass BAF, single pond diameter 150 mm, and high 2.5 m, filler load height 1.8 m.Experimental water is a sanitary sewage.The experimental session water temperature is 15 ~ 30 ℃, gas-water ratio 5:1.Design maximum head 1.2 m, head loss reaches 1 m and carries out back flushing during actual motion, carries out combined water and air backwash by the program of gas-gas+water-water, and the time is followed successively by 2 ~ 3 min, 3 ~ 5 min, 9 ~ 11 min; Purge gas intensity 10 L/(m
2S), water intensity 10 L/(m
2S).The mensuration of indexs such as COD, ammonia nitrogen, TN, TP is all undertaken by standard method, and sample frequency is taken a sample 3 times at least for each steady state.SS is more loaded down with trivial details because of measuring, and when inferior quality concentration poor accuracy, so adopt the turbidity sign.
Table 1 ceramics filling is to sanitary sewage disposal usefulness
Table 2 contains the imidazole type ion liquid modification ceramics filling of lower concentration lanthanide series rare-earth elements to sanitary sewage disposal usefulness
Table 3 contains the pyridine type ionic liquid modification ceramics filling of lower concentration lanthanide series rare-earth elements to sanitary sewage disposal usefulness
Table 4 contains the ion liquid modified ceramics filling of piperidines type of lower concentration lanthanide series rare-earth elements to sanitary sewage disposal usefulness
Above test-results shows, the ceramics filling wastewater treatment efficiency after the modification than the ceramics filling good sewage processing effect many.
Above-described only is preferred implementation of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the principle of the invention, can also make some modification and improvement, this also should be considered as belonging to protection scope of the present invention.
Claims (3)
1. the preparation method who is used for the modification ceramics filling of sewage purification is characterized in that carrying out according to following step: take haydite as main raw material(s), obtain the irregular granular Φ of making=5-100 mm by jigging; Soak modification with the ionic liquid that contains the lower concentration lanthanide series rare-earth elements then and handle, actual conditions is a soak at room temperature, and soak time is 4-24 h, drains, and obtains finished product.
2. the preparation method who is used for the modification ceramics filling of sewage purification according to claim 1 is characterized in that wherein said ionic liquid is imidazole type ion liquid, pyridine type ionic liquid, piperidines type ionic liquid or tetramethyleneimine type ionic liquid.
3. the preparation method who is used for the modification ceramics filling of sewage purification according to claim 1, it is characterized in that ionic liquid that wherein said usefulness contains lanthanide series rare-earth elements soaks modification and handles, be treated to specifically that to add lanthanide series rare-earth elements to treatment system final concentration be that 0.001-0.1 mol/L, ionic liquid final concentration are 0.001-0.01 mol/L.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101154516A CN102206002B (en) | 2011-05-05 | 2011-05-05 | Preparation method of modified haydite filler for sewage purification |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101154516A CN102206002B (en) | 2011-05-05 | 2011-05-05 | Preparation method of modified haydite filler for sewage purification |
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| CN102206002A true CN102206002A (en) | 2011-10-05 |
| CN102206002B CN102206002B (en) | 2013-03-27 |
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| CN2011101154516A Active CN102206002B (en) | 2011-05-05 | 2011-05-05 | Preparation method of modified haydite filler for sewage purification |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069806A (en) * | 2014-05-22 | 2014-10-01 | 内蒙古大学 | Rare earth loaded function material prepared from rare-earth tailings and preparation method of material |
| CN110871050A (en) * | 2019-11-29 | 2020-03-10 | 东北电力大学 | Application of lanthanum modified ecological filler adsorbent and preparation method thereof |
| CN111747511A (en) * | 2020-07-08 | 2020-10-09 | 江西理工大学 | Method and system for synchronously removing ammonia nitrogen and rare earth ion pollution in rare earth mining area |
Citations (4)
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|---|---|---|---|---|
| CN101012087A (en) * | 2005-09-22 | 2007-08-08 | 刘德沛 | Method of processing sewage utilizing fluidized bed technique, organism compatibility filling thereof and preparing method of filling |
| CN101343111A (en) * | 2008-09-03 | 2009-01-14 | 南京大学 | Method for improving attached growth wastewater treatment biomembrane reactor efficiency |
| CN100467548C (en) * | 2006-12-14 | 2009-03-11 | 浙江工业大学 | Use and dosage of ioonic liquid as tower filler surface treating agent |
| JP2010125361A (en) * | 2008-11-26 | 2010-06-10 | Akinobu Fujita | Wastewater treatment system and purification system |
-
2011
- 2011-05-05 CN CN2011101154516A patent/CN102206002B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101012087A (en) * | 2005-09-22 | 2007-08-08 | 刘德沛 | Method of processing sewage utilizing fluidized bed technique, organism compatibility filling thereof and preparing method of filling |
| CN100467548C (en) * | 2006-12-14 | 2009-03-11 | 浙江工业大学 | Use and dosage of ioonic liquid as tower filler surface treating agent |
| CN101343111A (en) * | 2008-09-03 | 2009-01-14 | 南京大学 | Method for improving attached growth wastewater treatment biomembrane reactor efficiency |
| JP2010125361A (en) * | 2008-11-26 | 2010-06-10 | Akinobu Fujita | Wastewater treatment system and purification system |
Non-Patent Citations (1)
| Title |
|---|
| 《稀土》 19960630 胡勤海等 稀土元素对活性污泥影响的初步研究 第44-46页 1-3 第17卷, 第3期 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069806A (en) * | 2014-05-22 | 2014-10-01 | 内蒙古大学 | Rare earth loaded function material prepared from rare-earth tailings and preparation method of material |
| CN104069806B (en) * | 2014-05-22 | 2016-08-17 | 内蒙古大学 | A kind of rare earth loaded type functional material utilizing rare-earth tailing to prepare and preparation technology thereof |
| CN110871050A (en) * | 2019-11-29 | 2020-03-10 | 东北电力大学 | Application of lanthanum modified ecological filler adsorbent and preparation method thereof |
| CN111747511A (en) * | 2020-07-08 | 2020-10-09 | 江西理工大学 | Method and system for synchronously removing ammonia nitrogen and rare earth ion pollution in rare earth mining area |
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| CN102206002B (en) | 2013-03-27 |
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