CN101185876A - Circular used metal/tripolite wastewater processing agent and its processing technique - Google Patents
Circular used metal/tripolite wastewater processing agent and its processing technique Download PDFInfo
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- CN101185876A CN101185876A CNA2007100706448A CN200710070644A CN101185876A CN 101185876 A CN101185876 A CN 101185876A CN A2007100706448 A CNA2007100706448 A CN A2007100706448A CN 200710070644 A CN200710070644 A CN 200710070644A CN 101185876 A CN101185876 A CN 101185876A
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- diatomite
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Abstract
The invention discloses a metal/diatomite wastewater treatment agent that can be used by recycling, which is made of materials with the following weight percentages: two to ten percent of metal elements and ninety to ninety eight percent of diatomite and the processing technique of the metal/diatomite wastewater treatment agent that can be used by recycling. The invention makes use of the organic combination between the cryogenic adsorption of the diatomite and the performance of high-temperature oxidative decomposition of pollutants of the active metal to prepare the load-type metal/diatomite wastewater treatment agent that can be used by recycling. Compared with pure diatomite adsorbent, the metal/diatomite is characterized in that: the metal/diatomite has the higher adsorption capacity; the metal/diatomite can be used by recycling for a plurality of times; the adsorption capacity keeps at the level of more than eighty percent of the primary saturated adsorption; the resources are saved; the cost is reduced; and the metal/diatomite is in accordance with social demands of sustainable development.
Description
Technical field
The present invention relates to a kind of metal that recycles/diatomite waste water treating agent and processing technology thereof, belong to chemical technology field.
Background technology
Diatomite is a kind of silicastone, and main component is a silica, and next contains a certain amount of Al
2O
3, Fe
2O
3, metal oxide such as CaO.Advantages such as diatomite has loose structure, density is low, specific area is big, adsorptivity is strong, chemical stability is high, nonpoisonous and tasteless, heat insulation, sound insulation, industrial main as filtering agent, filler, insulation material etc.China's diatomite resource is abundant, and 3.85 hundred million tons in reserves ore is arranged, and is only second to the U.S., occupies the 2nd in the world.Just the someone utilized diatomaceous absorption property that diatomite is used for small-sized water treatment facilities as water treatment agent as far back as 1915.For many years diatomaceous research is substantially all concentrated in the improvement of absorption property, promptly, diatomite increases its adsorption capacity by being carried out modification, but processing and recycling research for waste residue behind the diatomite adsorption treatment waste water are few, and diatomite often once utilizes the back just discarded.Diatomite is because specific area is limited, even process modification adsorption capacity is also lower, though diatomite is inexpensive simultaneously, but belong to non-renewable resources, once use the back just discarded, waste resource first, second cost is also higher, does not meet the society need of sustainable development.
Summary of the invention
The object of the present invention is to provide a kind of metal that recycles/diatomite waste water treating agent, the present invention has the adsorption capacity height, repeatedly use capable of circulation, adsorption capacity remains on more than 80% of first saturated extent of adsorption, economize on resources, cost reduces, and meets the characteristics of the society need of sustainable development.
In order to achieve the above object, technical scheme of the present invention is:
A kind of metal that recycles/diatomite waste water treating agent, formulated by following raw materials by weight percent:
Metallic element: 2-10%;
Diatomite: 90-98%.
Described metallic element adopts the nitrate compound (Fe (NO of transition metal Fe, Cu, Zn and Ni
3)
39H
2O, Cu (NO
3)
23H
2O, Zn (NO
3)
26H
2O, Ni (NO
3)
26H
2O) a kind of in is raw material.Can select different metal components according to the difference of pollutant character.
The processing technology of described a kind of metal that recycles/diatomite waste water treating agent comprises the steps:
(1) diatomite material is carried out preliminary treatment, pulverize, sieve, select certain particle diameter, 20-60 purpose diatomite places 500 ℃ of roastings of Muffle furnace 2 hours, removes wherein volatile component;
(2) preparation of metal/diatomite water treatment agent, adopt equi-volume impregnating, nitrate compound is dissolved in is configured to solution in the distilled water, add pretreated 20-60 order diatomite then, make diatomite just in time adsorb to fall nitrate compound solution fully, placed 2 hours under the room temperature, dried 12 hours down for 80 ℃ then, and then 180-300 ℃ of following roasting 2 hours, different metal/diatomite sintering temperature difference promptly got the metal/diatomite waste water treating agent after supporting;
(3) metal/diatomite water treatment agent regeneration, metal/diatomite waste water treating agent after using is reclaimed, under 150-300 ℃ of air atmosphere, regenerated 1 hour then, promptly under 150-300 ℃ of air, expose 1 hour, different metal/diatomite regeneration temperature difference, the pollutant that is adsorbed on the diatomite surface is decomposed by catalytic oxidation, and metal/diatomite waste water treating agent obtains regeneration, continues to reuse.
Beneficial effect of the present invention is: diatomite has suction-operated, but does not possess the ability of decomposing pollutant; And metal, especially transition metal have good catalytic oxidation activity under certain condition.The present invention has utilized the performance of the high-temperature oxydation decomposing pollutant of diatomaceous cryogenic absorption and reactive metal organically to combine, prepare loaded reusable edible metal/diatomite waste water treating agent, compare with pure silicon algae earth adsorbing, the adsorption capacity of metal/diatomite waste water treating agent has a more substantial increase, what is more important metal/diatomite waste water treating agent can circulate and repeatedly use, adsorption capacity remains on more than 80% of first saturated extent of adsorption, economize on resources, cost reduces, and meets the society need of sustainable development.
The specific embodiment
Embodiment 1
Preparation 2%Fe/ diatomite water treatment agent at first carries out preliminary treatment with diatomite material, pulverizes, and sieves, and selects certain particle diameter, and 20-60 purpose diatomite places 500 ℃ of roastings of Muffle furnace 2 hours, removes wherein volatile component; Adopt equi-volume impregnating then, take by weighing the pretreated 20-60 order of 5g diatomite, measuring diatomaceous saturated extent of adsorption needs 7-8mL distilled water for 5g diatomite, and the amount of required Fe element just is: 5*2%=0.1g gets Fe (NO thus
3)
39H
2The amount of O is: (Fe (NO
3)
39H
2O molecular weight/Fe molecular weight) amount=404/56*0.1=0.72g of the required Fe element of * is with 0.72g Fe (NO
3)
39H
2O is dissolved in the 7.0mL distilled water and is mixed with solution, adds the pretreated diatomite of 5g then in the solution that is mixed with, and makes diatomite just in time adsorb to fall Fe (NO fully
3)
39H
2O solution was placed 2 hours under the room temperature, dried 12 hours down for 80 ℃ then, and then 200 ℃ of following roastings 2 hours, promptly got the metal/diatomite waste water treating agent after supporting.
Take by weighing 1.0g 2%Fe/ diatomite waste water treating agent, place the 250mL conical flask, add 100mL then, 60mg/L terephthaldehyde acid solution (molecular formula: C
8H
6O
4, molecular weight: 166.13, be a kind of main pollutant in the emulation silk production process, be difficult to biodegradation), leave standstill sampling after 8 hours under the room temperature, use the ultraviolet spectrophotometry analysis, measurement result is as shown in table 1.
2%Fe/ diatomite waste water treating agent behind the processing pollutant earlier with the solution elimination, reclaims 2%Fe/ diatomite.2%Fe/ diatomite was regenerated 1 hour under 250 ℃ of air, the terephthalic acid (TPA) of absorption is decomposed by catalytic oxidation.2%Fe/ diatomite obtains regeneration, continues to recycle.
Embodiment 2
Preparation 5%Fe/ diatomite water treatment agent at first carries out preliminary treatment with diatomite material, pulverizes, and sieves, and selects certain particle diameter, and 20-60 purpose diatomite places 500 ℃ of roastings of Muffle furnace 2 hours, removes wherein volatile component; Adopt equi-volume impregnating then, take by weighing the pretreated 20-60 order of 5g diatomite, measuring diatomaceous saturated extent of adsorption needs 7-8mL distilled water for 5g diatomite, and the amount of required Fe element just is: 5*5%=0.25g gets Fe (NO thus
3)
39H
2The amount of O is: (Fe (NO
3)
39H
2O molecular weight/Fe molecular weight) amount=404/56*0.25=1.80g of the required Fe element of * is with 1.80g Fe (NO
3)
39H
2O is dissolved in the 7.2mL distilled water and is mixed with solution, adds the pretreated diatomite of 5g then in the solution that is mixed with, and makes diatomite just in time adsorb to fall Fe (NO fully
3)
39H
2O solution was placed 2 hours under the room temperature, dried 12 hours down for 80 ℃ then, and then 200 ℃ of following roastings 2 hours, promptly got the metal/diatomite waste water treating agent after supporting.
Take by weighing 1.0g 5%Fe/ diatomite waste water treating agent, place the 250mL conical flask, add 100mL then, 60mg/L terephthaldehyde acid solution (molecular formula: C
8H
6O
4, molecular weight: 166.13, be a kind of main pollutant in the emulation silk production process, be difficult to biodegradation), leave standstill sampling after 8 hours under the room temperature, use the ultraviolet spectrophotometry analysis, measurement result is as shown in table 1.
5%Fe/ diatomite waste water treating agent behind the processing pollutant earlier with the solution elimination, reclaims 5%Fe/ diatomite.5%Fe/ diatomite was regenerated 1 hour under 250 ℃ of air, the terephthalic acid (TPA) of absorption is decomposed by catalytic oxidation.5%Fe/ diatomite obtains regeneration, continues to recycle.The result who uses back single diatomite that reclaims and 5%Fe/ diatomite to recycle six times is as shown in table 3.As shown in Table 3, single diatomite can't recycle substantially, and 5%Fe/ diatomite recycle six times after adsorbance still up to 0.21mg/g, be approximately 80% of adsorbance for the first time.
Embodiment 3
Preparation 8%Fe/ diatomite water treatment agent at first carries out preliminary treatment with diatomite material, pulverizes, and sieves, and selects certain particle diameter, and 20-60 purpose diatomite places 500 ℃ of roastings of Muffle furnace 2 hours, removes wherein volatile component; Adopt equi-volume impregnating then, take by weighing the pretreated 20-60 order of 5g diatomite, measuring diatomaceous saturated extent of adsorption needs 7-8mL distilled water for 5g diatomite, and the amount of required Fe element just is: 5*8%=0.40g gets Fe (NO thus
3)
39H
2The amount of O is: (Fe (NO
3)
39H
2O molecular weight/Fe molecular weight) amount=404/56*0.40=2.89g of the required Fe element of * is with 2.89g Fe (NO
3)
39H
2O is dissolved in the 7.8mL distilled water and is mixed with solution, adds the pretreated diatomite of 5g then in the solution that is mixed with, and makes diatomite just in time adsorb to fall Fe (NO fully
3)
39H
2O solution was placed 2 hours under the room temperature, dried 12 hours down for 80 ℃ then, and then 200 ℃ of following roastings 2 hours, promptly got the metal/diatomite waste water treating agent after supporting.
Take by weighing 1.0g 8%Fe/ diatomite waste water treating agent, place the 250mL conical flask, add 100mL then, 60mg/L terephthaldehyde acid solution (molecular formula: C
8H
6O
4, molecular weight: 166.13, be a kind of main pollutant in the emulation silk production process, be difficult to biodegradation), leave standstill sampling after 8 hours under the room temperature, use the ultraviolet spectrophotometry analysis, measurement result is as shown in table 1.
8%Fe/ diatomite waste water treating agent behind the processing pollutant earlier with the solution elimination, reclaims 8%Fe/ diatomite.8%Fe/ diatomite was regenerated 1 hour under 250 ℃ of air, the terephthalic acid (TPA) of absorption is decomposed by catalytic oxidation.8%Fe/ diatomite obtains regeneration, continues to recycle.
Embodiment 4
Preparation 10%Fe/ diatomite water treatment agent at first carries out preliminary treatment with diatomite material, pulverizes, and sieves, and selects certain particle diameter, and 20-60 purpose diatomite places 500 ℃ of roastings of Muffle furnace 2 hours, removes wherein volatile component; Adopt equi-volume impregnating then, take by weighing the pretreated 20-60 order of 5g diatomite, measuring diatomaceous saturated extent of adsorption needs 7-8mL distilled water for 5g diatomite, and the amount of required Fe element just is: 5*10%=0.50g gets Fe (NO thus
3)
39H
2The amount of O is: (Fe (NO
3)
39H
2O molecular weight/Fe molecular weight) amount=404/56*0.50=3.61g of the required Fe element of * is with 3.61g Fe (NO
3)
39H
2O is dissolved in the 7.5mL distilled water and is mixed with solution, adds the pretreated diatomite of 5g then in the solution that is mixed with, and makes diatomite just in time adsorb to fall Fe (NO fully
3)
39H
2O solution was placed 2 hours under the room temperature, dried 12 hours down for 80 ℃ then, and then 200 ℃ of following roastings 2 hours, promptly got the metal/diatomite waste water treating agent after supporting.
Take by weighing 1.0g 10%Fe/ diatomite waste water treating agent, place the 250mL conical flask, add 100mL then, 60mg/L terephthaldehyde acid solution (molecular formula: C
8H
6O
4, molecular weight: 166.13, be a kind of main pollutant in the emulation silk production process, be difficult to biodegradation), leave standstill sampling after 8 hours under the room temperature, use the ultraviolet spectrophotometry analysis, measurement result is as shown in table 1.
10%Fe/ diatomite waste water treating agent behind the processing pollutant earlier with the solution elimination, reclaims 10%Fe/ diatomite.10%Fe/ diatomite was regenerated 1 hour under 250 ℃ of air, the terephthalic acid (TPA) of absorption is decomposed by catalytic oxidation.10%Fe/ diatomite obtains regeneration, continues to recycle.
The data that embodiment 1-4 is analyzed with ultraviolet spectrophotometry, with compare with single diatomite adsorbant gained data, as shown in table 1, as shown in Table 1, supporting diatomite adsorption capacity behind the active metal component apparently higher than pure diatomite, is single diatomaceous 2.5 times as 5%Fe/ diatomite to the adsorbance of terephthalic acid (TPA).Here adsorbance is defined as the quality of pollutant adsorbed on the unit mass water treatment agent, and unit is mg/g.
Embodiment 5
Preparation 3%Cu/ diatomite water treatment agent at first carries out preliminary treatment with diatomite material, pulverizes, and sieves, and selects certain particle diameter, and 20-60 purpose diatomite places 500 ℃ of roastings of Muffle furnace 2 hours, removes wherein volatile component; Adopt equi-volume impregnating then, take by weighing the pretreated 20-60 order of 5g diatomite, measuring diatomaceous saturated extent of adsorption needs 7-8mL distilled water for 5g diatomite, and the amount of required Cu element just is: 5*3%=0.15g gets Cu (NO thus
3)
23H
2The amount of O is: (Cu (NO
3)
23H
2O molecular weight/Cu molecular weight) amount=242/64*0.15=0.57g of the required Fe element of * is with 0.57g Cu (NO
3)
23H
2O is dissolved in the 8mL distilled water and is mixed with solution, adds the pretreated diatomite of 5g then in the solution that is mixed with, and makes diatomite just in time adsorb to fall Cu (NO fully
3)
23H
2O solution was placed 2 hours under the room temperature, dried 12 hours down for 80 ℃ then, and then 220 ℃ of following roastings 2 hours, promptly got the metal/diatomite waste water treating agent after supporting.
Take by weighing 1.0g 3%Cu/ diatomite waste water treating agent, place the 250mL conical flask, add 100mL then, bright basket solution (molecular formula: C
37H
34N
2Na
2O
9S
3, molecular weight: 792.86, be a kind of colouring agent), leave standstill sampling after 8 hours under the room temperature, use the ultraviolet spectrophotometry analysis, measurement result is as shown in table 2.
Cu/ diatomite waste water treating agent behind the processing pollutant earlier with the solution elimination, reclaims Cu/ diatomite.Cu/ diatomite was regenerated 1 hour under 260 ℃ of air, the bright basket of absorption is decomposed by catalytic oxidation.Cu/ diatomite obtains regeneration, continues to recycle.
Prepare 3%Fe/ diatomite, 3%Zn/ diatomite and each 1.0g of 3%Ni/ diatomite respectively with said method and place the 250mL conical flask respectively, add the bright basket solution (molecular formula: C of 100mg/L
37H
34N
2Na
2O
9S
3, molecular weight: 792.86, be a kind of colouring agent), leaving standstill under the room temperature took a sample after 8 hours analyzes with ultraviolet spectrophotometry, and measurement result is as shown in table 2.
Fe/ diatomite, Zn/ diatomite and Ni/ diatomite waste water treating agent behind the processing pollutant respectively earlier with the solution elimination, reclaim metal/diatomite.Metal/diatomite was regenerated 1 hour under 260 ℃ of air, the bright basket of absorption is decomposed by catalytic oxidation.Metal/diatomite obtains regeneration, continues to recycle.
The data that embodiment 5 usefulness ultraviolet spectrophotometries are analyzed, with compare with single diatomite adsorbant gained data, as shown in table 2, as shown in Table 2, is single diatomaceous 36 times as 3%Cu/ diatomite approximately to the adsorbance of bright basket, and the diatomite adsorption capacity that supports behind the active metal component is higher than single diatomite far away.
Table 1
| Adsorbent | Diatomite | 2%Fe/ diatomite | 5%Fe/ diatomite | 8%Fe/ diatomite | 10%Fe/ diatomite |
| Adsorbance, mg/g | 0.11 | 0.18 | 0.26 | 0.28 | 0.30 |
Table 2
| Adsorbent | Diatomite | 3%Cu/ diatomite | 3%Fe/ diatomite | 3%Zn/ diatomite | 3%Ni/ diatomite |
| Adsorbance, mg/g | 0.15 | 3.96 | 3.57 | 2.89 | 2.15 |
Table 3
| Recycle number of times | Adsorbance, mg/g | |
| Diatomite | 5%Fe/ diatomite | |
| 1 | 0.11 | 0.26 |
| 2 | 0.03 | 0.24 |
| 3 | - | 0.26 |
| 4 | - | 0.22 |
| 5 | - | 0.22 |
| 6 | - | 0.21 |
Claims (3)
1. the metal that recycles/diatomite waste water treating agent is characterized in that by following raw materials by weight percent formulated:
Metallic element: 2-10%;
Diatomite: 90-98%.
2. the metal that recycles as claimed in claim 1/diatomite waste water treating agent is characterized in that: it is raw material that described metallic element adopts the nitrate compound of transition metal Fe, Cu, Zn and Ni, i.e. Fe (NO
3)
39H
2O, Cu (NO
3)
23H
2O, Zn (NO
3)
26H
2O, Ni (NO
3)
26H
2A kind of among the O is raw material.
3. the processing technology of the metal that recycles as claimed in claim 1/diatomite waste water treating agent is characterized in that, comprises the steps:
(1) diatomite material is carried out preliminary treatment, pulverize, sieve, select certain particle diameter, 20-60 purpose diatomite places 500 ℃ of roastings of Muffle furnace 2 hours;
(2) preparation of metal/diatomite water treatment agent, adopt equi-volume impregnating, nitrate compound is dissolved in is configured to solution in the distilled water, add pretreated 20-60 order diatomite then, make diatomite just in time adsorb to fall nitrate compound solution fully, placed 2 hours under the room temperature, dried 12 hours down for 80 ℃ then, and then, promptly get the metal/diatomite waste water treating agent after supporting 150-300 ℃ of following roasting 2 hours;
(3) metal/diatomite water treatment agent regeneration, metal/diatomite waste water treating agent after using is reclaimed, under 150-300 ℃ of air, regenerated 1 hour then, the pollutant that is adsorbed on the diatomite surface is decomposed by catalytic oxidation, metal/diatomite waste water treating agent obtains regeneration, continues to reuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100706448A CN101185876A (en) | 2007-09-06 | 2007-09-06 | Circular used metal/tripolite wastewater processing agent and its processing technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100706448A CN101185876A (en) | 2007-09-06 | 2007-09-06 | Circular used metal/tripolite wastewater processing agent and its processing technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101185876A true CN101185876A (en) | 2008-05-28 |
Family
ID=39478622
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100706448A Pending CN101185876A (en) | 2007-09-06 | 2007-09-06 | Circular used metal/tripolite wastewater processing agent and its processing technique |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180676A (en) * | 2011-01-04 | 2011-09-14 | 厦门建霖工业有限公司 | Preparation method of ceramic balls loaded with nano copper-zinc-silver |
| CN102527343A (en) * | 2012-01-13 | 2012-07-04 | 吉林大学 | Preparation method of kieselguhr composite adsorbent |
| MD4142C1 (en) * | 2010-10-12 | 2012-07-31 | Inst De Chimie Al Academiei De Stiinte A Moldovei | Process for water purification from hydrogen sulfide and sulfides |
| CN103977757A (en) * | 2014-06-05 | 2014-08-13 | 安徽理工大学 | Preparation method of organic waste water adsorption degrading agent |
| CN105891060A (en) * | 2016-05-12 | 2016-08-24 | 绍兴文理学院 | Online wear particle monitoring system adopting electric shock hammer adsorption and adjacent capacitance |
| CN106955686A (en) * | 2017-04-17 | 2017-07-18 | 广东工业大学 | Preparation method and application of ozone oxidation catalyst of diatomite-loaded multi-metal oxide |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD4142C1 (en) * | 2010-10-12 | 2012-07-31 | Inst De Chimie Al Academiei De Stiinte A Moldovei | Process for water purification from hydrogen sulfide and sulfides |
| CN102180676A (en) * | 2011-01-04 | 2011-09-14 | 厦门建霖工业有限公司 | Preparation method of ceramic balls loaded with nano copper-zinc-silver |
| CN102527343A (en) * | 2012-01-13 | 2012-07-04 | 吉林大学 | Preparation method of kieselguhr composite adsorbent |
| CN102527343B (en) * | 2012-01-13 | 2013-07-17 | 吉林大学 | Preparation method of kieselguhr composite adsorbent |
| CN103977757A (en) * | 2014-06-05 | 2014-08-13 | 安徽理工大学 | Preparation method of organic waste water adsorption degrading agent |
| CN103977757B (en) * | 2014-06-05 | 2015-10-07 | 安徽理工大学 | The preparation method of a kind of organic wastewater absorption degradation agent |
| CN105891060A (en) * | 2016-05-12 | 2016-08-24 | 绍兴文理学院 | Online wear particle monitoring system adopting electric shock hammer adsorption and adjacent capacitance |
| CN106955686A (en) * | 2017-04-17 | 2017-07-18 | 广东工业大学 | Preparation method and application of ozone oxidation catalyst of diatomite-loaded multi-metal oxide |
| CN106955686B (en) * | 2017-04-17 | 2020-04-28 | 广东工业大学 | Preparation method and application of ozone oxidation catalyst of diatomite-loaded multi-metal oxide |
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Application publication date: 20080528 |