CN102180537A - Preparation method and application of composite nano displacer for complexing heavy metal - Google Patents
Preparation method and application of composite nano displacer for complexing heavy metal Download PDFInfo
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- CN102180537A CN102180537A CN 201110082101 CN201110082101A CN102180537A CN 102180537 A CN102180537 A CN 102180537A CN 201110082101 CN201110082101 CN 201110082101 CN 201110082101 A CN201110082101 A CN 201110082101A CN 102180537 A CN102180537 A CN 102180537A
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- displacer
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Abstract
The invention discloses a preparation method and application of a composite nano displacer for complexing heavy metals. According to the preparation method of the composite nano displacer for complexing heavy metals, the composite nano displacer for complexing heavy metals is obtained by uniformly mixing NaOH, Ca(OH)2, PAM and nano SiO2 according to a mass part ratio of 1:(1.07-1.51):(0.10-0.16):(0.011-0.015). The composite nano displacer for complexing heavy metals is used for displacing heavy metals, and a displacing method comprises the following steps of: 1) putting the composite nano displacer for complexing heavy metals into wastewater according to a ratio of 1.3 to 5.2g/L; 2) stirring the wastewater with the composite nano displacer for complexing heavy metals, then standing the wastewater to ensure that the heavy metals can be displaced from complex ions in the composite nano displacer for complexing heavy metals, and depositing the heavy metals; and 3) removing the deposited heavy metals. The preparation method of the displacer is simple and convenient, and is high in preparation efficiency and low in cost. The composite nano displacer for complexing heavy metals can be used for treating the wastewater containing high-stability complex heavy metals, and has an obvious displacement effect.
Description
Technical field
The present invention is a kind of preparation method and application thereof of complexing heavy metal composite Nano displacer, belongs to the preparation method of complexing heavy metal composite Nano displacer and the innovative technology of application thereof.
Background technology
The method of existing removal complexing heavy metal has reverse osmosis method, ion exchange method, heavy metal chelating agent, active carbon adsorption etc., these method cost height, some trapping agent does not have effect to the removal of some heavy metal, and this processing to the trade effluent that contains various heavy has limitation.
Summary of the invention
The objective of the invention is to consider the problems referred to above and provide a kind of simple and convenient, preparation efficiency height, the preparation method of the complexing heavy metal composite Nano displacer that cost is low.
Another object of the present invention is to provide a kind of application method of complexing heavy metal composite Nano displacer.Can be used to handle the waste water that contains high stability complexing heavy metal with complexing heavy metal composite Nano displacer of the present invention, replacement result is remarkable.
Technical scheme of the present invention is: the preparation method of complexing heavy metal composite Nano displacer of the present invention is with NaOH, Ca (OH)
2, PAM and nanometer SiO
2According to ratio of quality and the number of copies is that the ratio of 1:1.07 ~ 1.51:0.10 ~ 0.16:0.011 ~ 0.015 is mixed, and makes it to mix promptly.
Above-mentioned NaOH, Ca (OH)
2, PAM and nanometer SiO
2Ratio of quality and the number of copies be 1:1.15:0.103:0.012.
The application of complexing heavy metal composite Nano displacer of the present invention is used to replace heavy metal.
The method that complexing heavy metal composite Nano displacer of the present invention is used to replace heavy metal comprises the steps:
1) ratio of complexing heavy metal composite Nano displacer with 1.3g/L ~ 5.2g/L is added in the waste water;
2) waste water that will add complexing heavy metal composite Nano displacer stirs, and leaves standstill again, and heavy metal will cement out from the complexing ion of complexing heavy metal composite Nano displacer, and precipitation;
3) sedimentary heavy metal is removed.
Above-mentioned steps 2) whipping process in is the rotating speed stirring 2min ~ 3min with 250r/min ~ 350r/min, and the rotating speed with 60r/min ~ 90r/min stirs 6min ~ 10min again.
Above-mentioned steps 2) whipping process in is that whipping process is the rotating speed stirring 2min with 300r/min, and the rotating speed with 80r/min stirs 7min again.
Above-mentioned steps 2) time of repose in is 20min ~ 70min.
Above-mentioned steps 2) time of repose in is 30min.
The preparation method of complexing heavy metal composite Nano displacer of the present invention is simple and convenient, with complexing heavy metal composite Nano displacer of the present invention displacement heavy metal than methods such as conventional reverse osmosis, ion-exchange, heavy metal chelating agent more economically, save cost, save energy consumption, and applied widely, heavy metals such as copper, arsenic, nickel, lead, zinc are all had good replacement result.The preparation method of complexing heavy metal composite Nano displacer of the present invention is simple and convenient, the preparation efficiency height, and cost is low.Complexing heavy metal composite Nano displacer of the present invention can be used to handle the waste water that contains high stability complexing heavy metal, and replacement result is remarkable.
Embodiment
Embodiment 1:
The preparation method of complexing heavy metal composite Nano displacer of the present invention is with NaOH, Ca (OH)
2, PAM and nanometer SiO
2According to ratio of quality and the number of copies is that the ratio of 1:1.07 ~ 1.51:0.10 ~ 0.16:0.011 ~ 0.015 is mixed, and makes it to mix promptly.
In the present embodiment, above-mentioned NaOH, Ca (OH)
2, PAM and nanometer SiO
2Ratio of quality and the number of copies be 1:1.15:0.103:0.012.
The application of complexing heavy metal composite Nano displacer of the present invention is used to replace heavy metal.
The method that complexing heavy metal composite Nano displacer of the present invention is used to replace heavy metal comprises the steps:
1) ratio of complexing heavy metal composite Nano displacer with 1.3g/L ~ 5.2g/L is added in the waste water; In the present embodiment, the ratio of complexing heavy metal composite Nano displacer with 3g/L is added in the waste water;
2) waste water that will add complexing heavy metal composite Nano displacer stirs, and leaves standstill again, and heavy metal will cement out from the complexing ion of complexing heavy metal composite Nano displacer, and precipitation;
3) sedimentary heavy metal is removed.
Above-mentioned steps 2) whipping process in is the rotating speed stirring 2min ~ 3min with 250r/min ~ 350r/min, and the rotating speed with 60r/min ~ 90r/min stirs 6min ~ 10min again.In the present embodiment, above-mentioned steps 2) whipping process in is that whipping process is that rotating speed with 300r/min stirs 2min, and the rotating speed with 80r/min stirs 7min again.
Above-mentioned steps 2) time of repose in is 20min ~ 70min.In the present embodiment, above-mentioned steps 2) time of repose in is 30min.
According to above method operation, the complexing removal rate of heavy metal can reach more than 95%.
Be the particular case of replacing different heavy metals with complexing heavy metal composite Nano displacer of the present invention below:
The removal effect of table one composite Nano displacer paratartaric acid copper
(former water copper ion concentration 100mg/L)
| Mol ratio [Ca 2+]/[Cu 2+] | 1 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 |
| Residual copper concentration | 1.61 | 0.72 | 0.57 | 0.35 | 0.37 | 0.33 | 0.32 | 0.37 |
| Copper removal rate | 96.39% | 98.28% | 98.93% | 99.45% | 99.58% | 99.67% | 99.68% | 99.63% |
Table two composite Nano displacer is to the removal effect of ZnEDTA
(former water zinc ion concentration 100mg/L)
| Mol ratio [Ca 2+]/[Zn 2+] | 1 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 |
| Residual copper concentration | 4.07 | 2.62 | 1.07 | 0.65 | 0.46 | 0.26 | 0.33 | 0.35 |
| Copper removal rate | 95.93% | 97.38% | 98.93% | 99.35% | 99.54% | 99.74% | 99.67% | 99.65% |
Table three composite Nano displacer is to the removal effect of NiEDTA
(former water nickel ion concentration 100mg/L)
| Mol ratio [Ca 2+]/[Ni 2+] | 1 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 |
| Residual copper concentration | 2.57 | 2.08 | 1.26 | 0.54 | 0.42 | 0.29 | 0.26 | 0.29 |
| Copper removal rate | 97.43% | 97.92% | 98.74% | 99.46% | 99.58% | 99.71% | 99.74% | 99.71% |
More than be the experiment effect of composite Nano displacer to several typical complexing heavy metals, from experimental data as can be seen, the composite Nano displacer all has significant replacement result to various complexing heavy metals (comprising the EDTA solution that complex ability is extremely strong).
Embodiment 2:
The preparation method of complexing heavy metal composite Nano displacer of the present invention is with NaOH, Ca (OH)
2, PAM and nanometer SiO
2According to ratio of quality and the number of copies is that the ratio of 1:1.10:0.15:0.013 is mixed, and makes it to mix promptly.
The application of complexing heavy metal composite Nano displacer of the present invention comprises the steps:
1) ratio of complexing heavy metal composite Nano displacer with 1.5g/L is added in the waste water;
2) waste water that will add complexing heavy metal composite Nano displacer stirs, and leaves standstill again, and heavy metal will cement out from the complexing ion of complexing heavy metal composite Nano displacer, and precipitation;
3) sedimentary heavy metal is removed.
Above-mentioned steps 2) whipping process in is the rotating speed stirring 2min with 300r/min, and the rotating speed with 80r/min stirs 9min again.
In the present embodiment, above-mentioned steps 2) time of repose in is 40min.
Embodiment 3:
The preparation method of complexing heavy metal composite Nano displacer of the present invention is with NaOH, Ca (OH)
2, PAM and nanometer SiO
2According to ratio of quality and the number of copies is that the ratio of 1:1.07:0.16:0.011 is mixed, and makes it to mix promptly.
The application of complexing heavy metal composite Nano displacer of the present invention comprises the steps:
1) ratio of complexing heavy metal composite Nano displacer with 5.2g/L is added in the waste water;
2) waste water that will add complexing heavy metal composite Nano displacer stirs, and leaves standstill again, and heavy metal will cement out from the complexing ion of complexing heavy metal composite Nano displacer, and precipitation;
3) sedimentary heavy metal is removed.
Above-mentioned steps 2) whipping process in is the rotating speed stirring 2min with 250r/min, and the rotating speed with 60r/min stirs 10min again.
In the present embodiment, above-mentioned steps 2) time of repose in is 20min.
Embodiment 4:
The preparation method of complexing heavy metal composite Nano displacer of the present invention is with NaOH, Ca (OH)
2, PAM and nanometer SiO
2According to ratio of quality and the number of copies is that the ratio of 1:1.51:0.10:0.015 is mixed, and makes it to mix promptly.
The application of complexing heavy metal composite Nano displacer of the present invention comprises the steps:
1) ratio of complexing heavy metal composite Nano displacer with 1.3g/L is added in the waste water;
2) waste water that will add complexing heavy metal composite Nano displacer stirs, and leaves standstill again, and heavy metal will cement out from the complexing ion of complexing heavy metal composite Nano displacer, and precipitation;
3) sedimentary heavy metal is removed.
Above-mentioned steps 2) whipping process in is the rotating speed stirring 3min with 350r/min, and the rotating speed with 90r/min stirs 6min again.
In the present embodiment, above-mentioned steps 2) time of repose in is 70min.
Claims (8)
1. the preparation method of a complexing heavy metal composite Nano displacer is characterized in that it being with NaOH, Ca (OH)
2, PAM and nanometer SiO
2According to ratio of quality and the number of copies is that the ratio of 1:1.07 ~ 1.51:0.10 ~ 0.16:0.011 ~ 0.015 is mixed, and makes it to mix promptly.
2. the preparation method of complexing heavy metal composite Nano displacer according to claim 1 is characterized in that above-mentioned NaOH, Ca (OH)
2, PAM and nanometer SiO
2Ratio of quality and the number of copies be 1:1.15:0.103:0.012.
3. the application of a complexing heavy metal composite Nano displacer according to claim 1 is characterized in that being used to replace heavy metal.
4. the application of complexing heavy metal composite Nano displacer according to claim 3, the method that it is characterized in that being used to replacing heavy metal comprises the steps:
1) ratio of complexing heavy metal composite Nano displacer with 1.3g/L ~ 5.2g/L is added in the waste water;
2) waste water that will add complexing heavy metal composite Nano displacer stirs, and leaves standstill again, and heavy metal will cement out from the complexing ion of complexing heavy metal composite Nano displacer, and precipitation;
3) sedimentary heavy metal is removed.
5. the application of complexing heavy metal composite Nano displacer according to claim 4, it is characterized in that above-mentioned steps 2) in whipping process be to stir 2min ~ 3min with the rotating speed of 250r/min ~ 350r/min, the rotating speed with 60r/min ~ 90r/min stirs 6min ~ 10min again.
6. the application of complexing heavy metal composite Nano displacer according to claim 5 is characterized in that above-mentioned steps 2) in whipping process be that whipping process is to stir 2min with the rotating speed of 300r/min, the rotating speed with 80r/min stirs 7min again.
7. the application of complexing heavy metal composite Nano displacer according to claim 4 is characterized in that above-mentioned steps 2) in time of repose be 20min ~ 70min.
8. the application of complexing heavy metal composite Nano displacer according to claim 7 is characterized in that above-mentioned steps 2) in time of repose be 30min.
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| CN 201110082101 CN102180537A (en) | 2011-04-01 | 2011-04-01 | Preparation method and application of composite nano displacer for complexing heavy metal |
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|---|---|---|---|
| CN 201110082101 CN102180537A (en) | 2011-04-01 | 2011-04-01 | Preparation method and application of composite nano displacer for complexing heavy metal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045140A (en) * | 2014-06-26 | 2014-09-17 | 来宾华锡冶炼有限公司 | Method for preparing smelting wastewater heavy metal ion displacer |
| CN104310508A (en) * | 2014-10-31 | 2015-01-28 | 广东工业大学 | Wastewater treating agent |
| CN106915811A (en) * | 2015-12-28 | 2017-07-04 | 南京源泉环保科技股份有限公司 | A kind of trivalent chromium passivation washings contact break agent and preparation method and application |
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| CN101704570A (en) * | 2009-11-18 | 2010-05-12 | 深圳市深港产学研环保工程技术股份有限公司 | Sewage treatment flocculating agent and using method thereof |
| CN101723523A (en) * | 2008-10-24 | 2010-06-09 | 中国石油化工股份有限公司 | Treatment method for dry acrylic fiber production wastewater |
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2011
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1594127A (en) * | 2004-06-25 | 2005-03-16 | 中国海洋大学 | Flocculant for sewage treatment |
| CN101723523A (en) * | 2008-10-24 | 2010-06-09 | 中国石油化工股份有限公司 | Treatment method for dry acrylic fiber production wastewater |
| CN101704570A (en) * | 2009-11-18 | 2010-05-12 | 深圳市深港产学研环保工程技术股份有限公司 | Sewage treatment flocculating agent and using method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045140A (en) * | 2014-06-26 | 2014-09-17 | 来宾华锡冶炼有限公司 | Method for preparing smelting wastewater heavy metal ion displacer |
| CN104310508A (en) * | 2014-10-31 | 2015-01-28 | 广东工业大学 | Wastewater treating agent |
| CN104310508B (en) * | 2014-10-31 | 2016-08-17 | 广东工业大学 | A kind of waste water treating agent |
| CN106915811A (en) * | 2015-12-28 | 2017-07-04 | 南京源泉环保科技股份有限公司 | A kind of trivalent chromium passivation washings contact break agent and preparation method and application |
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Application publication date: 20110914 |