CN102179233B - Method for preparing heavy metal ion absorbent - Google Patents
Method for preparing heavy metal ion absorbent Download PDFInfo
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- CN102179233B CN102179233B CN201110079550A CN201110079550A CN102179233B CN 102179233 B CN102179233 B CN 102179233B CN 201110079550 A CN201110079550 A CN 201110079550A CN 201110079550 A CN201110079550 A CN 201110079550A CN 102179233 B CN102179233 B CN 102179233B
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- heavy metal
- adsorbent
- charing
- solid product
- absorbent
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Abstract
The invention discloses a method for preparing a heavy metal ion absorbent, which comprises: uniformly mixing sludge from urban sewage treatment plants and low-metamorphic coal; carbonizing the mixture at high temperature; and grinding to obtain an absorbent product. The absorbent is a cheap absorbent material having a good treatment effect on sewage containing heavy metal ions such as lead; and the process is simple, the cost is low, the use effect is desirable, and the promotion and use are easy.
Description
Technical field
The present invention relates to a kind of adsorbent preparation method, especially a kind of adsorbent preparation method who contains heavy metal ion sewage disposal purposes that is applicable to.
Background technology
Heavy metal wastewater thereby is the difficult problem that China trade effluent is handled, and has caused serious environmental to pollute, and the farmland in many places is irrigated because of the water that uses heavy metals exceeding standard, and the grain that causes output is contaminated by heavy metals and can not eat.Absorption method is to handle the effective ways of heavy metal ion-containing waste water.Have at present and adopt the absorption of rice shell to remove copper ion and lead ion in the waste water, but effect is not very good, wherein the clearance of mercury ion only has about 80%, and rice husk is easy in the microorganism decomposition at nature, and adsorbed heavy metal ion can be discharged in the environment again.Also have in addition and adopt the mode of shell widow/glycan series derivates to lead ion absorption, though the effect of this mode is better, this type adsorbent is synthetic comparatively complicated, and cost is very high, is difficult for promoting the use of.
Summary of the invention
Technical problem: the objective of the invention is to overcome the deficiency in the prior art, the preparation method of the special-purpose adsorbent of simple, with low cost, the respond well heavy metal ion of a kind of technology is provided.
Technical scheme: adsorbent for heavy metal preparation method of the present invention: in municipal sludge, allocate the low rank coal that is crushed to below 180 orders into, the butt mass ratio of low rank coal and municipal sludge is: 1:9～5:5; Be that heating charing 20 ~ 40min obtains the charing solid product in 560 ~ 900 ℃ the retort in temperature then, when charing solid product temperature is reduced to room temperature, it pulverized promptly obtain adsorbent for heavy metal.
The granularity of described pulverizing is below 100 orders.
Beneficial effect: the present invention is a primary raw material with the sewage treatment plant dewater sludge, at high temperature carries out charing after allocating levigate low rank coal into and mixing, and promptly obtains the mud carbonaceous adsorbent through grinding again.This adsorbent can be applicable to the adsorption treatment of leaded simulated wastewater: get 50ml and contain Pb
2+Initial concentration is that the simulated wastewater of 35mg/L places 250ml tool plug conical flask, is 150r/min in frequency of oscillation, and adsorption time is 1h, and temperature is 303K, and pH=7, adsorbent dosage are under the condition of 0.15g, Pb
2+Clearance can reach 94.98%.This adsorbent manufacture craft is simple, with low cost, result of use is good, is easy to promote the use of, and has extensive practicality.
The specific embodiment
Embodiment one: the Lingwu dross coal of low metamorphic grade is crushed to below 180 orders; According to the butt mass ratio of low rank coal and municipal sludge is that the mixed of 3:7 is even; Heating charing 40min obtains the charing solid product, when charing solid product temperature is reduced to room temperature in the retort in 900 ℃; It is crushed to below 100 orders, promptly obtains the adsorbent for heavy metal product.
Embodiment two: the Lingwu dross coal of low metamorphic grade is crushed to below 180 orders; According to the butt mass ratio of low rank coal and municipal sludge is that the mixed of 2:8 is even; Heating charing 30min obtains the charing solid product, when charing solid product temperature is reduced to room temperature in the retort in 800 ℃; It is crushed to below 100 orders, promptly obtains the adsorbent for heavy metal product.
Embodiment three: Huangxian county brown coal powder of low metamorphic grade is broken to below 180 orders; According to the butt mass ratio of low rank coal and municipal sludge is that the mixed of 1:9 is even; Heating charing 20min obtains the charing solid product, when charing solid product temperature is reduced to room temperature in the retort in 700 ℃; It is crushed to below 100 orders, promptly obtains the adsorbent for heavy metal product.
Embodiment four: the Lingwu dross coal of low metamorphic grade is crushed to below 180 orders; According to the butt mass ratio of low rank coal and municipal sludge is that the mixed of 5:5 is even; Heating charing 35min obtains the charing solid product, when charing solid product temperature is reduced to room temperature in the retort in 560 ℃; It is crushed to below 100 orders, promptly obtains the adsorbent for heavy metal product.
Claims (2)
1. adsorbent for heavy metal preparation method, it is characterized in that: in municipal sludge, allocate the low rank coal that is crushed to below 180 orders into, the butt mass ratio of low rank coal and municipal sludge is: 1:9～5:5; Be that heating charing 20 ~ 40min obtains the charing solid product in 560 ~ 900 ℃ the retort in temperature then, when charing solid product temperature is reduced to room temperature, the charing solid product pulverized promptly obtain adsorbent for heavy metal.
2. adsorbent for heavy metal preparation method according to claim 1 is characterized in that: the granularity that described charing solid product is pulverized is below 100 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110079550A CN102179233B (en) | 2011-03-31 | 2011-03-31 | Method for preparing heavy metal ion absorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110079550A CN102179233B (en) | 2011-03-31 | 2011-03-31 | Method for preparing heavy metal ion absorbent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102179233A CN102179233A (en) | 2011-09-14 |
| CN102179233B true CN102179233B (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201110079550A Expired - Fee Related CN102179233B (en) | 2011-03-31 | 2011-03-31 | Method for preparing heavy metal ion absorbent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102179233B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962031A (en) * | 2013-01-07 | 2013-03-13 | 浙江大学 | Preparation and application of carbon nanotube-containing extraction fiber |
| CN106215857A (en) * | 2016-09-08 | 2016-12-14 | 天津大学 | A kind of modified coal slag adsorbent and preparation method and application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101045599A (en) * | 2007-04-30 | 2007-10-03 | 重庆大学 | Method for treating sludge heavy metal |
| CN101844071A (en) * | 2010-05-26 | 2010-09-29 | 高永宏 | Absorption material prepared from paper making mud |
-
2011
- 2011-03-31 CN CN201110079550A patent/CN102179233B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101045599A (en) * | 2007-04-30 | 2007-10-03 | 重庆大学 | Method for treating sludge heavy metal |
| CN101844071A (en) * | 2010-05-26 | 2010-09-29 | 高永宏 | Absorption material prepared from paper making mud |
Non-Patent Citations (2)
| Title |
|---|
| R. Cenni et al..Study on trace metal partitioning in pulverized combustion of bituminous coal and dry sewage sludge.《Waste Management》.1998,第18卷433-444. * |
| 张双全 等.城市污泥与秸秆共热解制热活性炭吸附炭吸附剂——城市污泥处理新思路.《中国科技成果》.2010,(第04期),第29-31页. * |
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| Publication number | Publication date |
|---|---|
| CN102179233A (en) | 2011-09-14 |
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Granted publication date: 20121024 Termination date: 20160331 |