CN103920478A - Process for preparation of adsorbent from sludge - Google Patents
Process for preparation of adsorbent from sludge Download PDFInfo
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- CN103920478A CN103920478A CN201310014401.8A CN201310014401A CN103920478A CN 103920478 A CN103920478 A CN 103920478A CN 201310014401 A CN201310014401 A CN 201310014401A CN 103920478 A CN103920478 A CN 103920478A
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- adsorbent
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Abstract
The invention provides a process for preparation of an adsorbent from sludge. The process includes: adding a certain amount of activating drug into dry sludge, then conducting standing drying, and performing carbonization, thereby obtain the activated carbon-like adsorbent. The process effectively realizes harmless, low-cost and resource-based sludge treatment, and has good environmental and social benefits. The process selects Zncl2 as a chemical activator, and through the steps of activation, carbonization, cooling, screening and packaging, etc., the adsorbent can be obtained.
Description
Technical field
This patent utilizes the large amount of organic containing in mud, and dewatered sludge is added to a certain amount of activation medicine, after standing oven dry, carries out carbonization, can make the adsorbent of similar active carbon, has good environmental benefit and social benefit.
Background technology
Along with the continuous quickening of urbanization process, urban industry waste water and sanitary sewage increasing, the output of sewage sludge also increases sharply.The sewage sludges of a large amount of accumulation, have not only taken huge urban size, and wherein contained oxious component has become large public hazards that affect urban health as heavy metal, pathogen, parasite, organic pollution and foul smell etc.Therefore countries in the world are all attached great importance to the disposal of mud.
The at present main landfill of processing method of municipal sludge, burning, agricultural etc.But the expense that these traditional processing methods drop into is all higher, if process badly, not only can bring pollution to environment, also can cause the waste of resource.
Summary of the invention
To the object of the invention is the large amount of organic containing in mud in order effectively utilizing, it to be processed into the adsorbent of similar active carbon, realize innoxious, cheapization and the resource of Treatment of Sludge.
The general principle of utilizing mud to prepare adsorbent is in mud, to contain large amount of organic, and its content can increase along with the raising of social development levels.Mud has the objective condition that is processed to similar active carbon and adsorbent, and dewatered sludge is added to a certain amount of activation medicine, after standing oven dry, carries out carbonization, can make carbon-bearing adsorbent.The acticarbon of being made up of mud has very high clearance to some heavy metal ion, is a kind of good organic waste water treatment agent.If can not regenerate with the adsorbent of crossing, can burn under control tail gas condition as fuel.Treated regeneration sludge can be removed colloid suspension, coloring ingredient, organic matter, P, heavy metal etc., particularly, except P effect is remarkable, if organic sludge is combined to processing with inorganic mud, can greatly improve the quality of mud.Utilize the outer absorption of born of the same parents or born of the same parents' wind absorption of activated sludge and residual active sludge, can very effectively remove the heavy metal in waste water, and isolate and do metal bacterium.If by first activated sludge charing, then carry out the physically activated new material post processing sewage of making by steam, it has good effect to heavy metal etc.Make microbial flocculant if activated sludge is extracted to domestication, can be used for removing suspension, decolour and carry out water-oil separating, and can improve the sedimentation function of mud, degradation of organic substances.
According to object of the present invention, the detailed description of the invention utilize mud as raw material, adopt chemical activation method to prepare the technological process of mud adsorbent.
Utilize the adsorbent of this explained hereafter to have lipophilic-hydrophobic property, suspensibility is 100%, has flourishing macropore, and clearance can reach 99.6%, and adsorbent can absorb 14.2g crude oil, and its recycle-water surface oil spilling is best.
Brief description of the drawings
Fig. 1 is the process chart that mud provided by the invention is produced adsorbent;
Detailed description of the invention
To a preferred embodiment of the present invention will be described in detail, should be appreciated that following illustrated preferred embodiment, only for description and interpretation the present invention, is not intended to limit the present invention below in conjunction with accompanying drawing.
Fig. 1 is the process chart that mud provided by the invention is produced adsorbent, as shown in Figure 1:
P1: preparation activator solution activates
This process selection Zncl
2be mainly used to dehydration as chemical activating agent, prevent from the tar that produces in pyrolytic process being conducive in addition promote cellulosic degraded, thereby produce porous prosperity, active carbon that phosphorus content is high.The concentration of activator is 3mol/L, because when concentration iodine sorption value maximum during in 40% left and right, when concentration exceedes 40%, iodine sorption value declines to some extent, and the solid-to-liquid ratio of dewatered sludge and activator solution is modulated to 1:2.5, is to activate about 45 minutes under the condition of 500 DEG C in temperature, soak time is too short, it is incomplete that priming reaction can carry out, and soak time exceedes 45 minutes, and iodine sorption value is by a declining curve.
P2: mud completes charing in retort
Carbonization temperature has a great impact adsorbent absorption property, at 400 DEG C---and within the scope of 500 DEG C, iodine number is higher, and in the time that temperature exceedes 600 DEG C, along with the rising of temperature, the adsorption capacity of adsorbent declines thereupon.Therefore this flow process is used at 400 DEG C---and at the temperature of 500 DEG C, carry out charing, carbonization time is about 5 hours.If charing 3---3.5 hours, the suspensibility of its product only had 80% left and right, when charing 4---and 5 hours time, the suspensibility of its product can reach 100%, also needs to consider that switch gate has strengthened cooling degree in fill process, therefore select the carbonization time of 5 hours.
P3: naturally cool to room temperature
P4: disintegrating machine grinds
P5: vibrating sieving machine is sieved into the product of different-grain diameter
The product that sieve cut-off footpath is 0.6 ~ 0.9mm
P6: use after packing with screen cloth
P7: the waste gas that charing produces is through outdoor water condensation absorption tower absorption cleaning
P8: the waste gas after purification is directly discharged in atmosphere through smokejack
P9: the waste gas that liquefied gas produces is directly discharged in atmosphere through smokejack
Although above the present invention is had been described in detail, the invention is not restricted to this, those skilled in the art can carry out various amendments according to principle of the present invention.Therefore, all amendments of doing according to the principle of the invention, all should be understood to fall into protection scope of the present invention.
Claims (2)
1. utilize mud to extract a technique for adsorbent, it is characterized in that:
Utilize the large amount of organic containing in mud, dewatered sludge is added to a certain amount of activation medicine, after standing oven dry, carry out carbonization, can make the adsorbent of similar active carbon.
2. a kind of technique of utilizing mud to extract adsorbent according to claim 1, is characterized in that, described step is specially:
Utilize Zncl2 as chemical activating agent;
The concentration of activator is in 40% left and right;
The solid-to-liquid ratio of dewatered sludge and activator solution is modulated to 1:2.5;
Be to activate about 45 minutes under the condition of 500 DEG C in temperature;
At 400 DEG C---carry out carbonization within the scope of 500 DEG C;
Carbonization time is about 5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014401.8A CN103920478A (en) | 2013-01-16 | 2013-01-16 | Process for preparation of adsorbent from sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014401.8A CN103920478A (en) | 2013-01-16 | 2013-01-16 | Process for preparation of adsorbent from sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103920478A true CN103920478A (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310014401.8A Pending CN103920478A (en) | 2013-01-16 | 2013-01-16 | Process for preparation of adsorbent from sludge |
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| CN (1) | CN103920478A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944570A (en) * | 2015-06-16 | 2015-09-30 | 广州大学 | Preparation method and application of sludge-based activated charcoal |
| CN106365398A (en) * | 2016-11-25 | 2017-02-01 | 贵州环科环境生态研发有限公司 | Sludge recycling method |
| CN106390938A (en) * | 2016-09-30 | 2017-02-15 | 东莞市联洲知识产权运营管理有限公司 | Manganese-dioxide-modified sludge activated carbon with abundant phosphorus accumulating bacteria and method for preparing manganese-dioxide-modified sludge activated carbon |
-
2013
- 2013-01-16 CN CN201310014401.8A patent/CN103920478A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944570A (en) * | 2015-06-16 | 2015-09-30 | 广州大学 | Preparation method and application of sludge-based activated charcoal |
| CN106390938A (en) * | 2016-09-30 | 2017-02-15 | 东莞市联洲知识产权运营管理有限公司 | Manganese-dioxide-modified sludge activated carbon with abundant phosphorus accumulating bacteria and method for preparing manganese-dioxide-modified sludge activated carbon |
| CN106365398A (en) * | 2016-11-25 | 2017-02-01 | 贵州环科环境生态研发有限公司 | Sludge recycling method |
| CN106365398B (en) * | 2016-11-25 | 2019-09-20 | 贵州环科环境工程有限公司 | A kind of method that sludge circulation utilizes |
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Application publication date: 20140716 |