CN102107872A - Process for preparing active carbon by adding husks into chemical sludge - Google Patents
Process for preparing active carbon by adding husks into chemical sludge Download PDFInfo
- Publication number
- CN102107872A CN102107872A CN201110052074.6A CN201110052074A CN102107872A CN 102107872 A CN102107872 A CN 102107872A CN 201110052074 A CN201110052074 A CN 201110052074A CN 102107872 A CN102107872 A CN 102107872A
- Authority
- CN
- China
- Prior art keywords
- sludge
- drying
- active carbon
- technology according
- washing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 43
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 15
- 239000010903 husk Substances 0.000 title claims abstract description 6
- 239000000126 substance Substances 0.000 title abstract description 14
- 238000004519 manufacturing process Methods 0.000 title abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 23
- 230000004913 activation Effects 0.000 claims abstract description 19
- 238000005406 washing Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000000197 pyrolysis Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 3
- 238000005516 engineering process Methods 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 13
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 11
- 238000003889 chemical engineering Methods 0.000 claims description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 235000013399 edible fruits Nutrition 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000007598 dipping method Methods 0.000 claims description 5
- 238000010926 purge Methods 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 4
- 244000144725 Amygdalus communis Species 0.000 claims description 3
- 235000011437 Amygdalus communis Nutrition 0.000 claims description 3
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 3
- 244000060011 Cocos nucifera Species 0.000 claims description 3
- 235000020224 almond Nutrition 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- DPLVEEXVKBWGHE-UHFFFAOYSA-N potassium sulfide Chemical compound [S-2].[K+].[K+] DPLVEEXVKBWGHE-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 239000011592 zinc chloride Substances 0.000 claims description 2
- 235000005074 zinc chloride Nutrition 0.000 claims description 2
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 7
- 239000010865 sewage Substances 0.000 abstract description 6
- 239000002920 hazardous waste Substances 0.000 abstract description 4
- 230000001988 toxicity Effects 0.000 abstract description 4
- 231100000419 toxicity Toxicity 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000003213 activating effect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000003463 adsorbent Substances 0.000 abstract 1
- 238000010000 carbonizing Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 238000002386 leaching Methods 0.000 abstract 1
- 239000002912 waste gas Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000002361 compost Substances 0.000 description 3
- 238000010828 elution Methods 0.000 description 3
- 239000002574 poison Substances 0.000 description 3
- 231100000614 poison Toxicity 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a process for preparing active carbon by adding husks into chemical sludge. The process comprises the following steps of: drying residual sludge which is generated from sewage treatment in chemical industry and serves as a raw material; adding the husks; grinding; adding an activating agent; drying; performing carbonizing activation under the protection of inert gases; and cooling, washing and drying to prepare sludge-based active carbon. The active carbon is prepared from a great deal of the residual sludge which is generated from sewage treatment in chemical industry and serves as the raw material, so the discharge value of the residual sludge in the chemical industry is reduced, preparation cost of an active carbon adsorbent is reduced, and obvious environmental and economic benefits are achieved. The heavy metal concentration of the prepared active carbon is lower than the highest allowable leachate concentration stated in national standard GB 5085.3-2007 (hazardous waste identification standard leaching toxicity identification); and under a high-temperature pyrolysis condition, organic matters in the sludge can be completely mineralized. The active carbon prepared by the process can be applied in the fields of wastewater treatment, waste gas absorption and the like and has a wide market prospect.
Description
Technical field
The present invention relates to a kind of disposal of resources of industrial solid castoff, relate in particular to a kind of chemical engineering sludge and add the technology that shell prepares gac.
Background technology
The mud of chemical industry is not only bulky, and organic poison content height, and particle is thin, is cotton-shaped colloidal structure, has high-hydrophilic.Surplus the existing big or small chemical industrial park 1000 of China, have family surplus the big or small chemical enterprise 100,000.These chemical enterprises produce tens thousand of tons excess sludge every day, and the water ratio of mud is up to more than 95%, and mud is after the belt press filtration, and water ratio reduces to 70～85%, because of it contains various organic poisons and heavy metal." national Hazardous wastes register " regulation according to the up-to-date promulgation of China, the excess sludge that produces in the industry wastewater treatment process such as chemical industry, medicine and agricultural chemicals is dangerous solid waste, must send the Hazardous wastes disposal center of qualification to focus on, about 2000 yuan/ton of disposal costs.
China's chemical engineering sludge burning disposal expense height, many chemical enterprises transfer to adopt landfill or compost treatment excess sludge, owing to contain a large amount of organic poisons in the mud, landfill or compost easily produce serious secondary pollution, the harm ecotope, and compost has taken a large amount of farmlands.How therefore research and development, more effectively dispose municipal sludge at the economy of toxicity mud, efficient treatment technology, and it is the problem that the environmental protection field presses for solution that municipal sludge is turned waste into wealth.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, and provide a kind of chemical engineering sludge to add the technology that shell prepares gac, in easy mode mud is carried out carbonization-activation and handle, the carbonization-activation material that obtains can substitute gac and use, and realizes the recycling sludge utilization.
Technical scheme of the present invention is: a kind of chemical engineering sludge adds the technology that shell prepares gac, and its concrete steps are as follows:
(1), with after the chemical engineering sludge drying behind the belt filter-press dehydration, obtain dewatered sludge;
(2), adding the dry fruit shell in dewatered sludge obtains mixture, grinding again;
(3), add activation solution, dipping activation under 50～100 ℃ temperature, soak time is 2～10h, the stirring while activate; Dry then;
(4), with rare gas element as the protection gas, at 600～900 ℃ of pyrolysis 0.5～5h;
(5), cooling, washing, drying, make active sludge carbon.
Drying temperature in preferred steps (1) and (3) is 105～120 ℃, and be 4～24h time of drying.Drying process in the step (5) is selected the ordinary method drying.
Preferred described dry fruit shell is at least a kind of in coconut husk, almond or the nut-shell; Wherein in the per kilogram dewatered sludge, the addition of dry fruit shell is 5～30g; Median size after mixture grinds is 0.15～1mm.
Preferred described activation solution is at least a kind of in zinc chloride, potassium hydroxide or the potassium sulfide aqueous solution; Wherein the concentration of activation solution is 1～5mol/L; In the per kilogram dewatered sludge, the add-on of activation solution is 0.5～2L.
Stir speed (S.S.) after the preferred adding activation solution is 100～200r/min.
Preferred described rare gas element is nitrogen, helium or argon gas; The purge rates of rare gas element is 100～200mL/min.
Temperature rise rate in the preferred described pyrolytic process is 10～20 ℃/min.
Preferred described washing process is earlier with the washing of 0.8～1.5mol/L hydrochloric acid soln, drying; Through washing, drying makes active sludge carbon again.
The present invention is the feedstock production gac with the chemical industry dewatered sludge, has broken through traditional prepare gac and prepare the technology of gac with the excess sludge of sanitary sewage with coal, timber.
Beneficial effect:
Compare with traditional sludge disposal and method for preparation of active carbon, have following advantage:
1, is the feedstock production gac with the chemical industry dewatered sludge, broken through and traditional prepare the technology of gac, also opened up the new way that solid waste is handled simultaneously with coal, timber with the excess sludge of sanitary sewage.
2, be the feedstock production gac with the chemical industry dewatered sludge, for the treatment and disposal of mud finds a way out, cheaply can get for Activated Carbon Production has found simultaneously, the raw material of wide material sources, can alleviate China's timber, energy starved contradiction.
3, prepare gac with mud and reached " turning waste into wealth ", " treatment of wastes with processes of wastes against one another " purpose, have good environment and social benefit.Under the high temperature pyrolysis condition, carbonaceous organic material in the mud issues estranged separating in the effect of heat, non-carbon is overflowed with the form of volatile matter, organism in the mud can obtain permineralization, and the heavy metal of gac leaches the leach liquor maximum permissible concentration of concentration far below regulation among the GB GB5085.3-2007 (the Hazardous wastes judging standard leaches toxicity and differentiates).
Embodiment
Embodiment 1:
Get the quality water ratio and be certain petrochemical plant excess sludge of 75%, 120 ℃ of dry 6h take by weighing the 1kg dewatered sludge, add the 5g coconut husk successively, and being ground to median size is 0.71mm, and adding 0.5L concentration again is the potassium hydroxide activation solution of 3mol/L; In 90 ℃ of dipping activation 4h, stir dry (120 ℃ of dry 4h) simultaneously in 150r/min in activation.600 ℃ (temperature rise rate be 15 ℃/min), the purge rates of nitrogen be 150mL/min protection down, pyrolysis 3h.Cooling is with 1mol/L salt acid elution, drying; Washing again gets gac after the drying.Recording specific surface area is: 441m
2/ g, its heavy metal leaches concentration and sees Table 1.
Embodiment 2:
Get the quality water ratio and be certain insecticide factory's sewage treatment plant residual mud of 80%, 110 ℃ of dry 8h take by weighing the 1kg dewatered sludge, add the 15g almond successively, being ground to median size is 0.50mm, adds potassium hydroxide and liquor zinci chloridi that 1L concentration is 3mol/L again; In 85 ℃ of dipping activation 6h, stir dry (110 ℃ of dry 8h) simultaneously in 100r/min in activation.700 ℃ (temperature rise rate be 10 ℃/min), the purge rates of helium be 100mL/min protection down, pyrolysis 2.5h.Cooling is with 0.8mol/L salt acid elution, drying; Washing again gets gac after the drying.Recording specific surface area is: 465m
2/ g, its heavy metal leaches concentration and sees Table 1.
Embodiment 3:
Get the quality water ratio and be certain medication chemistry factory sewage treatment plant residual mud of 85%, 105 ℃ of dry 24h take by weighing the 1kg dewatered sludge, add the 30g peach-pit successively, and being ground to median size is 0.15mm, adds the potassium sulfide solution that 2L concentration is 1mol/L again; In 75 ℃ of dipping activation 8h, activating the while in 200r/min, dry (105 ℃ of dry 24h).800 ℃ (temperature rise rate be 20 ℃/min), the purge rates of argon gas be 180mL/min protection down, pyrolysis 5h.Cooling is with 1.5mol/L salt acid elution, drying; Washing again gets gac after the drying.Recording specific surface area is: 510m
2/ g, its heavy metal leaches concentration and sees Table 1.
Table 1 gac leaches heavy metal content analysis in the leach liquor in the toxicity telling test
Claims (8)
1. a chemical engineering sludge adds the technology that shell prepares gac, and its concrete steps are as follows:
(1), with after the chemical engineering sludge drying behind the belt filter-press dehydration, obtain dewatered sludge;
(2), adding the dry fruit shell in dewatered sludge gets mixture, grinding again;
(3), add activation solution, dipping activation under 50～100 ℃ temperature, soak time is 2～10h, the stirring while activate; Dry then;
(4), with rare gas element as the protection gas, at 600～900 ℃ of pyrolysis 0.5～5h;
(5), cooling, washing, drying, make active sludge carbon.
2. technology according to claim 1 is characterized in that the drying temperature in step (1) and (3) is 105～120 ℃, and be 4～24h time of drying.
3. technology according to claim 1 is characterized in that described dry fruit shell is at least a kind of in coconut husk, almond or the nut-shell; Wherein in the per kilogram dewatered sludge, the addition of dry fruit shell is: 5～30g; Median size after mixture grinds is 0.15～1mm.
4. technology according to claim 1 is characterized in that described activation solution is at least a kind of in zinc chloride, potassium hydroxide or the potassium sulfide aqueous solution; Wherein the concentration of activation solution is 1～5mol/L; In the per kilogram dewatered sludge, the add-on of activation solution is 0.5～2L.
5. technology according to claim 1, the stir speed (S.S.) that it is characterized in that adding after the activation solution is 100～200r/min.
6. technology according to claim 1 is characterized in that described rare gas element is nitrogen, helium or argon gas; The purge rates of rare gas element is 100～200mL/min.
7. technology according to claim 1 is characterized in that the temperature rise rate in the described pyrolytic process is 10～20 ℃/min.
8. technology according to claim 1 is characterized in that described washing process is for washing drying earlier with 0.8～1.5mol/L hydrochloric acid soln; Through washing, drying makes active sludge carbon again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110052074.6A CN102107872A (en) | 2011-03-04 | 2011-03-04 | Process for preparing active carbon by adding husks into chemical sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110052074.6A CN102107872A (en) | 2011-03-04 | 2011-03-04 | Process for preparing active carbon by adding husks into chemical sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102107872A true CN102107872A (en) | 2011-06-29 |
Family
ID=44172170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110052074.6A Pending CN102107872A (en) | 2011-03-04 | 2011-03-04 | Process for preparing active carbon by adding husks into chemical sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102107872A (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102432007A (en) * | 2011-09-23 | 2012-05-02 | 南京工业大学 | Method for preparing activated carbon by physical activation of excess sludge |
| CN102530941A (en) * | 2011-12-16 | 2012-07-04 | 北京工业大学 | Sludge-based activated carbon and preparation method thereof |
| CN102698712A (en) * | 2012-05-14 | 2012-10-03 | 北京工业大学 | Surface modification method of sludge-activated carbon for treating dyeing wastewater |
| CN103130223A (en) * | 2013-03-25 | 2013-06-05 | 东南大学 | Method for preparing activated carbon by using municipal solid waste as raw material |
| CN103435039A (en) * | 2013-08-20 | 2013-12-11 | 西安工程大学 | Method for preparing fallen phoenix tree leaf-doped muddy active carbon by microwave irradiation |
| CN104084142A (en) * | 2014-07-04 | 2014-10-08 | 河海大学 | Preparation method of physiochemically-modified macadimia nutshell adsorbing agent |
| CN104495841A (en) * | 2014-12-09 | 2015-04-08 | 西南石油大学 | Preparation method of walnut shell-doped sludge activated carbon |
| CN105731752A (en) * | 2016-04-29 | 2016-07-06 | 东北大学 | Method for preparing biochar by carrying out copyrolysis on excess sludge and hazelnut shell |
| CN107628619A (en) * | 2017-09-15 | 2018-01-26 | 深圳市水务(集团)有限公司 | A kind of preparation method of the rich nitrogen active sludge carbon of adulterated food leftover bits and pieces |
| CN108033448A (en) * | 2018-01-31 | 2018-05-15 | 西南石油大学 | A kind of coconut husk-sludge composite activated carbon and its preparation method and application |
| CN108046254A (en) * | 2017-12-27 | 2018-05-18 | 济南大学 | A kind of corncob derives active carbon electrode material and preparation method thereof |
| CN108423678A (en) * | 2018-04-17 | 2018-08-21 | 华南农业大学 | A kind of multistage porous carbon materials of superhigh specific surface area and the preparation method and application thereof |
| CN109019598A (en) * | 2018-07-18 | 2018-12-18 | 华南农业大学 | A kind of mixing biomass prepares the method and manufactured three-dimensional porous carbon material and its application of the three-dimensional porous carbon material of high specific capacitance |
| CN109174063A (en) * | 2018-10-17 | 2019-01-11 | 肇庆市珈旺环境技术研究院 | A kind of sludge base adsorbent and preparation method thereof |
| CN109317098A (en) * | 2018-10-25 | 2019-02-12 | 肇庆市珈旺环境技术研究院 | A kind of sludge base mixed adsorbing material and preparation method thereof |
| CN110078070A (en) * | 2019-04-11 | 2019-08-02 | 西安石油大学 | A kind of preparation method of the oily sludge base absorption carbon material for oily waste water treatment |
| CN110342605A (en) * | 2019-07-30 | 2019-10-18 | 苏州飞辉环境科技有限公司 | It is a kind of for adsorbing the sludge-based activated carbon composite material and preparation method of heavy metal in flying ash leachate |
| CN110526549A (en) * | 2019-07-29 | 2019-12-03 | 安徽百和环境技术有限公司 | A kind of betterment of land sludge organism charcoal and preparation method thereof |
| CN113184844A (en) * | 2021-05-25 | 2021-07-30 | 马鞍山钢铁股份有限公司 | Method for preparing activated carbon by using carbon-containing dust and mud |
| CN114749164A (en) * | 2022-04-20 | 2022-07-15 | 江苏美亚科泽过滤技术有限公司 | Preparation method of sulfur dioxide and hydrogen sulfide gas adsorbent |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644495A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for preparing active carbon from urban sewage treatment plant mud |
-
2011
- 2011-03-04 CN CN201110052074.6A patent/CN102107872A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644495A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for preparing active carbon from urban sewage treatment plant mud |
Non-Patent Citations (1)
| Title |
|---|
| 《河北化工》 20061231 郭爱民 等 制药污水处理厂污泥制活性炭的研究 57-59 1-8 , 第1期 2 * |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102432007A (en) * | 2011-09-23 | 2012-05-02 | 南京工业大学 | Method for preparing activated carbon by physical activation of excess sludge |
| CN102530941A (en) * | 2011-12-16 | 2012-07-04 | 北京工业大学 | Sludge-based activated carbon and preparation method thereof |
| CN102698712A (en) * | 2012-05-14 | 2012-10-03 | 北京工业大学 | Surface modification method of sludge-activated carbon for treating dyeing wastewater |
| CN103130223A (en) * | 2013-03-25 | 2013-06-05 | 东南大学 | Method for preparing activated carbon by using municipal solid waste as raw material |
| CN103435039A (en) * | 2013-08-20 | 2013-12-11 | 西安工程大学 | Method for preparing fallen phoenix tree leaf-doped muddy active carbon by microwave irradiation |
| CN104084142B (en) * | 2014-07-04 | 2015-11-18 | 河海大学 | A kind of preparation method of materialization modification macadamia shell adsorbent |
| CN104084142A (en) * | 2014-07-04 | 2014-10-08 | 河海大学 | Preparation method of physiochemically-modified macadimia nutshell adsorbing agent |
| CN104495841A (en) * | 2014-12-09 | 2015-04-08 | 西南石油大学 | Preparation method of walnut shell-doped sludge activated carbon |
| CN105731752A (en) * | 2016-04-29 | 2016-07-06 | 东北大学 | Method for preparing biochar by carrying out copyrolysis on excess sludge and hazelnut shell |
| CN105731752B (en) * | 2016-04-29 | 2019-04-26 | 东北大学 | A method of charcoal is prepared using excess sludge and hazelnut shell copyrolysis |
| CN107628619A (en) * | 2017-09-15 | 2018-01-26 | 深圳市水务(集团)有限公司 | A kind of preparation method of the rich nitrogen active sludge carbon of adulterated food leftover bits and pieces |
| CN108046254A (en) * | 2017-12-27 | 2018-05-18 | 济南大学 | A kind of corncob derives active carbon electrode material and preparation method thereof |
| CN108046254B (en) * | 2017-12-27 | 2021-03-02 | 济南大学 | Corncob-derived activated carbon electrode material and preparation method thereof |
| CN108033448A (en) * | 2018-01-31 | 2018-05-15 | 西南石油大学 | A kind of coconut husk-sludge composite activated carbon and its preparation method and application |
| CN108423678A (en) * | 2018-04-17 | 2018-08-21 | 华南农业大学 | A kind of multistage porous carbon materials of superhigh specific surface area and the preparation method and application thereof |
| CN109019598A (en) * | 2018-07-18 | 2018-12-18 | 华南农业大学 | A kind of mixing biomass prepares the method and manufactured three-dimensional porous carbon material and its application of the three-dimensional porous carbon material of high specific capacitance |
| CN109174063A (en) * | 2018-10-17 | 2019-01-11 | 肇庆市珈旺环境技术研究院 | A kind of sludge base adsorbent and preparation method thereof |
| CN109317098A (en) * | 2018-10-25 | 2019-02-12 | 肇庆市珈旺环境技术研究院 | A kind of sludge base mixed adsorbing material and preparation method thereof |
| CN110078070A (en) * | 2019-04-11 | 2019-08-02 | 西安石油大学 | A kind of preparation method of the oily sludge base absorption carbon material for oily waste water treatment |
| CN110526549A (en) * | 2019-07-29 | 2019-12-03 | 安徽百和环境技术有限公司 | A kind of betterment of land sludge organism charcoal and preparation method thereof |
| CN110526549B (en) * | 2019-07-29 | 2021-08-24 | 安徽百和环保科技有限公司 | Soil improvement sludge biochar and preparation method thereof |
| CN110342605A (en) * | 2019-07-30 | 2019-10-18 | 苏州飞辉环境科技有限公司 | It is a kind of for adsorbing the sludge-based activated carbon composite material and preparation method of heavy metal in flying ash leachate |
| CN113184844A (en) * | 2021-05-25 | 2021-07-30 | 马鞍山钢铁股份有限公司 | Method for preparing activated carbon by using carbon-containing dust and mud |
| CN114749164A (en) * | 2022-04-20 | 2022-07-15 | 江苏美亚科泽过滤技术有限公司 | Preparation method of sulfur dioxide and hydrogen sulfide gas adsorbent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102107872A (en) | Process for preparing active carbon by adding husks into chemical sludge | |
| CN102120575A (en) | Process for preparing active carbon from chemical sludge | |
| WO2016176906A1 (en) | Method for producing canna indica biochar capable of adsorbing ammonia nitrogen and cadmium simultaneously | |
| Li et al. | A review on the migration and transformation of heavy metals in the process of sludge pyrolysis | |
| CN102249730B (en) | Method for preparing haydite from sludge incineration ash in chemical industry | |
| CN105712733B (en) | Porous biological ceramsite prepared from waste incineration fly ash and biomass pyrolysis gasification residues and preparation method thereof | |
| CN105038822B (en) | The cleaning method and device of a kind of sludge | |
| CN108423959A (en) | A kind of Sludge resource utilization method based on pyrohydrolysis-pyrolysis charring | |
| CN108927109B (en) | Method for modifying biochar by using phosphogypsum and application of biochar | |
| CN110465538B (en) | Pre-dechlorination-sintering treatment process for high-chlorine metallurgical waste and incineration fly ash | |
| CN106810204B (en) | Fenton iron mud cathode and anode integrated ceramsite and method for preparing ceramsite by utilizing Fenton iron mud | |
| CN102285786A (en) | Process for preparing hadite by utilizing chemical residual sludge | |
| Wang et al. | Efficient conversion of sewage sludge into hydrochar by microwave-assisted hydrothermal carbonization | |
| CN102078791A (en) | Sludge activated carbon and preparation method thereof | |
| CN110922108B (en) | Method for solidifying municipal solid waste incineration fly ash based on rice hull ash-red mud composite cementing material | |
| CN110564433A (en) | Super-enriched plant-based biochar and preparation method and application thereof | |
| CN102134072A (en) | Process for preparing activated carbon by utilizing residual sludge from sewage treatment in pesticide chemistry industry | |
| CN104998618A (en) | Method for preparing hydrothermal biomass charcoal from pecan shells | |
| CN105536698A (en) | Preparation method of papermaking sludge activated biochar | |
| CN101700524B (en) | Fixing agent and method for safely disposing heavy metal polluted soil repairing plant | |
| CN110302756B (en) | Method for removing heavy metal ions by using industrial waste residue modified biochar | |
| CN103739179A (en) | Sludge pre-treatment method | |
| CN111085196B (en) | Method for preparing composite photocatalyst containing metal elementary substance particles from carbon-containing solid waste | |
| CN108218160A (en) | A kind of sludge fast and harmless treatment process of high pressure hydro-thermal and recirculating fluidized bed pyrolysis auxiliary | |
| CN204918477U (en) | Clean processing apparatus of mud |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110629 |