CN1973995A - Prepn of wet sludge carbonizing adsorbent - Google Patents
Prepn of wet sludge carbonizing adsorbent Download PDFInfo
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- CN1973995A CN1973995A CN 200610117891 CN200610117891A CN1973995A CN 1973995 A CN1973995 A CN 1973995A CN 200610117891 CN200610117891 CN 200610117891 CN 200610117891 A CN200610117891 A CN 200610117891A CN 1973995 A CN1973995 A CN 1973995A
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Abstract
The present invention relates to the preparation process of wet sludge carbonizing adsorbent. The wet sludge carbonizing adsorbent is prepared with sludge from city sewage treating yard as main material, and through adding activator, such as zinc chloride solution, etc. commonly used in preparing active carbon to activate sludge, drying the activated sludge, pyrolytically carbonizing in a high temperature carbonizing furnace with water steam as protecting gas, cooling, washing, and stoving. Preparing adsorbent with sludge can reduce secondary pollution, lower adsorbent preparing cost and result in obvious environment benefit and economic benefit.
Description
Technical field
The present invention relates to a kind of preparation method of wet sludge carbonizing adsorbent, be one and utilize the city excess sludge to prepare carbonizing adsorbent, and then realize the method that recycling sludge utilizes.Belong to field of environment engineering technology.
Background technology
The processing of sludge from wastewater treatment plant is disposed, and is a hot subject of environmental project circle.With mud is the preparation that raw material carries out carbonated material, is a kind of method that recycling sludge utilizes.Mud prepares the research of carbonated material, the method that adopts is at present, earlier mud is carried out drying and other treatment, and then be raw material with the dewatered sludge, activate with charing and handle, the shortcoming of this method is that the sludge drying processing cost is higher, thereby makes that this technology is difficult to be promoted application in actual production.(Fu-Shen Zhang, Jerome O.Nriagu, HideakiItoh.Mercury removal from water using activated carbons derived from organicsewage sludge, Water research, 2005,39:389-395; Three plumages are grand bright, effective utilization regeneration and utilization, 2001,24 (90): 6-13.) of the exploitation of Japan Sewage Works Agency's charing treatment system and charing mud.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of preparation method of wet sludge carbonizing adsorbent is provided, with easy and cheaply mode mud carried out charing handle, the carbonated material that obtains can substitute active carbon and use, and realizes the recycling sludge utilization.
For realizing this purpose; in the technical solution used in the present invention; excess sludge with the municipal sewage plant is a raw material; adding is activator commonly used in the feedstock production active carbon with timber, activates as liquor zinci chloridi etc., after the activated sludge drying is handled; place the high temperature carbonization stove; do protection gas with steam and carry out pyrolysis charring, after cooling, washing, oven dry prepare carbonizing adsorbent.
The preparation method of wet sludge carbonizing adsorbent of the present invention comprises following concrete steps:
1, with the excess sludge of municipal sewage plant dehydration, make its moisture content be reduced to 70-90%, promptly the mud solid content is 10～30%.
2, adopt timber to prepare activator commonly used in the active carbon process (as 20-60% concentration liquor zinci chloridi etc.) wet mud is carried out activation processing, the volume ratio of wet mud and activator solution is 1: 0.5～3, and soak time is 4～24 hours.
3, the mud after the activation is carried out drying and other treatment, make its moisture content reduce to 10～15%.
4, the mud after the mummification is placed the high temperature carbonization stove, be warming up to 450～700 ℃ with the heating rate of 5～40 ℃ of per minutes, feed steam simultaneously and do protection gas, carry out sludge carbonization, the pyrolysis charring time is 30～60 minutes.
5, after the carbonated material cooling, adopt the method in the timber making active carbon, carbonated material is carried out the hydrochloric acid solution washing and is washed with distilled water to neutrality, dry processing then, can obtain carbonizing adsorbent.
The carbonizing adsorbent material that obtains, (GB/T12496.8-1999) measure the active carbon iodine number according to People's Republic of China's standard " wood activated charcoal test method " and determine its absorption property, the result shows that every physicochemical property of carbonated material all can reach the Application of Brand Active Carbon standard.
Main points of the present invention are, with the mud of municipal wastewater treatment plant after processed (moisture percentage in sewage sludge can up to 78-90%) is raw material, add timber and prepare activating agent activation commonly used in the active carbon, after the activated sludge drying was handled, pyrolysis charring prepared carbonated material at a certain temperature.This method has avoided present mud to prepare the problem that mud raw material in the carbonated material process also needs drying and other treatment, has reduced preparation cost to a great extent, and the industrial applications for preparing carbonated material for mud provides favourable reference.
Good effect of the present invention is: 1, excess sludge is the environmental contaminants that need infusion of financial resources to handle originally, but because the composition major part of excess sludge is a microbial body, and contain a large amount of polluters, after mud is handled through charing, can form the very big carbonated material of porosity and specific area, make well behaved carbonizing adsorbent, can substitute active carbon and use; 2, adopt steam to be protection gas, in application, both served as the function of protection gas, also played physically activated effect to a certain extent; 3, reduced the discharge capacity of city excess sludge, avoided the generation of secondary pollution, embodied the circular economy concept of Solid Waste Treatment, significant environmental benefit and social benefit have been arranged.
The specific embodiment
Below by concrete example technical scheme of the present invention is described further.Following examples do not constitute qualification to the present invention.
Embodiment 1
Get the excess sludge of Shanghai Sewage Plant, making its solid content after processed is 10% (moisture content is 90%), added concentration in 1: 0.5 by volume and be 40% liquor zinci chloridi, activate 4 hours, then compound is dried under 105 ℃ to moisture content be 10%.Accurately take by weighing quantity of sample; add in the high temperature carbonization stove; do at steam under the condition of protection gas; heating rate pyrolysis charring 30min under 700 ℃ of temperature with 40 ℃ of per minutes; be cooled to room temperature, the thick product concentration that makes is that 3% hydrochloric acid solution washes repeatedly, to remove zinc chloride and other inorganic matters; and transfer to neutrality with distilled water, it is standby to be dried to constant weight then under 105 ℃.The carbonated material iodine number that makes is 650mgg
-1Specific area is 547.7m
2G
-1Micropore volume is 0.22cm
3G
-1Other every indexs all can reach the activated carbon application standard.
Embodiment 2
Get Shanghai sewage plant excess sludge (solid content is about 20%), added concentration in 1: 3 by volume and be 55% liquor zinci chloridi, on magnetic stirring apparatus, fully stir evenly, activate 24 hours, then compound is dried by the fire under 105 ℃ to moisture content be 15%.Accurately taking by weighing 20g adds in the high temperature carbonization stove; feed steam and do protection gas; heating rate with 10 ℃ of per minutes carries out pyrolysis charring 30min under 600 ℃ of conditions; be cooled to room temperature then; the thick product that makes washes to remove zinc chloride and other inorganic matters with 3% hydrochloric acid solution; be washed with distilled water to again and be neutral, then 105 ℃ to be dried to constant weight standby.Measure according to GB7702.7-1997, the active carbon carbonated material iodine number of preparing is 720mgg
-1Specific area is 487.7m
2G
-1, micropore volume is 0.18cm
3G
-1Other every indexs all can reach the activated carbon application standard.
Embodiment 3
Get the excess sludge of Shanghai Sewage Plant, making its solid content after processed is 16%, adds concentration in 1: 2 by volume and be 50% liquor zinci chloridi, activates 4 hours, is 15% with compound at 105 ℃ of following mummification to moisture content then.Accurately take by weighing quantity of sample; add in the high temperature carbonization stove; do at steam under the condition of protection gas; heating rate with 20 ℃ of per minutes carries out pyrolysis charring 60min under 450 ℃ of temperature; be cooled to room temperature then, the thick product concentration that makes is that 3% hydrochloric acid solution washes repeatedly, to remove zinc chloride and other inorganic matters; and transfer to neutrality with distilled water, it is standby to be dried to constant weight then under 105 ℃.The carbonated material iodine number that makes is 580mgg
-1Specific area is 426.1m
2G
-1Micropore volume is 0.11cm
3G
-1The carbonated material productive rate is 38%.Every physicochemical property of carbonated material all can reach the Application of Brand Active Carbon standard.
Claims (2)
1, a kind of preparation method of wet sludge carbonizing adsorbent is characterized in that comprising the steps:
1) with the excess sludge of municipal sewage plant dehydration, make its moisture content be reduced to 70-90%, promptly the mud solid content is 10～30%;
2) adopting with timber is that the activator solution that adopts in the feedstock production active carbon process carries out activation processing to wet mud, and the volume ratio of wet mud and activator solution is 1: 0.5～3, and soak time is 4～24 hours;
3) mud after the activation is carried out drying and other treatment, make moisture percentage in sewage sludge reduce to 10～15%;
4) mud after the mummification is placed the high temperature carbonization stove, be warming up to 450～700 ℃ with the heating rate of 5～40 ℃ of per minutes, feed steam simultaneously and do protection gas, carry out sludge carbonization, the pyrolysis charring time is 30～60 minutes;
5) after the carbonated material cooling, adopt the hydrochloric acid solution washing and be washed with distilled water to neutrality, dry processing then, promptly obtain carbonizing adsorbent.
2, according to the preparation method of the wet sludge carbonizing adsorbent of claim 1, it is characterized in that described activator solution is the liquor zinci chloridi of 20-60% concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101178914A CN100418621C (en) | 2006-11-02 | 2006-11-02 | Prepn of wet sludge carbonizing adsorbent |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101178914A CN100418621C (en) | 2006-11-02 | 2006-11-02 | Prepn of wet sludge carbonizing adsorbent |
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| CN1973995A true CN1973995A (en) | 2007-06-06 |
| CN100418621C CN100418621C (en) | 2008-09-17 |
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| CNB2006101178914A Expired - Fee Related CN100418621C (en) | 2006-11-02 | 2006-11-02 | Prepn of wet sludge carbonizing adsorbent |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101716491B (en) * | 2009-12-14 | 2012-02-15 | 昆明理工大学 | Method for preparing heavy metal adsorbent by carbonizing lakebed sludge |
| CN102531010A (en) * | 2011-10-24 | 2012-07-04 | 黑龙江大学 | Method for preparing porous amorphous aluminum hydroxide by taking carbonized sludge as aluminum source |
| CN102658084A (en) * | 2012-05-18 | 2012-09-12 | 东南大学 | Preparation method of nickel nitrate modified sludge activated carbon |
| CN102745879A (en) * | 2012-07-05 | 2012-10-24 | 华中科技大学 | Sludge-based adsorbent used for desulfurization and demercuration of flue-gas and preparation method thereof |
| CN104874352A (en) * | 2015-05-19 | 2015-09-02 | 浙江工业大学 | Preparation method of energy-saving sludge-based adsorbent |
| CN104984732A (en) * | 2015-07-27 | 2015-10-21 | 刘雷 | Heavy metal ion adsorbent preparation method |
| CN106185934A (en) * | 2016-07-29 | 2016-12-07 | 句容市百诚活性炭有限公司 | A kind of method preparing activated carbon with dirty mud as a raw material |
| CN107934957A (en) * | 2017-10-17 | 2018-04-20 | 上海市政工程设计研究总院（集团）有限公司 | One kind shaping active sludge carbon preparation method |
| TWI643815B (en) * | 2017-09-13 | 2018-12-11 | 國立宜蘭大學 | Method for preparing high specific surface area sewage sludge carbon material, active carbon material and the use thereof |
| CN109336640A (en) * | 2018-12-10 | 2019-02-15 | 青岛海通鑫瑞实业有限公司 | A kind of preparation method of carbon based material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107758658A (en) * | 2017-10-11 | 2018-03-06 | 上海市政工程设计研究总院（集团）有限公司 | One kind shaping active sludge carbon preparation method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6030922A (en) * | 1998-07-10 | 2000-02-29 | Illinois Institute Of Technology | Synthesizing carbon from sludge |
| KR20010026480A (en) * | 1999-09-07 | 2001-04-06 | 이승목 | A Preparation of Adsorbent from Fisheries Wastes and Phosphorus Adsorption |
| CN1644495A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for preparing active carbon from urban sewage treatment plant mud |
| CN1803678A (en) * | 2005-12-29 | 2006-07-19 | 哈尔滨工业大学 | Activating harmless recycling method for nitrobenzene-containing sludge |
-
2006
- 2006-11-02 CN CNB2006101178914A patent/CN100418621C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101716491B (en) * | 2009-12-14 | 2012-02-15 | 昆明理工大学 | Method for preparing heavy metal adsorbent by carbonizing lakebed sludge |
| CN102531010A (en) * | 2011-10-24 | 2012-07-04 | 黑龙江大学 | Method for preparing porous amorphous aluminum hydroxide by taking carbonized sludge as aluminum source |
| CN102658084A (en) * | 2012-05-18 | 2012-09-12 | 东南大学 | Preparation method of nickel nitrate modified sludge activated carbon |
| CN102658084B (en) * | 2012-05-18 | 2013-12-11 | 东南大学 | Preparation method of nickel nitrate modified sludge activated carbon |
| CN102745879A (en) * | 2012-07-05 | 2012-10-24 | 华中科技大学 | Sludge-based adsorbent used for desulfurization and demercuration of flue-gas and preparation method thereof |
| CN102745879B (en) * | 2012-07-05 | 2013-10-30 | 华中科技大学 | Sludge-based adsorbent used for desulfurization and demercuration of flue-gas and preparation method thereof |
| CN104874352A (en) * | 2015-05-19 | 2015-09-02 | 浙江工业大学 | Preparation method of energy-saving sludge-based adsorbent |
| CN104984732A (en) * | 2015-07-27 | 2015-10-21 | 刘雷 | Heavy metal ion adsorbent preparation method |
| CN106185934A (en) * | 2016-07-29 | 2016-12-07 | 句容市百诚活性炭有限公司 | A kind of method preparing activated carbon with dirty mud as a raw material |
| TWI643815B (en) * | 2017-09-13 | 2018-12-11 | 國立宜蘭大學 | Method for preparing high specific surface area sewage sludge carbon material, active carbon material and the use thereof |
| CN107934957A (en) * | 2017-10-17 | 2018-04-20 | 上海市政工程设计研究总院（集团）有限公司 | One kind shaping active sludge carbon preparation method |
| CN109336640A (en) * | 2018-12-10 | 2019-02-15 | 青岛海通鑫瑞实业有限公司 | A kind of preparation method of carbon based material |
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| CN100418621C (en) | 2008-09-17 |
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Owner name: NINGBO JIEYUAN ENVIRONMENTAL PROTECTION TECHNOLOGY Free format text: FORMER OWNER: SHANGHAI JIAO TONG UNIVERSITY Effective date: 20140430 |
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Effective date of registration: 20140430 Address after: 1560, room 1558, 315040 Jiangnan Road, Ningbo hi tech Zone, Zhejiang Patentee after: Ningbo clean source environmental protection science and Technology Development Co., Ltd. Address before: 200240 Dongchuan Road, Shanghai, No. 800, No. Patentee before: Shanghai Jiao Tong University |
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Owner name: SHANGHAI YINLONG WATER SUPPLY EQUIPMENT CO., LTD. Free format text: FORMER OWNER: NINGBO JIEYUAN ENVIRONMENTAL PROTECTION TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20150604 |
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