CN100443428C - Sludge deep dehydration method - Google Patents
Sludge deep dehydration method Download PDFInfo
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- CN100443428C CN100443428C CNB2006101235527A CN200610123552A CN100443428C CN 100443428 C CN100443428 C CN 100443428C CN B2006101235527 A CNB2006101235527 A CN B2006101235527A CN 200610123552 A CN200610123552 A CN 200610123552A CN 100443428 C CN100443428 C CN 100443428C
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Abstract
The invention discloses a deep dehydrating method of sludge, which comprises the following steps: a. tempering; adding filtrate in the sludge; adding chemical raw material with Fe3+ to stir; reacting for 2-12min; adding chemical raw material with Ca2+ to stir; reacting for 3-15min; b. dehydrating; introducing tempered sludge into filter press; filtering the water in the sludge; maintaining pressure at 1.5Mpa-2.5Mpa for 30-70min.
Description
Technical field
The invention belongs to field of sludge treatment, specifically relate to a kind of method of deeply dehydrating sludge.
Background technology
Ignore easily and be that very crucial processing unit is a sludge treatment for one in the sewage disposal, the key of sludge treatment is a mud glue, moisture existence form in the mud has four kinds: 1, interstitial water or free-water, be present between mud granule, and account for 65～85% of sludge water content; 2, capillary water is present in the kapillary between mud granule, accounts for 15～20% of sludge water content; 3, planar water is adsorbed on a part of water on the mud granule; 4, cellular water is present in mud granule inside.Wherein interstitial water and planar water account for 70～80% of total water content in the mud, and planar water and cellular water account for about 10% of total water content in the mud, and the moisture that therefore removes this part seems especially crucial!
Interstitial water is easy to remove in theory, but because mud is to be formed by cotton-shaped colloidal solid set, particle is very thin and very soft.If adopt the mechanical filter method to sludge dewatering, when applying external force, gelationus subparticle will be blocked established filter bridge, has increased specific drainage pressure; And because soft particle has certain compressibility, when external force increased, particle can form one deck hole very little " curtain " on the filtration medium surface, thereby water can't be passed through, and dehydration just seems difficult unusually, causes effect undesirable.Therefore existing mechanical processing method at mud, the current sewage disposal of incompatibility.
Summary of the invention
The present invention solves the technical problem of above existence, provides a kind of dehydrating effect good, and technology is simple, makes the method for the water ratio of mud at the deeply dehydrating sludge below 60%.
The present invention is achieved in that a kind of method of deeply dehydrating sludge, and its step is as follows:
A, modified, after the adding filtrate, interpolation contains Fe in mud
3+Industrial chemicals stirs, and behind question response 2～12min, interpolation contains Ca again
2+Industrial chemicals stirs, question response 3～15min;
B, dehydration are introduced pressure filter to modified good mud the moisture filter in the mud are fallen, and under the pressure of 1.5MPa～2.5MPa pressurize 30～70min.
The Fe that the inventive method is used
3+The addition of industrial chemicals is 0.3～2%.
The Ca that the inventive method is used
2+The addition of industrial chemicals is 0.5～5%.
The mud colloidal solid has adsorbed many moisture and has become planar water owing to capillary effect, colloidal solid has bilayer structure and the surperficial electric charge that all has same nature, and generally electronegative, they repel mutually, hinder agglomeration of particles, grow up, make particle keep steady state.Method of the present invention, finish dewatering process by modified and two steps of dehydration, the method of utilizing chemistry to combine with machinery, after making the electric charge of colloidal solid obtain neutralization, particle is unsteady state, adheres to each other between the particle, settles down at last, fall by the moisture filter of pressure filter, reach the purpose of dehydration mud.
Embodiment
The method of deeply dehydrating sludge of the present invention, its step is as follows:
A, modified, after the adding filtrate, interpolation contains Fe in mud
3+Industrial chemicals stirs, and behind question response 2～12min, interpolation contains Ca again
2+Industrial chemicals stirs, question response 3～15min;
B, dehydration are introduced pressure filter to modified good mud the moisture filter in the mud are fallen, and under the pressure of 1.5MPa～2.5MPa pressurize 30～70min, make that dehydration is more thorough.
The Fe that the inventive method is used
3+The addition of industrial chemicals is 0.3～2%, used Ca
2+The addition of industrial chemicals is 0.5～5%, can reach best effect.
Below in conjunction with embodiment, the present invention is described in detail.
Embodiment 1
1, get moisture 80.6% municipal sludge, adding filtrate, to transfer to moisture be about 90%;
2, add the 1# additive, promptly contain Fe
3+Industrial chemicals, addition are 0.5%, fully stirring reaction 8min;
3, add the 2# additive then, promptly contain Ca
2+Industrial chemicals, addition are 1.5%, fully stirring reaction 5min;
4, inject plate-and-frame filter press by the anti-mud that mixes up of ram pump, advancing mud pressure is 0.3MPa, when reaching the mud amount, behind pressurize 40min under the pressure about 1.8MPa, so that the moisture in the mud is taken off;
5, after pressurize is finished, the release blowing.
Experimental data proves that after the dehydration, the water ratio of mud reaches 57.3%, meets processing requirements.
Embodiment 2
1, get moisture 78.4% municipal sludge, adding filtrate, to transfer to moisture be about 90%;
2, add the 1# additive, promptly contain Fe
3+Industrial chemicals, addition are 1%, fully stirring reaction 10min;
3, add the 2# additive then, promptly contain Ca
2+Industrial chemicals, addition are 2%, fully stirring reaction 5min;
4, inject plate-and-frame filter press by the anti-mud that mixes up of ram pump, advancing mud pressure is 0.3MPa, when reaching the mud amount, behind pressurize 50min under the pressure about 2.0MPa, so that the moisture in the mud is taken off;
5, after pressurize is finished, the release blowing.
Experimental data proves that after the dehydration, the water ratio of mud reaches 55.8%, meets processing requirements.
Embodiment 3
1, get moisture 80.2% municipal sludge, adding filtrate, to transfer to moisture be about 90%;
2, add the 1# additive, promptly contain Fe
3+Industrial chemicals, addition are 0.3%, fully stirring reaction 5min;
3, add the 2# additive then, promptly contain Ca
2+Industrial chemicals, addition are 2.5%, fully stirring reaction 5min;
4, inject plate-and-frame filter press by the anti-mud that mixes up of ram pump, advancing mud pressure is 0.3MPa, when reaching the mud amount, behind pressurize 50min under the pressure about 2.0MPa, so that the moisture in the mud is taken off;
5, after pressurize is finished, the release blowing.
Experimental data proves that after the dehydration, the water ratio of mud reaches 58.7%, meets processing requirements.
Embodiment 4
1, get moisture 79.5% municipal sludge, adding filtrate, to transfer to moisture be about 90%;
2, add the 1# additive, promptly contain Fe
3+Industrial chemicals, addition are 0.7%, fully stirring reaction 8min;
3, add the 2# additive then, promptly contain Ca
2+Industrial chemicals, addition are 3%, fully stirring reaction 10min;
4, inject plate-and-frame filter press by the anti-mud that mixes up of ram pump, advancing mud pressure is 0.3MPa, when reaching the mud amount, behind pressurize 50min under the pressure about 2.5MPa, so that the moisture in the mud is taken off;
5, after pressurize is finished, the release blowing.
Experimental data proves that after the dehydration, the water ratio of mud reaches 53.3%, meets processing requirements.
Embodiment 5
1, get moisture 81.6% municipal sludge, adding filtrate, to transfer to moisture be about 90%;
2, add the 1# additive, promptly contain Fe
3+Industrial chemicals, addition are 1%, fully stirring reaction 5min;
3, add the 2# additive then, promptly contain Ca
2+Industrial chemicals, addition are 0.5%, fully stirring reaction 10min;
4, inject plate-and-frame filter press by the anti-mud that mixes up of ram pump, advancing mud pressure is 0.3MPa, when reaching the mud amount, behind pressurize 50min under the pressure about 1.5MPa, so that the moisture in the mud is taken off;
5, after pressurize is finished, the release blowing.
Experimental data proves that after the dehydration, the water ratio of mud reaches 59.1%, meets processing requirements.
Embodiment 6
1, get moisture 80.9% municipal sludge, adding filtrate, to transfer to moisture be about 90%;
2, add the 1# additive, promptly contain Fe
3+Industrial chemicals, addition are 0.8%, fully stirring reaction 5min;
3, add the 2# additive then, promptly contain Ca
2+Industrial chemicals, addition are 2.5%, fully stirring reaction 10min:
4, inject plate-and-frame filter press by the anti-mud that mixes up of ram pump, advancing mud pressure is 0.3MPa, when reaching the mud amount, behind pressurize 40min under the pressure about 1.8MPa, so that the moisture in the mud is taken off;
5, after pressurize is finished, the release blowing.
Experimental data proves that after the dehydration, the water ratio of mud reaches 55.6%, meets processing requirements.
Claims (3)
1. the method for a deeply dehydrating sludge is characterized in that, the step of this method is as follows:
A, modified, after the adding filtrate, interpolation contains Fe in mud
3+Industrial chemicals stirs, and behind question response 2～12min, interpolation contains Ca again
2+Industrial chemicals stirs, question response 3～15min;
B, dehydration are introduced pressure filter to modified good mud the moisture filter in the mud are fallen, and under the pressure of 1.5MPa～2.5MPa pressurize 30～70min.
2. the method for deeply dehydrating sludge according to claim 1 is characterized in that, described Fe
3+The addition of industrial chemicals is 0.3～2%.
3. the method for deeply dehydrating sludge according to claim 1 is characterized in that, described Ca
2+The addition of industrial chemicals is 0.5～5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101235527A CN100443428C (en) | 2006-11-15 | 2006-11-15 | Sludge deep dehydration method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101235527A CN100443428C (en) | 2006-11-15 | 2006-11-15 | Sludge deep dehydration method |
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| CN1962496A CN1962496A (en) | 2007-05-16 |
| CN100443428C true CN100443428C (en) | 2008-12-17 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234841B (en) * | 2008-01-02 | 2011-03-23 | 广州普得环保设备有限公司 | Sludge concentration dehydration method |
| CN101696077B (en) * | 2009-10-21 | 2011-06-08 | 黑旋风工程机械开发有限公司 | Method for screening and dewatering urban sludge efficiently |
| CN102249514A (en) * | 2010-05-17 | 2011-11-23 | 唐菊香 | Low-energy drying treatment method for discharged sludge |
| CN101948232A (en) * | 2010-09-30 | 2011-01-19 | 黄杨 | Sludge treatment method |
| CN102060429B (en) * | 2011-02-16 | 2012-06-27 | 河南华天环保科技有限公司 | Conditioner for sludge dewatering and dewatering method of sludge |
| CN102795755A (en) * | 2011-05-27 | 2012-11-28 | 广州绿由工业弃置废物回收处理有限公司 | Sludge deep dehydrating system and sludge deep dehydrating method |
| CN102491618A (en) * | 2011-11-29 | 2012-06-13 | 曾秀仪 | Depth dehydration method for residual sludge |
| CN102531329A (en) * | 2012-01-09 | 2012-07-04 | 苏州格瑞特环保科技产业发展有限公司 | Organic composite flocculant for conditioning and dehydration of sludge |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107444A (en) * | 1994-02-23 | 1995-08-30 | 机械电子工业部机械工业环境保护技术研究所 | Auto-controlling system for dewatering sludge |
| JP2000301200A (en) * | 1999-04-19 | 2000-10-31 | Monotekku Kk | Sludge dehydrating treatment method and apparatus |
| CN1621371A (en) * | 2003-11-24 | 2005-06-01 | 曾智勇 | Highly effective amendment for sludge dehydration |
-
2006
- 2006-11-15 CN CNB2006101235527A patent/CN100443428C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107444A (en) * | 1994-02-23 | 1995-08-30 | 机械电子工业部机械工业环境保护技术研究所 | Auto-controlling system for dewatering sludge |
| JP2000301200A (en) * | 1999-04-19 | 2000-10-31 | Monotekku Kk | Sludge dehydrating treatment method and apparatus |
| CN1621371A (en) * | 2003-11-24 | 2005-06-01 | 曾智勇 | Highly effective amendment for sludge dehydration |
Non-Patent Citations (8)
| Title |
|---|
| 剩余污泥的凝聚压滤脱水. 曹殿林,汪国柱.CNKI中国期刊全文数据库. 1981 |
| 剩余污泥的凝聚压滤脱水. 曹殿林,汪国柱. CNKI中国期刊全文数据库. 1981 * |
| 城市污水处理厂污泥物化法减量试验研究. 王铮.CNKI中国优秀博硕士学位论文全文数据库. 2004 |
| 城市污水处理厂污泥物化法减量试验研究. 王铮. CNKI中国优秀博硕士学位论文全文数据库. 2004 * |
| 污泥调理剂. 刘自莲，施永生，李鹏.云南化工，第32卷第5期. 2005 |
| 污泥调理剂. 刘自莲，施永生，李鹏. 云南化工，第32卷第5期. 2005 * |
| 给水厂的污水及污泥处理设计研究. 王南威.CNKI中国优秀博硕士学位论文全文数据库. 2004 |
| 给水厂的污水及污泥处理设计研究. 王南威. CNKI中国优秀博硕士学位论文全文数据库. 2004 * |
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Denomination of invention: Sludge deep dehydration method Effective date of registration: 20121112 Granted publication date: 20081217 Pledgee: Societe Generale Bank, Limited by Share Ltd, Guangzhou branch Pledgor: Guangzhou Pude Environmental Protection Facility Co., Ltd. Registration number: 2012440000001 |
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Owner name: GUANGZHOU XINZHICHENG ENVIRONMENTAL PROTECTION TEC Free format text: FORMER OWNER: GUANGZHOU PUDE ENVIRONMENTAL PROTECTION FACILITY CO., LTD. Effective date: 20130619 |
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Effective date of registration: 20130619 Address after: 510600 Guangzhou, Yuexiu District, Temple Road, the right of the new layer on the ground floor, No. third, No. 90, No. 168 Patentee after: Guangzhou Xinzhicheng Environmental Protection Technology Machinery Equipment Co., Ltd. Address before: 511450 Guangdong province Panyu District Shiji Town Lang Wei Industrial Zone No. 21 Patentee before: Guangzhou Pude Environmental Protection Facility Co., Ltd. |
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Application publication date: 20070516 Assignee: Guangzhou utlity Environmental Technology Co. Ltd. Assignor: Guangzhou Xinzhicheng Environmental Protection Technology Machinery Equipment Co., Ltd. Contract record no.: 2015440000140 Denomination of invention: Sludge deep dehydration method Granted publication date: 20081217 License type: Common License Record date: 20150518 |
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Effective date of registration: 20170123 Address after: 510000 Guangdong city of Guangzhou province Yuexiu District Shuiyin Road No. 119 room 2201 star Ying Jing Patentee after: Guangzhou utlity Environmental Technology Co. Ltd. Address before: Shop third, level 168, new street, temple, Guangzhou, Yuexiu District, No. 90 Patentee before: Guangzhou Xinzhicheng Environmental Protection Technology Machinery Equipment Co., Ltd. |
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Denomination of invention: Method for deep dewatering of sludge Effective date of registration: 20220509 Granted publication date: 20081217 Pledgee: China Minsheng Banking Corp Guangzhou branch Pledgor: UTALY ENVIRONMENTAL TECHNOLOGIES CO.,LTD. Registration number: Y2022980005254 |
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