CN104591522A - Sludge flocculation-concentration treatment technique - Google Patents
Sludge flocculation-concentration treatment technique Download PDFInfo
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- CN104591522A CN104591522A CN201510070875.3A CN201510070875A CN104591522A CN 104591522 A CN104591522 A CN 104591522A CN 201510070875 A CN201510070875 A CN 201510070875A CN 104591522 A CN104591522 A CN 104591522A
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- sludge
- mud
- sludge flocculation
- floc sedimentation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a sludge flocculation-concentration treatment technique which comprises the following steps: formation of tiny floccules; adding a cationic flocculant into sludge to be treated, and stirring to neutralize electric charges in the sludge, thereby forming the tiny floccules; and granulation and precipitation: adding an anionic flocculant into the sludge with tiny floccules so that the floccules grow bigger, thereby forming the precipitate. The treatment technique has the characteristics of high efficiency, high adaptability, no secondary pollution or hazard and the like.
Description
Technical field
The present invention relates to the treatment process that a kind of sludge flocculation is concentrated, be applicable to the process such as mud dosing flocculation, precipitation concentration such as municipal sludge, printing and dyeing sludge, vinasse, paper pulp.
Background technology
Along with industrial expansions such as city-building and printing and dyeing, wine brewing and papermaking, urban life mud, printing and dyeing sludge, vinasse, paper pulp blowdown flow rate increase gradually, have a strong impact on environment.Along with improving constantly of national requirements for environmental protection, government and environmental administration require the total release of cutting down pollutent further, improve environmental quality.Therefore, sludge treatment technique becomes one of emphasis of people's research present stage.
Existing sludge flocculation concentration technique mainly contains following three kinds: the first, polymerize aluminum chloride and polyacrylamide sludge flocculation technique, because having aluminum ion in polymerize aluminum chloride in this first flocculation process, can cause secondary pollution and harm; The second, calcium oxide and polyacrylamide sludge flocculation technique, this second flocculation process can not cause secondary pollution and harm, but due to the addition of calcium oxide comparatively large, mud increment can be caused, disagree with national minimizing policy; The third, iron trichloride and polyacrylamide sludge flocculation technique, chlorion can be brought among mud by this third treatment process, for follow-up process can impact, as: during burning, chlorion can cause damage to boiler, and the membership that adds of iron ion makes filtrate colourity increase, when processing filtrate, the cost of colourity process can be increased.Therefore, the defect that all exists of existing above-mentioned main flow sludge flocculation depositing technology self and deficiency.
Summary of the invention
In view of this, necessaryly provide that a kind of efficiency is high, strong adaptability, there is no the sludge flocculation concentration technique of secondary pollution and harm, to overcome above-mentioned defect and deficiency.
The invention provides a kind of sludge flocculation concentration technique, it comprises the following steps:
Form small floc sedimentation: in pending mud, add cationic flocculant and stir, to neutralize the electric charge in this mud, form small floc sedimentation;
Granulation precipitates: in the mud being formed with small floc sedimentation, add anionic flocculant, described floc sedimentation is grown up, and forms precipitation.
Based on above-mentioned treatment process, described cationic flocculant is positively charged organic polymer coargulator, and molecular weight is 8,000,000-1,000 ten thousand, ion density 20%-50%, wherein, described organic polymer coargulator is polyacrylamide, poly-aluminium, Polyferric Sulfate, poly-activated silica gel and modifier thereof, polyaluminum sulfate ferric-aluminum chloride or polymerization Polyferric Sulfate silicon flocculation agent.
Based on above-mentioned treatment process, described mud is municipal sludge, printing and dyeing sludge, vinasse or paper pulp.
Based on above-mentioned treatment process, the stirring velocity in the step of the small floc sedimentation of described formation is 30-50 rev/min
Based on above-mentioned treatment process, the particle diameter of described small floc sedimentation is approximately 0.1mm-1mm.
Based on above-mentioned treatment process, it is the mud of 1 ‰-3 ‰ quality that described cationic flocculant controls add-on by PLC, and to add concentration be 0.5 ‰-1.5 ‰.
Based on above-mentioned treatment process, described anionic flocculant is the organic floculant with negative charge, and molecular size range is 1,000 ten thousand-1,800 ten thousand, and ion density is 10%-35%.
Based on above-mentioned treatment process, granulation precipitation process in, described floc sedimentation grow up formed precipitation time be 15-60 second.
Based on above-mentioned treatment process, it is the mud of 1 ‰-2 ‰ quality that described anionic flocculant controls add-on by PLC, and to add concentration be 0.5 ‰-1.5 ‰.
Based on above-mentioned treatment process, comprise the step of filtering described precipitation further.
Based on above-mentioned treatment process, described cationic flocculant is molecular weight is 8,000,000-1,000 ten thousand, and the cationic-type polyacrylamide of ion density 20%-50%; Described anionic flocculant is molecular weight is 1,000 ten thousand-1,800 ten thousand, and ion density is 10%-35% anion-polyacrylamide.
Relative to prior art, sludge flocculation concentration technique provided by the invention by first add in mud described cationic flocculant fully in and electric charge in mud, form described small floc sedimentation, add described anionic flocculant again and make described small floc sedimentation fast growth, form precipitation, just can remove precipitation by the method for filtering, reach the object of sludge flocculation granulation, thus make this treatment process efficiency improve 10%-20%, strong adaptability, there is no secondary pollution and harm.
Embodiment
Be below specific embodiments of the invention, technical scheme of the present invention is further described, but the present invention is not limited to these embodiments.
The invention provides a kind of sludge flocculation concentration technique, it comprises the following steps:
Form small floc sedimentation: in pending mud, add cationic flocculant and stir, to neutralize the electric charge in this mud, form small floc sedimentation;
Granulation precipitates: in the mud being formed with small floc sedimentation, add anionic flocculant, described floc sedimentation is grown up, and forms precipitation.
Described mud is municipal sludge, printing and dyeing sludge, vinasse or paper pulp.
Described cationic flocculant is positively charged organic polymer coargulator, and molecular weight is 8,000,000-1,000 ten thousand, ion density 20%-50%, wherein, described organic polymer coargulator can be cationic-type polyacrylamide, poly-aluminium, Polyferric Sulfate, poly-activated silica gel and modifier thereof, polyaluminum sulfate ferric-aluminum chloride or polymerization Polyferric Sulfate silicon flocculation agent.Preferably, described cationic flocculant is molecular weight is 8,000,000-1,000 ten thousand, and the cationic-type polyacrylamide of ion density 20%-50%.
Described cationic flocculant is mainly used in electrical counteract, forms small floc sedimentation.The chemical feeding quantity of this cationic flocculant is primarily of the electrical decision in described mud.This cationic flocculant can control chemical feeding quantity, dosing speed etc. by PLC, and the add-on of described cationic flocculant is the mud of 1 ‰-3 ‰ quality, and to add concentration be 0.5 ‰-1.5 ‰.Stirring velocity in the step of the small floc sedimentation of described formation is 30-50 rev/min, and the particle diameter of described small floc sedimentation is approximately 0.1mm-1mm.
Described anionic flocculant is the organic floculant with negative charge, and molecular size range is 1,000 ten thousand-1,800 ten thousand, and ion density is 10%-35%.Particularly, described anionic flocculant can be Basic Lignin Anionic High-molecular Flocculant or anion-polyacrylamide.Described anionic flocculant is mainly used in impelling described small floc sedimentation fast growth, forms precipitation.Preferably, described anionic flocculant is molecular weight is 1,000 ten thousand-1,800 ten thousand, and ion density is 10%-35% anion-polyacrylamide.The factors such as the performance of the usage quantity of described anionic flocculant and the amount of described small floc sedimentation, anionic flocculant described in this self are relevant.Described anionic flocculant controls chemical feeding quantity, dosing speed, floc sedimentation growth rate and time etc. by PLC, and wherein, the add-on of described anionic flocculant is the mud of 1 ‰-2 ‰ quality, and to add concentration be 0.5 ‰-1.5 ‰.Granulation precipitation process in, described floc sedimentation grow up formed precipitation time be 15-30 second.
Described sludge flocculation concentration technique comprises the step of filtering described precipitation further.
Because the solids component in mud comprises organism and ash content, this organism mainly comprises emplastic and fiber, the cation polymeric flocculant added can with the electronegative neutralization reaction of carrying out of emplastic in mud, the moisture that emplastic is contained is discharged, mud is that easy dewatering state cationic polymers also plays bridging action, be formed with the thick floc sedimentation of some strength, thus solid-liquid separation when promoting mechanical dehydration, but, because the electrical counteract being included in the emplastic in floc sedimentation is incomplete, make Floc strength low, dehydration property is poor.In sludge flocculation concentration technique provided by the invention, first add the described cationic flocculant that molecular weight is 800-1000 ten thousand, because its molecular weight is smaller, ion density is high, can fully in and electric charge in mud, form the smaller floc sedimentation of particle diameter; Add anionic flocculant again and promote that described floc sedimentation is grown up rapidly, form the precipitation comparing and be easy to remove, thus reach that high-level efficiency is high, the object of strong adaptability, non-secondary pollution and harm lignin-sludge.In addition, sludge flocculation precipitation concentration treatment process provided by the invention, control the automatic preparation of medicament by PLC and quantitatively add described positively charged ion and anionic flocculant, the automatic ration realizing medicament adds, and level of automation is high.
Technical scheme provided by the invention is set forth further below with specific embodiment.
Embodiment 1
A kind of sludge flocculation concentration technique, it comprises the following steps:
Form small floc sedimentation: the concentration adding 2 ‰ quality in domestic sludge is the cationic-type polyacrylamide of 1 ‰, and stir with 50 revs/min of speed, to neutralize the electric charge in this mud, form the small floc sedimentation that particle diameter is 0.1-0.5mm, wherein, the molecular weight of described cationic-type polyacrylamide is 8,000,000;
Granulation precipitates: state to formation the anion-polyacrylamide that the concentration adding 1.5 ‰ quality in the mud of small floc sedimentation is 1 ‰ concentration to some extent, make described floc sedimentation fast growth within 40-50 time second, form precipitation, wherein, the molecular weight of described anion-polyacrylamide is about 1,400 ten thousand;
Filter: adopt the above-mentioned precipitation of metre filter.
Embodiment 2
A kind of sludge flocculation concentration technique, it comprises the following steps:
Form small floc sedimentation: the concentration adding 1 ‰ quality in paper mill sludge be 1 ‰ cationic-type polyacrylamide and with 40 revs/min of stirrings, to neutralize the electric charge in this mud, form the small floc sedimentation that particle diameter is 0.5-1mm, wherein, the molecular weight of described cationic-type polyacrylamide is 8,000,000;
Granulation precipitates: stating to formation the concentration adding 1 ‰ quality in the mud of small floc sedimentation is to some extent the anion-polyacrylamide of 1 ‰, make described floc sedimentation fast growth within 15-20 time second, form precipitation, wherein, the molecular weight of described anion-polyacrylamide is about 1,400 ten thousand;
Filter: adopt the above-mentioned precipitation of metre filter.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.Be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (11)
1. a sludge flocculation concentration technique, it comprises the following steps:
Form small floc sedimentation: in pending mud, add cationic flocculant and stir, to neutralize the electric charge in this mud, form small floc sedimentation;
Granulation precipitates: in the mud being formed with small floc sedimentation, add anionic flocculant, described floc sedimentation is grown up, and forms precipitation.
2. sludge flocculation concentration technique as claimed in claim 1, it is characterized in that, described cationic flocculant is positively charged organic polymer coargulator, and molecular weight is 8,000,000-1,000 ten thousand, ion density 20%-50%.
3. sludge flocculation concentration technique as claimed in claim 2, it is characterized in that, described organic polymer coargulator is polyacrylamide, poly-aluminium, Polyferric Sulfate, poly-activated silica gel and modifier, polyaluminum sulfate ferric-aluminum chloride or polymerization Polyferric Sulfate silicon flocculation agent.
4. the sludge flocculation concentration technique as described in any one of claim 1-3, is characterized in that, the stirring velocity in the step of the small floc sedimentation of described formation is 30-50 rev/min.
5. sludge flocculation concentration technique as claimed in claim 4, it is characterized in that, the particle diameter of described small floc sedimentation is approximately 0.1-1mm.
6. sludge flocculation concentration technique as claimed in claim 1, is characterized in that, described cationic flocculant control by PLC the mud that add-on is 1 ‰-3 ‰ quality, and to add concentration be 0.5 ‰-1.5 ‰.
7. sludge flocculation concentration technique as claimed in claim 1, it is characterized in that, described anionic flocculant is the organic floculant with negative charge, and molecular weight is 1,000 ten thousand-1,800 ten thousand, and ion density is 10%-35%.
8. the sludge flocculation concentration technique as described in claim 1 or 7, is characterized in that, it is the mud of 1 ‰-2 ‰ quality that described anionic flocculant controls add-on by PLC, and to add concentration be 0.5 ‰-1.5 ‰.
9. sludge flocculation concentration technique as claimed in claim 1, is characterized in that, comprise the step of filtering described precipitation further.
10. sludge flocculation concentration technique as claimed in claim 1, it is characterized in that, described cationic flocculant is molecular weight is 8,000,000-1,000 ten thousand, and the cationic-type polyacrylamide of ion density 20%-50%; Described anionic flocculant is molecular weight is 1,000 ten thousand-1,800 ten thousand, and ion density is 10%-35% anion-polyacrylamide.
11. sludge flocculation concentration techniques as claimed in claim 1, it is characterized in that, described mud is municipal sludge, printing and dyeing sludge, vinasse or paper pulp.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510070875.3A CN104591522A (en) | 2015-02-11 | 2015-02-11 | Sludge flocculation-concentration treatment technique |
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| CN201510070875.3A CN104591522A (en) | 2015-02-11 | 2015-02-11 | Sludge flocculation-concentration treatment technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104752A (en) * | 2019-05-24 | 2019-08-09 | 上海同瑞环保科技有限公司 | A kind of method of sewage coagulating treatment |
| CN110127828A (en) * | 2019-06-11 | 2019-08-16 | 兖州煤业股份有限公司 | Coal washing water compound ion flocculation concentration system and its method for handling coal washing water |
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| CN1048532A (en) * | 1989-07-03 | 1991-01-16 | 株式会社青木建设 | The treatment process of low turbidity waste sewage |
| CN101700921A (en) * | 2009-11-26 | 2010-05-05 | 上海复泽环境科技有限公司 | Polymer coagulant |
| CN102267797A (en) * | 2011-07-25 | 2011-12-07 | 中国船舶重工集团公司第七○二研究所 | Integral process for ecologically desilting and curing sludge |
| CN102603152A (en) * | 2012-03-08 | 2012-07-25 | 佛山市环保技术与装备研发专业中心 | Sludge deep dehydration conditioning agent and application thereof |
| CN103241913A (en) * | 2012-02-07 | 2013-08-14 | 中国石油天然气股份有限公司 | Combined treatment method of oily sludge |
| CN104193138A (en) * | 2014-09-19 | 2014-12-10 | 江苏涞森环保设备有限公司 | Sludge dewatering system |
-
2015
- 2015-02-11 CN CN201510070875.3A patent/CN104591522A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048532A (en) * | 1989-07-03 | 1991-01-16 | 株式会社青木建设 | The treatment process of low turbidity waste sewage |
| CN101700921A (en) * | 2009-11-26 | 2010-05-05 | 上海复泽环境科技有限公司 | Polymer coagulant |
| CN102267797A (en) * | 2011-07-25 | 2011-12-07 | 中国船舶重工集团公司第七○二研究所 | Integral process for ecologically desilting and curing sludge |
| CN103241913A (en) * | 2012-02-07 | 2013-08-14 | 中国石油天然气股份有限公司 | Combined treatment method of oily sludge |
| CN102603152A (en) * | 2012-03-08 | 2012-07-25 | 佛山市环保技术与装备研发专业中心 | Sludge deep dehydration conditioning agent and application thereof |
| CN104193138A (en) * | 2014-09-19 | 2014-12-10 | 江苏涞森环保设备有限公司 | Sludge dewatering system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104752A (en) * | 2019-05-24 | 2019-08-09 | 上海同瑞环保科技有限公司 | A kind of method of sewage coagulating treatment |
| CN110127828A (en) * | 2019-06-11 | 2019-08-16 | 兖州煤业股份有限公司 | Coal washing water compound ion flocculation concentration system and its method for handling coal washing water |
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Application publication date: 20150506 |