CN103073169A - Sludge dehydration adopting dual polymer processing - Google Patents
Sludge dehydration adopting dual polymer processing Download PDFInfo
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- CN103073169A CN103073169A CN201110344579XA CN201110344579A CN103073169A CN 103073169 A CN103073169 A CN 103073169A CN 201110344579X A CN201110344579X A CN 201110344579XA CN 201110344579 A CN201110344579 A CN 201110344579A CN 103073169 A CN103073169 A CN 103073169A
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- Prior art keywords
- biological sludge
- composition
- multipolymer
- linear aliphatic
- dalton
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- 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
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/365—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds from petrochemical industry (e.g. refineries)
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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
- C02F2305/00—Use of specific compounds during water treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Sludge (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a dual polymer processing system used in biological sludge processing. The dual polymer processing process adopts a coagulant and a flocculant. The coagulant is composed of a copolymer of epichlorohydrin and dimethylamine, and can be cross-linked. The crosslinking agent can be one or more selected from various compounds.
Description
Technical field
The present invention relates to composition and be used for the auxiliary method of dewatering of biological sludge.
Background technology
Dispose of sewage and the activated sludge process of trade effluent in produce a large amount of mud.At present, the sludge treatment cost account for conventional wastewater treatment plant (WWTP) running cost 25～45%.Estimate that this cost continues to increase along with the cost up of garbage loading embeading and incineration.Even after dewatering process, conventional mud comprises a large amount of water (70～85wt%).So high water-content has significantly increased the sludge treatment cost, and therefore improving as much as possible dewatering efficiency is ideal to WWTP.
In dewatering process, biological sludge uses cationic polyacrylamide base polymer (flocculation agent) to process usually.Then, after treatment mud is with physical method such as separating centrifuge, band press or pressure filter dehydration.Flocculation agent can cause colloid and other suspended particles to be assembled, thereby improves rate of descent and the filterableness of mud.
Therefore, need to improve the dehydration of biological sludge.Ideally, the biological sludge dehydration that has improved will produce more cheap sludge treatment cost.
Summary of the invention
Flocculation is the committed step of sludge dewatering.The present invention is by adopting Dual polymerization thing treating processes to improve flocculation process.Except polymer flocculant, apply polymeric coagulant to improve flocculation efficiency to mud.With only comparing with the processing of flocculation agent of routine, this Dual polymerization thing facture can realize removing more water from mud, thereby reduces the sludge treatment cost of WWTP.
So, the present invention relates to comprise the composition of the material of the linearity of epoxy chloropropane and dimethylamine or cross-linking copolymer.When crosslinked, the multipolymer after crosslinked has the linking agent that is selected from by in the group of ammonia, linear aliphatic diamines, multiple linear aliphatic diamine or combinations thereof.Described linking agent can be quadrol, hexanediamine or its combination.Described composition can have the daltonian molecular weight of 500000 dalton to 3000000.
Perhaps, the present invention relates to process the method for biological sludge.Described biological sludge comprises water.Described method comprises the steps: to provide described biological sludge; Add the biological sludge that multipolymer condenses with formation to described biological sludge first; Add cationic flocculant to form the biological sludge that condenses of flocculation to the described biological sludge that condenses second; And remove at least a portion water from the biological sludge that condenses of described flocculation.Described multipolymer comprises epoxy chloropropane and dimethylamine.
By the following detailed description and in conjunction with claims, these and other feature and advantage of the present invention will become obvious.
Description of drawings
Read after the following the detailed description and the accompanying drawings, benefit of the present invention and advantage will become more apparent those of ordinary skills, wherein:
Fig. 1 is the result's of explanation embodiment 1 figure; And
Fig. 2 is the result's of explanation embodiment 2 figure.
Embodiment
Although the present invention can implement in a variety of forms, below will describe at present preferred embodiment, should understand the disclosure and should be considered to example of the present invention, rather than will limit the invention to the embodiment of setting forth.
What should be further understood that is the title of these chapters and sections of present specification, and namely " embodiment " relates to the requirement of United States Patent Office (USPO), and do not hint, also should not be inferred as restriction theme disclosed herein.
Biological (aerobic or anaerobism) mud is the plural gel shape material that is comprised of microorganism, mineral particle and extracellular polymer material.Biological sludge is generally the reject product of region WWTP, but those skilled in the art should understand the biological sludge that the present invention relates to any type.The surface of biological sludge particle is usually electronegative.In the sludge treatment of routine, the biological sludge molecular weight is the polyacrylamide cationic flocculant flocculation of 5000000～15000000g/mol.Those skilled in the art estimate to be less than 10% biological sludge total surface electric charge and are compensated by conventional positively charged ion flocculation treatment.Therefore, other cationic polymerss may be gathered on the surface of biological sludge.
In the present invention, biological sludge is processed with condensing agent first, and condensing agent is linearity or the cross-linking copolymer of epoxy chloropropane and dimethylamine.If selection cross-linking copolymer, this linking agent can be ammonia or linear aliphatic diamines.The group that the preferred optional free quadrol of linking agent, hexanediamine and their combination form.Hexanediamine also is known as title hexane-1,6-diamines, 1，6-diaminohexane and 1,6-hexane diamines.The preferred molecular weight ranges of multipolymer is 500000 to 3000000 dalton.
In processing, condensing agent forms elementary floss.For example, behind the condensing agent that adds 100ppm, the median size of region mud sample increases to 185 μ m from 37 μ m.Elementary throw out can be seen with bore hole, and they further flocculate with cationic flocculant before dehydration.
The optimal dose of condensing agent and flocculation agent changes between mud and mud, and can be measured by vibration test (jar test).Because the surface-area that reduces and the electric charge demand of elementary throw out, if use identical flocculation agent, the optimal dose of flocculation agent is comparable only with flocculation agent process few 30～80% in the Dual polymerization thing process.
Although many patents and document have been reported the sludge treatment with two or more chemical, we find that epoxy chloropropane-dimethyl amine condensing agent is effective especially to processing biological sludge.Condensing agent have very high cationic charge density and with biological sludge surface mortise.Condensing agent than small molecular weight also can make the condensing agent molecule penetrate deeplyer in mud gel matrix inside.Although have close effect such as conventional inorganic coagulants such as poly aluminium chlorides, the polymer property of epoxy chloropropane-dimethyl amine condensing agent causes mud granule to be gathered into elementary throw out.The floss that is completed into that is made of elementary throw out has the throw out intensity of more dense structure and Geng Gao; Therefore, in dehydration, realize higher mud cake ridity.
In one embodiment, multipolymer is crosslinked with linking agent.The group that the optional free ammonia of linking agent, linear aliphatic diamines, multilinear aliphatic diamine and their combination form.The preferred embodiment of linking agent comprises quadrol and hexanediamine.
In one embodiment, add above-mentioned multipolymer to the weight concentration less than 800ppm to biological sludge first.
In one embodiment, dewater with physical method.The example of physical method includes, but are not limited to filter and centrifugation.The technician of biological sludge process field will be readily appreciated that the whether physical method in the above-mentioned explicans of a certain method.
In one embodiment, under mixing, carry out the interpolation of condensing agent and/or flocculation agent.Yet, can exist and will need under mixing, not add the other technologies of condensing agent and/or flocculation agent.This technology can be from Illinois, USA 60563, Naperville, the PARETO of the nail (unit of length) section technology of Diehl West Road 1601 Ondeo Nalco Co., or other similar techniques.
Embodiment
Provide following examples to be used for understanding better the present invention.These embodiment will be understood as that scope of the present invention is contracted to beyond the claims speech range.
Embodiment 1:
Obtain mud sample (2.1% total suspended solid (" TSS ")) from region WWTP.Mud after the on-the-spot dehydration has 16.5% mud cake solid content.Cationic flocculant is selected from nail (unit of length) section nucleocapsid
The flocculation agent of series.Mud sample and polymers soln mix by the vibration test machine, and record the capillary suction time (CST) of treated mud.The best polymer dosimetry is the polymer concentration with minimum CST value.Then, the mud of processing dewaters in being similar to the laboratory filtration unit of industry with press apparatus.The gained sludge cake is dried to weight and the solid content of analysis constant under 105 ℃.As seen from Figure 1, the method for only processing with flocculation agent has about 16% mud cake solid content, and with the 133ppm condensing agent this content is increased to approximately 19%, and further is increased to about 20% with the 266ppm condensing agent.Optimum flocculent dosage is reduced to 30～90ppm from about 120～200ppm.Under the 133ppm condensing agent concentration, total sludge volume is reduced to about 16%.
Embodiment 2:
Obtain mud sample (3.7%TSS) from refinery WWTP.Mud after the on-the-spot dehydration has 15.6% mud cake solid content.Testing program is similar to the scheme of embodiment 1.As seen from Figure 2, condensing agent adds that the process of flocculation agent has about 21% mud cake solid content, and this solid content is than only the process with flocculation agent is high by 4～6%.This is equivalent to total sludge volume minimizing of about 20%.
All patents of quoting in the literary composition are incorporated herein by reference, and no matter whether article of the present disclosure is specifically so quoted.
In the disclosure, term " " is used for comprising single and multiple.On the contrary, to multiple project any quote should comprise when suitable single.
The above should be understood and can carry out many modifications and changes and do not deviate from the newly-designed true spirit of the present invention and scope.It is not restrictive should understanding for described embodiment or embodiment, or should not be inferred as restrictive.The disclosure is will contain in the scope that all such modifications all fall within claims.
Claims (15)
1. the composition of the material of a cross-linking copolymer that comprises epoxy chloropropane and dimethylamine, described cross-linking copolymer has the linking agent that is selected from the group that is comprised of ammonia, linear aliphatic diamines, multiple linear aliphatic diamine and their combination.
2. composition as claimed in claim 1, wherein said linear aliphatic diamines is selected from the group that is comprised of quadrol and hexanediamine.
3. composition as claimed in claim 1, wherein said multiple linear aliphatic diamine is quadrol and hexanediamine.
4. composition as claimed in claim 1, wherein molecular weight is 500000 dalton to 3000000 dalton.
5. method of processing biological sludge, described biological sludge comprises water, said method comprising the steps of:
Described biological sludge is provided;
Add multipolymer to described biological sludge first, described multipolymer comprises epoxy chloropropane and dimethylamine, and described first adds the biological sludge that generation is condensed;
Add cationic flocculant to the described biological sludge that condenses second, described second adds the biological sludge that condenses that produces flocculation;
Remove at least a portion water from the biological sludge that condenses of described flocculation.
6. method as claimed in claim 5, wherein said multipolymer is crosslinked with linking agent.
7. method as claimed in claim 6, wherein said linking agent is selected from the group that is comprised of ammonia, linear aliphatic diamines, a plurality of linear aliphatic diamines and their arbitrary combination.
8. method as claimed in claim 6, wherein said linking agent is quadrol.
9. method as claimed in claim 6, wherein said linking agent is hexanediamine.
10. method as claimed in claim 6, wherein said multipolymer has the daltonian molecular weight of 500000 dalton to 3000000.
11. method as claimed in claim 5, the weight concentration that wherein said multipolymer is added into less than 800ppm to described biological sludge first.
12. method as claimed in claim 5, wherein said removal is carried out with physical method.
13. method as claimed in claim 12, wherein said physical method are selected from the group that is comprised of filtration, centrifugation and their combination.
14. method as claimed in claim 4, wherein said interpolation step is carried out under mixing.
15. the composition of the material of a linear copolymer that comprises epoxy chloropropane and dimethylamine, wherein said composition has the molecular weight in 500000 dalton to the 3000000 dalton scopes.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110344579XA CN103073169A (en) | 2011-10-25 | 2011-10-25 | Sludge dehydration adopting dual polymer processing |
| KR1020147013975A KR20140088576A (en) | 2011-10-25 | 2012-10-25 | Sludge dewatering with dual polymer conditioning |
| SG10201404080PA SG10201404080PA (en) | 2011-10-25 | 2012-10-25 | Sludge Dewatering With Dual Polymer Conditioning |
| PCT/CN2012/083513 WO2013060280A1 (en) | 2011-10-25 | 2012-10-25 | Sludge dewatering with dual polymer conditioning |
| SG11201401019QA SG11201401019QA (en) | 2011-10-25 | 2012-10-25 | Sludge dewatering with dual polymer conditioning |
| ARP120104014A AR088543A1 (en) | 2011-10-25 | 2012-10-26 | DUAL POLYMER CONDITIONER OF WASTEWATER |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110344579XA CN103073169A (en) | 2011-10-25 | 2011-10-25 | Sludge dehydration adopting dual polymer processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103073169A true CN103073169A (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110344579XA Pending CN103073169A (en) | 2011-10-25 | 2011-10-25 | Sludge dehydration adopting dual polymer processing |
Country Status (5)
| Country | Link |
|---|---|
| KR (1) | KR20140088576A (en) |
| CN (1) | CN103073169A (en) |
| AR (1) | AR088543A1 (en) |
| SG (2) | SG10201404080PA (en) |
| WO (1) | WO2013060280A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110903015A (en) * | 2019-11-30 | 2020-03-24 | 河南永泽环境科技有限公司 | Production method of environment-friendly composite sludge conditioner |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL234889A0 (en) * | 2014-09-29 | 2014-12-31 | Tevet Water Tech Ltd | Animal farming wastewater treatment |
| FI20165978L (en) * | 2016-12-16 | 2018-06-17 | Kemira Oyj | Method for dewatering of sludge |
| ES2960387T3 (en) * | 2017-12-15 | 2024-03-04 | Kemira Oyj | Method for dewatering biological sludge using a polymeric flocculant |
| CN113415963A (en) * | 2021-05-13 | 2021-09-21 | 北京云水浩瑞环境科技有限公司 | Method for treating sludge |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06134492A (en) * | 1992-03-18 | 1994-05-17 | Konan Kagaku Kogyo Kk | Deodorizing agent of dehydrated sludge cake and preparation method thereof |
| CN1384806A (en) * | 1999-10-06 | 2002-12-11 | 卡米拉卡米股份公司 | Cationic polymers for sludge dewatering |
| CN1868911A (en) * | 2006-06-06 | 2006-11-29 | 山东大学 | Polyepichlorohydrin-dimethylamine organic polymer coargulator and its preparation technology |
| CN101802304A (en) * | 2007-09-12 | 2010-08-11 | 纳尔科公司 | Controllable filler prefloculation using a dual polymer system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5476522A (en) * | 1995-03-08 | 1995-12-19 | Nalco Chemical Company | Method for dewatering coal tailings using DADMAC/vinyl trialkoxysilane copolymers as a coagulant |
| US5597475A (en) * | 1995-07-28 | 1997-01-28 | Nalco Chemical Company | DADMAC/vinyl trialkoxysilane copolymers for dewatering copper and taconite slurries in the mining industry |
| CN101973688B (en) * | 2010-11-09 | 2012-04-18 | 沈阳华盈环保材料有限公司 | Organic high molecular composite flocculant and preparation method thereof |
| CN102070233B (en) * | 2010-11-27 | 2012-01-04 | 福州大学 | Quaternary ammonium salt positive ion-type organic polymeric flocculant and preparation method thereof |
-
2011
- 2011-10-25 CN CN201110344579XA patent/CN103073169A/en active Pending
-
2012
- 2012-10-25 WO PCT/CN2012/083513 patent/WO2013060280A1/en active Application Filing
- 2012-10-25 SG SG10201404080PA patent/SG10201404080PA/en unknown
- 2012-10-25 KR KR1020147013975A patent/KR20140088576A/en active Search and Examination
- 2012-10-25 SG SG11201401019QA patent/SG11201401019QA/en unknown
- 2012-10-26 AR ARP120104014A patent/AR088543A1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06134492A (en) * | 1992-03-18 | 1994-05-17 | Konan Kagaku Kogyo Kk | Deodorizing agent of dehydrated sludge cake and preparation method thereof |
| CN1384806A (en) * | 1999-10-06 | 2002-12-11 | 卡米拉卡米股份公司 | Cationic polymers for sludge dewatering |
| CN1868911A (en) * | 2006-06-06 | 2006-11-29 | 山东大学 | Polyepichlorohydrin-dimethylamine organic polymer coargulator and its preparation technology |
| CN101802304A (en) * | 2007-09-12 | 2010-08-11 | 纳尔科公司 | Controllable filler prefloculation using a dual polymer system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110903015A (en) * | 2019-11-30 | 2020-03-24 | 河南永泽环境科技有限公司 | Production method of environment-friendly composite sludge conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140088576A (en) | 2014-07-10 |
| SG11201401019QA (en) | 2014-07-30 |
| AR088543A1 (en) | 2014-06-18 |
| SG10201404080PA (en) | 2014-10-30 |
| WO2013060280A1 (en) | 2013-05-02 |
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Application publication date: 20130501 |