CN101891367B - Solidification and stabilization method of municipal sludge - Google Patents
Solidification and stabilization method of municipal sludge Download PDFInfo
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- CN101891367B CN101891367B CN2010102214897A CN201010221489A CN101891367B CN 101891367 B CN101891367 B CN 101891367B CN 2010102214897 A CN2010102214897 A CN 2010102214897A CN 201010221489 A CN201010221489 A CN 201010221489A CN 101891367 B CN101891367 B CN 101891367B
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000010802 sludge Substances 0.000 title claims abstract description 44
- 238000007711 solidification Methods 0.000 title claims abstract description 34
- 230000008023 solidification Effects 0.000 title claims abstract description 34
- 230000006641 stabilisation Effects 0.000 title claims abstract description 33
- 238000011105 stabilization Methods 0.000 title claims abstract description 33
- 239000004575 stone Substances 0.000 claims abstract description 96
- 239000002699 waste material Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 58
- 239000003469 silicate cement Substances 0.000 claims description 25
- 235000013312 flour Nutrition 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 239000011398 Portland cement Substances 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract 2
- 239000003381 stabilizer Substances 0.000 abstract 2
- 239000004568 cement Substances 0.000 description 12
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- 239000004567 concrete Substances 0.000 description 6
- 229910001385 heavy metal Inorganic materials 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000001988 toxicity Effects 0.000 description 4
- 231100000419 toxicity Toxicity 0.000 description 4
- 238000011026 diafiltration Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000010954 inorganic particle Substances 0.000 description 3
- 238000002386 leaching Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 210000000476 body water Anatomy 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001473 noxious effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical group O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 125000005624 silicic acid group Chemical group 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a solidification and stabilization method of municipal sludge, wherein the water content of the municipal sludge is 60-85%, the method takes a mixture of stone waste and portland cement as a solidification stabilizer, the solidification stabilizer is added into the municipal sludge, and the mixture is uniformly stirred to obtain a solidified body which can be directly buried or used as a resource, wherein the stone waste is generated after stone is cut and processed by a stone factory, the stone waste is stone powder, stone mud or a combination of the stone powder and the stone mud, the solid content of the stone waste is 70-100%, the adding amount of the stone waste is 40-115% and the adding amount of the portland cement is 5-15% based on the weight of the municipal sludge. The invention uses the stone waste for the stable solidification of the sludge, can achieve the effect of treating waste by waste, effectively avoids secondary pollution in the process of solidifying the municipal sludge and greatly reduces the treatment cost.
Description
Technical field
The invention belongs to the environmental geotechnical technical field, particularly a kind of solidification and stabilization method of municipal sludge.
Background technology
Municipal sludge is the solid waste that in water treatment procedure, produces; Objectionable constituent in the municipal sludge are than higher; Like pathogenic micro-organism, salinity, organic pollutant, heavy metal etc., the harm of municipal sludge at present is also rarely known by the people, is usually illegally taken; Cause the heavy metal accumulation in soil to exceed standard, the hardening soil, human residential environment and food are polluted unintentionally and are destroyed.Useful practice and exploring have all been carried out for the treatment and disposal of municipal sludge in countries in the world, and the method that is adopted mainly contains landfill, ocean tipping, burning, agricultural etc.Wherein, tipping basically need not, it is very high to burn cost, agricultural because pollution object height is restricted, so be main from present China economic level with landfill, it is proper that appropriateness is walked the resource utilization road.But because municipal sludge water ratio very high (water ratio about 60%～85%), geotechnological water ratio is up to percent hundreds of, and therefore, its flowability is very strong; Mechanical property is very poor, does not directly carry out landfill if add processing, is easy to bring out the place slumping; Be difficult to satisfy the requirement of landfill yard, and the objectionable constituent in the mud are than higher, not stabilization in addition to soil nature; Then can be bigger to environmental hazard, therefore, before landfill or resource utilization, must do solidification and stabilization and handle.
Curing technology starts from the processing of the fifties in 19th century for radwaste.Solidify to refer to and add solidifying agent in waste, make it become not flowable or formation solid process.Stabilization is meant the material that noxious pollutant is transformed into low-solubility, hypotoxicity and Hypomobility, to reduce the technology that noxious pollutes.The purpose of solidification and stabilization mainly contains two: the one, change the flowability of pollutent through the method for physics or chemistry, to reduce the probability that pollutes; The 2nd, the mechanical characteristic that strengthens handled object is so that it is utilized in construction.
For the solidification and stabilization of municipal sludge, the solidifying agent that tradition is added mainly contains: lime, flyash, cement, some special agents, encapsulate etc.But see that from service condition the cost of these solidifying agent is than higher, complex disposal process, the material that is added is more, and treatment effect is difficult to meet the demands, and has therefore influenced the popularization of municipal sludge solidification and stabilization technology.Therefore demand seeking solidification and stabilization material reasonable economically, art recognized urgently and replace the conventional material.
Along with country builds on a large scale, promoted the fast development of building trade in recent years, thereby the stone material industry also obtains develop rapidly, the stone material waste of discharging is also increasing, has become enterprise, and even entire society's white elephant.The stone material waste mainly refers to stone flour or the stone mud that stone material produces in cutting processing, the output of fundamental sum mud is suitable at present for its output, and the harm that causes is also not known.Just present, mostly adopt landfill to stack or arbitrarily throw aside, the problem of generation is to exhaust the people and drain the treasury like this, takies a large amount of good farmlands, contaminate environment.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that overcomes prior art, and a kind of solidification and stabilization method of improved municipal sludge is provided.
For solving above technical problem, the present invention adopts following technical scheme:
A kind of solidification and stabilization method of municipal sludge, the water ratio of said municipal sludge are 60%～85%, this method with the mixture of stone material waste and silicate cement as solidifying stablizer; To solidify stablizer joins in the said municipal sludge; The cured body that stirs promptly and to obtain direct landfill or to be used as resource utilization, wherein, said stone material waste produces after by stone material factory's cutting and processing stone material; Said stone material waste is a stone flour; Stone mud or the combination of the two, the solid content of said stone material waste is 70%～100%, is benchmark with the weight of said municipal sludge; Said stone material waste add-on is 40%～115%, and the add-on of silicate cement is 5%～15%.
According to an aspect of the present invention, the stone material waste of adding is a stone flour, is benchmark with the weight of municipal sludge, and stone material waste add-on is 40%～80%, and the add-on of silicate cement is 5%～15%.When said cured body directly was used for landfill, the add-on of stone material waste was preferably 40%～70%, and the add-on of silicate cement is preferably 5%～8%; When said cured body was used as resource utilization, the add-on of stone material waste was preferably 50%～80%, and the add-on of silicate cement is preferably 8%～15%.
According to another aspect of the invention, the stone mud that said stone material waste is a solid content 70%～80% is benchmark with the weight of municipal sludge, and stone material waste add-on is 50%～115%, and the add-on of silicate cement is 5%～15%.When said cured body directly was used for landfill, the add-on of stone material waste was preferably 50%～100%, and the add-on of silicate cement is preferably 5%～8%.Be used as resource utilization at said cured body, the add-on of stone material waste is preferably 62.5%～115%, and the add-on of silicate cement is preferably 8%～15%.
Because adopt technique scheme, the present invention compared with prior art has the following advantages:
1, the present invention is suitable with the output of municipal sludge as the output of the stone material waste that solidifies stablizer, takes convenience; Again, in the solidification and stabilization process, only add stone material waste and silicate cement, stirring and evenly mixing gets final product, and drawn material is few, and is simple to operate.
2, the stone material waste is used to handle mud, can reaches the effect of the treatment of wastes with processes of wastes against one another;
3, the cement mixing content of the actual use of the present invention is less, but effect is obvious, and cost obtains bigger control, remarkable in economical benefits;
4, the intensity and the long-term water stability that adopt the present invention to handle the after fixing body are largely increased, and have effectively contained heavy metal and organic diafiltration, can not cause secondary pollution to environment.
Embodiment
It is 70%～80% stone mud (wet method) or stone flour (dry method) or the mixture of the two that the present invention at first takes the stone material waste-solid content that is produced behind stone material factory's cutting and processing stone material; Because the particle of stone mud (stone flour) own is fine and smooth; Need not sieve, can directly take.The ordinary Portland cement that takes a morsel again mixes stone flour (stone mud) and cement with municipal sludge according to a certain percentage, adopts artificial mix or machinery to mix therebetween stone flour (stone mud), cement are fully contacted with mud, and mix evenly gets final product.
Requirement according to after handling is different, and stone flour (stone mud), cement, this three's of mud volume and ratio be difference to some extent.Through lot of test, the present invention advises adopting following volume and ratio, can obtain preferable effect:
(1) do landfill as handling the after fixing body and function, with reference to domestic and American-European standard code, the cured body water ratio must reach less than 40%, 7 day unconfined compression strength more than the 50kpa, and 28 days unconfined compression strength reaches more than the 340kpa.Satisfying above requirement, is benchmark with the weight of mud, and can mix the stone material waste: stone flour 40%～70% or stone mud 50%～100%, the add-on of silicate cement are 5%～8%.
(2) do resource utilization as handling the after fixing body and function,, relatively be fit to do pavior according to present achievement in research.With reference to domestic and American-European standard code, must reach less than 40%, 7 day unconfined compression strength beyond the above condition of 50kpa except satisfying the cured body water ratio, 28 days unconfined compression strength will reach more than the 1040kpa.Meeting above requirement, is benchmark with the weight of mud, the add-on of stone material waste can for: stone flour 50%～80% or stone mud 62.5%～115%, the add-on of silicate cement can be 8%～15%.
The present invention adopts this technical scheme, mainly based on the consideration of following several respects:
(1) for municipal sludge, its water ratio is very big, and the organism in the mud and heavy metal concentration are dense; Can in reaction process, hinder the carrying out of hydrated cementitious product, therefore; Adopt traditional solidify material the cement amount that will consume very huge; And from treatment effect, the mechanical property of the cured body that obtains after the processing and stable inequality strong man meaning are difficult to reach corresponding requirement.
(2) for municipal sludge; Therefore inorganic particle composition wherein seldom, preferably mixes more inorganic particle in the solidification and stabilization process; Make the reaction of inorganic particle and cement; Generate hard product, objectionable impuritiess such as organism and heavy metal are fixed therein, its unlikely diafiltration under the variation of environment is come out.And adopt the stone material waste just in time can satisfy such requirement.Stone mud or stone flour itself are wastes; In general its particle comes the nature mineral; Toxicity is not strong; Though, be easy to cause exceeding standard of some element in the environment, thereby cause new pollution problem unlike adopted waste such as phosphogypsum, flyash etc. can improve cured body intensity to a certain extent in the past.Adopt the stone material waste both can improve the performance of cured body, can avoid again producing new pollution problem, kill two birds with one stone.
(3) stone material waste wide material sources, so long as the place of building materials is arranged, stone material is then essential; Its output and sludge yield are suitable; It is very convenient to draw materials, and because it is a waste, does not need to spend in addition to buy; Can reduce the Master Cost in the solidification and stabilization process greatly, help reducing cost.
(4) silicate cement joins in the mud, can absorb a large amount of free water generation aquation hydrolysis reaction in the mud, and concrete reaction formula is formula (a) and (b), (c), (d) as follows.In addition, the CaO content in the stone material waste is than higher, adds in the middle of the mud, makes the C in the pore water of mud
a 2+Be in hypersaturated state, thereby guarantee CSH aquation gel and C that cement generates
a(OH)
2Unaffected and continuous formation, and can make C
a(OH)
2More abundant.And the silicic acid group in the stone material waste and aluminic acid group are active S
iO
2With active A l
2O
3Component content is also very high, receives alkali-activator C
a(OH)
2Effect carries out coagulating firmly reaction with it, generates hydrated calcium silicate and drated calcium aluminate, makes product have the hydraulicity, and then obtains higher intensity and the quality of Geng Mi, has stoped the diafiltration of organism and heavy metal.Concrete reaction formula is formula (e), (f) as follows.
2(CaO)
3SiO
2+7H
2O→(CaO)
3(SiO
2)
2(H
2O)
4+3Ca(OH)
2 (a)
2(CaO)
2SiO
2+5H
2O→(CaO)
3(SiO
2)
2(H
2O)
4+Ca(OH)
2 (b)
(CaO)
2Al
2O
3+3(CaO)SO
3(H
2O)
2+26H
2O→(CaO)
6(Al
2O
3)(SO
3)
3(H
2O)
32 (c)
(CaO)
4(Al
2O
3)(Fe
2O
3)+7H
2O→(CaO)
3(Al
2O
3)(H
2O)
6+(CaO)(Fe
2O
3)(H
2O) (d)
xCa(OH)
2+SiO
2+m
1H
2O→xCaO·SiO
2·n
1H
2O (e)
yCa(OH)
2+Al
2O
3+m
2H
2O→yCaO·Al
2O
3·n
2H
2O (f)
To combine concrete embodiment that the present invention is done further detailed explanation below:
Embodiment 1
Implemented according to the invention in the municipal sludge solidification and stabilization method, the water ratio of municipal sludge is about 77%, is benchmark with the weight of municipal sludge, adds stone flour 50% and silicate cement 6.5%.Concrete solidification and stabilization process is following:
According to above proportioning, in every 1000kg mud, add the stone flour of 500kg and the silicate cement of 65kg, fully mix is even; The unconfined compression strength that records sample after 7 days reaches 115kpa, and water ratio is that 15.34%, 14 day intensity reaches 290pa; Intensity reached 420kpa in 21 days, and intensity reached 510kpa in 28 days, reached the requirement of landfill far away; And along with the growth of time, intensity progressively increases.The 28 day length of time test specimen through 12 drying and watering cycles after intensity do not fall, specimen shape remains intact basically, proves that long-term water stability is strong.Mixed volume does not expand in the solidification and stabilization process, and toxicity characteristic leaching procedure each item index all meets the demands.Actual procedure is simple to operate, and handling 1kg mud only needs about 0.02 yuan (cement per ton is by 280 yuan), and economic benefit is obvious.
Embodiment 2
Implemented according to the invention in the municipal sludge solidification and stabilization method, the water ratio of municipal sludge is about 77%, is benchmark with the weight of municipal sludge, adds stone flour 60% and silicate cement 12%.Concrete solidification and stabilization process is following:
According to above proportioning, in every 1000kg mud, add the stone flour of 600kg and the silicate cement of 120kg, fully mix is even; The unconfined compression strength that records sample after 7 days reaches 360kpa, and water ratio is that 10.05%, 14 day intensity reaches 840kpa; Intensity reached 1190kpa in 21 days, and intensity reached 1470kpa in 28 days, reached the mechanical property requirements of pavior; And along with the growth of time, intensity progressively increases.The 28 day length of time test specimen through 12 drying and watering cycles after intensity do not fall, specimen shape remains intact basically, proves that long-term water stability is strong.Mixed volume does not expand in the solidification and stabilization process, and toxicity characteristic leaching procedure each item index all meets the demands.Actual procedure is simple to operate, and handling 1kg mud only needs about 0.033 yuan (cement per ton is by 280 yuan), and formed product can be used as pavior, remarkable in economical benefits.
Embodiment 3
Implemented according to the invention in the municipal sludge solidification and stabilization method, the water ratio of municipal sludge is about 77%, is benchmark with the weight of municipal sludge, adds stone mud 70% and silicate cement 9%.Concrete solidification and stabilization process is following:
According to above proportioning, in every 1000kg mud, add the stone mud (solid content is 80%) of 700kg and the cement of 90kg, fully mix is even; The unconfined compression strength that records sample after 7 days reaches 200kpa, and water ratio is that 13.18%, 14 day intensity reaches 520kpa; Intensity reached 812kpa in 21 days, and intensity reached 1080kpa in 28 days, reached the mechanical property requirements of pavior; And along with the growth of time, intensity progressively increases.The 28 day length of time test specimen through 12 drying and watering cycles after intensity do not fall, specimen shape remains intact basically, proves that long-term water stability is strong.Mixed volume does not expand in the solidification and stabilization process, and toxicity characteristic leaching procedure each item index all meets the demands.Actual procedure is simple to operate, and handling 1kg mud only needs about 0.025 yuan (cement per ton is by 280 yuan), remarkable in economical benefits.
To sum up, the present invention fully utilizes stone flour stone mud effectively, turns waste into wealth, and finds the stone material waste then can be improved treatment effect greatly as the solidification and stabilization material of municipal sludge, and has significantly reduced processing cost.
The foregoing description only is explanation technical conceive of the present invention and characteristics; Its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this; Can not limit protection scope of the present invention with this; All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1. the solidification and stabilization method of a municipal sludge, the water ratio of said municipal sludge is 60%～85%, it is characterized in that: this method with the mixture of stone material waste and silicate cement as solidifying stablizer; To solidify stablizer joins in the said municipal sludge; The cured body that stirs promptly and to obtain direct landfill or to be used as resource utilization, wherein, said stone material waste produces after by stone material factory's cutting and processing stone material; Said stone material waste is a stone flour; Stone mud or the combination of the two, the solid content of said stone material waste is 70%～100%, is benchmark with the weight of said municipal sludge; Said stone material waste add-on is 40%～115%, and the add-on of silicate cement is 5%～15%.
2. solidification and stabilization method according to claim 1; It is characterized in that: said stone material waste is a stone flour; Weight with said municipal sludge is benchmark, and said stone material waste add-on is 40%～80%, and the add-on of silicate cement is 5%～15%.
3. solidification and stabilization method according to claim 2 is characterized in that: said cured body directly is used for landfill, and the add-on of said stone material waste is 40%～70%, and the add-on of said silicate cement is 5%～8%.
4. solidification and stabilization method according to claim 2 is characterized in that: said cured body is used as resource utilization, and the add-on of said stone material waste is 50%～80%, and the add-on of said silicate cement is 8%～15%.
5. solidification and stabilization method according to claim 1; It is characterized in that: the stone mud that said stone material waste is a solid content 70%～80%; Weight with said municipal sludge is benchmark, and said stone material waste add-on is 50%～115%, and the add-on of silicate cement is 5%～15%.
6. solidification and stabilization method according to claim 5 is characterized in that: said cured body directly is used for landfill, and the add-on of said stone material waste is 50%～100%, and the add-on of said silicate cement is 5%～8%.
7. solidification and stabilization method according to claim 5 is characterized in that: said cured body is used as resource utilization, and the add-on of said stone material waste is 62.5%～115%, and the add-on of said silicate cement is 8%～15%.
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| CN2010102214897A CN101891367B (en) | 2010-06-30 | 2010-06-30 | Solidification and stabilization method of municipal sludge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143555A (en) * | 2013-01-31 | 2013-06-12 | 清华大学 | Reducibility solidification stabilization method of processing soil polluted by toxic organics |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225858B (en) * | 2011-03-30 | 2012-11-07 | 同济大学 | Aluminium-based gelling curing agent for curing dehydrated sludge and application thereof |
| CN102897992B (en) * | 2012-10-18 | 2014-01-08 | 北京工业大学 | Method for solidifying and stabilizing sludge from urban sewage treatment plant |
| CN109293307A (en) * | 2018-10-17 | 2019-02-01 | 福建鹏翔实业有限公司 | A kind of recycling technique of stone material dead meal |
| CN110255836A (en) * | 2019-06-05 | 2019-09-20 | 路德环境科技股份有限公司 | Composition and sludge curing method for rapid curing municipal sludge |
| CN114477667B (en) * | 2021-11-26 | 2023-06-23 | 云南大地丰源环保有限公司 | Solidification method of arsenic-containing sludge |
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| CN101007696A (en) * | 2007-01-22 | 2007-08-01 | 湖南军信环保建设开发有限公司 | Sludge solidification and filling processing method |
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|---|---|---|---|---|
| CN101007696A (en) * | 2007-01-22 | 2007-08-01 | 湖南军信环保建设开发有限公司 | Sludge solidification and filling processing method |
| CN101265070A (en) * | 2008-04-17 | 2008-09-17 | 高康 | Sludge solidifying agent and application thereof |
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| Title |
|---|
| 车承丹等.城市污水处理厂污泥固化处理技术研究.《安全与环境学报》.2008,第8卷(第3期),第56-59页. * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103143555A (en) * | 2013-01-31 | 2013-06-12 | 清华大学 | Reducibility solidification stabilization method of processing soil polluted by toxic organics |
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| CN101891367A (en) | 2010-11-24 |
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