CN104310884A - Curing agent for attapulgite reinforced printing and dyeing sludge treatment and curing method thereof - Google Patents
Curing agent for attapulgite reinforced printing and dyeing sludge treatment and curing method thereof Download PDFInfo
- Publication number
- CN104310884A CN104310884A CN201410526438.3A CN201410526438A CN104310884A CN 104310884 A CN104310884 A CN 104310884A CN 201410526438 A CN201410526438 A CN 201410526438A CN 104310884 A CN104310884 A CN 104310884A
- Authority
- CN
- China
- Prior art keywords
- attapulgite
- printing
- composite additive
- dyeing sludge
- mass ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses curing agent for attapulgite reinforced printing and dyeing sludge treatment and a curing method thereof and belongs to the technical field of printing and dyeing sludge treatment. The mass ratio of attapulgite and a composite additive in the curing agent is (0.05-0.3): (0.3-1.2). The mass ratio of cement, coal ash and calcium chloride in the composite additive is (1-6): (0-5): (0-0.18). The curing method comprises the following steps: (1) determining the adding proportion of the composite additive and attapulgite; (2) crushing and grinding the composite additive and attapulgite and sieving by a 35-mesh sieve; (3) uniformly mixing the printing and dyeing sludge, attapulgite and the composite additive; and (4) packing the stirring product in a die in layers, demoulding in one day and maintaining for 1-28 days at room temperature. The curing agent disclosed by the invention is used for improving the geotechnical property of factory sludge in a printing and dyeing plant, so that the mechanical strength of cured sludge is improved and the leaching ability of pollutants is reduced. Sanitary landfill and resource utilization of sludge are facilitated.
Description
Technical field
The present invention relates to environment pollution control end, solid waste safe disposal technical field, more particularly, relate to the curing agent component in printing and dyeing sludge process disposal process, and utilize the method for this solidifying agent ultimate disposal printing and dyeing sludge.
Background technology
Dyeing waste water is one of typical difficult trade effluent, and its treating processes adopts materialization and biochemical processing process usually, can produce a large amount of mud in treating processes.Owing to containing a large amount of complicated difficult degradation materials such as dyestuff, auxiliary agent, slurry, heavy metal in dyeing waste water, thus, printing and dyeing sludge has complicated component, special and unmanageable characteristic.
Mud has the process means such as burning, compost, landfill, recycling usually.High owing to burning cost, easily produce secondary pollution, compost may bring the problems such as heavy metallic poison to farm crop again, and thus landfill and recycling are the relative more generally accepted modes of current sludge disposal.But usual printing and dyeing mill dispatches from the factory that moisture percentage in sewage sludge is high, complicated component, foul smelling, geotechnological poor performance, be not suitable for directly entering sanitary filling field, the control overflow of safe reuse to pollutent leaching concentration can not be met.Thus need to be cured stabilizing treatment to printing and dyeing sludge, improve the physical strength of mud, reduce the leaching ability of pollution substance.Select suitable solidifying agent for the shortening sludge disposal time, improve handling property, reduce processing cost and there is great meaning.
Attapulgite, has another name called polygorskite, and be a kind of clay mineral containing magnesium silicon components, chemical molecular formula is Mg
5si
8o
20(OH)
2(OH
2)
44H
2o.Within 1862, Russia scholar finds and called after polygorskite as far back as mining area, Ural.Nineteen thirty-five, France scholar found new clay in concavo-convex fort, and called after attapulgite, and rear proof is identical with polygorskite structure, and China starts late to attapulgite research still has certain gap with the world.But attapulgite is huge at China's reserves, account for the over half of the world, be easy to obtain.The layer chain crystalline structure of attapulgite uniqueness and larger specific surface area, extend its Application Areas greatly, and its stronger absorption property of Appropriate application can metal ingredient effectively in solidification sludge and organic constituent.
Through retrieval, Chinese Patent Application No. 200810036184.1, the applying date is on April 17th, 2008, invention and created name is: a kind of sludge solidifying agent and application, this application case discloses a kind of solidifying agent for municipal sewage plant drain sludge and river sludge and application, then and sludge agitation solidifying agent is mixed according to a certain percentage by aluminosulfate cement, gypsum, lime and setting accelerator, makes mud can reach the soil mechanics performance of landfill or other material of construction requirements.The mass ratio that sludge solidifying agent comprises each component raw material is: aluminosulfate cement 30%-60%, gypsum 20%-40%, lime 8%-20%, setting accelerator 1%-5%.Mud the time of maintenance 1-6 days, can reach intensity and the water content of landfill requirement after adding solidifying agent stirring solidification.After this application case sludge curing, toxic heavy metal ion is wrapped, and the pollution of mud is reduced, and the mud be cured does not have the stench of primary sludge, the harm to operator when decreasing operation.But this application case is directed to solidification municipal treatment mud and river sludge, in its handling object component, metal content and hazard level are all lower than industrial printing and dyeing sludge, this application case ultimate compression strength numerical value is just beyond 50kPa simultaneously, there is no certain allowance, also do not quantize the concrete solidification effect of various pollutent is described, actual directive significance is short of to some extent.
China Patent No. ZL201110342103.2, authorized announcement date is on July 24th, 2013, invention and created name is: heavy metal pollution bottle sediment curing agent, the solidifying agent of this application case comprises the cement that massfraction is 20% ~ 50%, massfraction is the flyash of 40% ~ 70%, massfraction be 5% ~ 15% wilkinite and massfraction be the admixture of 3% ~ 6%; Admixture comprises nitrocalcite, Sodium Nitrite, sodium metaaluminate, sodium sulfate, sodium lignosulfonate, sodium lauryl sulphate and trolamine, the solidifying agent process bed mud after fixing body intensity of this application case is high, and leach liquor pH and Leaching of Heavy Metals concentration are largely reduced.But the curing agent component of this application case is various, complicated operation, solidification purpose is indefinite simultaneously, if for landfill, admixture addition is excessive, high cost; If for building materials, with reference to external building standard, metal leaching concentration is too high.
Summary of the invention
1. invent the technical problem that will solve
The object of the invention is to for problems such as the existing printing and dyeing sludge solidification stable treatment technique sludge disposal time are long, sludge curing body physical strength is low, pollutent leaching concentration is high, provide a kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent and curing thereof, present invention improves printing and dyeing mill to dispatch from the factory the geotechnological performance of mud, improve the physical strength of solidification sludge, reduce the leaching ability of pollutent, be convenient to sanitary landfill and the recycling of mud.
2. technical scheme
For achieving the above object, technical scheme provided by the invention is:
A kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent of the present invention, comprise composite additive and attapulgite, described composite additive comprises cement, flyash and calcium chloride, and the mass ratio of cement, flyash and calcium chloride is (1 ~ 6): (0 ~ 5): (0 ~ 0.18); Described attapulgite and the mass ratio of composite additive are (0.05 ~ 0.3): (0.3 ~ 1.2).
Further, the mass ratio (0.1 ~ 1) of printing and dyeing sludge, attapulgite and composite additive: (0.05 ~ 0.3): (0.3 ~ 1.2).
Further, in described composite additive, the mass ratio of cement, flyash and calcium chloride is 2:5:0.06, and the mass ratio of described printing and dyeing sludge, attapulgite and composite additive is 1:0.2:0.706; Under this proportioning, printing and dyeing sludge cured body meets sanitary landfill standard.
Further, in described composite additive, the mass ratio of cement, flyash and calcium chloride is 1:0:0, and the mass ratio of described printing and dyeing sludge, attapulgite and composite additive is 0.433:0.133:0.433; Under this proportioning, printing and dyeing sludge cured body meets European Union's building materials and to pave the way relevant criterion.
A kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent curing of the present invention, the steps include:
(1) according to sludge characteristics and cured body whereabouts, the adding proportion of the ratio of each component contained by composite additive and composite additive, attapulgite is determined;
(2) by composite additive and attapulgite crushing grinding, 35 mesh sieves are crossed;
(3) determine ratio in step (1), printing and dyeing sludge, attapulgite, composite additive mixing are stirred evenly;
(4) layering of stirring product is loaded in mould, the demoulding after a day, room temperature maintenance 1 ~ 28 day.
Further, it is first the obtained composite additive of ratio mixing of 2:5:0.06 according to cement, flyash and calcium chloride mass ratio, be the ratio mixing of 1:0.2:0.706 more in mass ratio by printing and dyeing sludge, attapulgite and composite additive, room temperature maintenance 1 day, the printing and dyeing sludge cured body prepared meets sanitary landfill standard.
Further, it is first the obtained composite additive of ratio mixing of 1:0:0 according to cement, flyash and calcium chloride mass ratio, be the ratio mixing of 0.433:0.133:0.433 more in mass ratio by printing and dyeing sludge, attapulgite and composite additive, room temperature maintenance 28 days, the printing and dyeing sludge cured body prepared meets European Union's building materials and to pave the way relevant criterion.
Further, step (3) adopts JJ-5 cement plaster blender, and stirring intensity is first stirring at low speed 10 minutes, rear high-speed stirring 5 minutes.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with existing known technology, there is following unusual effect:
(1) a kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent of the present invention, by adding the conventional additive cement of attapulgite and compound proportioning, flyash and calcium chloride, series of chemical is produced with the water in printing and dyeing sludge, improve the geotechnological performance of mud, shorten set time, can sludge characteristics be improved by the collocation of the difference of solidifying agent each component, meet into garbage loading embeading factory, to repair the roads or as the different actual demand such as greening material of construction;
(2) a kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent curing of the present invention, curing operation is simple, and component is cheap and easy to get, and solidification intensity can adapt to multiple situation, pollutent good fixing effect, has good replicability and practicality.
Accompanying drawing explanation
Fig. 1 is the XRD figure of the printing and dyeing sludge cured body adopting solidifying agent provided by the invention to obtain.
Embodiment
For understanding content of the present invention further, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
A kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent of the present embodiment, comprise composite additive and attapulgite, described composite additive comprises cement, flyash and calcium chloride.According to moisture percentage in sewage sludge, organic content and heavy metal content and sludge curing application purpose, in conjunction with design software design expert8.0.6, after newly-built task, in mixture tab, select Optimal type, setting component number and each component maximin.The adding proportion of the ratio of each component contained by composite additive and composite additive, attapulgite is determined after Response to selection index.Sanitary landfill is mainly used in view of the present embodiment solidifies the printing and dyeing sludge cured body obtained.In composite additive, the mass ratio of cement, flyash and calcium chloride is 2:5:0.06, and the mass ratio of printing and dyeing sludge, attapulgite and composite additive is 1:0.2:0.706.
According to aforementioned proportion, 168.4g cement, 421.1g flyash and 5.05g calcium chloride are mixed to get composite additive, then by composite additive and attapulgite crushing grinding, cross 35 mesh sieves, to make follow-up mixing more even.Be add 168.4g attapulgite and above-mentioned composite additive in the printing and dyeing sludge of 86% at 842.1g water ratio, be placed in the mixing of JJ-5 cement plaster blender and stir evenly.The rotating speed of JJ-5 cement plaster blender is: low speed rotation 140 ± 5r/min, revolution 62 ± 5r/min; High speed rotation 285 ± 10r/min, revolution 125 ± 10r/min.By first for the mixture of printing and dyeing sludge, attapulgite, composite additive stirring at low speed 10 minutes, rear high-speed stirring 5 minutes, mixed.The lower leaf of stirring product room temperature loaded in 70.7mm × 70.7mm × 70.7mm mould inner pressure real, adopt compressed-air ejection after shaping 24h, pressurized air pressure is 6Bar, room temperature maintenance 1 day.
The unconfined compression strength of maintenance printing and dyeing sludge cured body after 1 day reaches 335.75kPa.Do XRD analysis to sample, as shown in Figure 1, cured body majority crystallographic structure is shown as quartz, calcite and tricalcium silicate, has also confirmed the existence of CSH gel from the side.Adopt sulfonitric method (HJ/T299-2007) to do Leaching test to cured body, wherein in leach liquor, the concentration of Cu and Pb is 0.455mg/L and 0.1827mg/L, meets sanitary landfill and building and to banket related request.
Contriver points out, although the present embodiment adopts conventional additive cement, flyash and calcium chloride composition composite additive, but the present embodiment is by carrying out ratio allotment to attapulgite, cement, flyash, calcium chloride and printing and dyeing sludge, make the conventional additive cement of attapulgite, compound proportioning, flyash and calcium chloride, produce series of chemical with the water in printing and dyeing sludge.Wherein, the compounds such as the tricalcium silicate in cement component, Dicalcium Phosphate (Feed Grade), tricalcium aluminate, calcium aluminoferrite and water carry out hydration reaction, form needle-like or the club shaped structure such as ettringite and CSH gel.Flyash and printing and dyeing sludge composition carry out pozzolanic reaction, significantly strengthen the mechanical resistance Compressive Strength of mud.Attapulgite has good characterization of adsorption, can reduce oozing out of metal in sludge, and compared with similar clays bentonite, attapulgite structure is chain, more stable relative to bentonitic laminate structure, and its surface-area and loading capacity are all higher than wilkinite.Calcium chloride add the concentration that can improve calcium in hydrated reaction of cement, promote hydration process and carry out to the process producing ettringite and CSH, shorten the hydration reaction time of cement.Each performs its own functions mutually promotes again for attapulgite, cement, flyash and calcium chloride, the sludge characteristics such as geotechnological performance, physical strength of solidification printing and dyeing sludge significantly improves, the leaching ability of pollutent also significantly reduces, and reaches the standard into the sanitary landfill of garbage loading embeading factory.By carrying out difference collocation to each component of solidifying agent, also can meet and to repair the roads or as the different actual demand such as greening material of construction.In addition, above-mentioned conventional additive cement, flyash and calcium chloride are cheap and easy to get, and attapulgite is also very abundant at the reserves of China, and curing agent component is simple, preparation cost is low, has good replicability and practicality.
Embodiment 2
First according to cement in the present embodiment: flyash: calcium chloride=obtained composite additive of 1:0:0 mixing, then according to printing and dyeing sludge: attapulgite: composite additive=0.433:0.133:0.433 is by mixing cured for each component.In 433g printing and dyeing sludge, add 133g attapulgite and 433g cement according to said ratio, mix.Load 24h in 70.7mm × 70.7mm × 70.7mm mould under room temperature shaping, after the demoulding, the unconfined compression strength of maintenance 28 days cured blocks reaches 3.0MPa.Meet Patel and deliver document Evaluation of physical stability and leachability of Portland Pozzolona Cement (PPC) solidified chemical sludge generated from textile wastewater treatment plants, the ultimate compression strength requirement to soil base, fragment of brick of repairing the roads in Journal of Hazardous Materials 207:56-64.XRD result display quartz and calcite are main component, similar with Fig. 1.Adopt sulfonitric method (HJ/T299-2007) to do Leaching test to cured block, wherein in leach liquor, the concentration of Cu and Pb is the concentration of 0.2741mg/L and 0.0775mg/L, COD is 573.32mg/L, and pollutent is solidified further.
Embodiment 3
A kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent of the present embodiment and curing thereof, basic with embodiment 1, its difference is: cement in the present embodiment: flyash: calcium chloride=6:0:0.18, printing and dyeing sludge: attapulgite: composite additive=0.1:0.05:0.3.
Embodiment 4
A kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent of the present embodiment and curing thereof, basic with embodiment 1, its difference is: the present embodiment is first according to cement: flyash: calcium chloride=obtained composite additive of 4:1:0.16 mixing, then according to printing and dyeing sludge: attapulgite: composite additive=0.24:0.11:0.7 is by mixing cured for each component, load 24h in 70.7mm × 70.7mm × 70.7mm mould under room temperature shaping, after the demoulding, maintenance obtains printing and dyeing sludge cured body in 12 days.
A kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent described in embodiment 1 ~ 4 and curing thereof, improve printing and dyeing mill to dispatch from the factory the geotechnological performance of mud, improve the physical strength of solidification sludge, reduce the leaching ability of pollutent, be convenient to sanitary landfill and the recycling of mud, and curing operation is simple, component is cheap and easy to get, solidification intensity can adapt to multiple situation, pollutent good fixing effect, has good replicability and practicality.
Schematically above be described the present invention and embodiment thereof, this description does not have restricted, and also just one of the embodiments of the present invention shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the frame mode similar to this technical scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.
Claims (8)
1. an attapulgite strengthening printing and dyeing sludge process disposal solidifying agent, it is characterized in that: comprise composite additive and attapulgite, described composite additive comprises cement, flyash and calcium chloride, and the mass ratio of cement, flyash and calcium chloride is (1 ~ 6): (0 ~ 5): (0 ~ 0.18); Described attapulgite and the mass ratio of composite additive are (0.05 ~ 0.3): (0.3 ~ 1.2).
2. a kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent according to claim 1, is characterized in that: the mass ratio (0.1 ~ 1) of printing and dyeing sludge, attapulgite and composite additive: (0.05 ~ 0.3): (0.3 ~ 1.2).
3. a kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent according to claim 2, it is characterized in that: in described composite additive, the mass ratio of cement, flyash and calcium chloride is 2:5:0.06, the mass ratio of described printing and dyeing sludge, attapulgite and composite additive is 1:0.2:0.706; Under this proportioning, printing and dyeing sludge cured body meets sanitary landfill standard.
4. a kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent according to claim 2, it is characterized in that: in described composite additive, the mass ratio of cement, flyash and calcium chloride is 1:0:0, the mass ratio of described printing and dyeing sludge, attapulgite and composite additive is 0.433:0.133:0.433; Under this proportioning, printing and dyeing sludge cured body meets European Union's building materials and to pave the way relevant criterion.
5. the process of attapulgite strengthening printing and dyeing sludge is disposed and is used a solidifying agent curing, the steps include:
(1) according to sludge characteristics and cured body whereabouts, the adding proportion of the ratio of each component contained by composite additive and composite additive, attapulgite is determined;
(2) by composite additive and attapulgite crushing grinding, 35 mesh sieves are crossed;
(3) determine ratio in step (1), printing and dyeing sludge, attapulgite, composite additive mixing are stirred evenly;
(4) layering of stirring product is loaded in mould, the demoulding after a day, room temperature maintenance 1 ~ 28 day.
6. a kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent curing according to claim 5, it is characterized in that: the obtained composite additive of ratio mixing according to cement, flyash and calcium chloride mass ratio being first 2:5:0.06, be the ratio mixing of 1:0.2:0.706 more in mass ratio by printing and dyeing sludge, attapulgite and composite additive, room temperature maintenance 1 day, the printing and dyeing sludge cured body prepared meets sanitary landfill standard.
7. a kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent curing according to claim 5, it is characterized in that: the obtained composite additive of ratio mixing according to cement, flyash and calcium chloride mass ratio being first 1:0:0, be the ratio mixing of 0.433:0.133:0.433 more in mass ratio by printing and dyeing sludge, attapulgite and composite additive, room temperature maintenance 28 days, the printing and dyeing sludge cured body prepared meets European Union's building materials and to pave the way relevant criterion.
8. a kind of attapulgite strengthening printing and dyeing sludge process disposal solidifying agent curing according to claim 6 or 7, it is characterized in that: step (3) adopts JJ-5 cement plaster blender, stirring intensity is first stirring at low speed 10 minutes, rear high-speed stirring 5 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410526438.3A CN104310884B (en) | 2014-10-08 | 2014-10-08 | Curing agent for attapulgite reinforced printing and dyeing sludge treatment and curing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410526438.3A CN104310884B (en) | 2014-10-08 | 2014-10-08 | Curing agent for attapulgite reinforced printing and dyeing sludge treatment and curing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104310884A true CN104310884A (en) | 2015-01-28 |
| CN104310884B CN104310884B (en) | 2017-02-08 |
Family
ID=52366235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410526438.3A Active CN104310884B (en) | 2014-10-08 | 2014-10-08 | Curing agent for attapulgite reinforced printing and dyeing sludge treatment and curing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104310884B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036589A (en) * | 2015-06-29 | 2015-11-11 | 合肥蓝科新材料有限公司 | Sludge curing agent for anti-freezing sludge brick |
| CN105174829A (en) * | 2015-06-29 | 2015-12-23 | 马鞍山金晟工业设计有限公司 | Good thermal insulation effect silt curing agent for silt bricks |
| CN105174883A (en) * | 2015-06-29 | 2015-12-23 | 马鞍山金晟工业设计有限公司 | Water-retention and waste-curing curing agent |
| CN105174896A (en) * | 2015-06-29 | 2015-12-23 | 马鞍山金晟工业设计有限公司 | Mud slurry curing agent |
| CN105672391A (en) * | 2016-01-13 | 2016-06-15 | 宁波瑞肯环保科技有限公司 | Method for firstly curing and then excavating sludge at bottoms of city inland rivers and lakes |
| CN106430867A (en) * | 2016-05-20 | 2017-02-22 | 武汉纺织大学 | Microwave photocatalysis integrated treatment method for printing and dyeing sludge |
| CN106517951A (en) * | 2016-11-11 | 2017-03-22 | 江苏东方生态清淤工程有限公司 | Baking-free bricks prepared through heavy-metal-polluted bottom mud |
| CN107381990A (en) * | 2017-08-30 | 2017-11-24 | 湖南军信环保股份有限公司 | A kind of method of sludge curing |
| CN111807654A (en) * | 2020-07-10 | 2020-10-23 | 滁州优禾环保科技有限公司 | Attapulgite clay-based sludge curing agent and preparation method thereof |
| CN114405458A (en) * | 2022-02-21 | 2022-04-29 | 常州大学 | Attapulgite/cement porous composite adsorption material and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4518508A (en) * | 1983-06-30 | 1985-05-21 | Solidtek Systems, Inc. | Method for treating wastes by solidification |
| US5098612A (en) * | 1988-12-10 | 1992-03-24 | Rowsell Farrell D | Method of preparing solidified and stabilized hazardous or radioactive liquids |
| CN101172749A (en) * | 2007-10-12 | 2008-05-07 | 河海大学 | Solidifying agent for solidifying and stabilizing treatment of generated dewatered sludge in sewage plant |
| CN102786340A (en) * | 2012-04-26 | 2012-11-21 | 江苏花海农业科技有限公司 | Method for producing nursery with characteristics of ecology and environmental protection by using lake sludge |
| CN103806567A (en) * | 2014-01-23 | 2014-05-21 | 许庆华 | Unfired sludge foaming acoustical board |
-
2014
- 2014-10-08 CN CN201410526438.3A patent/CN104310884B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4518508A (en) * | 1983-06-30 | 1985-05-21 | Solidtek Systems, Inc. | Method for treating wastes by solidification |
| US5098612A (en) * | 1988-12-10 | 1992-03-24 | Rowsell Farrell D | Method of preparing solidified and stabilized hazardous or radioactive liquids |
| CN101172749A (en) * | 2007-10-12 | 2008-05-07 | 河海大学 | Solidifying agent for solidifying and stabilizing treatment of generated dewatered sludge in sewage plant |
| CN102786340A (en) * | 2012-04-26 | 2012-11-21 | 江苏花海农业科技有限公司 | Method for producing nursery with characteristics of ecology and environmental protection by using lake sludge |
| CN103806567A (en) * | 2014-01-23 | 2014-05-21 | 许庆华 | Unfired sludge foaming acoustical board |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036589A (en) * | 2015-06-29 | 2015-11-11 | 合肥蓝科新材料有限公司 | Sludge curing agent for anti-freezing sludge brick |
| CN105174829A (en) * | 2015-06-29 | 2015-12-23 | 马鞍山金晟工业设计有限公司 | Good thermal insulation effect silt curing agent for silt bricks |
| CN105174883A (en) * | 2015-06-29 | 2015-12-23 | 马鞍山金晟工业设计有限公司 | Water-retention and waste-curing curing agent |
| CN105174896A (en) * | 2015-06-29 | 2015-12-23 | 马鞍山金晟工业设计有限公司 | Mud slurry curing agent |
| CN105672391A (en) * | 2016-01-13 | 2016-06-15 | 宁波瑞肯环保科技有限公司 | Method for firstly curing and then excavating sludge at bottoms of city inland rivers and lakes |
| CN106430867A (en) * | 2016-05-20 | 2017-02-22 | 武汉纺织大学 | Microwave photocatalysis integrated treatment method for printing and dyeing sludge |
| CN106517951A (en) * | 2016-11-11 | 2017-03-22 | 江苏东方生态清淤工程有限公司 | Baking-free bricks prepared through heavy-metal-polluted bottom mud |
| CN106517951B (en) * | 2016-11-11 | 2019-02-15 | 江苏东方生态清淤工程有限公司 | It is a kind of to utilize the non-burning brick of heavy metal polluted bed mud preparation |
| CN107381990A (en) * | 2017-08-30 | 2017-11-24 | 湖南军信环保股份有限公司 | A kind of method of sludge curing |
| CN111807654A (en) * | 2020-07-10 | 2020-10-23 | 滁州优禾环保科技有限公司 | Attapulgite clay-based sludge curing agent and preparation method thereof |
| CN114405458A (en) * | 2022-02-21 | 2022-04-29 | 常州大学 | Attapulgite/cement porous composite adsorption material and preparation method and application thereof |
| CN114405458B (en) * | 2022-02-21 | 2023-11-17 | 常州大学 | Attapulgite/cement porous composite adsorption material and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104310884B (en) | 2017-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104310884B (en) | Curing agent for attapulgite reinforced printing and dyeing sludge treatment and curing method thereof | |
| CN102276128B (en) | Treatment method of dehydrated sludge in domestic sewage treatment plant | |
| CN100488903C (en) | Treatment method for solidifying sludge of sewage plant in city | |
| CN102060480B (en) | Composite curing agent for dredged silt in watercourse | |
| CN101602567B (en) | Waste mud solidification processing method based on polypropylene acetamide | |
| CN101607812B (en) | Compound curing agent of high cement slurry | |
| CN107840623A (en) | A kind of discarded slurry making burn-free bricks and preparation method thereof | |
| CN101265070A (en) | Sludge solidifying agent and application thereof | |
| CN110627391B (en) | High-activity anhydrous phosphogypsum cementing material and preparation method thereof | |
| CN102093027B (en) | Sludge curing agent and method for curing sludge | |
| CN109053101B (en) | Modified sludge, preparation method thereof and construction method of modified sludge as soil covering material | |
| CN101885575A (en) | Solidification/stabilization treatment method for papermaking sludge | |
| CN102267796A (en) | Sludge curing agent for treating sludge in urban sewage treatment plant and sludge treatment method | |
| CN113149589A (en) | Soil body curing agent doped with sludge incineration ash and preparation method thereof | |
| CN101805161A (en) | Bonding agent of baking-free bricks prepared from drilling well solid waste materials | |
| CN107098653A (en) | A kind of environment-friendlyroad road face brick and preparation method thereof | |
| CN103319067A (en) | Environment-friendly type mud solidification method | |
| CN101037317A (en) | Powder coal ash expanding self-dense concrete for filling square steel pipe | |
| Du et al. | Recycling of electrolytic manganese solid waste in autoclaved bricks preparation in China | |
| CN101891367B (en) | Solidification and stabilization method of urban sludge | |
| CN103708705A (en) | Silt curing agent and production method thereof | |
| CN101007696A (en) | Sludge solidification and filling processing method | |
| CN101234882B (en) | Floor brick prepared from oil field sludge | |
| CN102503295A (en) | Non-sintered brick prepared from river and lake silt and preparation process thereof | |
| CN109293313A (en) | A kind of brick made of mud and its preparation process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |