CN104529396B - A kind of method utilizing domestic sludge brickmaking - Google Patents
A kind of method utilizing domestic sludge brickmaking Download PDFInfo
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- CN104529396B CN104529396B CN201510021940.3A CN201510021940A CN104529396B CN 104529396 B CN104529396 B CN 104529396B CN 201510021940 A CN201510021940 A CN 201510021940A CN 104529396 B CN104529396 B CN 104529396B
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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Abstract
The invention discloses a kind of method utilizing domestic sludge brickmaking, comprise in domestic sludge the stirring that adds water and make mud become fluidization, then add reodorant, properties-correcting agent, be stirred to and occur precipitation; It is 50 ~ 60% that precipitation adopts the mode of press filtration to carry out processed to water content, and get dewatered sludge 30 ~ 50 weight part, shale 50 ~ 70 weight part, is crushed to particle diameter 3 ~ 5mm after mixing, and stir to obtain mixed soil; Mixed soil adds the mud and water mixture that are not modified to shaping, and make its final water content be 25 ~ 35%, make adobe, send into tunnel furnace after drying, light to adobe spontaneous combustion, kiln temperature remains within the scope of 1000 ~ 1150 DEG C, makes finished bricks.The inventive method achieves waste reclaimation, production process energy-conserving and environment-protective, the every Testing index of product brick meets national standard.
Description
Technical field
The present invention relates to a kind of method utilizing domestic sludge to carry out brickmaking.
Background technology
Domestic sludge is the end product of city domestic sewage treating processes, and existing sewage disposal technology passes through metabolism and the physico-chemical process of microorganism, is transferred in a large number in mud by the pollutent in sewage, to reach the object purified water.The essence of water treatment is the phase transition of part pollutent, and while water quality is purified, great amount of soluble pollutent becomes soluble solid, is separated as mud, is generally rich in organism, germ etc., can say that mud is the pollutent be concentrated.
After domestic sludge is removed in water treatment plant, generally carry out burning, landfill or pile up, other is without this domestic sludge of way process.Adopt burying method not only to take a large amount of soil, and pollutent can be made finally to immerse underground, secondary pollution is caused to soil, underground water etc., unfavorable for environment; Although burn and can reach innoxious and resource utilization, present domestic overall technology level is low, also can form a large amount of smog, contaminate environment.
Domestic sludge complicated component, the aggregate that the zoogloea formed by multiple-microorganism and the organism of absorption thereof and inorganics form, except containing except large quantity of moisture, also contain the organism of difficult degradation, heavy metal and salt and a small amount of pathogenic micro-organism and parasitic ovum etc.
Present urban construction is accelerated, and building materials demand increases, and especially use building brick widely, current brick all adopts shale to fire, need to use a large amount of shale as making building materials and starting material.
In brickmaking process, the general a certain proportion of shale adopted, (or substitute with coal gangue, coal gangue caloic is low to add certain coal, cost is low), form coal, rock mixture, after making adobe, be put in brickkiln, light, the spontaneous combustion of adobe high temperature can be formed, become brick.The brick producing material such as shale, clay consumption in traditional brick-making method is large, causes the transition of resource to exploit, is unfavorable for Sustainable development.
Summary of the invention
Effectively cannot utilize and the problem of secondary pollution environment to solve the mud that in prior art, Sewage Plant process sanitary sewage produces, the invention provides a kind of method utilizing domestic sludge brickmaking.
This utilizes the method for domestic sludge brickmaking, and step is:
(1) stirring that adds water in domestic sludge makes mud become fluidization, then adds reodorant deodorizing, adds the modification of properties-correcting agent polyacrylamide, and polyacrylamide add-on is that every 1 kilogram of fluidised mud adds 40 ~ 45mg, is stirred to and occurs precipitation;
(2) precipitation adopts the mode of press filtration to carry out processed to water content is 50 ~ 60%, the mud that upper strata is not modified and water mixture for subsequent use;
(3) get mud 30 ~ 50 weight part after processed, shale 50 ~ 70 weight part, is crushed to particle diameter 3 ~ 5mm after mixing, and stir to obtain mixed soil;
(4) mixed soil adds mud and water mixture that step (2) is not modified to shaping, makes its final water content be 25% ~ 35%, obtains brick-making raw material;
(5) brick-making raw material makes adobe, sends into tunnel furnace after brick bat drying, and light to adobe spontaneous combustion, kiln temperature remains within the scope of 1000 ~ 1150 DEG C, makes finished bricks.
In Sewage Plant process sanitary sewage gained mud, organic content is higher, contain a large amount of microorganism in sewage simultaneously, constantly the organism in sewage is fermented and produces stench, in brickmaking process, need to add reodorant and carry out deodorizing process, brick-making method of the present invention does not have particular requirement, as long as can reach deodorizing object for the kind of reodorant and consumption.Before operating, need first to add water by sludge agitation to fluidization, be convenient to follow-up deodorizing and modification.
Modification is the committed step in brick-making method of the present invention, considers the many factors such as preparation efficiency and low cost, selects every 1 kilogram of fluidised mud to add 40 ~ 45mg polyacrylamide and carries out modification.Polyacrylamide, with positive group, can adsorb the suspended particles be scattered in solution, makes to produce crosslinked action between ion, has extremely strong modifying function, just can realize modification fast and form precipitation under low dose uses situation.In addition, its input amount needs to control in this scope of 40 ~ 45mg/kg fluidized mud, exceeds or deficiency, all can cause sludge modification deleterious.Modified precipitation adopts the mode of press filtration to carry out processed, and do not need vacuum or pressurized environment, effectively reduce production cost, the water deviate from becomes fluidized, recycle for nursing one's health domestic sludge next time again.
Due to domestic sludge complicated component, and less stable, therefore through modified, also some can not be flocculated into precipitation, water cannot be separated with mud, become starchiness, this part unmodified mud and water mixture, later for adjusting mixed soil water content, make whole production process realize maximum resource utilization.
Flammable organism is rich in mud, and content is roughly stabilized within the scope of one, the present invention utilizes himself flammable, when brickmaking without the need to adding other fuels, can saving heat energy greatly, but the number of mud add-on needs strictly to control, add the burning that too much can cause brick, too low, spontaneous combustion requirement can not be reached, dehydrated sludge water content control is in 50 ~ 60% scopes, when mixing with shale, its add-on should be strict controlled in 30 ~ 50%, this usage ratio scope can ensure that adobe volumetric shrinkage is at tolerance interval in sintering process, shrinking percentage can not be caused excessive and cause adobe in sintering process to produce the problems such as distortion and crackle, in addition, mud consumption after dehydration in 30 ~ 50% proportional ranges without the need to adding other compositions such as flyash again, satisfactory finished bricks can be prepared.Simultaneously, adobe feedstock particle size is also related to the dry mass of base substrate and burns till quality, in the present invention, mud and Shale Mixture are crushed to particle diameter 3 ~ 5mm, degree of compactness is even everywhere can to ensure shaping rear adobe, shrinking percentage is substantially the same, drying burns till rear each position changing conditions quite, not easily cracks.
Preferably, above-mentionedly utilize in the method for domestic sludge brickmaking, in step (1), the blending ratio of domestic sludge and water is 7:3, and now the mud denseness of fluidized is moderate, and deodorizing and modification are the most laborsaving all.
Preferably, above-mentionedly utilize in the method for domestic sludge brickmaking, step (4) mixed soil consumption accounts for 70 ~ 80%, and the mud be not modified and water mixture consumption account for 20 ~ 30%.
Preferably, above-mentionedly utilize in the method for domestic sludge brickmaking, the final water content of step (4) is 30%, and brick-making raw material plasticity is best, also makes adobe sintering character optimum, at utmost reduces the generation of brick body deformability and crackle.
Preferably, step (3) also adds the useless silicon mud of 5 ~ 10 weight parts.In solar cell and semiconductor crystal wafer preparation process, can by slicing silicon ingots, the slurry comprising silicon carbide is used in slicing processes, can produce the abrasive property comprising silicon, silicon carbide and other oxide compounds aborning to give up silicon mud, these wastes effectively cannot process recycling usually.And find through research, in the mixture of dewatered sludge and shale, add a little useless silicon mud, can significantly improve the ultimate compression strength of finished bricks, the recycling for useless silicon mud provides a new way.
The above-mentioned sludge brick utilizing the method for domestic sludge brickmaking to prepare is also within protection scope of the present invention.
Compared with prior art, the present invention has following beneficial effect:
The mud that the present invention only produces with the sanitary sewage of Sewage Plant process and shale prepare finished bricks for raw material, achieve waste reclaimation, mud is in brickmaking process, internal combustion can be provided for vitrified brick, reduce energy loss, bacteriums all in mud, organic pollutant are comprised Dioxins etc. and all decompose by the high temperature of 1000 ~ 1150 DEG C, can not discharge harmful.Organic constituent in mud is oxidizing fire in the roasting process of brick, saves fuel on the one hand, also consumes mud on the other hand, leaves a large amount of pore, brick porosity is raised, improves the heat preservation and insulation of brick.
Embodiment
Explain the present invention further below in conjunction with specific embodiment, implemented better to enable those skilled in the art.
Embodiment:
Certain sewage work of city mainly processes the sanitary sewage in this urban district, and the mud of generation is frowziness, and brown or partially black, density is greater than the soft solid of water.Shale is commercially available prod.Useless silicon mud from
Mud is utilized to carry out the step of brickmaking as follows:
(1) stirring that adds water in domestic sludge makes mud become fluidization, the usage ratio of mud and water is 7:3(quality), then add reodorant deodorizing, add properties-correcting agent polyacrylamide, add-on is that every 1 kilogram of fluidised mud adds 40 ~ 45mg polyacrylamide, is stirred to and occurs precipitation;
(2) precipitation adopts the mode of press filtration to carry out processed to water content is 50 ~ 60%, the mud that upper strata is not modified and water mixture for subsequent use;
(3) get the mud 30 ~ 50% after processed, shale 50 ~ 70%, be crushed to particle diameter 3 ~ 5mm after mixing, stir to obtain mixed soil;
(4) mixed soil adds mud and water mixture that step (2) is not modified to shaping, makes its final water content be 25% ~ 35%, obtains brick-making raw material;
(5) brick-making raw material makes adobe, sends into tunnel furnace after brick bat drying, and light to adobe spontaneous combustion, kiln temperature remains within the scope of 1000 ~ 1150 DEG C, makes finished bricks.
Enumerate 4 embodiments respectively by above-mentioned steps and carry out sludge brick preparation, in embodiment, each parameter is in table 1.
Table 1
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Properties-correcting agent add-on (mg/kg fluidization mud) | 40 | 45 | 40 | 42 |
| Dewatered sludge: shale: silicon mud consumption (kg) | 50:50:0 | 40:60:0 | 30:70:0 | 30:60:10 |
| Mixed soil particle diameter (mm) | 3 | 5 | 4 | 3 |
| Brick-making raw material water content | 35% | 25% | 30% | 30% |
| Kiln temperature | 1050℃ | 1000℃ | 1100℃ | 1150℃ |
With reference to the requirement in national standard " fired common brick " (GB5101-1998), the product of above-described embodiment 1 ~ 4 has been carried out to the detection of the many indexs such as visual appearance, scum, lime blowing, ultimate compression strength, density, detected result is in table 2.
Table 2
After testing, the above-mentioned performance of the finished bricks of embodiment 1 ~ 4 all complies with the national standard requirements.
Above-described embodiment is only for the invention example is clearly described, and the restriction not to the invention embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among the protection domain of the invention claim.
Claims (2)
1. utilize a method for domestic sludge brickmaking, it is characterized in that, step is:
(1) stirring that adds water in domestic sludge makes mud become fluidization, the blending ratio of domestic sludge and water is 7:3, then adds reodorant deodorizing, adds the modification of properties-correcting agent polyacrylamide, polyacrylamide add-on is that every 1 kilogram of fluidised mud adds 42mg, is stirred to and occurs precipitation;
(2) precipitation adopts the mode of press filtration to carry out processed to water content is 50 ~ 60%, the mud that upper strata is not modified and water mixture for subsequent use;
(3) get mud 30 weight part after processed, shale 60 weight part, also add useless silicon mud 10 weight part, be crushed to particle diameter 3mm after mixing, stir to obtain mixed soil;
(4) mixed soil adds mud and water mixture that step (2) is not modified to shaping, and mixed soil consumption accounts for 70 ~ 80%, and the mud be not modified and water mixture consumption account for 20 ~ 30%, makes its final water content be 30%, obtains brick-making raw material;
(5) brick-making raw material makes adobe, sends into tunnel furnace after brick bat drying, and light to adobe spontaneous combustion, kiln temperature remains within the scope of 1150 DEG C, makes finished bricks.
2. the sludge brick utilizing the method for domestic sludge brickmaking to prepare according to claim 1.
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| CN201510021940.3A CN104529396B (en) | 2015-01-16 | 2015-01-16 | A kind of method utilizing domestic sludge brickmaking |
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| CN201510021940.3A CN104529396B (en) | 2015-01-16 | 2015-01-16 | A kind of method utilizing domestic sludge brickmaking |
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| CN104529396B true CN104529396B (en) | 2015-09-30 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107266080A (en) * | 2017-07-03 | 2017-10-20 | 常州赛蓝光伏技术有限公司 | Non-burning brick method is made using useless silicon mud |
| CN109293340A (en) * | 2018-09-21 | 2019-02-01 | 江苏腾业新型材料有限公司 | A kind of making brick from sludge method using biological deodorizing technology |
| CN110668788A (en) * | 2019-10-17 | 2020-01-10 | 湖北玉鑫新型墙材有限公司 | Method for making bricks by using sludge wastewater |
| CN111138052A (en) * | 2020-01-22 | 2020-05-12 | 湖南鎏盛环保科技发展有限公司 | Medical sludge treatment method |
| CN113912381A (en) * | 2021-09-14 | 2022-01-11 | 广东省福日升绿色科技研究有限公司 | Building sludge comprehensive brick making process and brick |
| CN113912380A (en) * | 2021-09-14 | 2022-01-11 | 广东省福日升绿色科技研究有限公司 | Comprehensive domestic sludge making and transferring process |
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| CN1194931C (en) * | 2002-09-23 | 2005-03-30 | 应国庆 | Production method of sludge baked brick |
| CN100478297C (en) * | 2006-05-16 | 2009-04-15 | 刘仁富 | Method for producing bricks from urban domestic sludge |
| CN101570429A (en) * | 2008-04-30 | 2009-11-04 | 王明根 | Processing method for making bricks by using municipal domestic sludge |
| CN102211921A (en) * | 2011-03-21 | 2011-10-12 | 邹汉成 | Brick making method using sludge as raw material |
| CN102358694A (en) * | 2011-07-26 | 2012-02-22 | 赵德智 | Sintering method of lightweight energy saving building brick |
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