CN103539426A - Method of preparing ceramsite by utilizing municipal sewage plant sludge and waste glass - Google Patents

Method of preparing ceramsite by utilizing municipal sewage plant sludge and waste glass Download PDF

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Publication number
CN103539426A
CN103539426A CN201310459419.9A CN201310459419A CN103539426A CN 103539426 A CN103539426 A CN 103539426A CN 201310459419 A CN201310459419 A CN 201310459419A CN 103539426 A CN103539426 A CN 103539426A
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China
Prior art keywords
glass
cullet
haydite
domestic sewage
mud
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CN201310459419.9A
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Chinese (zh)
Inventor
吴彦瑜
彭晓春
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环境保护部华南环境科学研究所
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Priority to CN201310459419.9A priority Critical patent/CN103539426A/en
Publication of CN103539426A publication Critical patent/CN103539426A/en

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Abstract

The invention relates to a method of preparing ceramsite by utilizing municipal sewage plant sludge and waste glass, belonging to the technical field of solid waste treatment and disposal and recycling. The method comprises the following steps: crushing dehydrated sludge with moisture content of 75%-85%, crushing and ball-milling the waste glass into 200 meshes, and mixing and adding according to a certain proportion; adding 1%-5% of a foaming agent; extruding and pelletizing after stirring, and conveying to a ceramsite rotary kiln for firing through a conveyor. The excellent glass ceramsite fired by the method disclosed by the invention has a compact glaze surface, light weight and high strength, satisfies national standard GB/T17431.2-2010, and mechanical performance and harmful substance content inspection results of the ceramsite satisfies the requirements of the national standard; the obtained glass ceramsite can be used in projects such as houses, road surfaces and bridges. The method disclosed by the invention changes waste into things of value and protects the environment, not only satisfies sustainable development direction of the ecological building material industry, but also is an effective way of recycling the sludge from municipal sewage plants.

Description

A kind of method of utilizing municipal sewage sludge and cullet to prepare haydite
Technical field
The present invention relates to municipal solid wastes disposal and resource technology field, be specifically related to utilize municipal sewage sludge and cullet to prepare the method for haydite.
Background technology
The processing of municipal sludge is the serious and urgent problem that the current whole world faces, mud mainly comprises and makes source quality deterioration, contaminated soil and farm crop etc. the harm of environment, wherein heavy metal is the large reason polluting, traditional technological method is that mud is carried out to landfill and burning, and this all can cause secondary pollution to environment.At present, sludge treatment disposal technology mainly contains landfill, burning, building materials processed and compost etc.Haydite is a kind of light weight and has gathering materials of some strength, is mainly to adopt high temperature to burn to form.The research of sludge ceramsite at present mainly concentrates on mud as the organics additive in ceramsite sintering, and its usage quantity is few, only has 10% left and right, can not reach the object of extensive processing disposing sludge.If admixture is than higher than 10%, due to water and organic release, product expression is porous, loose structure, the requirement that does not reach building standard.Improve mud admixture than being the current subject matter that needs solution.
Glass haydite be take various glassworks broken or pollute after lose use value cullet be raw material, through levigate batching balling-up and burn till and the artificial light aggregate that obtains.Na in glass 2o and K 2o content is high, and melt temperature is low, and the whipping agent mixing thermolysis in sintering process produces gas, makes it form vesicular structure, thus the lightweight of obtaining, low-density product.The high-rise frame structure building of China's fast development, not only require materials for wall high-strength light, the requirement of high-strength light the skeleton construction of load-bearing has also been proposed simultaneously, and cullet haydite is as a kind of aggregate of high-strength light, the needs that just meeting modern architecture industry, it replaces stone as the aggregate in concrete, has alleviated 30% of fabric structure weight, improved the economic and technical norms of other side, and significant for the shock resistance that improves buildings.
Summary of the invention
The object of this invention is to provide a kind of method of utilizing municipal sewage sludge and cullet to prepare haydite, guaranteeing under the prerequisite of the light bone building materials of haydite performance, take mud and scrap glass as raw material, realize the co-treatment utilization of municipal sewage sludge and scrap glass, this method cost is low, treatment effect is stable, and product in use can not cause secondary pollution to environment.
Object of the present invention can realize by following scheme:
Utilize city domestic sewage factory mud and cullet to prepare a method for glass haydite, it comprises the steps:
(1) by crossing 200 mesh sieves after discarded glass breaking, ball milling, obtain the cullet powder after broken ball milling;
(2) the cullet Fen He city domestic sewage factory mud after broken ball milling is mixed, obtain mixture, add the whipping agent of mixture quality 1% ~ 5%, after stirring, form admixtion;
(3) admixtion is dropped into nodulizer granulation, extruding preparation, the pellet of 0.5 ~ 1cm particle diameter, puts into rotary kiln, according to following technological process sintering:
Pre-heating stage: the temperature rise rate with 3 ~ 6 ℃/min is raised to 340 ~ 360 ℃ from room temperature, and stops at 340 ~ 360 ℃ 15 ~ 25 minutes;
Temperature rise period: with 5 ~ 10 ℃/min, be warmed up to 1050~1100 ℃, and roasting 25 ~ 35 minutes under 1050~1100 ℃ of conditions;
The insulation annealing stage: naturally cool to room temperature with furnace temperature, obtain glass haydite.
Further, the cullet described in step (1) is common dull and stereotyped glass cullet and container glass, comprises white glass and brown glass.
Further, the described cullet powder add-on after broken ball milling accounts for 5% ~ 90% of described mixture massfraction; Described city domestic sewage factory mud add-on accounts for 10% ~ 95% of mixture massfraction.
Further, the described whipping agent of step (2) is Wingdale, and the described extruding preparation of step (3) refers to that extruding is prepared into the pellet of 0.8 ~ 1.2cm particle diameter.
Further, described sintering process is:
Pre-heating stage: the temperature rise rate with 3 ~ 6 ℃/min is raised to 350 ℃ from room temperature, and stops at 350 ℃ 20 minutes;
Temperature rise period: with 5 ~ 10 ℃/min, be warmed up to 1050~1100 ℃, and roasting 30 minutes under 1050~1100 ℃ of conditions;
The insulation annealing stage: naturally cool to room temperature with furnace temperature, obtain glass haydite.
Glass ceramic product of the present invention is greyish white inclined to one side light green, and there is the microvoid structure of sealing inside, and there are the enamel of one deck densification, high-strength light in surface.Meet the requirement of GB GB/T17431.2-2010 light skeletal haydite completely.
With respect to prior art, tool of the present invention has the following advantages:
The invention provides a kind of method of utilizing municipal sewage sludge and cullet to prepare haydite, realized the target that municipal sludge and scrap glass common resourceization are disposed.The preparation technology parameter particularly drawing by further research, these parameters Non-traditional Techniques, they have played crucial effect for realization of the present invention together, make the glass haydite inside that the present invention prepares be full of countless small pores, easily processing, indeformable, stable performance, can be widely used in the fields such as petrochemical complex, light industry, refrigeration, building, bridge, underground works, have a extensive future.Its Leaching of product glass haydite is well below national standard, environmental stability and the security of municipal sludge have greatly been improved, and the method place technique is simple, added value is high, can effectively process scrap glass simultaneously, product in use can not cause secondary pollution to environment, is a kind of method that effective waste resourceization is utilized.
Accompanying drawing explanation
Fig. 1 is sintering process schematic diagram of the present invention.
Fig. 2 is the prepared glass haydite of embodiment internal pore structure scanning electron microscope (SEM) photograph.
Embodiment
The invention will be further described by the following examples.But the scope of protection of present invention scope that limitation does not represent in embodiment.
Guangdong sewage work of the provinces and cities mechanical dehydration mud of take is example.This sewage work, mainly for city domestic sewage, adopts traditional A2O technique, and the mixing sludge of preliminary sedimentation tank and second pond obtains dewatered sludge after gravity concentration and mechanical dehydration.Moisture percentage in sewage sludge is 81.5%, and its fundamental characteristics is in Table 1:
As shown in Table 1, because mud is without digestion process, mud organic substance content is higher, and mud butt calorific value reaches the calorific value of low grade coal, is applicable to carrying out thermal treatment.Meanwhile, because sewage work is mainly sanitary sewage, so heavy metal content is lower, and except total Zn content is slightly high, all the other content are all very low.
Table 1 mud sample essential property (mg/L)
Embodiment 1:
A, cullet (container glass) powder that is 80 by mass fraction, broken, grinding, cross 200 mesh sieves, under room temperature, with 20 r/min rotating speeds, add while stirring the mud of 100 parts of quality group marks, and add 5 parts, whipping agent Wingdale, continuously stirring is mixed, and forms uniform mud+glass powdery admixtion.
B, the admixtion that A is formed drop into nodulizer extruder grain, make 1cm particle diameter bead, put into rotary kiln.
C, control roasting heat-up rate are 5 ℃/min, are warming up to 350 ℃, at 350 ℃ of preheating 20min, then take heat-up rate as 5 ℃/min, are warming up to 1100 ℃, and at this roasting temperature 30min.
D, employing naturally cooling, make fire box temperature naturally be down to room temperature, obtains glass haydite.
Embodiment 2:
A, cullet (dull and stereotyped glass cullet) powder that is 70 by quality group mark, broken, grinding, cross 200 mesh sieves, under room temperature, with 30 r/min rotating speeds, add while stirring the mud of 100 parts of quality group marks, and add 3 parts, whipping agent Wingdale, continuously stirring is mixed, and forms uniform mud+glass powdery admixtion.
B, the admixtion extruder grain that A is formed, make 0.5cm particle diameter bead, puts into rotary kiln.
C, control roasting heat-up rate are 3 ℃/min, are warming up to 355 ℃, at 355 ℃ of preheating 23min, then take heat-up rate as 5 ℃/min, are warming up to 1000 ℃, and at this roasting temperature 30min.
D, employing naturally cooling, make fire box temperature naturally be down to room temperature, obtains glass haydite.
Embodiment 3:
A, cullet (dull and stereotyped glass cullet and the container glass) powder that is 100 by quality group mark, broken, grinding, cross 200 mesh sieves, under room temperature, with 25r/min rotating speed, add while stirring the mud of 100 parts of quality group marks, and add 5 parts, whipping agent Wingdale, continuously stirring is mixed, and forms uniform mud+glass powdery admixtion.
B, the admixtion extruder grain that A is formed, make 1cm bead, puts into rotary kiln.
C, control roasting heat-up rate are 5 ℃/min, are warming up to 350 ℃, at 350 ℃ of preheating 20min, then take heat-up rate as 5 ℃/min, are warming up to 1050 ℃, and at 1050 ℃ of roasting 30min.
D, employing naturally cooling, make fire box temperature naturally be down to room temperature, obtains glass haydite.
Embodiment 4:
A, cullet (dull and stereotyped glass cullet and the container glass) powder that is 90 by quality group mark, broken, grinding, cross 200 mesh sieves, under room temperature, with 20 r/min rotating speeds, add while stirring the mud of 100 parts of quality group marks, and add 2.5 parts, whipping agent Wingdale, continuously stirring is mixed, and forms uniform mud+glass powdery admixtion.
B, the admixtion extruder grain that A is formed, make 0.6cm bead, puts into rotary kiln.
C, control roasting heat-up rate are 5 ℃/min, are warming up to 350 ℃, at 350 ℃ of preheating 20min, then take heat-up rate as 5 ℃/min, are warming up to 950 ℃, at 950 ℃ of roasting 30min.
D, employing naturally cooling, make fire box temperature naturally be down to room temperature, obtains glass haydite.
Below be only some examples of preparing of the present invention, as shown in Figure 2, the performance test results of its product is in Table 2 for glass haydite (as example 1) the internal pore structure scanning electron microscope (SEM) photograph that employing the inventive method makes:
Table 2 glass haydite the performance test results
Of Heavy Metal Level In Sludge itself is just very low, through roasting and vitreum clinkering, is solidified more fully.According to China < < Hazardous wastes judging standard leaching characteristic identification > > (GB5085.3-2007), glass haydite to preparation carries out leaching toxicity test by the < < solid waste Leaching horizontal succusion > > of leaching method (HJ557-2009), Zn, Pb, Cd, the leach liquor standard that the leaching concentration of Cr is all stipulated well below < < Hazardous wastes judging standard leaching characteristic identification > > (GB5085.3-2007), also meet the requirement of surface water III class water quality standard simultaneously, illustrate that glass haydite is fine to the fixed effect of heavy metal, meet recycling condition.In addition, glass haydite, in actual use also will be mixing cured with cement, pitch etc. as roadbed material and building aggregate, will further improve the solidification effect of heavy metal.
Above-mentioned the performance test results shows, the pollutent indexs such as the physical strength of glass haydite and heavy metal all meet the requirement of building light skeletal, whole process waste discharge and waste gas meet relevant laws and regulations requirement, and the technology of the present invention method has realized the object of efficient resource utilization of the present invention.

Claims (6)

1. utilize city domestic sewage factory mud and cullet to prepare a method for glass haydite, it is characterized in that comprising the steps:
(1) by crossing 200 mesh sieves after discarded glass breaking, ball milling, obtain the cullet powder after broken ball milling;
(2) the cullet Fen He city domestic sewage factory mud after broken ball milling is mixed, obtain mixture, add the whipping agent of mixture quality 1% ~ 5%, after stirring, form admixtion;
(3) admixtion is dropped into nodulizer granulation, extruding preparation, the pellet of 0.5 ~ 1cm particle diameter, puts into rotary kiln, according to following technological process sintering:
Pre-heating stage: the temperature rise rate with 3 ~ 6 ℃/min is raised to 340 ~ 360 ℃ from room temperature, and stops at 340 ~ 360 ℃ 15 ~ 25 minutes;
Temperature rise period: with 5 ~ 10 ℃/min, be warmed up to 1050~1100 ℃, and roasting 25 ~ 35 minutes under 1050~1100 ℃ of conditions;
The insulation annealing stage: naturally cool to room temperature with furnace temperature, obtain glass haydite.
2. a kind of method of utilizing city domestic sewage factory mud and cullet to prepare glass haydite according to claim 1, is characterized in that: the cullet described in step (1) is dull and stereotyped glass cullet and container glass, comprises white glass and brown glass.
3. a kind of method of utilizing city domestic sewage factory mud and cullet to prepare glass haydite according to claim 1, is characterized in that: the described cullet powder add-on after broken ball milling accounts for 5% ~ 90% of described mixture massfraction; Described city domestic sewage factory mud add-on accounts for 10% ~ 95% of mixture massfraction.
4. a kind of method of utilizing city domestic sewage factory mud and cullet to prepare glass haydite according to claim 1, is characterized in that: the described whipping agent of step (2) is Wingdale.
5. a kind of method of utilizing city domestic sewage factory mud and cullet to prepare glass haydite according to claim 1, is characterized in that: described city domestic sewage factory's mud water ratio after dehydration is 75%-85%.
6. a kind of method of utilizing city domestic sewage factory mud and cullet to prepare glass haydite according to claim 1, is characterized in that: the described sintering process of step (3) is:
Pre-heating stage: the temperature rise rate with 3 ~ 6 ℃/min is raised to 350 ℃ from room temperature, and stops at 350 ℃ 20 minutes;
Temperature rise period: with 5 ~ 10 ℃/min, be warmed up to 1050~1100 ℃, and roasting 30 minutes under 1050~1100 ℃ of conditions;
The insulation annealing stage: naturally cool to room temperature with furnace temperature, obtain glass haydite.
CN201310459419.9A 2013-09-30 2013-09-30 Method of preparing ceramsite by utilizing municipal sewage plant sludge and waste glass CN103539426A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104030719A (en) * 2014-06-21 2014-09-10 吕剑明 Method for producing ceramsite by using sludge
CN104310960A (en) * 2014-10-08 2015-01-28 严亮 Ceramsite prepared by utilizing building garbage and waste glass and preparation method of ceramsite
CN105036707A (en) * 2015-07-23 2015-11-11 厦门大学 Method for preparing building ceramisites by means of household garbage incineration bottom ash
CN105174915A (en) * 2015-08-20 2015-12-23 包头市正唐环保产业有限公司 Technology utilizing waste solids to prepare ceramic particles used as soilless culture substrates
CN105601312A (en) * 2014-11-24 2016-05-25 天和自动化科技(苏州)股份有限公司 Porous environment-friendly material
CN105601060A (en) * 2014-11-24 2016-05-25 天和自动化科技(苏州)股份有限公司 Process method for refining sand by recycling sludge
CN106145623A (en) * 2016-06-24 2016-11-23 佛山市保路威环保材料有限公司 The application of discarded glass and anti-skid surface colour strengthening glass aggregate preparation method
CN107138504A (en) * 2017-05-18 2017-09-08 聂超 A kind of porous environmental friendly material
CN107473710A (en) * 2017-09-05 2017-12-15 常州大学 A kind of electroplating sludge that blends prepares the method that clay brick process improves heavy metals immobilization effect
CN108275917A (en) * 2017-01-06 2018-07-13 上海同济建设工程质量检测站 Asphalt containing environment-friendly type regeneration glass sand
CN108585396A (en) * 2018-05-29 2018-09-28 张家港市永兴建材厂 The processing of solid waste sludge and method is utilized in a kind of factory to lithium battery
CN109279902A (en) * 2018-09-11 2019-01-29 武汉理工大学 A method of regulation sludge ceramsite expansion multiple
CN109305822A (en) * 2017-11-16 2019-02-05 中国石油化工股份有限公司 The expanded ceramsite and preparation method being prepared using spent bleaching clay
CN109516772A (en) * 2018-12-20 2019-03-26 华东交通大学 A kind of high-strength light cullet haydite and preparation method thereof
CN109678462A (en) * 2018-12-29 2019-04-26 武汉理工大学 A kind of Ultralight mud ceramic granules and preparation method thereof

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CN101215150A (en) * 2008-01-18 2008-07-09 北京工业大学 Method for burning haydite by solid castoff
CN101406777A (en) * 2008-11-10 2009-04-15 河南工业大学 Porous porcelain granule filter material based on glass and sludge, and preparation method thereof
CN102643109A (en) * 2012-04-27 2012-08-22 环境保护部华南环境科学研究所 Method for preparing ceramsite by using waste incineration fly ash and waste glass
WO2013093509A2 (en) * 2011-12-24 2013-06-27 Michael Evans Aggregates

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Publication number Priority date Publication date Assignee Title
CN1442378A (en) * 2002-03-04 2003-09-17 天津市市政工程研究院 Sewage treatment plant sludge harmless sintering treatment method
CN101215150A (en) * 2008-01-18 2008-07-09 北京工业大学 Method for burning haydite by solid castoff
CN101406777A (en) * 2008-11-10 2009-04-15 河南工业大学 Porous porcelain granule filter material based on glass and sludge, and preparation method thereof
WO2013093509A2 (en) * 2011-12-24 2013-06-27 Michael Evans Aggregates
CN102643109A (en) * 2012-04-27 2012-08-22 环境保护部华南环境科学研究所 Method for preparing ceramsite by using waste incineration fly ash and waste glass

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104030719A (en) * 2014-06-21 2014-09-10 吕剑明 Method for producing ceramsite by using sludge
CN104310960A (en) * 2014-10-08 2015-01-28 严亮 Ceramsite prepared by utilizing building garbage and waste glass and preparation method of ceramsite
CN104310960B (en) * 2014-10-08 2016-01-20 严亮 A kind of haydite utilizing building waste and cullet to prepare and preparation method thereof
CN105601060A (en) * 2014-11-24 2016-05-25 天和自动化科技(苏州)股份有限公司 Process method for refining sand by recycling sludge
CN105601312A (en) * 2014-11-24 2016-05-25 天和自动化科技(苏州)股份有限公司 Porous environment-friendly material
CN105036707A (en) * 2015-07-23 2015-11-11 厦门大学 Method for preparing building ceramisites by means of household garbage incineration bottom ash
CN105036707B (en) * 2015-07-23 2017-09-15 厦门大学 The method that consumer waste incineration bottom ash prepares building porcelain granule
CN105174915A (en) * 2015-08-20 2015-12-23 包头市正唐环保产业有限公司 Technology utilizing waste solids to prepare ceramic particles used as soilless culture substrates
CN106145623A (en) * 2016-06-24 2016-11-23 佛山市保路威环保材料有限公司 The application of discarded glass and anti-skid surface colour strengthening glass aggregate preparation method
CN108275917A (en) * 2017-01-06 2018-07-13 上海同济建设工程质量检测站 Asphalt containing environment-friendly type regeneration glass sand
CN108275917B (en) * 2017-01-06 2021-03-30 上海同济建设工程质量检测站 Asphalt mixture containing environment-friendly recycled glass sand
CN107138504A (en) * 2017-05-18 2017-09-08 聂超 A kind of porous environmental friendly material
CN107473710A (en) * 2017-09-05 2017-12-15 常州大学 A kind of electroplating sludge that blends prepares the method that clay brick process improves heavy metals immobilization effect
CN109305822A (en) * 2017-11-16 2019-02-05 中国石油化工股份有限公司 The expanded ceramsite and preparation method being prepared using spent bleaching clay
CN108585396A (en) * 2018-05-29 2018-09-28 张家港市永兴建材厂 The processing of solid waste sludge and method is utilized in a kind of factory to lithium battery
CN109279902A (en) * 2018-09-11 2019-01-29 武汉理工大学 A method of regulation sludge ceramsite expansion multiple
CN109516772A (en) * 2018-12-20 2019-03-26 华东交通大学 A kind of high-strength light cullet haydite and preparation method thereof
CN109516772B (en) * 2018-12-20 2019-12-31 华东交通大学 Light high-strength waste glass ceramsite and preparation method thereof
CN109678462A (en) * 2018-12-29 2019-04-26 武汉理工大学 A kind of Ultralight mud ceramic granules and preparation method thereof

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Application publication date: 20140129