CN102390913A - Biodegradation-based sludge brick-making technology - Google Patents
Biodegradation-based sludge brick-making technology Download PDFInfo
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- CN102390913A CN102390913A CN2011102326914A CN201110232691A CN102390913A CN 102390913 A CN102390913 A CN 102390913A CN 2011102326914 A CN2011102326914 A CN 2011102326914A CN 201110232691 A CN201110232691 A CN 201110232691A CN 102390913 A CN102390913 A CN 102390913A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention relates to a biodegradation-based sludge brick-making technology. Compared with a traditional technology, the biodegradation-based sludge brick-making technology is characterized in that a step of anaerobic treatment is added. Fermentation is carried out and then filter-pressing dehydration treatment is performed, so that the content of organic matters in sludge is reduced to below 10% and the content of water is reduced to 20%-30%, thereby obtaining brick-making sludge suitable for being added to a brick-making material, such as shale and the like. According to the traditional technology, the filter-pressing dehydration treatment is directly performed, so that the content of water in the sludge is only reduced to about 80% and the content of organic volatile matters is above 20%. Generally, the total added weight of the sludge, which contains 80% of water and more than 20% of organic matters and is added for making a brick, is only 30% of the weight of the brick-making material. In the brick-making sludge which is suitable for being added to the brick-making material and is obtained according to the biodegradation-based sludge brick-making technology, the content of organic matters is reduced to below 10% and the content of water is reduced to 20%-30%, and the total added weight of the sludge used for making the brick can be 40%-60% of the weight of the brick-making material, thereby saving raw materials, lowering cost and greatly promoting the capacity for treating the sludge.
Description
Technical field
The present invention is the ME that relates to a kind of brickmaking mud, is specifically related to the biodegradable making brick from sludge technology of a kind of employing.
Background technology
Promptly contain the organic matter of the certain thermal value of tool in municipal sewage plant's sludge discharged, also contain other harmful substances.Wherein biological content is high and very unstable, contains more germ and parasite, if mishandlingly will cause secondary pollution.The optimum treatment mode of mud is a resource utilization, and making brick from sludge is exactly the best mode of utilizing.
Mud makes sewage sludge harmlessness as making the sintered article raw material when the high-temperature roasting, has prevented secondary pollution.Make in the sintered article process, the organic matter that has certain thermal value in the mud has replenished the heat of high-temperature roasting again, has reduced the consumption of the energy.Therefore; Utilize the discharging mud and other raw materials mix of municipal sewage plant, produce the sintered building material product, utilize and digested the discharging mud of a large amount of municipal sewage plants first; The heat of the heat supplement high-temperature roasting sintered article that second organic self burning produces in the discharging mud of sewage work; Both utilized the calorific value of mud self, again can pyrolytic decomposition poisonous and harmful and carcinogenic substance, solved the secondary pollution problem of municipal sludge.This be realize at present that municipal sludge is innoxious, the optimal path of resource utilization and industrialization.
Utilizing municipal sewage plant's sludge discharged to produce the primary problem that solves of sintered building material product is that mud is as the processing of making the sintered article raw material.In making brick from sludge technology, organic volatile component should be less than 10% in the brick-making raw material, and in the mud organic volatile component greater than 20%.The increase of high volatilization organic content can cause the intensity of goods to be the cubicity reduction, and high-load high volatilization organic matter can have a strong impact on product strength.And water-absorbent organic in the mud is extremely strong, directly still contains large quantity of moisture in the mud after the press filtration oven dry, has had a strong impact on the performance of its brickmaking, limits it as ratio that raw material added.
Summary of the invention
The object of the present invention is to provide the biodegradable making brick from sludge technology of a kind of employing; This technology focuses on that mud is as the treating processes of making the sintered article raw material; Reach the standard of low organic content and low water content after treatment as the sintered article raw material, increase the adding proportion of mud as brick-making raw material.
For achieving the above object, technical scheme of the present invention is: adopt biodegradable making brick from sludge technology, may further comprise the steps:
The first step, the bio anaerobic processing will contain the organic mud of 20%～80% high volatilization and put into fermentation vat and ferment, 30～40 ℃ of leavening temperatures, fermentation time 7～10 days obtains organic content in the fermented sludge below 10%;
In second step, drying and other treatment with the fermented sludge filter-press dehydration, obtains water cut and is 20%～30% dewatered sludge;
The 3rd step mixed, and brick-making raw materials such as dewatered sludge and shale is mixed to grind practice homogenizing, sent into the ageing of ageing storehouse again, and wherein the weight of dewatered sludge accounts for 40%～60% of gross weight;
In the 4th step, the moulding clip adds the brick producing material after the ageing in the 3rd step in the vacuum extruder to, and extrusion moulding obtains wet adobe;
The 5th step, drying, kiln car on the adobe sign indicating number that will wet gets into dry kiln, utilizes in the roasting kiln waste heat in 100～150 ℃ hot blast dry 23～25 hours;
In the 6th step, roasting is sent dried brick body of the 5th step to roasting kiln, and maturing temperature is 1000～1100 ℃, and roasting time obtained sintered article in 24～32 hours.
When adopting technique scheme, with respect to traditional brickmaking sludge treatment technique, key distinction point of the present invention is to have added the anaerobism processed steps.Owing to contain great number of organic matters in the mud, the increase of organic content can cause the intensity of goods to be cubicity reducing, and organicly has the characteristic of suction, directly mud is carried out press filtration and mummification is difficult to reduce its water cut.Therefore; Before the drying and other treatment of carrying out mud; Earlier height volatilization organic content is carried out fermentative processing at 20%～80% mud; Utilize the anaerobically fermenting of mikrobe, become simple material such as lower fatty acid, alcohol, aldehyde, carbonic acid gas, ammonia, hydrogen and hydrogen sulfide to carbohydrate, fat, protein degradation in the contained organic substance of mud earlier, these simple materials change biogas into again under the effect of methane bacterial classification then.Make that organic content reduces greatly in the mud.After fermentation, the organic content in the mud is reduced to below 10%.At this moment, carry out press filtration and drying and other treatment again, just can reduce the water cut in the mud greatly, make its water cut drop to 20%～30%, obtain be fit to adding the brickmaking mud of brick-making raw material such as shale.Traditional technology is filter-press dehydration without fermentative processing but directly, can only the water cut of mud be reduced to about 80%, and this water cut has limited the adding proportion of mud.In general 80% water cut and organic volatile component are greater than the mud more than 20%, and the maximum gross weight of adding of making brick from sludge can only reach 30% of brick-making raw material.And adopt biodegradable making brick from sludge technology to obtain be fit to adding the brickmaking mud of brick-making raw material such as shale; Organic content in the mud is reduced to below 10%; Water cut drops to 20%～30%, and the maximum gross weight of adding of making brick from sludge can reach 40%～60% of brick-making raw material, has practiced thrift starting material; Reduce cost, increased the disposal amount of mud greatly.In addition, in the tunnel drying and tunnel roasting process of this technology, the tunnel roasting has utilized organic matter residual in the mud of fermentative processing, makes full use of the heat that its combustion heat value provides roasting.And drying also is to have utilized the hot blast that has waste heat in the tunnel roasting, utilizes the dried waste heat hot blast of brickmaking at last, and the bio anaerobic degraded pond of heating brickmaking mud has formed the balance of heat energy and utilized system.
Further, said fermentation time is 8 days.
Further, said leavening temperature is 35 ℃.
Further, adopt the drying and the roasting kiln of control automatically when said drying and roasting.
Embodiment
Embodiment 1
The present invention adopts biodegradable making brick from sludge technology, may further comprise the steps:
The first step, the bio anaerobic processing will contain the organic mud of 20%～80% high volatilization and put into fermentation vat and ferment, 30 ℃ of leavening temperatures, fermentation time 10 days obtains organic content in the fermented sludge below 10%;
In second step, drying and other treatment with the fermented sludge filter-press dehydration, obtains water cut and is 20%～30% dewatered sludge;
The 3rd step mixed, and dewatered sludge and brick-making raw materials such as being crushed to the following shale of lmm is mixed to grind practice homogenizing, sent into the ageing of ageing storehouse again, and wherein the weight of dewatered sludge accounts for 40%～60% of gross weight;
In the 4th step, the moulding clip adds the brick producing material after the ageing in the 3rd step in the vacuum extruder to, and extrusion moulding obtains wet adobe;
The 5th step, drying, kiln car on the adobe sign indicating number that will wet gets into dry kiln, utilizes in the roasting kiln waste heat in 100～150 ℃ hot blast dry 24 hours;
In the 6th step, roasting is sent the 5th dried adobe of step to roasting kiln, and maturing temperature is 1000～1100 ℃, and roasting time obtained sintered article in 24～32 hours.
Embodiment 2
The present invention adopts biodegradable making brick from sludge technology, may further comprise the steps:
The first step, the bio anaerobic processing will contain the organic mud of 20%～80% high volatilization and put into fermentation vat and ferment, 40 ℃ of leavening temperatures, fermentation time 9 days obtains organic content in the fermented sludge below 10%;
In second step, drying and other treatment with the fermented sludge filter-press dehydration, obtains water cut and is 20%～30% dewatered sludge;
The 3rd step mixed, and dewatered sludge and brick-making raw materials such as being crushed to the following shale of lmm is mixed to grind practice homogenizing, sent into the ageing of ageing storehouse again, and wherein the weight of dewatered sludge accounts for 40%～60% of gross weight;
In the 4th step, the moulding clip adds the brick producing material after the ageing in the 3rd step in the vacuum extruder to, and extrusion moulding obtains wet adobe;
The 5th step, drying, kiln car on the adobe sign indicating number that will wet gets into dry kiln, utilizes in the roasting kiln waste heat in 100～150 ℃ hot blast dry 24 hours;
In the 6th step, roasting is sent the 5th dried adobe of step to roasting kiln, and maturing temperature is 1000～1100 ℃, and roasting time obtained sintered article in 24～32 hours.
Embodiment 3
The present invention adopts biodegradable making brick from sludge technology, may further comprise the steps:
The first step, the bio anaerobic processing will contain the organic mud of 20%～80% high volatilization and put into fermentation vat and ferment, 35 ℃ of leavening temperatures, fermentation time 7 days obtains organic content in the fermented sludge below 10%;
In second step, drying and other treatment with fermented sludge press filtration filter dehydration, obtains water cut and is 20%～30% dewatered sludge;
The 3rd step mixed, with dewatered sludge be crushed to the following shale of lmm and mix and grind to practice homogenizing, send into the ageing of ageing storehouse again, wherein the weight of dewatered sludge accounts for 40%～60% of gross weight;
In the 4th step, the moulding clip adds the brick producing material after the ageing in the 3rd step in the vacuum extruder to, and extrusion moulding obtains wet adobe;
The 5th step, tunnel drying, kiln car on the adobe sign indicating number that will wet gets into dry kiln, utilizes in the roasting kiln waste heat in 100～150 ℃ hot blast dry 24 hours;
In the 6th step, roasting is sent the 5th dried adobe of step to roasting kiln, and maturing temperature is 1000～1100 ℃, and roasting time obtained sintered article in 24～32 hours.
Embodiment 4
The present invention adopts biodegradable making brick from sludge technology, may further comprise the steps:
The first step, the bio anaerobic processing will contain the organic mud of 20%～80% high volatilization and put into fermentation vat and ferment, 30～40 ℃ of leavening temperatures, fermentation time 7～10 days obtains organic content in the fermented sludge below 10%;
In second step, drying and other treatment with fermented sludge press filtration oven dry, obtains water cut and is 20%～30% dewatered sludge;
The 3rd step mixed, with dewatered sludge be crushed to the following shale of lmm and mix and grind to practice homogenizing, send into the ageing of ageing storehouse again, wherein the weight of dewatered sludge accounts for 40%～60% of gross weight;
In the 4th step, moulding clip base adds the brick producing material after the ageing in the 3rd step in the vacuum extruder to, and extrusion moulding obtains wet adobe;
The 5th step, tunnel drying, kiln car on the adobe sign indicating number that will wet gets into dry kiln, utilizes in the roasting kiln waste heat in 100～150 ℃ hot blast dry 23～25 hours;
In the 6th step, roasting is sent the 5th dried adobe of step to roasting kiln, and maturing temperature is 1000～1100 ℃, and roasting time obtained sintered article in 24～32 hours.
All adopt the roasting kiln of automatic control among above-mentioned each embodiment during dry and roasting.In mixing step, adopt powerful uniform mixing equipment, like: homogenizing material distributing machine and the powerful powerful uniform mixing system that extrudes stirrer and the combination of powerful rolling.
Above-described only is preferred implementation of the present invention; Should be understood that; For a person skilled in the art, under the prerequisite that does not break away from structure of the present invention, can also make some distortion and improvement; These also should be regarded as protection scope of the present invention, and these can not influence effect and practical applicability that the present invention implements.
Claims (4)
1. adopt biodegradable making brick from sludge technology, it is characterized in that, may further comprise the steps:
The first step, the bio anaerobic processing will contain the organic mud of 20%～80% high volatilization and put into the fermentation vat fermentation, 30～40 ℃ of leavening temperatures, fermentation time 7～10 days obtains organic content in the fermented sludge below 10%;
In second step, drying and other treatment with the fermented sludge filter-press dehydration, obtains water cut and is 20%～30% dewatered sludge;
The 3rd step mixed, and raw material stirring such as dewatered sludge and shale is mixed to grind practice homogenizing, sent into the ageing of ageing storehouse again, and wherein the weight of dewatered sludge accounts for 40%～60% of gross weight;
In the 4th step, the moulding clip adds the brick producing material after the ageing in the 3rd step in the vacuum extruder to, and extrusion moulding obtains wet adobe;
The 5th step, tunnel drying, kiln car on the adobe sign indicating number that will wet gets into dry kiln, utilizes in the roasting kiln waste heat in 100～150 ℃ hot blast dry 23～25 hours;
In the 6th step, the tunnel roasting is sent dried brick body of the 5th step to the tunnel roasting kiln, and maturing temperature is 1000～1100 ℃, and roasting time obtained sintered article in 24～32 hours.
2. the biodegradable making brick from sludge technology of employing according to claim 1 is characterized in that said fermentation time is 8 days.
3. the biodegradable making brick from sludge technology of employing according to claim 1 and 2 is characterized in that, said leavening temperature is 30 ℃-40 ℃.
4. the biodegradable making brick from sludge technology of employing according to claim 1 is characterized in that, adopts the roasting kiln of control automatically when said drying and roasting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011102326914A CN102390913A (en) | 2011-08-15 | 2011-08-15 | Biodegradation-based sludge brick-making technology |
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| CN2011102326914A CN102390913A (en) | 2011-08-15 | 2011-08-15 | Biodegradation-based sludge brick-making technology |
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| CN102390913A true CN102390913A (en) | 2012-03-28 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103304217A (en) * | 2013-06-17 | 2013-09-18 | 江苏全能机械设备有限公司 | Method for preparing ceramsite by utilizing sludge subjected to anaerobic digestion |
| CN103482722A (en) * | 2012-06-12 | 2014-01-01 | 安徽厚源正位环保科技有限公司 | Domestic waste leachate harmless treatment method |
| CN103570326A (en) * | 2013-10-14 | 2014-02-12 | 内蒙古常盛制药有限公司 | Process for preparing baking-free bricks by using bio-degraded sludge |
| CN104843962A (en) * | 2015-05-18 | 2015-08-19 | 东江环保股份有限公司 | Method for preparing marsh gas and producing sintered bricks by using municipal sludge |
| CN108218469A (en) * | 2018-02-23 | 2018-06-29 | 林映津 | A kind of environmental-friendly ecological material and its manufacturing method |
| CN109467405A (en) * | 2019-01-08 | 2019-03-15 | 浙江工业大学 | A kind of paper mill sludge brick and preparation method |
| CN111891674A (en) * | 2020-07-22 | 2020-11-06 | 合肥佳安建材有限公司 | Green brick transfer trolley positioning device for sludge brick making production |
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| CN1569699A (en) * | 2004-04-26 | 2005-01-26 | 清华大学 | Process for treating excess sludge |
| CN1762863A (en) * | 2004-10-20 | 2006-04-26 | 吴为中 | Sludge drying and resource disposal process |
| CN101012095A (en) * | 2007-01-29 | 2007-08-08 | 清华大学 | Low consumption highly effective sludge drying method |
| CN101244928A (en) * | 2008-03-17 | 2008-08-20 | 彭强 | Method for producing sewage sludge shale brick |
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2011
- 2011-08-15 CN CN2011102326914A patent/CN102390913A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1569699A (en) * | 2004-04-26 | 2005-01-26 | 清华大学 | Process for treating excess sludge |
| CN1762863A (en) * | 2004-10-20 | 2006-04-26 | 吴为中 | Sludge drying and resource disposal process |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482722A (en) * | 2012-06-12 | 2014-01-01 | 安徽厚源正位环保科技有限公司 | Domestic waste leachate harmless treatment method |
| CN103304217A (en) * | 2013-06-17 | 2013-09-18 | 江苏全能机械设备有限公司 | Method for preparing ceramsite by utilizing sludge subjected to anaerobic digestion |
| CN103570326A (en) * | 2013-10-14 | 2014-02-12 | 内蒙古常盛制药有限公司 | Process for preparing baking-free bricks by using bio-degraded sludge |
| CN103570326B (en) * | 2013-10-14 | 2015-04-15 | 内蒙古常盛制药有限公司 | Process for preparing baking-free bricks by using bio-degraded sludge |
| CN104843962A (en) * | 2015-05-18 | 2015-08-19 | 东江环保股份有限公司 | Method for preparing marsh gas and producing sintered bricks by using municipal sludge |
| CN104843962B (en) * | 2015-05-18 | 2017-03-08 | 东江环保股份有限公司 | Municipal sludge prepares biogas and produces the method for fired brick |
| CN108218469A (en) * | 2018-02-23 | 2018-06-29 | 林映津 | A kind of environmental-friendly ecological material and its manufacturing method |
| CN109467405A (en) * | 2019-01-08 | 2019-03-15 | 浙江工业大学 | A kind of paper mill sludge brick and preparation method |
| CN111891674A (en) * | 2020-07-22 | 2020-11-06 | 合肥佳安建材有限公司 | Green brick transfer trolley positioning device for sludge brick making production |
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Application publication date: 20120328 |