CN104086060A - Sludge treatment method - Google Patents
Sludge treatment method Download PDFInfo
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- CN104086060A CN104086060A CN201410269733.5A CN201410269733A CN104086060A CN 104086060 A CN104086060 A CN 104086060A CN 201410269733 A CN201410269733 A CN 201410269733A CN 104086060 A CN104086060 A CN 104086060A
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- sludge treatment
- treatment according
- screen cylinder
- mud
- sludge
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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
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Abstract
The invention discloses a sludge treatment method. The method comprises the following steps: 1, adjusting the water content of sludge to 60-70%; 2, carrying out low temperature cracking on sludge obtained in step 1, and collecting a cracked gas; 3, heating cracking residues obtained after step 2 to 1300-1500DEG C to combust organic matters in the sludge; and 4, using the combusted residues to make glass or cement as an inorganic additive. The sludge treatment method has the advantages of total utilization of sludge, no residual, no emission, and realization of sludge harmlessness and recycling.
Description
Technical field
The invention belongs to field of Environment Protection, be specifically related to a kind of method of sludge treatment.
Background technology
Mud is the product after sewage disposal, is a kind of extremely complicated heterogeneous body being made up of organic relic, bacterium thalline, inorganic particle, colloid etc.The main characteristic of mud is water ratio high (can up to more than 99%), and organic content is high, easily degenerates smellyly, and particle is thinner, and proportion is less, is gluey liquid.It is the concentrated thing between liquid and solid, can transport with pump, but it is difficult to carry out solid-liquid separation by sedimentation.
Throw out, particulate matter and floating matter that mud produces while referring to processing waste water such as Physical, chemical method, physico-chemical processes and biological processes.Mud refers generally to the concentrated thing between liquid and solid, can use pump delivery, but it is difficult to carry out solid-liquid separation by sedimentation.Concentration of suspension, generally 1% ~ 10%, is usually called mud lower than this concentration.Due to source and the water treatment method difference of mud, the sludge quality of generation differs, and the kind of mud is a lot, classification more complicated.
Typical sludge treatment technique flow process, comprises that four are processed or the disposal stage.First stage is that mud is concentrated, and main purpose is to make mud tentatively subtract appearance, dwindles volume or the plant capacity of subsequent disposal structures; Subordinate phase is sludge digestion, makes the organic substance decomposing in mud; Phase III is sludge dewatering, makes mud further subtract appearance; Fourth stage is sludge disposal, adopts certain approach that final mud is dissolved.In the clear liquid that produces of each stage or filtrate, still contain a large amount of pollution substances above, thereby should send back in Sewage treatment systems and processed.Above typical sludge treatment technique flow process, can make mud after treatment, realizes " Four Modernizations ":
(1) minimizing: because sludge moisture content is very high, volume is very large, and is mobility.After the above flow processing, sludge volume reduces to ten original parts, and is changed into solid-stately by liquid state, is convenient to transport and dissolve.
(2) stabilization: in mud, organic content is very high, very easily corrupt and produce stench.After the processing of digestion phase in above flow process, the conversion that is decomposed of putrefactive partial organic substances, is difficult for corruptly, and stench reduces greatly, convenient transport and disposing.
(3) innoxious: in mud, especially, in primary sludge, to contain a large amount of pathogenic bacterias, parasitic ovum and virus, easily cause transmissible disease big area to propagate.Through the digestion phase in above flow process, can kill most relation by marriage worm's ovum, pathogenic bacteria and virus, greatly improve the sanitary index of mud.
(4) resource utilization: mud is a kind of resource, wherein contains a lot of heats, its calorific value is between 10000～15000kJ/kg (dry mud), higher than Coal and coke.In addition, also containing abundant nitrogen phosphorus potassium in mud, is the organic fertilizer with higher fertilizer efficiency.By the digestion phase in above flow process, organism can be changed into biogas, heat is wherein utilized, also can further improve its fertilizer efficiency simultaneously.The concentrated normal technique adopting of mud has gravity concentration, centrifugal concentrating and air supporting concentrated etc.Sludge digestion can be divided into anaerobic digestion and the large class of aerobic sigestion two.Sludge dewatering can be divided into nature mummification and the large class of mechanical dehydration two.Conventional mechanical dehydration technique has belt type filter-pressing dehydration plant, centrifuge dehydration etc.The approach of sludge disposal is a lot, mainly contains agricultural use, sanitary landfill, burning and production material of construction etc.
Be more than typical sludge treatment technique flow process, obtained in various places generally adopting.But various treatment processs all exist a lot of deficiencies.Long processing period or consume the energy large.
Summary of the invention
The object of the invention is to provide a kind of method of sludge treatment.
Technical scheme of the present invention is: a kind of method of sludge treatment, comprises the steps:
The water ratio of mud is adjusted to 60-70% by a,
The mud that b obtains a carries out low temperature pyrolyzer, collects cracked gas,
The cracked residue after b step process is heated to 1300 ~ 1500 DEG C by c, makes organic compound combustion in mud,
D is used for making glass or cement using the residuals after burning as inorganic additives.
In step a, adjust water ratio with spiral pressing dehydrator.
Spiral pressing dehydrator comprises support body, drive unit, borded pile, screen cylinder, screw-blade, described drive unit and screen cylinder are fixed on support body, described borded pile is arranged in screen cylinder, screw-blade is arranged on borded pile, described borded pile connecting drive device, screen cylinder one end is provided with opening for feed, and the other end is provided with discharge port, and described screen cylinder opening for feed one end is lower than discharge port one end.Preferably make screen cylinder inclination 5-10 °.So just can be beneficial to anti-sealing and flow under the influence of gravity in the mud after concentrating, thereby improve dehydration rate.
In order to strengthen squeezing effect, improve dehydration rate, can adopt following several mode:
The first, screen cylinder dwindles to discharge port one end internal diameter gradually from opening for feed one end.
The second, makes the spiral distance between screw-blade dwindle gradually to discharge port one end from opening for feed one end.
The third, the diameter of borded pile increases to discharge port one end gradually from opening for feed one end.
Above-mentioned three kinds of modes can be used separately, also can be used in conjunction with each other.
Further, in step b, the temperature of low temperature pyrolyzer is 200-450 DEG C.Because mud main component is fat, protein, carbohydrate and Mierocrystalline cellulose, can realize cracking at 200 DEG C-450 DEG C becomes oil, not solidifying (combustibility) property gas.
Further, the formula of making cement in steps d is: silicate cement be who knows 70-75 weight part, inorganic additives 5-10 weight part, terra alba 15-20 weight part.
Preferably, the formula of making cement is: silicate cement be who knows 72 weight parts, inorganic additives 8 weight parts, terra alba 16 weight parts.
The present invention compared with prior art tool has the following advantages:
The present invention has realized the complete utilization of mud, and noresidue, nothing are discharged, and have realized innoxious, the resource utilization of mud.
Embodiment
A method for sludge treatment, comprises the steps:
The water ratio of mud is adjusted to 60-70% by a,
The mud that b obtains a carries out low temperature pyrolyzer, collects cracked gas,
The cracked residue after b step process is heated to 1300 ~ 1500 DEG C by c, makes organic compound combustion in mud,
D is used for making glass or cement using the residuals after burning as inorganic additives.
Respectively each step is described in detail below:
Get the mud of sewage work, recording its water ratio is 97.3%, adopts spiral pressing dehydrator to concentrate, and adjusts water ratio to 60-70%.
The spiral pressing dehydrator adopting comprises support body, drive unit, borded pile, screen cylinder, screw-blade, described drive unit and screen cylinder are fixed on support body, described borded pile is arranged in screen cylinder, screw-blade is arranged on borded pile, described borded pile connecting drive device, screen cylinder one end is provided with opening for feed, and the other end is provided with discharge port, and described screen cylinder opening for feed one end is lower than discharge port one end.Preferably make screen cylinder inclination 5-10 °.So just can be beneficial to anti-sealing and flow under the influence of gravity in the mud after concentrating, thereby improve dehydration rate.
In order to strengthen squeezing effect, improve dehydration rate, can adopt following several mode:
The first, screen cylinder dwindles to discharge port one end internal diameter gradually from opening for feed one end.
The second, makes the spiral distance between screw-blade dwindle gradually to discharge port one end from opening for feed one end.
The third, the diameter of borded pile increases to discharge port one end gradually from opening for feed one end.
Above-mentioned three kinds of modes can be used separately, also can be used in conjunction with each other.
The borded pile of spiral pressing dehydrator is arranged in the cylinder being made up of screen cylinder, and the volume of mud from opening for feed to discharge port dwindles gradually, and mud is also compressed gradually.Make solid and the liquid separation in mud by compression, filtrate is discharged from by the mesh of screen cylinder.
The feature of spiral pressing dehydrator
1. can realize continuously dehydrating processing, therefore the support equipment of front and back also can be processed continuously, thereby has saved complicated operation control.
2. simple in structure, the slow speed of revolution, the parts that are driven in rotation are few, therefore need few easy workout part and the maintenance cost of replacing cheap.
3. the slow speed of revolution, low noise, friction, can be used machine simple in structure that stand is installed.
4. the slow speed of revolution, required operation power is little, and therefore day-to-day operation expense is cheap.
5. easily realize airtight construction, the gas producing when can solving simply foul smell problem and reclaiming processed.
6. simple in structure, regulate, maintenance position few, daily administration operation is simple.
7. simple in structure, compared with the water extracter of other kinds, comprehensive cost is cheap.
In step b, the temperature of low temperature pyrolyzer is 200-450 DEG C.Because mud main component is fat, protein, carbohydrate and Mierocrystalline cellulose, can realize cracking at 200 DEG C-450 DEG C becomes oil, not solidifying (combustibility) property gas.
The formula of making cement in steps d is: silicate cement be who knows 70-75 weight part, inorganic additives 5-10 weight part, terra alba 15-20 weight part.
Preferably, the formula of making cement is: silicate cement be who knows 72 weight parts, inorganic additives 8 weight parts, terra alba 16 weight parts.
The present invention has realized the complete utilization of mud, and noresidue, nothing are discharged, and have realized innoxious, the resource utilization of mud.
The above embodiment has only expressed the application's embodiment, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the application's protection domain.It should be pointed out that for the person of ordinary skill of the art, not departing under the prerequisite of present techniques plan plot, can also make some distortion and improvement, these all belong to the application's protection domain.
Claims (10)
1. a method for sludge treatment, is characterized in that, comprises the steps:
The water ratio of mud is adjusted to 60-70% by a,
The mud that b obtains a carries out low temperature pyrolyzer, collects cracked gas,
The cracked residue after b step process is heated to 1300 ~ 1500 DEG C by c, makes organic compound combustion in mud,
D is used for making glass or cement using the residuals after burning as inorganic additives.
2. the method for a kind of sludge treatment according to claim 1, is characterized in that, in step a, adjusts water ratio with spiral pressing dehydrator.
3. the method for a kind of sludge treatment according to claim 2, it is characterized in that, spiral pressing dehydrator comprises support body, drive unit, borded pile, screen cylinder, screw-blade, described drive unit and screen cylinder are fixed on support body, and described borded pile is arranged in screen cylinder, and screw-blade is arranged on borded pile, described borded pile connecting drive device, screen cylinder one end is provided with opening for feed, and the other end is provided with discharge port, and described screen cylinder opening for feed one end is lower than discharge port one end.
4. the method for a kind of sludge treatment according to claim 3, is characterized in that, screen cylinder inclination 5-10 °.
5. the method for a kind of sludge treatment according to claim 4, is characterized in that, screen cylinder dwindles to discharge port one end internal diameter gradually from opening for feed one end.
6. the method for a kind of sludge treatment according to claim 4, is characterized in that, the spiral distance between screw-blade is dwindled to discharge port one end gradually from opening for feed one end.
7. the method for a kind of sludge treatment according to claim 4, is characterized in that, the diameter of borded pile increases to discharge port one end gradually from opening for feed one end.
8. the method for a kind of sludge treatment according to claim 1, is characterized in that, in step b, the temperature of low temperature pyrolyzer is 200-450 DEG C.
9. the method for a kind of sludge treatment according to claim 1, is characterized in that, the formula of making cement in steps d is: silicate cement be who knows 70-75 weight part, inorganic additives 5-10 weight part, terra alba 15-20 weight part.
10. the method for a kind of sludge treatment according to claim 9, is characterized in that, the formula of making cement is: silicate cement be who knows 72 weight parts, inorganic additives 8 weight parts, terra alba 16 weight parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269733.5A CN104086060A (en) | 2014-06-18 | 2014-06-18 | Sludge treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269733.5A CN104086060A (en) | 2014-06-18 | 2014-06-18 | Sludge treatment method |
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| CN104086060A true CN104086060A (en) | 2014-10-08 |
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| CN201410269733.5A Pending CN104086060A (en) | 2014-06-18 | 2014-06-18 | Sludge treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396329A (en) * | 2016-10-20 | 2017-02-15 | 南京工业大学 | Method for compounding and directly pyrolyzing sludge |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0347808A1 (en) * | 1988-06-21 | 1989-12-27 | Max Dipl.-Ing. Aicher | Process for the treatment of sewage sludge |
| US6398921B1 (en) * | 1995-03-15 | 2002-06-04 | Microgas Corporation | Process and system for wastewater solids gasification and vitrification |
| JP2006247683A (en) * | 2005-03-09 | 2006-09-21 | Heisei Kiko Kk | Screw type dehydrator |
| CN201055805Y (en) * | 2007-04-27 | 2008-05-07 | 广州德润环保科技发展有限公司 | Slant pulverizing and dewatering device capable of corrupting organic refuse |
| JP4600956B2 (en) * | 2000-12-28 | 2010-12-22 | 東京瓦斯株式会社 | Sludge treatment method and apparatus |
| CN201809268U (en) * | 2010-09-20 | 2011-04-27 | 江苏牧羊集团有限公司 | Inclined spiral sludge dewatering machine |
| CN202297333U (en) * | 2011-08-18 | 2012-07-04 | 江苏金山环保科技股份有限公司 | Dehydration drying low-temperature pyrolysis sludge treatment device |
-
2014
- 2014-06-18 CN CN201410269733.5A patent/CN104086060A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0347808A1 (en) * | 1988-06-21 | 1989-12-27 | Max Dipl.-Ing. Aicher | Process for the treatment of sewage sludge |
| US6398921B1 (en) * | 1995-03-15 | 2002-06-04 | Microgas Corporation | Process and system for wastewater solids gasification and vitrification |
| JP4600956B2 (en) * | 2000-12-28 | 2010-12-22 | 東京瓦斯株式会社 | Sludge treatment method and apparatus |
| JP2006247683A (en) * | 2005-03-09 | 2006-09-21 | Heisei Kiko Kk | Screw type dehydrator |
| CN201055805Y (en) * | 2007-04-27 | 2008-05-07 | 广州德润环保科技发展有限公司 | Slant pulverizing and dewatering device capable of corrupting organic refuse |
| CN201809268U (en) * | 2010-09-20 | 2011-04-27 | 江苏牧羊集团有限公司 | Inclined spiral sludge dewatering machine |
| CN202297333U (en) * | 2011-08-18 | 2012-07-04 | 江苏金山环保科技股份有限公司 | Dehydration drying low-temperature pyrolysis sludge treatment device |
Non-Patent Citations (1)
| Title |
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| 樊涌，等: "污泥和高炉渣协同制备微晶玻璃", <<北京科技大学学报>> * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396329A (en) * | 2016-10-20 | 2017-02-15 | 南京工业大学 | Method for compounding and directly pyrolyzing sludge |
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Application publication date: 20141008 |