CN102373103A - Method for producing regenerated fuel by using sludge in urban sewage treatment plant - Google Patents
Method for producing regenerated fuel by using sludge in urban sewage treatment plant Download PDFInfo
- Publication number
- CN102373103A CN102373103A CN 201010250708 CN201010250708A CN102373103A CN 102373103 A CN102373103 A CN 102373103A CN 201010250708 CN201010250708 CN 201010250708 CN 201010250708 A CN201010250708 A CN 201010250708A CN 102373103 A CN102373103 A CN 102373103A
- Authority
- CN
- China
- Prior art keywords
- sludge
- treatment plant
- regenerated fuel
- drying
- rotating drum
- 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.)
- Pending
Links
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention discloses a method for producing a regenerated fuel by using sludge in an urban sewage treatment plant. The method comprises the following steps of: (1) pre-treating raw materials, namely adding plant straws or/and Chinese medicinal waste residues into the sludge generated in the urban sewage treatment plant, and stirring the mixed materials uniformly by using a horizontal stirrer; (2) drying, molding and sterilizing, namely conveying the mixture obtained in the step (1) to a roller drier, so that the sludge bacteria cell walls are broken to accelerate the material drying process and simultaneously, a sterilization function is realized, wherein the water content of the materials treated by the roller drier is reduced to 40 to 50 percent, meanwhile, the materials are granulated and the diameter of the granules is 2 to 10 millimeters; and (3) performing secondary drying and sterilization, namely conveying the granular materials discharged from the roller drier to a solar and artificial geothermal greenhouse, and performing further drying and sterilization treatment, wherein the water content of the materials dried for 24-48 hours is reduced to 8 to 15 percent. The method is simple in process, easy to operate and convenient for popularization and application; and by using solar energy as a hot source, the energy consumption in the treatment process can be greatly saved, and the production cost is reduced.
Description
Technical field
The present invention relates to the mud refuse reclamation technology of municipal sewage plant, be specifically related to a kind of method of utilizing sludge from wastewater treatment plant to produce regenerated fuel.
Background technology
Along with The development in society and economy, the increase of urban population, the quantity discharged of trade effluent and city domestic sewage increases day by day, and the excess sludge that the municipal sewage plant produces also increases considerably thereupon.Show according to statistical information in 2007: the water ratio that national urban wastewater treatment firm produces is that 80% sludge quantity is surplus in the of 900 ten thousand tons.This mud is mainly taked disposal options such as sanitary landfill, compost and burning at present both at home and abroad; There are many drawbacks; Like the waste of land resources, the generation of secondary pollution etc.; For example Japan and American-European countries utilize anhydration and incineration to realize harmless treatment, and this treatment process has high investment, expensive characteristics.Therefore, the treatment and disposal of sludge from wastewater treatment plant has become the common environmental problem of paying close attention in the world wide.
Summary of the invention
In order to overcome the above-mentioned defective that the prior art field exists; The objective of the invention is to, a kind of method of utilizing sludge from wastewater treatment plant to produce regenerated fuel is provided, seeing that the solid phase of sludge from wastewater treatment plant is main with organic constituent mainly; Has combustibility; Mud is processed into regenerated fuel, has realized the resource utilization of mud, the secondary environmental pollution that can avoid it to bring simultaneously.
The method of utilizing sludge from wastewater treatment plant to produce regenerated fuel provided by the invention, it may further comprise the steps:
(1) raw materials pretreatment adds straw or/and waste residue of Chinese herbs stirs mixture with horizontal mixer in the mud that the municipal sewage plant produces; The quality ratio of mud contained humidity≤80%, straw or/and the mass ratio of waste residue of Chinese herbs and mud for amounting to dry weight 1: 1: 3～1: 1: 10, straw is or/and before waste residue of Chinese herbs adds, carry out pulverization process, its particle diameter is 1～8mm.
(2) drying and moulding and germicidal treatment are transported to rotating drum dryer to step () gained mixture, and material is carried out drying treatment, play germicidal action simultaneously; The water ratio of handling the back material through rotating drum dryer is reduced to 40～50%, and material is by prilling simultaneously, and particle diameter is 2～10mm; Temperature in the rotating drum dryer is controlled in 120～250 ℃ of scopes, and drum rotational speed is 800～2000r/min, and material residence time in rotating drum dryer is 20～35min.
(3) redrying sterilization from the granular material that rotating drum dryer comes out, is delivered to sun power and artificial underground heat booth is made further mummification, germicidal treatment, and through 24～48h drying treatment, material water ratio reduces to 8～15%, obtains regenerated fuel; Temperature in the said booth is controlled at 50～80 ℃, and ventilation is controlled at 1000～2000m
3/ h.Utilize solar source when sufficient sunshine, if run into rainy weather or can not utilize winter sun power to reach this TR, then launches artificial underground heat system held said temperature.
Regenerated fuel according to method of the present invention obtains is used for circular fluid bed and mixes burning with coal, and the quality mixed-fuel burning proportion of coal and regenerated fuel is: 2: 1～3: 1.
The method of utilizing sludge from wastewater treatment plant to produce regenerated fuel provided by the invention; Its beneficial effect is; This method is mixed sludge of sewage treatment plants and is handled with organic waste such as straws; Through drying, sterilization, moulding, process regenerated fuel, this method technology is simple, easy handling, easy to utilize; Employing sun power is thermal source, can practice thrift the energy consumption in the treating processes significantly, reduces production costs.
Embodiment
Below in conjunction with an embodiment, the method for utilizing sludge from wastewater treatment plant to produce regenerated fuel provided by the invention is carried out detailed explanation
Embodiment
The sludge from wastewater treatment plant that utilizes of present embodiment is produced the method for regenerated fuel, and it may further comprise the steps:
(1) raw materials pretreatment adds straw or/and waste residue of Chinese herbs stirs mixture with horizontal mixer in the mud that the municipal sewage plant produces; The quality ratio of mud contained humidity≤80%, the mass ratio of straw and waste residue of Chinese herbs and mud is for amounting to dry weight 1: 1: 5, and straw is or/and before waste residue of Chinese herbs adds, carry out pulverization process, and its particle diameter is 1～8mm.
(2) drying and moulding and germicidal treatment are transported to rotating drum dryer to step () gained mixture, and material is carried out drying treatment, sludge bacteria somatocyte wall is broken quicken the dry materials process, play germicidal action simultaneously; The water ratio of handling the back material through rotating drum dryer is reduced to 40～50%, and material is by prilling simultaneously, and particle diameter is 2～10mm; Temperature in the rotating drum dryer is controlled at about 200 ℃, and drum rotational speed is 1200r/min, and material residence time in rotating drum dryer is 30min.The rotating drum dryer drying system, under 150 ℃～250 ℃ temperature condition, sludge bacteria somatocyte wall just can thoroughly crack, and makes the cell thalline of original 300,000 molecular weight resolve into the organic acid substance of 7,000 left and right sides molecular weight.Molecular weight reduces, and mud has lost viscosity, and original thickness state has become easy dispersive material, and " the molecule combination water " of mud become " intermittently water " and " free-water ", is convenient to solar energy desiccation or drying and dewatering.
(3) redrying sterilization from the granular material that rotating drum dryer comes out, is delivered to sun power and artificial underground heat booth is made further mummification, germicidal treatment, and through the 48h drying treatment, material water ratio reduces to 8～15%, obtains regenerated fuel; Temperature in the said booth is controlled at 50～80 ℃, and ventilation is controlled at 1000～2000m
3/ h.
Solar greenhouse adopts Totally-enclosed-type steelwork, import thickening sun power special plastic film canopy to have characteristics such as high printing opacity, anti-aging; Can effectively build up solar source; Temperature can reach between 50～80 ℃, and certain time can be killed most pathogenic bacterias and parasite and ovum in the mud.Utilize solar source when sufficient sunshine, if run into rainy weather or can not utilize winter sun power to reach this TR, then launches artificial underground heat system held said temperature.
The artificially thermal process is to be produced by the pipeline hot water transmission recycle system, and its normal temperature temperature is more than 55 ℃, like 1000m
2The space can digest oven dry in 48 hours and handle 50 tons in wet mud, produced about about 15 tons of regenerated fuel.The artificially thermal process is the safest, most economical, the environmental protection of current sludge disposal, the most quick technology of dehydration and drying reliably with the sun power perfect adaptation, and its treating processes meets the national environmental protection requirement fully, can realize zero release basically, clean production.
This regenerated fuel is the solid shape data of the particle of a kind of low-carbon (LC) amount, low sulfur amount, is the coal-fired splendid auxiliary fuel of current fluidized-bed combustion boiler.Through detecting, this product burning caloic is between 2200～3500 kilocalories, and the per kilogram dewatered sludge is equivalent to the heat of 0.44～0.57 kilogram of standard coal equivalent.This product does not belong to corrosives, does not belong to poisonous substances, does not belong to radioactive substance.
The contrast conclusion of the regeneration data being mixed the sintering fruit in 24 hours through certain power & light company shows:
(1) this regenerated fuel can be mixed burning in circular fluid bed;
(2) mix the burning back boiler efficiency is had no influence, mix the burning behind efficiency and slightly improve.Above-mentioned this regenerated fuel of conclusion confirmation can applied in current circular fluid bed fully.
Claims (4)
1. method of utilizing sludge from wastewater treatment plant to produce regenerated fuel; It is characterized in that; It may further comprise the steps: (one) raw materials pretreatment adds straw or/and waste residue of Chinese herbs stirs mixture with horizontal mixer in the mud that the municipal sewage plant produces; (2) drying and moulding and germicidal treatment are transported to rotating drum dryer to step () gained mixture, and material is carried out drying treatment, play germicidal action simultaneously; The water ratio of handling the back material through rotating drum dryer is reduced to 40～50%, and material is by prilling simultaneously, and particle diameter is 2～10mm; (3) redrying sterilization from the granular material that rotating drum dryer comes out, is delivered to sun power and artificial underground heat booth is made further mummification, germicidal treatment, and through 24～48h drying treatment, material water ratio reduces to 8～15%.
2. the method for utilizing sludge from wastewater treatment plant to produce regenerated fuel according to claim 1; It is characterized in that: in the step (); The quality ratio of mud contained humidity≤80%, straw or/and the mass ratio of waste residue of Chinese herbs and mud for amounting to dry weight 1: 1: 3～1: 1: 10, straw is or/and before waste residue of Chinese herbs adds; Carry out pulverization process, its particle diameter is 1～8mm.
3. the method for utilizing sludge from wastewater treatment plant to produce regenerated fuel according to claim 1; It is characterized in that: in the step (two); Temperature in the rotating drum dryer is controlled in 120～250 ℃ of scopes; Drum rotational speed is 800～2000r/min, and material residence time in rotating drum dryer is 20～35min.
4. the method for utilizing sludge from wastewater treatment plant to produce regenerated fuel according to claim 1 is characterized in that: in the step (three), the temperature in the said booth is controlled at 50～80 ℃, and ventilation is controlled at 1000～2000m
3/ h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010250708 CN102373103A (en) | 2010-08-11 | 2010-08-11 | Method for producing regenerated fuel by using sludge in urban sewage treatment plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010250708 CN102373103A (en) | 2010-08-11 | 2010-08-11 | Method for producing regenerated fuel by using sludge in urban sewage treatment plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102373103A true CN102373103A (en) | 2012-03-14 |
Family
ID=45792337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010250708 Pending CN102373103A (en) | 2010-08-11 | 2010-08-11 | Method for producing regenerated fuel by using sludge in urban sewage treatment plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102373103A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194861A (en) * | 2014-06-18 | 2014-12-10 | 叶绍朋 | Process for producing low-heating-value anthracite coal by sludge of sewage treatment plant and synthesis of catalyst of low-heating-value anthracite coal |
| CN107381983A (en) * | 2017-07-24 | 2017-11-24 | 胡沛 | A kind of medicament for handling oily sludge and preparation method thereof |
-
2010
- 2010-08-11 CN CN 201010250708 patent/CN102373103A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194861A (en) * | 2014-06-18 | 2014-12-10 | 叶绍朋 | Process for producing low-heating-value anthracite coal by sludge of sewage treatment plant and synthesis of catalyst of low-heating-value anthracite coal |
| CN104194861B (en) * | 2014-06-18 | 2016-11-02 | 叶绍朋 | Sludge of sewage treatment plant low combustion value anthracite synthesizes |
| CN107381983A (en) * | 2017-07-24 | 2017-11-24 | 胡沛 | A kind of medicament for handling oily sludge and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101746941B (en) | Biological drying method for treating dewatered sludge of urban sewage plant | |
| Shi et al. | Strategies of valorization of sludge from wastewater treatment | |
| KR101775696B1 (en) | Manufacturing method of fuel using sludge | |
| CN102408177A (en) | Biological complex enzyme for sludge recycling and use method thereof | |
| Tyagi et al. | Energy and resource recovery from sludge: Full-scale experiences | |
| CN102329147B (en) | Lightweight porcelain granule manufactured by utilizing printing and dyeing sludge and manufacturing method thereof | |
| CN100560235C (en) | Biological and the burning disposal integrated technique of dewatered city domestic garbage | |
| CN102730912A (en) | Integrated sewage-sludge treatment method | |
| CN104743756A (en) | Method for recycling sludge with low energy consumption | |
| CN102173557B (en) | Method for treating low-heating value excess sludge | |
| CN102533381A (en) | Method for preparing fuel by using sludge | |
| CN100571912C (en) | Biological and the gasification process integrated technique of dewatered city domestic garbage | |
| KR20150049087A (en) | Methods and system to energize that containing organic waste, domestic waste | |
| CN203048760U (en) | Device for stabilizing sludge with lime | |
| Chen et al. | Speciation and transformation of nitrogen for sewage sludge hydrothermal carbonization-influence of temperature and carbonization time | |
| CN203976600U (en) | A kind of city disposal of oily sludge system | |
| CN106085545A (en) | A kind of distributed environment-friendly type organic solid waste substance treating method and system | |
| CN102373103A (en) | Method for producing regenerated fuel by using sludge in urban sewage treatment plant | |
| CN101773751B (en) | Lightweight cathode and anode water treatment filter material and preparation method thereof | |
| CN111960632A (en) | Sludge deep dehydration coupling biomass pyrolysis system and method thereof | |
| CN208684795U (en) | A kind of organic fertilizer joint production | |
| CN101870552B (en) | Treatment method for stabilizing and reducing municipal sludge | |
| CN105180171A (en) | Garbage treatment method and garbage treatment equipment | |
| CN104087619A (en) | Bagasse and kitchen waste mixing wet anaerobic fermentation degradation and methane production method | |
| KR100349637B1 (en) | Manure derived fuel and manufacturing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120314 |