CN102643003A - Method and device for treating sludge in sewage treatment plant - Google Patents
Method and device for treating sludge in sewage treatment plant Download PDFInfo
- Publication number
- CN102643003A CN102643003A CN2012101101180A CN201210110118A CN102643003A CN 102643003 A CN102643003 A CN 102643003A CN 2012101101180 A CN2012101101180 A CN 2012101101180A CN 201210110118 A CN201210110118 A CN 201210110118A CN 102643003 A CN102643003 A CN 102643003A
- Authority
- CN
- China
- Prior art keywords
- hot water
- sludge
- dehydration
- evaporation device
- water boiler
- 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.)
- Granted
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 39
- 239000010865 sewage Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 151
- 230000018044 dehydration Effects 0.000 claims abstract description 57
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 57
- 238000001704 evaporation Methods 0.000 claims abstract description 53
- 230000008020 evaporation Effects 0.000 claims abstract description 52
- 239000001301 oxygen Substances 0.000 claims abstract description 23
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 22
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 24
- 239000007789 gas Substances 0.000 claims description 9
- 239000003517 fume Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 10
- 238000009835 boiling Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000009834 vaporization Methods 0.000 description 5
- 230000008016 vaporization Effects 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000010801 sewage sludge Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000000703 high-speed centrifugation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a method for treating sludge in a sewage treatment plant, which comprises the following steps of: (a) reducing the moisture content of the sludge to 20 to 40 percent by utilizing an evaporation dehydration device; (b) delivering the dehydrated sludge into a hot water boiler to be burned with enriched oxygen; (c) delivering the hot water inside the hot water boiler into the evaporation dehydration device to be used for dehydrating of the sludge; and (d) returning the water flowing from the evaporation dehydration device into the hot water boiler. The invention also relates to a device for treating the sludge, which comprises an evaporation dehydration device and a hot water boiler which is connected with the evaporation dehydration device, wherein the hot water boiler is connected with an enriched-oxygen machine, and the evaporation dehydration device and the hot water boiler form a water circulating system. According to the method and the device, the evaporated sludge is used for being burned, the heat produced by burning the sludge is used for evaporating the moisture in the sludge, so that the expense and secondary pollution problems produced by the transportation of the sludge can be avoided, and the cost is low; and oxygen is introduced when the sludge is burned, so that the burning is more adequate, and the smoke can be ensured to exhaust after reaching the standard and the burning treatment can be ensured to implement successfully.
Description
Technical field
The present invention relates to the sludge treatment environmental technology field, relate in particular to the treatment unit and the method for sludge of sewage treatment plant.
Background technology
In the municipal sewage plant, sewage is able to qualified discharge through microbiological treatment, and a large amount of organic pollutants that originally contain in the sewage are by enrichment, concentrated and then formation mud.Municipal sludge contains a large amount of organic pollutants, contains potential poisonous and harmful elements such as pathogenic bacteria, heavy metal, carcinogenic chemical simultaneously, is the topmost potential secondary pollution source that sewage treatment process forms.
During early stage sewage work builds, generally the sludge treatment unit is simplified and is built, have in addition omit the sludge treatment unit fully, some Sewage Plant is in order to save working cost, even the sludge treatment facility that will build up is on the shelf for a long time.Along with quickening of urbanization process, the municipal sewage treatment amount increases substantially.According to the Environmental Protection Department recent statistics, the town sewage treatment facility that has put into operation by China in 2007 reaches 1178, general design processing power 7,243 ten thousand ton per days, and dispose of sewage 5,320 ten thousand tons average every day.Estimation in view of the above, the whole nation produced the about 1,460 ten thousand tons of (mud cakes: 80% water ratio) of mud in 2007.Grow with each passing day and the wretched insufficiency of sludge treatment ability, the serious backwardness of processing means of mud generation form sharp-pointed contradiction; A large amount of wet mud is arbitrarily transported outward, simply landfill or stacking; Cause many cities the phenomenon in " mud besieged city " to occur, the sludge treatment problem has become the urban environment problem that China can't avoid.
At present, both at home and abroad processing, the disposal of this type of mud are adopted more: natural drying, powerful extruding or high speed centrifugation, high temperature evaporation, methods such as chemistry or biochemical degradation are carried out processed; Methods such as landfill, burning, fermentation composting, roasting material of construction, high temperature cabonization are dissolved, recycling treatment.But these methods exist all that dewatering efficiency is low, equipment price is expensive and running cost is crossed high shortcoming, and some mud adopts the alkalization degradation treatment just to be easy to produce serious pollution once more in the recycling treatment process.
Summary of the invention
The invention reside in and provide that a kind of technology is simple, environmental protection, the thermal source utilization is reasonable, cost is low sludge of sewage treatment plant treatment unit and method.
Concrete technical scheme of the present invention is following:
A kind of sludge of sewage treatment plant treatment process comprises the steps:
A) utilize the dehydration by evaporation device that mud is dewatered, make the water cut of mud be reduced to 20-40%;
B) mud after will dewatering is delivered in the hot water boiler, aerating oxygen in the hot water boiler, and mud is oxygen-enriched combusting in hot water boiler, and gas fume after burning and residue are discharged;
C) be used for the dehydration of mud in the hot water flow in the hot water boiler to the dehydration by evaporation device;
D) effusive water is back in the hot water boiler from the dehydration by evaporation device.
In order to make the water that gets into or flow out in the dehydration by evaporation device can access buffering, in the hot water flow in the step c) in the hot water boiler to the hot water storage pond, be used for the dehydration of mud in hot water flow to the dehydration by evaporation device in the hot water storage pond; In the step d) from the dehydration by evaporation device effusive water behind hot water storage pond, be back in the hot water boiler.
Oxygen in the step b) is that the oxygen enricher of 28-30% provides by oxygen concentration.
Comprise hot water and the ethanol or the acetone of submergence hot-water line in the hot-water line in the dehydration by evaporation device.During use; Hot water in the hot-water line is with ethanol or acetone heating; Because the boiling point of ethanol or acetone is lower; Vaporization forms gas when the temperature of ethanol or acetone reaches boiling point, and ethanol or acetone are phase-changed into the top that rises to device for storing liquid behind the gas mud of heat transferred device for storing liquid outside surface is dewatered; Increased heat and mud contact area, improved the utilization ratio of heat, practiced thrift the energy.
The invention still further relates to a kind of device of realizing above-mentioned sludge of sewage treatment plant treatment process, comprise dehydration by evaporation device, the hot water boiler that is connected with the dehydration by evaporation device, hot water boiler is connected with oxygen enricher, and dehydration by evaporation device and hot water boiler constitute water circulation system.
In order to make the water that gets into or flow out in the dehydration by evaporation device can access buffering; Also be provided with hot water storage pond; Dehydration by evaporation device, hot water storage pond are connected successively with hot water boiler and constitute water circulation system, and the hot water that comes out from hot water boiler gets into the dehydration that the dehydration by evaporation device is used for mud after the buffering of hot water storage pond.
As improvement, the hot-water line that said dehydration by evaporation device is provided with device for storing liquid and runs through device for storing liquid.
The present invention can carry out sludge incineration on the spot and handle in sewage work; Mud behind dehydration by evaporation device dehydration by evaporation is sent in the hot water boiler and is burned; The flue gas and the residue that burn to produce are got rid of from hot water boiler, utilize the water in the heat hot water boiler that sludge incineration produces, and are used for the moisture of the evaporation mud of mud in the hot water entering dehydration by evaporation device of hot water boiler; Avoid transporting the expense and the secondary pollution problem of generation, utilize hot water circulation that resource is fully used; To low, the nonflammable problem of sludge calorific value, through the oxygen enricher aerating oxygen, make burning more abundant during sludge incineration during burning, avoided because the production of the insufficient obnoxious flavour of burning guarantees carrying out smoothly of flue gas qualified discharge standard and burn processing.Technology of the present invention is simple, environmental protection, the thermal source utilization is reasonable, cost is low.
Description of drawings
Fig. 1 is the structural representation of equipment therefor of the present invention;
Fig. 2 is a process flow sheet of the present invention.
Wherein: 1 is the dehydration by evaporation device, and 2 is hot water boiler, and 3 is oxygen enricher, and 4 are hot water storage pond, and 5 is device for storing liquid, and 6 is first hot-water line, and 7 is second hot-water line, and 8 is the 3rd hot-water line, and 9 is the 4th hot-water line.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing.
Referring to Fig. 1; Sludge of sewage treatment plant treatment unit of the present invention; Comprise that dehydration by evaporation device 1, dehydration by evaporation device 1 are connected with hot water storage pond 4 with the 4th hot-water line 9 through first hot-water line 6; Hot water storage pond 4 is connected with hot water boiler 2 with the 3rd hot-water line 8 through second hot-water line 7, and said hot water boiler 2 adopts existing hot water boiler, and water bath 2 is connected with oxygen enricher 3.First hot-water line 6 that dehydration by evaporation device 1 comprises device for storing liquid 5 and runs through device for storing liquid 5.Mud after 1 dehydration of dehydration by evaporation device burns in hot water boiler 2; Water in the heat hot water boiler 2 that produces; Hot water in the hot water boiler 2 flows into hot water storage pond 4 through second hot-water line 7; The hot water in hot water storage pond 4 flows into the liquid that is used for heating device for storing liquid 5 in the dehydration by evaporation device 1 through first hot-water line 6, flows back to hot water storage pond 4 from dehydration by evaporation device 1 effusive water through the 4th hot-water line 9, and the hot water in the hot water storage pond 4 is back to hot water boiler 2 and continues heating; Heated hot water is continuously introduced to hot water storage pond 4, constitutes water circulation system between dehydration by evaporation device 1, hot water storage pond 4 and the hot water boiler 2.
Referring to Fig. 2; When adopting said apparatus work; Utilize in the dehydration by evaporation device 1 ethanol or acetone in the heating of the hot water in first hot-water line 6 device for storing liquid 5; Ethanol or acetone are advisable with submergence first hot-water line 6 in the device for storing liquid 5; Hot water in first hot-water line 6 is with the heating of the ethanol in the device for storing liquid 5 or acetone, and vaporization forms gas when the temperature of ethanol or acetone reaches boiling point, and ethanol or acetone are phase-changed into the top that rises to device for storing liquid behind the gas mud of heat transferred device for storing liquid outside surface is dewatered; Make the water cut of mud be reduced to 20-40%; Mud after the dehydration is delivered in the hot water boiler 2; Through oxygen concentration is oxygen enricher 3 past hot water boiler 2 aerating oxygens of 28-30%; Mud is at 2 li oxygen-enriched combustings of hot water boiler, and gas fume after burning and residue are discharged the water in the heat hot water boiler 2 of generation from fume emission mouth and residue drain; In hot water flow in the hot water boiler 2 to the hot water storage pond 4, be used for the dehydration of mud in hot water flow to the dehydration by evaporation device 1 in the hot water storage pond 4; Effusive hot water is back to behind hot water storage pond 4 and continues heating in the hot water boiler 2 from dehydration by evaporation device 1; Heated hot water continues to flow in the hot water storage pond 4; Be used for the dehydration of mud in hot water flow to the dehydration by evaporation device 1 in the hot water storage pond 4, constitute hot water circulation.
Dehydration by evaporation device according to the invention is preferably the floor heating technology, in the ventilation house, builds floor heating terrace, the hot-water line that below terrace, is provided with device for storing liquid and runs through device for storing liquid; For the contact area that increases heat and mud, the utilization ratio that improves heat; Device for storing liquid is preferably cuboid, and it is thick that the mud that will wet is tiled on the floor heating terrace 20cm, stirs in good time; Keep 50 ℃ of floor heating terrace temperature, moisture percentage in sewage sludge was up to standard in about 8 hours.
Selection through liquid substance in the device for storing liquid needs to select according to practical situation; It is to utilize liquid substance to be vaporized into gas that the present invention uses the purpose of this liquid substance; Utilize gas that the heat transmission is heated mud; Generally speaking, the water temperature that the boiling point of this liquid substance is lower than hot water in the dehydration by evaporation device gets final product, and selecting boiling point usually for use is that 78 ℃ of ethanol or boiling point are that 56 ℃ acetone is just passable.
Mud after the present invention will be evaporated burns; Utilize the moisture in the heat of vaporization mud that sludge incineration produces, made full use of the energy, technology is simple, environmental protection, the thermal source utilization is reasonable, cost is low; Flue gas after the burning reaches emission standard, and the residue that burning produces also seldom.
100m with water ratio 80%
3Wet mud calculates, and the mud thermal capacitance is equal to water, and the vaporization heat of water is 40.8 kj/mol, is equivalent to 2260 kilojoule per kilogram, moisture percentage in sewage sludge 80%, and moisture percentage in sewage sludge 20% after the evaporation process, needs transpiring moisture 75 m
3, evaporate 75 m
3The heat that water needs is 1.7 * 10
8Kilojoule, about 5.8 tons of standard coal equivalents.It is 1.5 * 10 that 100 tons of water are elevated to 50 ℃ of needed heats from 15 ℃
5Kilojoule is compared this and can be ignored with vaporization heat.
100m
3Add oxygen after the wet sludge dewatering and burn the heat 3.4 * 10 that produces
8Kilojoule, about 11.6 tons of standard coal equivalents, and actual boiler thermal output can reach more than 70%, in the necessary thermal losses of deduction, the heat that does not need extra fuel, sludge incineration to produce basically just can satisfy the energy of sludge water content evaporation.
Claims (7)
1. a sludge of sewage treatment plant treatment process is characterized in that comprising the steps:
A) utilize the dehydration by evaporation device that mud is dewatered, make the water cut of mud be reduced to 20-40%;
B) mud after will dewatering is delivered in the hot water boiler, aerating oxygen in the hot water boiler, and mud is oxygen-enriched combusting in hot water boiler, and gas fume after burning and residue are discharged;
C) be used for the dehydration of mud in the hot water flow in the hot water boiler to the dehydration by evaporation device;
D) effusive water is back in the hot water boiler from the dehydration by evaporation device.
2. sludge treatment method according to claim 1 is characterized in that the hot water flow in the hot water boiler to hot water is store in the pond in the step c), is used for the dehydration of mud in hot water flow to the dehydration by evaporation device in the hot water storage pond; In the step d) from the dehydration by evaporation device effusive water behind hot water storage pond, be back in the hot water boiler.
3. sludge treatment method according to claim 1 and 2 is characterized in that the oxygen in the step b) is that the oxygen enricher of 28-30% provides by oxygen concentration.
4. sludge treatment method according to claim 3 is characterized in that comprising in the said dehydration by evaporation device hot water and the ethanol or the acetone of submergence hot-water line in the hot-water line.
5. device of realizing the said sludge of sewage treatment plant treatment process of above-mentioned arbitrary claim; It is characterized in that comprising dehydration by evaporation device, the hot water boiler that is connected with the dehydration by evaporation device; Hot water boiler is connected with oxygen enricher, and dehydration by evaporation device and hot water boiler constitute water circulation system.
6. sludge of sewage treatment plant treatment unit according to claim 5 is characterized in that also being provided with hot water storage pond, and dehydration by evaporation device, hot water storage pond are connected successively with hot water boiler and constitute water circulation system.
7. according to claim 5 or 6 described sludge of sewage treatment plant treatment unit, it is characterized in that the hot-water line that said dehydration by evaporation device comprises device for storing liquid and runs through device for storing liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101101180A CN102643003B (en) | 2012-04-16 | 2012-04-16 | Method and device for treating sludge in sewage treatment plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101101180A CN102643003B (en) | 2012-04-16 | 2012-04-16 | Method and device for treating sludge in sewage treatment plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102643003A true CN102643003A (en) | 2012-08-22 |
| CN102643003B CN102643003B (en) | 2013-06-12 |
Family
ID=46656126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101101180A Active CN102643003B (en) | 2012-04-16 | 2012-04-16 | Method and device for treating sludge in sewage treatment plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102643003B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036518A (en) * | 2015-08-03 | 2015-11-11 | 复旦大学 | Deep dehydration method for excess sludge of urban sewage plant |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56121907A (en) * | 1980-02-28 | 1981-09-25 | Ebara Corp | Combined treatment method for refuse and sewage and device thereof |
| CN101618931A (en) * | 2009-07-28 | 2010-01-06 | 清华大学 | Mud drying and incinerating integrated system and use method thereof |
| CN101774743A (en) * | 2010-01-26 | 2010-07-14 | 沈阳航空工业学院 | Latent heat recoverable multi-phase change sludge drying method and device |
-
2012
- 2012-04-16 CN CN2012101101180A patent/CN102643003B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56121907A (en) * | 1980-02-28 | 1981-09-25 | Ebara Corp | Combined treatment method for refuse and sewage and device thereof |
| CN101618931A (en) * | 2009-07-28 | 2010-01-06 | 清华大学 | Mud drying and incinerating integrated system and use method thereof |
| CN101774743A (en) * | 2010-01-26 | 2010-07-14 | 沈阳航空工业学院 | Latent heat recoverable multi-phase change sludge drying method and device |
Non-Patent Citations (1)
| Title |
|---|
| 李媛: "德国斯图加特市污水处理厂污泥焚烧工艺", 《中国环保产业》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036518A (en) * | 2015-08-03 | 2015-11-11 | 复旦大学 | Deep dehydration method for excess sludge of urban sewage plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102643003B (en) | 2013-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101823825B (en) | Sludge dehydrating and drying process method and device | |
| CN102500604B (en) | Household solid garbage recycling and renewable biological carbon circulating technology | |
| CN104609693B (en) | A kind of high-concentration organic matter method for sludge treatment | |
| CN105180170A (en) | Municipal solid waste coordinative incineration power generation system | |
| CN102374543A (en) | Anaerobic fermentation-incineration combined treatment method for organic wastes | |
| CN103723899B (en) | Sludge comprehensive treatment method based on anaerobic digestion and hydrothermal carbonization | |
| CN203159415U (en) | Sludge high-temperature carbonization system | |
| CN205065727U (en) | City solid waste burns power generation system in coordination | |
| CN100560235C (en) | Biological and the burning disposal integrated technique of dewatered city domestic garbage | |
| CN201793398U (en) | Household garbage leachate harmless treatment device | |
| CN203360247U (en) | Comprehensive sludge treatment integrated equipment | |
| CN102701564A (en) | Sludge drying method | |
| CN202688162U (en) | Mixed burning and incinerating comprehensive treatment device for anaerobic sludge generated in process of treating domestic garbage leachate | |
| CN107473303A (en) | A kind of leachate zero-emission based on waste incineration and generating electricity cooperates with ultralow System and method for | |
| CN203976600U (en) | A kind of city disposal of oily sludge system | |
| CN102643003B (en) | Method and device for treating sludge in sewage treatment plant | |
| CN104649529A (en) | Recycling treatment system and recycling treatment method of dewatered sludge | |
| CN204824570U (en) | Industrial sludge drying system | |
| CN106145583A (en) | Mud rapid fermentation composting or system soil pipe-line system | |
| CN205347174U (en) | Utilize plus sludge drying of living beings and processing apparatus that carbomorphism combined together | |
| CN203413642U (en) | Energy-saving environment-friendly household refuse incinerator | |
| CN205773995U (en) | A kind of sludge drying system based on marsh gas power generation fume afterheat | |
| CN105805757A (en) | Energy-saving environment-friendly efficient pyrolysis device for garbage | |
| CN101774742B (en) | Air sucking and pressing type high-efficiency energy-saving instant quick low-temperature sludge drying, disinfecting and fresh keeping method and device | |
| CN101456660A (en) | Sludge treater and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU SHENGSHI WATER INDUSTRY CO., LTD. Free format text: FORMER NAME: JIANGSU SHENGSHI WATER DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 210019 Jiangsu City, Jianye Province, Yunlong District, Nanjing, No. 88 building, building B, No. 19 Patentee after: JIANGSU SENSE WATER Co.,Ltd. Address before: 210019 Jiangsu City, Jianye Province, Yunlong District, Nanjing, No. 88 building, building B, No. 19 Patentee before: JIANGSU SENSE WATER DEVELOPMENT CO.,LTD. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Method and device for treating sludge in sewage treatment plant Effective date of registration: 20170122 Granted publication date: 20130612 Pledgee: Jiangsu credit Company Limited by Guarantee Pledgor: JIANGSU SENSE WATER Co.,Ltd. Registration number: 2017320000001 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201125 Granted publication date: 20130612 Pledgee: Jiangsu credit Company Limited by Guarantee Pledgor: JIANGSU SENSE WATER Co.,Ltd. Registration number: 2017320000001 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Sewage treatment plant sludge treatment method and device Effective date of registration: 20201126 Granted publication date: 20130612 Pledgee: Jiangsu Bank Co.,Ltd. Nanjing Chengxi Branch Pledgor: JIANGSU SENSE WATER Co.,Ltd. Registration number: Y2020980008510 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20211119 Granted publication date: 20130612 Pledgee: Jiangsu Bank Co.,Ltd. Nanjing Chengxi Branch Pledgor: JIANGSU SENSE WATER Co.,Ltd. Registration number: Y2020980008510 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Method and device for sludge treatment in sewage treatment plants Effective date of registration: 20230323 Granted publication date: 20130612 Pledgee: Suzhou Bank Co.,Ltd. Nanjing Jiangning Branch Pledgor: JIANGSU SENSE WATER Co.,Ltd. Registration number: Y2023980035907 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |