CN202594925U - Sludge regeneration and utilization device of sewage plant - Google Patents
Sludge regeneration and utilization device of sewage plant Download PDFInfo
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- CN202594925U CN202594925U CN2012200751276U CN201220075127U CN202594925U CN 202594925 U CN202594925 U CN 202594925U CN 2012200751276 U CN2012200751276 U CN 2012200751276U CN 201220075127 U CN201220075127 U CN 201220075127U CN 202594925 U CN202594925 U CN 202594925U
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Abstract
The utility model provides a sludge regeneration and utilization device of a sewage plant, and the device is provided with a first-stage sludge pump, a flocculation reaction tank, a second-stage sludge pump, an electrolyzing machine, an intermediate tank and a third-stage sludge pump, wherein the inlet of the flocculation reaction tank is connected with the sludge outlet of a secondary tank of a sewage treatment plant through pipelines and the first-stage sludge pump; the outlet of the flocculation reaction tank is connected with the inlet of the electrolyzing machine through the second-stage sludge pump; the outlet of the electrolyzing machine is connected with the inlet of the intermediate tank; and the outlet of the intermediate tank is connected with the water inlet of an anaerobic tank through the third-stage sludge pump and a pipeline. The sludge regeneration and utilization device of the sewage plant disclosed by the utility model adopts electrolysis and has the outstanding effects that (1) a sludge structure and a microorganism cell wall are damaged and digested cytoplasm is reflowed to the anaerobic tank to be circulated, i.e., a carbon source is supplemented to anaerobic microorganisms and the sludge output also can be reduced; (2) the microorganisms and viruses in the sludge are inhibited and killed; (3) deodorization is realized; (4) a large amount of organic matters in the sludge are decomposed; and (5) de-coloring is realized.
Description
Technical field
The utility model relates to a kind of sludge treatment equipment, particularly relates to a kind of mud regenerated using device.
Background technology
Along with expanding economy, wastewater discharge and sewage treatment facility (sewage work) are increasing.In Sewage Plant, the processing that is accompanied by sewage can produce 0.5～2% mud, and sludge treatment disposal and method become the focus of domestic and international concern gradually.Show that according to firmly building portion's data by the end of the end of the year in 2009, national town sewage treatment capacity reached for 280 billion cubic meter/years, wet mud (water ratio 80%) generation is broken through 2,000 ten thousand tons/year.And in sewage treatment process, bacterium and most of Parasites are deposited in the mud, and virus also can be adsorbed on the particle in the sewage, also deposit in the mud with the particulate deposition.Mud is a kind of by product of Pollution abatement technology; This by product enrichment pollutants in sewage; Contain hazardous and noxious substances such as nutritive substances such as a large amount of nitrogen, phosphorus and organism, viral micro-organisms, parasitic ovum, heavy metal, have stronger pollution character.If mud is mishandling, the approach of its pollution spread is very widely.At first, the water ratio of mud is high, and except a part of spontaneous evaporation is in air, major part will be infiltrated surface soil layer, and under the washing away of rainwater etc. entering surface water system or influence underground water, the pollutent in the mud will be propagated along these two kinds of approach.Secondly, the mud that does not carry out sanitisation gets into the farmland down to the vegetable plot, the possible direct threats mankind's food chain.The 3rd, mud contains a large amount of organic matters, and is easily corrupt and distribute stench, possibly influence surrounding enviroment.And the gas of discharging is with serious pollution greenhouse gases, and environment is produced serious harm.In addition, the quantity of mud is huge, and these mud of accumulating need bigger space and a lot of instruments, and these spaces and instrument all maybe be contaminated, accomplish to acquire a certain degree of difficulty with world's effective " completely cutting off " of other contacting foodstuff chain.Obviously,, get into human food chain, will inevitably cause transmission of disease if mud is mishandling.
Yet in the WWT development course, although mud is one of important step in the WWT flow process, because secular insufficient recognition of people and ignorance, the sludge disposal problem is shelved for a long time, and the development of sludge disposal quite lags behind.Show that according to finding the mud that China municipal sewage plant is produced has 80% not dealt carefully with, the mud generation greatly, is arbitrarily stacked and the pollution and the recontaminate problem that are caused have highlighted, and has caused social concern.
Sludge treatment and method of disposal commonly used are now seen Fig. 1.
Though utilize these methods to handle mud, its application still has certain limitation.Subject matter has: the water ratio of (1) mud is too high, and this part moisture content is difficult to burn, and transportation cost is high, and the stacking floor space is big, and directly landfill then can make landfill yard scrap in advance; (2) mikrobe, pathogenic agent handle not thorough, if directly use or throw aside, may the contaminated food chain; (3) in treating processes, produce stench,, pollute surrounding environment simultaneously to a large amount of greenhouse gases of airborne release; (4) do not fix heavy metal in the mud, possibly cause the heavy metal accumulation in soil to exceed standard, the hardening soil, contaminated land causes irreversible arable land to degenerate, and has limited the recycling of mud; (5) Financial cost is high: method such as UW cracks, ozone oxidation or required energy consumption are high; Need to add a large amount of chemical agents; Though can realize the purpose of mud decrement, running cost is high, weighs from economical standard; Still not fully up to expectations, can't realize mass-producing.
Therefore; Pollute today serious day by day, that water surrounding worsens day by day at water; The Sewage treatment systems that lacks mud safe disposal consideration is incomplete; Also can't satisfy the environmental goals requirement, show outstanding the secondary pollution problem day that mud causes, the problem of mud is to the stage that can not be ignored; Press for safe, reasonable, reliable, efficient, the less energy-consumption that research, exploitation is fit to China's economic present situation and developmental level, low investment, sludge treatment technology and support equipment cheaply, finally realize the minimizing of municipal sludge treatment and disposal, innoxious, stabilization and resource utilization.
The utility model content
The purpose of the utility model is the problem to the existence of existing sludge treatment technology; Provide a kind of and destroy mud structure and microorganism wall through electrolysis tech, organic composition in dissolving, the oxidized sludge is back to anaerobic pond again and carries out Circulation; Both can be the anaerobion supplementary carbon source; Can reduce excess sludge production again, thereby realize improving sewage treating efficiency, and make the mud regenerated using device of mud decrement double effects.
The said sewage plant sludge regenerated using of utility model the utility model device, it comprises one-level sludge pump, flocculation tank, secondary sludge pump, electrolysis machine, middle pond and three grades of sludge pumps; The import of described flocculation tank connects with the sludge outlet of sewage work second pond through pipeline and one-level sludge pump; The outlet of flocculation tank connects with the import of electrolysis machine through the secondary sludge pump; The import in pond in the middle of the outlet of electrolysis machine connects, the outlet in middle pond connects with the water-in of anaerobic pond through three grades of sludge pumps and pipeline.
A chemicals dosing plant is arranged on the said flocculation tank.
Said electrolysis machine is provided with power supply and electrolyzer, and the electrode materials in the electrolyzer is a kind of in graphite, titanium, iron, aluminium, zinc, copper, lead, nickel, molybdenum, chromium and the nano-catalytic noble electrode; The top layer of said nano-catalytic noble electrode is coated with the MOX inertia catalyst coatings that crystal grain is 10～35nm; The substrate of said nano-catalytic noble electrode is titanium plate or plastic plate etc.; It is active that kind electrode has higher electrocatalytic reaction; Can reduce electrolytic overpotential significantly, reduce the generation of side reaction.
The technical scheme of utility model the utility model is: mud → flocculation sediment → electrolysis → contact reacts → be back to anaerobic pond recycle.Adopt organic composition in the dissolving of this technical scheme, the oxidized sludge, be back to anaerobic pond again and carry out Circulation, make that not only microorganism cells is killed in the mud; Cell walls is destroyed, and the tenuigenin stripping has improved the biodegradability of mud; Be convenient to the degraded of follow-up anaerobion, thereby reduce excess sludge production, and the tenuigenin of stripping also can be used as the carbon source of anaerobion; Replenish its nutritive substance; Thereby the increase biological activity improves the efficient of biological treatment of sewage, reaches the effect of mud, the dual processing of waste water.
Adopt this technological line to solve existing sludge treatment technical barrier, have following advantage:
1, the utility model adopts electrolysis to have following outstanding effect: the mud structure is destroyed in (1), and mud flco structure is changed, and accelerates sludge hydrolytic; (2) suppress and kill mikrobe and virus in the mud, can produce the radical that has strong oxidizing property in a large number in the electrolytic process, can not only penetrate and penetrate in the microbial cell; The dna replication dna of blocking-up mikrobe; Can also oxygenolysis microbial cell wall, the cellularstructure of destroy microorganisms makes tenuigenin enter into mud; Make and suppress sludge hydrolytic and killing microorganisms; On the other hand, mikrobes a large amount of in the mud is electronegative, under effect of electric field, loses the dead back sedimentation of biological activity thereby these electronegative mikrobes lose electronics; (3) deodorizing, the osmophore in multiple radical (chlorine [Cl], hydroxyl [OH] and oxygen [O]) the oxygenolysis mud that electrolysis produces is removed stench, improves the overall operation environment of mud decrement treatment process significantly; (4) decompose large amount of organic in the mud; Electrolysis makes macromole open loop or the chain rupture in the mud under galvanic action; Make the macromolecular substance of difficult for biological degradation be decomposed into small-molecule substance; Mud B/C is brought up to 0.3～0.6 from 0.1～0.2, strengthen the biodegradability of mud, make it be Institute of Micro-biology's utilization more easily; (5) decolouring; The colourity of having passed through second pond water outlet after several different methods such as biochemistry, materialization are handled is between 80～1000 times; General treatment process is difficult to further remove colourity, can the colourity of sewage be reduced to 16～32 times between 80～1000 times through electrolysis.
2, organic composition in dissolving, the oxidized sludge; Make the solidity material of difficult degradation become the dissolved matter that is prone to degraded; Be back to anaerobic pond again and carry out Circulation; Not only can be the anaerobion supplementary carbon source, utilized again by microbial metabolism, improve the efficient of biological treatment of sewage as its nutritive substance; And can be through the decomposition reaction of anaerobion, degraded is by cracking bacteriogenic dissolved matter, thereby reaches the raising wastewater treatment efficiency, reduces the dp of excess sludge production, realizes the recycling utilization of mud.
3, the regenerated using through mud reduces the total amount of mud, can eliminate the harm that mud possibly cause environment on the one hand, practices thrift transportation cost on the other hand, reduces and takes up an area of, and pays the landfill expense less.
Description of drawings
Fig. 1 is prior art sludge treatment and disposing technique schema;
Fig. 2 is that the structure of the said sewage plant sludge regenerated using of the utility model device embodiment is formed synoptic diagram.
Embodiment
The utility model is the design to the recycling utilization technology of sewage work's second pond mud of completion after the comparative study of composition, character and the existing processing scheme of existing sewage work second pond mud being goed deep into system; Through the utilization of electrolysis tech, form a kind of mud regenerated using devices and methods therefor.
Following embodiment will combine 2 pairs of the utility model of accompanying drawing to be further described.
Referring to Fig. 2, the said sewage plant sludge regenerated using of the utility model devices and methods therefor embodiment is provided with: one-level sludge pump 11, flocculation tank 1, secondary sludge pump 21, electrolysis machine 2, middle pond 3 and three grades of sludge pumps 31; Described one-level sludge pump 11 connects with the sludge outlet of sewage work's second pond; The outlet of one-level sludge pump 11 connects with the import of flocculation tank 1; The outlet of flocculation tank 1 connects through the import of secondary sludge pump 21 with electrolysis machine 2; The import in pond 3 in the middle of the outlet of electrolysis machine 2 connects, the outlet in middle pond 3 connects with the water-in of anaerobic pond through three grades of sludge pumps 31 and pipeline.A chemicals dosing plant is arranged on the said flocculation tank.
Provide the specific embodiment of sewage plant sludge regenerated using installation method below in conjunction with Fig. 2.
Embodiment 1
500 tons in the mud of certain 50000 ton per day sewage works daily output water ratio 99%, its sludge treatment designs as follows:
(1) 2 of one-level sludge pumps (1 usefulness 1 is equipped with), model: 100WL100-15-7.5 vertical sewage pump, Q=100m3/h, H=15m;
(2) flocculation tank 1: steel reinforced concrete cement pit, specification: 5 * 5 * 3m, useful volume 50m
3, design sludge retention time 2 hours has 3 m simultaneously
3One of iron trichloride chemicals dosing plant;
(3) 2 of secondary sludge pumps (1 usefulness 1 is equipped with), model: 80WL50-25-7.5, vertical sewage pump, Q=50m3/h, H=25m;
(4) 7 of nano-catalytic electrolysis machines (5 usefulness 2 are equipped with), model: BYDW-I type [Boying's production], unit sludge treatment ability 5 m
3/ h;
(5) pond is 2 in the middle of: steel reinforced concrete cement pit, specification: 10 * 6 * 3.5m, useful volume 150m
3, design sludge retention time 6 hours;
(6) three grades of 2 of sludge pumps (1 usefulness 1 is equipped with), model: 80WL50-25-7.5, vertical sewage pump, Q=50m3/h, H=25m.
Sludge treatment comprises the steps:
Step 1, flocculation sediment
The mud of second pond gets into flocculation tank 1 through pipeline and one-level sludge pump 11 in the sewage work; In flocculation tank 1, add ferric chloride Solution(38 through chemicals dosing plant; Dosage is a 300kg/ ton over dry mud, stirs 3 ~ 5 minutes, and the back that reacts completely pumps into electrolysis machine 2 through secondary sludge pump 21.
Above-mentioned iron(ic)chloride is flocculation agent.Flocculation agent can be aluminium salt, molysite, gather aluminium, gather iron, a kind of or any combination more than two kinds in organic polymer coargulator or the microbial flocculant; Said aluminium salt is Tai-Ace S 150, aluminum chloride or the combination of the two; Said molysite is any combination more than two kinds among ferric sulfate, ferrous sulfate, iron(ic)chloride or the three; The said aluminium that gathers is the two above combination arbitrarily among Poly aluminum Chloride (PAC), polyaluminium sulfate, polymer aluminium silicate or the three, and the said iron that gathers is the two above combination arbitrarily among poly-ferric chloride, bodied ferric sulfate, polymeric silicicacid iron or the three.
Step 2, electrolysis
Mud after the flocculation sediment processing is pumped into electrolysis machine 2 electrolysis through secondary sludge pump 21.The WV of said electrolysis machine 2 is 12V, and two interpolar voltages are for 3.5～8.0V, current density 150mA/cm
2, under galvanic action, the oxygen strong oxidizing property materials such as [O] of chlorine [Cl], hydroxyl [OH] and the status nascendi of the status nascendi that electrolysis produces both can destroy the mud structure, accelerated sludge hydrolytic, can suppress again and killing microorganisms; Simultaneously, the osmophore in can oxygenolysis mud is removed stench; In addition, electrolysis makes macromole open loop or the chain rupture in the mud, makes the macromolecular substance of difficult for biological degradation be decomposed into small-molecule substance, strengthens the biodegradability of mud, and coloured group, auxochrome group decolouring in the oxygenolysis sewage, reduces colourity.
Step 3, contact reacts
Pond 3 in the middle of mud after the electrolysis gets into, the radical that makes electrolysis produce further carries out contact reacts with mud, destroys the structure of mud; Crack the microbial cell wall, make mud flco structure change, material flows out in the extracellular microbial; Get into water, make the solidity material of difficult degradation become the dissolved matter that is prone to degraded, it is utilized for Institute of Micro-biology more easily; And then be back in the anaerobic pond through three grades of sludge pumps 31, recycle not only can be the anaerobion supplementary carbon source; Can be utilized again by microbial metabolism, improve the efficient of biological treatment of sewage; And can be through the decomposition reaction of anaerobion, degraded is by cracking bacteriogenic dissolved matter, thereby reaches the purpose that reduces excess sludge production.The mud leading indicator is seen table 1 before and after the electrolysis.
Mud leading indicator before and after table 1 electrolysis
Embodiment 2
100 tons in the mud of certain 10000 ton per day sewage works daily output water ratio 99%, sludge treatment comprises the steps:
Step 1, flocculation sediment
The mud of second pond gets into flocculation tank 1 through pipeline and one-level sludge pump 11 in the sewage work; In flocculation tank 1, add ferric chloride Solution(38 through chemicals dosing plant; Dosage is a 80kg/ ton over dry mud, stirs 3 ~ 5 minutes, and the back that reacts completely pumps into electrolysis machine 2 through secondary sludge pump 21.
Step 2, electrolysis
Mud after the flocculation sediment processing is pumped into electrolysis machine 2 electrolysis through secondary sludge pump 21.The WV of said electrolysis machine 2 is 12V, and two interpolar voltages are for 3.0～8.0V, current density 260mA/cm
2, under galvanic action, the oxygen strong oxidizing property materials such as [O] of chlorine [Cl], hydroxyl [OH] and the status nascendi of the status nascendi that electrolysis produces both can destroy the mud structure, accelerated sludge hydrolytic, can suppress again and killing microorganisms; Simultaneously, the osmophore in can oxygenolysis mud is removed stench; In addition, electrolysis makes macromole open loop or the chain rupture in the mud, makes the macromolecular substance of difficult for biological degradation be decomposed into small-molecule substance, strengthens the biodegradability of mud, and coloured group, auxochrome group decolouring in the oxygenolysis sewage, reduces colourity.
Step 3, contact reacts
Pond 3 in the middle of mud after the electrolysis gets into, the radical that makes electrolysis produce further carries out contact reacts with mud, destroys the structure of mud; Crack the microbial cell wall, make mud flco structure change, material flows out in the extracellular microbial; Get into water, make the solidity material of difficult degradation become the dissolved matter that is prone to degraded, it is utilized for Institute of Micro-biology more easily; And then be back in the anaerobic pond through three grades of sludge pumps 31, recycle not only can be the anaerobion supplementary carbon source; Can be utilized again by microbial metabolism, improve the efficient of biological treatment of sewage; And can be through the decomposition reaction of anaerobion, degraded is by cracking bacteriogenic dissolved matter, thereby reaches the purpose that reduces excess sludge production.The mud leading indicator is seen table 2 before and after the electrolysis.
Mud leading indicator before and after table 2 electrolysis
Embodiment 3
600 tons in the mud of certain 30000 ton per day sewage works daily output water ratio 98%, sludge treatment comprises the steps:
Step 1, flocculation sediment
The mud of second pond gets into flocculation tank 1 through pipeline and one-level sludge pump 11 in the sewage work; In flocculation tank 1, add ferric chloride Solution(38 through chemicals dosing plant; Dosage is a 200kg/ ton over dry mud, stirs 3 ~ 5 minutes, and the back that reacts completely pumps into electrolysis machine 2 through secondary sludge pump 21.
Step 2, electrolysis
Mud after the flocculation sediment processing is pumped into electrolysis machine 2 electrolysis through secondary sludge pump 21.The WV of said electrolysis machine 2 is 8V, and two interpolar voltages are for 3.0～8.0V, current density 120mA/cm
2, under galvanic action, the oxygen strong oxidizing property materials such as [O] of chlorine [Cl], hydroxyl [OH] and the status nascendi of the status nascendi that electrolysis produces both can destroy the mud structure, accelerated sludge hydrolytic, can suppress again and killing microorganisms; Simultaneously, the osmophore in can oxygenolysis mud is removed stench; In addition, electrolysis makes macromole open loop or the chain rupture in the mud, makes the macromolecular substance of difficult for biological degradation be decomposed into small-molecule substance, strengthens the biodegradability of mud, and coloured group, auxochrome group decolouring in the oxygenolysis sewage, reduces colourity.
Step 3, contact reacts
Pond 3 in the middle of mud after the electrolysis gets into, the radical that makes electrolysis produce further carries out contact reacts with mud, destroys the structure of mud; Crack the microbial cell wall, make mud flco structure change, material flows out in the extracellular microbial; Get into water, make the solidity material of difficult degradation become the dissolved matter that is prone to degraded, it is utilized for Institute of Micro-biology more easily; And then be back in the anaerobic pond through three grades of sludge pumps 31, recycle not only can be the anaerobion supplementary carbon source; Can be utilized again by microbial metabolism, improve the efficient of biological treatment of sewage; And can be through the decomposition reaction of anaerobion, degraded is by cracking bacteriogenic dissolved matter, thereby reaches the purpose that reduces excess sludge production.The mud leading indicator is seen table 3 before and after the electrolysis.
Mud leading indicator before and after table 3 electrolysis
Claims (4)
1. a sewage plant sludge regenerated using device is characterized in that being provided with one-level sludge pump, flocculation tank, secondary sludge pump, electrolysis machine, middle pond and three grades of sludge pumps; The import of described flocculation tank connects with the sludge outlet of sewage work second pond through pipeline and one-level sludge pump; The outlet of flocculation tank connects with the import of electrolysis machine through the secondary sludge pump; The import in pond in the middle of the outlet of electrolysis machine connects, the outlet in middle pond connects with the water-in of anaerobic pond through three grades of sludge pumps and pipeline.
2. a kind of sewage plant sludge regenerated using device as claimed in claim 1 is characterized in that a chemicals dosing plant is arranged on the said flocculation tank.
3. a kind of sewage plant sludge regenerated using device as claimed in claim 1; It is characterized in that said electrolysis machine is provided with power supply and electrolyzer, the electrode materials in the electrolyzer is a kind of in graphite, titanium, iron, aluminium, zinc, copper, lead, nickel, molybdenum, chromium and the nano-catalytic noble electrode.
4. like claim 1 or 3 described a kind of sewage plant sludge regenerated using devices; The top layer that it is characterized in that said nano-catalytic noble electrode is coated with the MOX inertia catalyst coatings that crystal grain is 10～35nm, and the substrate of said nano-catalytic noble electrode is titanium plate or plastic plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200751276U CN202594925U (en) | 2012-02-29 | 2012-03-02 | Sludge regeneration and utilization device of sewage plant |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210048612.9 | 2012-02-29 | ||
| CN201210048612 | 2012-02-29 | ||
| CN2012200751276U CN202594925U (en) | 2012-02-29 | 2012-03-02 | Sludge regeneration and utilization device of sewage plant |
Publications (1)
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|---|---|
| CN202594925U true CN202594925U (en) | 2012-12-12 |
Family
ID=46520997
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| CN2012200751276U Withdrawn - After Issue CN202594925U (en) | 2012-02-29 | 2012-03-02 | Sludge regeneration and utilization device of sewage plant |
| CN2012100526840A Expired - Fee Related CN102603133B (en) | 2012-02-29 | 2012-03-02 | Regeneration and utilization device and method thereof for sludge from sewage plant |
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| CN2012100526840A Expired - Fee Related CN102603133B (en) | 2012-02-29 | 2012-03-02 | Regeneration and utilization device and method thereof for sludge from sewage plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603133A (en) * | 2012-02-29 | 2012-07-25 | 波鹰(厦门)科技有限公司 | Regeneration and utilization device and method thereof for sludge from sewage plant |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553286B (en) * | 2013-10-22 | 2015-12-09 | 沈阳建筑大学 | The sludge reduction method that a kind of electrochemistry/ClO 2 catalyzed oxidation is coupled |
| CN105036506A (en) * | 2015-09-06 | 2015-11-11 | 上海隆越科技有限公司 | Sludge treatment device and treatment method thereof |
| CN105174676B (en) * | 2015-09-30 | 2017-09-22 | 沈阳建筑大学 | Electric Fenton source sludge reduction method and system based on electrochemistry sludge pretreatment |
| CN108689565A (en) * | 2018-06-29 | 2018-10-23 | 浙江钙科机械设备有限公司 | A kind of quick sludge treating agent |
| CN110937768B (en) * | 2018-09-21 | 2022-07-01 | 香港科技大学 | Method for treating sludge and deodorizing method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005125251A (en) * | 2003-10-24 | 2005-05-19 | Kurita Water Ind Ltd | Water treatment method and water treatment apparatus |
| CN101607773A (en) * | 2008-06-20 | 2009-12-23 | 淄博济维泽化工有限公司 | The treatment process of chlorinated polyethylene wastewater |
| CN201962167U (en) * | 2010-12-31 | 2011-09-07 | 山东国瑞环保产业有限公司 | Waste water treatment device |
| CN102276117A (en) * | 2011-07-21 | 2011-12-14 | 波鹰(厦门)科技有限公司 | Treatment device and method for garbage percolate |
| CN202594925U (en) * | 2012-02-29 | 2012-12-12 | 波鹰(厦门)科技有限公司 | Sludge regeneration and utilization device of sewage plant |
-
2012
- 2012-03-02 CN CN2012200751276U patent/CN202594925U/en not_active Withdrawn - After Issue
- 2012-03-02 CN CN2012100526840A patent/CN102603133B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603133A (en) * | 2012-02-29 | 2012-07-25 | 波鹰(厦门)科技有限公司 | Regeneration and utilization device and method thereof for sludge from sewage plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102603133A (en) | 2012-07-25 |
| CN102603133B (en) | 2013-08-28 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20121212 Effective date of abandoning: 20130828 |
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| RGAV | Abandon patent right to avoid regrant |