CN205473290U - A comprehensive control system for urban lake pollution silt - Google Patents
A comprehensive control system for urban lake pollution silt Download PDFInfo
- Publication number
- CN205473290U CN205473290U CN201620173268.XU CN201620173268U CN205473290U CN 205473290 U CN205473290 U CN 205473290U CN 201620173268 U CN201620173268 U CN 201620173268U CN 205473290 U CN205473290 U CN 205473290U
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- Prior art keywords
- mud
- silt
- sewage
- pond
- lake
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- 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.)
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- 239000010865 sewage Substances 0.000 claims abstract description 42
- 238000007711 solidification Methods 0.000 claims abstract description 17
- 230000008023 solidification Effects 0.000 claims abstract description 17
- 238000012546 transfer Methods 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 8
- 239000006228 supernatant Substances 0.000 claims abstract description 4
- 239000010802 sludge Substances 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 29
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 238000007596 consolidation process Methods 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000012535 impurity Substances 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 8
- 238000001556 precipitation Methods 0.000 claims description 7
- 239000010841 municipal wastewater Substances 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 5
- 238000005189 flocculation Methods 0.000 claims description 3
- 230000016615 flocculation Effects 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 238000007689 inspection Methods 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 238000006297 dehydration reaction Methods 0.000 abstract description 8
- 230000018044 dehydration Effects 0.000 abstract description 7
- 230000033228 biological regulation Effects 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract 2
- 238000010923 batch production Methods 0.000 abstract 1
- 238000000265 homogenisation Methods 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000004746 geotextile Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 231100000614 poison Toxicity 0.000 description 3
- 230000007096 poisonous effect Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- -1 pipeline Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The utility model relates to a comprehensive control system for urban lake pollution silt, belong to city ecological environment protection field, conveying system is shifted including silt to this design, processing system is concretied in the silt dehydration and solid -state mud cake utilizes the system, river course lake pollution silt in urban area passes through silt transfer conveying system and shifts the head end silt edulcoration pond carrying to processing system is concretied in the silt dehydration, receive pollution silt to pass through the silt equalizing basin, silt homogenization pond, the back is handled to sheet frame filter -pressing separating centrifuge, change into to satisfying the national regulation, the solid -state mud cake that rules required moisture content <= 40% is according to standard utilization, the sewage supernatant handled through silt edulcoration pond, silt equalizing basin, silt solidification pond and the sewage filtrating of sheet frame filter -pressing separating centrifuge, sewage up to standard after handle in terminal sewage treatment pond emits into municipal sewage pipe network system, and this design can be according to quantity, the pollution degree of lake silt, sets up nearby to handle among a small circle, batch production continuity of operation, the treatment effeciency is high to stop secondary pollution.
Description
Technical field
A kind of comprehensive treatment system for urban lake polluted sludge of this utility model, belongs to urban ecology ring
Protection field, border.
Background technology
Urban lake mud is by the integrated solid material in city domestic sewage or industrial wastewater, is sunken to city
District's bottom mud in lake and the water content that formed are more than liquid limit, the void ratio heterogeneous body viscosity more than or equal to 1.5
Soil, this urban lake mud includes high-load organic matter and fines pollutant.According to bottom mud in lake
Matrix lithological characteristic and sense organ degree, silt from the bottom of lake can be divided into pollution layer, transition zone, just from top to bottom
Often three layer of layer, wherein pollution layer is the main accumulation place that Lu Yuanxing enters lake pollutant, is lake pollution
Primary pollution source.Therefore, the process to urban lake mud be directly connected to urban lake from net energy
Power and the lifting of Urban Water Environment, if mishandling to urban lake mud, it would be possible to would pollute
Propagate or secondary pollution.At present, the main method processing lake pollution mud both at home and abroad is as follows:
1) natural-dehydration seasoning
This method is that the silt from the bottom of lake excavated is stacked open area, utilizes nature light, convected air to be allowed to certainly
So dehydration.The major defect of this method is: dewatering efficiency is low, the longest, and occupied ground is big, by extraneous shadow
Ring very big, particularly lack harmless treatment program, there is pollution transportation risk, surrounding enviroment are affected
The biggest.
2) vacuum method
This method be the silt from the bottom of lake of excavation is placed in process pond in, lay in pond anti-seepage geotextile, pipeline,
Sand filter film and vacuum pump, to the mud evacuation processed in pond, utilize vacuum pressure and mud itself certainly
Weigh the method to sludge dewatering.The major defect of this method is: easily causes the blocking of geotextiles aperture, causes
Make mud for a long time cannot dehydrate, and there is the potential risk of pollution transportation.
3) geotextile tube bag method
This method is high-moisture percentage mud or mud to be squeezed in geotextile tube bag, utilize geotextile tube bag water penetration and
Deadweight reaches the engineering method of mud densification and dehydration.
The major defect of this method is: many urban lake polluted sludges big for clay content, organic, holds
Easily cause the blocking of pipe racks aperture, cause mud for a long time cannot dehydrate, and because mud not being had
Pest matter carries out sealing and harmless treatment, there is the potential risk of pollution transportation, long construction period, needs
Take a large amount of place for a long time.
4) mechanical dehydration method
The equipment that traditional mechanical dehydration uses mainly has centrifuge, belt filter press.It is said that in general, this
Method can only slough the surface moisture of mud, and the mud moisture content after process is the highest, costs and poor dehydration results, energy
Consumption is big, and because not consolidating mud and harmless treatment, there is secondary pollution risk.
Therefore, along with the needs of city environmental protection development, at the science of the polluted sludge of urban lake
Reason and disposal, become research and the important topic paid close attention to.
Utility model content
The purpose of this utility model is to provide a kind of comprehensive control for urban rives lake pollution mud
System, for urban rives, the high organic content of lake silt and fines pollutant characteristic, will
Contaminated mud is transferred to sludge dewatering and solidifying processing system and processes, and makes this mud be converted into and meets now
Row national regulation requires the solid-state mud cake of moisture content≤40%, is used；Its waste water separated meets " dirty
Water comprehensive discharge standard " three grades of discharge standards of (GB8978-1996), enter Municipal sewage conduct,
Enter follow-up sewage treatment plant to process, thus realize the purification to urban rives lake and environmental conservation
Requirement.
This utility model purpose is by realizing with technical scheme
A kind of comprehensive treatment system for urban rives lake pollution mud of this utility model, including mud
That shifts induction system, sludge dewatering consolidation process system and solid-state mud cake utilizes system, and described mud takes off
Water consolidation process system, divides including mud remove impurity pond, mud regulating reservoir, sludge solidification pond, filter press
Disembark, sewage balancing reservoir, treatment tank；Urban rives lake pollution mud is by mud transfer conveying
System transfer is delivered to the head end mud remove impurity pond of sludge dewatering consolidation process system, and polluted sludge is by becoming silted up
After mud regulating reservoir, mud balancing reservoir, filter press separator for processing, be converted into meet existing national regulation,
The solid-state mud cake of regulatory requirements moisture content≤40%, is utilized by code requirement；By mud remove impurity pond, silt
Sewage supernatant and the sewage passing through filter press seperator that mud regulating reservoir, sludge solidification pond process are filtered
Liquid, is processed by the treatment tank of end and meets " integrated wastewater discharge standard " (GB8978-1996)
The sewage of three grades of discharge standards, its discharge outlet enter municipal wastewater pipe network system.
Described remove impurity pond is provided with grid mechanism, to intercept the solids removing greater particle size.
The quantity of described mud regulating reservoir is 1-3, and mud regulating reservoir is provided with mechanical agitator and flocculant
Adding pump, flocculant is 1:500-600 with the weight ratio of mud.
Described sludge solidification pond is provided with soil-solidified-agent feed bin, and its soil-solidified-agent dosage accounts in balancing reservoir
The 5%～8% of mud weight, by soil-solidified-agent and slurry reaction, is formed not on sludge granules surface
Reversible condensation hardening shell, effectively reduces the activity of wherein polluter, it is achieved to the huge sum of money in mud
Belong to and the solidification of poisonous and harmful substance and stable.
The feed pressure 1.0MPa of described filter press seperator, squeeze pressure 1.0MPa, output mud cake
Thickness is 33mm ± 2mm, meets relevant specification of country and requires and environmentally-friendly sanitary requirement.
The top of the treatment tank of described end has sewage effluent, bottom to have slag-drip opening, and is furnished with wadding
Solidifying agent adder, the sewage mixed by sewage balancing reservoir in treatment tank through flocculation, precipitation process,
Its sewage is entered municipal wastewater pipe network system by sewage effluent, and its precipitation fine slag is passed through pipeline by slag-drip opening
Feed back to sludge solidification pond.
Described mud transfer induction system, dark including cutter suction dredger and buoy dreding pipeline or embedded type
Pipe.
Described solid-state mud cake utilizes system, including the relevant criterion detection up to standard of solid-state mud cake and answers by specification
With.
This utility model comprehensive treatment system is to include the transfer conveying of municipal pollution mud, sludge dewatering consolidation
Process, the utilization of the harmless solid-state mud cake that standardizes and the tail end sewage discharge being connected with city planting ductwork exist
The processing system of interior complete set, the environment-friendly type sludge curing agent that sludge dewatering consolidation process uses is to silt
In mud, harmful substance can carry out efficient passivation and sealing is formed as solid-state mud cake, and the solid-state mud cake formed is full
Foot " urban wastewater treatment firm sludge treatment afforestation shale " (GB/T 23486-2009) and " city
Town sludge of sewage treatment plant disposes agricultural shale " (CJ/T 309-2009) standard-required, and return in engineering
Banket, gardens soil, landfill yard overburden soil and the improvement urban construction aspect such as soil are utilized effectively；
The sewage collected by sludge dewatering consolidation process system, at its tail end outlet through pipeline and city planting ductwork
Connect, enter follow-up sewage treatment plant and process；This utility model sludge dewatering consolidation process system can basis
The quantity of lake silt, pollution level, treatment in accordance with local conditions arranges little scope Treatment stations nearby, completes at mud
After reason, instant dismounting and cleaning Treatment stations, and recover former state, maneuverability, treatment effeciency is high, processes
The continuous factory operation of process, workmen is not directly contacted with mud；Effectively stop secondary pollution；Additionally,
Dewatering and coagulating processing system directly can be docked with multiple dredging scheme, compatible strong.This utility model pair
The improvement of urban rives lake silt and notable to the city ecological environment protection effect.
Accompanying drawing explanation
Fig. 1 this utility model sludge dewatering consolidation process flow chart
Detailed description of the invention
Further illustrate how this utility model is implemented in conjunction with drawings and Examples
A kind of comprehensive treatment system for urban rives lake pollution mud of this utility model, including mud
That shifts induction system, sludge dewatering consolidation process system and solid-state mud cake utilizes system, and described mud takes off
Water consolidation process system, including mud remove impurity pond 1, mud regulating reservoir 2, sludge solidification pond 3, sheet frame pressure
Filter seperator 4, sewage balancing reservoir 5, treatment tank 6, urban rives lake pollution mud is by becoming silted up
Mud transfer induction system transfer is delivered to the head end mud remove impurity pond 1 of sludge dewatering consolidation process system, is subject to
After polluted sludge is processed by mud regulating reservoir 2, sludge solidification pond 3, filter press seperator 4, turn
Chemical conversion is the solid-state mud cake meeting existing national regulation requirement moisture content≤40%, by specialty specification requirement profit
With；By mud remove impurity pond 1, mud regulating reservoir 2, sludge solidification pond 3 process sewage supernatant and
The sewage filtrate separated by filter press seperator 4, through the combined sewage of sewage balancing reservoir 5, then
After process by end treatment tank 6, meet " integrated wastewater discharge standard " (GB8978-1996)
Three grades of discharge standards, it is dirty that the sewage after process enters municipal administration from the discharge outlet of the treatment tank 6 of end
Grid system.
Described remove impurity pond 1 is provided with grid mechanism, to intercept the solids removing greater particle size.
The quantity of described mud regulating reservoir 2 is 1-3, and mud regulating reservoir is provided with mechanical agitator and flocculation
Agent adds pump, and flocculant is 1:500-600 with the weight ratio of mud, and flocculant is conventional polyaluminium
Aluminum.
Described sludge solidification pond 3 is provided with soil-solidified-agent feed bin, and soil-solidified-agent dosage accounts in balancing reservoir
The 5%～8% of mud weight, the soil-solidified-agent added meets Ministry of Construction's standard " soil-solidified-agent "
(CJ/T3073-1998) requirement, after being sufficiently stirred for homogenizing in solidifying pool, anti-with mud by firming agent
Should, irreversible condensation hardening shell is formed on sludge granules surface, after hardening, mud has just possessed necessarily
Structural strength；The condensation hardening shell being wrapped in sludge granules can effectively reduce the work of wherein polluter
Property, thus realize the heavy metal in mud and the solidification of poisonous and harmful substance and stablize.
The feed pressure 1.0MPa of described filter press seperator 4, squeeze pressure 1.0MPa, output mud
Cake thickness is 33mm ± 2mm, meets relevant specification of country and requires and environmentally-friendly sanitary requirement, in mud cake
Heavy metal and the solidification of poisonous and harmful substance and stable degree are high, without secondary precipitation, and can be as engineering
Backfill soil, agricultural, gardens soil, refuse landfill sealing overburden soil, construction material are used.
The top of the treatment tank 6 of described end has sewage effluent, bottom to have slag-drip opening, and is furnished with
Flocculant adder, the combined sewage through sewage balancing reservoir 5 enters treatment tank 6, by flocculating,
After precipitation process, its sewage is entered municipal wastewater pipe network system by sewage effluent, and its precipitation fine slag is by arranging
Cinder notch feeds back to sludge solidification pond 3 by pipeline.
Described mud transfer induction system, dark including cutter suction dredger and buoy dreding pipeline or embedded type
Pipe.
Described solid-state mud cake utilizes system, including the solid-state mud cake to output relevant criterion detection up to standard and
Apply by specification；Described relevant criterion is " urban wastewater treatment firm sludge treatment afforestation mud
Matter " (GB/T 23486-2009) and " the agricultural shale of urban wastewater treatment firm sludge treatment " (CJ/T
309-2009)。
Embodiment 1: this utility model application in Moshui Lake of Wuhan comprehensive improvement dredging work
Mud 24.536 × 10 is removed in side, the Moshui Lake of Wuhan southeast, Hanyang District, Wuhan City Zone4m3, mud passes through spoil disposal
Pipe is delivered to the sludge dewatering consolidation process system of Treatment stations, by the dewatering and coagulating of the most above-mentioned embodiment
After process, being converted into the solid-state mud cake of moisture content≤40%, mud cake outward transport utilizes as backfill soil landfill；
Processed by end treatment tank and meet " integrated wastewater discharge standard " (GB8978-1996) three grades of rows
Put the sewage of standard, enter municipal wastewater pipe network system from its end discharge outlet.Use this utility model pair
City Moshui Lake of Wuhan sludge treatment, waters own to Moshui Lake of Wuhan purifies and changes its periphery city ecological environment
It is apt to and lifting effect is notable.
Claims (8)
1. the comprehensive treatment system for urban rives lake pollution mud, it is characterised in that bag
Include the system that utilizes of mud transfer induction system, sludge dewatering consolidation process system and solid-state mud cake, described
Sludge dewatering consolidation process system, including mud remove impurity pond, mud regulating reservoir, sludge solidification pond, sheet frame
Pressure-filtering separating machine, sewage balancing reservoir, treatment tank；Urban rives lake pollution mud is turned by mud
Move induction system transfer and be delivered to the head end mud remove impurity pond of sludge dewatering consolidation process system, polluted sludge
After mud regulating reservoir, mud balancing reservoir, filter press separator for processing, it is converted into and meets existing state
Family specification, the solid-state mud cake of regulatory requirements moisture content≤40%, utilized by code requirement；Removed by mud
Sewage supernatant that miscellaneous pond, mud regulating reservoir, sludge solidification pond process and by filter press seperator
Sewage filtrate, is processed by the treatment tank of end and meets " integrated wastewater discharge standard "
(GB8978-1996) sewage of three grades of discharge standards, is entered municipal wastewater pipe network system by its discharge outlet
System.
A kind of comprehensive control for urban rives lake pollution mud the most according to claim 1
System, it is characterised in that remove impurity pond is provided with grid mechanism.
A kind of comprehensive control for urban rives lake pollution mud the most according to claim 1
System, it is characterised in that the quantity of mud regulating reservoir is 1-3, and mud regulating reservoir is provided with machinery and stirs
Mix device and flocculant concentration pump.
A kind of comprehensive control for urban rives lake pollution mud the most according to claim 1
System, it is characterised in that sludge solidification pond is provided with soil-solidified-agent feed bin.
A kind of comprehensive control for urban rives lake pollution mud the most according to claim 1
System, it is characterised in that the feed pressure 1.0MPa of filter press seperator, squeeze pressure 1.0MPa,
Discharging cake thickness is generally 33mm ± 2mm.
A kind of comprehensive control for urban rives lake pollution mud the most according to claim 1
System, it is characterised in that the top of the treatment tank of end has sewage effluent, bottom to have deslagging
Mouthful, and it is furnished with flocculant adder, the sewage warp in treatment tank mixed by sewage balancing reservoir
Flocculation, precipitation process, its sewage is entered municipal wastewater pipe network system by sewage effluent, and its precipitation is thin
Slag is fed back to sludge solidification pond by slag-drip opening by pipeline.
A kind of comprehensive control for urban rives lake pollution mud the most according to claim 1
System, it is characterised in that mud transfer induction system, including cutter suction dredger and buoy dreding pipeline
Or embedded type hidden pipe.
A kind of comprehensive control for urban rives lake pollution mud the most according to claim 1
System, it is characterised in that solid-state mud cake utilizes system, including the relevant criterion inspection up to standard of solid-state mud cake
Survey and apply by specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620173268.XU CN205473290U (en) | 2016-03-07 | 2016-03-07 | A comprehensive control system for urban lake pollution silt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620173268.XU CN205473290U (en) | 2016-03-07 | 2016-03-07 | A comprehensive control system for urban lake pollution silt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205473290U true CN205473290U (en) | 2016-08-17 |
Family
ID=56658549
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620173268.XU Expired - Fee Related CN205473290U (en) | 2016-03-07 | 2016-03-07 | A comprehensive control system for urban lake pollution silt |
Country Status (1)
| Country | Link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731743A (en) * | 2016-03-07 | 2016-07-06 | 武汉市政工程设计研究院有限责任公司 | Comprehensive treatment system for urban lake pollution sludge |
| CN107938737A (en) * | 2017-11-15 | 2018-04-20 | 中交天津港航勘察设计研究院有限公司 | A kind of dystrophication sediment dredging cures disposal continuous treatment method |
| CN109662009A (en) * | 2018-12-21 | 2019-04-23 | 中建三局绿色产业投资有限公司 | A kind of set technique of sludge treatment disposition |
| CN112661386A (en) * | 2020-12-31 | 2021-04-16 | 广东大禹水利建设有限公司 | Reservoir sludge dewatering and curing method |
| CN115521024A (en) * | 2022-09-23 | 2022-12-27 | 江苏东方生态清淤工程有限公司 | Algae sludge online mechanical drying and residual water purification system and method |
-
2016
- 2016-03-07 CN CN201620173268.XU patent/CN205473290U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731743A (en) * | 2016-03-07 | 2016-07-06 | 武汉市政工程设计研究院有限责任公司 | Comprehensive treatment system for urban lake pollution sludge |
| CN107938737A (en) * | 2017-11-15 | 2018-04-20 | 中交天津港航勘察设计研究院有限公司 | A kind of dystrophication sediment dredging cures disposal continuous treatment method |
| CN109662009A (en) * | 2018-12-21 | 2019-04-23 | 中建三局绿色产业投资有限公司 | A kind of set technique of sludge treatment disposition |
| CN112661386A (en) * | 2020-12-31 | 2021-04-16 | 广东大禹水利建设有限公司 | Reservoir sludge dewatering and curing method |
| CN115521024A (en) * | 2022-09-23 | 2022-12-27 | 江苏东方生态清淤工程有限公司 | Algae sludge online mechanical drying and residual water purification system and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 |
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| CF01 | Termination of patent right due to non-payment of annual fee |