CN109293206A - A method of it is dry for channel cleanout dredging and mud - Google Patents
A method of it is dry for channel cleanout dredging and mud Download PDFInfo
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- CN109293206A CN109293206A CN201811530602.2A CN201811530602A CN109293206A CN 109293206 A CN109293206 A CN 109293206A CN 201811530602 A CN201811530602 A CN 201811530602A CN 109293206 A CN109293206 A CN 109293206A
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- sludge
- river
- flocculant
- flocculation basin
- dredging
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000010802 sludge Substances 0.000 claims abstract description 86
- 239000000463 material Substances 0.000 claims abstract description 31
- 239000002002 slurry Substances 0.000 claims abstract description 27
- 238000005189 flocculation Methods 0.000 claims abstract description 26
- 230000016615 flocculation Effects 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000012065 filter cake Substances 0.000 claims abstract description 17
- 230000007613 environmental effect Effects 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 238000005192 partition Methods 0.000 claims abstract description 7
- 238000005070 sampling Methods 0.000 claims abstract description 7
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 26
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 19
- 230000010355 oscillation Effects 0.000 claims description 14
- 239000010881 fly ash Substances 0.000 claims description 13
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 13
- 229920002401 polyacrylamide Polymers 0.000 claims description 13
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 12
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 239000000920 calcium hydroxide Substances 0.000 claims description 8
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 8
- 238000012216 screening Methods 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 230000001376 precipitating effect Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000004062 sedimentation Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 230000003311 flocculating effect Effects 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000036284 oxygen consumption Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
- E02B3/023—Removing sediments
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Ocean & Marine Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of methods dry for channel cleanout dredging and mud, belong to environmental technology field, are reconnoitred to river, sampling and measuring, analyze the distribution situation of sludge in river；According to measurement result, partition distribution is carried out to river；Sludge in each layer in river is removed using ecological dredging method, the sludge slurries being collected into are filtered, flocculation sedimentation and centrifuge separation etc., big material, rough material, particulate sludge and clean water body are filtered out, particulate sludge is fabricated to filter cake, and clean water body is transmitted back in river.The method of the present invention combination river situation, subregion and sludge blanket distinguish processing, and mechanization degree is high, greatly improve the efficiency of river purification；In addition, the water content of entrucking sludge is very low, it is readily transported.
Description
Technical field
The invention belongs to environmental technology field more particularly to a kind of methods dry for channel cleanout dredging and mud.
Background technique
With the development of city size and social economy, city river is by different degrees of ground contamination.It is precipitated in river sludge
There is an a large amount of organic and inorganic pollutant, this leads to the sharply reduction of dissolved oxygen in water body, along with some of the contaminants, rubbish
Toxic action, makes animals and plants mortality in river water body, and the river water body ecosystem is seriously damaged.
Currently, the method for domestic channel cleanout dredging mainly uses artificial erosion and deposition: cofferdam of building a dam is carried out to river both ends,
River water drains in dam, washes away followed by high-pressure hydraulic pump to mud, washes away rear mud and concentrates first and is put in one section of river
In, it is handled finally by mud of technological requirement outward transport.However, there are many deficiencies for this method: 1) it is great in constructing amount, it is at high cost；2) mechanical
Change degree is low, low efficiency；3) pollution of river situation is not analyzed, river difference sludge blanket does not distinguish processing；3) dirty
Slurry liquid water content is higher, carrys out many difficulties to conveyer belt.
Summary of the invention
Present invention aims to overcome that the shortcomings of the prior art, and provide a kind of for channel cleanout dredging and mud
Dry method, this method combination river situation, subregion and sludge blanket distinguish processing, and mechanization degree is high, mention significantly
The efficiency of high river purification；In addition, the water content of entrucking sludge is very low, it is readily transported.
To achieve the above object, the technical scheme adopted by the invention is as follows: one kind is dry for channel cleanout dredging and mud
Method comprising following steps:
S1) river is reconnoitred, sampling and measuring, analyzes the distribution situation of sludge in river；According to measurement result, to river
Road carries out partition distribution；Suction digging ship is twisted using environmental protection using ecological dredging method and removes sludge in each layer in river respectively, environmental protection
It twists suction digging ship and is collected into the first sludge slurries；
Preferably, sludge includes bottom sludge and excessive layer sludge in each layer in river；Ecological dredging will be slapped accurately when constructing
The technique for holding " sealing inhale dig ", " speed limit excavations ", " subregion excavations " and " thin layer excavation " requires, to reach environment-protective desilting, accurately
The purpose of dredging；
S2) that the first sludge slurry liquid is pumped to the first shaking screen on riverbank is online, screens out big material and second
Sludge slurries；The second sludge slurry liquid is pumped in flocculation basin, flocculant is added into the flocculation basin, is stood after stirring
Until sludge settling；By upper layer liquid pump in flocculation basin into cyclone, the water body filtered out is transmitted back in river；It will be in flocculation basin
Sludge settling and the sludge pumping of cyclone screening are online to the second shaking screen, screen out rough material and particulate sludge；It will be described
Particulate sludge pump is fabricated to filter cake into filter press；
S3 the big material, rough material and filter cake) are subjected to entrucking by belt conveyor.
As an improvement of the above technical solution, in step sl, river is divided by the region 30m × 30m.Side of the present invention
The size that method control area divides, more preferably distinguishes processing according to each region.
As an improvement of the above technical solution, in step s 2, the aperture of the first oscillation sieve is 18mm.
As an improvement of the above technical solution, in step s 2, the aperture of the second oscillation sieve is 6mm.
The present invention limits the aperture of the first oscillation sieve and the second oscillation sieve, and the material screening of different-grain diameter is made to come,
So that particulate sludge is more preferably fabricated to filter cake.
As an improvement of the above technical solution, in step s 2, the flocculant by magnesium chloride, calcium hydroxide, sodium carbonate,
Polyacrylamide, Soluble Fiber and flyash composition.
As a further improvement of the above technical scheme, in step s 2, the flocculant is (1~3) by mass ratio: (1
~3): (0.5~1): (0.2~0.8): (1~2): the magnesium chloride of (3~6), calcium hydroxide, sodium carbonate, polyacrylamide, can
Soluble fiber and flyash composition.When flocculant is (1~3): (1~3): (0.5~1): (0.2~0.8) by mass ratio: (1~
2): when magnesium chloride, calcium hydroxide, sodium carbonate, polyacrylamide, Soluble Fiber and the flyash of (3~6) form, flocculant
Flocculating effect it is preferable.
Further improvement as above-mentioned technical proposal, in step s 2, the flocculant are 2.6:2 by mass ratio:
Magnesium chloride, calcium hydroxide, sodium carbonate, polyacrylamide, Soluble Fiber and the flyash composition of 0.7:0.5:1.4:5.6.When
Flocculant by mass ratio is the magnesium chloride of 2.6:2:0.7:0.5:1.4:5.6, calcium hydroxide, sodium carbonate, polyacrylamide, solvable
Property fiber and flyash form when, the flocculating effect of flocculant is more preferable.
The beneficial effects of the present invention are: the present invention provides a kind of method dry for channel cleanout dredging and mud,
This method has the advantage that
1) river situation is combined, subregion and sludge blanket distinguish processing, greatly improve the efficiency of river purification；
2) mechanization degree is high, reduces the workload of employee；
3) by the first oscillation sieve, the second oscillation sieve, flocculation basin and cyclone, the dirt of different-grain diameter size is sieved
Mud, particulate sludge are more preferably fabricated to filter cake；The water content of entrucking sludge is very low, is readily transported；
4) flocculant is combined by multiple compounds, and collaboration improves the flocculating effect of flocculant；
5) purified water body can be transmitted back in river again in sludge slurries.
Specific embodiment
Purposes, technical schemes and advantages in order to better illustrate the present invention, below in conjunction with specific embodiment to the present invention
It is described further.
It should be understood that describing various information, but these information using term " first " and " second " in the present invention
It should not necessarily be limited by these terms, these terms are only used to for same type of information being distinguished from each other out.For example, not departing from the present invention
In the case where range, " first " information can also be referred to as " second " information, and similar, " second " information can also be referred to as
" first " information.
A kind of method dry for channel cleanout dredging and mud of the present invention comprising following steps:
S1) river is reconnoitred, sampling and measuring, analyzes the distribution situation of sludge in river；According to measurement result, to river
Road carries out partition distribution；Suction digging ship is twisted using environmental protection using ecological dredging method and removes sludge in each layer in river respectively, environmental protection
It twists suction digging ship and is collected into the first sludge slurries；
S2) that the first sludge slurry liquid is pumped to the first shaking screen on riverbank is online, screens out big material and the second sludge
Slurries；Second sludge slurry liquid is pumped in flocculation basin, flocculant is added into flocculation basin, is stood after stirring until sludge is heavy
It forms sediment；By upper layer liquid pump in flocculation basin into cyclone, the water body filtered out is transmitted back in river；By sludge settling in flocculation basin and
The sludge pumping of cyclone screening is online to the second shaking screen, screens out rough material and particulate sludge；By particulate sludge pump into pressure
In filter, it is fabricated to filter cake；
S3 big material, rough material and filter cake) are subjected to entrucking by belt conveyor.
Embodiment 1
The present embodiment provides a kind of methods dry for channel cleanout dredging and mud comprising following steps:
S1) river is reconnoitred, sampling and measuring, analyzes the distribution situation of sludge in river；According to measurement result, to river
Road carries out partition distribution；Suction digging ship is twisted using environmental protection using ecological dredging method and removes sludge in each layer in river respectively, environmental protection
It twists suction digging ship and is collected into the first sludge slurries；
S2) that the first sludge slurry liquid is pumped to the first shaking screen on riverbank is online, screens out big material and the second sludge
Slurries；Second sludge slurry liquid is pumped in flocculation basin, flocculant is added into flocculation basin, is stood after stirring until sludge is heavy
It forms sediment；By upper layer liquid pump in flocculation basin into cyclone, the water body filtered out is transmitted back in river；By sludge settling in flocculation basin and
The sludge pumping of cyclone screening is online to the second shaking screen, screens out rough material and particulate sludge；By particulate sludge pump into pressure
In filter, it is fabricated to filter cake；
S3 big material, rough material and filter cake) are subjected to entrucking by belt conveyor；
In step sl, river is divided by the region 30m × 30m；In step s 2, the aperture of the first oscillation sieve is
18mm, the aperture of the second oscillation sieve are 6mm, magnesium chloride, the hydrogen that flocculant is 2.6:2:0.7:0.5:1.4:5.6 by mass ratio
Calcium oxide, sodium carbonate, polyacrylamide, Soluble Fiber and flyash composition.
Embodiment 2
The present embodiment provides a kind of methods dry for channel cleanout dredging and mud comprising following steps:
S1) river is reconnoitred, sampling and measuring, analyzes the distribution situation of sludge in river；According to measurement result, to river
Road carries out partition distribution；Suction digging ship is twisted using environmental protection using ecological dredging method and removes sludge in each layer in river respectively, environmental protection
It twists suction digging ship and is collected into the first sludge slurries；
S2) that the first sludge slurry liquid is pumped to the first shaking screen on riverbank is online, screens out big material and the second sludge
Slurries；Second sludge slurry liquid is pumped in flocculation basin, flocculant is added into flocculation basin, is stood after stirring until sludge is heavy
It forms sediment；By upper layer liquid pump in flocculation basin into cyclone, the water body filtered out is transmitted back in river；By sludge settling in flocculation basin and
The sludge pumping of cyclone screening is online to the second shaking screen, screens out rough material and particulate sludge；By particulate sludge pump into pressure
In filter, it is fabricated to filter cake；
S3 big material, rough material and filter cake) are subjected to entrucking by belt conveyor；
In step sl, river is divided by the region 30m × 30m；In step s 2, the aperture of the first oscillation sieve is
18mm, the aperture of the second oscillation sieve are 6mm, flocculant by mass ratio be the magnesium chloride of 1:1:1:0.8:2:3, calcium hydroxide,
Sodium carbonate, polyacrylamide, Soluble Fiber and flyash composition.
Embodiment 3
The present embodiment provides a kind of methods dry for channel cleanout dredging and mud comprising following steps:
S1) river is reconnoitred, sampling and measuring, analyzes the distribution situation of sludge in river；According to measurement result, to river
Road carries out partition distribution；Suction digging ship is twisted using environmental protection using ecological dredging method and removes sludge in each layer in river respectively, environmental protection
It twists suction digging ship and is collected into the first sludge slurries；
S2) that the first sludge slurry liquid is pumped to the first shaking screen on riverbank is online, screens out big material and the second sludge
Slurries；Second sludge slurry liquid is pumped in flocculation basin, flocculant is added into flocculation basin, is stood after stirring until sludge is heavy
It forms sediment；By upper layer liquid pump in flocculation basin into cyclone, the water body filtered out is transmitted back in river；By sludge settling in flocculation basin and
The sludge pumping of cyclone screening is online to the second shaking screen, screens out rough material and particulate sludge；By particulate sludge pump into pressure
In filter, it is fabricated to filter cake；
S3 big material, rough material and filter cake) are subjected to entrucking by belt conveyor；
In step sl, river is divided by the region 30m × 30m；In step s 2, the aperture of the first oscillation sieve is
18mm, the aperture of the second oscillation sieve are 6mm, magnesium chloride, the hydroxide that flocculant is 3:3:0.5:0.2:1:6 by mass ratio
Calcium, sodium carbonate, polyacrylamide, Soluble Fiber and flyash composition.
Comparative example 1
This comparative example provides a kind of method dry for channel cleanout dredging and mud, and the difference with embodiment 1 exists
In: flocculant is made of magnesium chloride, sodium carbonate, polyacrylamide and the flyash that mass ratio is 3:0.5:1:6.
River disposition
It is desilted and dredged with 1 method of comparative example to certain river difference segmentation (30m × 30m) using the embodiment of the present invention 1
It is dried with mud, the result of processing are as follows:
1) 1 method of embodiment: before dredging, river water body COD (chemical oxygen consumption (COC)) is 220~240mg/L, after dredging, river
Road water body COD is 60~70mg/L, and big material, rough material and filter cake total moisture content are 12%；
1) 1 method of comparative example: before dredging, river water body COD (chemical oxygen consumption (COC)) is 190~200mg/L, after dredging, river
Road water body COD is 90~100mg/L, and big material, rough material and filter cake total moisture content are 17%.
It can be seen that the method dry for channel cleanout dredging and mud using the present invention, can purify river water body,
Reduce the water content of entrucking sludge；In addition, working as magnesium chloride, hydrogen that flocculant is 2.6:2:0.7:0.5:1.4:5.6 by mass ratio
When calcium oxide, sodium carbonate, polyacrylamide, Soluble Fiber and flyash form, the flocculating effect of flocculant is more preferable.
Finally, it should be noted that above embodiments protect the present invention to illustrate technical solution of the present invention
The limitation of range, although the invention is described in detail with reference to the preferred embodiments, those skilled in the art should be managed
Solution, can modify to technical solution of the present invention or replace on an equal basis, without departing from technical solution of the present invention essence and
Range.
Claims (7)
1. a kind of method dry for channel cleanout dredging and mud, which comprises the following steps:
S1) river is reconnoitred, sampling and measuring, analyzes the distribution situation of sludge in river；According to measurement result, to river into
The distribution of row partition；Suction digging ship is twisted using environmental protection using ecological dredging method and removes sludge in each layer in river respectively, environmental protection, which twists, inhales
Formula digs ship and is collected into the first sludge slurries；
S2) that the first sludge slurry liquid is pumped to the first shaking screen on riverbank is online, screens out big material and the second sludge
Slurries；The second sludge slurry liquid is pumped in flocculation basin, flocculant is added into the flocculation basin, after stirring stand until
Sludge settling；By upper layer liquid pump in flocculation basin into cyclone, the water body filtered out is transmitted back in river；By sludge in flocculation basin
Precipitating and the sludge pumping of cyclone screening are online to the second shaking screen, screen out rough material and particulate sludge；By the particulate
Sludge pump is fabricated to filter cake into filter press；
S3 the big material, rough material and filter cake) are subjected to entrucking by belt conveyor.
2. the method as described in claim 1, which is characterized in that in step sl, river is divided by the region 30m × 30m.
3. the method as described in claim 1, which is characterized in that in step s 2, the aperture of the first oscillation sieve is
18mm。
4. the method as described in claim 1, which is characterized in that in step s 2, the aperture of the second oscillation sieve is
6mm。
5. the method as described in claim 1, which is characterized in that in step s 2, the flocculant is by magnesium chloride, hydroxide
Calcium, sodium carbonate, polyacrylamide, Soluble Fiber and flyash composition.
6. method as claimed in claim 5, which is characterized in that in step s 2, the flocculant is (1~3) by mass ratio:
(1~3): (0.5~1): (0.2~0.8): (1~2): the magnesium chloride of (3~6), calcium hydroxide, sodium carbonate, polyacrylamide,
Soluble Fiber and flyash composition.
7. method as claimed in claim 6, which is characterized in that in step s 2, the flocculant is 2.6:2 by mass ratio:
Magnesium chloride, calcium hydroxide, sodium carbonate, polyacrylamide, Soluble Fiber and the flyash composition of 0.7:0.5:1.4:5.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811530602.2A CN109293206A (en) | 2018-12-13 | 2018-12-13 | A method of it is dry for channel cleanout dredging and mud |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811530602.2A CN109293206A (en) | 2018-12-13 | 2018-12-13 | A method of it is dry for channel cleanout dredging and mud |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082149A (en) * | 2019-05-28 | 2019-08-02 | 张瑜 | A kind of sludge sampler and dredging method with depth measurement and positioning function |
| CN111559766A (en) * | 2020-05-11 | 2020-08-21 | 陈键 | Method for improving and restoring water ecology for long time |
| CN111925083A (en) * | 2020-08-05 | 2020-11-13 | 兴源环境科技股份有限公司 | Dredged sludge solidification method |
| CN112391994A (en) * | 2020-11-25 | 2021-02-23 | 中铁北京工程局集团有限公司 | Construction process for mechanically removing floating mud in lake area |
| CN115387418A (en) * | 2021-05-20 | 2022-11-25 | 四川中利源建设工程有限公司 | Method for dredging river channel and drying sludge |
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| CN201883463U (en) * | 2010-12-17 | 2011-06-29 | 南县鑫龙清淤船制造工程有限公司 | Cutter suction head of dredger |
| CN106884451A (en) * | 2017-01-17 | 2017-06-23 | 王兵 | Ecological dredging and synchronous sludge dewatering integrated construction technique |
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