CN107261567A - It is a kind of to improve the method that black and odorous water transparency promotes submerged plant to grow naturally - Google Patents
It is a kind of to improve the method that black and odorous water transparency promotes submerged plant to grow naturally Download PDFInfo
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- CN107261567A CN107261567A CN201710433218.XA CN201710433218A CN107261567A CN 107261567 A CN107261567 A CN 107261567A CN 201710433218 A CN201710433218 A CN 201710433218A CN 107261567 A CN107261567 A CN 107261567A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2433—Discharge mechanisms for floating particles
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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Abstract
The method that black and odorous water transparency promotes submerged plant to grow naturally is improved the invention discloses a kind of, in the water body of the relative closure constituted in mud face and solid boundaries, scrubbed by machinery or jet, deposited particles thing is scattered in overlying water between making water sludge interface, while producing the overlying water turbulence of solid boundaries limitation.Overlying water turbulence fully cleanses turbulent flow and contains thing so that varigrained particulate matter is further scattered in overlying water.Under gravity and fluid force effect, along gravity direction formation granular gradient distribution.Coarse granule sedimentation covering bed mud forms stable sedimentary, and fine grained is that suspended particulate shifts water outlet through flocculation sediment.Water body may be so clear that you can see the bottom after a period of time, meets submerged plant illumination condition.Have no that submerged plant grows or deeper waters naturally for spring, submerged plant should be planted in time, progressively recover the automatical cleaning ability of water body, promote the conversion of Ecology.
Description
Technical field
Administered the present invention relates to a kind of body eutrophication and Water Ecological Recovery technology, more particularly to a kind of raising is black
Smelly water transparency promotes the method that submerged plant grows naturally.
Background technology
Black and odorous water transparency it is low (<30cm), the high (ammonia nitrogen of trophic level>8.0mg/L), typical eutrophic water is belonged to
Body.There are two kinds of typicalnesses in shallow water type eutrophic water body ecology transfer process：It is a kind of to account for leading careless type for submerged plant
Stable state of clear water, it is another to account for leading algae type muddy water stable state for algae；And black and odorous water there is likely to be even algae and can not give birth to
Long " silt muddy water stable state ".From the point of view of the service function that water body can be provided, careless type water body is so clear that you can see the bottom, dissolved oxygen is high, water quality
It is good, there is bigger value of services for the resource and environment needed for social development and support socio-economic activity.Therefore, promote
It is always that body eutrophication administers the target pursued to enter algae type muddy water state water body to careless type clear water state to change.Polluted by external source
It is the conventional method of engineering circles that control and bioelectric detecting, which administer body eutrophication,.However, reducing exogenous nutrition load in a short time
Preferable effect might not can be obtained, the aggrieved preceding level in waters is down to even if exogenous nutrition salt is inputted, due to bed mud product
The long-term influence of tired historic load so that the careless type that waters possibly can not be returned to before unimpaired according to the track of anticipation
Clear water state.Bioelectric detecting is now also in experimental stage, and its process is complicated, the cycle is long, and the method used is also contemplated that thing
The influencing each other of inter-species, biotic population are to factors such as adaptation, the ecology of water safety of geographical environment.
For eutrophic water body, illumination is to influence the primary factor of aquatic plants growth.In a certain depth, plant photosynthesis
The organic substance of effect production can compensate the consumption of its own respiration, and this depth is referred to as compensation depth.More than this
Depth, photosynthesis of plant is weak, and the organic matter of production is insufficient to compensate for the consumption of its own respiration and stopped growing even
It is dead.Water layer more than compensation depth is referred to as true light belt.The true light belt depth of black and odorous water generally only more than ten is right to several tens cm
Exceed 1.0m water body in the depth of water, submerged plant is difficult growth.
The principal element for influenceing water body translucency is turbidity.When water body total phosphorus concentration is more than 50 μ g/L, as concentration increases
Plus turbidity steeply rises；When Chlorophyll-a Content is higher, the weight that turbidity influences also is increased.But turbidity is influenceed after all
Principal element be water body recovery technology concentration.Suspension except rainfall runoff input and dried wet deposition in addition to, be mainly derived from mud-
The strong mass exchange of water termination.Colloidal sedimentary clay between polluted-water mud-water termination typically contains a large amount of superfine organic
Matter particle, by micro force (wave causes mud-water termination friction, fish to chase food and zoobenthos wriggling etc.)
Upper general and deposition is slowly so that water body is chronically at cloudy state.Therefore, to improve water transparency increases the depth of true light belt
Degree, key is to remove the fine grained pollutant between water sludge interface, mud-water termination of structure high stability.
The content of the invention
The method that black and odorous water transparency promotes submerged plant to grow naturally, increase very light are improved the invention provides a kind of
Band depth, meets submerged plant illumination condition, promotes algae type water body to change to careless type clear water state.
Technical solution of the present invention is realized by following steps：
(1) in the water body of the relative closure constituted in a mud face and solid boundaries, scrubbed by machinery or jet, make mud
Contaminant deposition is scattered in overlying water between water termination, while producing the overlying water turbulence of solid boundaries limitation；
(2) contaminant deposition is scattered between the shear stress of mud face turbulent flow makes all water sludge interfaces that closing water body is surrounded
Cover water；Overlying water turbulence fully cleanses turbulent flow and contains thing so that varigrained particulate matter is further scattered in overlying water and (scrubbed
Water)；
(3) acted on by gravity and fluid force, the particulate matter in washing water forms granular gradient distribution in vertical direction；
(4) coarse granule in washing water bottom is settled, and covering bed mud forms the sedimentary of new high stability；
(5) suspended particulate substance being scattered in the washing water of top is pumped out with water, completes easy suspended contaminant between water sludge interface
Transfer.
Required device is made up of a removable pier with the casing under water for being suspended on platform front end.The solid side
Boundary includes long wall, shortwall face, top cover and the mud face of casing；Some flow-stopping plates are vertically arranged on the long wall, wall is formed
The hydraulics configuration of the high rapids degree turbulent flow of limitation.The rapid degree of turbulent flow is higher, and particulate matter rolling, mutually collision or friction are more violent,
Effectively elution area is bigger.So, with the extension for the time of cleansing, the decentralization of particle is higher, elute cleaner.
Set on the casing and scrub mechanism, driving member, loading plate and immersible pump, the mechanism of scrubbing includes and muddy water
The one group of washing head or a discharge flow tube of interracial contact；The driving member includes mechanical arm and guide rail, mechanical arm driving washing head
(swing) is slided in guide rail, mud face is scrubbed and disturbs overlying water generation turbulent flow；The loading plate is arranged on casing moving direction
Two side lower end；The immersible pump is arranged on the top of casing, extracts washing water and is separated through pipeline to pier dirt/water
Groove.The width of loading plate is determined by casing to the pressure in mud face so that casing is unlikely to get deeply stuck in bed mud.
The pier matches somebody with somebody the dynamic, rocking handle of casing lifting under water, mechanical arm driving mechanism and dirt/water separating tank,
The dirt/water separating tank includes coagulating basin and sedimentation basin, and the coagulating basin includes flocculant concentration mechanism and stirring slurry so that wash
Swabbing contains the abundant coagulation formation flco of thing, and flco is precipitated in sedimentation basin, and the sedimentation basin includes upper strata clear water collector pipe and taken out
The sludge pump of settled sludge is taken, upper strata clear water returns to water body by collector pipe, and the flco (sludge) precipitated periodically clears out transfer
Disembarkation, completes the transfer process of suspended particulate substance deposited between a certain position water sludge interface.
Water intaking domain difference, the bed mud with different speciality, are scrubbed, mould using the analogue experiment installation shown in Fig. 1
Intend water sludge interface suspended particulate substance transfer process, determine the bed mud washing time of waters each point, the bed mud for formulating whole waters is washed
Brush program.Washing time is to reach that the scrubbing effect shown in Fig. 2 is suitable.
Scrubbed for the bed mud of actual water body, generally using the washing and brushing device shown in Fig. 3.The a certain position in waters reaches default
After bed mud washing time, scrub mechanism and stop driving, dirt/water separation is persistently carried out, and casing causes loading plate to leave under water for lifting
Mud face, mobile pier puts down casing under water to adjacent position, and driving scrubs mechanism, next round is started on new position
Bed mud scrub, such circulating repetition, until between whole waters water sludge interface suspendable particles shift water outlet.
The present invention has advantages below compared with the prior art：Present invention process is simple, is solved from fluidics principle
The branch problem of colloid particulate matter in black and odorous water.Observe the transparency in waters at any time during sediment.To current
Slowly, the depth of water<1.5m waters, may be so clear that you can see the bottom after 1~2 month, and spring can be observed submerged plant and grow naturally.For
Spring has no that submerged plant grows or deeper waters naturally, and submerged plant should be planted in time, progressively recovers the automatically cleaning of water body
Ability, promotes the conversion of Ecology.
Brief description of the drawings
Fig. 1, bed mud scrub analogue experiment installation.In figure, 1a-bed mud, 2a-washing head, 3a-washing water, 4a-electricity
Machine, 5a-sewage pump, the filterings of 6a-first, 7a-second filtering, 8a-clear water reserviors, 9a-clear water reflux pump, 10a-wash
Brush kettle.
Fig. 2, experimental provision are simulated to different Sediments and scrub front and rear pattern.In figure, 1-Chaohu Pai Heru exits of a lake bottom
Mud, the picture left above (before C0-5 is washed) is that 0-5cm depth bed muds wash preceding pattern, and top right plot (after C0-5 is washed) is to wash rear pattern, lower-left figure
(before C5-10 is washed) washes preceding pattern for 5-10cm depth bed muds, and bottom-right graph (after C5-10 is washed) is to wash rear pattern；2-Dao Xiang buildings water body
(left figure) (right figure) pattern afterwards before 0-10cm depth bed muds are scrubbed；3-milky way park water 0-10cm depth bed muds are (left before scrubbing
Figure) (right figure) pattern afterwards；(figure below) pattern compares after (above) before the black and odorous water bed mud of 4-Lianyungang 3 is scrubbed, wherein 1#
It is imperial tail bed mud, 2# is big Pu bed mud, and 3# is the secondary bed mud in big Pu.
Fig. 3, practical bed mud washing and brushing device schematic diagram.In figure, 1-bed mud, 2-scrub mechanism loading plate, 3-washing head,
4-wall baffle plate, 5-washing water, 6-sewage pump, 7-elasticity lifting rope, 8-moveable platform deck, 9-transmission (swing) machinery
Arm, 10-agitating paddle, 11-flocculant concentration mechanism, 12-coagulating basin, 13-sedimentation basin, 14-sludge, 15-clear water row's mouth.
The ecological State Transferring in pond is tested described in Fig. 4, embodiment 1.In figure, 1-bed mud (right figure) is scrubbed with compareing bed mud
Pattern after (left figure) drying, the careless type clear water state (left figure) of 2-experiment pond present situation is with compareing pond (right figure) algae type muddy water state
Contrast.
Certain Urban Parks's water ecology repairs live figure described in Fig. 5, embodiment 2.It is left in figure --- bed mud was scrubbed after 1 year
The submerged vegetation of self-assembling formation, right --- the situation before improvement.
Bohai Sea Gulf National Urban Wetland Park in Zhejiang described in Fig. 6, embodiment 3 drains off floodwaters the live figure of the emergent regulation in river.It is left in figure ---
Bed mud is scrubbed submerged plant after 1 year and grown naturally, right --- and bed mud scrubs period, and flood washes upside down gabion twice.
Embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementations
Example.
The example that embodiment 1, experiment pond are changed from algae type muddy water state to careless type clear water state
Long 8 meters, wide 2 meters, deep 1.5 meters tank is divided into two by the present embodiment, makees experiment pool and control pond respectively.From
Sedimentary clay is shipped as bed mud, paving bottom of pond thickness 20cm in the Hefei City south Fei river in Anhui Province.Overlying water is pumped into by neighbouring pool, depth of water 1m.Two
The initial total nitrogen 4.764mg/L in pond, total phosphorus 0.548mg/L, transparency 20cm, belong to serious rice-nutrient water body.
The bed mud disturbance of experiment pool uses gas jet, and washing water flows back through sand filter.1 day is stood after the completion of experiment, two are taken
0~5cm of pond top layer bed mud observation.Experiment pool shale is loose, silt content is more.Take 20g mud to be put into 500mL running water beakers to stir
Mix, water base clarification after 15 minutes.Compare pond shale agglomerating, sticky big, add water stirring in beaker, also completely not clear after one week
Clearly.By the drying of two bottom of pond mud, shown in such as Fig. 4 (1), experiment pool bed mud dry weight 15.87g/kg (weight in wet base), more by~0.1mm sand
Grain composition, control bottom of pond mud dry weight 9.32g/kg (weight in wet base), dry and cracked, the rarely seen grains of sand, it is seen that the bed mud after scrubbing is loosely organized, contains
Water is low；And it is high to compare the big water content of bed mud viscosity.
Experiment pool water body gradually becomes clear, can be seen the bottom after 16 days.Autumn, the visible a small amount of submerged plant growth of bottom of pond, are arrived then
Second Year autumn submerged vegetation basically forms.So far experiment pool still maintains careless type clear water state (after 5 years), and chlorophyll a is 7 μ g/
L, total nitrogen 1.36mg/L, total phosphorus 0.04mg/L.And pond is compareed so far still in eutrophic state, chlorophyll a is 155 μ g/L,
Total nitrogen 2.41mg/L, total phosphorus 0.12mg/L.Fig. 4 (2) is the careless type clear water state of experiment pond (left figure) present situation with compareing pond algae type
Muddy water state (right figure) comparison diagram.
Embodiment 2, certain park water restoration of the ecosystem
Long south of the River bank Urban Parks water body is located at downtown, is made up of southern lakelet and Beijing University lake, 1.5~1.9m of the depth of water,
The m of the water surface 7.5 ten thousand2.After 2006, serious rice-nutrient state is presented in water body, and water quality is bad V classes, there is wawter bloom throughout the year
And with black smelly.The measure such as desilting and running water moisturizing was once taken, eutrophic state is not eliminated yet.The design of in August, 2012
It machined sediment in-situ washing and brushing device as shown in Figure 3, the long 15m of pier, width 4m, draft 0.6m.Semi-submersible type is scrubbed
The long 8m of water purifying tank, width 2m, depth 0.6m；Casing length (direct of travel) 0.4m, width 4m, high 0.5m under water, bed mud disturbance is using washing
Brush mechanism.Bed mud is scrubbed first in the southern lakelet (m of area about 2.5 ten thousand2) run 75 days, water body becomes clear；Beijing University is transferred to after the Spring Festival
5 months are run to September examination in lake.August, the environmental monitoring station of city water intaking detection, bad V class of the main water quality index before administering is carried
It is raised to Group III.
Second Year spring, southern lakelet submerged plant grows naturally, and the bottom vegetation that dwells accounts for the water surface about 40%；Autumn Beijing University lake sinks water
Plant accounts for the water surface 20%, promotes hundred lotus park waters and changes from algae type muddy water state to careless type clear water state.Fig. 5 shows the water body
Bed mud scrub completion 1 year after self-assembling formation submerged vegetation (left figure), with administer before situation (right figure) formation sharp contrast.
Embodiment 3, Bohai Sea Gulf National Urban Wetland Park in Zhejiang are drained off floodwaters, and river is emergent to be renovated
Bohai Sea Gulf National Urban Wetland Park in Zhejiang is one of big migratory bird moving passage in the world four, attracts domestic and international birds special every year
Family, scholar and fan come to study and bird appreciation, and geographical position is particularly significant.However, garden water body is by serious dirt in recent years
Dye, particularly Liang Tiaochuan gardens and cross urban district drain off floodwaters river blue-green algae spread unchecked, black smelly phenomenon it is serious.
Two length of the river through garden are respectively 1.3km and 0.9km, wide 10~30m, depth of water 1.0m~2.5m.Due to
Approach river course road is narrow and turning radius is small, bridge wooden footway is more on river, directly using the device as described in case study on implementation 2,
Transport, the lifting of job site are arrived at, and is run all infeasible.In May, 2015 design machined three sets and adapt to different river courses
The sediment easy device of structure.Device is assembled into the pier for one man operation by floating block, scrubs casing hanging flat
On platform.Perched for without prejudice to birds, the distribution box that platform is laid temporarily without generator by bank is powered.Washing water is then direct
Spray into away from the forest land beyond the 20m of riverbank, filtered through sylvan life cover plant, clear water backflows river course.Device June 1 day operation, after 8 days
The section water body scrubbed in advance becomes clear.Two river bottom mud handling projects last 25 days, and sense organ and landscape effect have a distinct increment,
Water body is limpider when ensure that two river courses 7, opening in 8 two months, no algal tufa, occurs without black smelly phenomenon.
Winter (2 months December to next years) river freezes, and Second Year river, which thaws, shortly observes submerged plant growth；
To autumn, submerged vegetation accounts for the water surface about 20%.
It is worth mentioning that, construct the 11st day and meet a heavy rain, municipal administration, which is drained off floodwaters, pours in a large amount of floating objects.Therefore, in river course
Enter garden mouthful and construct gabion；The 4th day another field heavy rain after Practical Completion washes upside down gabion.Nevertheless, third party is in second
Heavy rain samples detection after 19 hours：Organic matter clearance in total nitrogen, total phosphorus and bed mud respectively reaches 64.8%, 78.8% and
80.9%；After 1 year, the organic matter in total nitrogen, total phosphorus and bed mud have dropped 54.3%, 93.6% and 71.8% again, illustrate heavy water
The formation of vegetation makes river water body self-cleaning ability obtain a certain degree of recovery.
Shown in Fig. 6, left figure is that submerged plant grows naturally after engineering is completed 1 year, and right figure is big vast twice during bed mud is scrubbed
Water washes upside down gabion.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. a kind of improve the method that black and odorous water transparency promotes submerged plant to grow naturally, it is characterised in that including following step
Suddenly：
(1) in the water body of the relative closure constituted in a mud face and solid boundaries, scrubbed by machinery or jet, make muddy water circle
Contaminant deposition is scattered in overlying water between face, while producing the overlying water turbulence of solid boundaries limitation；
(2) contaminant deposition is scattered in overlying between the shear stress of mud face turbulent flow makes all water sludge interfaces that closing water body is surrounded
Water；Overlying water turbulence fully cleanses turbulent flow and contains thing so that varigrained particulate matter is further scattered in overlying water/scrub
Water；
(3) acted on by gravity and fluid force, the particulate matter in washing water forms granular gradient distribution in vertical direction；
(4) coarse granule in washing water bottom is settled, and covering bed mud forms the sedimentary of new high stability；
(5) suspended particulate substance being scattered in the washing water of top is pumped out with water, completes turn of easy suspended contaminant between water sludge interface
Move.
2. a kind of according to claim 1 improve the method that black and odorous water transparency promotes submerged plant to grow naturally, it is special
Levy and be, required device includes a removable pier and is suspended on the casing under water of platform front end.
3. a kind of according to claim 2 improve the method that black and odorous water transparency promotes submerged plant to grow naturally, it is special
Levy and be, the solid boundaries include long wall, shortwall face, top cover and the mud face of casing；If being vertically arranged on the long wall
Dry flow-stopping plate, forms the hydraulics configuration of the high rapids degree turbulent flow of wall limitation.
4. a kind of according to claim 3 improve the method that black and odorous water transparency promotes submerged plant to grow naturally, it is special
Levy and be, set on the casing and scrub mechanism, driving member, loading plate and immersible pump, the mechanism of scrubbing includes and muddy water
The one group of washing head or a discharge flow tube of interracial contact；The driving member includes mechanical arm and guide rail, mechanical arm driving washing head
Slided in guide rail；The loading plate is arranged on casing moving direction two side lower end；The immersible pump is arranged on the top of casing
Portion, extracts washing water through pipeline to pier dirt/water separating tank.
5. a kind of according to claim 4 improve the method that black and odorous water transparency promotes submerged plant to grow naturally, it is special
Levy and be, the pier is with the dynamic, rocking handle of casing lifting under water, mechanical arm driving mechanism and dirt/water separating tank, institute
Stating dirt/water separating tank includes coagulating basin and sedimentation basin, and the coagulating basin includes flocculant concentration mechanism and stirring slurry so that scrub
Water contains thing and flocculates to form flco, and flco is precipitated in sedimentation basin, and the sedimentation basin includes upper strata clear water collector pipe and extracted to deposit
The sludge pump of sludge, upper strata clear water returns to water body by collector pipe, and the flco precipitated periodically clears out transfer disembarkation.
6. a kind of raising black and odorous water transparency described in claim 1 promotes the method that submerged plant grows naturally, its feature
It is that water intaking domain difference, the bed mud with different speciality simulate water sludge interface suspended particulate substance transfer process, determine waters
The time that the bed mud of each point is scrubbed.
7. a kind of raising black and odorous water transparency according to claim 1 promotes the method that submerged plant grows naturally, its
It is characterised by, a certain position in waters is reached after default bed mud washing time, scrubs mechanism and stop driving, dirt/water separation is persistently entered
OK, mobile pier, drives casing displacement under water, and the bed mud for starting next round on new position is scrubbed, so circulation weight
It is multiple, until suspendable particles shift water outlet between whole waters water sludge interface.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113501632A (en) * | 2021-06-22 | 2021-10-15 | 安徽雷克环境科技有限公司 | River and lake bottom material improvement and ecological environment improvement method |
| CN115259437A (en) * | 2022-06-30 | 2022-11-01 | 安徽雷克环境科技有限公司 | Treatment method for river and lake bottom mud surface pollutant and water body suspended fine particles |
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| CN105110599A (en) * | 2015-09-14 | 2015-12-02 | 安徽雷克环境科技有限公司 | Floating platform for bottom mud elution |
| CN105906173A (en) * | 2016-07-12 | 2016-08-31 | 林映津 | Repairing method and repairing device of black and odorous river water |
| CN106746343A (en) * | 2016-12-23 | 2017-05-31 | 深圳市恒水清环保科技有限公司 | The processing method and ship-borne equipment of a kind of black and odorous water |
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| JP2011058190A (en) * | 2009-09-08 | 2011-03-24 | Kyooritsu Machinery:Kk | Sludge recovery apparatus |
| CN203891091U (en) * | 2014-06-11 | 2014-10-22 | 山东省环境保护科学研究设计院 | Environment-friendly dredging system for contaminated bottom mud |
| CN105110599A (en) * | 2015-09-14 | 2015-12-02 | 安徽雷克环境科技有限公司 | Floating platform for bottom mud elution |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113501632A (en) * | 2021-06-22 | 2021-10-15 | 安徽雷克环境科技有限公司 | River and lake bottom material improvement and ecological environment improvement method |
| CN115259437A (en) * | 2022-06-30 | 2022-11-01 | 安徽雷克环境科技有限公司 | Treatment method for river and lake bottom mud surface pollutant and water body suspended fine particles |
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| Publication number | Publication date |
|---|---|
| CN107261567B (en) | 2020-05-19 |
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