CN106986515A - A kind of riverbed sediment in-situ method of modifying - Google Patents
A kind of riverbed sediment in-situ method of modifying Download PDFInfo
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- CN106986515A CN106986515A CN201710387088.0A CN201710387088A CN106986515A CN 106986515 A CN106986515 A CN 106986515A CN 201710387088 A CN201710387088 A CN 201710387088A CN 106986515 A CN106986515 A CN 106986515A
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- 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
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- 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
- C02F11/02—Biological treatment
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Abstract
The invention discloses a kind of riverbed polluted bed mud in-situ remediation method.River course dulling for current many cities, smelly, regulation effect is poor, though the short time having administer it is qualified after and can have rebound phenomenon, the present invention solves above mentioned problem.Use the method for the invention repair after bed mud top layer for fine and close bulk structure, can prevent the harmful substances such as the heavy metal contained in mud from entering in water body to pollute；Original ecological environment is not destroyed；Secondary pollution is not resulted in；Administer thorough, do not recur substantially.
Description
Technical field
The invention belongs to technical field of environmental management, and in particular to a kind of riverbed sediment in-situ method of modifying.
Background technology
The black and odorous water phenomenon in many cities cannot be administered effectively, even if short time governance for reaching standard than more serious at present
There can be rebound phenomenon again afterwards, these rebound phenomenons have quite a few reason to be to be continued from the bottom sludge in these riverbeds to water
Body layer distributes what poisonous and harmful substance was caused.Therefore want to the thorough of river water remediation, it is necessary to which the bed mud of riverbed bottom is carried out
It is effective to administer.
Bed mud carries receiving as one of three overall situation key elements (water quality, aquatile and bed mud) of aquatic ecosystem
Xenobiotic pollutants and the double effects that nutritive salt is discharged into water body, in the material circulation of aquatic ecosystem and energy flow process
In play an important role.Bed mud is made up of substantial amounts of nutriment (nitrogen, phosphorus, organic matter etc.), as it is constantly accumulated, no
Can only material impact be produced to the benthon of existence wherein, while its intrinsic nutriment also can be with water sports
Into upper strata water body, make the increase of the nutrient concentrations such as Water, phosphorus, aggravate the Eutrophic Extent and algal bloom of water body
The probability broken out.City river bed mud is repaired at present, mainly channel cleanout, bed mud covering and bed mud original flavor microorganism
Repair this several method.
Channel cleanout refers generally to by plant equipment, will deposit the mud displacement of river bed or blow and stir into turbid water shape,
Flowed away with river, so as to play a part of desilting.The purpose of desilting is will to sink to the bottom mud to be cut down, and makes the circulating function in river course
Normally.The technological means of channel cleanout typically has machine excavation (being excavated containing submersible), amphibious equipment to wash, high pressure water flushing etc.
Technique.COD, ammonia nitrogen and BOD can effectively be cut down to the cleaning of polluted sludge, Local enrichment mud, waved
The pollution sources bodies such as phenol are sent out, while the cross-section of river can be increased, promotes water body flow and exchange, promotes the self-cleaning ability of water body.Clearly
Deposit technique is the key of dredging effect quality, is concentrated mainly on development lightweight desilting material, coordinates the desilting mode of science, is made clear
Disturbance of the silt process to water body reaches minimum.Although dredging technology achieves more obvious effect to a certain extent, always
Cost is high for body.In addition, it is desirable to take measures to prevent secondary pollution during desilting, the polluted bed mud cleared out is entered
Row safe handling is disposed.Sediment Dredging can together take away benthon, microorganism, break the ecological balance formed for a long time, in
Food chain in the disconnected ecosystem, just occurs new environmental problem.
Bed mud is covered, i.e., covering one or more layers coating in polluted bed mud top makes bed mud separate and prevent with overlying water
The release of pollutant in bed mud, is another polluted bed mud based technique for in-situ remediation by domestic and international extensive concern.Covering system
The main ambient influnence by limiting polluted bed mud in terms of three below：(1) polluted bed mud is physically divided with benthon
Open；(2) fixed-contamination bed mud, to prevent sediments re-suspension or migration；(3) reduction pollutants in sediments leads to the diffusion of overlying water
Amount.Conventional bed mud covering material includes clean deposition thing, sand and gravel etc..It is potential to environment compared to other recovery technique
Harm is small.Earliest bed mud soverlay technique be 1978 the U.S. carry out, then other it is several country also sequentially with.It is external
Substantial amounts of research has been done to the bed mud covering system being made up of clean deposition thing, sand and gravel, and has carried out many
Successfully application.Clean deposition thing, sand and gravel etc. belong to inert material, bed mud is discharged the crystallized ability of pollutant compared with
Difference, this covering system (i.e. " bed mud inertia covering system ") for causing to be built by inert material controls the effect of sediment contamination release
Rate is relatively low.Many experimental results show that covering can effectively prevent that pollutant enters water body and causes secondary pollution in bed mud, to water
Matter improves significantly.The problem of existing is that quantities is big, it is necessary to which substantial amounts of cleaning silt etc., source is difficult.Cover simultaneously
Lid can increase the amount of bed mud, water body storage capacity is diminished.
Sediment in-situ is biological prosthetic to be referred in the case where not destroying Sediments natural environment part substantially, to contaminated environment pair
As not carrying or transporting, carried out in former place biological prosthetic.It is divided into engineering reparation in situ and reparation naturally in situ.Engineering in situ
That repairs nutrition needed for by adding biological growth to improve bioactivity or addition laboratory cultures has special affinity
Microorganism accelerates environment remediation；In situ repair naturally is to utilize original microorganism in bed mud environment, is given birth in natural conditions
Thing is repaired.Biological prosthetic, promotion bottom mud microbe breeding is carried out to bed mud, bed mud organic matter is under microbial action, rapid point
Solution, discharges the pernicious gases such as ammonia nitrogen, hydrogen sulfide so that bed mud aerobic layer thickeies, and mud layer is thinned, and accelerates bed mud micronutrient
Release.It is limited in that the periodicity of microorganism growth causes taking effect relatively slowly for technology, and the complexity of environment causes microorganism
It can not often survive, cultivate failure.
The content of the invention
Goal of the invention：The river course dulling in many cities, smelly at present, regulation effect is poor, even if the short time having administers
There can be rebound phenomenon again after qualified.In the case where controlling the precondition in extraneous contamination source, rebound phenomenon is mainly by riverbed bottom
Portion's mud continues to distribute poisonous and harmful substance and riverbed bottom soil property with reference to insecure to water body, is slowly lost in and enters overlying water
Caused by body, therefore this invention is to provide a kind of new method for river regulation.
Technical scheme：Riverbed in-situ remediation method of the present invention, comprises the following steps：
Step 1, carry out cutting dirty processing to administering region, contaminated region is separated；Cut it is dirty after the completion of will administer region
Water extract out until exposing the mud of bottom, the water of extraction is discharged to close region.Its object is to the medicament energy subsequently added
Fully contacted with mud, lift regulation effect.
Step 2, EM fermented liquids are added into mud, addition is 30~50 grams/m2；
Step 3, soil improvement medicament is sprayed onto muck surface, fountain height is 500~700 grams/m2, sprinkling completion standing
After 40~60 minutes, go to river and be stirred 1~5 minute.This step is the emphasis administered, and adds soil improvement medicament to mud table
Layer is improved.The soil improvement medicament used by following weight percentage material composition：Clay 45~60%, plant is fine
Dimension element 15~20%, plant lignin 10~20%, agricultural sludge 10~20%.After improved, mud top layer has unique
Crumb structure, this structure is that a kind of soil texture for forming aggregate is bonded together by some soil simple grains, this granule
About 30 centimeters of structure.Crumb structure body is macrovoid between showing as granule, and interior granule is fine pore, and big fine pore exists simultaneously
And ratio is appropriate, total porosity is high, and invalid hole is few.Just because of this special construction, it has the important of the following aspects
Feature：
(1) be microorganism and plant growth small fertilizer storehouse.Water holding pore water inside granule is more, gas componant is few, both
The water soluble nutrient for entering granule with water can be preserved, is suitable for the activity of microorganism again.Organic matter decomposition is slow, is conducive to corruption
The synthesis of matter is grown, so being conducive to the accumulation of nutrient, plays a part of fertilizer conservation.Gas componant is more in aeration porosity between granule,
It is suitable for the activity of aerobic microbiological, organic matter decomposition is fast, and the available nutrient of generation is more, and nutrient-supply capacity is good.So fertilizer conservation is supplied
The contradiction of fertilizer is coordinated, and the nutrient situation of granule is good.
(2) higher Soil Biodiversity is maintained.Because the big fine pore of the soil of crumb structure is present simultaneously, and ratio
Suitably, aqueous vapor environment is polynary, matter energy supply is polynary, and this is different size build, the animal of aerobic-anaerobic life habit, micro-
Biology provides good living space.This is soil for agricultural production due to its higher bio-diversity
Physics, chemistry and biological fertility provide important leverage.
(3) there is hydrophobic character.Granule improved native (or mud) has water insoluble essential characteristic, and this is due to
Particle is produced from the presence of outside membrane structure and ties up phenomenon, and this is the key factor that mud body is not lost in water body.
Step 4, kind of planting submerged plant and very aqueous plant are started after 24 hours；Finally by water level polishing, enclosing is removed.
In above-mentioned steps, soil improvement medicine component and content described in us are：It is formulated 1 (55 parts of sepiolite, plant straw
18 parts of stalk, 15 parts of plant lignin, 12 parts of lime) or 2 (55 parts of weathered coals, 18 parts of resin glue material, plant lignin 15 of formula
Part, 12 parts of zeolite) or 3 (55 parts of clay, 18 parts of plant cellulose, 15 parts of plant lignin, 12 parts of agricultural sludges) of formula, preferably
Formula 3.
In above-mentioned steps, the EM fermented liquids described in us are according to weight ratio 20 by water and brown sugar and EM strains：1:
0.02~0.1 is configured, and is formed through the configuration in 5 days or so of 30~40 degree of sealed fermentings.Described EM strains are bifidocaterium, lactic acid
One or more combinations in bacterium, bacillus, photosynthetic bacteria, saccharomycete.The purpose for adding EM fermented liquids is quick training
Plant the ecological environment in improved granule body.EM fermented liquids are added especially before soil improvement to cause it more equal
The even inside for being dispersed in granule body.Further, EM strains of the present invention can be cyanobacteria and colloid gemma bar
Bacterium；Or lactobacillus acidophilus and bacillus subtilis；Or saccharomycete and bacillus licheniformis.It is preferred that cyanobacteria and colloid gemma bar
Bacterium.
After soil improvement terminates, built to accelerate the ecological of whole environment, according to actual conditions, suitable water need to be selected
Plant, improves river course Plant Community in Green Space, improves the self-purification capacity of water ecosystem.Specifically, of the present invention plant
The planting requirement of thing is：Selected at normal water line to the 100cm depth of waters based on emergent aquactic plant；Submerged plant, which is then planted in water body, to be seen
In depth of water region within 2 times of degree.More specifically, the planting requirement of described plant for wherein emergent aquactic plant be yellow flag 36~
40 bags/m2, 25~30 bags/m of reed2, 25~30 clumps/m of thaliadeabata2；Submerged plant is 40~50 plants/m of eel grass2, black algae 25~36
Clump/m2, 20~30 clumps/m of bog pondweed2。
Further research is found, such scheme can be improved further, i.e. in the forward direction mud of implementation steps 2
The mixture of acrylamide and starch is added in layer.Its main purpose is to realize that top layer is necessarily thick after the decrement of bed mud original flavor
The mud volume density of degree will increase, and be that more preferable precondition is created in follow-up soil improvement.Specifically, described acrylamide with
The mass ratio of the mixture of starch is 5~8:1.
Beneficial effect：Compared with existing conventional repair techniques, the bed mud top layer after the present invention is repaired is fine and close bulk
Structure, can prevent the harmful substances such as the heavy metal contained in mud from entering in water body to pollute；Do not destroy original
Ecological environment；Secondary pollution is not resulted in；Administer thorough, do not recur substantially.
Using polluted bed mud in-situ remediation method in riverbed of the present invention, riverbed is repaired, with advantages below：
1st, mud is thinning after improving, and river water body storage capacity becomes many；
2nd, the features such as mud after improvement is because of its fine and close crumb structure, hydrophobicity so that the weight contained in mud
The pollutants such as metal are mothballed in bottom, will not be entered substantially in the water body of upper strata；
3rd, the pollutant such as organic matter contained in mud, can progressively be degraded it by the mud after improvement itself.
4th, there is a stronger operability, administer that the cycle is also relatively short, effect is more obvious.
Embodiment：
The present invention is further described below below by specific case.
Exemplified by examining river by Nanning, river takes riverbed bottom sludge to be detected, after testing organic matter about 3.02% in mud,
Cu about 40.3mg/kg, Pd about 45.5mg/kg.
One, medicament research experiment
Contain organic matter about 3~3.5%, Cu about 40 in configuration and that raw material mud that to examine river pollution similar, raw material mud
~41mg/kg, Pd about 45~46mg/kg.
Embodiment 1
Add (about 40 grams/m of EM fermented liquids2), described is by water and brown sugar and EM strains (cyanobacteria and colloid gemma
Bacillus) compare 20 according to weight：1:0.02~0.1 is configured, and is formed through the configuration in 5 days or so of 30~40 DEG C of sealed fermentings.
By soil improvement medicament (55 parts of clay, 18 parts of plant cellulose, 15 parts of plant lignin, 12 parts of agricultural sludge) spray
It is spread across muck surface (about 600 grams/m of consumption2), sprinkling is completed after standing 40 minutes, is stirred 1 minute.After stirring is completed 30 minutes.
The structure of sampling detection mud：0.25~0.45ml/g of pore volume, than 200~300m of surface2/ g, 6~10nm of aperture.
After being disposed, mud composition, organic matter about 2.5%, Cu about 31mg/kg, Pd about 21mg/kg are detected.
Embodiment 2
Raw material mud, reparation step are substantially the same manner as Example 1, and difference is, soil improvement medicament is replaced by：Sea
55 parts of afrodite, 18 parts of straw, 15 parts of plant lignin, 12 parts of lime.
The structure of sampling detection mud：0.25~0.35ml/g of pore volume, than 200~250m of surface2/ g, 5~8nm of aperture.
After being disposed, mud composition, organic matter about 2.9%, Cu about 35mg/kg, Pd about 22mg/kg are detected.
Embodiment 3
Raw material mud, reparation step are substantially the same manner as Example 1, and difference is, soil improvement medicament is replaced by：Wind
Change 55 parts of coal, 18 parts of resin glue material, 15 parts of plant lignin, 12 parts of zeolite.
The structure of sampling detection mud：0.25~0.38ml/g of pore volume, than 200~260m of surface2/ g, 5~9nm of aperture.
After being disposed, mud composition, organic matter about 2.8%, Cu about 38mg/kg, Pd about 28mg/kg are detected.
Pass through embodiment 1, embodiment 2, the test data of embodiment 3, it can be seen that soil improvement reagent combination is：It is viscous
55 parts of soil, 18 parts of plant cellulose, 15 parts of plant lignin, 12 parts of agricultural sludge, most preferably.
Two, EM fermented liquid research experiment
Embodiment 4
Raw material mud, reparation step are substantially the same manner as Example 1, and difference is, EM strains are replaced by the newborn bar of acidophilus
Bacterium and bacillus subtilis.
After being disposed, mud composition, organic matter about 2.8%, Cu about 37mg/kg, Pd about 29mg/kg are detected.
Embodiment 5
Raw material mud, repair step it is substantially the same manner as Example 1, difference is, EM strains be replaced by saccharomycete with
Bacillus licheniformis.
After being disposed, mud composition, organic matter about 2.7%, Cu about 35mg/kg, Pd about 30mg/kg are detected.
Pass through embodiment 1, embodiment 4, the test data of embodiment 5, it can be seen that selection is by water and brown sugar and EM strains
Compare 20 according to weight：1:0.02~0.1 is configured, and the EM bacterium through the configuration in 5 days or so of 30~40 degree of sealed fermentings are fermented
Liquid, best results.
Three, consumption research experiment
According to the experiment of embodiment 1~5, we determined that the formula of soil improvement medicament is 55 parts of clay, plant cellulose
18 parts, 15 parts of plant lignin, 12 parts of agricultural sludge；EM fermented liquids are according to weight ratio 20 by water and brown sugar and EM strains：
1:0.02~0.1 is configured, through the configuration in 5 days or so of 30~40 degree of sealed fermentings.On this basis, we are used
Quantifier elimination.
Embodiment 6
Raw material mud, reparation step are substantially the same manner as Example 1, and difference is that the consumption of soil improvement medicament is
700 grams/m2, the consumption of EM fermented liquids is 50 grams/m2。
After being disposed, mud composition, organic matter about 2.7%, Cu about 31mg/kg, Pd about 27mg/kg are detected.
Embodiment 7
Raw material mud, reparation step are substantially the same manner as Example 1, and difference is that the consumption of soil improvement medicament is
500 grams/m2, the consumption of EM fermented liquids is 30 grams/m2。
After being disposed, mud composition, organic matter about 2.8%, Cu about 33mg/kg, Pd about 29mg/kg are detected.
Pass through embodiment 1, embodiment 6, the test data of embodiment 7, comprehensive service efficiency, it can be seen that optimum amount is
The consumption of soil improvement medicament is 600 grams/m2, the consumption of EM fermented liquids is 40 grams/m2。
Four, improvement project experiment
Using in 1~embodiment of embodiment 7, identified optimum formula and consumption change test procedure.
Embodiment 8
The mixture (5 parts of acrylamide, 1 part of starch) of acrylamide and starch is added into mud, input amount is 40
Gram/m2；Add (about 40 grams/m of EM fermented liquids2), described is according to weight ratio 20 by water and brown sugar and EM strains：1:0.02
~0.1 is configured, and is formed through the configuration in 5 days or so of 30~40 DEG C of sealed fermentings.By soil improvement medicament (55 parts of clay, plant
18 parts of cellulose, 15 parts of plant lignin, 12 parts of agricultural sludge) it is sprayed onto (about 600 grams/m of muck surface2), sprinkling completes quiet
Put after 40 minutes, stir 1 minute.
After being disposed, mud composition, organic matter about 1.95%, Cu about 19mg/kg, Pd about 11mg/kg are detected.
It can be seen that repairing effect can greatly be increased by increasing the step before soil improvement.
Further study the topology discovery of mud：The structure of sampling detection mud：0.25~0.35ml/g of pore volume, compares surface
400~500m2/ g, 6~10nm of aperture.It can be seen that, under such pore structure, it is more suitable for us and matches somebody with somebody the life of EM fermented liquids
State repair.
Five, Nanning examines river and administers case
It is whole to administer about 150000 square metres of area by taking the husky rivers improvement of river bed in Nanning as an example.
Polluted area to be administered is separated with sand hill, extracted out the water in region to be administered with water pump until exposing bottom
Mud, the water of extraction is discharged to close region.Then manually separation of solid and liquid medicament is sprayed onto muck surface (about 50 by mode
Gram/m2), sprinkling is completed after standing 40 minutes, is stirred 2~3 times with rotary cultivator, to realize the separation of solid and liquid of mud.Stirring is completed
EM fermented liquids (about 60g/m is added after 10 minutes2), then add soil improvement medicament (clay 45%, plant cellulose
20%, plant lignin 16%, agricultural sludge 19%), addition about 500g/m2, stirred 2~3 times with rotary cultivator.After 24 hours
Start planting plants, wherein emergent aquactic plant is 40 bags/m of yellow flag2, 30 bags/m of reed2, 30 clumps/m of thaliadeabata2；Submerged plant is
50 plants/m of eel grass2, black 36 clumps/m of algae2, 30 clumps/m of bog pondweed2.Polishing water level, removes enclosing.
Administer preceding river course situation：Water body is muddy, subregion is smelly；The relatively low about 10~15cm of visibility；Bottom sludge is about
1m is thick and blacks.Water body after polishing water level is administered and has become clear, without peculiar smell；40cm~80cm is arrived in visibility lifting；About 30 is public
The improved soil divided, is presented crumb structure；Mud about 75cm is thick.Mud is 60cm after three months, is presented normal yellowish-brown
Color, and produced without peculiar smell, regulation effect is preferable.
6th, the husky river management case in Nanning
It is whole to administer about 150000 square metres of area by taking the husky rivers improvement of river bed in Nanning as an example.
Polluted area to be administered is separated with sand hill, extracted out the water in region to be administered with water pump until exposing bottom
Mud, the water of extraction is discharged to close region.Then manually separation of solid and liquid medicament is sprayed onto muck surface (about 50 by mode
Gram/m2), sprinkling is completed after standing 40 minutes, is stirred 2~3 times with rotary cultivator, to realize the separation of solid and liquid of mud.Stirring is completed
EM fermented liquids (about 60g/m is added after 10 minutes2), then add soil improvement medicament (clay 45%, plant cellulose
20%, plant lignin 16%, agricultural sludge 19%), addition about 500g/m2, stirred 2~3 times with rotary cultivator.After 24 hours
Start planting plants, wherein emergent aquactic plant is 40 bags/m of yellow flag2, 30 bags/m of reed2, 30 clumps/m of thaliadeabata2；Submerged plant is
50 plants/m of eel grass2, black 36 clumps/m of algae2, 30 clumps/m of bog pondweed2.Polishing water level, removes enclosing.
Administer preceding river course situation：Water body is muddy, subregion is smelly；The relatively low about 10~15cm of visibility；Bottom sludge is about
1m is thick and blacks.Water body after polishing water level is administered and has become clear, without peculiar smell；40cm~80cm is arrived in visibility lifting；About 30 is public
The improved soil divided, is presented crumb structure；Mud about 75cm is thick.Mud is 60cm after three months, is presented normal yellowish-brown
Color, and produced without peculiar smell, regulation effect is preferable.
Above-described embodiment is typical case of the invention.It should be appreciated that embodiment described herein is only used to
The description and interpretation present invention, is not intended to limit the present invention.It is any not depart from present inventive concept and fall into claims protection
The improvement of scope replaces within the scope of the present invention, is not exposed to the limitation of embodiment and the case.
Claims (9)
1. a kind of riverbed sediment in-situ method of modifying, it is characterised in that comprise the following steps：
Step 1, carry out cutting dirty processing to administering region, contaminated region is separated；Cut it is dirty after the completion of will administer the water in region
Extract out until exposing the mud of bottom；
Step 2, EM fermented liquids are added into mud, addition is 30~50 grams/m2；
Step 3, soil improvement medicament is being sprayed onto muck surface, fountain height is 500~700 grams/m2, sprinkling completion standing 40
After~60 minutes, go to river and be stirred 1~5 minute；
Step 4, kind of planting submerged plant and emergent aquactic plant are started after 24 hours；Finally by water level polishing, enclosing is removed.
2. sediment in-situ method of modifying in riverbed according to claim 1, it is characterised in that described soil improvement medicament into
Divide and content is：45~60 parts of clay, 15~20 parts of plant cellulose, 10~20 parts of plant lignin, agricultural sludge 10~20
Part.
3. sediment in-situ method of modifying in riverbed according to claim 1, it is characterised in that described EM fermented liquids be by
Water and brown sugar and EM strains are according to weight ratio 20：1:0.02~0.1 is configured, and is matched somebody with somebody within 5 days or so through 30~40 DEG C of sealed fermentings
Put and form.
4. sediment in-situ method of modifying in riverbed according to claim 1, it is characterised in that described EM strains be bifidocaterium,
One or more combinations in lactic acid bacteria, bacillus, photosynthetic bacteria, saccharomycete.
5. sediment in-situ method of modifying in riverbed according to claim 1, it is characterised in that described EM strains are cyanobacteria
With the combination of colloid bacillus cereus.
6. sediment in-situ method of modifying according to claim 1, it is characterised in that the planting requirement of described plant is：Often
Selected at waterline to the 100cm depth of waters based on emergent aquactic plant；Submerged plant is then planted in the depth of water area within 2 times of water body visibility
In domain.
7. sediment in-situ method of modifying according to claim 1, it is characterised in that the planting requirement of described plant is it
Middle emergent aquactic plant is 36~40 bags/m of yellow flag2, 25~30 bags/m of reed2, 25~30 clumps/m of thaliadeabata2；Submerged plant is eel grass
40~50 plants/m2, black 25~36 clumps/m of algae2, 20~30 clumps/m of bog pondweed2。
8. sediment in-situ method of modifying according to claim 1, it is characterised in that in the forward direction mud of implementation steps 2
Add the mixture of acrylamide and starch.
9. sediment in-situ method of modifying in riverbed according to claim 1, it is characterised in that described acrylamide and starch
Mixture mass ratio be 5~8:1.
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| CN107382026A (en) * | 2017-07-19 | 2017-11-24 | 南京必蓝环境技术有限公司 | A kind of method for improveing riverbed bed mud and the method for configuring riverbed bed mud modifying agent |
| CN107381998A (en) * | 2017-07-19 | 2017-11-24 | 南京必蓝环境技术有限公司 | A kind of riverbed sediment in-situ method of modifying |
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| CN107382026A (en) * | 2017-07-19 | 2017-11-24 | 南京必蓝环境技术有限公司 | A kind of method for improveing riverbed bed mud and the method for configuring riverbed bed mud modifying agent |
| CN107381998A (en) * | 2017-07-19 | 2017-11-24 | 南京必蓝环境技术有限公司 | A kind of riverbed sediment in-situ method of modifying |
| CN107473543A (en) * | 2017-09-21 | 2017-12-15 | 中国环境科学研究院 | Sediment in-situ remediation method at sewage draining exit |
| CN108275785A (en) * | 2018-01-23 | 2018-07-13 | 刘牧 | The application method of micro- oxygen particle of in situ environment microbial acclimation is modified through EM |
| CN108751570A (en) * | 2018-05-08 | 2018-11-06 | 扬州市海诚生物技术有限公司 | A kind of chemical remediation combines biological prosthetic river regulation method |
| CN109111065A (en) * | 2018-08-07 | 2019-01-01 | 上海久树环境科技有限公司 | A kind of riverbed ecology synthesis restorative procedure |
| CN108929023A (en) * | 2018-08-29 | 2018-12-04 | 合肥市东方美捷分子材料技术有限公司 | A kind of sludge mud-water separation method |
| CN109247204A (en) * | 2018-09-04 | 2019-01-22 | 武汉秀水生态工程有限公司 | A kind of method of submerged plant rapid field planting |
| CN110272853A (en) * | 2019-07-25 | 2019-09-24 | 广东五色时空生态环境科技有限公司 | A kind of microbial culture method |
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