CN105478458B - A kind of device and method of in-situ treatment river bottom mud heavy metal pollution - Google Patents
A kind of device and method of in-situ treatment river bottom mud heavy metal pollution Download PDFInfo
- Publication number
- CN105478458B CN105478458B CN201510976505.6A CN201510976505A CN105478458B CN 105478458 B CN105478458 B CN 105478458B CN 201510976505 A CN201510976505 A CN 201510976505A CN 105478458 B CN105478458 B CN 105478458B
- Authority
- CN
- China
- Prior art keywords
- heavy metal
- river bottom
- heavy
- bottom mud
- mud
- Prior art date
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Sorption (AREA)
- Treatment Of Sludge (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of device and method of in-situ treatment river bottom mud heavy metal pollution, device includes seal closure and stirring system；Seal closure is made of cylinder and barrel top bottom plate, and cylinder inner wall is equipped with heavy-metal adsorption material layer, and stirring system includes driving motor, drive rod and circular top plate, and circular top plate is equipped with teeter column；The device is for handling river bottom mud heavy metal pollution, it is fast, high-efficient to heavy metal adsorption with rate, and occupied area it is small, can totally enclosed type operation the characteristics of, its process for handling river bottom mud is simple, directly seal closure is inserted into river bottom mud, it opens driving motor to be stirred river bottom mud, while heavy metallic activation agent is added and promotes heavy metal to dissolve out and is adsorbed by heavy-metal adsorption material；This method can effectively remove and recycle heavy metal in river bottom mud, and without destroying original ecosystem, without the highly difficult technique such as shut off, not cause secondary pollution.
Description
Technical field
The present invention relates to a kind of device of in-situ treatment river bottom mud heavy metal pollution and a quick removal river bottom mud huge sum of moneys
Category method belongs to river Heavy Metal Pollution technical field.
Background technique
River bottom mud refers to the superficial deposit substance of water bottom, is made of microorganism, humus, soil and silt etc.
Mixture, by long-time physical chemistry, biological effect and water body transmit and be deposited on water bottom and formed.Bed mud can
Reflect the historical process that water body develops, is the important composition of the natural waters ecosystems such as river, lake, mouth of the river beach
Part.
Heavy metal in bed mud is from atmospheric falling dust, precipitation, soil erosion, rainwash, all kinds of sewage, solid refuse
And pesticide etc., have the characteristics that chronicity, cumulative bad, latency and irreversibility, it can be rich by thousands of hundred times of ground of food chain
Collection, is finally detrimental to health.Especially industrial development bring heavy metal pollution, because heavy metal will not be biodegradable, when
When environmental change, the Heavy Metals being deposited in bed mud will occur to convert and be discharged into water body to cause secondary pollution.Simultaneously
Heavy metal has bioaccumulation, and heavy metal, which passes through biological metabolism, can retain, accumulates and migrate the generation cause in organism
The harm of malicious teratogenesis, not only endangers the benthon in river, while seriously threatening the health of people.
Countries in the world are different to the control and plan and Treatment process scheme of Heavy Metal Pollution in Sediments at present, especially exist
China, the factors such as contaminated and Economy Contrast influence, and do not have the item for carrying out Heavy Metal Pollution in Sediments control comprehensively still
Part.It is different according to the pollution level of polluted water body, in conjunction with the implementation condition of contaminated site,
The recovery technique of currently used heavy metal polluted bed mud is broadly divided into in-situ treatment technology and dystopy processing technique.
In-situ treatment technology mainly includes phytoremediation in situ and fixation in situ technology, wherein phytoremediation in situ with its at
This is low, easy to operate, is not likely to produce the advantages such as secondary pollution and is concerned, but there are still treatment effeciency is low, planting is easy
The defects of being influenced by local climate, river course flood situation.Fixation in situ technology is that curing agent is added into bed mud, and heavy metal is consolidated
It is scheduled in bed mud, blocks migration of the heavy metal into water body, water of the technology by the physicochemical property and natural water for solidifying medicament
Sharp hydrological characteristics are affected, and there is no reliable medicament delivery device at present, realize that uniform no leak source covering difficulty is larger.
Dystopy Treatment process need by bed mud carry out dystopy dredging, but bed mud in Dredging Process be easy again will be therein
Pollutant release, influences Upper water's quality；Sediment Dredging needs fairly large earth work to be unfolded simultaneously, the bed mud after excavation
Need to fill after being dehydrated stabilization processes on ground, it is therefore desirable to be equipped with relevant bed mud pre-processing device, dehydration equipment and
The plurality of devices such as the stabilisation curing process of bed mud and technique, complicated for operation, land occupation is big, and cost of investment is high, limits different
The application of position Treatment process.
Domestic successful repairs contaminated sediments, the example of deposit is not much and sees, developed country is imitated to spend a large amount of moneys like that
Gold is also unrealistic to repair bed mud with Treatment of Sludge for dredging, and chemical remediation be easy to cause secondary pollution, is unfavorable for ring
The sustainable development that border is administered.Bed mud is excavated also to be easy for the pollutant in bed mud to be re-released into water body, to water body and
The corresponding ecosystem causes secondary pollution.Therefore, it finds and neither disturbs bed mud original state, and can efficiently quickly remove in bed mud
Pollutant, while also can be reduced capital investment, save the cost, based technique for in-situ remediation easy to operate becomes contaminated sediments, sinks
The developing direction of product object in-situ immobilization.
" contaminated sediments processing unit ", the dress are disclosed in the Chinese patent that Authorization Notice No. is CN203307188U
Set and handled using the dredging of bed mud dystopy, using flocculation sedimentation dewatering and bed mud heavy metal stabilization Treatment process to bed mud into
Row dystopy is administered, the landfill stabilization after stabilization processes, the qualified discharge after processing of the sewage after bottom-mud dewatering.But the device is still
So belong to bed mud showering technology, needs to dredge bed mud, increase the risk of secondary pollution water body；Bottom-mud dewatering,
It stabilizes and the links such as landfill, sewage treatment is both needed to build corresponding structures and adds medicament, increase treatment cost.
Disclose that " river heavy metal polluted bed mud dystopy is controlled in the Chinese patent that Authorization Notice No. is CN204661518U
Reason system ", the system are the integrated of a whole set of sludge handling equipment, including roller-type stone washing machine, collection mud sump, screw sand washer, leaching
The molten medicine device of washing lotion, mud mix quenched pond, mud-settling pit, ring waste reaction tank, elution liquid precipitate recovery pond, vibration
Sieve, hydrocyclone, mud concentration basin, sludge conditioning pond, mechanical dewatering equipment, stable curing mixing plant, tail water chemistry are anti-
Ying Chi, tail water chemical precipitation pond, the molten medicine device of flocculant and the molten medicine device of stabilizer.Principle is still that bed mud mixes after pretreatment
The dehydration of retrogradation shallow lake and mechanical dehydration, fill after the dewatered stabilized processing of bed mud, the sewage generated during bottom-mud dewatering
It is further processed in pond in tail water chemical reaction pond, tail water chemical precipitation, until qualified discharge.The set bed mud governing system is first
It needs to excavate polluted bed mud, is easy to produce pollution release, influences Upper water's quality, and processing unit contained by whole system
Excessively, the up-front investments such as purchase, leased equipment are excessive, and need to occupy excessive construction site, are unfavorable for set bed mud improvement
The popularization and use of equipment.
Summary of the invention
Defect existing for equipment for existing processing river bottom mud heavy metal pollution, the purpose of the present invention is be to mention
For one kind, when handling river bottom mud heavy metal pollution, rate is fast, heavy metal adsorption is high-efficient, and occupied area it is small, can be totally-enclosed
The device of formula operation.
For it is existing processing river bottom mud heavy metal pollution technology there are the shortcomings that, another object of the present invention exists
In provide it is a kind of can effectively remove and recycle heavy metal in river bottom mud, and without destroying original ecosystem, without shutting off
Highly difficult technique does not cause the method for the processing river bottom mud heavy metal pollution of secondary pollution.
In order to realize technical purpose of the invention, the present invention provides a kind of in-situ treatment river bottom mud heavy metal pollutions
Device, the device include seal closure and stirring system；The seal closure is half envelope being made of cylinder and barrel top bottom plate
Closed type structure, the inner wall of the cylinder are equipped with heavy-metal adsorption material layer, and the bottom plate is equipped with heavy metallic activation agent entrance；Institute
The stirring system stated includes driving motor, drive rod and circular top plate, is connected between driving motor and circular top plate by drive rod
It connects, drive rod and circular top plate junction are equipped with gear transmission device；The circular top plate is arranged in cylinder interior, and with circle
Cylinder top bottom plate is parallel, is equipped at least two groups teeter column in the circular top plate vertically downward.
In preferred device, bottom of cylinder barrel is arranged to zigzag.It is inserted into river bottom mud convenient for seal closure, and advantageous
It is fixed in seal closure.
In preferred device, heavy-metal adsorption material layer is by buying the nanoporous pottery in Ge Feng tech materials Co., Ltd
At least one of porcelain composite material MA01, MF01 and MP01 are constituted.The heavy metals such as MA01 primary attachment cadmium, lead, mercury, copper, thallium,
The characteristics of MF01 primary attachment arsenic and lead, MP01 is that there is preferably absorption to make cadmium, lead, mercury, copper, thallium etc. in acid condition
With.Different nanoporous composite ceramic materials is selected according to different heavy metal pollution rivers.The nanometer that the present invention uses is more
Hole ceramic composite has hole prosperity (aperture is controllable in 15 nanometers to 200 nanometers), specific surface area height (up to 900m2/
G) the characteristics of, adsorption rate is high, adsorption capacity is big, and has the physicochemical stability of ceramics (acid and alkali-resistance, high temperature resistant, intensity are big)；
Simultaneously ceramic surface orderly and high density grafting have function machine group (different organic groups to different type heavy metal ion tool
Have orientation be complexed and selection suction-operated) organic molecule formed monolayer bonding, make it have fabulous selective absorption
The ability of target heavy metal ion.Preferred heavy-metal adsorption material is to the selectivity height of heavy metal, large amount of adsorption, a maximum huge sum of money
Belong to adsorption capacity up to 400g/kg, and possess good mechanical strength, it is safe and non-toxic it is harmless, without secondary pollution to environment, can be again
The advantages such as raw recycling.The nano-porous ceramic composite material that the present invention uses is using nano-porous ceramic as carrier, nano-pore
Hole inner surface has intensively modified the monolayer containing active function groups；Its working principle is that using ceramic monolith nano-pore is attached to
The effects of functional molecular in hole is to the absorption of heavy metal contaminants, complexing, chelating, is adsorbed and is trapped in heavy metal adsorption material
Material is internal, and heavy metal ion is fixed.
In preferred device, teeter column is equipped with several screw blades.Screw blade is conducive to improve river bottom mud stirring
Mass-transfer efficiency in the process improves mixed effect, is conducive to heavy metal release.
In preferred device, driving motor is arranged outside seal closure.
In preferred device, the central location of circular top plate is arranged in gear transmission device.
The device size of in-situ treatment river bottom mud heavy metal pollution of the invention can be according to the amount of processing bed mud come really
Fixed, general drum diameter is 0.1~2 meter, and corresponding primary sludge treating capacity is 0.1~8 cubic metre.
The present invention also provides a kind of method based on the device in-situ treatment river bottom mud heavy metal pollution, the party
Method is that the seal closure of described device is inserted perpendicularly into river bottom mud, opens driving motor, and driving motor is driven by drive rod
Circular top plate rotates, and the teeter column in circular top plate is stirred mixing to river bottom mud；Simultaneously from heavy metallic activation agent entrance
Heavy metallic activation agent is added, promotes heavy metal dissolution in bed mud, and inhaled by the inner wall heavy-metal adsorption material layer of seal closure cylinder
It is attached.
In preferred method, heavy metallic activation agent is citric acid solution of the pH in 2.5~3.5 ranges；The activation
Agent is 1~60L/ cubic metres with respect to the dosage of river bottom mud；Preferably 30~50L/ cubic metres.Debita spissitudo citric acid can promote
Heavy metal dissolution in river bottom mud.
In preferred scheme, driving motor revolving speed is controlled in 60~100r/min.Stirring rate appropriate can accelerate river
The heavy metal ion and heavy-metal adsorption material Contact-sorption of bed mud being sufficiently mixed and be conducive to dissolution.
In preferred scheme, for mixing time to handle bed mud volume metering, the mixing time of every cubic metre relatively bed mud is 1
~30min is more preferably 15~25min.
In preferred scheme, after heavy metal adsorption is complete, when extracting seal closure out from river bottom mud, drive rod is utilized
Circular top plate is pressed down against, smooth compaction treatment is carried out to the river bottom mud being stirred.Preferred scheme be conducive to by
Treated, and river bottom mud pattern restores, and prevents river downstream water secondary pollution.
In preferred scheme, the heavy-metal adsorption material layer for having adsorbed heavy metal is eluted by hydrochloric acid or EDTA solution
Recycle heavy metal.Recycling heavy metal process be will adsorb heavy metal ion nano-porous ceramic composite material hydrochloric acid or
The elution of EDTA solution, obtains the solution containing heavy metal ion, and regeneration nano-porous ceramic composite material is reused.Pass through hydrochloric acid
Or EDTA solution not only realizes the recycling of heavy metal, and regenerates nano-porous ceramic composite material, recycling, significantly
Reduce processing cost.Hydrochloric acid or EDTA solution concentration are suitably adjusted according to the amount of the heavy metal of heavy metal absorbent absorption
Section.
Compared with the prior art, technical solution of the present invention bring advantageous effects:
1, the device for the in-situ treatment river bottom mud heavy metal pollution that the present invention uses has good leakproofness, does not need
Shut off, the highly difficult construction such as cofferdam will not pollute downstream river during handling river bottom mud heavy metal, and locate
Reason river sludge is in-situ treatment, will not destroy the original ecology in river and large area occupies place around river.
2, heavy metal in river bottom mud can quickly, permanently be removed using the device of the invention.
3, the device of the invention takes Modular assembled, and convenient for operation, mobile, maintenance, use cost is low.
4, the method for processing river bottom mud heavy metal pollution of the invention can operate continuously, rate is fast, high-efficient, equipment and
Operation does not need to occupy large area place, and cost of investment is low, is adapted to the river bottom mud heavy metal processing of middle and small river.
5, technical solution of the present invention can not only remove the heavy metal in river bottom mud, and can recycle heavy metal,
Resource is set to be fully used；Nano-porous ceramic composite material is renewable simultaneously, and recycling is greatly reduced and is processed into
This.
Detailed description of the invention
[Fig. 1] is the schematic device of in-situ treatment river bottom mud heavy metal pollution；1 is seal closure, and 2 be cylindrical structure, 3
It is heavy-metal adsorption material layer for barrel top bottom plate, 4,5 be activator entrance, and 6 be driving motor, and 7 be drive rod, and 8 be circle
Shape top plate, 9 be gear transmission device, and 10 be teeter column, and 11 be screw blade；
[Fig. 2] is the process flow chart of the present patent application；
[Fig. 3] is nano-porous ceramic composite material sectional view: 12 be nano-porous ceramic, and 13 be nano-pore, 14 for containing
The monolayer of active function groups.
Specific embodiment
Following embodiment is intended to further illustrate the content of present invention, rather than limits the protection model of the claims in the present invention
It encloses.
Fig. 1 is the device of in-situ treatment river bottom mud heavy metal pollution of the invention；The device includes seal closure 1 and stirring
System；The seal closure 1 is the semi-enclosed structure being made of cylinder 2 and barrel top bottom plate 3, when handling river bottom mud
It can be directly by forming closed system, and 2 bottom of cylinder is arranged to zigzag, is used in the non-close end insertion bed mud of cylinder 2
Fixation of the device in river bottom mud；The inner wall of the cylinder 2 is equipped with heavy-metal adsorption material layer 4, and nano-porous ceramic is compound
Material is carrier with nano-porous ceramic 12, and 13 inner surface of nano-pore has intensively modified the monolayer containing active function groups, is used
To adsorb heavy metal ion；The bottom plate 3 is equipped with heavy metallic activation agent entrance 5, during handling bed mud, is used to cylinder
Add activator in 2 inside；The stirring system includes driving motor 6, drive rod 7 and circular top plate 8, driving motor 6 and circle
It is connected between shape top plate 8 by drive rod 7, gear transmission device 9, gear transmission dress is equipped between drive rod 7 and circular top plate 8
Set 9 central locations that circular top plate 8 is set；The circular top plate 8 is arranged inside cylinder 2, and with 2 top bottom plate of cylinder
3 is parallel, after driving motor 6 starts, drives circular top plate 8 to rotate by drive rod 7, and circular top plate 8 is equipped with multiple groups teeter column
10, teeter column 10 is stirred bed mud, and for teeter column 10 at least provided with more than two, teeter column 10 is equipped with screw blade.
Process with Fig. 1 device processing river bottom mud is: the seal closure of described device being inserted perpendicularly into river bottom mud, is opened
Open driving motor, driving motor drives circular top plate to rotate by drive rod, the teeter column in circular top plate to river bottom mud into
Row is stirred；Heavy metallic activation agent is added from heavy metallic activation agent entrance simultaneously, promotes heavy metal dissolution in bed mud, and close
The inner wall heavy-metal adsorption material layer of sealing cover cylinder adsorbs；After heavy metal adsorption is complete, sealing is being extracted out from river bottom mud
When cover, circular top plate is pressed down against using drive rod, smooth compaction treatment is carried out to the river bottom mud being stirred.
Embodiment 1
Heavy metal cadmium content is 4.3mg/kg in East Hunan bed mud in river, Zn content 652mg/kg, copper content are
210mg/kg, selecting diameter is the processing cylinder unit of 0.5m, and adsorbent material MA01, disposably handling sludge quantity is
0.78m3, the citric acid solution 40L that pH is 3.0 is added, controls driving motor 20min under the revolving speed of 80r/min.As MA01 inhales
Attached multi-metal ion reaches saturation, after MA01 being eluted with the EDTA solution that concentration is 1.5wt%, recycles heavy metal
Cadmium, zinc and copper, the adsorption capacity after MA01 regeneration reaches the 95% of original material, reusable, such as heavy metal of absorption from
Son amount is not up to saturated, and can be continued to use；
River bottom mud is passed through after once managing, the heavy metal cadmium content detected in bed mud in river is reduced to 0.5mg/kg, zinc
Content is reduced to 367mg/kg, copper content to be reduced to 130mg/kg.If repetitive operation is repeatedly handled on this basis, river
The removal rate of cadmium, zinc and copper can reach 95% or more in road bed mud.
Embodiment 2
Central Hunanprovince obtains that heavy metal cadmium content in bed mud is 8.6mg/kg, Zn content 761mg/kg, copper content are
234mg/kg, selecting diameter is the processing cylinder unit of 1m, and adsorbent material MP01, the disposable sludge quantity that handles is 3.14m3,
The citric acid solution 60L that pH is 3.0 is added, controls driving motor 30min under the revolving speed of 60r/min.If MP01 absorption
Multi-metal ion reaches saturation, after MP01 being eluted with the hydrochloric acid that concentration is 10wt%, recycles heavy metal cadmium, MP01 is again
Adsorption capacity after life reaches the 90% of original material, reusable, if the heavy metal ion amount of absorption is not up to saturated,
It can continue to use；
To river bottom mud by after single treatment, detect the heavy metal cadmium content in bed mud in river be reduced to 1.4mg/kg,
Zn content is reduced to 345mg/kg, copper content to be reduced to 146mg/kg.If repetitive operation is repeatedly handled on this basis,
The removal rate of cadmium, zinc and copper can reach 95% or more in river bottom mud.
Embodiment 3
Heavy metal cadmium content is 4.3mg/kg in East Hunan bed mud in river, lead content 852mg/kg, Zn content are
662mg/kg, selecting diameter is the processing cylinder unit of 0.5m, and adsorbent material is MF01+MP01 (mass ratio 1:1), disposable to locate
Reason sludge quantity is 0.78m3, the citric acid solution 20L that pH is 3.0 is added, controls driving motor under the revolving speed of 80r/min
20min.It can be 2.5wt% with concentration by MF01+ and MP01 if the MF01+ and MP01 heavy metal ion adsorbed reaches saturation
The elution of EDTA solution after, recycling heavy metal cadmium, lead and zinc, the adsorption capacity after MF01+ and MP01 regeneration reach original material
95%, it is reusable, such as absorption heavy metal ion not up to be saturated, can continue to use；
To river bottom mud by after single treatment, detect the heavy metal cadmium content in bed mud in river be reduced to 0.59mg/kg,
Lead content is reduced to 387mg/kg, Zn content to be reduced to 284mg/kg.If repetitive operation is repeatedly handled on this basis,
The removal rate of cadmium, lead and zinc can reach 95% or more in river bottom mud.
Embodiment 4
Various heavy metallic activation agent (are with soil containing heavy metal cadmium to heavy metal ions in soil result of extraction comparative experiments
Example is tested):
1, sampling spot: Hengyang City Hengdong County town: soil Cd content 17mgkg-1；
2, experiment reagent: heavy metallic activation agent: citric acid；Acetic acid；Tartaric acid；Ammonium acetate；Ammonium nitrate.
3, experimental procedure: 1), heavy metallic activation agent configuration: setting 0mmol/L, 1mmol/L, 5mmol/L, 10mmol/L,
Five concentration gradients of 15mmol/L, 20mmol/L.2) air-dried soil (crossing 80 meshes) 20g, is weighed to be placed in 250mL conical flask,
According to soil: water=1: 2.5, the agent of 50mL heavy metallic activation is added, then shakes 30min, filtering to plastic containers on the oscillator
In it is to be measured.
3), influence of the different heavy metallic activation agent to heavy metal-polluted soil Cd extraction efficiency at various concentrations:
Influence of the different heavy metallic activation agent various concentrations of table 1 to heavy metal-polluted soil Cd extraction efficiency
| Ammonium nitrate | Citric acid | Acetic acid | Tartaric acid | Ammonium acetate | |
| ■0mmol/l | 2.31% | 2.99% | 2.01% | 1.91% | 1.81% |
| ■1mmol/l | 7.90% | 6.32% | 12.86% | 6.43% | 5.44% |
| ■5mmol/l | 18.87% | 20.58% | 23.36% | 14.50% | 8.93% |
| ■10mmol/l | 40.61% | 36.71% | 32.12% | 32.40% | 12.04% |
| ■15mmol/l | 43.86% | 51.29% | 36.35% | 43.13% | 16.24% |
| ■20mmol/l | 45.63% | 54.06% | 45.76% | 41.51% | 21.96% |
Citric acid, acetic acid, ammonium nitrate and tartaric acid have certain extraction effect, acetic acid to heavy metal-polluted soil Cd as known from Table 1
Ammonium extraction effect is poor.With the raising of heavy metallic activation agent concentration, heavy metal-polluted soil Cd extraction yield is higher.Heavy metallic activation
When agent concentration is 5mmol/L, the optimal extraction yield of acetic acid is 23.36%；When heavy metallic activation agent concentration is 10mmol/L, nitric acid
The optimal extraction yield of ammonium is 40.61%；When heavy metallic activation agent concentration is 15mmol/L, the extraction yield of citric acid is 51.29%；
When heavy metallic activation agent concentration is 20mmol/L, the extraction yield of citric acid is 54.06%.As can be seen from Table 1 identical dense
Spending the lower relatively other heavy metallic activation agent of citric acid has the effect of that heavy metal in soil is preferably promoted to dissolve out.
Embodiment 5
The regeneration tests of nano-porous ceramic composite material:
MA01, MP01 and MF01 can be regenerated with EDTA and HCl, wherein can be restored using material adsorption capacity after EDTA regeneration
It the use of material adsorption capacity after regeneration of hydrochloric acid is initial 50% to initial 95%.After increase vacuumizes, it can restore to initial
The 70% of capacity.Experiment flow and data are as follows:
Experiment equipment and reagent:
Using test explanation is carried out for MA01 nano-porous ceramic composite material, prepared 200ppm is useless containing Cd
Water；
250mL triangular flask, 250mL beaker, 250mL graduated cylinder, 10mL pipette, dropper vibrate case, assay balance etc.；
1, experimental procedure:
1) 30 parts of MA01 2.00g, are accurately weighed respectively with assay balance in 30 cleaned 250mL triangular flasks, point
It 1. 2. 3. Bian Hao not be ...；
2) waste water containing Cd that 100mL prepared 200ppm, is measured with clean 250mL graduated cylinder, in 1 triangular flask,
Successively install 30 triangular flasks；
3), 2 triangular flask is put into oscillation case and is vibrated, revolving speed 130rpm, temperature is room temperature (21 DEG C or so), oscillation
2h；
4) 10mL in the test tube for, taking 3 water sample in being composed of 1. 2. 3. ..., remaining heavy metal-containing waste water pour into Sewage treatment
Bucket, as far as possible to the greatest extent, sample inspection；
5), 10.0mL6mol/L HCl or 1.5%EDTA solution is taken with the pipette of 10mL (take and separate when different liquids)
Respectively in the MA01 triangular flask being added after adsorbing, being placed in oscillation case, 130rpm, room temperature (21 DEG C or so) vibrates 1h；
6), the regenerated liquid in the above-mentioned triangular flask of oscillation is poured at wastewater collection, as far as possible to the greatest extent；
7) regenerated material in triangular flask, is cleaned with clear water, is respectively washed 5 times, then 1 time wash with distilled water, is vacuumized；
8) adsorption test again, is carried out, repeats 2~8；
Note: 1, the above experiment is completed in three batches；2, Cd solution used is matching while using, every batch of absorption in experimentation
Cd solution used is same, and while measuring every time measures the concentration of matched Cd solution simultaneously；
Test junction fruit and analysis
By testing to obtain data such as the following table 2 above:
Unit: mg/L
Absorption and desorption test data table of the 2 MA01 nano-porous ceramic composite material of table to heavy metal cadmium
Note: A1 is solution C d concentration after adsorbing for the first time, Cd concentration in regenerated liquid after R1 regenerates for first time, with such
It pushes away.
It performs an analysis to upper table data, calculates adsorbance and desorption rate, obtain result as shown in table 3 below.
Absorption and desorption test effect data of the 3 MA01 nano-porous ceramic material of table to heavy metal cadmium
2. test result analysis
First time adsorption effect reaches as high as 79%, minimum 37%, and average 57%；
In regeneration, EDTA effect preferably can reach 95%；
HCl effect is general, and the adsorbance in regenerative process is about the 50% of first time.
Claims (6)
1. a kind of method of in-situ treatment river bottom mud heavy metal pollution, it is characterised in that: utilize in-situ treatment river bottom mud weight
The device in-situ treatment river bottom mud heavy metal pollution of metallic pollution, described device includes seal closure and stirring system；Described
Seal closure is the semi-enclosed structure being made of cylinder and barrel top bottom plate, and the inner wall of the cylinder is equipped with heavy metal adsorption material
The bed of material, the bottom plate are equipped with heavy metallic activation agent entrance；The stirring system includes driving motor, drive rod and circular top
Plate is connected between driving motor and circular top plate by drive rod, and drive rod and circular top plate junction are equipped with gear transmission and fill
It sets；The circular top plate is arranged in cylinder interior, and parallel with barrel top bottom plate, in the circular top plate vertically downward
Equipped at least two groups teeter column；The seal closure of the device of the in-situ treatment river bottom mud heavy metal pollution is inserted perpendicularly into river
In bed mud, driving motor is opened, driving motor drives circular top plate to rotate by drive rod, and the teeter column in circular top plate is to river
Road bed mud is stirred mixing；Heavy metallic activation agent is added from heavy metallic activation agent entrance simultaneously, promotes heavy metal in bed mud molten
Out, and by the inner wall heavy-metal adsorption material layer of seal closure cylinder it adsorbs；
The heavy-metal adsorption material layer is by least one of nano-porous ceramic composite material MA01, MF01 and MP01 structure
At；
The heavy metallic activation agent is citric acid solution of the pH in 2.5~3.5 ranges；The activator is with respect to river bottom
The dosage of mud is 1~60L/ cubic metres；
The heavy-metal adsorption material layer for having adsorbed heavy metal carries out elution recycling heavy metal by hydrochloric acid or EDTA solution.
2. a kind of method of in-situ treatment river bottom mud heavy metal pollution according to claim 1, it is characterised in that: described
Driving motor revolving speed control in 60~100r/min；The time being stirred is measured with handling bed mud volume, and every cube relatively
The time that is stirred of rice bed mud is 1~30min.
3. a kind of method of in-situ treatment river bottom mud heavy metal pollution according to claim 1, it is characterised in that: to weight
After metal adsorption is complete, when extracting seal closure out from river bottom mud, circular top plate is pressed down against using drive rod, to stirring
The river bottom mud mixed carries out smooth compaction treatment.
4. a kind of method of in-situ treatment river bottom mud heavy metal pollution according to claim 1, it is characterised in that: described
Bottom of cylinder barrel be arranged to zigzag.
5. a kind of method of in-situ treatment river bottom mud heavy metal pollution according to claim 1, it is characterised in that: described
Teeter column be equipped with several screw blades.
6. a kind of method of in-situ treatment river bottom mud heavy metal pollution according to claim 1, it is characterised in that: described
Driving motor be arranged outside seal closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510976505.6A CN105478458B (en) | 2015-12-22 | 2015-12-22 | A kind of device and method of in-situ treatment river bottom mud heavy metal pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510976505.6A CN105478458B (en) | 2015-12-22 | 2015-12-22 | A kind of device and method of in-situ treatment river bottom mud heavy metal pollution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105478458A CN105478458A (en) | 2016-04-13 |
| CN105478458B true CN105478458B (en) | 2019-01-29 |
Family
ID=55665932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510976505.6A Active CN105478458B (en) | 2015-12-22 | 2015-12-22 | A kind of device and method of in-situ treatment river bottom mud heavy metal pollution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105478458B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480380B (en) * | 2018-03-26 | 2021-05-25 | 哈尔滨工业大学 | In-situ and ex-situ saline soil remediation method for ultrasonic deep leaching coupled nano rock composite modifier |
| CN112158938A (en) * | 2020-09-24 | 2021-01-01 | 湖南诚至环保科技有限公司 | River course heavy metal treatment system |
| CN113358591B (en) * | 2021-07-09 | 2023-01-31 | 王春莲 | Edible fungus detection metal detection device for food quality safety detection |
| CN114890643B (en) * | 2022-05-20 | 2023-06-13 | 长江水利委员会长江科学院 | Device and method for accelerating release and recycling of endogenous phosphorus in eutrophic water body |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101773928A (en) * | 2009-12-31 | 2010-07-14 | 东南大学 | In-situ solidification and segregation treatment method of heavy-metal industrial polluted field |
| CN103624071A (en) * | 2013-12-16 | 2014-03-12 | 华北电力大学 | System and method for repairing arsenic-polluted soil by virtue of cooperation of strong oxidation of semi-solid-phase Fenton and electro-dynamic power |
| CN103978022A (en) * | 2014-04-18 | 2014-08-13 | 杭州师范大学 | Device for soil heavy metal obstructing and control technology research |
| CN104525123A (en) * | 2014-12-12 | 2015-04-22 | 格丰科技材料有限公司 | Porous composite material for removing heavy metals in soil and preparation method thereof |
| CN104550208A (en) * | 2013-10-12 | 2015-04-29 | 中环循(北京)环境技术中心 | Farmland soil heavy metal pollution restoration method through coupling activating and passivating |
| CN104984989A (en) * | 2014-12-23 | 2015-10-21 | 格丰科技材料有限公司 | Method for removing active heavy metals from soil |
| CN205328831U (en) * | 2015-12-22 | 2016-06-22 | 湖南森美思环保有限责任公司 | River sediment heavy metal pollution's device is handled to normal position |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002254061A (en) * | 2001-02-28 | 2002-09-10 | Shimizu Corp | In situ clarification method and equipment for combined pollution soil |
| CN102985191B (en) * | 2010-08-10 | 2015-01-07 | 太平洋水泥株式会社 | Method for purifying cadmium-containing paddy soil |
-
2015
- 2015-12-22 CN CN201510976505.6A patent/CN105478458B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101773928A (en) * | 2009-12-31 | 2010-07-14 | 东南大学 | In-situ solidification and segregation treatment method of heavy-metal industrial polluted field |
| CN104550208A (en) * | 2013-10-12 | 2015-04-29 | 中环循(北京)环境技术中心 | Farmland soil heavy metal pollution restoration method through coupling activating and passivating |
| CN103624071A (en) * | 2013-12-16 | 2014-03-12 | 华北电力大学 | System and method for repairing arsenic-polluted soil by virtue of cooperation of strong oxidation of semi-solid-phase Fenton and electro-dynamic power |
| CN103978022A (en) * | 2014-04-18 | 2014-08-13 | 杭州师范大学 | Device for soil heavy metal obstructing and control technology research |
| CN104525123A (en) * | 2014-12-12 | 2015-04-22 | 格丰科技材料有限公司 | Porous composite material for removing heavy metals in soil and preparation method thereof |
| CN104984989A (en) * | 2014-12-23 | 2015-10-21 | 格丰科技材料有限公司 | Method for removing active heavy metals from soil |
| CN205328831U (en) * | 2015-12-22 | 2016-06-22 | 湖南森美思环保有限责任公司 | River sediment heavy metal pollution's device is handled to normal position |
Non-Patent Citations (2)
| Title |
|---|
| 柠檬酸对铬污染不同质地土壤萃取与淋洗的研究;姜晓琪等;《中国农学通报》;20121231;第28卷(第2期);第278-281页 |
| 森美思河道底泥重金属五种专利治理技术;无;《湖南森美思环保，http://www.hnsammns.com/fuwuzhichi/wwerw/6af7f1d3-04f9-40d3-8239-e12739cba0bf.html》;20151030;第1-4页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105478458A (en) | 2016-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105478458B (en) | A kind of device and method of in-situ treatment river bottom mud heavy metal pollution | |
| CN201848424U (en) | Contaminated soil leaching remediation equipment | |
| CN102172614B (en) | Ex-situ washing remediation method for nitrochlorobenzene-contaminated soil | |
| CN102745872B (en) | Treatment method and device for riverway and lake heavy metal pollution bottom sludge | |
| CN105618472B (en) | A kind of permanent method for removing available heavy metal in heavy-metal contaminated soil | |
| CN103979749B (en) | A kind for the treatment of apparatus and processing method thereof of removing heavy metal in sewage | |
| CN104528863B (en) | Surfactant-modified attapulgite is removed the method for heavy metal in percolate | |
| CN107285419A (en) | Pass through the method for treating water and corresponding factory of active carbon adsorption and purification | |
| CN110202162A (en) | Using the method for the vulcanization repairing hexavalent chromium polluted underground water of Nanoscale Iron | |
| CN103990646A (en) | Leaching apparatus for arsenic-contaminated soil and treatment method for arsenic-contaminated soil | |
| Ali et al. | Sustainable use of concrete demolition waste as reactive material in permeable barrier for remediation of groundwater: batch and continuous study | |
| CN102303042B (en) | Circulation washing system device and method for polluted soil washing and repair | |
| CN104692531A (en) | Underground water heavy metal pollution remediation device | |
| CN205328831U (en) | River sediment heavy metal pollution's device is handled to normal position | |
| CN103286122A (en) | Leaching restoration engineered apparatus for persistent organic pollutant-contaminated site | |
| KR20030087915A (en) | Method for purifying a layer of contaminated soil and apparatus | |
| Abd Ali et al. | Numerical modeling of performance of olive seeds as permeable reactive barrier for containment of copper from contaminated groundwater | |
| KR20120064803A (en) | Hybrid type soil washing facility and method for separation and remediation of contaminated soil | |
| CN202785919U (en) | Heavy metal polluted sediment processing device for river courses and lakes | |
| CN105854847A (en) | Preparation method and application of suspension type material of starch modified nanoscale zero-valent iron | |
| Kushwaha et al. | Utilization of metal industry solid waste as an adsorbent for adsorption of anionic and cationic dyes from aqueous solution through the batch and continuous study | |
| Abdulhusain et al. | Green approach for fabrication of sand-bimetallic (Fe/Pb) nanocomposite as reactive material for remediation of contaminated groundwater using permeable reactive barrier | |
| CN105621824B (en) | A method of it is in situ to administer river bottom mud heavy metal | |
| CN216175295U (en) | In-situ remediation structure for contaminated site soil | |
| CN107175065A (en) | A kind of processing of organo-mineral complexing Contaminated Loess leacheate and reuse method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |