CN108218171A - The in-situ remediation method of huge reservoir polluted bed mud under a kind of anaerobic in low temperature environment - Google Patents
The in-situ remediation method of huge reservoir polluted bed mud under a kind of anaerobic in low temperature environment Download PDFInfo
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- CN108218171A CN108218171A CN201810118512.6A CN201810118512A CN108218171A CN 108218171 A CN108218171 A CN 108218171A CN 201810118512 A CN201810118512 A CN 201810118512A CN 108218171 A CN108218171 A CN 108218171A
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- Prior art keywords
- anaerobic
- low temperature
- bed mud
- situ
- degradation
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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
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- 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
- C02F11/006—Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
Abstract
The invention discloses a kind of in-situ remediation method of huge reservoir polluted bed mud under anaerobic in low temperature environment, including 1）Prepare iron charcoal retention biochemical unit；2）Prepare anaerobic in low temperature bacterium degradation unit；3）Several are covered on huge reservoir bed mud, and be fixed with timber side by side by the in-situ sediment remediation system that iron charcoal retention biochemical unit and anaerobic in low temperature bacterium degradation unit synthesize；Advantage：The polluter of huge reservoir bed mud shallow-layer can be effectively adsorbed, and pass through the degradation of anaerobic in low temperature degradation bacteria, achieve the effect that denitrogenation dephosphorizing.Realize the purpose to huge reservoir in-situ sediment remediation, and the repair system does not consume energy in operation, it is simple in structure, it is easy to operation, it is easy to maintenance.
Description
Technical field
The present invention relates to a kind of in-situ remediation methods of huge reservoir polluted bed mud under anaerobic in low temperature environment, belong to lake
Library polluted bed mud processing technology field.
Background technology
There is a large amount of pollutant in lake and reservoir, such as heavy metal, persistence organic pollutant, nitrogen and phosphorous nutrient etc. sink
For product in bed mud in the case of changes in environmental conditions, the pollutant in bed mud can be again introduced into overlying water, cause secondary dirt
Dye.And the polluter in bed mud only has the synergistic effect decomposed by contact precipitation, absorption and microbiological oxidation can be thorough
Removal, but since the environment residing for the bed mud of lake and reservoir is mostly low temperature, anaerobic environment, many microorganisms in bed mud
Normal oxygenolysis can not be carried out, and some existing sludge organism treatment technologies are mainly sufficient in room temperature, oxygen content
Under the conditions of carry out, in the in-situ sediment remediation for not being suitable for Hu Ku, and then can not to the pollution in lake and Reservoir Sediment
Substance is thoroughly removed.At present, some common in-situ remediation methods mainly precipitate and absorption, these methods are dirty
Dye object is moved to from bed mud in matrix, is not removal pollutant truly, is only passed through some heterotrophic microorganisms
Oxidative degradation, can just be finally reached from bed mud remove pollutant purpose.
At present, the research of the technology and methods in relation to lake and Reservoir Sediment in-situ immobilization is more, but is lacked there is also more
It falls into.For example, Publication No. CN102757129B discloses in-situ ecological restoration method for riverway polluted sediment, this method is proposed in dirt
Three layer concretes of covering above bed mud are contaminated, and the mode for combining planting plants is repaired.Heavy metal is blocked, adsorbed by this method
In concrete, then by plants enriched, water environment is detached from eventually by harvesting.But this method treatment effeciency is low；
And some high price heavy metals have higher environmental ecology risk；In addition, the connection design of covering brick increases construction hardly possible
Degree.CN101786720A discloses a kind of administering method of river polluted bed mud, and party's normal direction polluted river input oxidant makes
Bed mud surface layer is in oxidation state, promotes the growth of aerobic microbiological, improves degradation efficiency of the microorganism to organic pollution.But add
The medicament added can be migrated with flow, be diluted, and reduce the effect of improvement；And chemical agent has water body the wind of secondary pollution
Danger.Publication No. CN106673384A discloses a kind of heavy metal pollution of water body deposit covering restorative procedure in situ.This method
The different coating of three kinds of materials is laid on river bottom mud, according to the depth of water body and water velocity selection combination, conjugate
Reason, chemistry, biological prosthetic means, eliminate the pollutant in bed mud.But this method is to the adsorption efficiency of the pollutant in bed mud
The bottom of compared with, and the preparation of cerium modified zeolite is more complicated, whole implementation get up it is comparatively laborious, do not account for yet subsequent material return
Receive Utilizing question.
Since there are the pollutions such as a large amount of heavy metal, persistence organic pollutant, nitrogen and phosphorous nutrient in lake library at this stage
Substance, and the bed mud local environment of Hu Ku is more severe, thus the pollutant in bed mud is difficult to thoroughly remove.When lake bottom storehouse mud
In pollutant release, generate secondary pollution when, serious threat will be brought to water ecological environment.It is but this currently for lake library
In-situ sediment remediation technology under low temperature, anaerobic environment, which is not much, sees.
Invention content
The present invention proposes a kind of in-situ remediation method of huge reservoir polluted bed mud under anaerobic in low temperature environment, purpose purport
Lack in the low temperature for overcoming the problems, such as current Hu Ku, the in-situ sediment remediation technology under anaerobic environment, there is high treating effect, fortune
Row is flexible, environmental-friendly, easy for construction, consumes energy the features such as low.
The technical solution of the present invention：The in-situ immobilization side of huge reservoir polluted bed mud under a kind of anaerobic in low temperature environment
Method includes the following steps：
1）Iron charcoal retention biochemical unit is prepared, is made of Carbon Fibre Textile framework filling iron charcoal, Carbon Fibre Textile framework
Size is determined according to the area and pollution level of in-situ immobilization bed mud；
2）Anaerobic in low temperature bacterium degradation unit is prepared, by the hollow bionic plant filler of combination of several load anaerobic in low temperature degradation bacterias
It forms, and unit of degrading is fixed on to the top of iron charcoal retention biochemical unit；
3）Synthesis, by the in-situ sediment remediation system that several retain biochemical unit by iron charcoal and anaerobic in low temperature bacterium degradation unit synthesizes
System is covered on huge reservoir bed mud, and be fixed with timber side by side；During pollutant in bed mud discharges upwards, pass sequentially through
Iron charcoal retains biochemical unit and anaerobic in low temperature bacterium degradation unit is adsorbed and degraded.
Advantages of the present invention：
1）Fe-C micro electrolysis effect can make many macromolecular organic pollutions that redox occur, and chain rupture improves bed mud
Biochemical degree, assist in removing organic matter；
2）Iron charcoal improves the suction-operated to larger molecular organics and heavy metal with abundant gap；
3）The large specific surface area of enhanced polyacrylonitrile doughnut can adhere to a large amount of microorganisms, can be to the dirt of Nitrogen In Sediment phosphorus
Dye substance is rapidly and efficiently degraded；
4）The degradation efficiency of dominant degradation bacteria filtered out by anaerobic in low temperature is high, improves contaminant removal efficiency；
5）Low, easy to use, the function-stable of operation energy consumption that this method makes, management are simple.
Description of the drawings
Fig. 1 is a kind of Principle of Process signal of the in-situ remediation method of huge reservoir polluted bed mud under anaerobic in low temperature environment
Figure.
Fig. 2 is huge reservoir anaerobic in low temperature in-situ sediment remediation system and device sectional view.
Fig. 3 is iron charcoal retention biochemical unit structure diagram.
Fig. 4 is anaerobic in low temperature bacterium degradation cellular construction schematic diagram.
Fig. 5 is single enhanced polyacrylonitrile doughnut structure diagram.
In figure 1 be timber, 2 be shackle, 3 be in flakes formula in-situ remediation system device, 4 be ABS supporting rods, 5. combination it is hollow
Bionic plant filler, 6 be plastic disks clinching, 7 be hydroformylation fibre synthetic fibre, 8 be Carbon Fibre Textile, 9 be iron charcoal, 10 be iron charcoal retention
Biochemical unit, 11 be enhanced polyacrylonitrile doughnut, 12 be anaerobic in low temperature bacterium degradation unit, 13 be nylon cable tie.
Specific embodiment
The technical solution of the present invention is further described below in conjunction with the accompanying drawings：
As shown in drawings, under anaerobic in low temperature environment huge reservoir polluted bed mud in-situ remediation method, be to repair formula in flakes in situ
Complex system device 3 is covered on the bed mud for needing to carry out in-situ immobilization, and main form of construction work is：Anaerobic in low temperature bacterium is degraded single
After member 12 and the retention connection of biochemical unit 10 of iron charcoal fix, the device that several are fixed is placed into reservoir with crane
In, then with shackle 2 interconnected the Carbon Fibre Textile 8 on all devices, and be fixed with timber 1；Iron charcoal retains
Biochemical unit 10 is made of 8 framework of Carbon Fibre Textile filling iron charcoal 9, and the size of 8 framework of Carbon Fibre Textile is repaiied according in situ
The area and pollution level of multiple bed mud determine；Anaerobic in low temperature bacterium degradation unit 12 is by several load anaerobic in low temperature degradation bacterias
It combines hollow bionic plant filler 5 to form, and anaerobic in low temperature bacterium degradation unit 12 is fixed on iron charcoal retention biochemical unit 10
Top.During pollutant in bed mud discharges upwards, iron charcoal retention biochemical unit 10 and anaerobic in low temperature bacterium degradation unit are passed sequentially through
12 are adsorbed and are degraded.
The size of iron charcoal retention biochemical unit 10 for 200cm × 200cm × 8cm, 200cm × 150cm × 10cm or
150cm×150cm×12cm.The aperture of 8 framework of Carbon Fibre Textile is 1cm, is slightly less than 9 diameter of iron charcoal of filling.
Iron charcoal 9, a diameter of 2-3cm or so is formed by iron and charcoal high temperature sintering, and iron charcoal mass ratio is 6：1, when iron charcoal soaks
When entering in overlying water, following electrochemical reaction occurs：
Anode：
Cathode：
With many components in huge reservoir bed mud redox reaction occurs for the active constituent of generation, makes organic macromolecule material
Chain-scission degradation improves biochemical degree, be equivalent to for subsequent anaerobic in low temperature bacterium degrade unit 12 degradation reaction provide it is pre-
Processing helps to eliminate organic matter.
Anaerobic in low temperature degradation bacteria is screened by anaerobic in low temperature, cultivated, is enriched with, natural membrane and artificial biofilm are combined
Mode is loaded on the hollow bionic plant filler 5 of combination.Detailed process is：By the dirt in the anaerobic pond in neighbouring sewage treatment plant
A mud acquisition part, 4CoIt preserves, the overlying water for taking huge reservoir bottom is screening and culturing medium, and suitable mud sample is seeded in training
Support base, 5CoShaken cultivation 7 days pipettes culture solution by 2% inoculum concentration, is transferred in new culture medium, 7d is cultivated under the same terms,
After being repeated 2 times, culture solution is taken to be coated on culture medium flat plate after appropriate be serially diluted and is isolated and purified.Occurred according to bacterium colony
Time, form are separately cultured out dominant strain in low temperature environment, then by the dominant strain enrichment culture turned out and connect
Kind, it is finally loaded in a manner that natural membrane and artificial biofilm are combined on the hollow bionic plant filler 5 of combination.
It is to imitate water plant leaf using enhanced polyacrylonitrile hollow fiber bundle 11 to combine hollow bionic plant filler 5,
The ABS material for being 80cm with length does supporting rod 4, imitates water plant stem；Enhanced poly- third is fixed using plastic disks clinching 6
Alkene nitrile hollow fiber bundle 11, enhanced polyacrylonitrile hollow fiber bundle 11 is pressed on the outer ring of plastic disks clinching 6, is allowed to uniform
Distribution；5cm is spaced on each supporting rod 4 and fixes one week fibre bundle 11, combined at upper and lower two layers hollow bionic plant filler 5 it
Between, wrap up ABS supporting rods 4 with hydroformylation fibre synthetic fibre 7.The inside of enhanced polyacrylonitrile doughnut 11 is hollow, is tree.
Anaerobic in low temperature bacterium degradation unit 12 will combine hollow 5 kinds of plants of bionic plant filler by the nylon cable tie 13 of belt lock catch
To 8 top of Carbon Fibre Textile, combine hollow bionic plant filler 5 and be spaced 10cm, combine the increasing on hollow bionic plant filler 5
Strong type polyacrylonitrile hollow fiber beam 11 scatters in water, radial to stretch around, a diameter of after fibre bundle 11 scatter
10cm is not wound between each other, is not knotted.
In-situ sediment remediation system is connected two-by-two with retaining ring 2 side by side, is covered on huge reservoir bed mud, outermost four
Timber 4 is inserted at a angle, and fixation entirely connects sheet of repair system.
In-situ sediment remediation system in the invention includes two steps to the removal of the pollutant in bed mud：
1）Polluter in bed mud during upward release, make by the retention for retaining biochemical unit 10 by iron charcoal first
With some larger molecular organics and substance difficult to degrade are trapped, the active material and bed mud that the effect of 9 light electrolysis of iron charcoal generates
Redox occurs for many macromolecular organic pollutions of release, is allowed to chain rupture, improves biochemical degree, is subsequent low
The degradation of warm anaerobic degrading bacteria degradation unit 12 provides pretreatment；
2）The effect of the anaerobic in low temperature degradation bacteria on hollow bionic plant filler 5 is further combined by being attached to, it is a large amount of dirty
Dye substance is degraded, and achievees the effect that denitrogenation dephosphorizing, so as to fulfill the purpose to huge reservoir in-situ sediment remediation.
Claims (8)
1. the in-situ remediation method of huge reservoir polluted bed mud under a kind of anaerobic in low temperature environment, it is characterised in that this method is included such as
Lower step：
1）Iron charcoal retention biochemical unit is prepared, is made of Carbon Fibre Textile framework filling iron charcoal, Carbon Fibre Textile framework
Size is determined according to the area and pollution level of in-situ immobilization bed mud；
2）Anaerobic in low temperature bacterium degradation unit is prepared, by the hollow bionic plant filler of combination of several load anaerobic in low temperature degradation bacterias
It forms, and unit of degrading is fixed on to the top of iron charcoal retention biochemical unit；
3）Synthesis, by the in-situ sediment remediation system that several retain biochemical unit by iron charcoal and anaerobic in low temperature bacterium degradation unit synthesizes
System is covered on huge reservoir bed mud, and be fixed with timber side by side；During pollutant in bed mud discharges upwards, pass sequentially through
Iron charcoal retains biochemical unit and anaerobic in low temperature bacterium degradation unit is adsorbed and degraded.
2. the in-situ remediation method of huge reservoir polluted bed mud under a kind of anaerobic in low temperature environment according to claim 1,
Be characterized in the size of the iron charcoal retention biochemical unit for 200cm × 200cm × 8cm, 200cm × 150cm × 10cm or
150cm×150cm×12cm；The aperture of Carbon Fibre Textile framework is 1cm, is slightly less than the iron charcoal diameter of filling.
3. the in-situ remediation method of huge reservoir polluted bed mud under a kind of anaerobic in low temperature environment according to claim 1,
It is characterized in the iron charcoal, a diameter of 2-3cm is formed by iron and charcoal high temperature sintering, and iron charcoal mass ratio is 6：1, when iron charcoal soaks
When entering in overlying water, following electrochemical reaction occurs：
Anode：
Cathode：
With many components in huge reservoir bed mud redox reaction occurs for the active constituent of generation, makes organic macromolecule material
Chain-scission degradation improves biochemical degree, is equivalent to and provides pretreatment for the degradation reaction of subsequent anaerobic in low temperature degradation bacteria, has
Help eliminate organic matter.
4. the in-situ remediation method of huge reservoir polluted bed mud under a kind of anaerobic in low temperature environment according to claim 1,
Be characterized in the anaerobic in low temperature degradation bacteria be screened, cultivated by anaerobic in low temperature, is enriched with, natural membrane is mutually tied with artificial biofilm
The mode of conjunction is loaded on the hollow bionic plant filler of combination, and detailed process is：
1) sludge in the anaerobic pond in neighbouring sewage treatment plant is acquired into a part, is preserved under the conditions of 4 DEG C, take deep water water
The overlying water in bottom storehouse portion is screening and culturing medium；
2) mud sample is seeded in culture medium, shaken cultivation 7 days, pipettes culture solution by 2% inoculum concentration, be transferred to new training at 5 DEG C
It supports in base, cultivates 7d under the same terms, be repeated 2 times；
3) culture solution is taken to be coated on culture medium flat plate after being serially diluted to be isolated and purified；According to the time of bacterium colony appearance, shape
State is separately cultured out dominant strain in low temperature environment, then by the dominant strain enrichment culture turned out and is inoculated with, finally adopts
It is loaded on the hollow bionic plant filler of combination with the mode that natural membrane and artificial biofilm are combined.
5. the in-situ remediation method of huge reservoir polluted bed mud under a kind of anaerobic in low temperature environment according to claim 1,
It is to imitate water plant leaf using enhanced polyacrylonitrile hollow fiber bundle to be characterized in the hollow bionic plant filler of combination,
The ABS material for being 80cm with length does supporting rod, imitates water plant stem；Using plastic disks clinching anchoring fiber beam, fiber
Silk is pressed on the outer ring of ring, is uniformly distributed fibre bundle；5cm is spaced on each supporting rod and fixes one week fibre bundle, upper and lower
Between two layers of bionic plant filler, ABS material is wrapped up with hydroformylation fibre synthetic fibre;During the inside of enhanced polyacrylonitrile doughnut is
Sky is tree.
6. the in-situ remediation method of huge reservoir polluted bed mud under a kind of anaerobic in low temperature environment according to claim 1,
It is characterized in that the anaerobic in low temperature bacterium degradation unit will combine hollow bionic plant filler by the nylon cable tie of belt lock catch and plant
To above Carbon Fibre Textile, filler interval 10cm, the fibre bundle combined on hollow bionic plant filler scatters in water, in putting
It penetrates shape to stretch around, after fibre bundle scatter, a diameter of 10cm does not wind, do not knot between each other.
7. the in-situ remediation method of huge reservoir polluted bed mud under a kind of anaerobic in low temperature environment according to claim 1,
It is characterized in that the in-situ sediment remediation system is connected two-by-two with retaining ring side by side, is covered on huge reservoir bed mud, in outermost
Four angles be inserted into timber, fixation entirely connect sheet of repair system.
8. the in-situ remediation method of huge reservoir polluted bed mud under a kind of anaerobic in low temperature environment according to claim 1,
It is characterized in that in-situ sediment remediation system includes two steps to the removal of the pollutant in bed mud：
1）Polluter in bed mud adsorbs the crown_interception of biochemical unit by iron charcoal during upward release, some
Larger molecular organics and substance difficult to degrade are trapped, the active material of Fe-C micro electrolysis effect generation and being permitted for sediment release
Redox occurs for much molecular organic pollutants, is allowed to chain rupture, improves biochemical degree, degrades for subsequent anaerobic in low temperature
The degradation of bacterium provides pretreatment；
2）The effect of the anaerobic in low temperature degradation bacteria on hollow bionic plant filler is further combined by being attached to, it is a large amount of to pollute
Substance is degraded, and achievees the effect that denitrogenation dephosphorizing, so as to fulfill the purpose to huge reservoir in-situ sediment remediation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810118512.6A CN108218171B (en) | 2018-02-06 | 2018-02-06 | In-situ remediation method for polluted bottom mud of deep water reservoir in low-temperature anaerobic environment |
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|---|---|---|---|
| CN201810118512.6A CN108218171B (en) | 2018-02-06 | 2018-02-06 | In-situ remediation method for polluted bottom mud of deep water reservoir in low-temperature anaerobic environment |
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| CN108218171B CN108218171B (en) | 2021-04-13 |
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| CN1382649A (en) * | 2002-05-31 | 2002-12-04 | 上海城市污染控制工程研究中心 | Process for treating used water difficult to degradate by catalytic internal electrolysis of iron |
| CN101274811A (en) * | 2007-03-28 | 2008-10-01 | 独立行政法人国立高等专门学校机构 | Method for decomposing and removing substrate sludge in environment water |
| CN103172228A (en) * | 2013-03-01 | 2013-06-26 | 同济大学 | In-situ repair method of bottom mud in city watercourse |
| CN104829067A (en) * | 2015-05-28 | 2015-08-12 | 河海大学 | Active iron purifier and bank slope wetland system coupled purifying culture pond drainage system |
| CN105502867A (en) * | 2016-02-06 | 2016-04-20 | 广东灵捷制造化工有限公司 | Method for treating black and odorous water body bottom mud through microelectrolysis material |
| CN106365389A (en) * | 2016-11-11 | 2017-02-01 | 广州资源环保科技股份有限公司 | Artificial wetland purifying treatment system applicable to urban black and odorous river courses |
| CN107473392A (en) * | 2017-10-09 | 2017-12-15 | 浙江华庆元生物科技有限公司 | The microorganism pasture and water of composite bacteria agent and the preparation method and Ecosystem restoration system of the microorganism pasture and water of composite bacteria agent |
-
2018
- 2018-02-06 CN CN201810118512.6A patent/CN108218171B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1382649A (en) * | 2002-05-31 | 2002-12-04 | 上海城市污染控制工程研究中心 | Process for treating used water difficult to degradate by catalytic internal electrolysis of iron |
| CN101274811A (en) * | 2007-03-28 | 2008-10-01 | 独立行政法人国立高等专门学校机构 | Method for decomposing and removing substrate sludge in environment water |
| CN103172228A (en) * | 2013-03-01 | 2013-06-26 | 同济大学 | In-situ repair method of bottom mud in city watercourse |
| CN104829067A (en) * | 2015-05-28 | 2015-08-12 | 河海大学 | Active iron purifier and bank slope wetland system coupled purifying culture pond drainage system |
| CN105502867A (en) * | 2016-02-06 | 2016-04-20 | 广东灵捷制造化工有限公司 | Method for treating black and odorous water body bottom mud through microelectrolysis material |
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