CN104876340B - A kind of permeable reactive barrier repaired for underground water pollution and processing method thereof - Google Patents
A kind of permeable reactive barrier repaired for underground water pollution and processing method thereof Download PDFInfo
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- CN104876340B CN104876340B CN201510283887.4A CN201510283887A CN104876340B CN 104876340 B CN104876340 B CN 104876340B CN 201510283887 A CN201510283887 A CN 201510283887A CN 104876340 B CN104876340 B CN 104876340B
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Abstract
The invention belongs to underground water pollution and repair field, a kind of permeable reactive barrier repaired for underground water pollution and processing method thereof.This permeable reactive barrier includes being may penetrate into waterwall (1) by upstream, permeable brick wall (3) institute filtering out waterwall (2) and both sides in downstream forms wall chamber (4), it is provided with dividing plate (5) in described wall chamber (4), the upper space of described wall chamber (4) is divided into reaction zone (4 1) and enhancement microbiological enrichment region (4 2) by described dividing plate (5), and described reaction zone (4 1) connect with the bottom of enhancement microbiological enrichment region (4 2).Treatment sewage is flow through from described permeable reactive barrier by the method.It is little that this permeable reactive barrier and processing method have the impact on environment, easy and simple to handle, and processing cost is low, stable, effective, the advantage of non-secondary pollution.
Description
Technical field
The invention belongs to underground water pollution repair field, a kind of for underground water pollution repair can
Permeable reactive wall and processing method thereof.
Background technology
Subsoil water is a kind of important freshwater resources and drinking water source, has the highest economic valency
Value and the ecological value, be that the mankind depend on for existence and the important foundation of social development.
In recent years, China drastically expands in city, causes urban wastewater discharge to roll up, by
Not enough in fund input, pipeline network construction relatively lags behind, maintaining not in time, pipe network model is led
Cause sewage exosmoses, and is partially into body of groundwater, and rain dirt shunting is not thorough, and flood season, sewage was with rainwater
Overflow, causes underground water pollution.
Part industry descends water environment safety threateningly, the predominantly work of underground water pollution outstanding problem
Industry hazardous waste is stored up, garbage loading embeading, mining, petroleum chemical industry produce and (include surveying
Visit and develop, process, store and sell) etc..
Country's major scientific and technological project, Country science and technology plan, local plan of science and technology are paid much attention to and prop up
Hold the correlational studyes such as underground water pollution preventing and treating, around the preventing and treating of subsoil water risk of drinking water pollution, typical case
The contents such as place underwater prevention, underground water pollution reparation, continue to increase input in science and technology, promote
Underground water pollution prevents and treats scientific and technological level.
The method of current domestic underground water pollution control has physical control, chemical redemption, electric power
Learn the technology such as reparation, extracting process.
Extracting processes, i.e. groundwater extraction to earth's surface, through conventional physics, chemistry, biology
After process, recharge underground.Although pump-and-treat system is widely used in groundwater remediation, but make
For a kind of long-term Groundwater Treatment Methods, having the disadvantage in that 1. extracting processes can only limit
The diffusion polluted, it is impossible to fundamentally remove pollution components, in particular for nonaqueous phase liquid,
Pumping almost cannot be removed；2. pumping needs lasting energy supply for a long time, meanwhile, is
The maintenance of system too increases the cost of pollution amelioration with monitoring；3. can not close polluter, also without
The diffusion of method limit pollution plumage.
Therefore, the shortcoming for above-mentioned processing method and other showering technology uses a kind of energy
Enough fix or degradation of contaminant, thus the method reaching to remove groundwater pollutant is very must
Want.
Summary of the invention
Not enough for prior art, the present invention provide that a kind of underground water pollution repairs permeable instead
Answering wall and processing method thereof, this permeable reactive barrier and processing method have the impact on environment
Little, easy and simple to handle, processing cost is low, stable, respond well, non-secondary pollution excellent
Point.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is:
A kind of permeable reactive barrier repaired for underground water pollution, may penetrate into including by upstream
Waterwall, permeable brick wall the formed wall chamber filtering out waterwall and both sides, downstream, described
Wall intracavity is provided with dividing plate, and the upper space in described wall chamber is divided into reaction zone with strong by described dividing plate
Changing microorganism enrichment region, described reaction zone connects with the bottom of enhancement microbiological enrichment region；Described
It is provided with mixing mud packed bed in reaction zone, is provided with for attached in described enhancement microbiological enrichment region
The combined stuffing of multiple-microorganism.
Preferred version, it is 400mm-450mm that described upstream may penetrate into the thickness of waterwall, material
For cobble, particle diameter is 32-64mm.Block pattern row pattern after packing with the gunny of 400 × 300mm.
Preferred version, the permeable thickness filtering out waterwall in described downstream is 600-650mm,
Material is activated carbon and active sand, and particle diameter is 8-16mm.Wherein, activated carbon and active sand
Quality proportioning is preferably 1:1, block pattern row pattern after packing with the gunny of 400 × 600mm.
Preferred version, described two brick-on-edge walls are common brick mix structure, and thickness is 400-500mm.
Preferred version, described reaction zone accounts for the 1/3-1/2 of whole wall chamber volume.
Preferred version, described mixing mud packed bed by the marsh mud of moisture content >=80%,
Granularity iron filings between 0.5-0.7mm, particle diameter are that the broken Pericarpium Musae of 3-4mm, particle diameter are
The rice husk charcoal of 1-2mm, particle diameter are the wood flour composition of 0.4-0.6mm, and its mass ratio is:
Marsh mud: iron filings: broken Pericarpium Musae: rice husk charcoal: wood flour=1:(0.8-1.2):
(0.4-0.6):(0.4-0.6):(0.4-0.6)。
Further preferably, it is respectively arranged with sampling in described reaction zone and described microorganism enrichment region
Pipe.
Further preferably, described permeable reactive barrier top is provided with removable cover.
Further preferably, described combined stuffing is ZH type combined fiber filler.
A kind of permeable reactive barrier processing method repaired for underground water pollution, by pending dirt
Water flows through from described permeable reactive barrier, flow through successively upstream may penetrate into waterwall reaction zone,
Enhancement microbiological enrichment region and downstream is permeable filters out waterwall；Described enhancement microbiological enrichment region
Combined stuffing on be attached with multiple-microorganism flora；Control the microorganism species of whole wall intracavity
Quantity more than 1,200,000,000/gram water；Controlling whole wall intracavity bed mud concentration is:
10g/L-15g/L；The content controlling whole wall intracavity microorganism is containing 2-4 in every 1000mL water
Gram microorganism；The pH controlling wall intracavity is 3-6, dissolved oxygen DO=0mg/L.
Described microorganism species includes: Methanobacterium (methagen),
Peseudomonas SP (pseudomonas), Flavobacterium SP (Flavobacterium),
Aeromonas SP (aeromonas), Desulfovibrio (desulfovibrio), Candida
(candida mycoderma), Penicillium (penicillium), Sulfate-Reducing Bacteria
(desulfurization salt reducing bacteria), Enterobacter cloacae (bacillus cloacae), Ferrooxidans
(ferrum Thiobacillus), Bacillus amyloli quefaciens (bacillus),
Alcaligenes faecalis (Alcaligenes), Corynebacterium
Hydrocarboclastus (corynebacterium), Lactobacillus bulgaricus (breast
Bacillus), Bacillus amyloli quefaciens (bacillus), Micrococus
(Micrococcus), Enterobacter Desalfurieans (intestinal aerobacteria),
Desulfovibrio Desalfurieans (going iodine vibrio), Chemolithoautotrophic
(changing can be organic different for (changing the inorganic autotrophy Pseudomonas of energy) and Chemoorganoheterotrophic
Bacteria belongs to).
Compound enzyme secreted by enhancement microbiological flora includes cellulase, hydrolysis exoenzyme, shallow lake
Powder enzyme, dehydrogenase, oxygenase, dioxygenase etc..
Below the present invention it is further explained and illustrates:
The enhancement microbiological compound enzyme that a kind of underground water pollution that the present invention provides is repaired is permeable
Reaction wall and method, its effect essentially consists in the treatment region that reaction zone is a full active substance
Territory, when Polluted Groundwater flows through, some heavy metal contaminants (lead, cadmium, arsenic, hydrargyrum,
Chromium, zinc, copper) and other organic pollutions are mixed that mud packed bed is tentatively fixing and after degraded,
Carry out microbial treatments through enhancement microbiological enrichment region again, arrange at enhancement microbiological enrichment region
There is combined stuffing, in order to be enriched with enhancement microbiological flora and to secret out of multiple compound enzyme, to pollution
Thing is degraded further, improves repairing effect on the whole.
The principle of the present invention is: heavy metal and other organic pollutions in subsoil water, by mixing
Mud packed bed is tentatively fixed and after degraded, then by enhancement microbiological and secreted being combined thereof
The dissolution of the metabolism of enzyme, oxidation-reduction and heavy metal, changes it and deposits
Form, the beneficially microorganism adsorption of heavy metal and other organic pollutions, play fixing,
Complexation, chelate, absorb, the purification such as degraded.
Compared with prior art, the main advantage of the present invention is:
1, mixing mud packed bed is set at reaction wall intracavity and pollutant is carried out primary treatment,
And the culture medium as follow-up microbial treatments.
2, enhancement microbiological enrichment region is set at reaction wall intracavity, its enhancement microbiological flora energy
Secret out of compound enzyme pollutant are degraded further, improve repairing effect on the whole.
3, due to the fact that there is safety and operability, the advantage of non-secondary pollution.
Accompanying drawing explanation
Fig. 1 is the floor map of the present invention；
Fig. 2 is the A-A profile of Fig. 1；Arrow represents water (flow) direction；
In the drawings: 1-upstream may penetrate into waterwall；2-downstream is permeable filters out waterwall；3-
Two brick-on-edge walls；4-wall chamber；4-1-reaction zone；4-2-enhancement microbiological enrichment region；5-dividing plate；
6-mixing mud packed bed；7-combined stuffing；8-probe tube；9-removable cover.
Detailed description of the invention
The present invention is described further with embodiment below in conjunction with the accompanying drawings
Embodiment 1
As shown in Figure 1 and Figure 2, the enhancement microbiological that a kind of underground water pollution of the present invention is repaired
Compound enzyme permeable reactive barrier and method, including being may penetrate into waterwall 1 by upstream, downstream can be oozed
Pass through brick wall 3 the formed wall chamber 4 leaching waterwall 2 and both sides, in described wall chamber 4
Being provided with dividing plate 5, the upper space in described wall chamber 4 is divided into reaction zone 4-1 by described dividing plate 5
With enhancement microbiological enrichment region 4-2, described reaction zone 4-1 and enhancement microbiological enrichment region 4-2
Bottom connection；Being provided with mixing mud packed bed 6 in described reaction zone 4-1, described strengthening is micro-
The combined stuffing 7 for adhering to multiple-microorganism it is provided with in biological concentration district 4-2.It addition,
It is respectively arranged with probe tube 8 in reaction zone 4-1 and enhancement microbiological enrichment region 4-2, can ooze
Transflection answers coping to be provided with removable cover 9.
It is 400mm that described upstream may penetrate into the thickness of waterwall 1, and material is boulder and cobble, grain
Footpath is 32-64mm, block pattern row pattern after packing with the gunny of 400 × 300mm.
The affiliated permeable thickness filtering out waterwall 2 in downstream is 600mm, and material is activated carbon
And active sand, its proportioning is 1:1, and particle diameter is 8-16mm, with the gunny of 400 × 600mm
Block pattern row pattern after pack.
Two described brick-on-edge walls 3 are common brick mix structure, and thickness is 400mm.
Described centre, wall chamber 4 dividing plate 5 is divided into reaction zone 4-1 and enhancement microbiological enrichment
District 4-2, the bottom of separation is connection, and the former accounts for the 1/3 of wall chamber volume, and the latter accounts for wall chamber
The 2/3 of volume.
Arranging mixing mud packed bed 6 in described reaction zone 4-1, mud packed bed 6 is by natural pond
Pool moisture percentage in sewage sludge 80%, iron filings 0.6mm, broken Pericarpium Musae 3-4mm, rice husk charcoal 1-2mm,
Wood flour 0.4-0.6mm forms, and the most broken Pericarpium Musae first dries, then pelletize.
The work process of the present invention: contaminated subsoil water → upstream may penetrate into waterwall 1 → anti-
(ZH type combines to answer district 4-1 (mixing mud packed bed 6) → enhancement microbiological enrichment region 4-2
Fiberfill) → downstream permeable go out waterwall 2 → water outlet.
The quantity controlling the microorganism species in whole wall chamber 4 is more than 1,200,000,000/gram water；Control
In whole wall chamber 4, bed mud concentration is: 10g/L-15g/L；Control microorganism in whole wall chamber 4
Content be containing 2-4 gram of microorganism in every 1000mL water；The pH controlled in wall chamber 4 is 3-6,
Dissolved oxygen DO=0mg/L.
Embodiment 2
As a example by the reparation that arsenic is polluted:
Commercial production, the exploitation of nonferrous metals ore (arsenic minerals and arsenic associated minerals) and smelting are arsenic
Primary pollution source.Arsenic may be used for metallurgy and semi-conductor industry, such as GaAs and copper arsenide, because of
This, the discharge of chemical industry, smelting, electronics industry and mine arsenic-containing waste water, waste residue is to cause underground
The important sources that water arsenic pollutes.
The present invention is to non-ferrous metals industry garden, Hunan heavy metal slag tip in application.Downstream is by arsenic
The subsoil water polluted is repaired.Arsenic pollutes can be by microbiological oxidation, reduction, it is also possible to warp
Microorganism sulfate reduction, forms precipitation after effect.Enhancement microbiological flora is implanted
Chemolithoautotrophic (change can inorganic autotrophy Pseudomonas) and
Chemoorganoheterotrophic (changes the organic heterotrophism Pseudomonas of energy).Pseudomonas has both
Detoxication, wherein changing the inorganic autotrophy Pseudomonas of energy can also be using arsenic as electron donor in growth.
When arsenic concentration of intaking is 0.5-5mg/L, mean concentration is 2.10mg/L, Jing Guoben
The content of arsenic always below detection limit value 0.010mg/L in water after invention process, its effect is obvious,
Arsenic ion concentration is less than the limit of " lead Zn Cr coating pollutant emission standard " (GB25466-2010)
Value.
Claims (7)
1. the permeable reactive barrier repaired for underground water pollution, it is characterized in that, including being may penetrate into waterwall (1) by upstream, permeable brick wall (3) institute filtering out waterwall (2) and both sides in downstream forms wall chamber (4), it is provided with dividing plate (5) in described wall chamber (4), the upper space of described wall chamber (4) is divided into reaction zone (4-1) and enhancement microbiological enrichment region (4-2) by described dividing plate (5), and described reaction zone (4-1) connects with the bottom of enhancement microbiological enrichment region (4-2)；It is provided with mixing mud packed bed (6) in described reaction zone (4-1), in described enhancement microbiological enrichment region (4-2), is provided with the combined stuffing (7) for adhering to multiple-microorganism；It is 400mm-450mm that described upstream may penetrate into the thickness of waterwall (1), and material is cobble, and particle diameter is 32-64mm；The permeable thickness filtering out waterwall (2) in described downstream is 600-650mm, and material is activated carbon and active sand, and particle diameter is 8-16mm；Described mixing mud packed bed (6) by the marsh mud of moisture content >=80%, granularity be the iron filings of 0.5-0.7mm, particle diameter be the broken Pericarpium Musae of 3-4mm, particle diameter be the rice husk charcoal of 1-2mm, particle diameter be that the wood flour of 0.4-0.6mm forms, its mass ratio is: marsh mud: iron filings: broken Pericarpium Musae: rice husk charcoal: wood flour=1:(0.8-1.2): (0.4-0.6): (0.4-0.6): (0.4-0.6).
The most according to claim 1, the permeable reactive barrier repaired for underground water pollution, is characterized in that, described two brick-on-edge walls (3) are common brick mix structure, and thickness is 400-500 mm.
The most according to claim 1, the permeable reactive barrier repaired for underground water pollution, is characterized in that, described reaction zone (4-1) accounts for the 1/3-1/2 of whole wall chamber (4) volume.
The most according to claim 1, the permeable reactive barrier repaired for underground water pollution, is characterized in that, be respectively arranged with probe tube (8) in described reaction zone (4-1) and described enhancement microbiological enrichment region (4-2).
The most according to claim 1, the permeable reactive barrier repaired for underground water pollution, is characterized in that, described permeable reactive barrier top is provided with removable cover (9).
6. the permeable reactive barrier processing method repaired for underground water pollution, it is characterized in that, treatment sewage is flow through from the described permeable reactive barrier of one of claim 1-5, flows through upstream successively and may penetrate into that waterwall (1) reaction zone (4-1), enhancement microbiological enrichment region (4-2) and downstream are permeable filters out waterwall (2)；It is attached with multiple-microorganism flora on the combined stuffing (7) of described enhancement microbiological enrichment region (4-2)；The quantity controlling the microorganism species in whole wall chamber (4) is more than 1,200,000,000/gram water；Controlling whole wall chamber (4) interior bed mud concentration is: 10g/L-15g/L；The content controlling the interior microorganism of whole wall chamber (4) is containing 2-4 gram of microorganism in every 1000mL water；The pH controlled in wall chamber (4) is 3-6, dissolved oxygen DO=0mg/L.
The permeable reactive barrier processing method repaired for underground water pollution the most according to claim 6, it is characterized in that, described microorganism species includes: Methanobacterium(methagen), Peseudomonas SP(pseudomonas), Flavobacterium SP(Flavobacterium), Aeromonas SP(aeromonas), Desulfovibrio(desulfovibrio), Candida(candida mycoderma), Penicillium(penicillium), Sulfate-Reducing Bacteria(desulfurization salt reducing bacteria), Enterobacter
Cloacae(bacillus cloacae), Ferrooxidans(ferrum Thiobacillus), Bacillus amyloli quefaciens(bacillus), Alcaligenes
Faecalis(Alcaligenes), Corynebacterium hydrocarboclastus(corynebacterium), Lactobacillus bulgaricus(Lactobacillus), Bacillus
Amyloli quefaciens(bacillus), Micrococus(Micrococcus), Enterobacter Desalfurieans(intestinal aerobacteria), Desulfovibrio
Desalfurieans(goes iodine vibrio), Chemolithoautotrophicization can inorganic autotrophy Pseudomonas) and the Chemoorganoheterotrophicization organic heterotrophism Pseudomonas of energy).
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| CN106964647A (en) * | 2017-06-06 | 2017-07-21 | 临沂大学 | A kind of method of utilization composite bacteria agent remediating lead-contaminated soil |
| CN108178441B (en) * | 2018-01-03 | 2020-06-19 | 北京师范大学 | Sponge city construction is with scrubbing material that permeates water and assembles module |
| CN108971220B (en) * | 2018-06-26 | 2021-04-06 | 绍兴文理学院 | Preparation method of pyrite microorganism combined permeable reaction wall |
| CN110697968B (en) * | 2019-10-17 | 2023-05-12 | 上海康恒环境修复有限公司 | Pulse current and permeable reactive barrier cooperative treatment method for removing pollution in soil and underground water |
| CN111069273A (en) * | 2019-12-16 | 2020-04-28 | 安徽洁然环境科技有限公司 | Application of microbial remediation ball space filling PRB (physical resource block) to assisting electric remediation of site pollution |
| CN112062280B (en) * | 2020-06-28 | 2022-05-03 | 桂林理工大学 | Combined trapezoidal ecological ditch |
| CN111924982B (en) * | 2020-08-12 | 2021-09-21 | 中国科学院武汉岩土力学研究所 | Biological permeable reactive barrier for composite contaminated site and preparation method thereof |
| CN115557601A (en) * | 2022-11-08 | 2023-01-03 | 成都理工大学 | Biomass microsphere, preparation method and application thereof, bioreactor and underground well |
| CN116639852B (en) * | 2023-07-27 | 2023-10-20 | 北京科技大学 | Permeable reactive barrier for repairing groundwater microplastic pollution and repairing method thereof |
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| US6475382B2 (en) * | 2000-12-19 | 2002-11-05 | Co2 Solution Inc. | Treatment unit for treating a fluid and method thereof |
| CN203922862U (en) * | 2014-06-23 | 2014-11-05 | 珠江水利委员会珠江水利科学研究院 | Many gallery interlocking filter wall microbial film apparatus for treating sewage |
| CN104150613B (en) * | 2014-09-01 | 2015-12-02 | 南京大学 | A kind of permeable reactive barrier packing material for groundwater azotate biological eliminating, system and fill method thereof |
| CN204661415U (en) * | 2015-05-29 | 2015-09-23 | 湖南艾布鲁环保科技有限公司 | A kind of permeable reactive barrier repaired for groundwater pollution |
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| CN103755043A (en) * | 2014-02-21 | 2014-04-30 | 辽宁工程技术大学 | Biological PRB (permeable reactive barrier) system for underground in-situ remediation of coal mine acid wastewater |
| CN104289185A (en) * | 2014-10-28 | 2015-01-21 | 北京林业大学 | Granular filtering material for adsorbing and removing heavy metals in water and preparation method thereof |
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