CN207294340U - A kind of soil remediation and the hybrid system of sewage purification - Google Patents
A kind of soil remediation and the hybrid system of sewage purification Download PDFInfo
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- CN207294340U CN207294340U CN201720832120.7U CN201720832120U CN207294340U CN 207294340 U CN207294340 U CN 207294340U CN 201720832120 U CN201720832120 U CN 201720832120U CN 207294340 U CN207294340 U CN 207294340U
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Abstract
It the utility model is related to a kind of soil remediation and the hybrid system of sewage purification, including the multi-stage stepwise artificial wetland for relying on hillside and building, every grade of artificial swamp is included by the soil horizon of heavy metal pollution, hypothallus, plant and impervious barrier, appropriate zeolite and vermiculite are added in by the soil horizon of heavy metal pollution, and is put into some earthworms；And screen and lay suitable plant and matrix type, sewage passes through artificial wet land system step by step.The purpose of soil remediation can be realized at the same time by finally realizing efficient water purification, beautification of landscape, the decontamination of the system energy stable for extended periods of time and soil remediation effect, be conducive to abundant species diversity, beautify landscape, provided for the public and view and admire have a rest place and Popular Science Education base.
Description
Technical field
The utility model is related to sewage purification and technical field of soil remediation, more particularly to a kind of soil remediation and sewage it is net
The hybrid system of change.
Background technology
2007, the rural area in China 96% did not had sewage disposal system, and 3.2 hundred million peasants cannot drink clean water.Cause agriculture
Water pollution serious one of the main reasons in village's is the random discharge of domestic sewage in rural areas.Sewage Pollution is mainly manifested in two
A aspect：(1) sanitary sewage easily rots, grows mosquitos and flies, infects disease, look of a village village looks is seriously affected, to rural area
Hygiene and health bring very big hidden danger.(2) sanitary sewage most penetrates into underground by ground and earth's surface at last, causes groundwater quality dirty
Dye, endangers the safety belt of domestic drinking water in rural areas.The Ministry of Construction, State Bueau of Environmental Protection and the Department of Science and Technology propose complete by 2010
The wastewater treatment rate of state city and organic town is not less than 50% target.Chinese society doctrine new countryside construction is also required to rural area
Sanitary sewage is effectively treated, and then improves look of a village village looks, is ensured rural groundwater source safety, is improved agricultural product quality, protects
Protect Ecological Environment.
Soil is the material base that the mankind depend on for existence and development, is the basic means of production of agricultural production.But with city
City, industrialization deepen continuously, and exploitation of mineral resources, metal smelt, sewage irrigation, a large amount of of chemical fertilizer such as use at the mankind's activity,
So that the pollutant containing various heavy enters soil by all means, heavy metal pollution of soil is caused, so as to cause soil
Earth is degenerated, ecological disruption, and enters organism by geochemistry chain, food chain to jeopardize human health and life security.
If heavy metal pollution of soil owner mercury, lead, copper, zinc, chromium, nickel, tin and metallic arsenic etc..How the soil of getting worse is mitigated
Heavy metal pollution, and then it is extremely urgent to repair the problem of reduction utilizes, it would be highly desirable to study.At present, to heavy-metal contaminated soil
Governance way mainly has 2 kinds by its mechanism：（1）Change the existing forms of heavy metal in the soil, it is fixed so as to reduce it
Migration in the environment and bioavailability；（2）Removing heavy metals are removed from soil, are close to or up to so that it retains concentration
Background value.Carried out the research of more remediation of heavy metal-contaminated soil both at home and abroad, mainly with visitor turn over soil removal and replacement, passivation, elution,
Physical chemistry recovery technique based on the methods of electrochemical rehabilitation, fixed chemistry and the life based on plant, microorganism and animal
Thing recovery technique, it may be said that be to cut both ways, but at present still lack economical and efficient and environmental-friendly technology by heavy metal from
Removed in contaminated soil.
Artificial wet land treating system is a kind of sewage disposal technology to grow up the 1970s, because with processing effect
Fruit is good, builds the advantages that management low with operating cost, easy to maintain and is subject to the most attention of countries in the world, becomes and sends out in recent years
A kind of faster New Technology about Wastewater Treatment of exhibition.Eutrophication water, landfill leachate, livestock and poultry cultivation is now widely used for give up
Water, food wastewater etc. are administered.Artificial swamp is to plant wetland plant in certain matrix (filler), to organic matter and nitrogen, phosphorus
Pollutant has stronger degradation capability.Artificial swamp is the thing using this complex ecosystem of matrix-microorganism-plant
Triple coordinative roles of reason, chemistry and biology, by filtering, precipitating, ion exchange, plant absorption and microorganism decomposition carry out reality
Now to the high-efficient purification of waste water.Early in early 20th century, Britain and the U.S., which just have, utilizes cattail (Typha angustifolia) natural pond
The precedent of damp treated sewage.
Current most of researchs in relation to wetland plant are carried out around draft, cattail (Typha sp.), reed
(Phragmites sp.), Scirpus tabernaemontani (Scirpus sp.), canna (Canna sp.), Eichhornia crassipes (Eichhorina
Crassipes), sedge (Carex sp.), rush (Juncus sp.), iris (Iris sp.) etc. worldwide by
Extensive introducing and planting.In China, calamus (Acorus calamus), scirpus triqueter (Scirpus sp.), reed canary grass (Phalaris
Sp.), cyperus malaccensis (Cyperus malaccensis), duckweed (Lemna minor), wild rice stem (Zezania latifalia) etc.
It is widely studied and applies.Moreover, the compound muskeg that different wetland floristics mixed plantings are formed is generally than purebred plant
By more advantage, the compound muskeg of multiple types has the wastewater purification efficiency of higher than purebred vegetation, and parasite is preyed on
Or eruptive epidemic disease also has more stable resistance.To reed wetland single and mixed planting purification number in the world
Find according to statistics, mixed planting system not only purification efficiency higher, but also effect is more stable.
In addition, filler is the important component of artificial swamp, growing environment is provided for wetland plant, microorganism, its
The processes such as artificial swamp filtering, absorption, microbial degradation itself are also assisted in.So the packing screening of high-efficiency and economic and matching somebody with somebody
Put, directly determine the denitrogenation dephosphorizing efficiency of artificial swamp, so as to influence repairing effect of the system to polluted-water, thus have
Highly important meaning.Traditional artificial wet land filler is more based on soil, quartz sand, gravel etc., but since these materials adsorb
Poor-performing, artificial swamp is after a period of time is run, and absorption of the filler to nitrogen phosphorus progressivelyes reach saturation, under its removal rate starts
Drop.At present, traditional artificial wet land filler is substituted using the high-efficiency artificial such as haydite, modified zeolite, activated carbon adsorption stuffing, achieved
Preferable treatment effect, but since the cost of these fillers is higher, it is difficult to carried out in Practical Project large area popularization and
Using.Wastewater treatment efficiency and matrix fill type of relationship are close, targetedly the single filler of Reasonable Arrangement and compounded mix,
The pollutants removal rate in artificial swamp can be effectively improved.
And the chemical remediation technology of soil is mainly based upon a kind of ameliorative measure of pollutant behavior of soil chemistry, such as add
The chemical substances such as modifying agent, inhibitor reduce the water solubility of heavy metal in soil, diffusivity and biological effectiveness, so that weight
Metal is converted into hypotoxicity or the relatively low chemical form of mobility, to mitigate harm of the heavy metal to ecology and environment.Chemistry is repaiied
Multiple mechanism mainly includes precipitation, absorption, redox, hydrolysis and pH adjustings etc..Chemical remediation technology mainly changes including soil
Good technology, Soil leaching technology, electric repairing technique etc..Soil animal recovery technique refers to micro- using soil animal and its enteron aisle
Biology carries out pollutant in the active procedure such as growth, breeding, interspersed in contaminated soil under manual control or natural conditions
The effect decomposed, digest and be enriched with, so that a kind of bioremediation technology that pollutant is reduced or eliminated.The phytoremediation of soil
Technology refers to utilize the heavy metal in plant absorption, decomposition, volatilization or fixing soil, reduce heavy metal content in the soil and
Bio-available Zn concentration, so as to reduce its harm to biology.Its essence is by certain specific planting in heavy metal pollution
On soil, and this kind of plant have to the pollution element in soil it is special restrain oneself and excessive accumulaiton ability, by plant harvest simultaneously
Dealt carefully with（Such as it is ashed recycling）After heavy-metal movement can be gone out the soil body, with achieve the purpose that pollution administration with recover ecology.
Heavy metal pollution of soil has the characteristics that complexity, irreversibility and the poly- property of table, single administering method are difficult by it
Whole heavy metals removals are clean, and 2 kinds or two or more recovery technique are combined, and can preferably be played the advantages of respective, are more advantageous to
The reparation of heavy metal pollution of soil.Combined remediation technology is the hot spot of Recent study, combined remediation technology chelating agent-plant
Repair, the content that chelating agent improves heavy metal in the soil liquid is applied into soil, so as to strengthen hyperaccumulative plant to heavy metal
Absorption；Voltage-phytoremediation, under voltage effect, nearby electrochemical reaction occurs electrode for the soil liquid, changes soil
Physicochemical property, accelerates the desorption of heavy metal on soil solid, improves the content of heavy metal in the soil liquid, is conducive to ultraproduct and tires out plant
Absorption, the accumulation of thing.Suitable super enriching plant is planted on this basis, can more effectively rehabilitating soil.
Though although there are many researchs to soil remediation and sewage disposal both at home and abroad at present, also there are some above-mentioned processing sides
Method, still, no matter which kind of method treatment effect is not ideal at present, or effluent quality does not reach emission request, or into
Ben Taigao and can not be promoted and applied in China.Domestic sewage in rural areas is all very high waste water of a kind of organic matter and concentration of nitrogen and phosphorus, single
Only anaerobism or aerobic process are all unsuitable, and the water outlet of independent anaerobic technique does not reach emission request, single aerobic work
Skill cannot bear such high concentration, the waste water of high load capacity, a series of problems, such as sludge bulking necessarily occur, and operating cost compared with
It is high.At the same time, it is necessary to be intended that it has not been found that Wastewater Treatment by Constructed Wetlands composite soil recovery technique, its sieve based on plant
Choosing and the Reasonable Arrangement of matrix, coordinate collaboration treated sewage and soil, and obtain good practical value.
Utility model content
For the defects of above-mentioned field, the purpose of this utility model is to provide for a kind of soil remediation, while can be real
Now efficient water purification, the hybrid system for beautifying landscape, the decontamination of the system energy stable for extended periods of time and soil remediation effect, are conducive to
Abundant species diversity, beautifies landscape, is provided for the public and view and admire have a rest place and Popular Science Education base.
To achieve these goals, the technical solution of the utility model is：Hybrid system is mainly built by relying on hillside
Multi-stage stepwise artificial wetland forms, wherein, every grade of artificial swamp includes the soil horizon, hypothallus, plant by heavy metal pollution
And impervious barrier, appropriate zeolite and vermiculite are added in the soil horizon by heavy metal pollution, and are put into some earthworms；Sewage leads to
The drainpipe for crossing upper level artificial swamp bottom is drained into other artificial swamps at different levels；
Sewage pretreatment tank person who lives in exile vertical with primary vertical artificial wetland, two grades of horizontal artificial wetland, three-level successively
Work wetland is connected with level Four horizontal flow artificial wetland；
The primary vertical artificial wetland is laid with the soil by heavy metal pollution, microlith coarse sands layer, thin from top to bottom
The gravel of layer of sand and different-grain diameter, fills water distributor in the gravel layer of the primary vertical artificial wetland, is buried in soil horizon
Equipped with collector pipe, the soil horizon surface grafting ciliate desert-grass and ramie；
The two grades of horizontal artificial wetland is laid with soil, zeolite and gravel by heavy metal pollution from top to bottom,
Soil horizon surface grafting cordate houttuynia, reed and the Chinese littleleaf box, and nitrate bacteria and nitrite bacteria are launched in zeolite and gravel；
The three-level vertical current constructed wetland is laid with soil and matrix by heavy metal pollution from top to bottom, the matrix bag
Lime stone and cinder rich in calcium are included, in soil horizon surface grafting calamus, black nightshade and castor-oil plant；
The level Four horizontal flow artificial wetland is laid with from top to bottom to be filled out by the soil, vermiculite and combination of heavy metal pollution
Material, in soil horizon surface grafting sainfoin, Sedum alfredii Hance and the water pepper.
Further, the grain size of gravel in primary vertical artificial wetland is respectively 20-30mm and 10-20mm.
The utility model compared with prior art, has the advantages that：
（1）The utility model solves organic in sewage by the way that soil remediation and sewage disposal technology are combined
The removal problem of thing, N and P, also achieves the soil remediation problem by heavy metal pollution, the two brings out the best in each other.
（2）By adding the Typical matrices of artificial swamp into contaminated soil horizon, such as zeolite and vermiculite, so as to change
The existing forms of heavy metal in soil, to adsorb heavy metal, to reduce its mobility and toxicity, so as to suppress to flowing into sewage
Harm；In addition, by adding earthworm, it has eat organic substance and enrichment, the ability for decomposing and digesting heavy metal, improves
Soil permeability（It is permeable, ventilative）, act synergistically with microorganism and promote the biological function such as degraded of organic substance.
（3）Wetland plant selection has specific aim, as ciliate desert-grass has an ability for being enriched with arsenic and mercury, black nightshade energy cadmium,
Ramie can improve the mercury clean-up effect in soil, and water pepper can adsorb manganese ion in soil etc., in addition, these plants can be to dirt
Water carries out direct purification effect and indirect catharsis.
（4）According to the pollutant kind in sewage, different matrix fills is reasonably selected and laid, coordinates microorganism and plant
The comprehensive function of thing, the total phosphorus of final outflow water（Phosphate）It is better than with ammonia nitrogen concentration《Water environment quality standard》（GB3838-
2002）IV class water standard, COD removal rates reach more than 95%.
（5）The sewage of whole artificial wet land system is conveyed by gravity, has saved the energy consumption of whole processing system.
Brief description of the drawings
Fig. 1 is the connection diagram of Tthe utility model system.
Identified in figure：1- hillside；2- sewage pretreatment tanks；3- primary vertical artificial wetlands；4- two grades of horizontal turning flow artificials
Wetland；5- three-level vertical current constructed wetlands；6- level Four horizontal flow artificial wetlands；7- drainpipes；8- outlet pipes.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment
Technical solutions of the utility model are described in detail below by attached drawing, but the scope of protection of the utility model
It is not limited to the embodiment.
Specific embodiment of the present utility model：A kind of soil remediation and the hybrid system of sewage purification are mainly by relying on mountain
Slope 1 and the multi-stage stepwise artificial wetland composition built, wherein, every grade of artificial swamp includes soil horizon, the base by heavy metal pollution
Matter layer, plant and impervious barrier, add appropriate zeolite and vermiculite in the soil horizon by heavy metal pollution, and are put into some earthworms
Earthworm；Sewage is drained into other artificial swamps at different levels by the drainpipe 7 of upper level artificial swamp bottom；Sewage pretreatment tank 2 according to
Secondary and primary vertical artificial wetland 3, two grades of horizontal artificial wetland 4, three-level vertical current constructed wetland 5 and the horizontal person who lives in exile of level Four
Work wetland 6 is connected；The primary vertical artificial wetland is laid with the soil by heavy metal pollution, microlith coarse sand from top to bottom
The gravel of layer, fine sand layer and different-grain diameter, fills water distributor in the gravel layer of the primary vertical artificial wetland, in soil horizon
In be embedded with collector pipe, the soil horizon surface grafting ciliate desert-grass and ramie；The two grades of horizontal artificial wetland is from top to bottom
The soil, zeolite and gravel by heavy metal pollution are laid with, in soil horizon surface grafting cordate houttuynia, reed and the Chinese littleleaf box, and is being boiled
Nitrate bacteria and nitrite bacteria are launched in stone and gravel；The three-level vertical current constructed wetland is laid with by a huge sum of money from top to bottom
Belong to contaminated soil and matrix, which includes lime stone and cinder rich in calcium, soil horizon surface grafting calamus, black nightshade and
Castor-oil plant；The level Four horizontal flow artificial wetland be laid with from top to bottom by the soil of heavy metal pollution, vermiculite and and combined stuffing,
In soil horizon surface grafting sainfoin, Sedum alfredii Hance and the water pepper.
Preferably, the grain size of gravel in primary vertical artificial wetland is respectively 20-30mm and 10-20mm.
Preferably, in order to preferably remove phosphorus in water removal, the combined stuffing designed in level Four horizontal flow artificial wetland has suction
The effect of attached phosphorus, is made of the clinker of 40-60% weight ratios, the red soil of 10-30% weight ratios and 10-20% weight ratios sea oyster shell.
Idiographic flow using the utility model hybrid system is as follows：
Comprise the following steps that：（1）Country sewage is discharged into pretreating sewage pond, carries out preliminary oil removal, removal of impurities and even
Matterization processing；（2）Pretreated sewage self-flowing enters in primary vertical artificial wetland, and the primary vertical artificial wetland is certainly
The upper and lower gravel being laid with by the soil of heavy metal pollution, microlith coarse sands layer, fine sand layer and particle diameter for 20-30mm and 10-20mm,
Water distributor is filled in the gravel layer of the primary vertical artificial wetland, collector pipe is embedded with soil horizon, the soil horizon table
Plant ciliate desert-grass and ramie in face；（3）Two level is flowed into by gravity certainly through primary vertical artificial wetland purified sewage
Horizontal flow artificial wetland is handled, and the two grades of horizontal artificial wetland is laid with the soil by heavy metal pollution from top to bottom
Earth, zeolite and gravel, in soil horizon surface grafting cordate houttuynia, reed and the Chinese littleleaf box, and dispensing nitric acid is thin in zeolite and gravel
Bacterium and nitrite bacteria；（4）It is vertical from three-level is flowed into by gravity through the purified sewage of two grades of horizontal artificial wetland
Artificial wetland is handled, and three-level vertical current constructed wetland is laid with soil and matrix by heavy metal pollution from top to bottom, should
Matrix includes lime stone and cinder rich in calcium, in soil horizon surface grafting calamus, black nightshade and castor-oil plant；（5）Through three-level vertical current
Sewage after Constructed Wetland For Purifying is handled by gravity from level Four horizontal flow artificial wetland is flowed into, the horizontal person who lives in exile of level Four
Work wetland is laid with soil, vermiculite and combined stuffing by heavy metal pollution from top to bottom, the soil horizon surface grafting sainfoin,
Sedum alfredii Hance and water pepper.Wherein, the combined stuffing in level Four horizontal flow artificial wetland has the function that Phosphate Sorption, by 40-60% weights
Measure the clinker of ratio, the red soil of 10-30% weight ratios and 10-20% weight ratios sea oyster shell composition.In addition, the soil by heavy metal pollution
Appropriate zeolite and vermiculite are added in layer to carry out mineral reparation to soil, and is put into some earthworms further to utilize animal
To digest, decompose and enriching heavy metal and organic matter etc..
After artificial wetland treatment, soil by chemical remediation, it is biological prosthetic after, plant, earthworm and microorganism pair
Heavy metal in soil is absorbed and is enriched with, and is then concentrated and is gathered in these plants, effective reduction is can reach by continuously planting
Or the heavy metal in removal soil, efficiently carry out soil remediation work；Total phosphorus in water outlet（Phosphate）And ammonia nitrogen concentration
It is better than《Water environment quality standard》（GB3838-2002）IV class water standard, COD removal rates reach more than 95%.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
The equivalent structure or equivalent flow shift made using the utility model specification, it is relevant to be directly or indirectly used in other
Technical field, is equally included in the patent within the scope of the utility model.
Claims (2)
1. a kind of soil remediation and the hybrid system of sewage purification, it is characterised in that the mainly multistage rank by relying on hillside and building
Ladder type artificial swamp forms, wherein, every grade of artificial swamp is included by the soil horizon of heavy metal pollution, hypothallus, plant and antiseepage
Layer, appropriate zeolite and vermiculite are added in the soil horizon by heavy metal pollution, and be put into some earthworms；Sewage passes through upper one
The drainpipe of level artificial swamp bottom is drained into other artificial swamps at different levels；
Sewage pretreatment tank is wet with primary vertical artificial wetland, two grades of horizontal artificial wetland, three-level perpendicular flow artificial successively
Ground is connected with level Four horizontal flow artificial wetland；
The primary vertical artificial wetland is laid with the soil by heavy metal pollution, microlith coarse sands layer, fine sand layer from top to bottom
With the gravel of different-grain diameter, water distributor is filled in the gravel layer of the primary vertical artificial wetland, is embedded with soil horizon
Collector pipe, the soil horizon surface grafting ciliate desert-grass and ramie；
The two grades of horizontal artificial wetland is laid with soil, zeolite and gravel by heavy metal pollution from top to bottom, in the soil
Earth layer surface plantation cordate houttuynia, reed and Chinese littleleaf box, and nitrate bacteria and nitrite bacteria are launched in zeolite and gravel；
The three-level vertical current constructed wetland is laid with soil and matrix by heavy metal pollution from top to bottom, which includes richness
The lime stone and cinder of calcic, in soil horizon surface grafting calamus, black nightshade and castor-oil plant；
The level Four horizontal flow artificial wetland is laid with soil, vermiculite and combined stuffing by heavy metal pollution from top to bottom,
Soil horizon surface grafting sainfoin, Sedum alfredii Hance and the water pepper.
2. a kind of soil remediation according to claim 1 and the hybrid system of sewage purification, it is characterised in that the level-one
Grain size of gravel in vertical current constructed wetland is respectively 20-30mm and 10-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720832120.7U CN207294340U (en) | 2017-07-11 | 2017-07-11 | A kind of soil remediation and the hybrid system of sewage purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720832120.7U CN207294340U (en) | 2017-07-11 | 2017-07-11 | A kind of soil remediation and the hybrid system of sewage purification |
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| Publication Number | Publication Date |
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| CN207294340U true CN207294340U (en) | 2018-05-01 |
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ID=62450563
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| CN201720832120.7U Expired - Fee Related CN207294340U (en) | 2017-07-11 | 2017-07-11 | A kind of soil remediation and the hybrid system of sewage purification |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110434164A (en) * | 2019-07-08 | 2019-11-12 | 迪天环境技术南京股份有限公司 | One heavy metal species reparation great Ye dandelion high yield method for planting |
| CN110449451A (en) * | 2019-01-18 | 2019-11-15 | 湖南高岭环保科技有限公司 | A kind of prosthetic device and restorative procedure of mine soil arsenic pollution |
| CN110563268A (en) * | 2019-09-16 | 2019-12-13 | 上海应用技术大学 | Rural sewage treatment system |
| CN115846397A (en) * | 2022-12-30 | 2023-03-28 | 中铁环境科技工程有限公司 | Mine soil remediation method |
-
2017
- 2017-07-11 CN CN201720832120.7U patent/CN207294340U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449451A (en) * | 2019-01-18 | 2019-11-15 | 湖南高岭环保科技有限公司 | A kind of prosthetic device and restorative procedure of mine soil arsenic pollution |
| CN110434164A (en) * | 2019-07-08 | 2019-11-12 | 迪天环境技术南京股份有限公司 | One heavy metal species reparation great Ye dandelion high yield method for planting |
| CN110563268A (en) * | 2019-09-16 | 2019-12-13 | 上海应用技术大学 | Rural sewage treatment system |
| CN115846397A (en) * | 2022-12-30 | 2023-03-28 | 中铁环境科技工程有限公司 | Mine soil remediation method |
| CN115846397B (en) * | 2022-12-30 | 2023-09-08 | 中铁环境科技工程有限公司 | Mine soil restoration method |
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