CN202988917U - Vertical flow artificial wetland substrate reversed size grading system - Google Patents

Vertical flow artificial wetland substrate reversed size grading system Download PDF

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Publication number
CN202988917U
CN202988917U CN2012206066884U CN201220606688U CN202988917U CN 202988917 U CN202988917 U CN 202988917U CN 2012206066884 U CN2012206066884 U CN 2012206066884U CN 201220606688 U CN201220606688 U CN 201220606688U CN 202988917 U CN202988917 U CN 202988917U
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matrix
substrate
size grading
hypothallus
vertical
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CN2012206066884U
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张翔凌
姜应和
金建华
程静
李翠华
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The utility model provides a vertical flow artificial wetland substrate reversed size grading system which is used in the technical field of water pollution control engineering ecology. The vertical flow artificial wetland substrate reversed size grading system comprises a punched hole water inlet pipe above vegetation soil and a punched hole water outlet pipe below the vegetation soil, wherein a plurality of layers of layered structures are arranged between the bottom of the vegetation soil and the punched hole water outlet pipe. The layered structures comprise a blast furnace steel slag substrate layer, a zeolite substrate layer and a biological ceramsite substrate layer which are arranged in sequence from top to bottom, wherein substrate sizes of all the layers are decreased in sequence from top to bottom, a support water discharge layer is further arranged below the biological ceramsite substrate layer, and the punched hole water outlet pipe is arranged inside the support water discharge layer. The vertical flow artificial wetland substrate reversed size grading system is simple in structure, low in cost, strong in comprehensive purifying capacity, high in quality of processed water, and beneficial for improvement of wetland comprehensive treatment capacity.

Description

The anti-size grading of a kind of substrate of vertical-flow constructed wetlands system
Technical field
The utility model belongs to Water Pollution Control Engineering ecotechnology field, is specifically related to the anti-size grading of a kind of substrate of vertical-flow constructed wetlands system.
Background technology
At present, artificial wet land system is the low input, less energy-consumption of a suitable China's national situation, the ecological wastewater processing technology of low overhead charges, has wide application prospect.The recovery that the artificial swamp that utilizes various configurations carries out the original position ecosystem to polluted water body and soil be in recent years China at the study hotspot in water pollution control and ecological reestablishment field.In the artificial swamp of various configurations, the streams of vertical current constructed wetland combines the characteristics of surface stream wetland and current wetland, can take full advantage of stromal surface, improves processing efficiency; Its vertical vertical flow-shape saves floor occupying area.The inner typical aerobic zone of vertical current constructed wetland, oxygen-starved area and anaerobic zone make it to have possessed higher nitrated, denitrifying capacity and dephosphorization ability, can be used for the reparation of organism, polluted lake water body that nitrogen and phosphorus content is higher and the Ecological Disposal of city domestic sewage.
Although the ultimate principle of vertical current constructed wetland and purification mechanism thereof are familiar with by people gradually, the matrix research of one of wetland purification main body still is in the starting stage.Matrix is in artificial swamp, sewage to be transformed into the place that clear water and waterplant and microorganism depend on for existence, is also the hinge that organic pollutant transfers inorganic non-toxic substance to, is directly connected to artificial swamp to the purification efficiency of organism, nitrogen, phosphorus., also can pass through the effects such as precipitation, filtration and absorption and directly remove pollutent, so the factors such as the kind of matrix, grating will directly affect the effect that precipitation, filtration and absorption etc. act on when providing growth medium for plant and microorganism due to matrix; In addition, due to the difference of matrix components, different substrates is to dissimilar pollutent, also differs greatly as the removal effect of organism, nitrogen, phosphorus etc.; The simple combination of single-matrix or several matrix often only has a certain pollutent index in the pollutents such as organism, nitrogen, phosphorus removes efficient preferably, is difficult to reach the target of utilizing vertical current constructed wetland comprehensive purifying water body principal pollutant.
Summary of the invention
Technical problem to be solved in the utility model is the deficiency for above-mentioned existence, provide a kind of simple in structure, with low cost, comprehensive purifying ability strong, process after water quality good, be conducive to improve the anti-size grading of the substrate of vertical-flow constructed wetlands system of wetland comprehensive treatment capability.
The technical scheme that its technical problem that solves the utility model adopts is:
The anti-size grading of a kind of substrate of vertical-flow constructed wetlands system; include the perforation water inlet pipe of vegetation soil top and the perforated drain pipe of below; it is characterized in that: below vegetation soil and between perforated drain pipe; be provided with the multilayer layered structure; be followed successively by from top to bottom blast furnace slag hypothallus, zeolite matrix layer and biological ceramic particle hypothallus; wherein each layer matrix particle diameter from top to bottom reduces to arrange successively; described biological ceramic particle hypothallus below also is provided with the support layer of displacement, and it is inner that perforated drain pipe is placed in the support layer of displacement.
In such scheme, described vegetation soil thickness is 50-100mm, also plants in vegetation soil and is implanted with plant, and plant is vascular plant.
In such scheme, described blast furnace slag hypothallus, its blast furnace slag matrix particle diameter is 25-40mm; Thickness is 150-250mm.
In such scheme, described zeolite matrix layer, its zeolite matrix particle diameter is 15-25mm; Thickness is 350-500mm.
In such scheme, described biological ceramic particle hypothallus, its biological ceramic particle matrix particle diameter is 8-15mm; Thickness is 350-500mm.
In such scheme, described support layer of displacement, its matrix is irregular gravel, its particle diameter is 15-25mm.
In such scheme, described blast furnace slag matrix, zeolite matrix, biological ceramic particle matrix volume ratio is 1:2:2.
The beneficial effects of the utility model are:
1, the utility model is simple in structure, and is stable.Hypothallus adopts three level formula formulas, load respectively the matrix of large, medium and small three kinds of particle diameters from top to bottom, most of suspension and colloidality material in the large particle diameter matrix energy effectively catching water inlet of upper strata, it is minimum that lower floor's small particle size matrix can guarantee that the water outlet concentration of suspension drops to, and in the middle level, particle diameter matrix has guaranteed that there are enough better purifying spaces in the matrix district.
2, the utlity model has the strong advantage of comprehensive purifying ability.Upper strata large particle diameter blast furnace slag matrix has stronger phosphate chemical adsorptive power, can effectively reduce the total phosphorous in water body; Particle diameter zeolite matrix in the middle level has good denitrification effect, can effectively remove the total nitrogen in water body and ammonia nitrogen; Lower floor's small particle size biological ceramic particle matrix has excellent surface property, is conducive to adhering to and enrichment of microorganism, the organic pollutant on it in microbial film of growth energy efficient degradation water body.
3, the collaborative ecological purification system that jointly is comprised of plant-matrix-microorganism can well be carried out physics interception, chemisorption and biological degradation to the pollutents such as contained insoluble suspended substance, dissolved organic matter, nitrogen phosphorus in polluted water body, the water quality of water outlet after having guaranteed to process.
4, selected substrate material is simple and easy to, and is with low cost, and running cost is lower; Wherein blast furnace slag is the waste of steel industry, its utilization can be reached the effect of the treatment of wastes with processes of wastes against one another; Simultaneously, institute's kind of plant is suitably screened, also can turn place's ecology garden landscape into.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
In figure: 1. the water inlet pipe of boring a hole; 2. vegetation is native; 3. blast furnace slag hypothallus; 4. zeolite matrix layer; 5. biological ceramic particle hypothallus;
6. support layer of displacement; 7. perforated drain pipe.
Embodiment
Below in conjunction with embodiment, the utility model is further described:
The anti-size grading of substrate of vertical-flow constructed wetlands as shown in Figure 1 system; include the perforation water inlet pipe 1 of vegetation soil 2 tops and the perforated drain pipe 7 of below; below vegetation soil and between perforated drain pipe; be provided with the multilayer layered structure; be followed successively by from top to bottom blast furnace slag hypothallus, zeolite matrix layer and biological ceramic particle hypothallus; wherein each layer matrix particle diameter from top to bottom reduces to arrange successively; described biological ceramic particle hypothallus below also is provided with support layer of displacement 6, and perforated drain pipe 7 is placed in support layer of displacement 6 inside.
In the present embodiment, described vegetation soil thickness is 80mm, also plants in vegetation soil and is implanted with plant, and plant is vascular plant.
In the present embodiment, described blast furnace slag hypothallus, its matrix particle diameter is 30mm; Thickness is 200mm, described zeolite matrix layer, and its matrix particle diameter is 20mm; Thickness is 400mm, described biological ceramic particle hypothallus, and its matrix particle diameter is 10mm; Thickness is 400mm, described support layer of displacement, and its matrix is irregular gravel, its particle diameter is 20mm.
In the present embodiment, described blast furnace slag matrix, zeolite matrix, biological ceramic particle matrix volume ratio is 1:2:2.
Take the water body in lake that typically is subjected to nitrogen phosphorus and Organic pollutants as example, during use, lake water is promoted to native system by water pump system; At first enter the perforation water inlet pipe 1, and by the perforation water inlet pipe 1 to the wet land system water distribution uniformity; Enter into the blast furnace slag hypothallus 3 of large particle diameter after the first filtration of lake water with perpendicular stream fluidised form process vegetation soil 2; In blast furnace slag hypothallus 3, dissolved phosphorus compound contained in lake water is degraded under the chemisorption of blast furnace slag matrix 3; Thereafter lake water enters zeolite matrix layer 4, and the zeolite matrix layer 4 of middle particle diameter has stronger total nitrogen and ammonia nitrogen degradation ability, and the nitrogen compound in lake water is degraded in zeolite matrix layer 4; Then lake water enters the biological ceramic particle hypothallus 5 of small particle size, and because biological ceramic particle hypothallus 5 surfaces are easy to the microbial film of growing, microorganism has biological degradation function to dissolved organic matter entrained in lake water; Simultaneously, because biological ceramic particle hypothallus 5 particle diameters are less, in lake water, residual fine suspension also can be held back by physics and be removed.At last, lake water is collected through support layer of displacement 6 inner set perforated drain pipes 7 and is got rid of system.In addition, plant also can absorb the nutritional substance (as nitrogen, phosphorus) that carries in lake water when providing oxygen by photosynthesis for microorganism.
Principle of the present utility model, at first former water is by perforation water inlet pipe 1 water distribution uniformity, and the vascular plant of vegetation soil 2 and plantation has certain interception function to the suspension pollutent in former water.After former water entered into hypothallus, at first process was the blast furnace slag hypothallus 3 of large particle diameter; Because 3 pairs of P contained compounds of blast furnace slag hypothallus have stronger chemical adsorptivity, the phosphorus in former water is removed at blast furnace slag hypothallus 3; In addition, the blast furnace slag of large particle diameter provides larger matrix voidage, is conducive to the oxygen supply of lower floor's zeolite matrix layer 4 and biological ceramic particle hypothallus 5 and the physics of suspended substance is tackled.Secondly, former water is entered into the zeolite matrix layer 4 of particle diameter by 3 water outlets of blast furnace slag hypothallus, utilize the nitrogen compound degradation capability of zeolite matrix, reaches the purpose of denitrogenation.The former water that has passed through dephosphorization and denitrogenation enters into the biological ceramic particle hypothallus 5 of small particle size at last, in the growth of biological ceramic particle stromal surface, microbial film is arranged, and is conducive to microorganism to the biological degradation of dissolved organic matter in former water; Simultaneously, microorganism can be by residual nitrogen phosphorus compound in the former water of the further degraded of effect of nitrifier and polyP bacteria; In addition, the small particle size of biological ceramic particle has guaranteed that also the suspended substance in the final outflow water drops to minimum.
Above explanation is only Application Example of the present utility model, certainly can not limit with this interest field of the utility model, and the equivalence of therefore doing according to the utility model claim changes, and still belongs to protection domain of the present utility model.

Claims (7)

1. the anti-size grading of substrate of vertical-flow constructed wetlands system, include the perforation water inlet pipe (1) of vegetation soil (2) top and the perforated drain pipe (7) of below, it is characterized in that: be provided with the multilayer layered structure between vegetation soil (2) below and perforated drain pipe (7), be followed successively by from top to bottom blast furnace slag hypothallus (3), zeolite matrix layer (4) and biological ceramic particle hypothallus (5), wherein each layer matrix particle diameter from top to bottom reduces to arrange successively, described biological ceramic particle hypothallus (5) below also is provided with support layer of displacement (6), perforated drain pipe (7) is placed in support layer of displacement (6) inside.
2. the anti-size grading of substrate of vertical-flow constructed wetlands as claimed in claim 1 system, it is characterized in that: described vegetation soil (2) thickness is 50-100mm, also plants in vegetation soil (2) and is implanted with plant, and plant is vascular plant.
3. the anti-size grading of substrate of vertical-flow constructed wetlands as claimed in claim 1 system is characterized in that: described blast furnace slag hypothallus (3), and its blast furnace slag matrix particle diameter is 25-40mm; Thickness is 150-250mm.
4. the anti-size grading of substrate of vertical-flow constructed wetlands as claimed in claim 1 system is characterized in that: described zeolite matrix layer (4), and its zeolite matrix particle diameter is 15-25mm; Thickness is 350-500mm.
5. the anti-size grading of substrate of vertical-flow constructed wetlands as claimed in claim 1 system is characterized in that: described biological ceramic particle hypothallus (5), and its biological ceramic particle matrix particle diameter is 8-15mm; Thickness is 350-500mm.
6. the anti-size grading of substrate of vertical-flow constructed wetlands as claimed in claim 1 system, it is characterized in that: described support layer of displacement (6), its matrix are irregular gravel, its particle diameter is 15-25mm.
7. the anti-size grading of substrate of vertical-flow constructed wetlands as described in claim 3-5 system is characterized in that: described blast furnace slag matrix, and zeolite matrix, biological ceramic particle matrix volume ratio is 1:2:2.
CN2012206066884U 2012-11-16 2012-11-16 Vertical flow artificial wetland substrate reversed size grading system Active CN202988917U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103482761A (en) * 2013-06-28 2014-01-01 张列宇 Operation method of deep underground soil infiltration system sewage treatment unit
CN103938518A (en) * 2014-04-16 2014-07-23 同济大学 Method for constructing road runoff pollution control greening system
CN104110059A (en) * 2014-07-09 2014-10-22 同济大学 Ecological filter groove construction method for cutting urban runoff pollution
CN104402169A (en) * 2014-10-24 2015-03-11 江苏省交通科学研究院股份有限公司 Pretreatment reinforced anti-clogging constructed wetland for landscape water and river improvement
CN104628138A (en) * 2015-01-21 2015-05-20 北京林业大学 Artificial wetland filler capable of efficiently removing nitrogen and phosphorous and preparation method thereof
CN105776763A (en) * 2016-04-27 2016-07-20 中国科学院水生生物研究所 Novel composite substrate for vertical flow artificial wetlands
CN107162202A (en) * 2017-06-29 2017-09-15 西施生态科技股份有限公司 A kind of substrate of vertical-flow constructed wetlands structural system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103482761A (en) * 2013-06-28 2014-01-01 张列宇 Operation method of deep underground soil infiltration system sewage treatment unit
CN103482761B (en) * 2013-06-28 2015-11-18 张列宇 A kind of dark type underground filtration system is disposed of sewage the operation method of device
CN103938518A (en) * 2014-04-16 2014-07-23 同济大学 Method for constructing road runoff pollution control greening system
CN104110059A (en) * 2014-07-09 2014-10-22 同济大学 Ecological filter groove construction method for cutting urban runoff pollution
CN104402169A (en) * 2014-10-24 2015-03-11 江苏省交通科学研究院股份有限公司 Pretreatment reinforced anti-clogging constructed wetland for landscape water and river improvement
CN104402169B (en) * 2014-10-24 2016-04-20 苏交科集团股份有限公司 For the anticlogging artificial swamp of strenuous primary treatment of landscape water body and river regulation
CN104628138A (en) * 2015-01-21 2015-05-20 北京林业大学 Artificial wetland filler capable of efficiently removing nitrogen and phosphorous and preparation method thereof
CN105776763A (en) * 2016-04-27 2016-07-20 中国科学院水生生物研究所 Novel composite substrate for vertical flow artificial wetlands
CN107162202A (en) * 2017-06-29 2017-09-15 西施生态科技股份有限公司 A kind of substrate of vertical-flow constructed wetlands structural system

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