CN104176828B - Vertical subsurface flow formula soil ecology bed and the method processing sewage thereof - Google Patents

Vertical subsurface flow formula soil ecology bed and the method processing sewage thereof Download PDF

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CN104176828B
CN104176828B CN201410375647.2A CN201410375647A CN104176828B CN 104176828 B CN104176828 B CN 104176828B CN 201410375647 A CN201410375647 A CN 201410375647A CN 104176828 B CN104176828 B CN 104176828B
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bed
layer
ecological
subsurface flow
flow formula
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CN104176828A (en
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周振民
王学超
周科
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North China University of Water Resources and Electric Power
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North China University of Water Resources and Electric Power
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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 present invention relates to a kind of small-sized soil ecosystem device vertical subsurface flow formula soil ecology bed and sewage treatment method thereof.The present invention includes bed body, substrate hardware construction and ecological vegetable system, it is characterised in that: described substrate hardware construction is bottom-up is followed successively by gravel layer 10 ~ 15cm, coarse sands layer 5 ~ 8cm, fine sand layer 40 ~ 45cm and sandy loam layer 12 ~ 16cm;Phragmites communis, Caulis Zizaniae caduciflorae and Herba Typhae that described ecological vegetable system is planted on sandy loam layer by catch cropping are constituted, and planting density is 15~25 strains/m2.The ecological bed simple structure of the present invention, Cheap highly effective, full automation can be realized, there is good permeability, there is again good denitrogenation dephosphorizing function simultaneously, there is highly important application value.

Description

Vertical subsurface flow formula soil ecology bed and the method processing sewage thereof
Technical field
The invention belongs to environmental technology field, be specifically related to a kind of small-sized soil ecosystem device vertical subsurface flow formula soil ecology bed and the method processing sewage thereof.
Background technology
China starts late for the Controlling research of activity zone sewage, does not the most also have the technical measures that large-scale promotion is implemented.Currently comparing in the domestic sewage treatment technology path meeting national conditions come into one's own, waste water soil treatment technology is by common concern.
The rural sewage treatment technology of China is in the primary stage of research and development, compared with the developed countries such as Europe, the United States in addition to technical merit exists certain gap, there is also processing means and problem that system does not forms standardization and seriation, for rural area based on the feature of the middle-size and small-size sewage disposal of relative distribution, sewage treatment project is implemented on a large scale, it is necessary to the having efficiently of series products of development, the sewage disposal device of low-maintenance in rural area.Therefore, the experience of Developed Countries, develop and promote the integrated small sewage treatment facility tallied with the national condition, forming industrial production scale is a forward-looking and important technology research and development content for realistic meaning.The research of this type of technology will increase substantially the process of rural domestic sewage treatment, the integrated sewage disposal facility using industrialized production can significantly simplify the enforcement difficulty of engineering, improve the operability of engineering construction, the operational management and the water quality treatment that reduce construction costs, beneficially sewage treatment facility are stable.
At present, the traditional processing method of sanitary sewage is by sewage treatment plant's integrated treatment, but for the domestic sewage in rural areas of decentralized, uses sewage treatment plant in addition to needs sewage treatment facility, also need to build various transmission pipeline network remote, large-area, involve great expense.
Summary of the invention
For problem above, the present invention constructs a kind of small-sized soil ecosystem device vertical subsurface flow formula soil ecology bed.Described ecological bed simple structure, Cheap highly effective, full automation can be realized, there is good permeability, there is again good denitrogenation dephosphorizing function simultaneously, there is highly important application value.
The present invention is achieved through the following technical solutions:
The present invention designs a kind of vertical subsurface flow formula soil ecology bed, including bed body, substrate hardware construction and ecological vegetable system, described substrate hardware construction is bottom-up is followed successively by gravel layer 10 ~ 15cm, coarse sands layer 5 ~ 8cm, fine sand layer 40 ~ 45cm and sandy loam layer 12 ~ 16cm;Phragmites communis, Caulis Zizaniae caduciflorae and Herba Typhae that described ecological vegetable system is planted on sandy loam layer by catch cropping are constituted, and planting density is 15~25 strains/m2
For above-mentioned vertical subsurface flow formula soil ecology bed, described phragmites communis, Caulis Zizaniae caduciflorae and Herba Typhae planting proportion are 1:1:1.
Currently, people depend on experience to a certain extent to the selection of wetland plant, and more lack various plant application in the systematic study of the effect of sewage disposal.The present invention passes through systematic study, phragmites communis, Caulis Zizaniae caduciflorae and Herba Typhae catch cropping has been selected to be built into the synergistic ecological vegetable system of energy, the well developed root system of these three kinds of plants, collocation is rationally, a three-dimensional network-like structure can be formed, phragmites communis therein, Herba Typhae energy flocculated colloid, elimination pathogen, and the two also has the aerating tissue of prosperity, oxygen is carried to plant rhizosphere, special aerobic-anaerobic environment is formed in plant roots district, adapt to the growth of various microorganism, indirectly promote the degraded of various pollutant in sewage;Caulis Zizaniae caduciflorae increment is big, strong to the absorbability of nitrogen, phosphorus;Cattail Plant has special structure and function, if blade is the structures such as meat, palisade tissue is flourishing, pore depression, subterraneous stem are flourishing, thus can the phosphorus in purifying domestic sewage and industrial wastewater, nitrogen, COD effectivelycr、BOD5, the polluter such as total suspended matter (TSS).Additionally, research shows, the root exudates (such as saccharide, alcohols, aminoacid etc.) of these three plant can promote some addicted to the growth of P, N antibacterial, and the antibacterial of plant root is high 1~2 order of magnitude than medium place.Increasing of bacterial number, asks the sewage purification ability connecing raising system.
For above-mentioned vertical subsurface flow formula soil ecology bed, described bed body is open-topped lucite semicylinder, and its vertical reclines body of wall, radius 50 ~ 60cm.
For above-mentioned vertical subsurface flow formula soil ecology bed, described gravel layer thickness is 12cm, and gross sand thickness is 6cm, and fine sand layer thickness is 43cm, and sandy loam layer thickness is 15cm.
For above-mentioned vertical subsurface flow formula soil ecology bed, by weight percentage, containing attapulgite modified 5~10% in described sandy loam layer, described attapulgite modified preparation method is as follows:
(1) pretreatment: cross 20~100 mesh sieves after being ground by attapulgite, calcines 3~5h at 200 DEG C, washs several times to washings clarification post-drying after soaking 20~30h with deionized water, standby;
(2) activation modification: with volume fraction be 2~4% acetum slowly dissolve a certain amount of chitosan, consumption is as the criterion with the chitosan gum liquid solution being made into thickness, take step gained attapulgite to mix with this chitosan gum liquid solution a certain amount of and stir into pasty state, chitosan gum liquid solution consumption is so that attapulgite is as the criterion by fully infiltration, again gained pastel is placed at 105 DEG C and is dried,.
Attapulgite has the chain layered crystal structure of uniqueness and the most tiny bar-shaped, fibrous crystal form, and has many special physicochemical properties, such as adsorptivity, ion-exchange capacity and plasticity etc..Attapulgite is carried out suitable modification, its physicochemical properties can be changed.Through said method obtained attapulgite modified not only to Cu2+、Pb2+、Cd2+、Zn2+There are preferable adsorption and removal ability Deng metal ion and colourity, and in acid condition phosphate anion is had the highest absorbability :-the OH of protonation in positively charged modified attapulgite soil particle and chitosan molecule2 +With-NH3 +Can H in adsorbent solution effectively2P04 -、HPO4 2-And PO4 3-Ion.
For above-mentioned vertical subsurface flow formula soil ecology bed, the particle diameter of described coarse sands layer medium coarse sand is 2 ~ 4mm, and the particle diameter of fine sand layer medium-fine sand is less than 1mm, and gravel layer cobble-stone particle diameter is 2~60mm, and the sandy loam particle diameter in sandy loam layer is less than 0.10 mm.
For above-mentioned vertical subsurface flow formula soil ecology bed, described ecological bed top is provided with water inlet, and bottom is provided with outlet, and bed body inwall is provided with for controlling the level sensor that inlet valve opens and closes.
The present invention also designs a kind of method utilizing above-mentioned vertical subsurface flow formula soil ecology bed to process sewage, comprise the steps: first, treatment sewage is introduced from ecological bed top, water inlet is closed after treatment sewage water level arrives at more than fine sand layer 5 ~ 8cm, it is then turned on after water level decreasing 4 ~ 6min into water, repeating to enter next processing procedure, ecological bed hydraulic detention time is 6 ~ 8d, hydraulic load 15 ~ 18L/m3/d。
For the above-mentioned processing method stated, before introducing treatment sewage, first regulate its pH value to 6.5 ~ 8, temperature to 20 ~ 25 DEG C.
For the above-mentioned processing method stated, after treatment sewage water level arrives at the above 6cm of fine sand layer, close water inlet, after 5min, open water inlet;Described ecological bed hydraulic detention time is 7d, hydraulic load 17L/m3/d。
The positive beneficial effect of the present invention:
Vertical subsurface flow formula soil ecology bed the most of the present invention is made up of different substrates and ecosystem, there is good permeability, there is again good denitrogenation dephosphorizing function simultaneously, residential block of living can be widely used in as the midget plant of sanitary sewage disposal, it is demonstrated experimentally that the sanitary sewage passing through the process of this device can reach the sewage disposal discharge standard of (GB3838-2002);
Vertical subsurface flow formula soil ecology bed the most of the present invention is cheap, simple structure, about about 200 yuan of average each device, is especially suitable for ordinarily resident family and uses;
Vertical subsurface flow formula soil ecology bed the most of the present invention uses automatic pump intermittent mode to run, and flows to water in conjunction with gravity, and after arriving the water level that ecological soil bed sets, water intaking valve is automatically switched off, and defines full automatic soil ecosystem;
4. apparatus of the present invention are in addition to sanitary sewage disposal, it is also possible to be used as greening home environment;Promoting the use of of this device, can reduce the burden of town and country wastewater reuse approach, thus improve and beautify integrated environment.
Accompanying drawing explanation
Fig. 1 is vertical subsurface flow formula soil ecology bed cross-sectional view of the present invention;Wherein 1 is bed body, and 2 is ecological botanical system, and 3 is gravel layer, and 4 is coarse sands layer, and 5 is fine sand layer, and 6 is sandy loam layer, and 7 is water inlet, and 8 is outlet.
Fig. 2 is 1 ~ 4 pair of T-N removal effect comparison diagram of embodiment;Wherein C is embodiment 2, and P1 is embodiment 1, and P2 is embodiment 3, and P3 is embodiment 4;Lower same.
Fig. 3 is 1 ~ 4 couple of NH of embodiment4 +-N Removal effect comparison diagram.
Fig. 4 is the removal effect comparison diagram of 1 ~ 4 couple of T-P of embodiment.
Fig. 5 is 1 ~ 4 couple of BOD of embodiment5Removal effect comparison diagram.
Fig. 6 is 1 ~ 4 couple of COD of embodimentCrRemoval effect comparison diagram.
Detailed description of the invention
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
The present embodiment vertical subsurface flow formula soil ecology bed includes bed body, substrate hardware construction and ecological vegetable system (see figure 1), and described substrate hardware construction is bottom-up is followed successively by gravel layer 12cm, coarse sands layer 6cm, fine sand layer 43cm and sandy loam layer 15cm;Phragmites communis, Caulis Zizaniae caduciflorae and Herba Typhae that described ecological vegetable system is planted on sandy loam layer by catch cropping are constituted, and planting density is 20 strains/m2, phragmites communis, Caulis Zizaniae caduciflorae and Herba Typhae are with 1:1:1 intercropping plant.
Described ecological bed bed body uses open-topped lucite semicylinder to make, and high 88cm, radius 56cm, its vertical reclines body of wall to save the interior space.The particle diameter of described coarse sands layer medium coarse sand is 2 ~ 4mm, and the fine sand particle diameter of fine sand layer is less than 1mm, and gravel layer cobble-stone particle diameter is 2~60mm, and the sandy loam particle diameter in sandy loam layer is less than 0.10 mm.Described ecological bed top is provided with water inlet, and bottom is provided with outlet, and bed body inwall is provided for controlling the level sensor that inlet valve opens and closes.
By weight percentage, containing attapulgite modified 8% in described sandy loam layer, described attapulgite modified preparation method is as follows:
(1) pretreatment: cross 60 mesh sieves after being ground by attapulgite, calcines 4h at 200 DEG C, washs several times to washings clarification post-drying after soaking 24h with deionized water, standby;
(2) activation modification: slowly dissolve a certain amount of chitosan with the acetum that volume fraction is 3%, consumption is as the criterion with the chitosan gum liquid solution being made into thickness, take step gained attapulgite to mix with this chitosan gum liquid solution a certain amount of and stir into pasty state, chitosan gum liquid solution consumption is so that attapulgite is as the criterion by fully infiltration, again gained pastel is placed at 105 DEG C and is dried,.
The method using the present embodiment vertical subsurface flow formula soil ecology bed process sewage is as follows:
First, treatment sewage is regulated pH value to 6.5 ~ 8, temperature to 20 ~ 25 DEG C, introduce from ecological bed top again, after treatment sewage water level arrives at the above 6cm of fine sand layer, level sensor is automatically switched off inlet valve, automatically turns on inlet valve after water level decreasing 5min again, repeats to enter next processing procedure, ecological bed hydraulic detention time is 7d, hydraulic load 17L/m3/ d, during process, outlet continues water outlet.
Embodiment 2~4
In addition to ecological vegetable system is different from embodiment 1, the other the same as in Example 1.Embodiment 2 is blank, without ecosystem, the ecological ecological vegetable system of embodiment 3 ~ 4 be respectively phragmites communis with Herba Typhae with 1:1 catch cropping, phragmites communis with Caulis Zizaniae caduciflorae with 1:1 catch cropping.
For embodiment 1~4 , carry out wastewater treatment efficiency experiment:
The present invention is ecological bed pollutant are removed mainly adsorbed by Crop, root system and substrate, retain, precipitation and microbial decomposition metabolism complete jointly.
Water inlet pollutional load such as table 1.
Table 1 experimental design influent quality (mg/L)
Water inlet BOD COD T-N T-P T-S NH4 +-N Basicity Oils and fats
Underload 200 400 40 8 720 40 100 100
High load capacity 400 1000 80 15 1200 60 200 150
(1) the vertical subsurface flow formula soil ecology bed purifying property to T-N
The contrast of T-N removal effect is shown in that (C is embodiment 2 to Fig. 2, and P1 is embodiment 1, and P2 is embodiment 3, and P3 is embodiment 4 by the different plantation patterns of ecological vegetable system of the present invention;Following figure is same), as seen from the figure, P1 bed T-N clearance is more than 95%, hence it is evident that higher than P2 bed and P3 bed, illustrates that phragmites communis, Caulis Zizaniae caduciflorae and three kinds of plant companion plantings of Herba Typhae add diversity of organism, it is possible to increase nitric efficiency.C is without plant bed T-N clearance average out to about 40%, and in March, 2007 is the highest, reaches more than 60%, and hereafter nitric efficiency starts to reduce, and illustrates to have adsorbed saturated without plant bed substrate.
(2) vertical subsurface flow formula soil ecology bed is to NH4 +The removal behavior of-N
Ammonia nitrogen transform mode in ecological soil system mainly has three: gaseous volatilization, plant absorption and Nitrification.Under the conditions of specific influent load, Nitrification is ecological soil system NH4 +The main path that-N removes.Nitration reaction is the first kernel response of ammonium, generally carries out under conditions of aerobic.Affect nitration reaction because have: temperature, pH value, humidity, microbiologic population, NH4 +-N Concentration and dissolved oxygen concentration etc..
The different plantation patterns of ecological vegetable system of the present invention are to NH4 +Fig. 3 is shown in the contrast of-N removal effect, from the figure 3, it may be seen that companion planting pattern P1 average of the whole year water outlet NH4 +-N is 2.8mg/L, without plant bed for 8mg/L, P2 bed be 5mg/L, P3 bed be 3.8mg/L.P1 bed NH4 +-N Average annual clearance is the highest, P2 bed NH4 +-N Average annual clearance is minimum in three kinds of companion planting systems, shows that Herba Typhae may be carried out by suppression ecological soil system Nitrification, and Caulis Zizaniae caduciflorae then may promote that system Nitrification is carried out, and Caulis Zizaniae caduciflorae is better than the Herba Typhae inhibitory action to nitration reaction to the facilitation of nitration reaction.2006 8~by the end of November, P1 bed NH4 +-N clearance persistently keeps higher level, and the plant vigorous period after system stable operation is described, three kinds of plants are to NH4 +-N Collaborative utilization rate high.
(3) the vertical subsurface flow formula soil ecology bed purifying property to T-P
Ecological soil system retains mainly absorption and precipitation, plant absorption, Microorganism incubation and peat growth etc. by substrate and realizes phosphorus.The factor affecting system dephosphorization mainly has: temperature, floristics and substrate etc..
The contrast of T-P removal effect is shown in Fig. 4 by the different plantation patterns of ecological vegetable system of the present invention, and as shown in Figure 4, the T-P clearance of companion planting system P1 bed and P3 bed is the highest, more than 90%.Vegetation period, C is lower than plant bed without plant bed T-P clearance;Hypothermic phase, difference is little.The vegetation period of explanation, root system activity enlivens, and neighbouring microbial metabolism function is strengthened, thus the P1 bed effect of the substrate absorption and chemical precipitation, especially three kinds of plant companion plantings enhancing phosphorus becomes apparent from.
(4) vertical subsurface flow formula soil ecology bed is to BOD5Purifying property
The different plantation patterns of ecological vegetable system of the present invention are to BOD5Removal effect contrast is shown in Fig. 5, as shown in Figure 5, for companion planting system P1, BOD5Clearance average is all more than 95%, and the fluctuation of P3 bed is less.
(5) vertical subsurface flow formula soil ecology bed is to CODCrPurifying property
For the different plantation patterns of ecological vegetable system, CODCrClearance change curve is shown in Fig. 6.Companion planting P1 bed, P2 bed and P3 bed CODCrClearance average is all about 80%, and wherein, the hybrid pattern of P1 can reach more than 90% at plant growing clearance in vigorous season.
Embodiment 5
The present embodiment vertical subsurface flow formula soil ecology bed includes bed body, substrate hardware construction and ecological vegetable system (see figure 1), and described substrate hardware construction is bottom-up is followed successively by gravel layer 10cm, coarse sands layer 5cm, fine sand layer 40cm and sandy loam layer 12cm;Phragmites communis, Caulis Zizaniae caduciflorae and Herba Typhae that described ecological vegetable system is planted on sandy loam layer by catch cropping are constituted, and planting density is 15 strains/m2, phragmites communis, Caulis Zizaniae caduciflorae and Herba Typhae are with 1:1:1 intercropping plant.
Described ecological bed bed body uses open-topped lucite semicylinder to make, and high 80cm, radius 50cm, its vertical reclines body of wall to save the interior space.The particle diameter of described coarse sands layer medium coarse sand is 2 ~ 4mm, and the fine sand particle diameter of fine sand layer is less than 1mm, and gravel layer cobble-stone particle diameter is 2~60mm, and the sandy loam particle diameter in sandy loam layer is less than 0.10 mm.Described ecological bed top is provided with water inlet, and bottom is provided with outlet, and bed body inwall can be provided for controlling the level sensor that inlet valve opens and closes.
By weight percentage, containing attapulgite modified 5% in described sandy loam layer, described attapulgite modified preparation method is as follows:
(1) pretreatment: cross 20 mesh sieves after being ground by attapulgite, calcines 3h at 200 DEG C, washs several times to washings clarification post-drying after soaking 20h with deionized water, standby;
(2) activation modification: slowly dissolve a certain amount of chitosan with the acetum that volume fraction is 2%, consumption is as the criterion with the chitosan gum liquid solution being made into thickness, take step gained attapulgite to mix with this chitosan gum liquid solution a certain amount of and stir into pasty state, chitosan gum liquid solution consumption is so that attapulgite is as the criterion by fully infiltration, again gained pastel is placed at 105 DEG C and is dried,.
The method using the present embodiment vertical subsurface flow formula soil ecology bed process sewage is as follows:
First, treatment sewage is regulated pH value to 6.5 ~ 8, temperature to 20 ~ 25 DEG C, introduce from ecological bed top again, after treatment sewage water level arrives at the above 5cm of fine sand layer, level sensor is automatically switched off inlet valve, is then turned on into water after water level decreasing 4min, repeats to enter next processing procedure, ecological bed hydraulic detention time is 6d, hydraulic load 16L/m3/d。
Embodiment 6
The present embodiment vertical subsurface flow formula soil ecology bed includes bed body, substrate hardware construction and ecological vegetable system (see figure 1), and described substrate hardware construction is bottom-up is followed successively by gravel layer 15cm, coarse sands layer 8cm, fine sand layer 45cm and sandy loam layer 16cm;Phragmites communis, Caulis Zizaniae caduciflorae and Herba Typhae that described ecological vegetable system is planted on sandy loam layer by catch cropping are constituted, and planting density is 25 strains/m2, phragmites communis, Caulis Zizaniae caduciflorae and Herba Typhae are with 1:1:1 intercropping plant.
Described ecological bed bed body uses open-topped lucite semicylinder to make, and high 90cm, radius 60cm, its vertical reclines body of wall to save the interior space.The particle diameter of described coarse sands layer medium coarse sand is 2 ~ 4mm, and the fine sand particle diameter of fine sand layer is less than 1mm, and gravel layer cobble-stone particle diameter is 2~60mm, and the sandy loam particle diameter in sandy loam layer is less than 0.10 mm.Described ecological bed top is provided with water inlet, and bottom is provided with outlet, and bed body inwall can be provided for controlling the level sensor that inlet valve opens and closes.
By weight percentage, containing attapulgite modified 10% in described sandy loam layer, described attapulgite modified preparation method is as follows:
(1) pretreatment: cross 100 mesh sieves after being ground by attapulgite, calcines 5h at 200 DEG C, washs several times to washings clarification post-drying after soaking 30h with deionized water, standby;
(2) activation modification: slowly dissolve a certain amount of chitosan with the acetum that volume fraction is 4%, consumption is as the criterion with the chitosan gum liquid solution being made into thickness, take step gained attapulgite to mix with this chitosan gum liquid solution a certain amount of and stir into pasty state, chitosan gum liquid solution consumption is so that attapulgite is as the criterion by fully infiltration, again gained pastel is placed at 105 DEG C and is dried,.
The method using the present embodiment vertical subsurface flow formula soil ecology bed process sewage is as follows:
First, treatment sewage is regulated pH value to 6.5 ~ 8, temperature to 20 ~ 25 DEG C, introduce from ecological bed top again, after treatment sewage water level arrives at the above 8cm of fine sand layer, level sensor is automatically switched off inlet valve, is then turned on into water after water level decreasing 6min, repeats to enter next processing procedure, ecological bed hydraulic detention time is 8d, hydraulic load 18L/m3/d。
The invention is not limited in above-mentioned detailed description of the invention, those skilled in the art also can make multiple change accordingly, but any all should contain within the scope of the claims with present invention equivalent or similar change.

Claims (8)

1. a vertical subsurface flow formula soil ecology bed, including bed body, substrate hardware construction and ecological vegetable system, it is characterised in that: described substrate hardware construction is bottom-up is followed successively by gravel layer 10 ~ 15cm, coarse sands layer 5 ~ 8cm, fine sand layer 40 ~ 45cm and sandy loam layer 12 ~ 16cm;Phragmites communis, Caulis Zizaniae caduciflorae and Herba Typhae that described ecological vegetable system is planted on sandy loam layer by catch cropping are constituted, and planting density is 15~25 strains/m2, described phragmites communis, Caulis Zizaniae caduciflorae and Herba Typhae planting proportion are 1:1:1;
By weight percentage, containing attapulgite modified 5~10% in described sandy loam layer, described attapulgite modified preparation method is as follows:
(1) pretreatment: cross 20~100 mesh sieves after being ground by attapulgite, calcines 3~5h at 200 DEG C, washs several times to washings clarification post-drying after soaking 20~30h with deionized water, standby;
(2) activation modification: with volume fraction be 2~4% acetum slowly dissolve a certain amount of chitosan, consumption is as the criterion with the chitosan gum liquid solution being made into thickness, take step gained attapulgite to mix with this chitosan gum liquid solution a certain amount of and stir into pasty state, chitosan gum liquid solution consumption is so that attapulgite is as the criterion by fully infiltration, again gained pastel is placed at 105 DEG C and is dried,.
Vertical subsurface flow formula soil ecology bed the most according to claim 1, it is characterised in that: described bed body is open-topped lucite semicylinder, and its vertical reclines body of wall, radius 50 ~ 60cm.
Vertical subsurface flow formula soil ecology bed the most according to claim 1, it is characterised in that: described gravel layer thickness is 12cm, and gross sand thickness is 6cm, and fine sand layer thickness is 43cm, and sandy loam layer thickness is 15cm.
Vertical subsurface flow formula soil ecology bed the most according to claim 1, it is characterized in that: the particle diameter of described coarse sands layer medium coarse sand is 2 ~ 4mm, the particle diameter of fine sand layer medium-fine sand is less than 1mm, and gravel layer cobble-stone particle diameter is 2~60mm, and the sandy loam particle diameter in sandy loam layer is less than 0.10 mm.
Vertical subsurface flow formula soil ecology bed the most according to claim 1, it is characterised in that: described ecological bed top is provided with water inlet, and bottom is provided with outlet, and bed body inwall is provided with for controlling the level sensor that inlet valve opens and closes.
6. one kind utilizes the method that vertical subsurface flow formula soil ecology bed described in any one of claim 1 ~ 5 processes sewage, comprise the steps: first, treatment sewage is introduced from ecological bed top, water inlet is closed after treatment sewage water level arrives at more than fine sand layer 5 ~ 8cm, it is then turned on after water level decreasing 4 ~ 6min into water, repeating to enter next processing procedure, ecological bed hydraulic detention time is 6 ~ 8d, hydraulic load 15 ~ 18L/m3/d。
Method the most according to claim 6, it is characterised in that: introduce before treatment sewage, first regulate its pH value to 6.5 ~ 8, temperature to 20 ~ 25 DEG C.
Method the most according to claim 6, it is characterised in that: after treatment sewage water level arrives at the above 6cm of fine sand layer, close water inlet, after 5min, open water inlet;Described ecological bed hydraulic detention time is 7d, hydraulic load 17L/m3/d。
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101838053A (en) * 2009-03-20 2010-09-22 宝山钢铁股份有限公司 Method for constructing artificial wetland through aged refuse for processing sewage
CN101891304A (en) * 2010-07-13 2010-11-24 江西省环境保护科学研究院 Tidal flow constructed wetland with rich reoxygenation
US8252182B1 (en) * 2008-09-11 2012-08-28 University Of Central Florida Research Foundation, Inc. Subsurface upflow wetland system for nutrient and pathogen removal in wastewater treatment systems
CN103145248A (en) * 2011-12-07 2013-06-12 淮南矿业(集团)有限责任公司 Method and system for preventing and treating water pollution in core-mining subsidence area
CN204097202U (en) * 2014-08-01 2015-01-14 华北水利水电大学 Vertical subsurface flow formula soil ecology bed

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8252182B1 (en) * 2008-09-11 2012-08-28 University Of Central Florida Research Foundation, Inc. Subsurface upflow wetland system for nutrient and pathogen removal in wastewater treatment systems
CN101838053A (en) * 2009-03-20 2010-09-22 宝山钢铁股份有限公司 Method for constructing artificial wetland through aged refuse for processing sewage
CN101891304A (en) * 2010-07-13 2010-11-24 江西省环境保护科学研究院 Tidal flow constructed wetland with rich reoxygenation
CN103145248A (en) * 2011-12-07 2013-06-12 淮南矿业(集团)有限责任公司 Method and system for preventing and treating water pollution in core-mining subsidence area
CN204097202U (en) * 2014-08-01 2015-01-14 华北水利水电大学 Vertical subsurface flow formula soil ecology bed

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
会宁凹凸棒石粘土的改性及对废水中镍的处理研究;胡显锋;《兰州理工大学硕士学位论文》;20110831;第32-34页 *
马源20110315.人工湿地生态系统对高速公路服务设施生活污水处理研究.《中国优秀硕士学位论文全文数据库(工程科技Ⅰ辑)》.2011,(第3期), *
黎珊等.凹凸棒土的应用研究进展.《化工进展》.2013,第32卷(第12期), *

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