CN100506719C - Undercurrent-surface current composite artificial marshland - Google Patents

Undercurrent-surface current composite artificial marshland Download PDF

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CN100506719C
CN100506719C CNB2007100159963A CN200710015996A CN100506719C CN 100506719 C CN100506719 C CN 100506719C CN B2007100159963 A CNB2007100159963 A CN B2007100159963A CN 200710015996 A CN200710015996 A CN 200710015996A CN 100506719 C CN100506719 C CN 100506719C
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baffle plate
undercurrent
layer
water
water distribution
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CN101113050A (en
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张建
翟冰
张成禄
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Shandong University
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Shandong University
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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 invention provides a subsurface flow and surface flow complex manmade wetland. The complex manmade wetland comprises a land, a subsurface reservoir and a surface reservoir, a surface collecting pool and a subsurface collecting pool. One side of the land is provided with the subsurface reservoir and the surface collecting pool, and the other side of the land is provided with the subsurface collecting pool and the surface collecting pool. The subsoil of the land is filled with a gravel layer, and the upper soil is covered with a pastoral earth; the filling depth ratio between the gravel layer and the pastoral earth is 3: 2. Emersed plant, floating plant and submerged plant are planted on the pastoral earth of the upper soil of the land; the subsurface collecting pool is communicated with the surface reservoir through a water pipe equipped with a valve. The invention combines the advantages of subsurface wetland and surface wetland such as high water purification efficiency, high water quality, high hydraulic load, low investment and operational charge, and good treatment effect; according to actual need, a plurality of measures can be used such as alternatively adopting subsurface flow and surface flow, subsurface flow and surface flow.

Description

Undercurrent-surface current composite artificial marshland
Technical field
The invention belongs to the sewage purification field, specifically undercurrent-surface current composite artificial marshland.
Background technology
Artificial swamp be artificial build, the wet land system of controllable and through engineering approaches, its design and construction are to carry out wastewater treatment by the optimum combination to the physics in the wetland natural ecosystems, chemistry and biological action.Advantages such as the expense that it has investment and operation is low, good sewage processing effect.According to the flow pattern of sewage in artificial swamp, artificial swamp can be divided into surface current artificial wetland and subsurface constructed wetland.Surface current artificial wetland and natural wetland are similar, and promptly waste water is from wetland surface current mistake.Such artificial swamp has less investment, simple to operate, advantage such as working cost is low; Shortcoming is that floor space is big, and hydraulic load is low, and soil removability is limited, is subjected to weather effect bigger, and understand the living mosquitos and flies of evil, give an offensive smell summer.Current wetland is compared with surface-flow, and waterpower and pollution load are big, clean effect good, efficient is high, but it controls relative complex, investment cost height.In addition, because the artificial swamp The Application of Technology is in the primary stage, also there is deficiency aspect the processing high-concentration waste water.
Summary of the invention
The present invention is the deficiency that overcomes above-mentioned existing artificial swamp technology, and a kind of advantage latent, surface low type artificial swamp, undercurrent-surface current composite artificial marshland that cost is low, floor space is little, treatment effect is good of integrating is provided.
The present invention adopts following technical proposals to realize:
Undercurrent-surface current composite artificial marshland comprises a body, undercurrent layer tank, surface low layer tank, hydraulic pipe, waterplant, surface low layer water collecting basin and undercurrent layer water collecting basin; Water distribution baffle plate and back water distribution baffle plate before one side inside of bed body length direction is provided with, form undercurrent layer tank between the sidewall of bed body and the preceding water distribution baffle plate, form surface low layer tank between preceding water distribution baffle plate and the back water distribution baffle plate, be connected with undercurrent layer water inlet pipe between preceding water distribution baffle plate and the back water distribution baffle plate, this water inlet pipe one end is communicated with undercurrent layer tank, and an end is communicated with gravel bed; Water outlet baffle plate and back water outlet baffle plate before the opposite side inside of bed body length direction is provided with, form undercurrent layer water collecting basin between the sidewall of bed body and the back water outlet baffle plate, form surface low layer water collecting basin between preceding water outlet baffle plate and the back water outlet baffle plate, be provided with rising pipe between preceding water outlet baffle plate and the back water outlet baffle plate, this rising pipe one end is communicated with gravel bed, and an end is communicated with undercurrent layer water collecting basin; Behind the bed body inherence between water distribution baffle plate and the preceding water outlet baffle plate lower floor of part be filled with gravel bed, the upper strata covers the rural area soil layer, the filling depth ratio of gravel bed and rural area soil layer is 3:2; Plant in the rural area soil layer on bed body upper strata and be implanted with emergent, pleuston and submerged plant, undercurrent layer water collecting basin is communicated with surface low layer tank by hydraulic pipe, is provided with valve in the hydraulic pipe.
The bottom surface of bed body is carried out antiseepage and is handled.
Be furnished with the into circular duct of water on the preceding water distribution baffle plate, the top of back water distribution baffle plate is provided with surface low layer water distribution mouth.
Can connect lift pump in the hydraulic pipe, enter the water outlet of undercurrent layer water collecting basin with lifting.
The present invention is paved into bed of packings as latent, surface low layer filler respectively with gravel and rural area soil, and sewage is circulated at latent, surface low interlayer, and in bed surface planting aquatic plants, forms unique ecosystem.Sewage can play the effect of purifying waste water by physics chemical action such as absorption and filtrations in filler slit and bed surface process of flowing.
The present invention combines the advantage of current wetland and surface-flow, the cleaning water height, and effluent quality is good, and hydraulic load is big, has changed the sewage fluidised form in traditional artificial swamp, and operation maintenance management is convenient, and investment and running cost are low; Can adopt latent-surface low alternative expression, undercurrent type and surface low formula numerous embodiments during operation according to actual needs.
Description of drawings
Fig. 1 is a undercurrent-surface current composite artificial marshland diagrammatic cross-section of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the vertical view of the another kind of structure formation of the present invention;
Fig. 4 is the structural representation of water distribution baffle plate among the present invention.
Among the figure: 1, bed body; 2, undercurrent layer tank; 3, preceding water distribution baffle plate; 4, surface low layer tank; 5, undercurrent layer water inlet pipe; 6, back water distribution baffle plate; 7, emergent; 8, pleuston; 9, depression; 10, gravel bed; 11, rural area soil layer; 12, submerged plant; 13, preceding water outlet baffle plate; 14, surface low layer water collecting basin; 15, water table aquifer rising pipe; 16, back water outlet baffle plate; 17, undercurrent layer water collecting basin; 18, hydraulic pipe; 19, lift pump; 20, pipeline valve, 21, surface low layer water distribution mouth.
Embodiment
As shown in Figure 1, undercurrent-surface current composite artificial marshland of the present invention is in the depression 9 of certain Aspect Ratio, the water purification function of compound in vertical direction current wetland and surface-flow.Comprise a body 1, undercurrent layer tank 2, surface low layer tank 4, hydraulic pipe 18, waterplant, surface low layer water collecting basin 14 and undercurrent layer water collecting basin 17.Bed body 1 is built into by masonry and cement, and its Lower Half locates below ground level, and plays insulation effect.Water distribution baffle plate 3 and back water distribution baffle plate 6 formed undercurrent layer tank 2 before one side inside of bed body 1 length direction was provided with between the sidewall of bed body 1 and the preceding water distribution baffle plate 3, formed surface low layer tank 4 between preceding water distribution baffle plate 3 and the back water distribution baffle plate 6.Fig. 4 has provided the structural representation of preceding water distribution baffle plate 3 and back water distribution baffle plate 6, and preceding water distribution baffle plate 3 and back water distribution baffle plate 6 all are built into by masonry.Be furnished with the into circular duct of water on the preceding water distribution baffle plate 3, be connected to back water distribution baffle plate 6 by undercurrent layer water inlet pipe 5.The top of back water distribution baffle plate 6 is provided with surface low layer water distribution mouth 21.Be connected with undercurrent layer water inlet pipe 5 between preceding water distribution baffle plate 3 and the back water distribution baffle plate 6, these water inlet pipe 5 one ends are communicated with undercurrent layer tank 2, and an end is communicated with gravel bed 10.Water outlet baffle plate 13 and back water outlet baffle plate 16 before the opposite side inside of bed body 1 length direction is provided with, water outlet baffle plate and water distribution shutter configuration symmetry.Form undercurrent layer water collecting basin 17 between the sidewall of bed body 1 and the back water outlet baffle plate 16, form surface low layer water collecting basin 14 between preceding water outlet baffle plate 13 and the back water outlet baffle plate 16.The lower floor of part is filled with gravel bed 10 between bed body 1 inherent back water distribution baffle plate 6 and the preceding water outlet baffle plate 13, and the upper strata covers rural area soil 11, and the depth ratio that both fill is 3:2.The bottom surface of bed body 1 is carried out antiseepage and is handled.Be provided with rising pipe 15 between preceding water outlet baffle plate 13 and the back water outlet baffle plate 16, these rising pipe 15 1 ends are communicated with gravel bed 10, and an end is communicated with undercurrent layer water collecting basin 17.The waterplant of plantation economically valuable mainly is an emergent 7, as reed, wild rice hay-scented Pu etc. in the rural area soil layer 11 on bed body 1 upper strata; Pleuston 8 is as Herba potamogetonis distincti, floating heart etc.; Submerged plant 12 is as goldfish dish, bitter dish etc.
As shown in Figure 2, undercurrent layer water collecting basin 17 is communicated with surface low layer tank 4 by hydraulic pipe 18, is connected with lift pump 19 in the hydraulic pipe 18.The water outlet that enters undercurrent layer water collecting basin 17 can be promoted by lift pump 19, imports surface low layer tank 4 by hydraulic pipe 18, thereby enters the surface low layer.Hydraulic pipe 18 adopts the pvc pipe material, can be loaded on the ground, also can be embedded in the wetland.
As shown in Figure 3, also valve 20 can be set in hydraulic pipe 18, after water enters undercurrent layer water collecting basin 17, can directly open valve 20, move the water to flow into the surface low layer tank 32 of L type.
The present invention can be by following three kinds of modes when using:
1. dive-the surface low alternative expression, the water purification process of this mode mainly is divided into two stages:
Fs: sewage is introduced into undercurrent layer tank 2, behind the water distribution uniformity of the circular duct of preceding water distribution baffle plate 3, at first flows into current wetland bed body by undercurrent layer water inlet pipe 5, flows in the slit of gravel bed 10 and root system of plant.Behind the system stability, because the surface-area of gravel filling is bigger, a large amount of microorganism so can grow in its surface, and form microbial film.Because of the hydraulic load of current wetland is bigger, so in this process, a large amount of pollutents are tentatively removed in the sewage, wherein solid contaminant can directly be stopped by the root system of gravel and plant; Part organism is by the microbial film absorption degradation; By microorganism and plant absorbing, another part is removed by nitrated, denitrification as nutritive substance for N in the sewage, P-part.
Subordinate phase: when sewage arrives undercurrent layer water collecting basin 17, as take structure shown in Figure 2, under the effect of lift pump 19, inject surface low layer tank 4 by hydraulic pipe 18; As take structure shown in Figure 3, and open hydraulic pipe valve 20, under the effect of submersible pump 19, move the water to flow into the surface low layer tank 4 of L type.After entering surface low layer wetland by surface low layer tank 4, because the surface low layer has reoxygenation ability preferably, remaining organism can be by further oxygenolysis in the sewage.Sewage after the processing enters surface low layer water collecting basin 14 through preceding water outlet baffle plate 13.Still need further to purify as it, can utilize lift pump 19 that water is imported by surface low layer water collecting basin 14 equally to dive/tank of surface low layer, repeatedly purify the back and discharge by water collecting basin.
This embodiment mainly is applicable to the processing high-concentration sewage, can prolong the sewage flow process, to reach required decontamination effect improving according to the actual water quality situation control effluent cycle number of times latent, surface-flow of flowing through during operation.
2: undercurrent type
When this wet land system only was used as drowned flow artificial wet land, sewage entered undercurrent layer wetland from undercurrent layer tank 2 by undercurrent layer water inlet pipe 5.Because of the particle diameter of undercurrent layer gravel filling is bigger, sewage penetrates into a body bottom very soon, and flows in the slit of gravel and root system of plant.Behind the system stability, a large amount of microorganism of gravel filling surface meeting growth, and form microbial film.In this process, solid contaminant can be filtered by the root system of grain slag and plant in the sewage, organism is by the further absorption degradation of microbial film, N in the sewage, P are by bio-absorbable, or be removed by nitrated, denitrification, final sewage is discharged from undercurrent layer water collecting basin 17 through rising pipe 15 after fully purifying.
This embodiment is not subjected to the influence of seasonal variation, because this wetland bed body Lower Half locates below ground level, so heat insulation effect is better, is particularly useful for winter.
3: the surface low formula
When this wet land system only was used as the surface low artificial swamp, sewage was from surface low layer water distribution mouth 21 water inlets of surface low layer tank 4 by water distribution baffle plate 6 tops, back.Sewage is at first in the surface flow of wetland bed body, because the top layer has reoxygenation ability preferably, the especially oxidized decomposition of organism of most of pollutent in the water; Part of contaminated water gravitate and infiltrating wherein, and flowing in the slit of soil, gravel and root system of plant, behind the system stability, the gravel filling surface can a large amount of microorganisms of growth, and form microbial film, and pollutents such as N, P are further removed.After sewage is fully purified, discharge from water collecting basin 14 through preceding water outlet baffle plate 13.
This embodiment is applicable to the sewage of handling low concentration, and simple to operate, working cost is lower.
The present invention has the following advantages:
1, combine the advantage of current wetland and surface-flow, the cleaning water height, effluent quality is good, and the waterpower load is big;
2, changed sewage fluidised form in the Traditional Man wetland, and can be according to actual needs, control sewage is by the flow process of wetland, Reach the purpose that repeatedly purifies;
3, save floor space, operation maintenance management is convenient, and investment and operation take low;
4, be applicable to the processing of high-concentration waste water, do not produce stench, be difficult for multiplying mosquitos and flies;
5, it is little affected by seasonal climate, and wetland bed body Lower Half high insulating effect has guaranteed that this system is under cold weather conditions Normal operation.

Claims (5)

1. a undercurrent-surface current composite artificial marshland comprises a body, undercurrent layer tank, surface low layer tank, hydraulic pipe, waterplant, surface low layer water collecting basin and undercurrent layer water collecting basin; It is characterized in that: water distribution baffle plate and back water distribution baffle plate before a side inside of bed body length direction is provided with, form undercurrent layer tank between the sidewall of bed body and the preceding water distribution baffle plate, form surface low layer tank between preceding water distribution baffle plate and the back water distribution baffle plate, be connected with undercurrent layer water inlet pipe between preceding water distribution baffle plate and the back water distribution baffle plate, this water inlet pipe one end is communicated with undercurrent layer tank, and an end is communicated with gravel bed; Water outlet baffle plate and back water outlet baffle plate before the opposite side inside of bed body length direction is provided with, form undercurrent layer water collecting basin between the sidewall of bed body and the back water outlet baffle plate, form surface low layer water collecting basin between preceding water outlet baffle plate and the back water outlet baffle plate, be provided with rising pipe between preceding water outlet baffle plate and the back water outlet baffle plate, this rising pipe one end is communicated with gravel bed, and an end is communicated with undercurrent layer water collecting basin; Behind the bed body inherence between water distribution baffle plate and the preceding water outlet baffle plate lower floor of part be filled with gravel bed, the upper strata covers the rural area soil layer, the filling depth ratio of gravel bed and rural area soil layer is 3:2; Plant in the rural area soil layer on bed body upper strata and be implanted with emergent, pleuston and submerged plant; Undercurrent layer water collecting basin is communicated with surface low layer tank by hydraulic pipe, is provided with valve in the hydraulic pipe.
2. undercurrent-surface current composite artificial marshland according to claim 1 is characterized in that: the bottom surface of described bed body is carried out antiseepage and is handled.
3. undercurrent-surface current composite artificial marshland according to claim 1 is characterized in that: be furnished with the into circular duct of water before described on the water distribution baffle plate.
4. undercurrent-surface current composite artificial marshland according to claim 1 is characterized in that: the top of described back water distribution baffle plate is provided with surface low layer water distribution mouth.
5. undercurrent-surface current composite artificial marshland according to claim 1 is characterized in that: connect lift pump in the described hydraulic pipe.
CNB2007100159963A 2007-07-02 2007-07-02 Undercurrent-surface current composite artificial marshland Active CN100506719C (en)

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CN101274798B (en) * 2008-05-16 2010-06-02 哈尔滨工业大学 Composite constructed wetland system and pretreatment method for drinking water source
CN101844856A (en) * 2010-05-10 2010-09-29 山东大学 Sewage purification system of constructed wetland coupling SBR denitrification and phosphorus removal integration
CN102603111A (en) * 2011-01-21 2012-07-25 北京林业大学 Quick-start unpowered biologically enhanced constructed wetland system suitable for treating domestic sewage and waste water in small towns
CN102627376B (en) * 2012-04-18 2013-12-11 四川大学 Distributed sewage integrated artificial wetland treatment facility and method
CN103043800B (en) * 2012-12-28 2014-01-01 上海勘测设计研究院 Composite surface flow wetland system
CN103145251A (en) * 2013-03-29 2013-06-12 黄河勘测规划设计有限公司 Folding-flow artificial wetland system
CN103172226B (en) * 2013-04-15 2014-06-18 东南大学 Surface water stagnation type baffling wetland system for synchronously and intensively removing nitrogen, phosphorus and estrogen
CN104326563B (en) * 2014-10-31 2016-03-02 山东大学 The artificial swamp of a kind of undercurrent, surface low alternate run
CN104628142A (en) * 2015-02-03 2015-05-20 北京林业大学 Method for purifying water body by utilizing aquatic plants and riparian vegetation
CN104828950A (en) * 2015-05-08 2015-08-12 黄伟强 Processing method of domestic sewage
CN105217793B (en) * 2015-10-15 2017-12-01 山东大学 The artificial wet land system and operation method of the annual stable processing sanitary sewage of combined type
CN111115835B (en) * 2020-01-15 2021-05-07 中国水利水电科学研究院 Natural river sewage control system and method and design method

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