CN207726821U - A kind of sewage treatment plant tail water artificial wet land treating system - Google Patents
A kind of sewage treatment plant tail water artificial wet land treating system Download PDFInfo
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Abstract
The utility model provides a kind of sewage treatment plant tail water artificial wet land treating system, includes at least shallow water multistage drop canal, artificial combination unit wetland, current wetland and biological stabilization pond；The shallow water multistage drop canal includes water channel and multistage drop dam, the artificial combination unit wetland includes aerobic nitrification area, anoxic denitrification area and settling zone, the current wetland includes inlet channel, microbial reaction area, wetland plant and outlet canal, the biological stabilization pond is equipped with aquatic plant system and aquatic animal system, sewage is successively by shallow water multistage drop canal, artificial combination unit wetland, current wetland and biological stabilization pond, evergreen eel grass and emergent aquactic plant are downgraded in plantation in the shallow water multistage drop canal, the aerobic nitrification area and anoxic denitrification area of the artificial combination unit wetland are intervally arranged several microorganisms growth base units, current wetland microbial reaction area is from top to bottom, the lime stone of grain size from small to large, volcanic rock and gravel.
Description
Technical field
The utility model is related to field for the treatment of of water pollution, and the Manual moist for being especially used for sewage treatment plant tail water processing is located in
Reason system.
Background technology
Sewage treatment plant tail water is directly discharged into neighbouring water body not only can generate harm to quality of the region's water, also can
Directly threaten people's lives environment.Tailwater Depth handle engineering construction implement after to mitigate Nesting Zone tap water supply and demand pressure,
Improve people life quality to be of great significance.
Traditional artificial wet land system is mainly made up of the purification of contaminant species soil, microorganism and plant
Stablize the good catharsis of the ecosystem and is able to biomembrane, abundant root system and the topsoil degrading and grown with filler surface
Filler the effects that shutting off processing capacity and effect are provided.
Traditional artificial swamp type and technology have the following disadvantages：
(1) traditional wetland load is smaller, and the residence time is short, most of at 3-5 days or so, takes up a large area；
(2) traditional wetland variation is less efficient, and the oxygen source in wetland mainly passes through the defeated of the photosynthesis of plant and root system
It send or oxygen-enriched by water level height difference down stream, in the period of spring and summer plant growth is vigorous, is ensureing enough residence times
Under the premise of, corresponding treatment effect can be reached；When autumn and winter temperature is relatively low, due to withered and microbial activity the drop of plant
Low, dissolved oxygen is often insufficient for the oxidation of organic matter and the nitration reaction of ammonia nitrogen, while under anaerobic environment, wetland does not have yet
There are enough carbon sources to realize that the anti-nitration reaction of nitrogen, wetland variation efficiency can be remarkably decreased, polluter can not be carried out
Effectively purification, effluent quality can not stably reaching standard, wetland also is difficult to sewage plant tail water treatment effect to reach IV category of earth's surface
It is accurate；
(3) traditional wetland is withered and rotten due to plant in autumn and winter, treatment effeciency reduces, while plant is rotted
It may lead to the release again of pollutant.
Utility model content
The utility model provides a kind of artificial wet land treating system for sewage treatment plant tail water processing, the artificial swamp
Occupation of land is greatly saved in processing system, while handling water efficiency and improving especially autumn and winter treatment effeciency raising, so as to
Realize that processed water stably reaches IV class standard of water environment quality standard throughout the year.
The technical solution of the utility model is as follows：
A kind of sewage treatment plant tail water artificial wet land treating system includes that shallow water multistage drops successively according to sewage flow direction
Canal, artificial combination unit wetland, current wetland and biological stabilization pond；Wherein,
The shallow water multistage drop canal includes water channel and multistage drop dam；
The artificial combination unit wetland includes aerobic nitrification area, anoxic denitrification area and settling zone；
The current wetland includes inlet channel, microbial reaction area, wetland plant and outlet canal；
The biological stabilization pond is equipped with aquatic plant system and aquatic animal system；
Also,
Evergreen eel grass and emergent aquactic plant are downgraded in plantation in the shallow water multistage drop canal；
The aerobic nitrification area and anoxic denitrification area of the artificial combination unit wetland are also intervally arranged the life of several microorganisms
Long base unit, several microorganism growth base units include denitrification zone oxygen-starved unit module and nitrification zone aerobic unit
Two class of module；The artificial combination unit wetland further includes fluitante and zoobenthos, the fluitante expire cover plant plant in
The water surface of the artificial combination unit wetland, the zoobenthos are put in a suitable place to breed in the settling zone of the artificial combination unit wetland
Bottom；
The flow of the current wetland is flow vertically downward, and the microbial reaction area of the current wetland is from top to bottom
Planting soil, lime stone, volcanic rock and the gravel of grain size from small to large；
The aquatic plant system of the biological stabilization pond is divided into emergent aquactic plant and submerged plant, and the submerged plant includes short
Change more than one of evergreen eel grass, hydrilla verticillata, waterweed, hornwort and p.malaianus, the biological stabilization pond it is aquatic
Animal system includes scraping feeding habits zoobenthos and/or filter-feeding fish.
Preferably, the shallow water multistage drop canal is divided into two-stage drop, and drop, every grade of drop are realized by the gravel dam that drops
Height difference 30cm；For the drop water in a canal depth 60cm hereinafter, evergreen eel grass is downgraded in main plantation, plantation emergent aquactic plant is interspersed on bank；Institute
Shallow water multistage drop canal is stated using native pool structure.
Preferably, be horizontally also intervally arranged several nitrification zone aerobic unit modules in the aerobic nitrification area, institute
State several denitrification zone oxygen-starved unit modules that are horizontally also intervally arranged in anoxic denitrification area, the nitrification zone aerobic
Unit module, the denitrification zone oxygen-starved unit module further include having filler support, the nitrification zone aerobic unit mould
It is respectively equipped with different types of denitrogenation filler on the filler support in block and the denitrification zone oxygen-starved unit module, exposes
Device of air is installed under the filler support of the nitrification zone aerobic unit module.
Preferably, aerator is equipped in the aerobic nitrification area, the aerobic nitrification area is additionally provided with air inlet supervisor, described
Air inlet supervisor connect with the aerator, and the air inlet supervisor connection air blower is supplied；The anoxic denitrification area is also
Including supplementary carbon source device, the supplementary carbon source device connects sewage plant raw sewerage raw water by pipeline, as institute
State the supplementary carbon source in anoxic denitrification area.
Preferably, the artificial combination unit wetland further includes bottom of pond structure, the aerobic nitrification area, anoxic denitrification area
It is respectively positioned on the upside of the bottom of pond structure with the settling zone, bottom of pond structure periphery is equipped with peripheral structure；The artificial combination
2.5 meters of the unit depth of water.
Preferably, the aerobic nitrification area, be additionally provided with lateral partition-type structures in the anoxic denitrification area, the transverse direction every
The lower end of disconnected structure is connect with the bottom of pond of the artificial combination unit wetland, and upper end is slightly above ordinary water level, the laterally partition knot
The length of structure is the 75% of entire lateral length；The transverse direction partition-type structures are divided into multigroup, extend sewage in the anti-nitre of the nitrification
Change the residence time in area；Being thrown in the settling zone has high molecular polymerization molysite or aluminium salt.
Preferably, the artificial combination unit wetland further includes floating vegetation and zoobenthos, and the fluitante completely spreads
It plants in the artificial combination unit wetland surface, the mainly poly- grass of the fluitante and mushroom grass, the zoobenthos are put
It supports in the bottom of the settling zone of the artificial combination unit wetland, the zoobenthos is mainly Bellamya sp and anodon.
Preferably, the current wetland is vertical subsurface flow wetland, including inlet channel, microbial reaction area and outlet canal, is gone back
It catchments pipeline including water distribution pipe road and water outlet, the water distribution pipe road, the water outlet pipeline that catchments are all made of PVC material；
The microbial reaction area totally 5 floor from top to bottom, is followed successively by：Planting soil layer, geotextile layer, limestone layer, volcanic filling material
Layer and gravel layer；The planting soil layer is provided as wetland plant planting matrix, plants one or more wetland plants thereon；Institute
It states geotextile layer and uses 120g/m2Geotextiles；The water distribution pipe route the inlet channel and passes through the current wetland pool wall
And it is embedded in the top of the volcanic filling material layer, and moisturizing form water distribution is punched using pipeline, the water distribution pipe road is worn
Cross pool wall；The water outlet catchment pipeline be located at the gravel layer bottom and be equipped with multiple holes, by going out described in punching
The water pipeline that catchments is catchmented and wetland pool wall is passed through to enter braiding channel；The inlet channel and outlet canal are respectively arranged at wetland two
Side；The bottom of pond of the current wetland is built using concrete structure, and pool wall uses brickwork construction；It is planted in the planting soil layer
There is wetland plant.
Preferably, grain size of gravel becomes smaller the gravel layer successively from lower to upper, bottom grain size of gravel be 3cm~
5cm, top layer's grain size of gravel are 1cm~1.5cm, and the gravel layer height is 40cm；The volcano rock stratum, grain size 5mm are high
Degree is 50cm；The limestone layer grain size is 3mm~5mm, is highly 40cm.
Preferably, the biological stabilization pond includes aquatic plant system and aquatic animal system；The aquatic plant system
Based on submerged plant, supplemented by emergent aquactic plant, the submerged plant accounts for 80% or more, to downgrade based on evergreen eel grass, growing surface
Product accounts for the 50% of entire biological stabilization pond area, other submerged plants are selected from hydrilla verticillata, waterweed, hornwort and Malaysia eye
Dish more than one, planted in a manner of interplanting in the center of the biological stabilization pond；The aquatic animal system includes
Zoobenthos and fish, the zoobenthos mainly put Bellamya sp, anodon and freshwater shrimp in a suitable place to breed, and the fish stocking is mainly to filter food
Based on property fish Lian Bighead, it is aided with a small amount of predacious fish and ominivore-fish；1.5 meters of the biological stabilization pond depth of water.
Compared with prior art, the beneficial effects of the utility model are as follows：
The utility model develops a kind of sewage plant tail water artificial wet land treating system, and within the system, sewage passes through successively
Shallow-layer multistage drop canal, artificial combination unit wetland, current wetland, biological stabilization pond are crossed, it is preliminary by shallow-layer multistage drop canal
Precipitation oxygenation realizes that the solid of sewage nitration denitrification and floating vegetation zoobenthos is net into artificial combination unit wetland
Change the total nitrogen and ammonia nitrogen in removal sewage, high molecular polymerization molysite or aluminium salt added in artificial combination unit wetland settling zone,
Reaching phosphor-removing effect, this element floor space is small, can realize potent processing to realization sewage plant tail water total nitrogen, ammonia nitrogen and total phosphorus,
To reduce the load of subsequent artefacts' wetland, greatly save floor occupying area；Sewage after artificial combination unit wetland variation again into
Enter current wetland and passes through the comprehensive of the filtering of the filtrates such as volcanic rock, lime stone and root system of plant, precipitation, absorption and attached microbial
Cooperation BOD, total nitrogen, ammonia nitrogen and the total phosphorus further decreased in sewage, final sewage enter biological stabilization pond, by biological steady
The purification of artificial constructed aquatic ecosystem, realizes the final purification of sewage, water outlet is made to reach surface water environment quality in fixed
IV class standard of standard.
The artificial combination unit wetland of the utility model artificial wet land treating system using sewage plant tail water as supplementary carbon source,
Using haydite and volcanic rock as filler, floor space is small, and has the effect of very strong removal total nitrogen and ammonia nitrogen to the A water outlets of sewage plant level-one
Fruit；Meanwhile the shallow-layer multistage drop canal of front can not only play the effect of preliminary sedimentation, but also be oxygenated by down stream form,
The oxygenation energy consumption of later stage nitration reaction can be reduced；The current wetland at rear portion can in settling zone by adding high molecular polymerization
The phosphorus that the mode of molysite or aluminium salt does not precipitate removal plays the effect of interception, absorption and filtering, internal limestone filler
There is the ability of very efficient purification phosphorus, and its internal another volcanic filling material can further be removed total nitrogen, most
The whole biological stabilization pond residence time can be long.To sum up, the utility model can by artificial constructed aquatic ecosystem
To realize the final purification of sewage.
The utility model, which has, to be reduced artificial swamp floor space, improves artificial wetland treatment efficiency, prevents artificial swamp
The advantages of blocking, especially changes lacking for traditional artificial wetland autumn and winter poor processing effect while reducing floor space
Point realizes the comprehensive decontamination of dirty pollutant in water, makes sewage plant tail water can be in 1 year after the utility model is handled
In whenever and stably reach IV class standard of water environment quality standard throughout the year.
Certainly, any product for implementing the utility model does not necessarily require achieving all the advantages described above at the same time.
Description of the drawings
Fig. 1 is the overlooking structure diagram in the utility model embodiment；
Fig. 2 is the A-A diagrammatic cross-sections in Fig. 1；
Fig. 3 is the B-B diagrammatic cross-sections in Fig. 1；
Fig. 4 is the C-C diagrammatic cross-sections in Fig. 1；
Fig. 5 is the D-D diagrammatic cross-sections in Fig. 1；
In Fig. 1, I-aerobic nitrification area, II- anoxic denitrifications area, III-settling zone；
Label in Fig. 1-4：1- shallow-layer multistages drop canal, 2- artificial combination units wetland, 3- current wetlands, 4- biologies surely
Determine the pool, 5- wetlands water inlet pipe, 6- emergent aquactic plants, the evergreen eel grass of 7- dwarfings, 8- drop gravels dam, the nitrification zones 9- aerobic unit
Laterally partition, 11- fluitantes, 12- aerators, 13- supply supervisor, 14- benthons, the denitrification zones 15- by module, 10-
Oxygen-starved unit module, 16- wetland plants, 17- planting soil layers, 18- geotextile layers, 19- current wetlands water distribution pipeline, 20- fire
Mountain rock packing layer, 21- limestone fillers layer, 22- gravel fillings layer, 23- current wetlands catchment pipeline, 24- current wetlands water inlet
Canal, 25- current wetlands pond, 26- current wetlands braiding channel, 27- emergent aquactic plants, 28- biological stabilization ponds inlet pipeline, the heavy water of 29-
Plant, 30- benthons, 31- fish, 32- wetland effluents pipe, 33- supplementary carbon source devices.
Specific implementation mode
The utility model will be described in detail by specific embodiment below.
Embodiment
Below with reference to Fig. 1 to Fig. 4 to sewage treatment plant tail water artificial wet land treating system provided by the utility model into
The detailed description of row is one optional embodiment of the utility model, it is believed that those skilled in the art is not changing this
Can it be modified and be polished in the range of utility model spirit and content.
It please refers to Fig.1 to Fig. 2, present embodiments provides a kind of sewage treatment plant tail water artificial wet land treating system, at least
Including shallow-layer multistage drop canal 1, artificial combination unit wetland 2, current wetland 3, biological stabilization pond 4, sewage treatment plant tail water according to
It is secondary to pass through shallow-layer multistage drop canal 1, artificial combination unit wetland 2, current wetland 3, biological stabilization pond 4, certainly, in addition to
Except aforementioned four, which is additionally provided with air supply system etc. auxiliary system, belongs to field
Interior conventional means, so do not enumerate and be described in detail herein.Also, the utility model only limits the order that sewage flows through
It is fixed, it arranges as the entity space of shallow-layer multistage drop canal 1, artificial combination unit wetland 2, current wetland 3, biological stabilization pond 4
Order will not necessarily arrange in this order, sequentially be flowed through with this as long as meeting sewage.
It please refers to Fig.1 to Fig. 2, one of the purpose of design of shallow-layer multistage drop canal 1 is to remove the big portion in the sewage that becomes a mandarin
Suspended pollutant and dissolubility pollutant, shallow-layer multistage drop canal 1 is divided to include emergent aquactic plant 6, downgrade evergreen eel grass 7 and gravel
Stone drop dam 8, the depth of water are controlled within 0.6m, can be penetrated to the bottom, be passed through with the reoxygenation and light that ensure entire depth of water range
The oxygen of water surface diffusion input downgrades oxygen that evergreen eel grass photosynthesis generates and down stream aeration allows the dissolving of entire depth of water range
Oxygen concentration is maintained at 1.5mg/l or more.Also, in the case of enough oxygen content, the microorganism energy on evergreen eel grass 7 is downgraded
Majority of organic pollutants in the enough sewage that effectively retains, absorbs and degrade.Meanwhile shallow-layer multistage drop canal 1 improves dirt
Dissolved oxygen in water, additionally it is possible to reduce the oxygen demand of follow-up nitration reaction.
Please refer to Fig.1 to Fig. 3, the artificial combination unit wetland 2 divided into successively along water (flow) direction aerobic nitrification area I,
Anoxic denitrification area II, settling zone III；Wherein, several nitrification zones that are horizontally also intervally arranged in the aerobic nitrification area I are good
Oxygen type unit module 9, be horizontally also intervally arranged in the anoxic denitrification area II several denitrification zone oxygen-starved unit moulds
Block 15；Also, the aerobic nitrification area I further comprises aerator 12, and the utility model passes through several aerators 12
The position arrangement of aeration opening realize the nitration reaction oxygen supply in aerobic nitrification area I, and then distinguish the aerobic nitrification area I, anoxic
Denitrification zone II.The nitrification zone aerobic unit module 9, denitrification zone oxygen-starved unit module 15 further include having filler branch
Frame is respectively equipped on the filler support in the nitrification zone aerobic unit module 9, denitrification zone oxygen-starved unit module 15
The difference denitrogenation filler such as haydite, volcanic rock, the aerator 12 are installed on the described of the nitrification zone aerobic unit module 9
Under filler support.
Specifically, it please refers to Fig.1 to Fig. 3, the aerator 12 in the aerobic nitrification area I is roused by supplying 13 connection of supervisor
Wind turbine is supplied.
Specifically, it please refers to Fig.1 to Fig. 3, the anoxic denitrification area II further includes supplementary carbon source device 33, the benefit
It fills carbon source arrangement 33 and sewage plant raw sewerage raw water, the supplement as the anoxic denitrification area II is connected by pipeline
Carbon source.
It please refers to Fig.1, Fig. 2 and Fig. 5, laterally partition knot is further comprised in the aerobic nitrification area I, anoxic denitrification area II
The lower end of structure 10, the transverse direction partition-type structures 10 is connect with the bottom of pond of the ecological pool, and upper end is slightly above ordinary water level, the transverse direction
Citing of the partition-type structures 10 along direction one end to the opposite bank of the artificial combination unit wetland transverse direction is set as 2.5 meters；The cross
There are three being arranged altogether along water (flow) direction to partition-type structures 10, to extend sewage in the aerobic nitrification area I, anoxic denitrification area II
The interior residence time.Certainly, the setting quantity of the lateral partition-type structures 10 can also be other quantity, by people in the art
Member determines according to actual conditions, does not do restriction and understands herein.
Referring to FIG. 1, being thrown in the settling zone III has high molecular polymerization molysite or aluminium salt.
Referring to FIG. 2, further including floating vegetation 11 and zoobenthos 14, drift on the artificial combination unit wetland 2 is vertical
Floating plant 11 expires cover plant and plants in the water surface of artificial combination unit wetland 2, and main plantation gathers grass and mushroom grass, zoobenthos 14 are put in a suitable place to breed
In III bottom of settling zone of artificial combination unit wetland 2, Bellamya sp and anodon are mainly put in a suitable place to breed.
The artificial combination unit wetland 2 further includes bottom of pond structure, and bottom of pond structure is concrete structure, the nitrification
Area, denitrification zone and settling zone are respectively positioned on the upside of the bottom of pond structure, and the bottom of pond structure is externally provided with peripheral structure, peripheral structure
Using slope, and the gradient is more than 1:2；The peripheral structure tamps structure using clay；The artificial combination unit wetland is effective
2.5 meters of the depth of water, 0.3 meter of superelevation.
The utility model realizes nitrification/denitrification of sewage plant tail water, short distance by the design of artificial combination unit wetland 2
Nitration denitrification removes total nitrogen and nitrate nitrogen in sewage.The present embodiment has studied haydite and volcanic rock as nitration denitrification pond
Filler handles the effect of low concentration wastewater, by being measured to the physicochemical property of haydite and volcanic rock, biofilm experiment, Electronic Speculum observation and
Operation test show two kinds of fillers have large specific surface area, rough surface, porosity are high, biomembrane easily adhere to, biofilm soon,
The excellent performances such as microbe from adhering amount is big, should not be lost in are remarkably improved nitre as the microbe carrier in nitrification/denitrification pond
Change/denitrification efficiency.It is mended simultaneously as the carbon source that anti-nitration reaction can be achieved using sewage plant raw sewerage raw water
It fills, and reduces operating cost.
From vertical upper analysis, the growth of the fluitante on 2 top of artificial combination unit wetland, which can be played, to be absorbed in sewage
The effect of the nutriments such as nitrogen phosphorus, the zoobenthos of bottom can play the role of simplifying sludge.After artificial combination unit wetland 2
The settling zone at end can selectivity add high molecular polymerization molysite or aluminium salt, play the effect of dephosphorization.
The design of this artificial assembled unit wetland is the key that be different from traditional artificial wetland, wet by artificial combination unit
Nitrification, denitrification and the settling zone on ground realize that the intensive treatment of sewage, the removal rate of ammonia nitrogen, total nitrogen and total phosphorus respectively reach
60%, 70% and 30%, total residence time about 3.5 hours, floor space is small, while being greatly reduced subsequent artefacts' wetland
Load, realize the Intensive Design of whole land used, while ensureing the stably reaching standard of autumn and winter sewage disposal.
It please referring to Fig.1, Fig. 2 and Fig. 4, the current wetland 3 is vertical subsurface flow wetland, including current wetland inlet channel 24,
Current wetland pond 25 and current wetland outlet canal 26, further include current wetland water distribution pipeline 19 and current wetland catchments pipeline 23；
Totally 5 layers from top to bottom of the current wetland pond 25, is followed successively by：Planting soil layer 17, geotextile layer 18, limestone layer 20, volcano
Rock packing layer 21 and gravel layer 22；The planting soil layer 17 is provided as the planting matrix of wetland plant 16, the planting soil layer
The wetland plants such as reed, cattail, canna, cyperus alternifolius are planted on 17；The geotextile layer 18 uses 120g/m2Geotextiles, with
Isolation implant soil and filler, but do not influence Root of Wetland Plants and extend downwardly；The current wetland water distributor 19 is by the undercurrent
Wetland inlet channel 24 passes through the current wetland pool wall, is embedded in 21 top of volcanic filling material layer, moisturizing shape is punched using pipeline
Formula water distribution；The current wetland pipeline 23 that catchments is located at gravel layer bottom, is catchmented across current wetland pond by perforated pipe road
Wall enters current wetland braiding channel；The current wetland inlet channel 24 and current wetland braiding channel 26 are respectively arranged at current wetland
25 both sides of pond；The bottom of the current wetland 3 is built using concrete structure, and pool wall uses brickwork construction.
Wherein, grain size of gravel becomes smaller the gravel layer 22 successively from lower to upper, bottom grain size of gravel be 3cm~
5cm, gravel layer top layer grain size of gravel are 1cm~1.5cm, and the height of gravel layer 22 is 40cm；The volcanic filling material layer 21,
Packing material size is 5mm, layer height 40cm；The limestone layer 20, grain size are 3mm~5mm, are highly 50cm；In this implementation
In example, the current wetland water distribution pipeline, the current wetland pipeline that catchments are all made of PVC material.
The current wetland 3 can add settling zone III in high molecular polymerization molysite or the unprecipitated phosphorus of aluminium salt is played and blocked
The effect of filtering is cut, internal limestone filler has the ability of very efficient purification phosphorus, coordinates the suction of 16 root system of wetland plant
It receives, the sorption enhanced of phosphorus may be implemented；And its internal another volcanic filling material can further be removed total nitrogen.Institute
It is 6 hours to state the current wetland design residence time.
Fig. 1 and Fig. 2 are referred to, the biological stabilization pond 4 includes botanical system and aquatic animal system；Botanical system is with heavy
Based on water plant 29, supplemented by emergent aquactic plant 28, for submerged plant 29 to downgrade based on evergreen eel grass, it is steady that cultivated area accounts for entire biology
Determine the 50% of pool surface product, other submerged plants are hydrilla verticillata, waterweed, hornwort and p.malaianus, in a manner of interplanting
It plants in biological stabilization pond center；Aquatic animal system includes zoobenthos 30 and fish 31, and zoobenthos 30 is mainly put
Support Bellamya sp, anodon and freshwater shrimp, fish 31 are put in a suitable place to breed mainly based on filter-feeding fish Lian Bighead, be aided with a small amount of predacious fish and
Ominivore-fish.
The available depth of the biological stabilization pond 4 is 1.5 meters, 0.3-0.5 meters of superelevation；The periphery of the biological stabilization pond 4
Structure uses slope, and the gradient is more than 1:2；The bottom of pond structure and peripheral structure tamp structure using clay.
The biological stabilization pond 4 designs 1 day residence time or more, is formed by water plant and aquatic animal artificial aquatic
The final purification of sewage may be implemented in the ecosystem；Aquatic plant species in it are abundant, take into account emergent aquactic plant, submerged plant,
Floatingleaved plant, evergreen kind accounting are big；Aquatic animal species diversity is strong, scrapes feeding habits and filter-feeding zoobenthos, filter-feeding
Fish, predacious fish, ominivore-fish.The aquatic ecosystem rich biodiversity of structure, food chain length, system are steady
It is fixed.
In conclusion the utility model has the following advantages：
1) design of the shallow-layer multistage drop canal in the system can not only give full play to the net of root system of plant and microorganism
Change acts on, and goes back while improving the dissolved oxygen of water, greatly reduce the energy consumption of later stage nitration reaction；
2) the wet land reinforced nitrification/denitrification of artificial combination unit in the system, using biological photosynthesis and
The mode of down stream aeration saves the big required energy consumption of traditional denitrogenation method aeration quantity；It is untreated using sewage plant simultaneously
Sewage raw water is supplemented as carbon source, reduces processing cost；Artificial combination unit wetland, can be with while saving processing cost
It is realized by way of artificial-strengthening to the long-acting stable processing of ammonia nitrogen, total nitrogen, total phosphorus, reduces wetland floor space, it is ensured that the autumn
The sewage stably reaching standard in winter is entire wet land system core processing unit；
3) current wetland in the system optimizes filler configuration, improves current wetland denitrogenation dephosphorizing efficiency；
4) the biological stabilization pond residence time in the system is longer, and food chain is longer, and system is stablized, it is ensured that sewage is long-term
Stably reaching standard discharges；
5) preferred a variety of evergreen submerged plants in the artificial wet land treating system of the utility model, improve autumn and winter
Treatment effeciency；
6) the intensive wetland land used of the artificial wet land treating system of the utility model, greatly reduces wetland ground
Product, while the entire wet land system residence time is 36.5 hours or so, is also greatly subtracted while ensuring that water stabilization is up to standard
Small wetland land area reduces 50% or more floor space than traditional artificial wetland treatment process.
In addition to this, the utility model realizes the landscape of sewage disposal by the plants configuration of optimization, beautifies the environment；
The artificial wet land treating system anti impulsion load of the utility model, stable water outlet is up to standard, has a good application prospect.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, does not limit the specific implementation mode that the utility model is only described yet.Obviously, according to this theory
The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
The principles of the present invention and practical application are explained, to enable skilled artisan to be best understood by and utilize this
Utility model.The utility model is limited only by the claims and their full scope and equivalents.
Claims (10)
1. a kind of sewage treatment plant tail water artificial wet land treating system, which is characterized in that according to sewage flow direction successively including shallow water
Multistage drop canal, artificial combination unit wetland, current wetland and biological stabilization pond；Wherein,
The shallow water multistage drop canal includes water channel and multistage drop dam；
The artificial combination unit wetland includes aerobic nitrification area, anoxic denitrification area and settling zone；
The current wetland includes inlet channel, microbial reaction area, wetland plant and outlet canal；
The biological stabilization pond is equipped with aquatic plant system and aquatic animal system；
Also,
Evergreen eel grass and emergent aquactic plant are downgraded in plantation in the shallow water multistage drop canal；
The aerobic nitrification area and anoxic denitrification area of the artificial combination unit wetland are also intervally arranged several microorganisms growth bases
Unit, several microorganism growth base units include denitrification zone oxygen-starved unit module and nitrification zone aerobic unit module
Two classes；The artificial combination unit wetland further includes fluitante and zoobenthos, and the fluitante expires cover plant and plants in described
The water surface of artificial combination unit wetland, the zoobenthos are put in a suitable place to breed in the bottom of the settling zone of the artificial combination unit wetland
Portion；
The flow of the current wetland is flow vertically downward, and the microbial reaction area of the current wetland is grain size from top to bottom
Planting soil, lime stone, volcanic rock and gravel from small to large；
The aquatic plant system of the biological stabilization pond is divided into emergent aquactic plant and submerged plant, and the submerged plant includes downgrading often
Green eel grass, hydrilla verticillata, waterweed, hornwort and p.malaianus more than one, the aquatic animal of the biological stabilization pond
System includes scraping feeding habits zoobenthos and/or filter-feeding fish.
2. sewage treatment plant tail water artificial wet land treating system as described in claim 1, which is characterized in that the shallow water is multistage
Drop canal is divided into two-stage drop, and drop, every grade of drop height difference 30cm are realized by the gravel dam that drops；The drop water in a canal depth 60cm
Hereinafter, evergreen eel grass is downgraded in main plantation, plantation emergent aquactic plant is interspersed on bank；The shallow water multistage drop canal is tied using Tu Chi
Structure.
3. sewage treatment plant tail water artificial wet land treating system as described in claim 1, which is characterized in that the aerobic nitrification
Horizontally also be intervally arranged several nitrification zone aerobic unit modules in area, between horizontally being gone back in the anoxic denitrification area
Every several denitrification zone oxygen-starved unit modules of arranging, the nitrification zone aerobic unit module, the denitrification zone oxygen-starved
Unit module further includes having filler support, the nitrification zone aerobic unit module and the denitrification zone oxygen-starved unit mould
Different types of denitrogenation filler is respectively equipped on the filler support in the block, aerator is installed on the nitrification zone aerobic
Under the filler support of unit module.
4. sewage treatment plant tail water artificial wet land treating system as described in claim 1, which is characterized in that the aerobic nitrification
Aerator is equipped in area, the aerobic nitrification area is additionally provided with air inlet supervisor, and the air inlet supervisor connect with the aerator,
The air inlet supervisor connection air blower is supplied；The anoxic denitrification area further includes supplementary carbon source device, the supplement carbon
Source device connects sewage plant raw sewerage raw water, the supplementary carbon source as the anoxic denitrification area by pipeline.
5. sewage treatment plant tail water artificial wet land treating system as described in claim 1, which is characterized in that the artificial combination
Unit wetland further includes bottom of pond structure, and the aerobic nitrification area, anoxic denitrification area and the settling zone are respectively positioned on the bottom of pond
On the upside of structure, bottom of pond structure periphery is equipped with peripheral structure；2.5 meters of the artificial combination unit depth of water.
6. sewage treatment plant tail water artificial wet land treating system as described in claim 1, which is characterized in that the aerobic nitrification
Lateral partition-type structures, the lower end of the transverse direction partition-type structures and the artificial combination are additionally provided in area, the anoxic denitrification area
The bottom of pond of unit wetland connects, and upper end is slightly above ordinary water level, and the length of the transverse direction partition-type structures is entire lateral length
75%；The transverse direction partition-type structures are divided into multigroup, residence time of the extension sewage in the nitration denitrification area；The precipitation
Being thrown in area has high molecular polymerization molysite or aluminium salt.
7. sewage treatment plant tail water artificial wet land treating system as described in claim 1, which is characterized in that the artificial combination
Unit wetland further includes floating vegetation and zoobenthos, and the fluitante expires cover plant and plants in the artificial combination unit wetland table
Face, the mainly poly- grass of the fluitante and mushroom grass, the zoobenthos are put in a suitable place to breed in the institute of the artificial combination unit wetland
The bottom of settling zone is stated, the zoobenthos is mainly Bellamya sp and anodon.
8. sewage treatment plant tail water artificial wet land treating system as described in claim 1, which is characterized in that the current wetland
Further include water distribution pipe road and water outlet collector pipe for vertical subsurface flow wetland, including inlet channel, microbial reaction area and outlet canal
Road, the water distribution pipe road, the water outlet pipeline that catchments are all made of PVC material；The microbial reaction area from top to bottom totally 5
Layer, is followed successively by：Planting soil layer, geotextile layer, limestone layer, volcanic filling material layer and gravel layer；The planting soil layer setting is made
For wetland plant planting matrix, one or more wetland plants are planted thereon；The geotextile layer uses 120g/m2Geotextiles；
The water distribution pipe route the inlet channel across the current wetland pool wall and is embedded in the top of the volcanic filling material layer
Portion, and moisturizing form water distribution is punched using pipeline, the water distribution pipe road passes through pool wall；The water outlet pipeline that catchments is located at
The bottom of the gravel layer and multiple holes are equipped with, are catchmented by the water outlet of the punching pipeline that catchments and pass through wetland pond
Wall enters braiding channel；The inlet channel and outlet canal are respectively arranged at wetland both sides；The bottom of pond of the current wetland uses coagulation
Soil structure is built, and pool wall uses brickwork construction；Kind is implanted with wetland plant in the planting soil layer.
9. sewage treatment plant tail water artificial wet land treating system as claimed in claim 8, which is characterized in that the gravel layer
Grain size of gravel becomes smaller successively from lower to upper, and bottom grain size of gravel is 3cm ~ 5cm, and top layer's grain size of gravel is 1cm ~ 1.5cm, institute
It is 40cm to state gravel layer height；The volcano rock stratum, grain size 5mm are highly 50cm；The limestone layer grain size be 3mm ~
5mm is highly 40cm.
10. sewage treatment plant tail water artificial wet land treating system as claimed in claim 8, which is characterized in that the biology is steady
It includes aquatic plant system and aquatic animal system to determine the pool；The aquatic plant system is based on submerged plant, emergent aquactic plant is
Auxiliary, the submerged plant accounts for 80% or more, and to downgrade based on evergreen eel grass, cultivated area accounts for entire biological stabilization pond area
50%, other submerged plants are selected from more than one of hydrilla verticillata, waterweed, hornwort and p.malaianus, in a manner of interplanting
It plants in the center of the biological stabilization pond；The aquatic animal system includes zoobenthos and fish, and the bottom is dwelt
Object mainly puts Bellamya sp, anodon and freshwater shrimp in a suitable place to breed, and the fish stocking mainly based on filter-feeding fish silver carp Bighead, is aided with a small amount of meat
Feeding fish and ominivore-fish；1.5 meters of the biological stabilization pond depth of water.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626575A (en) * | 2019-01-30 | 2019-04-16 | 中国海洋大学 | A kind of low-consumption high-speed service area saprobia-artificial swamp composite handling arrangement |
| CN113620540A (en) * | 2021-09-06 | 2021-11-09 | 深圳市万科物业服务有限公司 | Sewage treatment plant tail water treatment circulation system |
-
2017
- 2017-11-22 CN CN201721576570.0U patent/CN207726821U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626575A (en) * | 2019-01-30 | 2019-04-16 | 中国海洋大学 | A kind of low-consumption high-speed service area saprobia-artificial swamp composite handling arrangement |
| CN113620540A (en) * | 2021-09-06 | 2021-11-09 | 深圳市万科物业服务有限公司 | Sewage treatment plant tail water treatment circulation system |
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