CN206232574U - A kind of combined artificial wetland process system for denitrogenation dephosphorizing - Google Patents

A kind of combined artificial wetland process system for denitrogenation dephosphorizing Download PDF

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Publication number
CN206232574U
CN206232574U CN201621312231.7U CN201621312231U CN206232574U CN 206232574 U CN206232574 U CN 206232574U CN 201621312231 U CN201621312231 U CN 201621312231U CN 206232574 U CN206232574 U CN 206232574U
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China
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artificial
wetland
combined
unit
swamp
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CN201621312231.7U
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危建新
王文明
尹振文
左锋
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Hunan Forerunner Lake Reclaimed Water Co Ltd
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Hunan Forerunner Lake Reclaimed Water Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The utility model discloses a kind of combined artificial wetland process system for denitrogenation dephosphorizing, including water inlet pipe, outlet pipe and the multistage composite artificial swamp being serially connected between water inlet pipe and outlet pipe;Include the aerobe pool positioned at upstream and the artificial swamp positioned at downstream per one-level combined artificial wetland, each artificial swamp includes several artificial swamp units;It is parallel with one another between each artificial wetland unit in the artificial swamp of first order combined artificial wetland, and it is vertical subsurface flow wetland unit;In the artificial swamp of other combined artificial wetlands at different levels in addition to first order combined artificial wetland, artificial swamp includes the group of some artificial swamp unit compositions being serially connected, parallel with one another between each group;Artificial swamp unit in each group both includes horizontal drowned flow artificial wet land unit, and including surface current artificial wetland's unit.The combined artificial wetland process system has efficient denitrogenation dephosphorizing function, can be obviously improved water quality.

Description

A kind of combined artificial wetland process system for denitrogenation dephosphorizing
Technical field
The utility model is related to a kind of combined artificial wetland process system for denitrogenation dephosphorizing, belongs to artificial swamp sewage Processing system.
Background technology
Artificial marsh sewage treatment system is a kind of Novel sewage treatment technology for growing up the eighties in 20th century, with biography The sewage second-level biochemical process of system is compared, and artificial swamp has that purifying water effect is good, process equipment simple, to load variations adaptability By force, engineering capital construction and operating cost are low, ecological environment benefit is notable and can realize waste water reclaiming, be adapted to dispersion or non-point source is dirty The features such as water process, controlled in town domestic sewage treatment, the preventing and treating of town domestic sewage advanced treating, lake pollution, micro- sewage body The aspects such as reason are increasingly widely applied.
Current China's artificial swamp sewage treatment project generally uses single Wetland Type.A large amount of engineering practices show, Free water surface wetland floor space is big, hydraulic load is small, dirt-removing power is not so good as current wetland;Horizontal subsurface flow wetland control is relatively multiple Miscellaneous, Nitrogen/Phosphorus Removal is not so good as vertical subsurface flow wetland;And vertical subsurface flow wetland is not so good as horizontal drowned flow to the removal effect of organic matter Wetland.Compound type constructed wetland system has had the advantage of three types wetland concurrently compared with the artificial swamp of single type, has Composite wastewater treatment effect higher.Therefore, the optimum organization of artificial swamp type is the key that its application must be solved Technical barrier.
China is honest at present pushes into cities and towns construction of wastewater treatment plant and its carries mark retrofit work, efficient compound Manual moist Ground has certain application prospect in terms of urban wastewater treatment firm advanced treatment of wastewater.At the same time, China is also in one Individual unprecedented quickly new urbanization epoch and Ecological Civilization Construction key period, efficient landscape-type composite artificial wetland is in sponge city City(Or city)Construction in also have broad application prospects.
Utility model content
The technical problem that the utility model is solved is that artificial wetland process type of the prior art is single, combined artificial Wetland Nitrogen/Phosphorus Removal is bad, and the design of combined artificial wetland is unreasonable, there is provided a kind of combined artificial of high-efficient denitrification and dephosphorization Wet land technique system, solving that current artificial swamp landscape effect is poor, integrated treatment efficiency is low and effluent quality is unstable etc. asks Topic, especially realize by《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002)One-level B standard tailwater depth Degree is purified to one-level emission standard A.
The technical solution of the utility model is to provide a kind of combined artificial wetland process system for denitrogenation dephosphorizing, bag Include water inlet pipe, outlet pipe and the multistage composite artificial swamp being serially connected between water inlet pipe and outlet pipe;By current side To, including the aerobe pool positioned at upstream and the artificial swamp positioned at downstream per one-level combined artificial wetland, each is artificial Wetland includes several artificial swamp units;Multiple downflow weirs are set in the aerobe pool.
Wherein, it is parallel with one another between each artificial wetland unit in the artificial swamp of first order combined artificial wetland, and It is vertical subsurface flow wetland unit;
In the artificial swamp of other combined artificial wetlands at different levels wherein, in addition to first order combined artificial wetland, manually Wetland includes the group of some artificial swamp unit compositions being serially connected, parallel with one another between each group;Each is small Artificial swamp unit in group both includes horizontal drowned flow artificial wet land unit, and including surface current artificial wetland's unit.
In the utility model, by water (flow) direction, combined artificial wetlands at different levels are respectively designated as the first order, the second level, The combined artificial wetlands such as three-level;Correspondingly, the correspondence one-level aerobe pool and the artificial swamp per one-level combined artificial wetland, i.e., the One-level combined artificial wetland includes the first order aerobe pool and first order artificial swamp positioned at upstream.
Preferably, the multistage composite artificial swamp is three-level.
Preferably, sterilization canal is set between the combined artificial wetland and outlet pipe.
Preferably, it is water near the artificial swamp unit of sterilization canal in the artificial swamp of afterbody combined artificial wetland Flat drowned flow artificial wet land unit.
Preferably, planted in the artificial swamp of every one-level combined artificial wetland and be implanted with water plant.
Preferably, the water plant is canna, reed, cattail, yellow flag, calamus, thaliadeabata, Lythrum salicaria, wick Grass, wild rice stem, cyperus alternifolius, vetiver, mullet grass in one or more.
The perisporium of the bottom on the aerobe pool and artificial swamp at different levels, bottom are equipped with impervious barrier, and it is anti-that perisporium is laid Infiltration layer is the film geomembrane anti-seepage layer of two cloth one, and the impervious barrier of bottom laying is by the geomembrane of the film of two cloth one and positioned at antiseepage film The coarse sand protective layer composition of upper and lower.
The fillers such as rubble, cobble that particle diameter is 20-50mm are provided with artificial swamp unit, near outlet canal about 5-15m's In the range of artificial swamp unit be provided with particle diameter be 4-6mm crushed rock filler filtering area.
The aerobe pool is provided with heavy water, endures water, swims and floatingleaved plant, and submerged plant is eel grass, watermifoil etc. Combination, emergent aquactic plant is the combination of mushroom grass, cattail, reed, wild rice stem, lotus etc., and floating plant is the group of Eichhornia crassipes, duckweed etc. Close, floatingleaved plant is the combination of water lily, bog pondweed etc..
Water plant is canna, reed, cattail, yellow flag, Chang in the artificial swamp unit of the artificial swamp at different levels Pu, thaliadeabata, Lythrum salicaria, rush, wild rice stem, cyperus alternifolius, vetiver, mullet grass etc. one or more.
The artificial swamp distributing channel at different levels is concrete structure open channel or closed conduit, the water in distributing channel by pipeline to Artificial swamp water distribution, pipeline is provided with water distribution operation valve.
The artificial wetland effluent pipeline at different levels is water level adjustable Discharging bent-tube, and Discharging bent-tube is located in braiding channel, Braiding channel is concrete structure open channel or closed conduit.
The artificial swamp at different levels is equipped with evacuated tube, emptying tube hub absolute altitude and artificial swamp bottom surface distance about 150- 200mm, evacuated tube is provided with emptying operation valve, and all evacuated tubes are connected with emptying main, every certain on emptying main Distance is provided with emptying inspection shaft.
Compared with prior art, the beneficial effects of the utility model are:The utility model is dived by the aerobe pool, vertically Stream wetland, free water surface wetland and horizontal subsurface flow wetland carry out rational optimum organization, realize wastewater efficient purification and cities and towns life State landscape construction dual-use function.
Suspension in micropollutant water or urban wastewater treatment firm one-level B standard tail water is in the first order aerobe pool Sedimentation and structure phytobiocoenose system to effective interception of suspension filtering, reduce artificial into first order vertical subsurface flow Suspension content in wetland unit, the risk blocked so as to greatly reduce vertical subsurface flow wetland to occur.
The effluent weir drop of the oxygen-enriched function on the aerobe pools at different levels and its uniqueness is oxygen-enriched-i.e. downflow weir, it is ensured that it is at different levels Artificial swamp unit run for many years after be not in complete anaerobism situation, realizing artificial swamp units at different levels can be with long-acting steady Fixed operation, so as to play the environmental infrastructure function as sewage purification and landscaping.
The aerobe pools at different levels under aerobic condition, using water plant, animal, microorganism group into the ecosystem it is many Act synergistically suspension, organic matter and the ammonia nitrogen removed in water body again, while absorbed using water plant to go to denitrogenate phosphorus.
Surface current artificial wetland mainly forms aerobic environment condition by surface current and shallow-layer filler, in the work of microorganism With the lower organic matter and ammonia nitrogen removed by aerobic degradation in water body, while absorbed using water plant to go to denitrogenate phosphorus.
Vertical subsurface flow wetland unit in water body from top to bottom(Or from bottom to top)In flow event, and horizontal drowned flow Artificial swamp unit water body gravity flow plug-flow water distribution during, water body after aerobic, anoxic and anaerobic environment packing area, aquatic Under plant, microorganism, the collaboration of filler, the removal and denitrogenation of organic matter are realized by physics, chemistry, biological multiple synergy Phosphorus removal functional, while absorbed using water plant to go to denitrogenate phosphorus.
Multi-stage aerobic biological pond and artificial swamp and surface current artificial wetland and horizontal drowned flow artificial wet land have unit Close, construct the aerobic of multi-stage alternate change, anoxic and anaerobic environment condition portion, recycle the aquatic plant in varying environment area The multiple synergy of thing, microorganism and filler, realizes that multistage suspension thing filtering sedimentation, organic matter degradation, nitrification/denitrification take off The processes such as absorption, release and the absorption of nitrogen and phosphorus, especially enhance Nitrogen/Phosphorus Removal.
In afterbody artificial wet land system, filling 4-6mm small particles are broken in the distance sterilization nearest artificial swamp unit of canal Hardcore, as crushed rock filler filtering area, may further ensure that out that the key index such as aqueous suspension and nitrogen phosphorus is up to standard.
Urban wastewater treatment firm one is carried out using the combined artificial wetland process system of the utility model high-efficient denitrification and dephosphorization Level B standard Tailwater Depth treatment, long term monitoring result shows:In the case of the not carbon source such as extraneous acetic acid sodium, the combined artificial Wet land system is to total nitrogen in one-level B standard tail water(TN)Clearance reach 20%-40%, total phosphorus(TP)Clearance reach 30%- 50%.In a word, the utility model can economic, stabilization, effectively urban wastewater treatment firm one-level B standard deep purification of tail water arrived One-level emission standard A, had both overcome the single shortcoming of wet land technique type, had improved conventional composite wet land technique deamination phosphorus removing effect The low problem of rate, urban wastewater treatment firm ecoscape is enhanced, only Treatment of Industrial Water technology is breached again could be used as city Town sewage treatment plant tail water puies forward the technical bottleneck of mark transformation.
Brief description of the drawings
Fig. 1 represents the three-level composite constructed wetland system that embodiment 1 is provided.Wherein:11 represent water inlet pipe, and 22 represent sterilization Canal, 33 represent outlet pipe, and T represents the aerobe pool, and T-1 is the first order aerobe pool, and T-2 is the second level aerobe pool, T-3 is the third level aerobe pool;I represents first order artificial swamp, and II represents second level artificial swamp, and III represents the third level Artificial swamp;Correspondingly, I-1, I-2, I-3, I-4 represent four artificial wetland units in first order artificial swamp;II-1、II - 2, II-3, II-4 represent four artificial wetland units in the artificial swamp of the second level;III-1, III-2, III-3, III-4 table Show four artificial wetland units in third level artificial swamp.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of high-efficient denitrification and dephosphorization three-level combined artificial wetland process system of the utility model, by current side To the water inlet pipe 11 including being sequentially connected, three-level combined artificial wetland, sterilization canal 22, outlet pipe 33, three-level combined artificial wetland (Or three-level subsystem)From the low arrangement of height, three-level subsystem includes the aerobe pool and artificial swamp.The aerobe pool Bottom and artificial swamp perisporium, bottom are equipped with impervious barrier, and the impervious barrier of perisporium laying is the film geomembrane anti-seepage layer of two cloth one, The impervious barrier of bottom laying is constituted by the film geomembrane of two cloth one and positioned at the coarse sand protective layer of antiseepage film upper and lower.Sewage (Or urban wastewater treatment firm one-level B standard tail water)Initially enter the first order aerobe pool(T-1)[can below the aerobe pool Abbreviation biological pond], collect the water outlet of first order biological pond and using distributing pipe line to first order vertical subsurface flow using two distributing channels Artificial swamp(I-1, I-1, I-2, I-3 and I-4)Water distribution, first order vertical subsurface flow wetland is collected using braiding channel(I) Water outlet enters second level biological pond(T-2), second level biological pond is collected using distributing channel(T-2)Water outlet simultaneously utilizes distributing pipe line pair Second level horizontal drowned flow artificial wet land(II-1、II-2)Water distribution, second level horizontal drowned flow artificial wet land is collected using braiding channel (II-1、II-2)Water outlet and to second level surface current artificial wetland(II-3、II-4)Water distribution, second level table is collected using braiding channel Surface current artificial swamp(II-3、II-4)Water outlet enters third level biological pond(T-3), third level biological pond is collected using distributing channel (T-3)Water outlet simultaneously utilizes distributing pipe line to third level surface current artificial wetland(III-1、III-2)Water distribution, is collected using braiding channel Third level surface current artificial wetland(III-1、III-2)Water outlet and to third level horizontal drowned flow artificial wet land(III-3、III-4) Water distribution, last three-level horizontal drowned flow artificial wet land(III-3、III-4)Water outlet is pooled to ultraviolet disinfection canal and is disappeared through braiding channel Poison treatment, is wherein all provided with several downflow weirs in biological pond.
Using manually building aerobic biological pond or the natural biological pool suitably being repaired, built in the aerobe pool shallow Pool, transition region and the region of profundal zone three.First order biological pond volume 3850m3, both sides phytal zone beam overall 7m, the depth of water≤ 0.4m, both sides transition region beam overalls 6m, the depth of water 0.4-1.6m, middle profundal zone 2-8m wide, depth of water 1.6-2m.Second level biological pond holds Product 1750m3, both sides phytal zone beam overall 2m, the depth of water≤0.3m, both sides transition region beam overalls 3m, depth of water 0.3-1.2m, middle profundal zone 2-8m wide, depth of water 1.2-1.5m.Third level biological pond volume 3200m3, both sides phytal zone beam overall 7m, the depth of water≤0.4m, both sides mistake Cross area beam overall 6m, the depth of water 0.4-1.6m, middle profundal zone 2-10m wide, depth of water 1.6-2.0m.It is configured with heavy in the aerobe pool Water, very water, swim and floatingleaved plant.
Using the rectangle like pond body of brick mix structure, the length and width size of first order artificial swamp pond body is each about(68-81)m ×(43-57)M, area is each about 3300m2, ballast grain sizes about 20-50mm, depth be about 1.2m, and rubble bed volume is about 4000m3.The length and width size of second level artificial swamp pond body is each about(94-98)m×(44-57)M, area is each about 4250m2, Ballast grain sizes about 30-40mm, second level horizontal drowned flow artificial wet land rubble depth is about 1.0m, rubble bed volume and is about 4250m3, second level free water surface wetland rubble depth about 0.6m, rubble bed volume are about 2600 m3.The first order, the second level are artificial Each pond body of wetland is approximately equidistantly being divided into 4 small wetland lists on length direction with 200mm thickness brick mix structure walls Unit.The length and width size of third level artificial swamp pond body is each about(68-86)m×(52-56)M, area is each about 4000m2, rubble Particle diameter about 40-50mm, third level free water surface wetland rubble depth about 0.6m, rubble bed volume are about 2500 m3, three-level level dive Stream wetland rubble depth is about 1.0m, rubble bed volume about 4000m3.Each pond body of third level artificial swamp is perpendicular to width On direction 3 small wetland units are approximately equidistantly divided into 200mm thickness brick mix structure walls.
The film geomembrane anti-seepage layer of two cloth one is laid in perisporium, the bottom of the aerobe pool at different levels bottom and artificial swamp.It is good Oxygen biological pond kind is implanted with the emergent aquactic plants, water lily, eye such as the submerged plants such as eel grass, watermifoil, mushroom grass, cattail, reed, wild rice stem The floatingleaved plants such as dish.One-level artificial swamp kind is implanted with the plants such as yellow flag, cattail, reed, canna, vetiver, and two grades artificial Wetland kind is implanted with the plants such as yellow flag, cattail, cyperus alternifolius, canna, rush, wild rice stem, and three-stage constructed wetland kind is implanted with power again The plants such as flower, reed, calamus, Lythrum salicaria, canna, mullet grass, wherein vertical subsurface flow wetland planting density are not less than 9 Strain/m2, free water surface wetland and horizontal subsurface flow wetland planting density are not less than 6 plants/m2
Central China city sewage treatment plant one-level B standard tail water is accessed into the three-level composite type artificial wetland technique system In system, after the wetland plant growth, domestication and biological Membrance cuiture by 3-6 month, advanced treatment of wastewater is carried out.By 4 years Many stable operation, in the recent period the water monitoring data to the three-level composite constructed wetland system Inlet and outlet water be:Influent quality is about COD 26.5mg/L, SS 16mg/L, TN 17.8mg/L, TP 0.7mg/L, effluent quality are about COD 15.9mg/L, SS 6mg/L、TN 12.5mg/L、TP 0.43mg/L。

Claims (6)

1. a kind of combined artificial wetland process system for denitrogenation dephosphorizing, it is characterised in that including water inlet pipe, outlet pipe and position The multistage composite artificial swamp being serially connected between water inlet pipe and outlet pipe;It is wet per one-level combined artificial by water (flow) direction Ground includes the aerobe pool positioned at upstream and the artificial swamp positioned at downstream, and each artificial swamp includes several Manual moists Ground unit;Multiple downflow weirs are set in the aerobe pool;
Wherein, it is parallel with one another between each artificial wetland unit in the artificial swamp of first order combined artificial wetland, and be vertical Straight drowned flow artificial wet land unit;
In the artificial swamp of other combined artificial wetlands at different levels wherein, in addition to first order combined artificial wetland, artificial swamp Group including some artificial swamp unit compositions being serially connected, it is parallel with one another between each group;In each group Artificial swamp unit both include horizontal drowned flow artificial wet land unit, and including surface current artificial wetland's unit.
2. combined artificial wetland process system as claimed in claim 1, it is characterised in that the multistage composite artificial swamp is Three-level.
3. combined artificial wetland process system as claimed in claim 1, it is characterised in that the combined artificial wetland and water outlet Sterilization canal is set between pipe.
4. combined artificial wetland process system as claimed in claim 1, it is characterised in that afterbody combined artificial wetland It is horizontal drowned flow artificial wet land unit near the artificial swamp unit of sterilization canal in artificial swamp.
5. combined artificial wetland process system as claimed in claim 1, it is characterised in that per the people of one-level combined artificial wetland Planted in work wetland and be implanted with water plant.
6. combined artificial wetland process system as claimed in claim 5, it is characterised in that the water plant be canna, One kind in reed, cattail, yellow flag, calamus, thaliadeabata, Lythrum salicaria, rush, wild rice stem, cyperus alternifolius, vetiver, mullet grass Or it is two or more.
CN201621312231.7U 2016-12-02 2016-12-02 A kind of combined artificial wetland process system for denitrogenation dephosphorizing Active CN206232574U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106495407A (en) * 2016-12-02 2017-03-15 湖南先导洋湖再生水有限公司 A kind of combined artificial wetland process system for denitrogenation dephosphorizing
CN108439734A (en) * 2018-06-12 2018-08-24 沈阳建筑大学 A kind of strengthened denitrification artificial wet land system distributed rationally based on plant
CN109592791A (en) * 2019-02-21 2019-04-09 中国环境科学研究院 A kind of composite constructed wetland system and its operation method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106495407A (en) * 2016-12-02 2017-03-15 湖南先导洋湖再生水有限公司 A kind of combined artificial wetland process system for denitrogenation dephosphorizing
CN108439734A (en) * 2018-06-12 2018-08-24 沈阳建筑大学 A kind of strengthened denitrification artificial wet land system distributed rationally based on plant
CN108439734B (en) * 2018-06-12 2021-06-04 河南景尚环保科技有限公司 Enhanced denitrification constructed wetland system based on plant optimization configuration
CN109592791A (en) * 2019-02-21 2019-04-09 中国环境科学研究院 A kind of composite constructed wetland system and its operation method

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