CN101774696B - Application of pilea cadierei in treating livestock and poultry breeding wastewater - Google Patents

Application of pilea cadierei in treating livestock and poultry breeding wastewater Download PDF

Info

Publication number
CN101774696B
CN101774696B CN2010101226223A CN201010122622A CN101774696B CN 101774696 B CN101774696 B CN 101774696B CN 2010101226223 A CN2010101226223 A CN 2010101226223A CN 201010122622 A CN201010122622 A CN 201010122622A CN 101774696 B CN101774696 B CN 101774696B
Authority
CN
China
Prior art keywords
breeding wastewater
wastewater
livestock
pilea cadierei
pilea
Prior art date
Application number
CN2010101226223A
Other languages
Chinese (zh)
Other versions
CN101774696A (en
Inventor
邓仕槐
阳路芳
袁野
李远伟
杨刚
孙百晔
张小洪
张延宗
王应军
肖鸿
李黎
彭宏
Original Assignee
四川农业大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 四川农业大学 filed Critical 四川农业大学
Priority to CN2010101226223A priority Critical patent/CN101774696B/en
Publication of CN101774696A publication Critical patent/CN101774696A/en
Application granted granted Critical
Publication of CN101774696B publication Critical patent/CN101774696B/en

Links

Classifications

    • 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 discloses application of pilea cadierei in treating livestock and poultry breeding wastewater, belonging to wastewater treatment filed. In the invention, the characteristics that of pilea cadierei has cold resistance, does not fall leaves or wither in winter and can absorb and remove ammonia nitrogen, total nitrogen and other pollutants in livestock and poultry breeding wastewater is utilized, and the pilea cadierei is directly transplanted or inserted by cuttage in the environment of livestock and poultry breeding wastewater to absorb the pollutants of accumulated wastewater so as to purify the livestock and poultry breeding wastewater. The invention solves the problem that most of plants for purifying wastewater have poor purification effects in winter currently and also provides new types of plant resources for the treatment of livestock and poultry breeding wastewater pollution, brings new improvement and development space for the treatment of livestock and poultry breeding wastewater pollution by artificial wetland plants, and achieves obvious advantages in operation cost, operation maintenance, treatment effect, as well as brought economical benefits in landscape, environmental protection and medical application, compared with traditional plants for purifying wastewater.

Description

The application of pilea cadierei in processing livestock breeding wastewater
Technical field
The present invention relates to the natural biology degradation technique field of livestock breeding wastewater, the particularly application of a kind of constructed wetland plant in processing livestock breeding wastewater.
Background technology
Livestock breeding wastewater pollutes and has chronicity and non-reversibility, and its features of pollution is high suspended matter, high organism and high ammonia nitrogen, and biodegradability is strong, and stink is large.
Poultry industry is the important component part of China's agricultural and rural economy, it is also the one of the main reasons that causes China's Rural Plane Source Pollution, it is day by day serious that livestock and poultry breeding industry is greatly developed brought problem of environmental pollution, not only affect Economic development, but also jeopardize ecological safety, become the social concern of people's common concern.The severe contamination that the ight soil that livestock and poultry farm produces and sewage cause surface water, underground water, soil and ambient air, directly affected people's healthy and normal productive life.The method of processing at present the livestock breeding wastewater pollution mainly contains natural biology degradation technique (as soil treatment, oxidation pond processing, artificial swamp processing etc.), Anaerobic Methods in Treating (as anaerobic filter, up-flow anaerobic sludge blanket, upflow solids reactor etc.), aerobic treatment technology (as biological filter, blodisc, sequencing batch active sludge, A/O technique and oxidation ditch etc.) etc.These methods all have certain characteristics, and can reduce to a certain extent the pollution level of livestock breeding wastewater.Yet, adopting anaerobism or aerobic biologic treating technique, its effluent quality is difficult to reach corresponding emission standard, lets alone sewage comprehensive discharge primary standard, if adopt compulsory physical chemistry measure intensifying treatment effect, often high cost.The characteristics of natural biology degradation technique (artificial swamp processing) can make up the limitation that the aquaculture economic capability is limited, lack the technician that certain operation and level of management are arranged just, especially are applicable to being located in the plant of Rural areas.Adopt the treatment effect of natural biology degradation technique (artificial swamp processing) strengthening livestock breeding wastewater pollution treatment system, a kind of suitable treatment technology of can yet be regarded as.
Beginning of the nineties late 1980s, in succession held the Wastewater Treatment by Constructed Wetlands conference in the U.S., Britain, proposed the relevant purification mechanism of artificial swamp and design specifications and the data that some can be for reference, indicated that artificial swamp is as a kind of Sewage treatment systems entered environment scientific domain shown unique characteristics.In recent years, the researchs such as the application of the engineering of artificial swamp and purification mechanism more and more are subject to people's attention.Artificial swamp can not only effectively be removed suspended substance, organic pollutant, nitrogen and the phosphorus etc. in sewage, and can effectively remove the exogenous bioactive substances such as pathogenic bacteria, heavy metal, algae toxin, there is construction cost low, power consumption is few, working cost is low and effective and do not cause the multifrequency nature such as secondary pollution, higher nitrogen, tp removal rate are not only arranged, also there is the effect of beautifying the environment.Along with polluting, water becomes one of the most serious environmental problem that whole world people will face, artificial swamp has obtained long term growth because of its unique advantage, especially shown great potentiality in purifying the livestock breeding wastewater pollution, become and start in recent years the study hotspot of paying close attention to.The plant polluted for the treatment of livestock breeding wastewater at present has cyperus alternifolius (Cyperus alternifolius), chrysanthemum Canna generalis Bailey (Cannaceaeindica var.flava), wilson iris Irispseudoacorus), calamus (Acorus calamus Linn), wild rice stem (Zizania latifolia), reed (Phragmites australis) etc.
But, face at present because livestock and poultry cultivation is greatly developed the day by day serious problem of livestock breeding wastewater pollution of bringing, above-mentionedly can be used for processing the plant variety resource that livestock breeding wastewater pollutes and seem very limited, be difficult to meet actual needs, still await further reasonable development and can be used in a large number processing the plant variety resource that livestock breeding wastewater pollutes, to adapt to the needs of the wastewater treatments such as different areas, different quality soil property.In addition, most is annual herb for the plant of purifying waste water, winter hardiness is poor, winter is withered, this has not only affected the decontamination effect improving of winter to livestock breeding wastewater, and dry branches and fallen leaves enters in water, can bring secondary pollution to water body, thereby cause undesirable to the decontamination effect improving of livestock breeding wastewater in the winter time.
Pilea cadierei (Pilea cadierei Gagnep.etGuill), another name root of Henry saruma, hundred spot Malus spectabilis, Urticaceae (Urticaceae) Pilea (Pilea).Originate in the Central Vietnam mountain area, in greenhouse, cultivation is all arranged all over the world at present.Plant height 30-60cm, terrestrial stem grows thickly, thin and delicate meat, translucent, the above has rib, and joint section expands, and young stem is green in vain, and old stem is filbert.Leaf is to life, and ellipticity is avette, the blunt point of tip, the wide wedge shape of base portion, long 3-5cm, wide 2.5-4cm.Article 3, master pulse and tip 4-6 bar lateral vein are all apparent in view, and the vein part is slightly recessed, dark green, and greyish white extremely argenteous speckle is arranged between 3 master pulses, and speckle part projection is like the crab shelly.Leaf margin has wavy cognate.Petiole is short, translucent, and base portion has stipellum.Cyme, top give birth to or between axil pumping, peduncle is filbert, translucent.More cold-resistant, winter temperature is not less than 6 ℃ and can not endures cold, and starts growth more than 14 ℃.The weather condition of happiness warm and moist, be afraid of exposure in sunshine, and green clearly demarcated at thin shady environment inferior lobe look white, internode is short and compact, and blade face is bright and glossy.All covering usually excessive growth under shady environment, internode is elongated, thatch stalk softness, and easily lodging, strain shape is loose.Not tight to the soil requirement, ability weak base is wet than double-fermented wine water, not drought-enduring.
At present, pilea cadierei mainly as viewing and admiring, decorative plant, aspect indoor beautifying application more, be the small-sized foliage plants of quite prevailing, due to its strong adaptability, anti-pruning, easily breeding, than being easier to plantation, the strain clump is small and exquisite plain, and the leaf look green is white clearly demarcated, the grain pattern beauty; Display in study, bedroom, elegant pleasant; Before also can being suspended to window, greenery hang down, charming lovely; To belong to various plants together similar, pilea cadierei also can be used as the plant of indoor absorption toxic substance.In order to allow pilea cadierei keep the strain shape of round and mellow compactness, should regularly be pruned.No matter major branch or side shoot constantly lengthen growth as cutting back not, and while growing to the 40cm left and right, the stem stalk starts to lodge to the periphery, at this moment should carry out cutting back, impels following axillary bud sprouting to branch out, and makes the strain clump dense and compact.
In addition, pilea cadierei or a kind of Chinese medicinal materials, as medicinal, all herbal medicine, have the functions such as clearing heat and detoxicating, diuresis.Its pharmacological action, for suppressing tubercule bacillus and Leptospira, all has restraining effect to streptococcus aureus, Hemolytic streptococcus.
Summary of the invention
Goal of the invention of the present invention is: can be used for processing that the plant resources that livestock breeding wastewater pollutes is not enough, winter hardiness is poor, easily the sewage water body caused the problem of secondary pollution for above-mentioned prior art, a kind of new plant resources that can be used for processing the waste water that waste water especially produces in the livestock and poultry cultivation process is provided.
The technical solution used in the present invention is such: the application of pilea cadierei in processing livestock breeding wastewater, adopt high 29cm, the rubber drum of footpath, end 26cm, high 32cm, water distributor is established in its bottom, in bucket, to be covered with thickness be 5cm, the diameter gravel bed at 2-5cm to bottom, being covered with the coarse sands layer that 10cm is thick on gravel bed, is the pedosphere that 10cm is thick above layer of sand; By the pilea cadierei seedling collected, directly be transplanted in rubber drum, with tap water, stablize 15 days, regular quantitative pouring livestock breeding wastewater after plant to be planted is stable, gather the water quality data of ammonia nitrogen, total phosphorus, total nitrogen, chemical oxygen demand, total content of organic carbon in water sample and mensuration water sample, the average purification rate obtained respectively ammonia nitrogen, total phosphorus, total nitrogen, chemical oxygen demand, total organic carbon is 90.01%, 89.93%, 95.71%, 91.22%, 96.42%; According to average purification rate data, further the pilea cadierei of some amount is planted in the Wetland Environment of livestock breeding wastewater, the over-ground part of the pilea cadierei of regularly cutting back pruning plantation, just can effectively purify the livestock breeding wastewater in wetland after pilea cadierei is bred certain biomass, the amount of plantation pilea cadierei is 6 strains/bucket.
Ashamed for one of preferred: that described pilea cadierei is carried out directly transplanting plantation.
As one of preferred: described pilea cadierei is carried out to cottage propagation.
As further preferred: all can carry out cottage propagation to pilea cadierei at spring and autumn, take root easily, at 20 ℃ of temperature, approximately within 1 week, can take root.
As further preferred: the over-ground part of the pilea cadierei of regularly cutting back pruning plantation.
As further preferably: in pilea cadierei eugonic 4~November, for preventing that the long outside lodging of its major branch or collateral generation from causing the secondary pollution of water body, the pilea cadierei over-ground part was carried out to cutting back pruning one time in every two months, retain stem culm base 2~3 joints; Axillalry bud can be sprouted and the new side shoot of pumping soon.
As further preferred: the top limb cuttage of the pilea cadierei after pruning is cultivated and taken root into a new strain in common compost or river sand.
The contriver, in long-term a large amount of experimental study process, finds that pilea cadierei can be as a kind of novel constructed wetland plant, and the ammonia nitrogen that can effectively reduce in livestock breeding wastewater (is NH 4 +-N), the content of the pollutents such as total phosphorus (being TP), total nitrogen (being TN), chemical oxygen demand (being CODcr), total organic carbon (being TOC), the mainly remarkable absorption of the common pollutent in to above-mentioned sewage of the pilea cadierei based on finding in long-term lot of experiments and remove characteristic, so be applied to the wastewater treatment of livestock and poultry cultivation.
In sum, the invention has the beneficial effects as follows:
1, the present invention finds that by long-term lot of experiments pilea cadierei has significant absorption and removes characteristic the pollutents such as NH4+-N, TP, TN, CODcr, TOC in livestock breeding wastewater, and fully take full advantage of this specific character, it is planted in the livestock breeding wastewater contaminate environment, the pollutents such as ammonia nitrogen, total phosphorus, total nitrogen, CODcr in the absorption and accumulation livestock breeding wastewater, thereby the content of the pollutents such as NH4+-N, TP, TN, CODcr, TOC in the reduction livestock breeding wastewater; During certain biomass to be formed, just can reach the purpose that reduces the content of the pollutents such as NH4+-N, TP, TN, CODcr, TOC in livestock breeding wastewater, further purify livestock breeding wastewater.
2, by regularly to gathering water sample in the livestock breeding wastewater having planted pilea cadierei and its effluent quality being measured, the sufficient proof pilea cadierei can effectively be removed the star that contains of the pollutents such as NH4+-N in livestock breeding wastewater, TP, TN, CODcr, TOC, thereby purifies livestock breeding wastewater.
3, physiological property due to pilea cadierei itself, its vitality is very vigorous, easily survive, can carry out the cuttage breeding, spring and autumn all can carry out, take root easily, cold-resistant, winter temperature is not less than 6 ℃ and can not endures cold, start growth more than 14 ℃, and be perennial plant, do not need annual plantation, do not need to carry out special management in its whole process of growth, thereby cost is low, working cost is low, effective, simple in operation, new plant resource variety has been developed in the processing of simultaneously also polluting for livestock breeding wastewater, the deep development of processing the livestock breeding wastewater pollution for constructed wetland plant has brought new progress and development space.
4, due to the anti-pruning of pilea cadierei, through regularly pruning, can prevent that its deadwood and rotten leaf from falling in water, can avoid the disadvantageous effect of using other plant in the winter time Sewage treatment systems to be brought, prevented the secondary pollution to water body, also can guarantee purifying water effect preferably in the winter time, solve most for the plant of purifying waste water decontamination effect improving undesirable problem in the winter time.
5, pilea cadierei not only has livestock breeding wastewater treatment effect preferably, and there is stronger view, environmental protection and the economic worth such as medicinal, compared with prior art, the present invention is no matter on running cost, Operation and Maintenance, treatment effect, or, on brought view, environmental protection, the economic worth such as medicinal, all there is obvious advantage.
The accompanying drawing explanation
Fig. 1 is that pilea cadierei is to NH in livestock breeding wastewater 4 +the treatment effect schematic diagram of-N;
Jail 2 is pilea cadierei treatment effect schematic diagram to TP in livestock breeding wastewater;
Fig. 3 is the treatment effect schematic diagram of pilea cadierei to TN in livestock breeding wastewater;
Fig. 4 is that pilea cadierei is to CODc in livestock breeding wastewater.The treatment effect schematic diagram;
Fig. 5 is the treatment effect schematic diagram of pilea cadierei to TOC in livestock breeding wastewater.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1:
Under natural condition, the pilea cadierei seedling collected is directly transplanted to paramount 29cm, in the rubber drum of footpath, end 26cm, high 32cm, water distributor is established in its bottom, by the supreme gravel bed that is followed successively by thickness 5cm, diameter 2-5cm left and right in the end, the rough sand layer that 10cm is thick, the pedosphere of 10cm thick (counting roughly 8kg), tap water is stablized 15 days.After plant to be planted is stable, regularly waters livestock breeding wastewater, and gather water sample and measure its effluent quality (hydraulic detention time is made as 7 days).The estimation equation that the pot experiment flooding quantity is recommended by Reed (1) is measured:
Q = F K - - - ( 1 )
In formula: Q-designs wastewater flow, m 3/ d;
The land area that F---artificial swamp takies, hrri2;
The K-coefficient, 6.57 * 10 -3.
As calculated, the processing water yield of potted plant experiment is 1.22L.
Formula (2) is separately arranged,
Q = Fqt 0.0365 - - - ( 2 )
In formula (2): the same formula of Q, F (1);
Q-hydraulic load, in m/ week, getting q is 20cm/d;
T-working time (whole year operation week number), week/a;
0.0365---reduction factor.
As calculated: Q=2.2L.
The NH of intaking by mensuration 4 +-N, TP, TN, CODcr,, the concentration of the pollutent such as TOC, the present embodiment determines that flooding quantity is 2.2L; Optimal water power standing time is 7 days (HRT=7d); The amount of plantation pilea cadierei is 6 strains/bucket.
To the measurement and calculation method of NH4+-N, TP, TN, CODcr, TOC in waste water, all with reference to the national standard measuring method, that is, and NH 4 +-N adopts nessler reagent spectrophotometry (GB7479-87), TP adopts ammonium molybdate spectrophotometry (GB11893-89), TN adopts potassium persulfate oxidation ultraviolet spectrophotometry (GB11894-89), CODcr adopts potassium dichromate oxidation (GB11914-89), and TOC adopts combustion oxidation one non-dispersion infrared absorption process (HJ501-2009).
In whole experimental stage, NH while adopting pilea cadierei to purify livestock breeding wastewater 4 +-N, TP, TN, CODcr, TOC
Deng the influent concentration of pollutent and go out water concentration and clearance referring to accompanying drawing 1-5, as can be seen from Figure, it is to NH in livestock breeding wastewater 4 +the clearance of the pollutents such as-N, TP, TN, CODcr, TOC is respectively: 82.87%~98.94%, 82.14%~93.28%, 88.35%~99.26,83.17%~93.82%, 92.92%~98.46%, average decontamination effect improving to NH4+-N, TP, TN, CODCr, TOC is 90.01%, 89.93%, 95.71%, 91.22%, 96.42%.
Visible by above-described embodiment, utilization of the present invention is planted pilea cadierei in the livestock breeding wastewater contaminate environment, there is significant effect to removing the pollutents such as NH4+-N, TP, TN, CODcr, TOC in livestock breeding wastewater, reached the purpose that good purification livestock breeding wastewater pollutes.

Claims (1)

1. the application of pilea cadierei in processing livestock breeding wastewater, it is characterized in that: water distributor is established in the bottom at rubber drum, in bucket, to be covered with thickness be 5cm, the diameter gravel bed at 2-5cm to bottom, is covered with the coarse sands layer that 10cm is thick on gravel bed, above layer of sand, is the pedosphere that 10cm is thick; Under natural condition, by the pilea cadierei seedling collected, directly be transplanted in rubber drum, with tap water, stablize 15 days, regular quantitative pouring livestock breeding wastewater after plant to be planted is stable, gather the water quality data of ammonia nitrogen, total phosphorus, total nitrogen, chemical oxygen demand, total content of organic carbon in water sample and mensuration water sample, the average purification rate obtained respectively ammonia nitrogen, total phosphorus, total nitrogen, chemical oxygen demand, total organic carbon is 90.01%, 89.93%, 95.71%, 91.22%, 96.42%; According to average purification rate data, further the pilea cadierei of some amount is planted in the Wetland Environment of livestock breeding wastewater, the over-ground part of the pilea cadierei of regularly cutting back pruning plantation, by regular pruning, prevent that deadwood and rotten leaf from falling in water, prevent the secondary pollution to water body, after pilea cadierei is bred certain biomass, just can effectively purify the livestock breeding wastewater in wetland, the amount of plantation pilea cadierei is 6 strains/bucket.
CN2010101226223A 2010-03-12 2010-03-12 Application of pilea cadierei in treating livestock and poultry breeding wastewater CN101774696B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010101226223A CN101774696B (en) 2010-03-12 2010-03-12 Application of pilea cadierei in treating livestock and poultry breeding wastewater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010101226223A CN101774696B (en) 2010-03-12 2010-03-12 Application of pilea cadierei in treating livestock and poultry breeding wastewater

Publications (2)

Publication Number Publication Date
CN101774696A CN101774696A (en) 2010-07-14
CN101774696B true CN101774696B (en) 2013-12-25

Family

ID=42511321

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010101226223A CN101774696B (en) 2010-03-12 2010-03-12 Application of pilea cadierei in treating livestock and poultry breeding wastewater

Country Status (1)

Country Link
CN (1) CN101774696B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102557264B (en) * 2012-01-13 2014-11-19 重庆文理学院 Application of ficus tikoua in purification of livestock and poultry cultivation biogas slurries
CN102515362A (en) * 2012-01-13 2012-06-27 重庆文理学院 Application of pokeberry root in purifying livestock and poultry breeding biogas slurry
CN102557265B (en) * 2012-01-13 2014-04-16 重庆文理学院 Application of rheum officinale to livestock and poultry culture biogas slurry purification
CN102557267A (en) * 2012-01-18 2012-07-11 重庆文理学院 Application of Reineckia carnea in purifying livestock breeding biogas slurry
CN102807284B (en) * 2012-01-18 2014-12-24 重庆文理学院 Application of Chinese crinums to purification of livestock and poultry breeding biogas liquid
CN102583753A (en) * 2012-01-18 2012-07-18 重庆文理学院 Application of zephyranthes candida in purifying livestock breeding biogas slurry
CN102583756B (en) * 2012-01-18 2014-04-16 重庆文理学院 Application of polygonum capitatum in purifying livestock breeding biogas slurry
CN102557266A (en) * 2012-01-18 2012-07-11 重庆文理学院 Application of Aglaonena Commutatum in purification of livestock and poultry breeding biogas slurry
CN102531188B (en) * 2012-01-18 2014-12-24 重庆文理学院 Application of Gonostegia hirta for purifying biogas slurry of livestock and poultry farming

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1218772A (en) * 1997-12-01 1999-06-09 中国科学院南京地理与湖泊研究所 Technology for purifying waste water by using flower plants

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4898085B2 (en) * 2003-10-22 2012-03-14 株式会社フジタ Method for removing contaminants from contaminated media

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1218772A (en) * 1997-12-01 1999-06-09 中国科学院南京地理与湖泊研究所 Technology for purifying waste water by using flower plants

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李盈盈等.人工湿地植物配置的技术与应用.《安徽农学通报》.2007,第13卷(第15期),49-50. *

Also Published As

Publication number Publication date
CN101774696A (en) 2010-07-14

Similar Documents

Publication Publication Date Title
De Stefani et al. Performance of a floating treatment wetland for in-stream water amelioration in NE Italy
Zhao et al. Purifying eutrophic river waters with integrated floating island systems
Pescod Wastewater treatment and use in agriculture
Bouman et al. Rice and water
Shelef et al. The use of Bassia indica for salt phytoremediation in constructed wetlands
Spangler et al. 19. Experimental Use of Emergent Vegetation for the Biological Treatment of Municipal Wastewater in Wisconsin
Kim et al. Use of sugar kelp aquaculture in Long Island Sound and the Bronx River Estuary for nutrient extraction
Wu et al. Constructed mangrove wetland as secondary treatment system for municipal wastewater
Koottatep et al. Role of plant uptake on nitrogen removal in constructed wetlands located in the tropics
Cattaneo et al. The relative contribution of aquatic macrophytes and their epiphytes to the production of macrophyte beds 1
Brix Do macrophytes play a role in constructed treatment wetlands?
Morari et al. Municipal wastewater treatment with vertical flow constructed wetlands for irrigation reuse
Wang et al. Floating treatment wetland nutrient removal through vegetation harvest and observations from a field study
Yang et al. Contaminant removal of domestic wastewater by constructed wetlands: effects of plant species
Konnerup et al. Treatment of fishpond water by recirculating horizontal and vertical flow constructed wetlands in the tropics
Tanner Plants for constructed wetland treatment systems—a comparison of the growth and nutrient uptake of eight emergent species
Ouellet-Plamondon et al. Artificial aeration to increase pollutant removal efficiency of constructed wetlands in cold climate
Wen et al. In situ removal of dissolved phosphorus in irrigation drainage water by planted floats: preliminary results from growth chamber experiment
Wantzen et al. Organic matter processing in tropical streams
Gupta et al. Treatment of water using water hyacinth, water lettuce and vetiver grass–a review
Li et al. In situ nutrient removal from aquaculture wastewater by aquatic vegetable Ipomoea aquatica on floating beds
Toscano et al. Comparison of removal efficiencies in Mediterranean pilot constructed wetlands vegetated with different plant species
CN103894401B (en) A kind of plant restoration method administering the plumbous arsenic combined contamination soil of cadmium
Vymazal et al. Removal mechanisms and types of constructed wetlands
Jayaweera et al. Removal of nitrogen and phosphorus from industrial wastewaters by phytoremediation using water hyacinth (Eichhornia crassipes (Mart.) Solms)

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131225

Termination date: 20200312