Dissertation > Excellent graduate degree dissertation topics show

Research on Technology of Phytoremediation of Farmland Drainage

Author: LiuZuoYun
Tutor: GongDaoXin；ZuoJiaBu
School: Hunan Agricultural University
Course: Environmental Engineering
Keywords: farmland drainage total nitrogen (TN) total phosphorus (TP) Difenoconazole aquatic plants remediation
CLC: X53
Type: Master's thesis
Year: 2011
Downloads: 84
Quote: 1
Read: Download Dissertation

Abstract


The farm chemicals (mainly included chemical fertilizer and pesticides) are widely used in the field of the ecological system,which lead the water contained a lot of N&P and other nutrients and it also contains little of the pesticide during farmland drainage. It can cause water eutrophication and pesticide residue pollution to the water after these matters followed into the surface water. This can be a threat to drinking water for people and livestock and lead to the death of the aquatic animals. This research studied six common aquatic plants by introducing a space technology through analogue experiment. There are Oenanthe javanica、Ipomoea aquatica Forsk、Eichhornia crassipes、Lemma Paucicostata、Spirodela polyrrhiza and Azolla imbircata the absorption and purification ability of TN、TP and Difenoconazole in the artifical farmland drainage. The result showed that:six experimental aquatic plants have great absorption and purify capacity to TN、TP and Difenoconazole.The ability to remove and purify TN is as follow: Ipomoea aquatica Forsk>Oenanthe javanica>Eichhornia crassipes>Azolla imbircata>Spirodela polyrrhiza>Lemma Paucicostata.The ability to TP is as follow: Oenanthe javanica>Ipomoea aquatica Forsk> Eichhornia crassipes>Spirodela polyrrhiza> Azolla imbircata>Lemma Paucicostata.The ability to Difenoconazole is as follow:Oenanthe javanica>Eichhornia crassipes>Ipomoea aquatica Forsk> Spirodela polyrrhiza>Azolla imbircata>Lemma Paucicostata.Considering Oenanthe javanica and Ipomoea aquatica Forsk can be eaten as vegetable,and Lemma Paucicostata and Azolla imbircata can feed farm animal, Taking Oenanthe javanica and Ipomoea aquatica Forsk as the main aquatic plants and also taking the different aquatic plants growing season characteristics and ecological habits and ecosystem diversity and stability into consideration, The author tried to build 4 binary complex plant Systems based on "Oenanthe javanica-Azolla imbircata"、"Ipomoea aquatica Forsk-Azolla imbircata"、"Oenanthe javanica-Lemma Paucicostata" and "Ipomoea aquatica Forsk-Lemma Paucicostata",And apply it to the remediation and treatment of the farmland drainage, so it can not only absorb nitrogen and phosphorus to produce Oenanthe javanica and Ipomoea aquatica Forsk ,and also remediate the remains of farm pesticide residne-Difenoconazole .The results showed that the above 4 binary compound ecological systems can further improve the absorption and purification ability of TN TP and Difenoconazole .The purification ability of Difenoconazole increased almost 1 time.

Related Dissertations

  1. Health Risk Assessment of a Brownfield Contaminated by Volatile Chlorinated Hydrocarbons and Study on Screening of Remediation Technique,X820.4
  2. Isolation and Identification of Pyrene-Degrading Strain SE12 and Its Degrading Effect,X172
  3. Field In-Situ Remediation of Cu-Cd Polluted Soil by Amendments,X53
  4. Effects of Three Aquatic Plants on Soil Properties and Depletion of Rhizosphorus Nitrogen and Phosphorus,S154.4
  5. Effect of Flue-cured Tobacco Continuous Cropping on Soil Chemical and Physical Properties and Tobacco Leaf Quality,S572
  6. Increased Cd and Cu Accumulation and Heavy Metal-tolerance of Plants by ACC-deaminase Producing Bacteria and the Mechanisms,X172
  7. East Taihu common submerged plants as a source of the feasibility study crab feed,S966.16
  8. Studies on Phytoremediation of COD and Ammonia-Nitrogen in Coking Wastewate by Six Aquatic Plants,X784
  9. Nitrogen and Phosphorus Purification of Ecological Ditch and Nitrogen Removal Efficiency of Myriophyllum Spicatum L.,X173
  10. A Basic Study on Preparation Method of Nano Fe/Ni Bimetallic Particles and Its Removal Capacity for CAHs from Water,X523
  11. Based on microbiological and chemical repair of chromium slag yard soil quality and ecological risk assessment,X53
  12. Electrokinetic Transport of Carboxymethyl Cellulose Stabilized Pd/Fe Nanoparticles for the Remediation of Pentachlorophenol-contaminated Soil,X53
  13. Decontaminating the role of landscape water,X173
  14. Electrostatic spinning bimetallic nanoparticles containing polymer nanofibers and environmental remediation applications,TB383.1
  15. Typical industrial contaminated soil remediation technologies dielectric barrier discharge plasma research,X53
  16. Zhejiang synthetic leather industry in a region DMF pollution monitoring, assessment and comprehensive treatment measures for research,X794
  17. Difenoconazole azole in litchi and soil residues and degradation dynamics,S481.8
  18. Isolation of Hydrocarbon Degradation Fungi and Their Effect on Bioremediation,X172
  19. Plant-microbial Remediation for Crude Oil Contaminated Soil under Different Salt Content,X172
  20. The Study of Ultrasonic Extraction Combine with Fenton Oxidation to Dispose the Phenol-Contaminated Soil,X53
  21. Study on Environment Impact Assessment of the Provincial Land Remediation Planning,F301

CLC: > Environmental science, safety science > Environmental pollution and its prevention > Soil Contamination and Control
© 2012 www.DissertationTopic.Net  Mobile