Plants of Constructed Wetland Wastewater Treatment Systems: A Comparison of the Oxygen Release from Roots of Typha and Phragmite

Abstract:

Constructed wetlands have recently been widely used around the world to purify wastewater. As an important component of constructed wetland system, plants improve water quality by increasing oxygen concentrations in the rhizosphere. However, little was known about the ability of oxygen release from roots with different species. And the reason of the difference is still unclear. This paper investigated the variation of oxygen release rate from roots of Typha and phragmite using a titanium (Ш) citrate buffer. Compared the ability of oxygen release from Typha and phragmite. The results shows that oxygen release rates with the same condition were higher for Phragmites. This difference is caused by the special structure of Phragmites. The aerenchyma of Phragmites is good at the oxygen transport. The results of this paper can help us to choose better vegetation species for wastewater treatment.

• Periodical: Applied Mechanics and Materials (Volumes 641-642)
• Pages: 371-375
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.641-642.371
• Online since: September 2014
• Authors: Chan Dong*, Ying Hao Huang, Shun Cai Wang, Yong Jie Huang, Lei Tao, Yue Xin Xu
• Keywords: Constructed Wetland, Oxygen, Vegetation, Wastewater

References

[1] S. Sasikala, N. Tanaka, H. S. Y. Wah Wah, K. B. S. N. Jinadasa. Effects of water level fluctuation on radial oxygen loss, root porosity, and nitrogen removal in subsurface vertical flow wetland mesocosms[J]. Ecological Engineering, 2009, 35(3): 410-417.

DOI: 10.1016/j.ecoleng.2008.10.003

[2] C.C. Brueske, G.W. Barrett. Effects of vegetation and hydrologic load on sedimentation patterns in experimental wetland ecosystems[J]. Ecological Engineering, 1994, 3: 429-447.

DOI: 10.1016/0925-8574(94)00011-5

[3] J. Coleman, K. Hench, K. Garbutt, A. Sexstone, G. Bissonnette, J. Skousen. Treatment of domestic wastewater by three plant species in constructed wetlands[J]. Water Air Soil Pollut, 2001, 128: 283-295.

DOI: 10.1023/a:1010336703606

[4] R.G. Wetzel. Land-water interfaces: metabolic and limnological regulators(Edgardo Baldi Memorial Lecture)[J]. Ver. Int. Ver. Limnol., 1990, 24: 6-24.

[5] C.C. Tanner, J.P. Sukias. Accumulation of organic solids in gravel-bed constructed wetlands[J]. Water Science and Technology, 1995, 32: 229-239.

DOI: 10.2166/wst.1995.0145

[6] S. Soda, M. Ike, Y. Ogasawara, M. Yoshinaka, D. Mishima, M. Fujita. Effects of light intensity and water temperature on oxygen release from roots into water lettuce rhizosphere[J]. Water Research, 2007, 41(2): 487-491.

DOI: 10.1016/j.watres.2006.10.009

[7] B.K. Sorrell, W. Armstrong. On the difficulties of measuring oxygen release by root systems of wetland plants[J]. journal of Ecology, 1994, 82: 177-183.

DOI: 10.2307/2261396

[8] N. Dorthe, K. Jespersen, Sorrell, Brian, Brix, Hans. Growth and root oxygen release by Typha latifolia and its effects on sediment methanogenesis[J]. Aquatic Botany, 1998, 61(3): 165-180.

DOI: 10.1016/s0304-3770(98)00071-0

[9] X.Q. Mei, Z. H. Ye, M. H. Wong. The relationship of root porosity and radial oxygen loss on arsenic tolerance and uptake in rice grains and straw[J]. Environmental Pollution, 2009, 157(8-9): 2550-2557.

DOI: 10.1016/j.envpol.2009.02.037

[10] C. Dong, W. Zhu, M. Gao, L. F. Zhao, J. Y. Huang, Y. Q. Zhao. Diurnal Fluctuations in Oxygen Release from Roots of Acorus calamus Linn in a Modeled Constructed Wetland[J]. Journal of Environmental Science and Health, Part A., 2011, 46(3): 224-229.

DOI: 10.1080/10934529.2011.535391

[11] U. Stottmeister, A. Wieβner, P. Kuschk, U. Kappelmeyer, M. Kästner, O. Bederski, R. A. Müller, H. Moormann. Effects of plants and microorganisms in constructed wetlands for wastewater treatment[J]. Biotechnology Advances, 2003, 22(1-2): 93-117.

DOI: 10.1016/j.biotechadv.2003.08.010