Reduction of heavy metals from waste water by wetland

• Autorzy: Sahu O.
• Języki publikacji: EN

Abstrakty

EN

Constructed wetlands are artificial wastewater treatment systems consisting of shallow ponds or channels which have been planted with aquatic plants, and which rely upon natural microbial, biological, physical and chemical processes to treat wastewater. They typically have impervious clay or synthetic liners, and engineered structures to control the flow direction, liquid detention time and water level. Depending on the type of system, they may or may not contain an inert porous media such as rock, gravel or sand. Constructed wetlands have been used to treat a variety of wastewaters including urban runoff; municipal, industrial, agricultural and acid mine drainage. In this regard’s an attempted has been made to reduce the heavy metal present in waste water.

Słowa kluczowe

EN

metal reduction; heavy metal; waste water; wetland; biomass; contaminant; metal ion; natural treatment

• Wydawca: -
• Czasopismo: International Letters of Natural Sciences
• Rocznik: 2014
• Tom: 07
• Opis fizyczny: p.35-43,fig.,ref.

Twórcy

autor

Sahu O.

• Department of Chemical Engineering, KIOT Wollo University, Kombolcha, Ethiopia

Bibliografia

• [1] Allen W.C., Hook P.B., Beiderman J.A., Stein O.R. (2012). Temperature and wetland plant species effects on wastewater treatment and root zone oxidation. Journal of Environmental Quality, 31: 1010-1016.
• [2] Bailey L.D. (1976). Effects of temperature and root on denitrification in a soil. Canadian Journal of Soil Science, 56: 79-87.
• [3] Baker D.B., Richards R.P. (2002). Phosphorus budgets and riverine phosphorus expert in northwestern Ohio watersheds. Journal of Environmental Quality, 31(1): 96-108.
• [4] Baker L.A. (2008). Design consideration and applications for wetland treatment of high- nitrate waters. Water Science and Technology, 38(1): 389-395.
• [5] Carleton J.N., Grizzard T.J., Godrej A.N., Post H.E. (2011). Factors affecting the performance of stormwater treatment wetlands. Water Research, 35(6): 1552-1562.
• [6] Carvalho K.M., Martin D.F. (2011). Removal of aqueous selenium by four aquatic plants. Journal of Aquatic Plant Management, 39: 33-36.
• [7] Eriksson P.G. (2011). Interaction effects of flow velocity and oxygen metabolism on nitrification and denitrification in biofilms on submersed macrophytes. Biogeochemistry, 55: 29-44.
• [8] Fennessy M.S., Brueske C.C., Mitsch W.J. (2002). Sediment deposition patterns in restored freshwater wetlands using sediment traps. Ecological Engineering, 3(4): 409-428.
• [9] Hao X., van Loosdrecht M.C.M. (2004). Model-based evaluation of COD influence on a partial nitrification-Anammox biofilm (CANON) process. Water Science and Technology, 49(11-12): 83-90.
• [10] Langergraber G. (2005). The role of plant uptake on the removal of organic matter and nutrients in subsurface flow constructed wetlands: a simulation study. Water Science and Technology, 51(9): 213-223.
• [11] Malmaeus J.M., Hakanson L. (2003). A dynamic model to predict suspended particulate matter in lakes. Ecological Modelling, 167(3): 247-262.
• [12] Rasit N.B. (2006). Landfill leachate treatment using subsurface flow constructed wetlands enhanced with magnetic fields. M.S. Thesis, Malaysian University of Technology (Terengganu Darul Iman, Malaysia).
• [13] Salih F.M. (2013). Formulation of a mathematical model to predict solar water disinfection. Water Research, 37(16): 3921-3927.
• [14] Smith E., Gordon R., Madani A., Stratton G. (2005). Cold climate hydrological flow characteristics of constructed wetlands. Canadian Biosystems Engineering, 47: 1.1-1.7.
• [15] Tao W., Hall K.J., Duff S.J.B. (2006). Heterotropic bacterial activities and treatment performance of surface flow constructed wetlands receiving wood waste leachate. Water Environment Research, 78(7): 671-679.
• [16] Thullen J.S., Sartoris J.J., Nelson S.M. (2005). Managing vegetation in surface-flow wastewater-treatment wetlands for optimal treatment performance. Ecological Engineering, 25(5): 583-593.
• [17] Vymazal J. (2005). Horizontal sub-surface flow and hybrid constructed wetland systems for wastewater treatment. Ecological Engineering, 25(2005): 478-490.
• [18] Wang G.-P., Liu J.-S., Tang J. (2004). The long-term nutrient accumulation with respect to anthropogenic impacts in sediments from two freshwater marshes (Xiamghai Wetlands, Northeast China). Water Research, 38(30): 4463-4474.
• [19] Zachritz W.H., Lundie L.L., Wang H. (2006). Benzoic acid degradation by small, pilot-scale artificial wetlands filter. Ecological Engineering, 7(2): 105-116.
• [20] Stottmeister U, Wießner A, Kuschk P, Kappelmeyer U (2003). Effects of plants and microorganisms in constructed wetlands for wastewater treatment. Biotechnol. Adv., 22: 93-117.
• [21] Romero SE, Nunez LJ, Negrete M, Rios JEA, Hadad HR, Maine MA (2011). Hg, Cu, Cd, and Zn Accumulation in Macrophytes growing in tropical wetlands. Water Air Soil Pollut., 216: 361-373.
• [22] Sheoran AS, Sheoran V (2006). Heavy metal removal mechanism of acid mine drainage in wetlands: A critical review. J. Miner. Eng., 19:105-116.
• [23] Karim MR, Manshadi FD, Karpiscak MM, Gerba CP (2004). The persistence and removal of enteric pathogens in constructed wetlands. J. Water Res., 38: 1831-1837.