Developing design guidelines for constructed wetlands to remove pesticides from agricultural runoff

Efficiency of constructed wetlands in decontamination of water polluted by heavy metals

“…They are used not only to degrade organic substances and nutrients from municipal sewage, storm water, and agricultural runoff (Rodgers and Dunn, 1992;Lakatos et al, 1997), but also to remove metals from mining effluent and special industrial wastewater (Tang, 1993;Crites et al, 1997;Obarska-Pempkoeiak and Klimkowska, 1999).…”

Xenobiotics removal from polluted water by a multifunctional constructed wetland

“…Constructed wetlands (CWs), which are highly economic systems for treatment of municipal wastewater, storm water, and agricultural runoff (Rodgers and Dunn, 1992;Lakatos et al, 1997), are newly designed for decontamination of polluted surface water (Grosse et al, 1998a,b), including removal of xenobiotics (e.g., omethoate, parathion, 4-chloro-2-methyl-phenoxyacetic acid (MCPA), dicamba) for potential water reuse. In this paper, beside chemical analysis, bioassays by duckweed Lemna minor L. were performed to evaluate the quality of water to be reused for irrigation in agriculture.…”

Focus on Field Stations

“…The goal of this research is to provide the best management practices for utilization of constructed wetlands as buffer zones for agricultural lands in order to minimize impacts of cropland runoff on receiving waters. During the summers of 1997 and 1998, extensive mesocosm tests were conducted at the Field Station to determine constructed wetlands' ability to retain and process pesticides associated with simulated runoff events (Moore 1999 Other research issues that are being addressed at UMFS include the use of innovative methods to clean water (Rodgers and Dunn 1992) and reduce economic and health impacts of contamination; enhancement of runoff quality from farms to achieve waste-minimizing agriculture while meeting increasingly stringent regulatory requirements; conservation of agricultural water supplies through reuse; reduction of sedimentation Rodgers 1994 a,b, Suedel et al 1996 a,b); conservation of surface waters; and reduction of water degradation through use of constructed wetlands (Davis and Holland 1997, 1998, Davis 1998. Associated with this research are improvements of human health through reduced toxicity, detoxification, and microbial transformation of agrichemicals (Deaver 1995, Sturgis 1995.…”