The project conducted the domestic and international phytoremediation lietratures collection. Consideration of plants arsenic removal efficiency, domestic geological consitions etc., five plants and three plants were selected for pot and on-site experiment, respectively. Pteris vittata L. is a phytoextraction plant, while cultivated on-site for 6 monthes, the arsenic removal was 338 mg-As/m2 Rotala rotundifolia L. and Zea mays L. were cultivated for six and four months, 8.8 mg-As/m2 and 8.4 mg-As/m2 were removed, respectively. The arsenic in marize kernel was lower than cereal total arsenic limitation, 1 mg/kg, therefore it could be used as feed. Lastly, consideration of both farmland sustainable use and contamination remediation, the risk management in arseic-riched influenced farmland was imported to discuss the farmland mamangemnet strategies. In this project four main technologies were aggregated and to plan the laboratory and on-site experiemnts. While satisifying of the irrigation water demand, arsenic concentration of effluent groundwater was lower than irrigation water quality, 50 µg/L, for both air exposure and adsorption technologies. Meanwhile, the operation, cost and wastes treatment were evaluated. Finally, the potential risk and contamination senarios of groundwater irrigatied in arenic-riched influenced areas were studied. The potential users, time and limitationds of the success technologies were summaried, also the standard assessment flowchart were constructed for reference in application. In this project, the on site rapid technologies were collected, the electric-chemistry analysis method was chossed by evaluating the economic and operation aspect. The private wells groundwater sampling and detection in ChiaYi county and Yunlin county were conducted, total in 200 wells. The correlation between on site rapid and standard detection was 0.83, the potential influence parameters were pH, total organic carbon, iron and electronic conductivity. Lastly, the technology, cost and regulations feasibility were evaluated. It is expected to act as a useful tool for on site groundwater detection.

Pot and In-situ experiment of phytoremediation on soil arsenic removal, Lab and In-situ experiemnet of groundwater arsenic removal, Application of on-site rapid arsenic detection technology