Assessment of Environmental Effect and Fertilization at Deep Seawater Discharged Area

摘要

This paper presents a brief review of recent researches onenvironmental impact assessment for pumping-up and dischargingdeep seawater, which is performed as a part of a national projectdriven by Japan Ocean Industries Association (JOIA). Theseresearches focus on several environmental effects, such asbiological entrainment, CO2 emission from power plant, coolingwater discharge, and fertilization for phytoplankton and seaweed.The results of these assessments suggest that dominantenvironmental effects of pumping-up and discharging deepseawater are environmental benign, e.g. fertilization, anddevelopment of a proper discharging system is important.