TOKYO (Reuters) - Tokyo Electric Power (Tepco) said on Wednesday it has set aside 75.3 billion yen ($500 million) so far to compensate businesses hurt by boycotts triggered by Tepco's discharge of treated radioactive water from the Fukushima nuclear power plant. China and Russia have banned seafood imports from Japan over safety concerns that Tokyo has said are scientifically unjustified. Fukushima operator Tepco has vowed to compensate domestic businesses which suffer a fall in exports due to the bans. Tepco began releasing treated radioactive water from the wrecked Fukushima Daiichi Nuclear Power Plant last August. It has conducted seven discharges from the plant, which was hit by an earthquake and tsunami in 2011 in the world's worst nuclear disaster since Chernobyl. "We have carried out seven discharges to the sea without anomalies," Tepco's representative executive vice president, Hiroyuki Yamaguchi, told a news conference.