A water treatment system at Japan’s stricken Fukushima nuclear plant is going back online for tests.
The Advanced Liquid Processing System or ALPS can remove 62 radioactive elements found in the water, although it cannot remove tritium.
Most importantly it can process the water at a faster rate than it can accumulate, increasing cleaning capacity from 500 tons to 1,500 tons per day .
Tokyo Electric Power Co (TEPCO) had begun trials of ALPS in March but they were postponed after corrosion was found leading to leaks.
The plant has been struggling to deal with waste water used to cool molten reactors since the accident in 2011.
TEPCO was heavily criticised over its cleanup operation when leaks were confirmed earlier this year.
It has pledged a further 7 billion euros to operations preventing further contamination.