Fifty (50) litres of compost leachate from Fomas Venture
Nigeria Ltd, Delta state,; managers of organic waste from
Shell Petroleum Development Company; was collected,
filtered using a very fine mesh (2.0mm) and transferred into
a 60 litres capacity tank with Vetiveria zizanioides (vertiver
grass) as bio-purificator. The experiment was carried out
under natural condition for 112 days without aeration.