Sentences with phrase «sludge on agricultural land»

Not exact matches

An important advantage, says Pirt, is that the minerals become concentrated in the residual solids, enabling extraction of heavy metals such as cadmium and mercury, which could pose environmental problems in sludge spread on agricultural land.

In Ontario, Canada, they get a lot of sewage sludge out of the treatment plants; 120,000 tonnes are spread on 37,000 acres of agricultural land.

Caterpillar manufactures equipment intended to handle toxic sludge, to dump it in landfills and to spread it on agricultural land.