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Removed copper filter cake, which contains heavy metals, from EPA's hazardous waste list Read more »

Removed copper filter cake, which contains heavy metals, from EPA's hazardous waste list Read more »

However, filter cake from facilities treating wastes could have a radiological environmental impact if spilled, and there is also a potential long-term disposal issue.

It is also a simple matter to wash out the wort from the filter cake in the presses, and experience has shown that markedly increased yields are thus obtained.