report on on this waste stream that the German government recently submitted to the European Commission indicated that the levels of lead, cadmium, chromium, mercury and zinc in sewage sludge have declined again. On the other hand, the level of copper and nickel contamination has been virtually unchanged for several ...
Heavy metal content in sewage sludge falling (D) – The heavy metal content in sewage sludge has continually decreased in Germany over the past three years. A
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