Tannery waste works in farm experiment
22/03/2010
An centre for agricultural research in the Brazilian state of São Paulo has carried out tests on using tannery waste as fertiliser.The Luiz de Queiroz school of agricultural research in the city of Piracicaba tried out two different kinds of sludge from tanneries—sludge from primary settling and sludge from activated effluent treatment plants—on...