Solidification of Electroplating Wastewater Treatment Sludges with Cement

At the Sao Paulo Metropolitan Area, the sludge resulting from treatment of electroplating industry wastewater is inadequately disposed of, generating environmental hazards. A possible way to solve this problem is the cementation of this sludge before disposal. From July, 1986 to March, 1987, the authors developed laboratory tests on cementation of electroplating wastewater treatment sludges. Performed at the laboratories of Escola Politecnica of the University of Sao Paulo and of CETESB, tests were conducted with three types of cement produced in Brazil - CPC - Portland Cement, POZ - pozzolanic cement and CAF - blast furnace cement.