ArticleAuthors: Nguyen, Thi Ha; Tran, Yem; Vu, Thi Mai (2008)
In this study, primarily treating waste sludge rich of Cr, Ni, Fe,…generated from
electroplating wastewater treatment plant and experimentally methods of utilizing wastes as inorganic pigment in production of bricks were carried out. Economic, technical and environmental efficiency and feasibility, bases to apply to practical conditions were evaluated. The results show that water accounts for about 70% of sludge. Contents of Ni, Cr and Fe are relatively high (20, 4.5 and 2.5%, respectively). The wastes could be used to replace inorganic pigment in brick production after being primarily treated with a simple procedure. The optimal rate
of replacing inorganic pigment is about 5% and ... 
