例,某化工厂年产重铬酸钠(Na2Cr2O 7·2H2O)-|||-2010t,其纯度为98%,每吨重铬酸钠耗用铬铁-|||-矿粉(FeO.Cr2O3)3)1440kg,铬铁矿粉含Cr2O3量为-|||-50%,重铬酸钠转炉焙烧转化率为80%,含铬废-|||-水处理量为75000m^3,处理前废水六价铬浓度-|||-C0为 .175kg/t, 处理后六价铬浓度C1为 .005kg/t,-|||-铬渣、铝渣、芒硝未处理,试求该厂全年六价-|||-铬的流失量。已知生产过程中总的化学反应方-|||-程式如下:-|||-cdot (Cr)_(2)(O)_(3)+2(Na)_(2)C(O)_(3)+(H)_(2)S(O)_(4)+dfrac (7)(4)(O)_(2)arrow -|||-_(2)(Cr)_(2)(O)_(7)+(Na)_(2)S(O)_(4)+dfrac (1)(2)(Fe)_(2)(O)_(3)+(H)_(2)O+2C(O)_(2)uparrow