液膜法萃取含铬废水传质过程的研究

A STUDY ON MASS TRANSFER PROCESS IN EXTRACTION OF CHROMIUM FROM WASTE WATER WITH LIQUID MEMBRANES

本文通过实验研究了液膜法萃取含铬废水的各种影响因素,获得了使含铬废水达到国家排放标准的最佳工艺条件。提出了以R_f=R(1-(ε·D_(eff)·t/R^2·)^(1/2)A+B·εD_(eff)·t/R^2)表示反应前沿半径变化规律的反应前沿模型。

In batch extraction of chromium from waste water with liquid membranes, we studied the effect of various factor on efficiency of separation and have got the best technological condition which makes waterachicvc the discearge criterion of our country. A reaction front model, In which reaction frontradius changes on the regulation of i spresented. Curve-fitting was completed by means of computer, the value of A and B three kinds of surfactant membrans has been achieved. The Agreements between the model ic prediction and experiment deta are good.