提出了一种膜分离和电吸附耦合的导电复合膜工艺对含Vu(Ⅱ)废水进行处理,采用自制复合膜研究了外加电压、膜通量和进水Cu(Ⅱ)浓度等条件对复合膜吸附去除Cu(Ⅱ)的影响。结果表明,在外加电压0—1.6V、膜通量8~40L·(m^2·h)^-1的条件下,电压越大,膜通量越小,总溶解性固体(TDS)去除率越大;膜通量越大,TDS吸附量越大。在cu(Ⅱ)浓度5~40mg·L^-1的条件下,Cu(Ⅱ)浓度越大,TDS去除率越小,而吸附量越大。不同工况条件下,跨膜压差均维持在较低水平。本研究为重金属废水的处理提供了新思路。
In the present study, a conductive composite membrane process, coupling membrane separation, and electrosorption were developed for Cu ( Ⅱ ) removal. The effects of applied voltage, flux, and feed Cu ( Ⅱ ) con- centration on the system performance were investigated using self-made composite membrane modules. Results showed that when the applied voltages and flux were within the range 0-1.6 V and 8-40 L · m^-2· h^-1 ,respec- tively, the removal rates of total dissolved solids (TDS) were higher with larger applied voltages and smaller flux, and TDS adsorption amounts increased with flux. At feed Cu( Ⅱ ) concentration of 5-40 mg· L^-1, the TDS removal rates decreased. TDS adsorption amounts increased at higher Cu ( Ⅱ ) concentrations. Transmembrane pressure values remained low in all cases. This work provided new insight into heavy metal wastewater treatment.