摘要
提出了一种膜分离和电吸附耦合的导电复合膜工艺对含Cu(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0~1.6 V、膜通量8~40 L·(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5~40 mg·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.
出处
《环境工程学报》
CAS
CSCD
北大核心
2017年第7期4017-4022,共6页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(51422811)
关键词
重金属去除
膜分离
电吸附
废水处理
heavy metal removal
membrane separation
electrosorption
wastewater treatment
