新型膜电解反应器深度处理含盐农药废水

Pesticide Wastewater Advanced Treatment by New Electrolytic Membrane Reactor

在传统三室膜电解槽的基础上进行改进,将各槽室之间通过阴阳离子交换膜(均相离子交换膜)隔开,分成中间淡化室和两侧的阴阳极室,各槽室中的溶液不断循环。以期改善传统反应器无法去除有机物和脱盐率低等缺点。结果表明,电压越高脱盐率越高,但当电压升高到18 V时反应器运行电流已接近极限电流值,同时三环唑的去除率随电压升高的幅度较小。Na_2SO_4含量升高脱盐率和三环唑去除率随之升高,但当Na_2SO_4的质量浓度为10 g/L时脱盐开始出现下降。新型反应器脱盐率、电流效率更高,尤其是在高盐分的情况下,同时对有机物具有直接的降解作用,出水毒性有机物含量极低。

The traditional three-compartment electrolysis reactor was improved, and the compartments was separated to desalination compartment and cathode compartment and the anode compartment by cation and anion exchange membranes, the solution circulated continuously in each compartment. The weaknesses of traditional reactor such as organic cannot be removed and low desalination rate were improved. The results showed that, the desalination rate was increased with the increase of voltage until to 18 V, the running current of reactor was closed to the limitation value, and the tricyclazole removal rate was increased slightly with the increase of voltage. The desalination rate and tricyclazole removal rate were increased with the increase of Na_2SO_4 content, but when the mass concentration of Na_2SO_4 was 10 g/L, the desalination rate started to decrease. The new reactor had high desalination rate and current efficiency,especially under high salinity condition, meanwhile it could degrade organic directly, and the toxic organic content of effluent was extremely low.