Study on the degradation of triethylamine wastewater by catalytic ozone-biological coupled system of Ce-Fe@ZSM-5

Abstract

Triethylamine (TEA) is an organic amine, due to the development of the pesticide industry, TEA wastewater volumes of yearly increasing, the poor biochemical performance and high toxicity. Therefore, we report a novel ozone catalyst as biological treatment technology by compounding Ce-Fe@ZSM-5 molecular sieve and domesticated activated sludge to construct a catalytic ozone-biodegradation coupling system. The low efficiency of ozone utilization was addressed by optimizing the stability and activity strength of the catalyst with a large specific surface area. The degradant rate of TEA reached 89.5 % versus 82 % of biological treatment and the elimination rate of TOC reached 71.5 %, which is 7.5 % increase the biological treatment of TEA. In order to efficiently degrade TEA and other organic amine compounds, the degradation pathway and mechanism of TEA were investigated. This research offered a theoretical foundation and prospective application for degradation of TEA.