Abstract:
H2O2 is widely used in the treatment of refractory organic pollutants.However, due to its explosive and corrosive chemical characteristics, H2O2 will bring great safety risks and troubles in transportation.So we chose sodium percarbonate(SPC) to be used in catalytic wet peroxide oxidation enhanced by swirl flow(SF-CWPO) and we designed carbon nanotubes with Ni single atom sites(Ni-NCNTs/AC) to activate SPC to treat an m-cresol wastewater containing Si.Meanwhile, artificial intelligence which used Artificial neural network (ANN) was used to optimize the conditions.Under the conditions of pH = 9.27, reaction time of 8.91 min, m-cresol concentration is 59.09 mg L-1, SPC dosage is 2.80 g L-1 and Na2SiO3·9H2O dosage is 77.27 mg L-1, the degradation rate of total organic carbon(TOC) and m-cresol reaches 94.37% and 100%, respectively.Finally, the applicability of Ni-NCNTs/AC-SPC-SF-CWPO technology was evaluated in a wastewater system of a sewage treatment enterprise and Fourier transform ion cyclotron resonance mass spectrum(FT-ICR MS) analysis and chemical oxygen demand(COD) analysis showed the great ability of Ni-NCNTs/AC-SPC-SF-CWPO technology to treat wastewater.It is believed that this paper is of great significance to the design and construction of the in-depth research and industrial application of SF-CWPO.
摘要:
H2O2广泛应用于难降解有机污染物的处理。然而,由于其爆炸性和腐蚀性的化学特性,H2O2会给运输带来很大的安全隐患和麻烦。因此,我们选择过碳酸钠(SPC)用于涡流增强的催化湿式过氧化物氧化(SF-CWPO),并设计了具有Ni单原子位点的碳纳米管(Ni-NCNTs/AC)来活化SPC以处理间甲酚含硅废水。同时,利用人工神经网络(ANN)进行条件优化。在pH=9.27,反应时间8.91min的条件下,间甲酚浓度为59.09mgL-1,SPC用量为2.80gL-1,Na2SiO3·9H2O用量为77.27mgL-1,总有机碳(TOC)和间甲酚的降解率达到94.37%和100%,分别。最后,在污水处理企业的废水系统中评估了Ni-NCNTs/AC-SPC-SF-CWPO技术的适用性,并进行了傅立叶变换离子回旋共振质谱(FT-ICRMS)分析和化学需氧量(COD)分析。Ni-NCNTs/AC-SPC-SF-CWPO技术处理废水的能力很强。相信本文对SF-CWPO的深入研究和工业应用的设计与施工具有重要意义。