紫外光催化处理小型污水站恶臭气体实验研究

Study on experiment of ultraviolet light catalytic treatment of malodorous gas in small sewage stations

恶臭气体是污水处理站典型环境影响之一,扰民现象严重。恶臭气体的主要成分为H2S、NH3等。通过紫外光二氧化钛催化降解污水站恶臭气体实验,较好地解决了小型污水站恶臭气体扰民问题。实验结果表明,H2S从0.14~0.388mg/m^3降低到低于检出下限,NH3从0.279~1.64 mg/m^3降低到低于检出下限;工艺会伴随产生O3等副产物,但随着自然扩散较快,浓度较低;未检测出CO副产物。

Malodorous gas is one of the typical environmental impacts caused by sewage treatment stations,which seriously disturbs people around.This problem has been well sloved by the experiment of catalyzing the degradation of malodorous gas in sewage station by ultraviolet TiO2.The main components of malodorous gas are H2S,NH3 and the like.The experimental results show that H2S decreases from 0.14~0.388 mg/m^3 to below the detection limit,and NH3 also decreases from 0.279~1.64 mg/m^3 to below the detection limit.The process is accompanied by the production of by-products such as O3 which would leave lower concentration with fast natural diffusion.No CO by-products were detected.