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首页> 外文期刊>Water Practice and Technology >Discfiltration and ozonation for reduction of nutrients and organic micro-pollutants from wastewater – a pilot study
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Discfiltration and ozonation for reduction of nutrients and organic micro-pollutants from wastewater – a pilot study

机译：碟式过滤和臭氧化处理以减少废水中的养分和有机微污染物–一项初步研究

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摘要

The combination of coagulation/flocculation and discfiltration with ozonation to reduce nutrients and organic micro-pollutants in secondary effluent was studied in pilot scale at Lundåkraverket wastewater treatment plant in Landskrona, Sweden. With a chemical dose of 4 gAl3+/m3 and 1.5 g/m3 cationic polymer as active material effluent water quality with regards to total phosphorous (Tot-P), suspended solids and turbidity were 0.03, 2 mg/l and 0.5 Nephelometric Turbidity Units (NTU) in average. The effluent water quality was similar whether ozonation with an applied ozone dose of 2–9 gO3/m3 was performed prior to or after coagulation/flocculation/discfiltration. The results were corresponding to removal efficiencies for the coagulation/flocculation/discfiltration process of 94, 74 and 85% for Tot-P, suspended solids and turbidity, respectively. For organic micro-pollutants removal, it was found to be beneficial to perform coagulation/flocculation/discfiltration prior to ozonation as the ozone requirements were lowered for the dosing intervals applied. The removal was in the range of 38–98% depending on process configuration and ozone dose.
机译：在瑞典Landskrona的Lundåkraverket污水处理厂，以中试规模研究了混凝/絮凝和盘滤与臭氧化相结合以减少次要废水中的养分和有机微量污染物。以4 gAl3 + / m3的化学剂量和1.5 g / m3阳离子聚合物作为活性物质的出水水质，以总磷（Tot-P）计，悬浮固体和浊度分别为0.03、2 mg / l和0.5比浊法浊度单位（ NTU）。无论在凝结/絮凝/分散之前或之后进行臭氧处理，并施加2–9 gO3 / m3的臭氧剂量进行臭氧处理，废水的水质均相似。结果分别对应于Tot-P，悬浮固体和浊度的凝结/絮凝/分散过程的去除效率分别为94、74和85％。对于有机微量污染物的去除，发现在进行臭氧化之前进行凝结/絮凝/分散是有益的，因为在所施加的剂量间隔内降低了臭氧需求。根据工艺配置和臭氧剂量的不同，去除率在38％到98％之间。

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