污水处理厂及其纳污水体中挥发性有机物

Volatile Organic Compounds from Wastewater Treatment Plant and River Water

采用吹扫-捕集和气相色谱/质谱检测器(GC/MS)检测了污水、处理后的污水和河体的水样中的54种挥发性有机物(VOCs)。结果表明:其浓度均低于1μg/L;方庄总进水中挥发性有机物的含量较高,浓度为846ng/L;活性污泥对挥发性有机物去除效果明显,而混凝和石灰沉淀法深度处理工艺对几类挥发性有机物无明显去除效果;出水满足2002城镇污水处理厂污染物排放标准规定限值,河体中挥发性有机物的浓度低于我国地表水水质标准(GB3838-2002)。

Fifty-four kinds of volatile organic compounds(VOCs) were investigated in waste waters,treated waste waters and river waters with purge-trap concentrator,high-resolution gas chromatography and mass spectrometry.The results showed that the concentrations of 54 volatile organic compounds(VOCs) were lower than 1 μg/L respectively.The input wastewater in Fangzhuang wastewater plant had higher concentration of VOCs which reached 846 ng/L.The actived sludge had good removal effect to volatile organic compounds.But the advanced flocculation and lime sedimentation treatment had little effect on VOCs.The final effluent of wastewater treatment plants met the 2002 discharge standard of pollutants for municipal wastewater treatment plant.The concentration of VOCs of the river water was lower than that of the surface water standard.