二级处理出水中有机物的分级特性  

Characteristics of organic matter in secondary effluent

作　　者：薛爽[1] 赵庆良[1] 魏亮亮[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院

出　　处：《哈尔滨工业大学学报》2008年第8期1208-1213,共6页Journal of Harbin Institute of Technology

基　　金：国家重点基础研究发展规划项目(973-2004CB418505)

摘　　要：为研究二级出水中有机物的化学特性,以哈尔滨市W污水处理厂为研究对象,利用XAD树脂将二级处理出水中的有机物分级为5个组分:疏水性有机酸(HPO-A)、疏水性中性有机物(HPO-N)、过渡亲水性有机酸(TPI-A)、过渡亲水性中性有机物(TPI-N)和亲水性有机物(HPI).采用氯化反应实验、可生物降解溶解性有机碳和尺寸分布测定,以及紫外和红外光谱分析考察二级处理出水中不同有机组分的特性.结果表明:HPO-A是加氯消毒时产生三卤甲烷的主要有机组分.各有机组分中,溶解性有机碳(DOC)(<0.025μm)均是主要的有机碳形式和主要的三卤甲烷前体物.各组分的可生化性为:HPI>TPI-A>HPO-A>TPI-N>HPO-N.各组分的芳香性为:HPO-N>HPO-A>TPI-N>TPI-A>HPI.HPO-N和TPI-N中碳氢化合物的含量较高.在二级处理出水中,HPO-A和HPI的含量相对较高,是主要的有机组分.此外,不同有机组分的化学特性不同.In order to investigate the chemical characteristics of organic matter in secondary effluent, the organic matter in secondary effluent from the W Wastewater Treatment Plant in the city of Harbin was fractionated into 5 fractions using XAD resins ： hydrophobic acid （ HPO-A）, hydrophobic neutral （ HPO-N）, transphilic acid （ TPI-A）, transphilic neutral （TPI-N） and hydrophilic fraction （HPI）. The characteristics of different organic fractions in secondary effluent were examined by chlorination reaction experiments, biodegradable organic carbon tests, size distribution tests, ultraviolet （UV） and Fourier-transform infrared （FT-IR） spectra analysis. The results show that HPO-A is the main precursor for trihalomethanes （THMs） following chlorination. In each organic fraction, the dissolved organic carbon （DOC） （ 〈0. 025 μm） is the major carbon fraction, in terms of the contribution to organic carbon and THMs. The biodegradability can be ranked as follows： HPI 〉 TPI-A 〉 HPO-A 〉 TPI-N 〉 HPO-N, while the order of aromaticity is as follows： HPO-N 〉 HPO-A 〉 TPI-N 〉 TPI-A 〉 HPI. HPO-N and TPI-N are enriched in hydrocarbon. The contents of HPO-A and HPI are relatively high, and they are main organic fractions in secondary effluent. In addition, the characteristics of different organic fractions arc distinct.

关 键 词：有机物 分级 可生化性 三卤甲烷生成势 三卤甲烷生成活性 

分 类 号：X3[环境科学与工程—环境工程] X5