Ju Joon-Hyung, Lee In-Seok, Sim Won-Jin, Eun Heesoo, Oh Jeong-Eun
Department of Civil and Environmental Engineering, Pusan National University, Busan 609-735, Republic of Korea.
Chemosphere. 2009 Jan;74(3):441-7. doi: 10.1016/j.chemosphere.2008.09.059. Epub 2008 Nov 5.
The concentrations of 12 POPs listed in the Stockholm convention, chlorophenols (CPs) and PAHs were investigated in sludge samples from wastewater and sewage treatment plants (WWTPs and STPs). The concentrations of PCDD/Fs in the wastewater sludge ranged from 0.189 to 1092 ng-TEQkg(-1) dry wt., and most of the sludge samples had levels below the EU guideline for the land application of PCDD/Fs (<100 ng-TEQkg(-1) dry wt.) except one sample. Co-PCB congeners were analyzed from four WWTPs, with total concentrations ranging from 0.265 to 26.6 ng-TEQkg(-1) dry wt., which were similar to the results obtained from previous studies. The levels of PCDD/Fs and Co-PCBs varied according to the main source of the influent to each WWTP and the paper industry was the main source of these compounds in the sludge due to the chlorine bleaching process. In case of OCPs, HCB and p,p'-DDE were detected at relatively high levels in the sludge samples compared to other target compounds, ranging from 1.30 to 21.5 microg kg(-1) dry wt. and 0.758 to 14.8 microg kg(-1) dry wt., respectively. Different OCP distribution patterns were observed according to sludge types, with HCB and DDTs being dominant in the sludge from WWTPs and STPs, respectively. The total levels of PAHs and CPs ranged from 1.24 to 44.9 mg kg(-1) dry wt. and 0.340 to 3.85 mg kg(-1) dry wt., respectively. The PAHs and CPs were also shown to have various distribution patterns, possibly due to the different wastewater sources to the WWTPs.
对来自废水和污水处理厂（WWTPs和STPs）的污泥样本中《斯德哥尔摩公约》列出的12种持久性有机污染物、氯酚（CPs）和多环芳烃（PAHs）的浓度进行了调查。废水污泥中多氯二苯并对二恶英/多氯二苯并呋喃（PCDD/Fs）的浓度范围为0.189至1092纳克毒性当量/千克干重，除一个样本外，大多数污泥样本的含量低于欧盟关于PCDD/Fs土地施用的指导值（<100纳克毒性当量/千克干重）。对四个污水处理厂的共平面多氯联苯（Co-PCBs）同系物进行了分析，总浓度范围为0.265至26.6纳克毒性当量/千克干重，这与先前研究的结果相似。PCDD/Fs和Co-PCBs的含量因每个污水处理厂进水的主要来源而异，由于氯漂工艺，造纸工业是这些化合物在污泥中的主要来源。就有机氯农药（OCPs）而言，与其他目标化合物相比，六氯苯（HCB）和p,p'-滴滴伊（p,p'-DDE）在污泥样本中的检测水平相对较高，分别为1.30至21.5微克/千克干重和0.758至14.8微克/千克干重。根据污泥类型观察到不同的OCP分布模式，HCB和滴滴涕分别在污水处理厂和污水净化厂的污泥中占主导地位。多环芳烃和氯酚的总含量分别为1.24至44.9毫克/千克干重和0.340至3.85毫克/千克干重。多环芳烃和氯酚也显示出各种分布模式，这可能是由于污水处理厂的废水来源不同。
