Organic Pollution Characteristics Of Liaohe River Chemical And Petrochemical Industries And Risk Assessment

ABSTRACT:Taking poisonous and harmful pollutants in waste water of Liao River oil refining、petrochemical and chemical fiber industry as a research object,the toxic pollutant species distribution in the demonstration area tributaries has been monitored and analyzed. Exposure risk investigation and evaluation was lauched. It provides a scientific basis for controlling the Liao River pollution.The main research results are as follows:(1)Phenol compounds are the highest concentrations of organic matter in Fushun Petrochemical Branch Company No.2Petroleum Factory,the concentration of m-Cresol reaches up to367.7mg/L; Phenol compounds and PAEs are the highest concentrations of organic matter in Fushun Petrochemical Co. Acrylic Fiber Chemical Plant,the concentration of m-Cresol reaches up to47.3mg/L.(2) The main pollutants are Phenol compounds and PAEs in Dongzhou River.Their concentration range respectively is9.1μg/L-26.0μg/L and7.3-141.7μg/L; The main pollutants are Phenol compounds and PAHs in Shen Fu canal.Their concentration range respectively is2.4ug/L-119.0μg/L and7.4-65.2μg/L; The main pollutants are Phenol compounds and PAEs in Hunhe River.Their concentration range respectively is5.6μg/L-34.0μg/L and4.5-139.1μg/L(3)Do Correlation analysis to the acception outlet of typical petrochemical and chemical companies a tributary of poisonous and harmful pollutants.There is no obvious correlation in poisonous and harmful pollutants between Oil factory outlet and dongzhou river sampling point. They are not likely to have a common source. It has significant correlation between outlet of acrylic fibers factory and dongzhou river D2sampling points at p<0.01level,and has significant correlation between D4and D5sampling point at P<0.05level. outlet of acrylic fibers factory it has better Corresponding to that Shen Fu irrigation system of nitrogen heterocyclic substances has high concentration at D4and D5.It significant correlation between outlet of acrylic fibers factory S5and Shun fu irrigation system S6at p<0.01. There is a strong source response relationshipwith the sewage water outlet of JingGuanChang Shen Fu irrigation system.(4)Shen Fu canal polycyclic aromatic hydrocarbons by way of drinking water. Each sampling point of total health in a maximum value at risk for cancer,it is1.1×10-4 a-1,the average value is3.6×10-5a-1,it is higer than ICRP recommended maximum acceptable risk level5.0x10-5a-1.Each sample point Dongzhou river total health risk of cancer in a maximum value of7.89x10-6a-1, With a mean of2.71x10-6a-1. HunHe of each sample point in total health risk in a maximum value of4.71x10-6a-1, with a mean of2.19x10-6a-1they are all less than5.0x10-5a-1. By every river all sampling points to the value method to calculate the risk of PAHs commercial value is far less than1.