摘要
以延河沉积物和采油废水为对象 ,实验研究了河流沉淀物对石油类污染物的吸附以及污染沉积物中该类污染物的释放规律。结果表明 ,当河流沉积物浓度在 2 0～ 2 0 0kg/m3,排放废水含油浓度为 1 55 7mg/L时 ,水相中石油的吸附平衡浓度可高达 70～ 5mg/L ;实验条件下污染沉积物中石油类在水相中的平衡释放浓度为 1 0mg/L左右 ;相同污染负荷下 ,含油废水直接排放 (吸附后 )对河流水质造成的污染要比污染沉积物中石油类的释放产生的污染更为严重 ,不过后者污染的作用周期要比前者长得多。
An experimental study has been made of the petroleum pollutant's adsorption on and desorption from the river sediments of Yanhe River ——a branch of the Yellow River. The results show that adsorption equilibrium concentration of oil can highly maintain at 70～5mg/L when the suspended sediment concentration is from 20 to 200kg/m 3, and the oil concentration in the discharged wastewater is given at 155.7mg/L. And about 10mg/L of oil is released from the petroleum contamination river sediments experimental conditions. Direct discharge of wastewater to the river (after adsorbed by the sediments) can cause a heavier oil pollution to the river water than the desorption of oil from the contaminated sediments under the same oil load. But the polluting period to the river water of the latter case will act much longer than that of the former one.
出处
《环境工程》
CAS
CSCD
北大核心
2000年第3期59-61,共3页
Environmental Engineering
基金
国家自然科学基金! ( 5970 80 0 5)
国家环保总局科技发展计划资助! ( 971 0 7)项目
