粉末活性炭应急处理水源石油类污染的试验研究

A test of emergency treatment of petroleum pollution in source water by powder activated carbon

针对城市水源可能突发的水体石油类含量超标,以小试试验为基础,模拟珠江广州段西航道水源石油类超标进行城市供水应急处理试验研究。结果表明:在原水中石油类含量超标约3倍时,给水厂常规工艺与粉末活性炭吸附单独处理两者效果均不理想,而在原有常规工艺前投加粉末活性炭进行吸附预处理,FeCl3投加量60mg/L,活性炭投加5mg/L,吸附10min条件下,石油类去除率达75.5%,处理后出水石油类的质量浓度低于0.05mg/L,可达地表水环境质量Ⅲ类标准。

In view of the petroleum pollution that may suddenly happen in urban water source, a pilot test of emergency treatment of urban water supply system was studied through simulating the petroleum pollution in west channel of Pearl River in Guangzhou section. The results showed that, when the concentration of petroleum in the raw water exceeded the state value by about 3 times, the treatment effect by conventional process and powder activated carbon adsorption were both not good enough. However, added powder activated carbon before the conventional process for the adsorption pretreatment, the removal rate of petroleum reached 75.5%, the mass concentration of petroleum in the effluent water was lower than 0.05 mg/L under the condition that, the dosage of FeC13 and activated carbon were 60 and 5 mg/L respectively, the adsorption time was 10 min, the water quality met the class m standard of environmental quality for surface water.