摘要
以船舶废水为研究对象,采用双项预处理和CASS池处理组合工艺对其进行处理,重点考察了聚合氯化铝和聚合氯化铁用量对废水中的油相去除效果的影响,以及由高浓度COD和高盐度引起的活性污泥生物相演替规律。结果表明,当聚合氯化铝为0.25mg.L-1,聚合氯化铁的投量为2mg.L-1时对石油类的去除效果最好,此时石油类的浓度可降至22.71mg.L-1。CASS池能够在满负荷工况下实现稳定运行,出水COD、BOD和石油类分别为40~85mg.L-1,14~20 mg.L-1和4~6 mg.L-1时,对COD和石油类的去除率分别高达87%和98%以上。
Ship wastewater was treated by dual pre-processing and CASS pool combined process.The effect of amount of PAC and ferric chloride on oil removal efficiency in wastewater was investigated,as well as the activated sludge biological succession laws caused by the concentration of COD and high salinity.The results showed that when the PAC was 0.25 mg/L,the polymerization of ferric chloride of dosageis was 2mg/L,the removal of the oil was the best,and the oil concentration could be reduced to 22.71 mg/L.The CASS pool could stable operation under full load conditions,the effluent COD,BOD,and oil respectively were 40~85mg/L,14~20mg/L and 4~6mg/L,the removal rate of COD and oil was up to 87% and 98% respectively.
出处
《化工技术与开发》
CAS
2012年第7期57-59,共3页
Technology & Development of Chemical Industry
基金
广西教育厅科研项目(200708MS117)
关键词
船舶废水
油水相分离
混凝吸附
CASS
ship wastewater； oil and water separation； coagulation and adsorption； CASS；
