摘要
针对合流制泵站溢流污水的特点,通过与传统工艺处理效果对比,采用磁絮凝法进行处理,即在投加絮凝剂的同时投加磁种,并引入磁场来促进絮凝过程。从磁种投加量、磁种-絮凝剂投配比、磁感应强度、pH和沉降时间等方面研究磁絮凝法处理泵站溢流污水的优越性。结果表明,当磁种投加量为250 mg.L-1、絮凝剂投加量为2.5 mL.L-1、磁感应强度为50 mT、pH为6时处理效果最好。采用磁絮凝法处理泵站溢流污水降低了絮凝过程中的沉降时间,节约了成本。
According to the characteristics of pumping overflow sewage in combined system,through the comparison of effect with the traditional process,introducing magnetic flocculation process,namely hair in adding a magnetic flux while adding flocculants,and magnetic was introduced to promote flocculation process.From a dosing quantity,the optimum proportion of magnetic and flocculation,the magnetic field strength,pH and flocculation time to study the superiority of magnetic flocculation treatment of sewage.The results showed that,when a dosing quantity for the magnetic was 250 mg·L-1,as for flocculation 2.5 mL·L-1,field strength 50 mT,pH=6,the treatment achieved the best.What was more,using magnetic flocculation to handle pumping overflow sewage,subsidence time of flocculation process can be reduced,so it cost much less.
出处
《水处理技术》
CAS
CSCD
北大核心
2011年第6期38-40,49,共4页
Technology of Water Treatment
基金
国家"十一五"重大水专项资助项目(2008ZX07317-001)
江苏省社发项目(BE2008615)
关键词
磁絮凝
泵站
溢流污水
合流制
magnetic flocculation
pumping station
overflow sewage
combined system
