强化混凝法去除废水中超微细颗粒物

设计了一套动力学模拟装置，研究了有机高分子絮凝剂ＣＧ－Ａ与无机高分子凝剂ＰＡＣ配合去除油田含油废水中超微细颗粒（〈５μｍ），该装置由旋流混合器、流态化沉淀塔、沙滤池组成，处理能力为２００Ｌ／ｈ，当单独投加ＰＡＣ时，出水的微细颗粒数为６８０００个／Ｌ，滤膜系数为１３～１６，而ＰＡＣ与ＣＧ－Ａ配合使用时，出水的微细颗粒数为１１０００个／Ｌ，滤膜系数为４０～６０，显示ＣＧ－Ａ和流化床沉淀塔具有良好的去除

Removal of Superfine Particulates From Wastewater by Enhanced Flocculation

In this research, polyaluminium chloride(PAC) and natural organic flocculant CG-A were applied tOremove superfine particulates (less than 5 μm) from oil field wastewater in a dynamic simulating device which consisted of spiral-flow mixer, fluidized sedimentation tower and sand filter. The device could dispose 200 liters of wastewater per hour and the mechanisms of flocculation were studied. When PAC and CG-A were used synergistically, the number of total particulates of final effluent was 11000 per liter, membrane factor (MF) value was 40～60, however, in a similar way except that CG-A was omitted, the twOvalues of disposed wastewater were 68000 and 13～16 respectively. The experiment results showed that CG-A and fluidized sedimentation tower were very efficient in removing superfine particulates from water.