高密度混凝澄清技术用于海水淡化预处理工艺的试验研究  

TEST STUDY ON USING HIGH-DENSITY COAGULATION SEDIMENTATION TECHNOLOGY INTO PRETREATMENT PROCESS OF SEAWATER DESALINATION

作　　者：王正江[1] 李亚娟[1] 毛进[1] 余耀宏[1] 李卫[1] 

机构地区：[1]西安热工研究院有限公司,陕西西安710032

出　　处：《热力发电》2012年第5期92-94,98,共4页Thermal Power Generation

摘　　要：将高密度混凝澄清技术应用于海水淡化的预处理工艺,并建立了中试装置,考察混凝剂量、污泥回流比及流量对混凝效果的影响。结果表明:当流量为2m3/h、混凝剂量为25mg/L、助凝剂量为0.15mg/L、污泥回流比为30%时,平均出水浊度为10NTU,除浊率达到94%以上;增大污泥回流比能够有效降低出水浊度;相对于微涡流混凝工艺,高密度混凝工艺出水浊度较低,出水水质较稳定,耐冲击负荷能力强。In order to use process of seawater desa high- density coagulation sedimentation technology into the pretreatment lination, a pilot test facility has been established, the influence of coagulant dosage, sludge recirculation rate and flow rate upon coagulation effectiveness being investigated, results show that as in the following：when the flow rate was 2 m^3/h,the dosage of coagulant was 25 mg/L, the dosage of coaglant was 25 mg/L,the dosage of coagulant aid was 0. 15 mg/L,and the sludge recir- culation rate was 30% ,the average turbidity of effluent water can be reduced to 10 NTU,the turbidity removal rate being more than 94% ;increasing the sludge recirculation ratio can evidently decrease the tubidity of effluent water;compared with the micro- whirling coagulation technology, the turbidity of effluent water in high -density coagulation technology was lower, the quality of effluent water was sta- bler, and the impulse load resistant ability was strong.

关 键 词：海水淡化 预处理 高密度混凝澄清 污泥回流比 微涡流混凝澄清 

分 类 号：TM621.8[电气工程—电力系统及自动化]