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闫晓涛, 李 杰, 冯淑琪, 李玉皎.响应面法优化混凝处理黄河兰州段低温低浊水水资源与水工程学报[J].,2018,29(6):68-74
响应面法优化混凝处理黄河兰州段低温低浊水
Optimization of coagulation treatment of low-temperature and low-turbidity water in Lanzhou section of the Yellow River by response surface method
  
DOI:10.11705/j.issn.1672-643X.2018.06.10
中文关键词:  低温低浊水; 响应面法; 混凝工艺; 污染物去除  黄河兰州段
英文关键词:low temperature and low turbidity water  response surface method  coagulation method  pollutants removal  Lanzhou section of Yellow River
基金项目:国家重点研发项目(2016YFC0400705)
作者单位
闫晓涛1, 李 杰1,2, 冯淑琪2, 李玉皎2 (1.兰州城市供水(集团)有限公司 甘肃 兰州 730060 2.兰州交通大学 环境与市政工程学院 甘肃 兰州 730070) 
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中文摘要:
      为进一步提高混凝法对冬季黄河兰州段低温低浊水中浊度、有机物、氨氮的去除效果,采用响应面 Box-Behnken 的中心组合设计方法,研究了混凝剂(PFAC)投加量、助凝剂(PAM)投加量、絮凝转速与絮凝时间及其交互作用对浊度、高锰酸盐指数(CODMn)和氨氮去除率的影响。结果表明:混凝法的最佳控制参数为混凝剂投加量7.87 mL、助凝剂投加量6.06 mL、絮凝时间37 min、絮凝转速90 r/min。在此最佳反应条件下,浊度、高锰酸盐指数、氨氮去除率分别为16.3%、19.7%、14.7%。混凝出水再经砂滤后,出水浊度为0.76 NTU、CODMn为2.72 mg/L、氨氮为0.44 mg/L,达到了生活饮用水水质标准(GB5749-2006)。研究结果为兰州城市供水(集团)有限公司处理工艺升级改造提供了技术支持。
英文摘要:
      n order to improve the removal efficiency of turbidity, organic matter (CODMn), and ammonia nitrogen in the low temperature and low turbidity water of the Yellow River in Lanzhou by the coagulation method, the Box-Behnken's center combination design method was used to study the effects of PFAC coagulant dosage, PAM coagulant dosage, flocculation speed and flocculation time and their interactions on turbidity removal, permanganate index removal, and ammonia nitrogen removal. The results show that the best removal conditions of turbidity, organic matter and ammonia nitrogen are as follows: PFAC Coagulant dosage 7.87 mL, PAM coagulant dosage 6.06 mL, flocculation time 37 min, flocculation speed 90 r/min, respectively. Under the optimal conditions, the removal efficiencies of turbidity , CODMn and ammonia nitrogen were 16.3%, 19.7%, and 14.7% , respectively. The turbidity is 0.76 NTU, the permanganate index is 2.72 mg/L, and the ammoniacal nitrogen is 0.44 mg/L after the coagulated effluent was filtered through sand. which suggest that the effluent can meet the “Standards for Drinking Water Quality” (GB 5749-2006). The research results provide technical support for the upgrade and reconstruction of the treatment process of Lanzhou City Water Supply (Group) Co., Ltd.
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