絮凝技术用于高有机物海水预处理的研究  

Study on Treatment of High Organic Seawater by Flocculation

作　　者：闫会 张岩 李风琪 黄泽鑫 齐本坤[2] 宋伟杰[2] 沈飞[2] 万印华[2] 

机构地区：[1]沧州临港中科保生物科技有限公司,河北沧州061100 [2]中国科学院过程工程研究所生化工程国家重点实验室,北京100190

出　　处：《广东化工》2016年第23期56-57,55,共3页Guangdong Chemical Industry

基　　金：河北省重点研发计划项目(16273103D)

摘　　要：为了将盐田海水用作海水淡化水源,针对高有机物海水的预处理进行了烧杯絮凝实验,考察了絮凝条件、絮凝剂和助凝剂等参数对絮凝效果的影响。结果表明,最佳絮凝条件为:快速搅拌350 r/min、3 min,慢速搅拌80 r/min、8 min,沉淀时间30 min。聚合氯化铝铁去除浊度效果最好,在添加量为100 mg/L时,去除率达到85.37%;聚合硫酸铁去除COD效果最好,在同样添加量下,去除率为43.63%;而三氯化铁去除二者的效果均处于中间水平。骨胶和聚丙烯酰胺(PAM)均可以提高絮凝效果,其中PAM效果略好,在三氯化铁40 mg/L时,添加1 mg/L的PAM可使浊度和COD的去除率分别提高8.23%和8.10%。In order to investigate the feasibility of saltern seawater being used as source water for desalination, a beaker flocculation test was conducted for high organic seawater. The effect of flocculation conditions, flocculants and coagulants on flocculation process had been investigated. The results show that the optimum conditions for flocculation were high stirring speed and time being 350 r/min and 3 min, low stirring speed and time being 80 r/min and 8 min, settling time being 30 min. Turbidity removal effect of PAFC was best with the removal rate of 85.37 % in the dosage of 100 mg/L; COD removal effect of PFS was best with the removal rate of 43.63 % in the same dosage; removal effects of Fe Cl3 on both were in the middle levels. The flocculation effect could be improved by bone glue or PAM, but PAM was slightly better. When Fe Cl3 was 40 mg/L and PAM was 1 mg/L, the removal rates of turbidity and COD were increased by 8.23 % and 8.10 %, respectively.

关 键 词：海水淡化 有机物 预处理 絮凝 

分 类 号：TQ028.3[化学工程]