【摘要】 采用混凝-光催化技术对海水进行预处理.实验结果表明:当温度为10～25℃、pH为7.0～8.0、FeCl3投加量为2.5mg/L、聚丙烯酰胺(PAM)投加量为0.75mg/L时,海水中浊度去除率为96%;以纳米TiO2为催化剂进行光催化氧化,当光催化剂用量为1.8g/L、反应2.5h时,化学需氧量(COD)降解率为99.58%.混凝与光催化协同作用,可使海水中浊度及有机物均达到反渗透的进水水质要求.更多还原

【Abstract】 Coagulation-photocatalytic technology was used to pretreat seawater.The results show that at a temperature of 10—25 ℃,pH 7.0—8.0,2.5 mg/L FeCl3,0.75 mg/L PAM,water turbidity removal rate was as high as 96%.When nano-TiO2 catalyst was uesd for the photocatalytic oxidation of organic compounds in seawater in an amount of 1.8 g/L for a light reaction time of 2.5 h,the degradation rate of COD was up to 99.58%.Synergistic effect between coagulation and photocatalytic oxidation eventually made effluent water meet the requirements of RO.更多还原