摘要
重金属引起的给水污染是威胁人体健康的元凶首恶之一,也为传统给水处理工艺提出更大的挑战。本文以强化混凝沉淀的方法处理铬、镉复合污染的水源水,旨在通过优化原工艺应对突发污染。研究表明,针对铬和镉的初始污染浓度分别为0.170 0 mg/L和0.030 0 mg/L的复合污染水源水,采用分段工艺,只需在原水的p H值的条件下,投加混凝剂(Fe Cl3)20.0 mg/L,混凝剂(PAFC)的投加量为2 mg/L,出水即可以达到国家出水标准。处理过程模拟水厂现有工艺,无需新增设备,易于操作。
Heavy metal plays a significant role in water pollution,brining great challenges to traditional supply watering process. The hexavalent chromium and Cadmium from raw water was removed by strengthened coagulation,aiming at coping with breaking emergency. This study treated water with initial cadmium and chromium concentration of 0. 170 0 mg / L and 0. 030 0mg / L respectively,when p H stays at the original value,Fe Cl3 for the first stage was 20. 0mg / L,PAFC dosage in the second was2. 0mg / L. The concentration of both pollutants presented in the initial water were lower than the limits of national standards. This process simulates the existing process of water plants,without additional equipment and easy to operate.
出处
《环境科学与管理》
CAS
2016年第2期73-77,共5页
Environmental Science and Management
基金
广东省科技计划项目(2012A032300018)
关键词
复合污染
强化混凝
应急处理
分段工艺
composite pollution
strengthened coagulation
emergency treatment
segmentation process
