摘要
为应对可能出现的钴污染风险,通过混凝搅拌试验,研究了聚合硫酸铁(PFS)应急处理水源水钴污染的最佳条件及最大应对能力。结果表明,混凝剂PFS和助凝剂PAM的最佳投量分别为20、0.5~0.8 mg/L。当处理钴污染浓度分别为<5、5~10、11~110 mg/L的原水时,可在混凝前将原水的p H值分别调为9.2、9.6、>9.8,经混凝沉淀、砂滤处理后出水钴浓度可以达标(钴<1.0 mg/L)。PFS对钴污染的处理能力可达111.95 mg/L,满足应急处理的要求。
In order to cope with the possible risk of cobalt pollution, the optimal condition and the maximum removal capacity for emergency treatment of cobalt polluted source water were investigated through coagulation experiment where polymeric ferric sulfate （PFS） was employed as coagulant, The re- sults showed that the optimum dosage of PFS and PAM was 20 mg/L and 0.5 - 0.8 mg/L respectively. When the cobalt concentration was less than 5 rag/L, 5 - 10 mg/L and 11 - 1 i0 mg/L respectively, pH of the source water was adjusted to about 9.2, 9.6 and high than 9.8 before coagulation, and the effluent water quality could meet requirements of Environmental Quality Standards for Su（face Water （ Co 〈 1.0 mg/L） after coagulation and sand filtration. The maximum treatment capacity of cobalt by PFS was 111.95 rag/L, which could meet the requirement of emergency treaJm^nt
出处
《中国给水排水》
CAS
CSCD
北大核心
2017年第23期138-140,共3页
China Water & Wastewater
关键词
水源水
钴
聚合硫酸铁
应急处理
source water
cobalt
polymeric ferric sulfate
emergency treatment
