摘要
在常规混凝工艺确定的最佳处理条件下,考察了单独高锰酸钾(KMnO4)和次氯酸钠(NaClO)预氧化、单独投加粉末活性炭(PAC)以及KMnO4和PAC联用对混凝处理东太湖原水的强化效果。结果表明,聚氯化铝和硫酸铝的最佳投加量分别为20mg/L和30mg/L,聚氯化铝的混凝效果明显优于硫酸铝;投加KMnO4对浊度、CODMn和UV254的去除均有一定程度提高,但不利于原水氨氮的去除;投加PAC有显著的强化混凝作用,各指标去除率均有所提高;KMnO4和PAC联用能进一步提高水中UV254的去除率;预氧化大大提高了混凝对氨氮的去除效果,投加1mg/L NaClO对氨氮去除率可达100%。
The effect of enhanced coagulation for East Taihu Lake water combined with potassium per-manganate （KMnO4）, powder activated carbon （PAC） and sodium hypochlorite （NaC10） in the optimaltreatment conditions determined by conventional coagulation were studied. The results show that optimaldosages of polymerization aluminum chloride and aluminum sulfate are 20 mg/L and 30 mg/L respectively,and the coagulation of polymerization aluminum chloride is superior to aluminum sulfate. The removalrates of turbidity, COD and UV254 are improved by KMnO4 except for ammonia. PAC plays significantroles in promoting the coagulation process and the removal rates of all water quality indexes are relativelyimproved. The combination of KMnO4 and PAC immensely benefits the removal of UV254. The removalrate of ammonia is largely increased through pre-chlorination and 1 mg/L NaC10 is capable of removing al-most all ammonia in the raw water.
出处
《给水排水》
CSCD
北大核心
2014年第9期119-125,共7页
Water & Wastewater Engineering
基金
国家水体污染控制与治理科技重大专项(2012ZX07403-001)
高等学校博士点基金(20120072110050)
国家自然科学基金资助项目(51178321)
住房和城乡建设部研究开发项目(2009-K7-4)
关键词
湖泊水
富营养化
强化混凝
高锰酸钾
粉末活性炭
次氯酸钠
搅拌试验
Lake
Eutrophication
Enhanced coagulation
Potassium permanganate
Activatedcarbon
Sodium hypochlorite
Jar test
