摘要
磷肥厂的工业废水经石灰乳沉淀静置后氟化物浓度仍不合排放要求,必须进行二级处理。本文报导,在pH=6.80—7.20的条件下,用Al_2(SO_4)_3混凝除氟,当废水中氟化物浓度达到排放标准时,Al2_(SO_4)_3用量与废水中氟化物浓度的关系可用数学模型,Y=-0.2147+0.03478X-7.996×10^(-6)X^2来描述。
After lime treatment the industrial wastewater in the phosphatefertilizer factories still has too high concentration of fluoride to be drai-ned.The wastewater needs further treatment.This treatise reports howat pH=6.80-7.20,Al_2(SO_4)_3 removes fluorides by coagulation.When theconcentration of fluorides in wastewater is lowered to drainage standard,the relationship between the used amount of Al_2(SO_4)_3 and the concentra-tion of fluorides in the wastewater can be described by a mathematicalmodel.Its specific form is Y=-0.2147+0.03478X-7.996×10^(-6)X^2.
出处
《水处理技术》
CAS
CSCD
北大核心
1992年第2期96-101,共6页
Technology of Water Treatment
关键词
硫酸铝
废水
除氟
数学模型
aluminum sulfate
wastewater
removal of fluorine
mathematical model
