摘要
采用氯化钙沉淀法处理超高浓度含磷废水,考察了氯化钙投加量、pH、反应时间、沉淀时间对除磷效果的影响。结果表明,氯化钙具有很好的除磷能力,在n(Ca)∶n(P)=1.18∶1、pH=9、反应时间为30 min、沉淀时间为30 min的条件下,除磷率可达99.98%,生成的沉淀中磷质量分数在13.68%以上,达到高品位磷矿的水平,可实现超高浓度含磷废水的资源化利用。
Calcium chloride has been used for removing highly concentrated phosphorus from wastewater. The influences of various factors, such as the dosage of calcium chloride, reaction time, pH, precipitation time on the phosphorus removal efficiency are investigated. Calcium chloride has good phosphorus removal capacity. The phosphorus removal rate can reach 99.98% ,when n （Ca）：n（P）=1.18 ：1,reaction time 30 min,pH =9, and precipitation time 30 min. The phosphorus content in the precipitate formed is 13.68% or over, reaching the high purity of phosphorus content in phosphorus ore. The technology is of significant importance for the recycle of wastewater containing ultra-high concentration of phosphorus.
出处
《工业水处理》
CAS
CSCD
北大核心
2011年第1期58-60,共3页
Industrial Water Treatment
关键词
含磷废水
氯化钙
沉淀
phosphorus-containing wastewater
calcium chloride
precipitation
