摘要
以某光伏企业的高氟含量废水作为研究对象,通过加钙沉淀的方法进行废水的一级除氟,并研究了钙源种类、反应pH、钙源投加量对除氟效果的影响。在最优条件下一级处理可以将废水中F-由520 mg/L处理至15.2 mg/L。后续通过正交实验优化组分配比制备了除氟剂AW-CF,并研究了AW-CF投加量和反应pH对除氟效果的影响,在最优条件下对一级处理得到的上清液进行二级深度除氟。通过二级处理可以使水中F-浓度降低至1 mg/L以下,满足《地表水环境质量标准》 GB3838-2022中I类水的氟化物含量要求。整体工艺流程简单,操作方便,具有广阔的应用前景。
High-fluoride wastewater from a photovoltaic enterprise was focused.Primary defluoridation was achieved via the calcium precipitation method,with the effects of calcium source type,reaction pH,and calcium dosage on defluoridation efficiency being investigated.Under optimal conditions,F-concentration was reduced from 520 mg/L to 15.2 mg/L by the primary treatment.Subsequent orthogonal experiments were conducted to optimize the formulation of a defluoridating agent(AW-CF),followed by the impacts of agent dosage and reaction pH being explored.Secondary advanced defluoridation was performed on the supernatant from the primary treatment under the optimized conditions.F-concentration was successfully lowered to below 1 mg/L by this secondary treatment,which met the fluoride requirement for Class I water specified in GB 3838-2022 Environmental Quality Standards for Surface Water.Overall,operational simplicity and strong application potential were featured by the entire process.
作者
赵佳平
李升军
朱崇兵
ZHAO Jiaping;LI Shengjun;ZHU Chongbing(AQUA Worth(Suzhou)Environmental Protection Co.,Ltd.,Jiangsu Suzhou 215011,China)
出处
《广州化工》
2026年第2期138-141,共4页
GuangZhou Chemical Industry
关键词
光伏废水
深度除氟
混凝沉淀
废水处理
photovoltaic wastewater
advanced defluoridation
coagulating sedimentation
wastewater treatment
