化学沉淀法处理电镀废液中总磷的实验研究  

Experimental Study on the Treatment of Total Phosphorus in Electroplating Wastewater by Chemical Precipitation Method

作　　者：刘伟 

机构地区：[1]吉林市环境监测站,吉林吉林132012

出　　处：《广东化工》2016年第16期142-143,共2页Guangdong Chemical Industry

摘　　要：汽车工业的快速发展产生了大量的磷含量较高的电镀废液,采用氟化钠和氢氧化钙为沉淀剂,去除汽车电镀废液中的总磷。考察了氟化钠投加量、氢氧化钙投加量,p H、反应温度及反应时间对磷去除效果的影响。研究表明:溶液p H为8.0、温度为20℃时,向50 m L废磷化液中投加0.42 g的氟化钠和1.85 g氢氧化钙反应1 h后,磷去除率达到99.5%,处理后的废水满足《污水综合排放标准》(GB8978-2012)的二级标准要求。The rapid development of automobile industry produced large amounts of high phosphorus electroplating wastewater. Use sodium fluoride and calcium hydroxide as precipitant to removal the total phosphorus of the electroplating wastewater. Effects of sodium fluoride dosage, calcium hydroxide dosage, the pH, reaction temperature and reaction time were investigated by removal effect of phosphorus. The study showed that the appropriate condition was pH 8.0, the temperature 20℃, to 50 mL waste electroplating wastewater dosing 0.42 g sodium fluoride and 1.85 g calcium hydroxide reaction 1 h, the phosphorus removal rate reached 99.5 %, the treated wastewater meet the ＂integrated wastewater discharge standard＂（GB8978-2012）secondary standard requirements.

关 键 词：电镀废液 磷 化学沉淀 

分 类 号：X505[环境科学与工程—环境工程]