化学沉淀法去除化学镀镍废液中磷的工艺研究  

Study on removal of phosphorus from spent electroless nickel plating bath by chemical precipitation

作　　者：崔作兴 杨晓杰 李学田 邵忠财[2] CUI Zuoxing;YANG Xiaojie;LI Xuetian;SHAO Zhongcai(Automotive Institute,Liaoning Vocational University of Technology,Jinzhou 121007,China;School of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]辽宁理工职业大学汽车学院,辽宁锦州121007 [2]沈阳理工大学环境与化学工程学院,辽宁沈阳110159

出　　处：《电镀与涂饰》2024年第3期150-156,共7页Electroplating & Finishing

基　　金：沈阳市科技计划项目(化学镀镍废液清洁处理及其综合利用技术的研究)(22-322-3-13)。

摘　　要：[目的]对化学镀镍废液中的含磷物质进行正确处理和有效回收是实现可持续发展的有效策略。[方法]采用化学沉淀法处理化学镀镍废液,使其中的磷以羟基磷灰石(HAP)沉淀形式得以回收。研究了反应温度、初始pH及Ca/P比(指硝酸钙与废液中磷的质量比)对磷去除率的影响,通过正交试验优化工艺参数。[结果]在温度为75℃、初始pH为12及Ca/P比为1.67的条件下处理后,化学镀镍废液的磷去除率达到了99.998%,并且所得沉淀为HAP。[结论]采用本工艺可有效去除化学镀镍废液中的磷,并且随之产生的HAP有望得以回收利用。[Introduction]Proper treatment and effective recycling of phosphorus-containing compound in spent electroless nickel plating bath is an effective strategy to achieve sustainable development.[Method]The spent electroless nickel plating bath was treated by chemical precipitation to realize the recyling of phosphorus in the form of hydroxyapatite(HAP).The effects of reaction temperature,initial pH,and Ca/P ratio(i.e.mass ratio of calcium nitrate to phosphorus in spent electroless nickel plating bath)on the removal rate of phosphorus were studied.The process paramters were optimized by orthogonal test.[Result]After being treated at temperature 75°C,intial pH 12,and Ca/P ratio 1.67,the removal rate of phosphrous was up to 99.998%,and the obtained precipitate was HAP.[Conclusion]The phosphrous can be effectively removed from the spent electroless nickel plating bath after being treated by the given method,and the HAP produced during the treatment is expected to be recycled.

关 键 词：化学镀镍废液 化学沉淀法 磷 去除率 

分 类 号：X703[环境科学与工程—环境工程]