PDF
摘要
采用介质阻挡放电产生低温等离子体的方式处理乳化废液,旨在探究等离子体处理该类废液的规律。系统研究放电时长、峰值电压、废液初始浓度和无机盐种类等因素对化学需氧量(COD)降解率和浊度去除率的影响规律。结果表明:废液初始浓度与处理效果呈负相关、加入无机盐有助于提升处理效果;增加放电时长、增大峰值电压有利于废液处理。通过正交试验确定影响乳化切削废液COD降解率因素的主次顺序为:放电时长(C)>峰值电压(B)>乳化废液初始浓度(A)>无机盐种类(D)。即按照1∶200配制的乳化废液,添加0.3000g无水氯化钙,放电峰值电压为30kV,放电时长为4h,COD降解率最好。经过实验验证,此时乳化切削废液COD降解率达87.46%。影响乳化切削废液浊度去除率因素的主次顺序为:峰值电压(B)>无机盐种类(D)>乳化废液初始浓度(A)>放电时间(C)。即按照1∶200配制的乳化切削废液,加入0.3000g无水氯化钙,放电峰值电压为35kV,放电时长为3.5h,浊度去除率最优。经过实验验证,此时乳化废液浊度去除率93.12%。本研究为乳化废液净化提供了一定借鉴。
Abstract
Non-thermal plasma generated by dielectric barrier discharge (DBD) was applied to treat emulsified waste liquid.The purpose was to explore purification law of emulsion waste liquid by non-thermal plasma.The influence rule of discharge duration,peak voltage,initial concentration of waste liquid,inorganic salts on COD degradation rate and turbidity removal rate was investigated.It was found that the initial concentration of waste liquid was negatively correlated with the treatment effect.Adding inorganic salt could improve the treatment effect.Increasing discharge time and peak voltage were beneficial to waste liquid treatment.Through orthogonal test,the factors affecting the COD degradation rate of emulsified waste liquid were determined as follows:discharge duration >peak voltage>initial concentration of waste liquid>inorganic salts.The COD highest removal rate of emulsified waste liquid reached 87.46%,when the optimal conditions were as follows:the emulsified cutting waste liquid was prepared according to 1∶200.Adding 0.3000g anhydrous calcium chloride,discharge voltage 30kV,discharge time 4h.Through orthogonal test,the factors affecting the turbidity removal rate of emulsified waste liquid were determined as follows:peak voltage>inorganic salts>initial concentration of waste liquid >discharge duration.The turbidity highest removal rate of emulsified waste liquid reached 93.12%,when the optimal conditions were as follows:The emulsified cutting waste liquid was prepared according to 1∶200.Adding 0.3000g anhydrous calcium chloride,discharge voltage 35kV,discharge time 3.5h.This research provided some basic datas and new theoretical basis for the purification of emulsified waste liquid.
关键词
低温等离子体
/
放电电压
/
乳化废液
/
化学需氧量降解率
/
浊度去除率
Key words
non-thermal plasma
/
discharge voltage
/
emulsified waste liquid
/
COD degradation rate
/
turbidity removal rate
低温等离子体净化处理乳化废液工艺研究[J].
化工新型材料, 2021, 49(1): 251-254 DOI:10.19817/j.cnki.issn 1006-3536.2021.01.055
[1] 李菊萍.破乳—氧化—吸附法处理高浓度乳化含油废水的研究[D].镇江:江苏大学,2009.
[2] 江代胜.乳化废液处理新工艺及其应用[J].化学工程与装备,2019(2):274-276.
[3] 张笑维.乳化液废水处理工艺过程优化研究[D].大连:大连交通大学,2018.
[4] 付丽丽,周思彤,祝雷.微电解-絮凝预处理含油乳化废水的实验研究[J].工业水处理,2014,34(4):44-46.
[5] 梁建华.含石油类废水处理工艺[J].环境工程,2014,32(S1):194,231-233.
[6] 林明.机械加工乳化油废水处理工艺及应用研究[D].长春:吉林大学,2010.
[7] Rong Junfeng,Zhu Kaixun,Chen Minggong.Study on purification technology of polyacrylamide wastewater by non-thermal plasma[J].Plasma Sci Technol,2019,21(5):054008.
[8] 屈广周,李杰,梁冬丽,等.低温等离子体技术处理难降解有机废水的研究进展[J].化工进展,2012,31(3):662-670.
[9] 王保伟,董博,刘震,等.非平衡等离子体降解废水中有机污染物研究进展[J].环境工程学报,2015,9(10):4613-4622.
[10] Rong Junfeng,Zhu Kaixun,Chen Minggong.Study on purification technology of polyacrylamide wastewater by non-thermal plasma[J].Plasma Sci Technol,2019,21(5):054008.
[11] 盛楠,陈明功,孙逸玫,等.低温等离子体协同填料床吸附净化甲醇废水[J].化工学报,2017,68(6):2546-2554.
[12] 陈明功,齐永涛,张鑫敏,等.低温等离子体与絮凝剂处理印染废水的协同效应[J].中国环境科学,2010,30(9):1207-1212.
[13] 陈明功,荣俊锋,余东旭,等.DBD反应器中催化剂颗粒直径对放电功率的影响[J].高校化学工程学报,2012,26(5):889-894.
基金资助
国家级大学生创新创业训练计划项目(202010361079);安徽理工大学青年基金项目(12661)
