摘要
银粉加工废水具有高盐、高COD_(Cr)和高氨氮等特点,对环境污染大,且处理难度大。针对某单位的银粉加工废水,采用臭氧催化氧化+MVR蒸发+氨氮吹脱+MBR生化组合工艺对其原有工艺进行改造。结果显示,废水出水水质COD为17 mg/L、氨氮为0.72 mg/L、TDS为601 mg/L、总氮为6.55 mg/L、pH为6~9,出水达到《四川省岷江、沱江流域水污染物排放标准》DB 51/2311-2016水质标准。采用臭氧催化氧化替代芬顿氧化,直接运行费用为71.12元/m~3,比芬顿单元降低157.88元/m~3,危险废物减少791.29 kg/d。该方法具有显著的环境效益和经济效益。
Wastewater from silver powder processing is characterized by high salinity,high COD_(Cr) and high ammonia nitrogen,which cause great environmental pollution and difficult treatment.The original process of silvery powder processing wastewater was modified by ozone catalytic oxidation+MVR evaporation+ammonia nitrogen stripping+MBR biochemical combination process.The results showed that the effluent water quality of COD_(Cr) is 17 mg/L,NH_3-N is 0.72 mg/L,TDS is 601 mg/L,TN is 6.55 mg/L,pH is 6~9.the effluent meets the water quality standard DB51/2311-2016"Water Pollutant Discharge Standard of Minjiang River and Tuojiang River Basin in Sichuan Province".Using ozone catalytic oxidation instead of Fenton oxidation,the direct operation cost is 71.12 yuan/m~3,which is lower 157.88 yuan/m~3 than the Fenton unit,and the hazardous waste is lower791.29 kg/d.This method has remarkable environmental and economic benefits.
作者
何天智
杨红梅
刘星
王利
余波
黄裔童
HE Tianzhi;YANG Hongmei;LIU Xing;Wang Li;YU Bo;HUANG Yitong(Mian Yang Teachers'College,Mianyang 621000,China;School of Architecture and Environment,Sichuan University,Chengdu 610000,China;Sichuan Entech Environment Technology Co.,Ltd.,Mianyang 621000,China;Beijing Construction Engineering Construction Co.,Ltd.,Beijing 100025,China;The University of Melbourne,Carlton 3035,Australia)
出处
《水处理技术》
CAS
CSCD
北大核心
2024年第5期145-148,152,共5页
Technology of Water Treatment
基金
省级科技计划转移支付资金项目-高盐废水超低排放回收技术及装备示范应用与产业化(21ZYZF3004)
教育部产学合作协同育人项目(220605848082234)
关键词
银粉废水
高盐
高COD_(Cr)高氨氮
臭氧催化氧化
MVR蒸发
silver powder wastewater
high salt
high CODCr and high ammonia nitrogen
catalytic oxidation of ozone
MVR evaporation
