摘要
采用活性炭/双氧水/臭氧体系对某公司染料废水生化出水进行脱色中试研究。结果表明,该体系具有替代本项目现行物化脱色工艺的可行性,不仅技术可行,而且经济可行。反应水力停留时间为2 h,双氧水(27.5%)投加量为0.2‰,pH控制在中性或偏碱性,臭氧质量浓度为50 mg/L,气体流量为1 L/min;生化出水经过过滤塔初步过滤、反应塔催化氧化(催化剂投加量40%),色度低至40倍,COD浓度低至20 mg/L以下,优于排放标准。生化出水物化脱色现行费用为25.46元/t,活性炭/双氧水/臭氧体系运行费用为2.15元/t,新体系在保证效果的同时大大节约了运行成本。
The activated carbon/H2 O2/O3 process is used to carry out pilot-scale studyon the decolorization of effluent after bio-chemical treatment of dye wastewater. Results show that this process has the feasibility of replacing the current physical decolorization process,which is technically and economically feasible. The reaction hydraulic retention time is controlled to 2 h,the hydrogen peroxide( 27. 5%) dosage is 0. 2‰,the p H is controlled to be neutral or alkaline,the ozone concentration is 50 mg·L-1,and the flow rate is 1 L·min-1. After experiencing filtering in the filter tower and catalytic oxidation in the reaction tower( catalyst dosage is 40%),the chromaticity of effluent is as low as 40 times,and COD concentration drops to 20 mg·L-1 or less,which is superior to the discharge standard. The operating cost for decolorization of biochemical effluent by physical method is around 25. 46 RMB/m3,that by activated carbon/hydrogen peroxide/ozone process is only 2. 15 RMB/m3. The new process guarantee decolorization effect and save greatly operating cost.
作者
邓猛
杨文斌
李海波
肖磊
尚官郧
DENG Meng;YANG Wen-bin;LI Hai-bo;XIAO Lei;SHANG Guan-yun(Wuhan Sentai Environmental Protection Co.,Ltd.,Wuhan 430000,China)
出处
《现代化工》
CAS
CSCD
北大核心
2020年第11期214-218,共5页
Modern Chemical Industry
关键词
活性炭
双氧水
臭氧
染料废水
脱色
activated carbon
H2O2
O3
dye wastewater
decolorization
