摘要
以普通竹炭为原料,采用氢氧化钾活化法改性制备低湿密度竹炭,扫描电镜(SEM)、比表面积和孔径分析(BET-BJH)和傅立叶变换红外光谱(FT-IR)等表征结果表明改性后的竹炭总孔容增多,湿密度降低。将低湿密度竹炭作为悬浮生物载体应用到移动床生物膜反应器(MBBR)中,用以处理模拟生活污水,研究不同影响因素下,对COD、氨氮、TN和TP的去除效果,探索最佳运行工艺。结果表明,低湿密度竹炭悬浮生物载体流化状态好,去除效果较好。对于进水COD质量浓度为200mg/L的模拟生活污水,适宜的MBBR工艺条件为气水比100∶1(体积比)、竹炭填充率15%、水力停留时间4h,处理后出水COD、氨氮、TN和TP去除率分别为83%、77%、48%、57%。
Using ordinary bamboo carbon as raw material,low wet density bamboo carbon was prepared by KOH activation method. SEM,BET-BJH and FT-IR results indicated that the total pore volume of the modified bamboo carbon increased and the wet density decreased. The low wet density bamboo carbon was applied as a suspension biological carrier in the moving bed biofilm reactor ( MBBR ) for treating simulated domestic sewage. The effects of COD,ammonia nitrogen,TN and TP removal were studied under different influencing factors,and the optimum operating conditions were explored. The results showed that the low wet density bamboo carbon as a suspended microbial carrier had favorable fluidization state and good removal effect. For simulated domestic sewage with influent COD concentration of 200 mg/L ,the optimum MBBR operating conditions were air-water ratio 100∶1 (volume ratio),filling rate 15%,hydraulic retention time 4 h. The removal rates of COD,ammonia nitrogen,TN and TP in the effluent were 83%,77%,48% and 57%,respectively.
作者
张磊
黄悦
袁文锐
金辉
蔡诚
周培国
ZHANG Lei;HUANG Yue;YUAN Wenrui;JIN Hui;CAI Cheng;ZHOU Peiguo(College of Biology and the Environment,Nanjing Forestry University,Nanjing Jiangsu 210037)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2019年第10期1170-1176,共7页
Environmental Pollution & Control
基金
国家重点研发计划项目（No.2016YFD0600703-4）
江苏省科技支撑计划重点项目（No.BE2016304）
江苏高校优势学科建设工程项目
