摘要
以自制钴渣基陶粒作为曝气生物滤池(BAF)的滤料,利用该种滤料的BAF对含氮磷模拟废水进行了处理,研究了BAF的挂膜与启动,BAF工艺参数变化对废水中NH4+-N、TN、TP去除效果的影响。结果表明,经过微生物复合接种21 d后,BAF可成功挂膜;在曝气量为1.25 L/min、气水体积比3/1的条件下,处理NH4+-N、TP的质量浓度分别为100、5 mg/L的模拟废水时,BAF的优化HRT为3.22 h、COD/ρ(TN)为4/1,反冲洗周期12 d。在此条件下,BAF对NH4+-N、TN和TP的去除率分别为98.0%、62.2%和97.6%。以该钴渣为原料制备的陶粒可用作BAF滤料,该滤料BAF可有效处理废水中氮磷。
The homemade cobalt slag based ceramsite was employed as filter material for a biological aerated filter(BAF),and the BAF was applied to treat a simulated wastewater.The biofilm culturing and start-up of the BAF,the influences of BAF process parameters on removal of NH4+-N,TN and TP were researched.The results indicated that,the biofilm was successfully developed by microbial compound inoculation for 21 d.When treating a wastewater containing NH4+-N and TP with the BAF,and the mass concentration of NH4+-N and TP was 100 mg/L and 5 mg/L,under the conditions of aeration rate was 1.25 L/min,gas water volume ratio was 3/1,the optimum HRT was 3.22 h,COD/ρ(TN)was 4/1,the backwash cycle time was 12 d.Under this conditions,the removal rate of NH4+-N,TN and TP by BAF reached 98.0%,62.2%and 97.6%respectively,indicating that the BAF with cobalt slag based ceramsite filter material could be used to treat the wastewater containing nitrogen and phosphorus effectively.
作者
靖青秀
游威
黄晓东
王魏
张泽辉
张呈熙
JING Qingxiu;YOU Wei;HUANG Xiaodong;WANG Wei;ZHANG Zehui;ZHANG Chengxi(College of Materials,Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi)
出处
《水处理技术》
CAS
CSCD
北大核心
2020年第10期28-32,共5页
Technology of Water Treatment
基金
国家自然科学基金资助项目(51674305)
广东省科技厅资助项目(2016YT03N101,2017A090905024)
江西理工大学资助项目(NSFJ2015-K06)
广东佳纳能源科技有限公司资助项目(2017-3607-09-000012)
大学生创新创业训练计划项目(DC2019-030)。
关键词
钴渣基陶粒
曝气生物滤池
含氮磷废水
以废治废
cobalt slag based ceramsite
biological aerated filter(BAF)
wastewater containing nitrogen and phosphorus
waste control by waste
