摘要
为研究纯氧曝气对垃圾渗滤液生化反应池的处理效能和工艺运行的稳定性,于2014年10月21日至2015年1月5日在某垃圾焚烧厂渗滤液处理站进行工程性实验。在生化反应池的O段安装纯氧曝气器,以COD、NH_3-N为综合指标,考察渗滤液的处理量和设备的运行维护情况。结果表明,初期纯氧曝气可以改善生化系统中污泥的性状,使渗滤液的处理满足生产需要;2台曝气器运行时,A/O系统平均可处理87.5%的COD和98.3%的NH_3-N,而单台运行时,平均去除83.0%的COD,98.9%的NH_3-N,表现为对NH_3-N有很强的去除效率;纯氧曝气有很大的耐COD负荷冲击能力,可使工艺运行处于稳定状态;高效的渗滤液处理能力增加了容积负荷,从而降低曝气池的体积;无需鼓风机和鼓风机房,降低了环境噪音和土建占地。综上所述,它是一种简单、经济、实用的渗滤液处理工艺,且维护方便,适用于新建和改扩建工程项目。
The treatment performance of a biochemical reaction basin and the stability of the pure-oxygen aeration treatment system leachate operation process were researched by conducting an engineering test in a waste incineration plant. The test period was October 21,2014 to January 5,2015. The pure-oxygen aeration treatment system was installed to investigate its treatment capacity and operating maintenance,with the aggregative indicators being COD and NH3-N. The results indicated that the pure-oxygen aeration treatment system could improve the biological properties of the sludge,with the early stage treatment capacity meeting production requirements. In addition,the average removal rates of the A/O system were 83. 0% and 98. 9% for COD and NH3-N,respectively,with the addition of an aerator. The apparent average removal rates when two aerators were employed were 87. 5%and 98. 3%,respectively. This was a superior rate for degrading NH3-N. Additionally,the stable operation process could be attributed to the high concentration of COD disposed by the pure-oxygen aeration treatment system. The higher treatment efficiency increased the volumetric loading,as it decreased the volume of the aeration basin. Not having to employ a blower room and an air blower reduced the ambient noise and the area covered by civil engineering. Therefore,the pure-oxygen aeration treatment system is considered a simple,economical,and practical leachate technology,suitable for new and reconstructed engineering projects.
出处
《环境工程学报》
CAS
CSCD
北大核心
2016年第10期5689-5694,共6页
Chinese Journal of Environmental Engineering
关键词
纯氧曝气处理系统
垃圾焚烧厂
垃圾渗滤液
活性污泥法
工程实验
pure-oxygen aeration treatment system
waste incineration plant
leachate
activated sludge method
engineering test
