摘要
在污泥自热高温微好氧消化(ATMAD)工艺耦合硝酸铁去酸抑制作用过程中,研究了进料不同配比的初沉池污泥和二沉池污泥对硝酸铁强化污泥消化效果的影响。结果表明:硝酸铁对二沉池污泥的强化效果优于初沉池污泥,进料污泥中二沉池污泥比例越高,消化效果越好。进料污泥中二沉池污泥比例越高,硝酸铁对污泥上清液中VFA、SCOD和氮磷等去除的强化效果也越强,但消化污泥的脱水性能越差,消化污泥CST值随之增长的幅度也越小。
The effect of different types of feed sludge on digestion of sludge enhanced by ferric nitrate was investigated during the coupled ferric nitrate deacidification inhibition process of autothermal thermophilic microaerobic digestion(ATMAD) technology. The results showed that the enhancement effect of ferric nitrate on the sludge of the secondary sedimentation tank was better than that on the sludge in the primary sedimentation tank, and the higher the proportion of secondary tank sludge in the feed sludge, the better digestion effect would be obtained. The higher the proportion of secondary tank sludge in the feed sludge, the stronger enhancement effect of ferric nitrate on removal of VFA, SCOD and nitrogen and phosphorus, etc. in the supernatant of sludge would be, but the dewatering performance of digested sludge was poorer, while the growth of CST value of the digested sludge was smaller.
作者
金宁奔
冯凯丽
邰俊
张瑞娜
陈善平
朱南文
JIN Ning-ben;FENG Kai-li;TAI Jun;ZHANG Rui-na;CHEN Shan-ping;ZHU Nan-wen(Shanghai Environmental Sanitation Engineering Design Institute Co.,Ltd,Shanghai 200232,China;Shanghai Institute of Environmental Engineering and Design Science Co.,Ltd,Shanghai 200232,China;Shanghai National Engineering Research Center of Urban Water Resources Co.,Ltd,Shanghai 200082,China;School of Environmental Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《环境工程》
CAS
CSCD
北大核心
2019年第2期79-83,113,共6页
Environmental Engineering
基金
上海市科学技术委员会科研计划项目(14DZ1208401
14DZ1208402)
关键词
自热高温微好氧消化
污泥
硝酸铁
污泥类型
脱水性能
autothermal thermophilic microaerobic digestion
sludge
ferric nitrate
sludge type
dewatering performance
