摘要
采用自热高温微好氧消化(ATMAD)工艺在硝酸铁强化下进行污泥批式消化试验,考察了不同进泥浓度对稳定化效果的影响。结果表明:在进泥TS为4.5%~6.5%范围内,硝酸铁对ATMAD工艺污泥消化过程的强化效果随进泥浓度的降低而提高;硝酸铁对上清液中SCOD、VFA和氮等指标的强化去除效果均随进泥浓度的降低而增强;较低进泥浓度下p H值和磷等指标却相对较高。综合考虑强化消化的效果和自热升温的需求,进泥TS浓度选择5.5%为佳。
The effect of different sludge concentration on stabilization of sludge was investigated in autothermal thermophilie microaerobic digestion （ATMAD） strengthened by ferric nitrate. The results showed that the effect of ferric nitrate on ATMAD process increased with the decrease of TS concentration of the feeding sludge in the range of 4.5% -6.5%. The removal of SCOD, VFAs and nitrogen in super- natant enhanced by ferric nitrate increased with the decrease of feeding sludge concentration. The pH and phosphorus value with lower concentration of feeding sludge was higher under the action of ferric nitrate. Considering the effect of enhanced anaerobic digestion and the requirement of self-heating, 5.5% TS concentration of feeding sludge was preferred.
作者
冯凯丽
马艳
李宁
金宁奔
朱南文
FENG Kai-li;MA Yan;LINing;JIN Ning-ben;ZHU Nan-wen(Shanghai National Engineering Research Center of Urban Water Resources Co. Ltd., Shanghai 200082, China;Shanghai Environmental Sanitation Engineering Design Institute Co. Ltd., Shanghai 200232, China;Shanghai Institute of Environmental Engineering and Design Science Co. Ltd., Shanghai 200232, China;Schoo（ of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2018年第11期10-14,19,共6页
China Water & Wastewater
基金
污染控制与资源化研究国家重点实验室开放课题(PCRRF16031)
上海市2016年度中央引导地方科技发展专项资金资助项目
关键词
污泥
自热高温微好氧消化
硝酸铁
污泥浓度
稳定化
sludge
autothermal thermophilic microaerobic digestion
ferric nitrate
sludgeconcentration
stabilization
