环境工程学报2017，Vol.11Issue(6)：3740-3746,7.DOI:10.12030/j.cjee.201609252
臭氧预处理对剩余污泥特性及厌氧消化的影响
Effects of ozone pretreatment on sludge characteristics and anaerobic digestion
摘要
Abstract
The effects of ozone pretreatment on sludge characteristics and anaerobic digestion were studied in this paper.The influence of ozone dosing quantity on sludge characteristics was investigated,and the anaerobic digestion of pretreated sludge was also carried out.The results showed that the highest supernatant SCOD content of sludge could reach 1 006.08 mg · L-1 after 15 min pretreatment,representing an increase of 420.85％ of the untreated sludge.The peak soluble protein and polysaccharide content in the sludge supernatant was detected when the ozone treatment time was 10 min.The highest ammonia nitrogen content was found after 15 min'ozone treatment.Excitation-emission matrix (EEM) showed that the content of fulvic acids in the sludge decreased with the increasing ozone amount,obvious decrease of fulvic acids was observed at ozone treatment time of 20 min.Microscope and scanning electron microscopy (SEM) images showed that with the increase of ozone dosing,the cell structure of the microorganisms in the sludge subjected to varying degrees damage.The results of anaerobic digestion showed that when the ozone treatment time was 10 min,the highest methane yield up to 318.39 mL · (g VS)-1 could be obtained,which increased by 396.00％ compared with control group.关键词
臭氧预处理/剩余污泥/污泥特性/厌氧消化Key words
ozone pretreatment/excess sludge/sludge characteristics/anaerobic digestion分类
资源环境引用本文复制引用
石璞玉,孙力平,谢春雨,郑亚哲,邱春生..臭氧预处理对剩余污泥特性及厌氧消化的影响[J].环境工程学报,2017,11(6):3740-3746,7.基金项目
天津市科技计划项目(14ZCDGSF00032) （14ZCDGSF00032）
天津市高等学校科技发展基金计划项目(20130515) （20130515）
