摘要
该研究针对目前生活污泥环境污染、资源化利用率低的现状,结合生活污泥高有机质、高氮低碳的原料特征,开展脱水生活污泥与玉米秸秆的混合厌氧干发酵研究,探讨C/N,接种量对厌氧干发酵的影响及其产气规律。试验结果表明:生活污泥与玉米秸秆厌氧干发酵较优的工艺C/N为25,接种量30%,含水率20%,中温35℃,发酵周期30 d,其干物质产气率为193.22 m L·g^(-1)TS,发酵剩余物的重金属含量和养分含量符合《城市垃圾农用控制标准值》(GB8172)要求,实现了脱水生活污泥的无害化处理与资源化利用。
Sludge had the characteristic of high organic matter,high-carbon and low-nitrogen. Mixed anaerobic fermentation of dewatered sludge and corn straw was carried out to investigate the influence of C / N and inoculum size on biogas production. The results showed that the parameters for optimized process were C / N of 25,inoculation of 30%,moisture content of 20%,temperature of 35℃ and fermentation period of 30 days. Its TS gas production rate was 193. 22 m L·g^（-1） TS.The heavy metal and nutrient content of fermentation residue met the requirement for urban trash standard used in agricultural（ GB8172）,and achieved harmless treating and resource utilization for dewatered sludge.
出处
《中国沼气》
北大核心
2016年第3期20-23,共4页
China Biogas
基金
农业部农业废弃物能源化重点实验室开放课题
关键词
脱水生活污泥
玉米秸秆
厌氧干发酵
沼气
dewatered sludge
corn stalks
dry anaerobic fermentation
biogas
