摘要
以浙江某纸业企业利用造纸废水厌氧处理所产沼气发电工程为例,研究造纸废水厌氧处理产沼气发电系统工艺运行的稳定性和经济可行性。结果表明:(1)厌氧内循环(IC)反应器运行稳定,产沼气量基本在3000m3/d左右(测定点压强约为2×105Pa),平均产气率为0.38m3/kg,基本达到产气率设计要求。(2)经处理后沼气中硫化氢质量浓度始终处于20～50mg/m3,平均固体颗粒物质量浓度约为15mg/m3,平均湿度为66%,达到发电系统的要求。(3)运行期间平均日发电量为8600kW.h,回用的蒸汽量平均约为1.1t/d。(4)整个沼气发电系统总收支为6.0万元/a,实现收支平衡且略有盈余。(5)假设以煤炭替换沼气发电,以年发电258万kW.h计算,理论上沼气发电系统每年节省煤炭928.8t,减少2118t二氧化碳排放,节能减排成效显著。
Biogas produced from wastewater anaerobic treatment was used to generate power in a papermaking company in Zhejiang province.Taking this project for example,this paper analyzes the stability and economic feasibility of the whole biogas utilization system.The results showed that,the anaerobic treatment system operated steadily with the average daily methane output of 3 000 m3.After the purification system,the hydrogen sulfide concentration ranged 20-50 mg/m3,the average content of dust was about 15 mg/m3,the average humidity was 66%,and the quality of biogas met the requirements of generator.The power capacity per day was about 8 600 kW·h/d and the steam from recovery of waste heat was 1.1 t/d.The system could decrease 928.8 t of coal consumption,reduce 2 118 t carbon dioxide emission and achieve small amount of economic profit simultaneously.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2010年第9期46-49,共4页
Environmental Pollution & Control
基金
浙江省重大科技专项(No.2007C13033
No.2008C01014)
关键词
造纸废水
沼气发电
脱硫
厌氧内循环反应器
papermaking wastewater
biogas power generation
desulfurization
internal circulation anaerobic reactor
