摘要
通过将农村居民厨余垃圾与生活污水进行共处置,研究了45 d试验周期内生活污水进水量与进水周期对产沼性能的影响.结果表明,甲烷(CH4)累积产量与生活污水进水量呈正相关关系,生活污水进水量100 mL的CH4累积产量高于进水量50 mL的CH4累积产量.当进水周期为3 d时,100 mL和50 mL进水量的CH4累积产量分别为792 mL和484 mL,前者是后者的1.6倍;当进水周期为5 d时,100 mL和50 mL进水量CH4累积产量分别为3 741 mL和2 825 mL,前者是后者的1.3倍.反应器内CH4累积产量与进水周期呈正相关关系,进水周期为5 d的CH4累积产量高于进水周期为3 d的CH4累积产量.当生活污水进水量为50 mL时,5 d和3 d进水周期的CH4累积产量分别为2 825 mL和484 mL,前者为后者的5.8倍;当生活污水进水量为100 mL时,5 d和3 d进水周期的CH4累积产量分别为3 741mL和792 mL,前者为后者的4.7倍.试验周期内出水水质发生明显变化,沼液出水的化学需氧量高于10 000 mg·L-1,总氮约为600 mg·L-1,总磷约为100 mg·L-1,具有较高的肥效,可作为液体肥料还田.
The effects of inflow and cycle on co-treatment of rural kitchen waste and domestic sewage was investigated during 45-day experimental period.The results showed that methane production accumulation had a positive correlation with inflow.Methane production accumulation under 100 mL-inflow was higher than that under 50 mL-inflow.Methane production accumulation under 100 mL-inflow and 50 mL-inflow was 792 mL and 484mL respectively during 3-day cycle.Methane production accumulation under 100 mL-inflow and 50 mL-inflow was 3 741 mL and 2 825 mL respectively during 5-day cycle.Methane production accumulation of 5-day cycle was higher than that of 3-day cycle.Under the condition of 50 mL-inflow,the methane production accumulation of 5-day cycle and 3-day cycle were 2 825 mL and 484 mL respectively,under the condition of 100 mL-inflow,the methane production accumulation of 5-day cycle and 3-day cycle was 3 741 mL and 792 mL respectively.The quality of effluent was monitored as follows：CODCr10 000 mg·L-1,TN≈600mg·L-1,TP≈100mg·L-1,which could be serviced as the liquid fertilizer used in the agriculture fields.
出处
《甘肃农业大学学报》
CAS
CSCD
北大核心
2011年第2期105-110,共6页
Journal of Gansu Agricultural University
基金
国家"十一五"重大专项(2008ZX07101-007-01)
关键词
厨余垃圾
生活污水
共处置
甲烷
kitchen waste
domestic sewage
co-treatment
methane
