[Novel resources utilization technique for rural domestic refuse].
In order to speed up rural domestic refuse resources utilization, intermittent aeration and continuous aeration were applied to treat rural domestic refuse after anaerobic fermentation. Three kinds of refuse were selected on base of fermentative age, i.e. three months, five months and seven months. Results showed that aeration could remove water and organic materials of the refuse effectively. Points of view on aeration, continuous aeration was better than intermittent aeration, and on the other side, water removal rate increased with ventilation and decreased with fermentative age in the condition of intermittent aeration. On organic materials removal point, it was affected by fermentative age significantly, i. e. increase of fermentative age could resulted in decrease in the removal efficiency. In conclusion, intermittent aeration of 0.06 m3/(min x m3) was considered to be feasible for treatment. The water removal efficiency of three months, five months and seven months fermentative age refuse could be up to 49.1%, 45.3% and 44.0%, and organic compound removal efficiency was 41.9%, 24.8% and 13.1%, respectively, after intermittent aeration for 21 d. Moreover, concentrated effect was presented on major nutrient ingredients, such as total nitrogen, phosphorus, and potassium during the aeration, which realized for resources utilization.
Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China. qiucaidi@yahoo.com.cn
Cai-Di
CD
Qiu
Ruo
R
He
Song-Mei
SM
Chen
Bin
B
Lou
Dong-Sheng
DS
Shen
D000332:Aerobiosis; D000693:Anaerobiosis; D019149:Bioreactors; D002681:China; D005285:Fermentation; D009930:Organic Chemicals / Q000302:isolation & purification / Q000378:metabolism; D010100:Oxygen / Q000737:chemistry*; D012037:Refuse Disposal / Q000379:methods*; D012423:Rural Health; D014867:Water / Q000032:analysis
D009930:Organic Chemicals; D014867:Water; D010100:Oxygen