首页|The effect of fine grits and fine debris concentrations on the MLVSS/MLSS ratio of an activated sludge system
The effect of fine grits and fine debris concentrations on the MLVSS/MLSS ratio of an activated sludge system
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
The effect of fine grits and fine debris concentrations on the MLVSS/MLSS ratio of an activated sludge system
This study embarks on an explorative investigation into the effects of typical concentra-tions and varying particle sizes of fine grits(FG,the involatile portion of suspended solids)and fine debris(FD,the volatile yet unbiodegradable fraction of suspended solids)within the influent on the mixed liquor volatile suspended solids(MLVSS)/mixed liquor suspended solids(MLSS)ratio of an activated sludge system.Through meticulous experimentation,it was discerned that the addition of FG or FD,the particle size of FG,and the concentration of FD bore no substantial impact on the pollutant removal efficiency(denoted by the removal rate of COD and ammonia nitrogen)under constant operational conditions.However,a no-table decrease in the MLVSS/MLSS ratio was observed with a typical FG concentration of 20 mg/L,with smaller FG particle sizes exacerbating this reduction.Additionally,variations in FD concentrations influenced both MLSS and MLVSS/MLSS ratios;a higher FD concentration led to an increased MLSS and a reduced MLVSS/MLSS ratio,indicating FD accumulation in the system.A predictive model for MLVSS/MLSS was constructed based on quality balance calculations,offering a tool for foreseeing the MLVSS/MLSS ratio under stable long-term in-fluent conditions of FG and FD.This model,validated using data from the BXH wastewater treatment plant(WWTP),showcased remarkable accuracy.
Fine grits and fine debrisActivated sludge systemMLVSS/MLSS ratioPredictive model
Zhao Jiang、Zhiheng Xia、Shuai Liu、Qi Wei、Haitao Fan、Lu Qi、Guohua Liu、Hongchen Wang
展开 >
Low-carbon Water Environment Technology Research Center,School of Environment & Natural Resources,Renmin University of China,Beijing 100872,China
Fine grits and fine debris Activated sludge system MLVSS/MLSS ratio Predictive model
NETL
NSTL
万方数据
