[Comparison on the performance of biostyr and bio-ceramic filter used for biological pretreatment of raw water].
A new biological filter called biostyr using biostyrene as media to purify raw water was compared with the widely studied bio-ceramic filter. The raw water was taken from a reservoir located in Northern China. It was shown this new biological filter could obviously improve the raw water quality. As far as the raw water investigated in this study was concerned, the removal percentage of COD(Mn), NH4+-N in the filter was 5%-20%, 80%-95%, respectively, and turbidity of the raw water decreased correspondingly, which indicated the feasibility that this filter could be applied in the field of biological pretreatment of raw water. It was also shown that under the uniform operating conditions, the performance of this new filter on the removal of contaminants, especially organics and turbidity, was slightly inferior to the bio-ceramic filter and would be more remarkably affected adversely by backwashing than bioceramic filter.
Sang
Jun-qiang
JQ
Research Center for Environmental Engineering & Management, Shenzhen Graduate School, Tsinghua University, Shenzhen 518055, China.
Zhang
Xi-hui
XH
Zhang
Sheng
S
Wang
Zhan-sheng
ZS
D019149:Bioreactors; D002516:Ceramics; D005374:Filtration / Q000295:instrumentation; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
D014874:Water Pollutants, Chemical