Improving removal efficiency of organic matters by adding phosphorus in drinking water biofiltration treatment.
- Author:
Xin YU
1
;
Xiao-Jian ZHANG
;
Zhan-Sheng WANG
Author Information
- Publication Type:Journal Article
- MeSH: Bacteria; growth & development; Bioreactors; Filtration; Kinetics; Organic Chemicals; chemistry; Phosphorus; Water Pollutants, Chemical; Water Purification; instrumentation; methods; standards
- From: Biomedical and Environmental Sciences 2003;16(1):29-39
- CountryChina
- Language:English
-
Abstract:
OBJECTIVETo investigate phosphorus limitation and its effect on the removal efficiency of organic matters in drinking water biological treatment.
METHODSBacterial growth potential (BGP) method and a pair of parallel pilot-scale biofilters were used for the two objectives, respectively.
RESULTSThe addition of phosphorus could substantially increase the BGPs of the water samples and the effect was stronger than that of the addition of carbon. When nothing was added into the influents, both CODMn removals of the parallel biofilters (BF1 and BF2) were about 15%. When phosphate was added into its influent, BF1 performed a CODMn removal, 6.02 percentage points higher than the control filter (BF2) and its effluent had a higher biological stability. When the addition dose was < 20 micrograms.L-1, no phosphorus pollution would occur and there was a good linear relationship between the microbial utilization of phosphorus and the removal efficiency of organic matters.
CONCLUSIONSPhosphorus was a limiting nutrient and its limitation was stronger than that of carbon. The addition of phosphate was a practical way to improve the removal efficiency of organic matters in drinking water biological treatment.
