Comparison of Biomass Concentration Determination Methods in Biological Powdered Activated Carbon Process
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
9 9
Page:
17-21
Column:
Date of publication:
2020-05-01
- Abstract:
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Differential heating method and lipid- phosphorus method were used to determine the biomass concentrations of activated sludge-powdered activated carbon (PAC) mixed sample and actual biological powdered activated carbon (BPAC) sample, and the accuracies of the two methods were compared to find a more efficient method for measuring the biomass concentration of BPAC.The biomass concentration measured by differential heating method had higher accuracy and precision than that of lipid-phosphorus method. The average relative error (absolute value) and standard deviation of the differential heating method were about 10% and 2.5%, while those of the lipid-phosphorus method for the high biomass samples were about 26% and 9%, and for the low biomass samples were about 15% and 4%. When the biomass concentration of the actual BPAC sample was determined, the relative standard deviation of the differential heating method was 7.60%, while that of the lipid-phosphorus method was 8.88%, which further verified the advantages of higher accuracy and precision of the differential heating method.
Last Update:
2020-05-01