Enhanced Biological Phosphorus Removal Process in Chemical Coagulation Treatment of Brewery Wastewater

doi:10.13438/j.cnki.jdzk.2025.01.008

Abstract

Abstract: On the basis of optimizing the dosage sites of composite chemicals (PAC+PFC+PAM),the total phosphorus (TP) removal efficiency was investigated with different pH,initial TP concentrations,Al，Fe，P molar ratio.Combined with the XRD phase analysis.The phosphorus removal mechanism of PAC+PFC+PAM was preliminary explored.The results show that the outlet point of BAF tank was the best adding point of PAC+PFC+PAM.The n(Al)∶n(Fe)∶n(P)=0.76∶0.50∶1.00,and the pH was 8.0.The TP removal efficiency was 98.72%.Moreover,the TP removal efficiency was hardly affected by the change of TP concentration of the influent water.The TP content of the effluent water was lower than 2.0 mg/L.In addition,the XRD results showed that the main components of the precipitates were FerPO₄(OH)_3r-3 and Al(OH)₃.

Key words: brewing wastewater, chemical coagulation, total phosphorus, coagulant

WANG Ziyan, ZHOU Zhixuan, HU Wenyong, ZHOU Yu. Enhanced Biological Phosphorus Removal Process in Chemical Coagulation Treatment of Brewery Wastewater[J]. Journal of Jishou University(Natural Sciences Edition), 2025, 46(1): 51-57.

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