CHENZhuo-ran,LIChen,ZHANGYi-ran,et al.Polyaluminum Ferric Chloride for the Treatment of Raw Water from Yangtze River[J].China Water & Wastewater,2023,39(3):62-66.
Polyaluminum Ferric Chloride for the Treatment of Raw Water from Yangtze River
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第3期
Page:
62-66
Column:
Date of publication:
2023-02-01
- Keywords:
- polyaluminum ferric chloride; raw water from Yangtze River; coagulation; reagent proportion
- Abstract:
- The performances of polyaluminum chloride (PAC), polyaluminum ferric chloride (PAFC) and ferric chloride (FeCl3) for treating raw water from Yangtze River were analyzed under different reagent proportions, and the applicability and practicability of PAFC in actual operation of water purification plant were investigated to enrich the water treatment technology of water purification plant. The best treatment performance was obtained when 30 mg/L PAFC was added alone, and the removal rates of turbidity and CODMn were 96.52% and 61.53%, respectively. The addition of 40 mg/L PAFC still ensured that the residual aluminum in the product water was less than 0.2 mg/L specified in Standards for Drinking Water Quality (GB 5749-2006). The performance of PAC or PAFC combined with FeCl3 was similar. When the total dosage was 30 mg/L, the removal rate of turbidity was approximately 93.29%, and that of CODMn was approximately 61.38%. In general, under the condition that the product water quality meets the national standard and the requirements of the water purification plant, the performance and cost of the reagent need to be considered comprehensively, and different reagent proportions are reasonably selected according to the characteristics of raw water quality.
Last Update:
2023-02-01