HUANGTing-ting,LITing,FANZhang,et al.Practice of Lime Flocculation for Seasonal Low Turbidity and High Manganese Raw Water[J].China Water & Wastewater,2024,40(8):108-112.
Practice of Lime Flocculation for Seasonal Low Turbidity and High Manganese Raw Water
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第8期
Page:
108-112
Column:
Date of publication:
2024-04-17
- Keywords:
- low turbidity and high manganese raw water; potassium permanganate pre-oxidation process; lime flocculation process
- Abstract:
- During the summer high temperature period, low turbidity and high manganese raw water is easy to appear in the lower layer of reservoir. The commonly used potassium permanganate pre? oxidation process for removing manganese is not effective in waterworks with short residence time, which affects the safety of water supply. Aiming at this problem, a waterworks in Shenzhen adopts lime flocculation process, establishes a series of measures such as optimizing lime dosing quantity and adjusting discharge frequency to optimize flocculation reaction conditions and reduce the effluent manganese. After adopting the above measures, the average manganese content of filter effluent was 0.01 mg/L, which is lower than the national standard, and other water quality indicators are in line with the Standards for Drinking Water Quality (GB 5749-2022). The result shows that the measures taken by the waterworks to deal with seasonal low turbidity and high manganese raw water quality are scientific, feasible and effective, which can provide technical reference for counterparts.
Last Update:
2024-04-17