XIE Xi-ping,ZHANG Pei-yao,YANG Yun,et al.Pilot-scale Test Study on Low-pressure Nanofiltration Membrane Applied in Drinking Water Advanced Treatment[J].China Water & Wastewater,2020,36(17 17):30-35.
Pilot-scale Test Study on Low-pressure Nanofiltration Membrane Applied in Drinking Water Advanced Treatment
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
17 17
Page:
30-35
Column:
Date of publication:
2020-09-01
- Keywords:
- drinking water advanced treatment; low-pressure nanofiltration membrane; trace organic compounds (TrOCs); interception rate
- Abstract:
- Low-pressure nanofiltration membrane was used to treat effluent from a sedimentation tank of a drinking water plant in Yangtze River basin. Interception performance of the key pollutants and optimum operational parameters of a pilot-scale test DF membrane system (design scale of 50 m3/d) were investigated. When the recovery rate was set to be 85%, interception rates of CODMn, total aluminum, TDS and total hardness were (74.0±6.0)%, (96.8±2.4)%, (24.6±1.5)% and (30.5±2.7)%, respectively, and the average interception rate of 15 kinds of trace organic compounds was 92.4%. After optimizing the process parameters, the recovery rate could reach to 90% with operation flux of 16-18 L/(m2·h) and chemical cleaning cycle of three months without adding inhibitor. The operational cost was 0.247 yuan/m3, indicating that the process was green and economy with high water recovery rate.
Last Update:
2020-09-01