YUAN Ya-shu,CHEN Zheng-yang,FU Jin-xiang,et al.Practice and Consideration of Commissioning and Operation of Iron and Manganese Removal Filter Treating Groundwater in Liaozhong District of Shenyang City[J].China Water & Wastewater,2020,36(15 15):35-40.
Practice and Consideration of Commissioning and Operation of Iron and Manganese Removal Filter Treating Groundwater in Liaozhong District of Shenyang City
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
15 15
Page:
35-40
Column:
Date of publication:
2020-08-01
- Keywords:
- groundwater; manganese removal; iron removal; backwash; commissioning
- Abstract:
- An iron and manganese removal filter of the West Waterworks in Liaozhong District of Shenyang City was debugged to solve the problem of excessive manganese content in effluent for a long time. The filter was debugged by cleaning, sanding and adding 10-15 cm mature filter materials. After 68 days, Mn2+ in the effluent was lower than 0.1 mg/L, and recovery period of the filter was 68 days. The recovery period of the filter was 80 days when only cleaning and sanding were adopted. The effluent manganese concentration of the filter without commissioning gradually increased and it eventually reached 0.48-0.61 mg/L, and the effluent iron and manganese concentration couldn’t meet the standard. Using a high-pressure water gun to clean and scrape the surface of the filter layer could effectively solve the problem of filter blockage. The filtration period reached 25-30 hours after successfully commission of the filter. During the operation of the waterworks, average filtration velocity of the filter was 7-14 m/h, backwash intensity was 11-12 L/(s·m2), backwash time was 20-25 min, and filtration period was 24 hours. The effluent quality could meet Standards for Drinking Water Quality (GB 5749-2006).
Last Update:
2020-08-01