ZHANG Cai-yun,ZHANG Peng-chuan,YUAN Lu-lu,et al.Design and Engineering Verification of Nanofiltration Process for Super High Standard Phosphorous Removal in Wastewater Reclamation[J].China Water & Wastewater,2021,37(10 10):116-119.
Design and Engineering Verification of Nanofiltration Process for Super High Standard Phosphorous Removal in Wastewater Reclamation
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
10 10
Page:
116-119
Column:
Date of publication:
2021-05-17
- Keywords:
- wastewater reclamation; phosphorous removal; NF; MBR
- Abstract:
- To meet the effluent quality as level Ⅲ criteria of Environmental Quality Standards for Surface Water (GB 3838-2002) (S-Ⅲ), the MBR-NF process was applied in a municipal wastewater treatment plant (WWTP) in Dali, Yunnan Province. Aiming at the super high effluent requirement of TP≤0.05 mg/L, the phosphorus removal balance and membrane system design were analyzed for the NF process section of this project, and the optimal working conditions of double reflux of concentrate and 4 ∶1 ratio of two-section element arrangement were determined. The verification results of actual project show that the water quality is stable and up to the standard. Among them, the effluent TP concentration was 0.013-0.042 mg/L. The operational cost including energy, chemicals, consumption materials and NF membrane depreciation was 0.37-0.55 yuan/m3. The duration of a membrane cleaning cycle was about a month. The common effluent indexes of MBR-NF process can meet S-Ⅲ, and have high safety to environmental ecosystem, which is suitable for wastewater treatment in eutrophication sensitive areas, industrial water reuse and wastewater reclamation for groundwater recharge.
Last Update:
2021-05-17