ZHOUJia-zhong,HANWen-jie,SONGPing-zhou,et al.BFM Process Design and Operation Analysis of an Intensive WWTP in North China[J].China Water & Wastewater,2023,39(18):126-132.
BFM Process Design and Operation Analysis of an Intensive WWTP in North China
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第18期
Page:
126-132
Column:
Date of publication:
2023-09-17
- Keywords:
- suspended carrier; biofilm; magnetic loading precipitation; BFM; emergency treatment; rainy season overflow; prefabricated
- Abstract:
- The treatment capacity of a new WWTP in north China is 2×104 m3/d, which faced with many problems, such as limited land occupation, complex quality of influent containing industrial wastewater, high effluent quality to reach level quasi-V standard for surface water within four months. BFM was adopted as core process, which consists of pure moving bed biofilm reactor, MBBR in section B and improved magnetic coagulation precipitation process in section process M. At the same time, the modular design was adopted. The design and construction were completed in 80 days, and the water supply reached the standard in 20 days. The process flow is pretreatment, BFM, ozone oxidation, and rotary filter. The HRT of section B without secondary sedimentation tank is 10 h. The design surface load of section M is 11.57 m3/(m2·h). Except that the pre?processing adopts civil construction, the rest sections are modular, which shortens the construction period. The effluent of COD, NH4+-N, TN, TP and SS are (21.86±3.26), (0.44±0.24), (10.19±1.37), (0.09±0.03) and (4.77±0.89) mg/L respectively. The effluent quality could stably superior to the design effluent criteria of level quasi-V. When the COD of BFM effleunt exceeds 30 mg/L, the ozone oxidation device will be started. The loading of artificial intelligence system improves the comprehensive operation and management level of WWTP, and saves 26% of energy and consumption. The operating cost of this project is 0.98 yuan/m3.
Last Update:
2023-09-17