Research to Control the Pollution of Membrane Bioreactor by Activated Silica Filler

2018 5th International Conference on Advanced Composite Materials and Manufacturing Engineering

Delgersaikhan^1 ; Zhang, Yongfeng^1

College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot

010051, China^1

关键词: Continuous testing;    Domestic sewage treatment;    Integrated waste waters;    Life expectancies;    Membrane bioreactor;    Pollutant discharges;    Suspended matters;    Urban sewage treatment;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/394/5/052047/pdf
DOI  :  10.1088/1757-899X/394/5/052047

来源: IOP

【 摘 要 】

For the purpose of re-purification of domestic sewage, a new type of active silica packing was used to control the pollution of membrane bioreactors. The change law of membrane flux and its influencing factors during the long-term operation were investigated. In this paper will show the main filler to the membrane flux decay, as well as further study on the effect of domestic sewage treatment. After 42 days of continuous testing, the average membrane flux was designed at 84L/m2•h, the membrane bioreactor cleaning cycle increased by 30% to 40%, the membrane life expectancy increased by 30% to 40% and the sewage treatment speed increased by 25% to 35%. The treated reclaimed water has a COD of 11.7-18.1 mg/L, a BOD5 of 3.2-5.6 mg/L, an ammonia nitrogen of 8.54-9.10 mg/L, a hardness of 2.5 mmol/L, a turbidity of 1.91NTU, a chroma of 4, a suspended matter of 0.0001 mg/L, pH value of 7.20, a salt content of 0.07%, a conductivity of 960μs/cm and a TDS of 734mg/L, meeting the first-class requirements of the urban sewage treatment plant pollutant discharge standard and the integrated waste water discharge standard.