ZHANG Yong,QIN Yu-lan,FAN Xiao-li,et al.Application of Flat Ceramic MBR Process in Rural Sewage Treatment[J].China Water & Wastewater,2021,37(10 10):120-125.
Application of Flat Ceramic MBR Process in Rural Sewage Treatment
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
10 10
Page:
120-125
Column:
Date of publication:
2021-05-17
- Abstract:
- In order to understand the feasibility of flat ceramic membrane bio-reactor in village sewage treatment, the operation data of an integrated ceramic membrane sewage treatment facility with processing capacity of 500 m3/d was analyzed. The inlet water quality and quantity fluctuate greatly, and water temperature is low in winter. Under stable operation, the average effluent concentrations of COD, NH4+-N, and TP are about 17.54, 1.35, and 0.19 mg/L respectively.When the flat ceramic membrane is operated at a flux of 16-40 L/(m2·h), the average rise rate of the transmembrane pressure(TMP) is 1 kPa/d, which can be restored through cleaning in place. As for treating village sewage, it is necessary to pay attention to pre-treatment, to regularly inspect the uniformity of the membrane purge aeration, and to control sludge concentration less than 15 g/L. For projects with low water concentration load and low sludge concentration as below 1 g/L, the backwash frequency can be increased and the backwash time can be reduced simultaneously, so as to increase the transmembrane pressure to about -55 kPa.
Last Update:
2021-05-17