Physical cleaning initiation controlled by transmembrane pressure set-point in a submerged membrane bioreactor

摘要: Abstract The application of physical cleaning methods such as backflushing or relaxation is an essential part the operation mode in submerged membrane bioreactors (SMBRs) applied to wastewater treatment. However, strategy usually for pre-set fixed value frequency involves a loss water production. This paper deals with validity control system initiation by monitoring transmembrane pressure using both methods. To evaluate effect key operational parameter (transmembrane set-point, TMP sp ) on fouling and process productivity, sludge samples from pilot-scale SMBR were filtered under different filtrate flux values ( J  = 20–40 l h −1  m −2 bench filtration unit. From this study, it was found that automatically adjusts function which results increase net permeate produced. Cleaning efficiency, described terms residual resistance, cake rate can be significantly affected selected method performed. A maximal achieved when used, above threshold 30 l h imposed intermediate are applied.