USE OF ACTIVATED CARBON IN A MEMBRANE BIOREACTOR

摘要

A membrane bioreactor (MBR) has membranes comprising a supporting structure. A supply unit doses a sorbent such as powdered activated carbon (PAC) into the MBR. The PAC is maintained at a concentration in the mixed liquor of 200 mg/L or more. Mixed liquor with the sorbent particles recirculates within the MBR at a flow rate of at least twice the feed flow rate. Air bubbles are provided to scour the membranes including during at least part of a permeation step. The sorbent particles are present in the mixed liquor and contact the membranes. Bioaugmentation products may be immobilized on PAC or other carriers and then added to an MBR or other bioreactors.

主权项

1. A process, comprising:
providing a membrane bioreactor comprising membranes comprising a film on a supporting structure; and, maintaining a concentration of sorbent particles of at least 200 mg/L in the membrane bioreactor, wherein the particles contact the membranes.