Contrast of Treatment on Simulated Water by Biological Aerated Filter and Membrane Bio-Reactor

Abstract

Biological aerated filter (BAF) and membrane bio-reactor (MBR) were the common methods at present stage. They were based microbial action to treated raw water. That's common point of two methods. But some difference of treatment effect existed in biological aerated filter (BAF) and membrane bio-reactor (MBR). It's necessary to make a comparison to analysis of difference between two methods. These experiments set some controlled conditions and utilized lab simulated water as experimental raw water. The results of graphs of experiments showed some conclusions: The two methods had very obvious effects to remove chemical oxygen demand (COD). The dissolved oxygen (DO) concentration and chemical oxygen demand (COD) removal had positive correlation. The biological aerated filter (BAF) had better effect than membrane bio-reactor (MBR) to remove total phosphorus (TP). The aim of experiment was analyzed the important indexes treatment and function characteristics then provided some advices to the engineering in the future.