Membrane fouling

A dynamic analysis procedure has been adopted based on mass and force balances for particle deposition on the membrane surface to analysis and predict the particle fouling layer structure in microfiltration. The local properties in a fouling layer, say porosity distribution, resistance to fluid flow

Based on the reversible volume phase transition of Poly(N-isopropylacrylamide) (PNIPAAm) around LCST, a simple temperature-change cleaning method for PNIPAAm grafted porous polyethylene membrane fouled by bovine serum albumin (BSA) was proposed. It was found that after the temperature-change cleanin

The interactions between membrane and particles or among particles were examined based on DLVO theory in order to probe complex membrane fouling phenomena. The strength of the interactions depends on the competition between van der Waals attraction and electrostatic double layer repulsion. An on-lat

Laboratory bench-scale experiments were conducted to elucidate the effect of ozone on the microfiltration membrane fouling through reaction with particulates in the secondary effluent from BeiXiaoHe WWTP. Membrane resistance (R) was recorded during the filtration course of source water and that afte

The main obstacle for a wider use of membrane bioreactors (MBRs) for wastewater treatment is membrane fouling, which increases operating costs. For a more efficient control of membrane fouling in MBRs, an understanding of the mechanisms of membrane fouling is important. We conducted two separate pil

Membrane fouling mitigation in a membrane bioreactor (MBR) performance has been the main focus of research in recent times and researchers have proposed many mechanisms based on biological, hydrodynamic and physicochemical approaches. From this perspective, this paper has been divided into two main

Excess aeration to membrane surface is common for controlling membrane fouling in a submerged membrane bioreactor (MBR) system, but significant energy is consumed for excess air production. Therefore, an alternative strategy for membrane fouling control is currently needed. A new configuration of MB

The chloride concentration of a hazardous leachate of approximately 22,000 mg/l is too high for the direct discharge requirement of less than 1000 mg/l into the municipal sewerage system. Electrodialysis (ED) was selected amongst various other alternative technologies for the desalination/concentrat

This study was conducted to investigate the characteristics of membrane fouling and removal of phosphorous in a membrane bioreactor process by addition of inorganic coagulants directly into aerobic tank of a pre-anoxic nutrient removal system. In order to determine the specific cake resistance of ac

The nanofiltration (NF) membranes and their properties are quite diverse, but can generally be described as having rejection characteristics that range from “loose” RO to “tight” ultrafiltration. The uniqueness of these membranes is highlighted by their ability to selectively reject different dissol