Modeling and optimization of membrane lifetime in dead-end ultra filtration

Abstract

a b s t r a c tIn this paper, a membrane lifetime model is developed and experimentally validated. The lifetime model is based on the Weibull probability density function. The lifetime model can be used to determine an unambiguous characteristic membrane lifetime. Experimental results showed that membrane lifetime shortens if the average membrane fouling status increases. The lifetime modeling results are then used to determine the economic lifetime of membranes. Subsequently, the economic lifetime of a membrane is used to optimize membrane lifetime, i.e. minimizing the total costs. Based on the experimental results it can be concluded that the total costs are minimal if the average membrane fouling status is approximately 1.7× the membrane resistance.

The data on the removal of turbidity and biological agents in spent filter backwash by bed ceramic in water treatment process

“…There are several methods for washing and cleaning of ceramic membrane, reverse wash is one of the important ways in the industry in which treated wastewater entered to the membrane reversely (from outside to inside) again by a membrane, and with the help air compressors, the air pressure was equal to 5 bars. This measure causes a significant part of the blocked pores of the membrane is opened again and reach to initial performance [1] , [2] , [3] , [4] , [5] , [6] .…”

A metrics-based approach to preparing sustainable membranes: application to ultrafiltration

“…48 The integrity of membranes can be checked with pressure hold tests or bubble tests. 49 In what follows, the 3-stage membrane preparation methodology in Table 1 is followed and metrics in Tables 2-5 are applied. HSPs used for solvent shortlisting first need to be explained as well as the experimental setups of membrane preparation and characterization.…”

Pressure driven inside feed (PDI) hollow fibre filtration: Optimizing the geometry and operating parameters

“…Ultrafiltration (UF) and microfiltration (MF) membranes have been widely used for water treatment since the 1980s [1][2][3]. The early stage membranes tended to be UF with a fine or medium pore size.…”