This study shows the sensitivity of the Pressure Decay Test and the effect on gas diffusion on the sensitivity of the study. The test compare results of single and multibore hollow fiber membranes....

The paper presents the general functioning and efficiency of the backshock with Multibore?ultrafiltration membranes which allows operation at higher flux and recovery rates. In addition, data from a pilot unit operated on two different types of water examines the mechanical strength due to the backshock on the membranes. Efforts to optimize and...

Ultrafiltration membrane plants are typically operated within supplier process recommendations. Experienced plant operators may decide to test modifications of some process related parameters to evaluate their effect on the running costs. The paper presents long-term operation of the Keokuk Municipal Waterworks, Iowa, USA, where such experiments ha...

The subject of this summary is the comparison between continuous and intermittent coagulant addition upstream of ultrafiltration membranes to remove organic compounds and thereby minimize the biological fouling of reverse osmosis membranes. In addition to the results of this comparison, the paper presents a new type of measurement called the ?Coati...