Organic matter

The pretreatment of raw seawater is necessary to minimize the organic fouling of seawater reverse osmosis (SWRO) membranes. To predict the membrane fouling of the pretreated seawater, the modified fouling index (MFI) with ultrafiltration (UF) was investigated in terms of molecular weight distributio

In this study, titanium tetrachloride (TiCl4), titanium sulfate (Ti(SO4 )2 ) and ferric chloride (FeCl3) flocculation as a pretreatment to seawater reverse osmosis (SWRO) were investigated. Their ability to remove turbidity, seawater organic matter (SWOM) and controlling the feed water quality of SW

This study aims to find news a die of purification for a wastewater reuse. Primary effluent contains organic mineral, dissolved and suspended matter (colloids). Microfiltration or ultrafiltration is adequate for producing disinfected clear water suited for different applications. However, direct fil

For more than 2 years, the extension of the Méry-sur-Oise plant has been producing water from the river Oise, using nanofiltration technology for a production capacity of 140,000 m3/d, a world premiere on surface water. After presenting the reasons for the nanofiltration choice and the treatment pro

This work explores the performances of two types of nanofiltration (NF) membranes (Desal DK and NF200) in the elimination of some selected pesticides presents in water (triazines and urea herbicides). Experiments were carried out on synthetic waters composed from distilled water to which has been ad

Scaling in reverse osmosis (RO) and nanofiltration (NF) systems is generally controlled by limiting the conversion and/or the addition of antiscalants. An alternative approach might be the desupersaturation of membrane concentrate before e.g. the last stage of an RO and/or NF system. A desupersatura