Research Abstracts

For small settlements sanitation, constructed wetland systems offer a suitable social economic alternative to the classic wastewater treatment plants. In order to study the treatment mechanisms occurring in the soil–plant system, we set up a small-scale pilot wastewater treatment plant composed by a

Enhanced ultrafiltration by the addition of poly(ammonium acrylate), with two average molecular weight 8000 Da and 15 000 Da, for the removal of Cd(II) from aqueous solutions has been studied. The solution is processed by ultrafiltration using a membrane with pore sizes (10 kDa) small enough to bloc

Advances in wastewater treatment technology have led many to predict that planned wastewater reuse in agriculture will soon become more common in some regions of the world which face acute problems of water quality and quantity. The use of ecologically friendly wastewater disinfection techniques cou

The analysis of the hydrobiologic parameters in the coastal zone of Raoued (Gulf of Tunis) was undertaken during 2004 to 2006 period, following the rainfall discharges of sebkhet Ariana. High concentrations of ammonium and orthophosphates, the major elements, characterized the eutrophic state in the

The wide variability in the agronomic behaviour of the olive tree varieties with respect to the irrigation by treated wastewaters is an indicator of the genetic diversity of the olive tree in our country and of its adaptation to this cropping mode. On the agronomic plan, the results obtained show th

Forward osmosis (FO) is an osmotic process that uses a semi-permeable membrane to effect separation of water from dissolved solutes by an osmotic pressure gradient. Unlike reverse osmosis (RO), FO does not require high pressure for separation, allowing low energy consumption to produce water. Howeve

Although submerged microfiltration is widely used as a pretreatment process for surface water treatment and RO desalination, its high energy consumption is a major drawback compared to conventional pretreatment. Especially, aeration during filtration is an energy-intensive step in most submerged mem

Fouling is one of the most serious problems in seawater desalination using reverse osmosis (SWRO) which is important to lower the production cost of desalinated water. For efficient operation of the SWRO plant, accurate models are crucial to decide the optimal operating condition and cleaning operat

An artificial neural network (ANN) was developed to predict the performance of a seawater reverse osmosis (SWRO) desalination plant, and was then applied to the simulation of feed water temperature. The model consists of five input parameters (i.e., feed temperature, feed total dissolved solids (TDS

Seawater desalination of interest is rising to overcome water scarcity. Especially, desalination using RO membranes is increasingly being used for production of drinking water for brackish and/or seawater. SWRO has operational problems that can be caused by various membranes fouling including partic