Research Abstracts

The work aimed to determine the effectiveness of the treatment of wastewater generated by the meat industry in a hybrid system combining biological methods of activated sludge (in an SBR reactor) and reverse osmosis. The tests carried out on the wastewater from the meat processing plant Uni-Lang in

Two step coagulation using iron coagulant (FeCl3) with anionic polyelectrolyte in the first step and aluminum coagulant in the second one was made to reduce the negative effect of the fouling phenomenon. The process was operated on the commercial scale. The raw water was the blowdown water from the

The contamination of water by sulphate is a pollution problem that has increased in severity in recent decades. The behaviour of cellulose acetate membranes in the treatment by reverse osmosis of aqueous sulphate solutions is described. Experimental essays were performed in a commercial cross flow t

Studies concerning the removal of natural organic matter (NOM) from surface and tap water by nanofiltration are presented. The separation and transport characteristics of nanofiltration membranes were determined. The degree of NOM coefficient and water hardness removal from surface water and a reduc

The objective of this study was to investigate the influence of MWCO, pressure, SDS concentration, salt amount and temperature on surfactant removal and permeate flux. Intersep Nadir membranes made from polyethersulphone (PES) and polysulphone (PS) were used. With the addition of a mineral salt to t

Cotton dyeing using reactive dyes generates warm wastewater strongly colored, containing suspended solids,concentrated NaCl and widely varying acid amounts. Dyeing one kilogram of cotton with reactive dyes requires from70 to 150 L water, 0.6 kg NaCl and 40 g reactive dye. We have worked out a proces

There are many water shortage problems currently in the world, some of which are more serious than others. All have different solutions. In several of them membrane technology can make a great contribution since membranes have the ability to produce water of exceptional purity that can be recycled f

Operation of an experimental RO plant connected directly to a wind system without energy storage was studied. The data obtained confirm the wide spectrum of operation of the plant with respect to the power available and the operation of the system. The development of an RO plant for variable charges

The tendency of solutes in input water to precipitate efficiency lowering scale deposits on the membranes of reverse osmosis (RO) desalination systems is an important factor in determining the suitability of input water for desalination. Simulated input water evaporation can be used as a technique t

This paper presents a new maritime lifesaving multiple-effect solar still design where several extended wicks feed seawater to their evaporating areas by capillary force, and the resulting water vapor diffuses and condenses on facing wicks with the condensate flowing through the wicks into storage b