Research Abstracts

There are eutrophic waters on the west side of Algeria that contain pathogens like Cryptosporidium and Gardia as well as Algae. Specific pre-treatment and clarification systems have to be utilised prior to treatment with membrane systems. The paper describes the clarification process that has been s

The behaviour of sulfonated polyethersulfone membranes in the reverse osmosis treatment of aqueous solutions containing ammonium, cyanide and sulphate ions is described in this paper. Experimental tests were performed in an INDEVEN planar membrane test module, which provides data concerning the beha

One square kilometer of atmospheric air contains, in most regions around the globe, 10,000 to 30,000 m3 of pure water. The extraction of water from air (EWA) patented technology, based on the extraction of air humidity into water stream, was developed for large-scale water supply, up to 1,000 m3/d.

One of the most critical problems in developing countries is the lack of drinking water. People in these regions are supplied with surface water, which contains a significant amount of microorganisms that can cause several diseases. In fact, one of the main causes of infantile mortality is the high

Recent statistics show that currently 2.3 billion people live in water stressed areas and among them 1.7 billion live in water scarce areas. The situation is going to worsen further in the coming years. Better water conservation, water management, pollution control and water reclamation are all part

The desalination unit UTAIM using the solar multiple condensation evaporation cycle principle (SMCEC) is confronted with the problem of heat-exchange surface plugging by dihydrate calcium sulphate. The aim of this work is the prevention of this scale problem by using chemical inhibitors. The kinetic

This paper describes the construction and operation of shipboard desalination plants. This innovation provides a means of supplying s fresh water to almost every location on the Earth, especially to ports and towns on the shores of arid areas and deserts with hot and dry climatic conditions. The sys

A seawater desalination plant with an average daily drinking water production of 1.000 m3/d is planned by imb+frings watersystems and Synlift for an island in the Arabian Gulf. The plant is supplied by a stand alone 750 kW wind energy plant as on grid. The water treatment plant with open intake is p

Nowadays, according to new environmental regulations, a reduction of waste volume is required. Because of this limitation, only two ways of elimination will be considered: incineration and land application. In this context, a global energetic study of a wastewater and sewage sludge treatment pilot s

The aim of this paper is to study the thermal behaviour of a solar air heater as a source of energy for drying agricultural products. The output temperature and velocity of the drying air were first evaluated, and a mathematical formulation of the physical process of solar drying based on convention