Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Dams

Assessment of the DesalinationEffect on ShatAl-Arab

Mohammed I. Al-Hashimi; Falah Alnedawy

Engineering and Technology Journal, 2019, Volume 37, Issue 3C, Pages 385-390
DOI: 10.30684/etj.37.3C.13

The resource of the dulcet water decreasing on our plant. Obstacles and problems that face water resources are the pollution and increasing of industrial wastes because of the human activities, lack of water resources in a place is considered dryness on well as unacceptable quality and quantity. The effect of outstretch and tide in estuaries of rivers increase the concentration of the salt in surface water. The city of Basra suffers from the lack of water discharge and high concentration of salt , wastewater, and the salt wedge ascending from downstream of Shat al – Arab river. The water decrease in quantities due to the decrease of water discharge in Shat al –Arab river from 1300 m3 /s to 1000 m3 /s . Now the water discharge reaches less than 40 m3 /s by the end of 2015. Shat al – Arab river suffers from the shortage of incoming water from rivers, which cause increase of salinity. Proposals are made for resolving some of the questions.

Grain Size Distribution of the Self-Filtration Layer between the Base Soil and the Filter

Yousif A. H. Dallo; Yuan Wang

Engineering and Technology Journal, 2013, Volume 31, Issue 21, Pages 453-464

Some studies suggested a model to determine the grain size distribution GSD curve of the self-filtration layer that is formed at the base soil-filter interface. From these GSD curves the effectiveness of the filters is assessed assuming that the internal stability of the self-filtration layer reflects the effectiveness of the filter. In this paper a critical discussion to that method is presented. Also some essential modifications for the method are suggested. Finally, in disagreement with that method the applicability of usage of the GSD curve of the self-filtration layer to predict the effectiveness of the filter is found to be unreliable.