Evaluation for treatment steps in Mostorod drinking water treatment plant

Mostorod Drinking Water Treatment Plant [Mostorod DWTP] is one of the biggest water treatment plants in Cairo. The intake of Mostorod DWTP is located 8 km from the beginning of Ismailia Canal and this region is polluted with organic compounds such as alkanes, PAHs and chlorinated hydrocarbons. Mostorod DWTP serves east of Cairo especially Masr El-Guidida, Nasr City, El-Mazallat and North Shubra regions and its distribution system expands for more than 100 km[2]. It applies conventional treatment like other water treatment plants in Egypt. Samples were collected after 3 different steps in Mostorod DWTP [after sedimentation, after filtration and after post-chlorination]. The concentration of n-alkanes, PAHs and chlorinated hydrocarbons were determined and the removal percent after each step was calculated. Pre-chlorination and sedimentation steps had the highest removal for organic compounds followed by post-chlorination step due to usage of chlorine as disinfectant and its role in oxidation of organic compounds. Filtration step had the lowest removal for organic compounds due to absence of oxidants in this step. Traces of organic compounds are still present is storage tank of Mostorod DWTP due to insufficient oxidation

effect of industrial waste of oil companies on the distribution of organic pollutants in Ismailia Canal Water

Survey for Ismailia Canal fresh water indicated normal conditions for physico-chemical parameters. Total dissolved solids and all cations and anions were within the acceptable limits. The concentration of n-alkanes, aromatic hydrocarbons, polycyclic aromatic hydrocarbons [PAHs] and chlorinated hydrocarbons were detected in three sites. Site 1 [intake of Mostorod drinking water treatment plant], Site 2 [after oil companies], and site 3 in the middle of the canal. Site 2 had the highest concentrations of the studied hydrocarbons due to drainage of the oil from oil companies and discharge of the industrial waste from other companies into the canal water. The concentrations of organic compounds were decreased after that due to dilution. The concentration of chlorinated hydrocarbons was too much lower than that of n-alkanes, aromatic hydrocarbons and PAHs

Simple symptoms as the principle manifestations of invasive brain and CNS lesions: two case reports from the UAE of a crying infant and a child with strabismus for many years

Invasive lesions of the brain and nervous system as a group is one of the most important causes of mortality and disability in children. Early diagnosis and treatment are the cornerstones in the development of an effective approach to decrease mortality and to avoid severe disability from such lesions. Unfortunately, brain and CNS lesions may manifest early with simple or subtle symptoms and remain undiagnosed for a long period. We describe two cases of invasive brain lesions manifest early with simple symptoms which were diagnosed at our clinic after a long period without diagnosis. The first patient was a crying infant secondary to brain atrophy, and the second patient was a child with strabismus and abnormal eye movements for several years secondary to brain stem space occupying lesion. We conclude that a much greater care should he taken in such cases with a full neurologic and radiologic evaluation including CT and MRI before any form of treatment is under taken