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B12 deficiency can also impair neurotransmitter production and the breakdown of homocysteine, which has been linked to mood disorders and a higher risk of dementia
- For non-vegetarians Lamb liver and kidney Clams Sardines Salmon Tuna Trout Eggs - For Vegetarians Milk Fortified milk Yogurt Fortified cereals Cheese - For Vegans Nori Fortified soy milk or cashew milk Fortified natural yeast Fortified tofu 2
George Ayoub Faculty of Engineering and Architecture American University of Beirut OUTLINE Overview of the Conventional Wastewater Treatment Process Discussion of Existing Biological Treatment Technologies Examples from the Mediterranean Region Examples from the Lebanese Context Conventional Wastewater Treatment Process Pretreatment involves: Screening Grit Removal Oil separation Flow equalization Chemical Treatment is used in conjunction with the physical and chemical processes: Chemical precipitation Adsorption Sludge Treatment and Disposal involves: grinding, degritting, blending, thickening, stabilization, conditioning, disinfection, dewatering, heat drying, thermal reduction, ultimate disposal Disinfection can use: Chlorine compounds Bromine Chloride Ozone UV Radiation Biological Treatment In the case of domestic wastewater treatment, the objective of biological treatment is: To stabilize the organic content To remove nutrients such as nitrogen and phosphorus Types: Aerobic Processes Anoxic Processes Anaerobic Processes Combined Aerobic-Anoxic-Anaerobic Processes Pond Processes Attached Growth Suspended Growth Combined Systems Aerobic Maturation Facultative Anaerobic Activated Sludge Process The aeration tank contains a suspension of the wastewater and microorganisms, the mixed liquor
