concluded that sewage water is the richest source of micro- and macronutrients and this goals for the better progress of vegetation. However, sewage should be handled prior to its reuse for agriculture in order to reduce the risks of harmful results on human and animal health. We treat wastewater to take away the most important contaminants and dangerous micro organism, similar to E. coli. To do that, we send the raw sewage via a number of processes in our plants. Bacteria referred to as activated sludge plays a serious role in the therapy process. The activated sludge
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