الفهرس 
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Abstract
Water scarcity is a global concern that threats all life aspects, especially human life
so, searching for a way to minimize the negative effects of water scarcity is the
golden solution. This goal was achieved by searching for alternative water sources
such as treated wastewater to reuse it besides freshwater resources in different
fields such as irrigation. In this study, a fixed bioreactor was used as a simulation
of the biological treatment technology depending on agricultural wastes instead of
high-cost plastic media. A laboratory scale-pilot consist of three rectangular tanks
with dimensions of 70×50×30 cm was established to perform the suitable treatment
of pasta wastewater. The pilot began with a primary sedimentation tank followed
by FBR (Fixed Biofilm Reactor) tank, after that water was fed into a final settling
tank to remove inorganic substances produced from the treatment process. Banana
stem and Rice straw were used as bio-carriers with a filling ratio of 25% to
increase the microbial population inside the FBR tank. After analysing the
physiochemical parameters of pasta wastewater, the final COD, BOD, TSS, TN,
and TP concentrations of pasta wastewater after the final settling tank in case of
using banana stem were 37.3, 28.6, 42.4, 5.9, and 0.22 mg/l, respectively. In the
case of using rice straw as a packing media, the final COD, BOD, TSS, TN, and
TP concentrations were 78.6, 63.4, 49.9,7.1, and 0.31 mg/l, respectively. It was
proved that using banana stem was more effective than rice straw in reducing pasta
wastewater pollutants, and the final effluent was suitable to be used for Fruitless
irrigation as the final concentrations were below the allowable limitations of
Egyptian code for the use of treated wastewater in agriculture, code No. 501/2015.