الفهرس Only 14 pages are availabe for public view
 |  | from | 121 |  |  |
| | | from | 121 | | |
Abstract
Using biomass wastes as media to remove wastewater contaminants is environmentally very important to reduce agricultural wastes accumulation and wastewater treatment. This study has been made to remove the nutrients from sewage using some agricultural wastes; cotton stalks wood, sunflower stalks and almond shells. All experimental studies were constructed in El-Berka wastewater treatment plant nearby Cairo city, Egypt.
The objective of this study is to investigate physiochemical and biological effects. In physiochemical effects, agricultural wastes were used as a media by dividing them into three forms (coarse, medium and fine). Parallel column scale experiments were carried out with depths of the media between (8, 12, and 20) cm at flow rate of wastewater into the media around (1L/h). The removal efficiency of the sewage parameters TSS, COD, BOD, N and P for each form were measured. In biological effects, microbiological activities determinations were done for agricultural wastes samples so the degree of biological effect in wastewater treatment can be determined.
The results obtained in this work showed that an increase in the media depth increased the nutrients removal efficiency Re%. Also, when the pieces of agricultural waste around (fine and medium) the nutrient removal efficiency Re% was found to be relatively close and greater than coarse form. Removal efficiencies for nitrogen compounds were more than 50 % and reach to 94% and for phosphoric compounds were 40% to 90%. By comparing between the three types almond shells are better in nutrients removal efficiency than sunflower stalks and cotton stalks wood. These results emphasize the environmentally effectiveness of using cotton stalks wood, sunflower stalks or almond shell as media for wastewater treatment.