الفهرس 
Influence of using packing materials on the uasb performance
Table of contentsOnly 14 pages are availabe for public view
 |  | from | 104 |  |  |
| | | from | 104 | | |
Abstract
A lot of researchers studied the main factors affecting the performance of using the Up flow Anaerobic Sludge Blanket (UASB) reactors for domestic wastewater treatment. The previous researches and experiments to investigate some parameters which affecting the treatment process using UASB reactors such as Hydraulic retention time, sludge blanket thickness, mode of operation (Continues and feed {u2013} feed less), feed less period and internal media inside the reactor. This study investigate the influence of using pieces of sponge used as an internal media (packing materials) on the UASB performance in treating the municipal wastewater. The main purpose of using the internal media inside the reactor is to allocate large surface area for bacterial community growth. Two parameters have been checked during the experimental work. The first parameter is the retention time and the second parameter is the sponge (packing material) thickness. Retention time for continues operation (6 hr., 8 hr. and 10 hr.) and Sponge thickness (20, 40 and 60cm). A pilot scale setup was designed and constructed at Zenien wastewater treatment plant (Zenien WWTP) in Giza Governorate, Egypt. It was operated under ambient environmental conditions. Increasing the backing material thickness gives better removal efficiency for the TSS and VSS, however, it gives worst removal efficiency for the COD and BOD.The optimum hydraulic retention time is 6 hrs for COD, BOD, TSS and VSS removal efficiencies and The optimum backing material thickness from 20 to 40 cm