الفهرس 
MATERIALS AND EXPERIMENTAL TECHNIQUESOnly 14 pages are availabe for public view
 |  | from | 219 |  |  |
| | | from | 219 | | |
Abstract
The purpose of Wastewater Treatment Projects is the
disposal of treated water or its reuse ,without causing any
harmful effect on the Environment.
The Carelessness was always the share of wastewater
projects in poor countries ,because of lack of financial
sources and public awarness of polutional impact
environment
Nowadays, hence it becomes a fact
sources will no longer capable of meeting
demands ,therefore the wastewater treatment
be important and essential .
that the water
the exceeding
and reuse shall
There are different methods known in wastewater
treatments ,among them the Aerated Lagoons is distinctive
by its simplicity in construction and operation ,low
maintainance and less in land requirements. All of these
advantages make it suitable for poor developing countries.
This thesis concerned about studying the aerated
lagoons and identifying the factors affecting its
efficiency •
A Basins resembling the lagoons were designed in the
lab. and supplied by oxygen required for biological
stabilization by compressed air ,the samples of wastewater
were collected from one of the pumping stations in cairo.
Some parameters were measured to determine the
efficiency of the aerted lagoons during different retention
periods (2-6).These parameters are:
The Ph value , The Dissolved Oxygen, The Biological Oxygen
Demand , The Total Suspended Solids, The Fixed and The
Volatiles, The Total Dissolved Solids, The Fixed and The
Volatiles , The Total Solids, The Fixed and The Volatiles,
The Setliability , and The Sludge Volume Index.
The results of this study revealed that 4 days
retention time is enough to achieve very high removal
ratios of organic loads up to 95\.
ch