Alexander Szabo and Oscar Engle - Svenskt Vatten
Alexander Szabo and Oscar Engle - Svenskt Vatten
Alexander Szabo and Oscar Engle - Svenskt Vatten
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Contents <br />
List of abbreviations...........................................................................................................................................iii<br />
Summary.............................................................................................................................................................iii<br />
Acknowledgements .............................................................................................................................................v<br />
1. Introduction ...................................................................................................................................................12<br />
1.2 Background .................................................................................................................................................12<br />
1.3 Objective......................................................................................................................................................15<br />
2. Waste Water Treatment Ponds Technology...............................................................................................16<br />
2.1 Introduction to Waste water treatment ponds ...........................................................................................16<br />
2.2 Pretreatment.................................................................................................................................................17<br />
Screening ...................................................................................................................................................17 <br />
Grit removal ..............................................................................................................................................17 <br />
2.3 Pond Types ..................................................................................................................................................17<br />
Anaerobic ponds .......................................................................................................................................17 <br />
Facultative Ponds......................................................................................................................................18 <br />
Maturation ponds ...................................................................................... Error! Bookmark not defined. <br />
Mechanically aerated ponds ..................................................................... Error! Bookmark not defined. <br />
2.4 Degradation processes ................................................................................................................................18<br />
Removal of pollutants in Waste water treatment ponds ......................................................................18 <br />
Aerobic degradation .................................................................................................................................18 <br />
Anaerobic degradation .............................................................................................................................19 <br />
Sedimentation...........................................................................................................................................19 <br />
Disinfection................................................................................................................................................19 <br />
3. Pond Hydraulics ............................................................................................................................................21<br />
3.1 Retention time .............................................................................................................................................21<br />
3.2 Complete-mix model ................................................................................ Error! Bookmark not defined.<br />
3.3 Plug flow.................................................................................................... Error! Bookmark not defined.<br />
3.4 Dispersed flow........................................................................................... Error! Bookmark not defined.<br />
3.5 Hydraulic design ....................................................................................... Error! Bookmark not defined.<br />
Short Circuiting........................................................................................... Error! Bookmark not defined. <br />
Building several ponds in series................................................................ Error! Bookmark not defined. <br />
Baffles ......................................................................................................... Error! Bookmark not defined. <br />
vii <br />
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