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Abstract

This chapter on the phytoplankton of wastewater reservoirs is based on sixteen reservoirs which were investigated in detail in Israel (Dor et al. 1987a,b; Dor and Raber 1990; Abeliovich this volume; Dor unpublished results). The studied reservoirs are distributed all over the country and they differ considerably in the origin of their effluents which may be a mixture of domestic wastewater and floods, while others also receive manure or industrial wastes. Their volumes vary from 50 000 to 12 000 000 m3 and the depths from 5 to 14 m. Organic contents of the wastewater stored in the reservoirs (as BOD5 filtrate) and total suspended solids (TSS) range widely: 4-160 mg 1-1 and 6-150 mg l-1 respectively. The most common type of reservoirs have a medium loading with BOD5f = 30-60 mg l-1. Ammonia (as N) and total nitrogen contents are around 15-20 and 30-40 mg l-1 respectively. Total phosphate is usually around 5-7 mg l”1. However, at the extremely high loads of dairy effluents, having in certain cases BOD5 up to 10 000 mg 1-1, ammonia content in the reservoir may reach 200 mg l-1 and total phosphate 300-500 mg I-1 (see Abeliovich this volume).

Keywords

Total Suspended Solid Algal Biomass Heterotrophic Bacterium Scenedesmus Obliquus Oxidation Pond 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Inka Dor

There are no affiliations available

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