Authors: Ouazzani N Bouhoum K Mandi L Bouarab L Habbari Kh Rafiq F Picot B Bontoux J Schwartzbrod J
Publish Date: 1995/06/01
Volume: 31, Issue: 12, Pages: 75-80
Abstract
N Ouazzani K Bouhoum L Mandi L Bouarab Kh Habbari F Rafiq B Picot J Bontoux J Schwartzbrod Wastewater treatment by stabilization pond Marrakesh experiment Water Sci Technol 1 June 1995 31 12 75–80 doi https//doiorg/102166/wst19950462N Ouazzani K Bouhoum L Mandi L Bouarab Kh Habbari F Rafiq B Picot J Bontoux J Schwartzbrod Wastewater treatment by stabilization pond Marrakesh experiment Water Sci Technol 1 June 1995 31 12 75–80 doi https//doiorg/102166/wst19950462This paper presents results of two years of investigations on three types of wastewater stabilization pond treatment systems purifying a raw urban wastewater in the arid climate of Marrakesh The systems tested were two lined water hyacinth ponds two lined facultative ponds and one anaerobic pond During the course of the experiment organic load nutrients and parasitical load were studied Results show that the macrophytic ponds were more efficient to reduce organic load 90 of TSS and 78 of COD that the microphtic ponds these ones were more efficient to eliminate nutrients NTK 71 NH4 60 Ptotal 80 and PO4 62 The anaerobic pond presents a lower efficiency less than 40 for organic and less than 20 for nutrients About sanitary concerns all of the year the macrophytic and microphytic pond effluents correspond to B category WHO 1989 The anaerobic pond yields B category effluent except in autumn when it corresponds to C category
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