TITLE:
Grey Wastewaters: Treatment and Potential Reuse in an Arid Climate
AUTHORS:
Ali Mekki, Firas Feki, Mariem Kchaou, Sami Sayadi
KEYWORDS:
Grey Waste Waters, Bioreactor, Soil, Germination, Plants
JOURNAL NAME:
Journal of Water Resource and Protection,
Vol.7 No.7,
May
15,
2015
ABSTRACT: We investigated the effects of treated grey wastewaters on soil
properties, on seeds germination and on plants growth. The application of these
wastewaters for irrigation of the soil and plants gave significant results.
Indeed we noticed improvement of soil water retention capacity (SWRC) by an
average of 12%, soil organic matter content (SOM) which increases by 30% and
enhancement in soil microflora count by 80%. Besides, the germination indexes
of Tomato (Lycopersicon esculentum) and Alfalfa (Medicago sativa)
were increased by an average of 30% and 50% respectively in soil irrigated by
untreated and treated grey wastewaters. Moreover, better growth levels for
tested plant species—Wheat (Triticum durum), Barley (Hordeum vulgare) and Sorghum (Sorghum
bicolor) were obtained in presence of treated wastewaters.