Abstract:
The present work investigate the suitability of the discharged waste water
from the Khartoum Refinery company (KRC) facility of Elgili located at
about 73 km north of Khartoum .
The objective of the study is to dispose of the waste water discharge of
Khartoum refinery using suitable tree crops.
Six different tree species are selected this tree is: Acacia tortilis, Eucalyptus
camadulensis, Azadirachta indica, Grewia tenax, Eugenia Jambolana and
Conocarpus erectus
Two experiments were conducted, the first experiment was a pot nursery
experiment where the same six tree species were irrigated with either
refinery waste water and tap water. The treatment was replicated three times.
The second was a field trial experiment, where six different trees species
both indigenous and exotics were used (ACRBD). A design was used with
four replications.
In addition a chemical and physical soil analysis was undertaken including
water soluble cations and anions, pH, EEC, OC, total N content and particle
size distribution
water analysis for BOD, pH, EC soluble cations and oil
content was performed Measurement from the field and nursery pot
experiment included total pant height root collar diameter number of leaves
and number of branches. Date collected was subjected to analysis of
variance and the statistical method system.
Results showed highly significant differences between the tree species
treated with discharged refinery waste water in the field trail. The most
tolerant species to refinery waste water were Concarpus erectus and Acacia
tortilis while the most sensitive was Grewa tennax
Generally the remainder of the species shows significant differences
between them. Result from the nursery pot experiment followed the same
trend in variation between the six tree species in addition to a significant
variation between the two irrigation treatments.
The study recommends the planting of Conocarpus erectus and Acacia
tortillas this for their tolerance to refinery waste water and their better
performance and study and adaptation to the planting site
