case study of green belt station-khartoum Study of algal distribution and quantity in treated wastewater :

Abstract EN

This work concentrated on laboratory investigations for a practical for aerobic, facultative and maturation waste stabilization ponds model constructed at the Green Belt of Khartoum.

Wastewater treatment using biological means is a natural, integrated, effectual and economical process that depends on combined and bacterial and algal activities with aid of solar energy and certain nutrient materials found in wastewater.

This biological method used for wastewater treatment is the most appropriate one from an environmental point of view.

The method relies fundamentally on the ability of algae to self purify water.

Studies conducted in this research showed that the presence of certain algal species indicates pollution, while other types signify that the clean water yet received different stages of natural purification that could lead to production of clean water that may be used for agricultural purposes.

About 23 types of algal cells have been model identified in the experimental wastewater stabilization ponds model.

They have been grouped as follows: a.

Diatomphyceae b.

Cyanphyta c.

Chlorophyta, and d.

Euglenophyta.

Genera have been identified where upon it was noticed the increase in production (number of cells per ml), while there is a decrease in species and an increase in production during the hot season.

The factor of climate has a paramount role influencing efficiency of waste stabilization pond treatment.

This is because of the role of green algae and certain diatomaphyceae in treatment due to their connection to elevated temperatures and their role in photosynthesis.