—The most important nutrients in controlling water
quality are: carbon, nitrogen and phosphorus. They are
essential to the growth of all living organisms. These are the
nutritional pillars of bacteria, fish, trees and humans.
Unfortunately, when a water body or plan becomes rich in
these nutrients, particularly phosphorus, this causes some
organisms such as algae to grow in abundance which makes the
environment ugly. These algae are usually undesirable and
may inevitably cause changes in pH, dissolved oxygen, colour
and turbidity of the water environment, hence the environment
becomes eutrophic and its color turns to green.
To address and solve the eutrophication issue, the amount of
phosphorus discharged into the receiving milieu must be
reduced; and this constitutes the main purpose of our research.
We proceeded so as to make a physico-chemical phosphorus
removal from urban waste water. The physico-chemical
treatment is based on looking for and finding the optimal dose
of the various added coagulants.
The aim of our work is to confirm the efficiency of the
chemical treatment through use: lime, ferric chloride and
aluminum sulfate as coagulant for this treatment.
—Nutrient, phosphorus, algae, eutrophication,
Nawel Nedjah is with Preparatory School Science and Technology
(EPST) Annaba, Algeria (e-mail: email@example.com).
Oualid Hamdaoui and Nabila Laskri are with University Badji Mokhtar
Faculty of Engineering Sciences/Laboratory of Environmental Engineering
Preparatory School Science and Technology (EPST), Annaba, Algeria (email:
Cite:Nawel Nedjah, Oualid Hamdaoui, and Nabila Laskri, "Phosphorus Removal of Urban Wastewater by Physico- Chemical Treatment: Waterways Euthrophication Prevention," International Journal of Environmental Science and Development vol. 6, no. 6, pp. 435-438, 2015.