DO variations in facultative stabilisation ponds
by Ali Gheisarifar
International Journal of Environmental Engineering (IJEE), Vol. 7, No. 3/4, 2015

Abstract: Stabilisation ponds have recently attracted more attention as a natural wastewater treatment method and are currently being used in almost all developed and developing countries across the globe. The technical, economic, energy saving and operational advantages of such treatment systems have motivated many researchers in these countries to study the improvement of stabilisation ponds in order to increase their efficiency and also to lift the difficulties in their operation. Stabilisation ponds derive their justification as a reliable and easy-to-operate treatment system from the fact that the high oxygen demand by aerobic treatment systems requires costly electromechanical aeration equipment whereas stabilisation ponds do not call for such great investments as the process of photosynthesis in ponds generates an abundance of oxygen supply in excess of the system's requirements. In the present study, two stabilisation ponds operating in Isfahan, Iran, were selected and the variations in their dissolved oxygen levels were measured in the plant effluent at various depths and at different distances between the inlet and outlet points. The results revealed that oxygen generation was far in excess of the oxygen demand by the system.

Online publication date: Wed, 24-Feb-2016

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Environmental Engineering (IJEE):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com