IDEAS home Printed from https://ideas.repec.org/a/epw/ejgeo0/v4y2023i4id16410.html

Feasibility Study of the Implementation of a Wastewater Treatment Plant in the City of Tulear Madagascar 2018

Author

Listed:
  • Andrianaivoravelona Rafihavanana Rajaona

    (University of Antananarivo, Madagascar)

  • Pierre Hervé Ravelonandro

    (University of Antananarivo, Madagascar)

  • Antsatiana Ravaloera

    (Autorité Nationale De l’Eau et de l’Assainissement (ANDEA), Madagascar)

  • Lova Marcellin Andriamanampisoa

    (Autorité Nationale De l’Eau et de l’Assainissement (ANDEA), Madagascar)

Abstract

The city of Tulear is undergoing environmental degradation. The wastewater is heavily polluted, the average values observed for biological oxygen demand (282,347 ± 76,907 mg.L-1), chemical oxygen demand (579,302 ± 161,102 mg.L-1), and suspended solids (859,114 ± 816,707 mg.L-1) are above the standard discharge values. This study allowed us to design a treatment system and to make a technical, economic, environmental and social assessment of the treatment plant. Thus, the treatment method chosen is the physico-chemical process of coagulation – flocculation –filtration. Indeed, for a population of 368,020 inhabitants, the average hourly discharge rate is estimated at 662.436 m3/d. In addition, the number of bars for grids n°1 and n°2 are respectively 34 and 140, the surface of the sedimentation basin is estimated at 204,5m2, the optimal dose of coagulant (Al2(SO4)3) and flocculant (polyacrylamide) for the coagulation-flocculation basin are respectively 300 mg.L-1and 2 mg.L-1and this gives a considerable drop in suspended solids of the order of 15,22 mg.L-1after treatment. For the settling basin, the volume of clarifier is estimated at 306,68m3, finally the sludge produced is estimated at 1613,66 m3.

Suggested Citation

Handle: RePEc:epw:ejgeo0:v:4:y:2023:i:4:id:16410
DOI: 10.24018/ejgeo.2023.4.4.410
as

Download full text from publisher

File URL: https://eu-opensci.org/index.php/ejgeo/article/view/16410
File Function: Abstract page
Download Restriction: no
File URL: https://eu-opensci.org/index.php/ejgeo/article/download/16410/3937
File Function: Full text
Download Restriction: no
File URL: https://libkey.io/10.24018/ejgeo.2023.4.4.410?utm_source=ideas
LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
---><---

More about this item

Keywords

;
;
;
;
;
;
;
;
;

Statistics

Access and download statistics

Corrections

All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:epw:ejgeo0:v:4:y:2023:i:4:id:16410. See general information about how to correct material in RePEc.

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

We have no bibliographic references for this item. You can help adding them by using this form .

If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Support Team (email available below). General contact details of provider: https://eu-opensci.org/index.php/ejgeo .

Please note that corrections may take a couple of weeks to filter through the various RePEc services.

IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.