Water and Sanitation

Poor Wastewater treatment and solid waste management in Africa and its impact on water treatment costs

Stephen Siwila
389 Views
Started by Stephen Siwila on
05 Feb 2015 at 08:31
Manager- WATER SUPPLY AND ENVIRONMENTAL Department, THE COPPERBELT UNIVERSITY (ZAMBIA)
Know-how: Point of Use, Community Supply, Bulk Water Transport , Pipeline, Dams
Social
1. What are the main issues which have made wastewater treatment in most African countries a non-stater or very poorly considered. 
2. Do African governments understand that treatment wastewater properly and proper wastewater handling results in reduced water treatment costs. e.g. if a sewage treatment plant discharges just upstream the water treatment plant the costs of water treatment will be so high due to nutrient overload into the stream or intake reservoirs
3. What exactly can we do to change the current situation of neglected wastewater treatment in the continent e.g. some countries even discharge their waste into oceans or seas.
4.What solid waste management??? what can be done its in fact worse than wastewater management in most African countries, any beneficial way of handling solid waste????
Industry Tags: 
  • WaterTreatmentTreatment Methods

Comments

lyseconcept jean Marius
French English
Stephen
La plus part des pays développés ont des systèmes d'assainissement collectif. Un dispositif couteux et totalement inefficace : plus de 40 millions de tonnes d'excréments sont transformés en boue annuellement. l'infrastructure de collecte et de traitement sont hors de prix.
L'afrique n'ayant pas les moyens financiers pour mettre en place un tel gâchis est revenu aux méthodes les moins couteuses.
D'un coté la défécation à l'ar libre (aucun coût). l'implantation de réservoir de stockage des excréments au pied des bâtiments. Une fois rempli, ces réservoirs sont soit vidés dans la rue, soit un vidangeur les épand sur un champ ou les déverse dans le fleuve.
Les stations d'épuration filtre les effluents, séparent la masse organique du liquide qui est envoyé dans le fleuve et les résidus sèchés sont envoyés en décharges des déchets ménagers.
C'est pas mieux pour ne pas dire que c'est pareil.
Enfin une vraie invention est sur le marché depuis peu: le concept d'Assainissement Biologique.
Plus d'infrastructure de collecte et de traitement collectif. les eaux usées sont traitées individuellement sur la parcelle et le rejet d'eau arrose la biodiversité végétalisée.
l'Assainissement individuel élimine totalement les excréments sans aucune production de boue
Comme le rejet d'eau biologique arrose le jardin potager , le concept permet d'économiser la consommation d'eau potable.

Stephen
More the share of the developed countries have systems of collective cleansing. An expensive and completely ineffective device: more than 40 million tons of excrements are transformed into mud annually. the infrastructure of collection and treatment are out of price.
Africa not having financial means to set up such a waste returned to the least expensive methods.
Of with dimensions defecation with rear free (no cost). storage tank installation of the excrements at the bottom of buildings. Once filled, these tanks either are emptied in the street, or a cesspool clearer spreads them on a field or pours them in the river.
The sewage treatment plants filters the effluents, separate the organic mass from the liquid which is sent in the river and the residues dry are sent in discharges of household wastes.
It is not better not to say than it is similar.
Finally a true invention is on the market recently: the concept of Cleansing Biological.
More infrastructure of collection and collective treatment. the waste waters are treated individually on the piece and the rejection of water sprinkles the vegetalized biodiversity.
The individual Cleansing completely eliminates the excrements without any production from mud
As the biological water rejection sprinkles the vegetable garden, the concept makes it possible to save the drinking water consumption.
Jean Marius
Florin-Constantin MIHAI
Check the Global Atlas of Excreta, Wastewater Sludge and Biosolids Management

http://esa.un.org/iys/docs/san_lib_docs/habitat2008.pdf

AND

Solid Waste Management in the World’ s Cities 2010_UN-HABITAT

https://thecitywasteproject.files.wordpress.com/2013/03/solid_waste_mana...
Support
Please feel free to submit your feedback below
Feedback

CAPTCHA
Image CAPTCHA
Enter the characters shown in the image.