Graphics Library >> State of the Mediterranean Marin ... >> Wastewater treatment in the ...

Wastewater treatment in the Mediterranean coastal cities

Wastewater treatment in the Mediterranean coastal cities

File type Download Size Language
.pdf .pdf Download 1 mb -
.jpg .jpg Download 338 kb -
Uploaded 19 Nov 2013 by GRID-Arendal
Year: 2013 Author: GRID-Arendal
Description:
The distribution of coastal cities that either lack wastewater treatment facilities or have inadequate treatment facilities (defined as those removing less than 70 to 90 % of the Bio-chemical Oxygen Demand (BOD)) can be used as a proxy to identify areas where potentially deleterious amounts of organic matter are being added to the marine environment. Effective removal of pollutants from wastewater is achieved through secondary treatment that removes, through physical and biochemical processes, organic matter responsible for 70 to 90 % of the BOD. About half of organic-matter pollution from sewage originates from direct, untreated discharges, while less than one-third is in discharges of inadequately treated sewage. 63 % of coastal settlements with more than 2.000 inhabitants operate a wastewater treatment plant, while 37 % do not. Secondary treatment is mostly used (67 %) in Mediterranean treatment plants, while 18 % of the plants have only primary treatment (UNEP/MAP/MED POL an ...
Downloads: 75     Rating: 3
  • Mediterranean cumulative impact model
  • Sea level variations in the Mediterranean
  • Aquaculture in the Mediterranean and Black seas
  • Possible oil slicks detected by satellites
  • Mean concentrations of trace metals and Persistent Organic Pollutants (POPs)
  • Coastal erosion (EU) and fragile ecosystems in the Mediterranean
  • Industrial hazardous waste in the Mediterranean countries
  • Mean surface salinity