Wastewater management in Greece: experience and lessons for developing countries

2001 ◽  
Vol 44 (6) ◽  
pp. 163-172 ◽  
Author(s):  
K. P. Tsagarakis ◽  
D. D. Mara ◽  
A. N. Angelakis
Keyword(s):  
Developing Countries ◽  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Development Economic ◽  
Wastewater Management ◽  
Municipal Wastewater Treatment ◽  
Key Issues ◽  
Treatment Policies ◽  
Source Of Information ◽  
Selection Of

Technologies to treat wastewater are now well established and are capable of producing almost any degree of purification. The main issue surrounding the selection of a given process lies in deciding which is the most appropriate and applicable technology for the particular social, political and economic environment. This paper concentrates on the development of the municipal wastewater treatment sector in Greece. It examines the deficiencies and problems arising from the implementation of wastewater management policies and makes a number of suggestions and recommendations. The areas considered include, among others, historical development, economic development and pollution control, key issues for wastewater treatment policies and lessons applicable to developing countries. It is hoped that this study will be a valuable source of information for countries embarking on nationwide sanitation projects.

scholarly journals Start-up phase of a UASB-septic tank used for high strength municipal wastewater treatment in Mexico

2017 ◽  
Vol 12 (2) ◽  
pp. 287-294 ◽  
Author(s):  
A. L. Santiago-Díaz ◽  
M. L. Salazar-Peláez
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Oxygen Demand ◽  
High Strength ◽  
Upflow Anaerobic Sludge Blanket ◽  
Septic Tank ◽  
Anaerobic Sludge ◽  
Wastewater Management ◽  
Municipal Wastewater Treatment ◽  
Start Up

The objective of this work was to assess the performance during the start-up phase of a Upflow anaerobic sludge blanket (UASB)-septic tank for municipal wastewater treatment in Mexico City. A lab scale UASB-septic tank (62 L total volume, acrylic), consisting of three chambers treated high strength municipal wastewater at ambient temperature (16 °C–24 °C), under 72 h Hydraulic retention time (HRT) during three months. Total and soluble chemical oxygen demand (COD), total biological oxygen demand (BOD5), total solids and total suspended solids (TSS) removals were 75.2 ± 6.5%, 54.8 ± 6.7%, 64.2 ± 4.8%, 25.9 ± 5% and 82.9 ± 5%, respectively. These results are comparable with the removals reported in other works with similar arrangements; and are similar even with average removals of COD, BOD and TSS in UASB reactors installed in Latin America. The good performance obtained showed that it is possible to achieve a short start-up period with UASB-septic tank if it is inoculated with anaerobic sludge. These findings also evidenced the feasibility and reliability of the UASB-septic tank system for decentralized wastewater management in Mexico.

Impacts of Municipal Wastewater Effluents on Canadian Waters: a Review

1997 ◽  
Vol 32 (4) ◽  
pp. 659-714 ◽  
Author(s):  
P.A. Chambers ◽  
M. Allard ◽  
S.L. Walker ◽  
J. Marsalek ◽  
J. Lawrence ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Habitat Degradation ◽  
Sewage Treatment ◽  
Aquatic Organisms ◽  
Integrated Approach ◽  
Wastewater Management ◽  
Municipal Wastewater Treatment ◽  
Combined Sewer Overflows

Abstract Domestic sewage is a major threat to receiving waters throughout the world. In Canada, a high proportion of the population (81%) is served by municipal wastewater treatment facilities. Nevertheless, discharges from wastewater treatment plants, stormwater sewers and combined sewers have caused adverse impacts on some lakes, rivers and coastal waters. The most publicly recognized impacts are shellfish harvesting restrictions and beach closures resulting from microbial contamination. Habitat degradation and contamination also occur and these, in turn, have altered the abundance and diversity of aquatic organisms. Our findings on the effects of municipal wastewater discharge suggest that there is a need to review sewage treatment requirements in Canada. Further research is also required on the interactive and cumulative responses to habitat degradation and to long-term exposure to persistent and bioaccumula-tive pollutants. Finally, an integrated approach to wastewater management is needed that addresses loadings from treatment plants, stormwater sewers, combined sewer overflows and other wastewater sources.

Sign in / Sign up

Export Citation Format

Share Document