Global NEST Journal

ISSN:

Print ISSN: 1790-7632

Electronic ISSN: 2241-777X

Issue 1

Volume number:

5

Publication year:

2003

Publication month:

March

Issue on Wastewater Management

Articles

Wastewater Reuse Criteria In Greece

Andreadakis A., Gavalaki E., Mamais D. and Tzimas A., Pages:9-14

DOI:

https://doi.org/10.30955/gnj.000291

Paper Topic:

General

Issue:

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Abstract

The sustainable management of water resources often requires the identification of wastewater as a valued
source of water. Although the benefits of wastewater reuse and reclamation have increased significantly
in Europe because of the advances in effectiveness of wastewater treatment and disinfection technologies
there is currently no legislation nor guidelines regarding reuse. It is well known that there is a
great variation of wastewater reuse quality criteria applied, mainly related to significant differences in
socioeconomic conditions, environmental policies, available water resources. In this work the parameters
that affect the wastewater reuse criteria in Greece are evaluated, concerning among others reuse
priorities, available treatment plants and effluent characteristics and recommendations are made for
developing future guidelines or regulations for Greece in relation to reuse practices (agricultural, urban,
etc). The intention is not to propose an unquestionable and rigid set of standards, but to present them
on the basis of the rationale developed, in order to form a basis for further consultation, involving all the
interested parties. The recommendations are presented in relation to the different types of reuse, with
appropriate specific standards and recommended treatment systems wherever applicable.

Integrated Wastewater Management on a County Basis

Tzimas A., Gavalaki E. and Andreadakis A., Pages:15-22

DOI:

https://doi.org/10.30955/gnj.000293

Paper Topic:

General

Issue:

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Abstract

The paper discusses a methodology for integrated municipal wastewater management. In compliance
to the EU Directive 91/271, there is a legal binding to ensure that all agglomerations with populations
over 2000 are provided with wastewater collecting system and adequate treatment. The conditions for
optimum application of the Directive in Greece, especially in the light of the recent administrative reorganization,
and the management of small rural communities not covered by the Directive are
addressed, with reference to a case study application in the Achaia County. In compliance to the EU
Directive 91/271, it is estimated that collecting systems and treatment should expand to at least 70% of
the total population. However, due to the expanding touristic activity, the limited availability of land,
environmental considerations, and favorable population characteristics (high density, relatively large
communities) and morphological and socioeconomical conditions, it is proposed that coverage can
reach to 85% of the total population. As for the rest of the County population (15%), decentralized on
site wastewater treatment and disposal schemes were proved to be the most technically effective and
economically efficient alternative.

Treatment of Water Contaminated with DI-N-Butyl Phthalate by Foto-Fenton Process

Al-Tawabini B.S., Pages:23-28

DOI:

https://doi.org/10.30955/gnj.000263

Paper Topic:

General

Issue:

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Abstract

This study was conducted to assess the removal efficiency of Di-n-butyl phthalate (DnBP) from aqueous
medium using the photo-Fenton process. The Fenton's reagent that consists of a mixture of hydrogen peroxide
(H2O) and ferrous ions (Fe2+) was used to generate the hydroxyl radical (OH0) that attacks the target
contaminant and degrade it. An ultraviolet (UV) source was used to provide the radiation needed in
the photo-Fenton method (i.e. UV/H2O2/Fe2+). The results demonstrated that photo-Fenton process was
more effective and faster than Fenton's reagent in removing DnBP and that photolysis by UV irradiation
was the dominant mechanism in degrading the compound. The results also showed that enhancing the
removal via UV irradiation was achieved by increasing either the temperature or the H2O2 concentration.

Characterisation of Metal Retention Agents and Study of their Application in Liquid Wastes

Xirokostas N., Korkolis A., Diamantopoulou L., Zarkathoula Th. And Moutsatsou A., Pages:29-37

DOI:

https://doi.org/10.30955/gnj.000267

Paper Topic:

General

Issue:

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Abstract

A procedure that should be implemented for the evaluation of materials suitability, in terms of their
use as metal retention agents, is presented. It derives from a review of materials and waste treatment
mechanisms, which has been studied and is also presented. Lignite fly ash, agricultural ashes, lime and
sawdust were chosen for the experimental study of their metal uptake capacity, according to the proposed
stages, during the treatment of an acidic liquid waste loaded with metals (Cu, Zn, Fe, Ni, Cd,
Cr). Fly ash, agricultural ashes and lime exhibited increased metal retention percentages through
adsorption and precipitation, as it was expected due to their structure, while sawdust acted as sorbent.

Corn Irrigation with Reclaimed Municipal Wastewater

Panoras A., Evgenidis G., Bladenopoulou S., Melidis B., Doitsinis A., Samaras I., Zdragkas A. and Matsis Th., Pages:39-45

DOI:

https://doi.org/10.30955/gnj.000286

Paper Topic:

General

Issue:

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Abstract

The effects of effluent from Thessaloniki, the second most populated Greek city, reclaimed either by
activated sludge or by stabilization ponds, were studied on field-grown corn. The experimental layout
was that of a split- plot design with six replications, three water qualities and two irrigation methods.
Potable water was used as the control. No significant differences in corn yield have been observed
among the three water-quality treatments. However, significant differences have been observed in corn
yield between the irrigation methods. Furrow irrigation has produced about 10% more corn yield than
trickle irrigation. There is a potential risk of facing problems related to soil salinity and alkalinity if no
consideration for soil reclamation is taken into account. The trace element concentration in the soil and
plant was low. The chlorinated effluent was free of pathogens, while the presence of pathogens was
detected in the non-chlorinated effluent reclaimed by the stabilization ponds.

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Global NEST Journal

Issue 1

Articles

Wastewater Reuse Criteria In Greece

Integrated Wastewater Management on a County Basis

Treatment of Water Contaminated with DI-N-Butyl Phthalate by Foto-Fenton Process

Characterisation of Metal Retention Agents and Study of their Application in Liquid Wastes

Corn Irrigation with Reclaimed Municipal Wastewater

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