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DROBETA TURNU SEVERIN WASTEWATER TREATMENT PLANT EFFICIENCY

Visescu Mircea, Carabet Adrian, Enescu Simona

First published: 2017-06-20https://doi.org/10.5593/sgem2017/31/s12.027View metrics

Abstract

Wastewater treatment plants that currently lack biological step have a low efficiency in wastewater treatment. This causes polluted emissions to be discharged into emissaries. An example of this is Drobeta Turnu Severin wastewater treatment plant. Drobeta Turnu Severin City in Mehedinti county currently has 108 246 inhabitants, of which 80% benefit from centralized drinking water distribution and centralized system for collecting and transporting wastewater to the treatment plant. Drobeta Turnu Severin has a wastewater treatment station operating since 2011 and using outdated treatment technology. Treated wastewater discharged into the environment (river Topolnita) located about 200 m from the Treatment Station, which flows into the Danube, does not meet quality requirements set by NTPA 001/2005, which represents the transposition, into Romanian legislation, the EU Environmental Directive. Wastewater Treatment Plant in Drobeta Turnu Severin currently has only a mechanical treatment stage, which allows the mechanical removal of large solids, sand and fat. Suspended solids in wastewater are deposited at a rate of 60% in primary clarifiers, primary sedimentation follows with 60% separation of suspended solids from the main water line. By separating suspended solids from the wastewater, a 25% reduction biochemical oxygen demand (BOD5) takes place. This paper will examine the effectiveness of Drobeta Turnu Severin treatment plant, considering the fact that it contains no biological stage. In light of an analysis of wastewater quality by using its registered parameters at the exit of the treatment plant, a comparison with the limits permitted by law will be made. Biological stage absence does not allow quality parameters of treated wastewater, discharged into the environment, to be in accordance with NTPA 001/2005 legislation.

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Publication details

Title
DROBETA TURNU SEVERIN WASTEWATER TREATMENT PLANT EFFICIENCY
Authors
Visescu Mircea, Carabet Adrian, Enescu Simona
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Water Resources. Forest, Marine and Ocean Ecosystems
Publisher
STEF92 Technology
Year
2017
Pages
217-222
SWS Citekey
Visescu201712217222
ISSN
1314-2704
ISBN
978-619-7408-04-1
Language
en
Publication type
Conference Paper
Keywords
wastewaterquality parametersefficiency
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