Present state of municipal wastewater treatment in Slovakia

1994 ◽  
Vol 30 (5) ◽  
pp. 49-58
Author(s):  
J. Námer ◽  
L. Hyánek
Keyword(s):  
Water Quality ◽  
Quality Control ◽  
Wastewater Treatment ◽  
Present State ◽  
Municipal Wastewater ◽  
Slovak Republic ◽  
Water Quality Management ◽  
Process Efficiency ◽  
Municipal Wastewater Treatment ◽  
Water Quality Control

This paper reviews the present state of municipal wastewater treatment in the Slovak Republic. A comprehensive approach was applied to the problem; particular elements of water quality control systems were studied and subsequently their interactions were considered. Analysis of available data in this field shows the serious problems concerned with the performance and maintenance of existing sewer systems and wastewater treatment plants as well as with their process efficiency and impact on the water quality of receivers. The significant influence of groundwater infiltration and industrial wastewaters on municipal wastewater quality and their impact on effluent quality are documented. All these facts were evaluated and priorities were set for improving the water quality control and the utilization of integrated urban water quality management, keeping in mind the typical socio-economic problems encountered during the transition of post-communist countries.

A study about the use of chemicals in conventional tertiary treatment. Performances comparison of three municipal wastewater treatment plants and pilot plant experiences

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
A. Iborra-Clar ◽  
J.A. Mendoza-Roca ◽  
A. Bes-Pií ◽  
J.J. Morenilla-Martínez ◽  
I. Bernácer-Bonora ◽  
...  
Keyword(s):  
Water Quality ◽  
Wastewater Treatment ◽  
Pilot Plant ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Secondary Effluent ◽  
Municipal Wastewater Treatment ◽  
Wastewater Reclamation ◽  
Valencian Region ◽  
Municipal Wastewater Treatment Plants

Rainfall diminution in the last years has entailed water scarcity in plenty of European regions, especially in Mediterranean areas. As a consequence, regional water authorities have enhanced wastewater reclamation and reuse. Thus, the implementation of tertiary treatments has become of paramount importance in the municipal wastewater treatment plants (WWTP) of Valencian Region (Spain). Conventional tertiary treatments consist of a physico-chemical treatment of the secondary effluent followed by sand filtration and UV radiation. However, the addition of coagulants and flocculants sometimes does not contribute significantly in the final water quality. In this work, results of 20-months operation of three WWTP in Valencian Region with different tertiary treatments (two without chemicals addition and another with chemicals addition) are discussed. Besides, experiments with a 2 m3/h pilot plant located in the WWTP Quart-Benager in Valencia were performed in order to evaluate with the same secondary effluent the effect of the chemicals addition on the final water quality. Results showed that the addition of chemicals did not improve the final water quality significantly. These results were observed both comparing the three full scale plants and in the pilot plant operation.

scholarly journals Recirculating Aquaculture Technologies

2019 ◽  
pp. 35-76 ◽  
Author(s):  
Carlos A. Espinal ◽  
Daniel Matulić
Keyword(s):  
Water Quality ◽  
Quality Control ◽  
Wastewater Treatment ◽  
Water Quality Control ◽  
New Developments ◽  
The Past ◽  
Control Processes ◽  
Recirculating Aquaculture ◽  
Recirculating Aquaculture Systems ◽  
Aquaculture Production

AbstractRecirculating aquaculture technology, which includes aquaponics, has been under development for the past 40 years from a combination of technologies derived from the wastewater treatment and aquaculture sectors. Until recently, recirculating aquaculture systems (RAS) farms have been relatively small compared with other types of modern aquaculture production. The last two decades have seen a significant increase in the development of this technology, with increased market acceptance and scale. This chapter provides a brief overview of the history, water quality control processes, new developments and ongoing challenges of RAS.

scholarly journals Identifying Pollutants in the Siret River Basin by Applying New Assessment Tools on Monitoring Data: the Correlation of Land Use and Physicochemical Parameter of Water Quality Analysis

2014 ◽  
Vol 8 (2) ◽  
pp. 5-19
Author(s):  
Andreea Mănescu ◽  
Luca Mihail ◽  
Mihalache Raluca
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Wastewater Treatment ◽  
River Water ◽  
Municipal Wastewater ◽  
Pollution Source ◽  
Assessment Tools ◽  
Quality Analysis ◽  
Water Supply Systems ◽  
Municipal Wastewater Treatment

Abstract The Siret River are used as raw water source for different municipal water supply systems, yet the Siret River are used as receiving bodies by some inhabitants and industry. In the study the quality of the Siret River water was determinate using a Water Quality Index (WQI). Results are presented from a field study performed on the Bistrita, Moldova, Suceava, Siret, Şomuzu Mare, Trotuş and Tributary River in the study area Siret Basin Romania. The main objective of this study was to determine is to find correlations land use to indicators physical-chemical of water quality, to investigate pollution source is more responsible for river water quality. This is of interest not only research context, but also for supporting and facilitating the application analysis postullend in the Water Framework Directive (WFD) (2000/60/CE) for the establishment of programmers of measures. For this purpose a slightly impact pollution source municipal wastewater treatment, land uses, urban, forest, agriculture and mining was selected and intensively monitored during six years January 2006 - December 2011, sampling was determined to meet the WFD standards for confidence in twenty two different control section of the Siret Basin. The main measures to reduce emissions to the Siret River were calcium, ammonium, sulfate, residue fixed (RF), sodium, chloride, free detergent and municipal wastewater treatment, concentrated on point emission. The main contributor to diffuse this parameters increased when more percentage of land was dedicated to industry and urban and less to forest and mining.

Water-Quality Control, Monitoring and Wastewater Treatment in Lithuania 1950 to 1999

AMBIO ◽  
2001 ◽  
Vol 30 (4) ◽  
pp. 297-305 ◽  
Author(s):  
Anolda Cetkauskaite ◽  
Dmitry Zarkov ◽  
Liutauras Stoskus
Keyword(s):  
Water Quality ◽  
Quality Control ◽  
Wastewater Treatment ◽  
Water Quality Control

Development of least-cost water quality control policies for the Nitra River basin in Slovakia

1994 ◽  
Vol 30 (5) ◽  
pp. 69-78 ◽  
Author(s):  
L. Somlyódy ◽  
M. Kularathna ◽  
I. Masliev
Keyword(s):  
Water Quality ◽  
Quality Control ◽  
Economic Transition ◽  
Water Quality Management ◽  
Cost Savings ◽  
Control Policy ◽  
Simulation Models ◽  
Industrial Emissions ◽  
Water Quality Control ◽  
Policy Model

The Nitra is one of the most polluted rivers in Slovakia due to numerous municipal and industrial discharges, as well as the low level of wastewater treatment. The ongoing economic transition and lack of financial resources for water quality management calls for the development of short-run least-cost policies on the basis of ambient standards or a combination of ambient and effluent ones. A water quality control policy model was developed which incorporates dissolved oxygen simulation models, alternative municipal treatment plans and dynamic programming. Least-cost policies to achieve various water quality goals were developed and compared to effluent standard based strategies (including that deriving from the application of the “best available technology”). The role of industrial emissions was demonstrated in a sensitivity fashion, while the influence of parameter uncertainty on the developed policies was analyzed in a multiobjective framework. The analyses show that significant cost savings are possible in comparison to uniform, effluent standard policies. They also suggest that a long-term strategy should be realized on the basis of a sequence of properly phased least-cost policies corresponding to ambient standards to be tightened gradually.

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