Work object – Vyžuona river, which has 26 km lenght, is left affluent of Šventoji river, belongs to subbasin of Šventoji river and runs from northeast to southwest of Lithuania. Work aim – identify water quality and bounded with it live organisms of Vyžuona river. Work tasks – analyse physical-chemical water parameters of Vyžuona river, identify varietal composition of organisms, define and evaluate contamination of river objects. Work results – After the reasearch was made there was defined that Vyžuona river in Utena town (1 km from Krašuona river and Vieša river junction) belongs to average contaminated rivers category measuring by parameters of water quality: common nitrogen quantity 1.9 times exceeds permissible quotas, 68.6 % of common nitrogen is composed of nitrate nitrogen, BDS7 quantity 2,7 times exceeds the LDK, concentration of phosphates 2.3 times exceeded permissible quotas. Krašuona river and Vieša river runs trough private houses section, which has no central sewer and that is the reason why mentioned rivers are bearing domestic contaminants into Vyžuona river. According to 2004-2006 data below the outlet from drain mechanism of UAB „Utenos vandenys“ refinement system there was found concentration of phosphorus which averagely 1,75 times, common nitrogen 1,1 times and BDS7 1,7 times less in comparison with river part in centre of Utena town above UAB „Utenos vandenys“. That may be explained by UAB „Utenos vandeys“ affect, which drains large amount of enough... [to full text]

Lietuvai tapus ES nare didelis dėmesys bei lėšos nuolatos yra skiriamos aplinkosaugai. Susidarančių problemų analizė skirstant lėšas projektams, jų statybai ir eksplotacijai, turi padėti išvengti jų ateityje. Jau prieš įstojant 2004 m. Lietuvai į Europos Sąjungą, buvo galimybė naudotis jos finasine parama, kuria Lietuva ir naudojosi. ES fondų lėšų administravimui bei veiksmingam šiomis lėšomis finansuojamų projektų įgyvendinimui užtikrinti Lietuvoje 2002 metais buvo įsteigta ISPA programos įgyvendinimo agentūra prie Aplinkos ministerijos. Šiuo metu ES lėšų iš ISPA/Sanglaudos fondų panaudojimą, projektų rengimus, pirkimus, administruoja Aplikos projektų valdymo agentūra (APVA). Vandentvarkos projektus per „kaimo infrastruktūros tobulinimo“ kryptį prižiūri Nacionalinė mokėjimo agentūra (NMA). Darbo tikslas- apžvelgti ES fondų lėšų panaudojimą nuotekų valyklų projektams ir jų įgyvendinimui, išanalizuoti nuotekų valyklose taikomas technologijas ir iškylančias statybos ir eksplotacijos problemas. Uždaviniai: Išanalizuoti senųjų nuotekų valyklų pritaikymą šiuolaikinėms technologijoms, išnagrinėti ES fondų lėšų panaudojimą nuotekų valyklų statyboms, atlikti naujose projektuose taikomų technologijų analizę. / In May 2004 Lithuania became the member of the European Union; therefore now it has more opportunities for using the financial assistance provided by the European Union. New members are concerned with the utilisation of support funds of the European Union. The Ministry of Environment in 2002 established ISPA Implementing Agency that controls utilisation of EU assets from ISPA/Cohesion funds, organizes project preparation, procurements, consultations etc. In 2004 the Agency was renamed to Environmental Projects Management Agency. The National Paying Agency was established for administration of SAPARD support. Main investment targets in the field of water resource protection are: improvement of fresh water quality, reduction of surface water contamination with domestic waste, reduction of underground water pollution. Goal of work is to review the usage of EU funds for wastewater treatment projects and their implementation. This work describes the technological and regulatory changes that have occurred over the last ten years in this discipline, including: improved techniques for the characterization of wastewaters, fundamental understanding of many of the existing unit operations and processes used for wastewater treatment, especially those processes used for the biological removal of nutrients, greater implementation of several newer treatment technologies.

The master student’s work analyzes water quality of the river Tatula above and below the tributary Juodupė saturated with municipal wastewater of Biržai town. Study object. The river Tatula is a 66.2-km long right tributary of the Mūša. The river Tatula belongs to the river Lielupė basin located in northern part of Lithuania. The Tatula is flowing via cultivated karst region. Objective of work: to determine the changes in water quality of the river Tatula within the period of 1994-2004, when old wastewater treatment facilities were functioning in Biržai town and the new facilities started working in 2003. Study methodology. The study is based on the data of water quality measurements conducted by the United Research Center of the Ministry of Environment as well as additional data collected by the author in 2003-2004 in the river Tatula above the Juodupė inflow (distance from the outlet 18.8 km; basin area 191.4 km2) and below the tributary (distance from the outlet 17.5 km, basin area 283 km2). To estimate the changes in water quality during the study period, 26 parameters indicating water quality were analyzed; the changes in concentrations of nitrogen and phosphorus were considered as topical issues. Water quality was estimated on the basis of river water classification. Water samples were analyzed in the laboratory of wastewater treatment facilities of Biržai town. Study results. As the study results have shown, according to all water quality parameters the stretch of... [to full text]