Tyrimo objektas: kombinuoti mechaninio nuotekų valymo įrenginiai esantys Balbieriškio, Kaišiadorių, Pasvalio ir Kuršėnų nuotekų valyklose. Tyrimo tikslas: išanalizuoti kombinuotų mechaninio nuotekų valymo įrenginių taikymo galimybes, atsižvelgiant į nuotekų charakteristikas, atlikti šių įrenginių privalumų ir trūkumų analizę. Tyrimo uždaviniai: 1. Identifikuoti nuotekų valyklose esamus kombinuotus nuotekų valymo įrenginius. 2. Atrinkti nuotekų valyklas su skirtingais kombinuotais nuotekų valymo įrenginiais. 3. Išanalizuoti pasirinktose nuotekų valyklose atitekančių nuotekų charakteristikas. 4. Atlikti atrinktuose objektuose kombinuotų valymo įrenginių privalumų ir trūkumų analizę. Tyrimo metodas: ekspertinis vertinimas (vizualus vertinimas). Tyrimo rezultatai:  Trumpai aprašomi atrinkti objektai, kuriuose sumontuoti skirtingi kombinuoti mechaninio nuotekų valymo įrenginiai. Aprašomos kombainų techninės charakteristikos ir jų veikimas.  Atliekamas kombainų vertinimas pagal vertinimo kriterijus: įrenginių techninis patikimumas, valymo procesų technologinis stabilumas, valymo įrenginių kontrolės ir eksploatavimo ypatumai, valymo įrenginių priežiūros ir einamojo remonto ypatumai.  Gauti kombainų vertinimo rezultatai pagal 4 kriterijus panaudojami daugiakriterinei analizei, kuriai atlikti naudojama kompiuterinė programa DAM.  Atsižvelgiant į ekspertinio vertinimo ir daugiakriterinės analizės metu gautus rezultatus nustatyta, kad geriausias iš vertintų kombainų yra PASSAVANT... [toliau žr. visą tekstą] / Object of the research: combined mechanical wastewater treatment facilities in the wastewater treatment plants of Balbieriškis, Kaišiadoriai, Pasvalys and Kuršėnai. Aim of research: to analyse the possibilities to apply combined mechanical wastewater treatment facilities, to perform the analysis of advantages and disadvantages of those treatment systems regarding the wastewater characteristics. Objectives of the research: 1. To identify combined wastewater treatment facilities located in the wastewater treatment plants. 2. To select the wastewater treatment plants with different combined wastewater treatment facilities. 3. To analyse the characteristics of wastewater coming into the selected wastewater treatment systems. 4. To perform the analysis of advantages and disadvantages of combined treatment facilities in the selected objects. Method of the research: expert evaluation (visual evaluation). Results of the research:  A short description of the selected objects where different combined mechanical wastewater treatment systems are installed. Technical characteristics and operation of combines are described.  An evaluation of combines is performed according to the following criteria: technical reliability of systems, technological stability of treatment processes, peculiarities of treatment plant monitoring and exploitation, peculiarities of maintenance and permanent repair of treatment plant systems.  The received results of combine evaluation are used for... [to full text]

This work is focused on the development control system flow area in a standardized horizontal sand trap in the Czech Republic used the majority of constructed wetlands for the capture of solid mineral particles. The goal is the development and validation functions of the flow regulator, providing more uniform process of establishment of mineral particles, respectively. reduction of sedimentation of organic components. The actual design precedes the mathematical description through the HEC-RAS, the results are applied in the design of a laboratory model. Work processes theoretically the standardized sand traps, focuses on the comparison of the required residence time of wastewater in the sedimentation area of establishment with the sedimentation time of sand grain on the selected diameter of 0.8 mm. In laboratory conditions were carried out build sand trap model itself, as well as developed a regulatory element. After resolving structural measurements were taken and compared the results with the ideal state. For putting the controller into practice, when an application is planned at the constructed wetlands in Dražovice village, it will have to the most accurate setting of the regulator.