The subject of this diploma thesis is engineering design of the sediment conveyer. Conveyer is instrumental to total emptying of sediment silo that is situated in a sewage treatment plant. Proposed construction has to fulfill the specified functional requirements and parameters. Parts of solution are also necessary analytical and FEM calculations.

The target of the first part of this diploma thesis is focused on the problems relating to the sludge production from the wastewater treatment plant and subsequent sludge treatment. Wastewater treatment plant and individual processes from the sludge management are described. The process of the sludge dewatering is described more extensively. Various methods of the dewatering and materials balance are described, too. The second part of this thesis is based on the experiment which took place on wastewater treatment plant Tetčice. The influence of the polymeric organic flocculant dosing on the sludge dewatering was monitored by this experiment. Dependence of the sludge dry matter and filtrate suspended solids content on the specific amount of flocculant was evaluated from experiment’s outputs. Using materials balance and outputs of the experiment, economical balance was made. It made possible to choose the most economic and technologically optimal way of the sludge dewatering on wastewater treatment plant Tetčice.

The first part of the thesis is focused on the problems related to sludge and evaluates sludge disposal from waste treatment plants. The thesis mentions factors influencing method selection of sludge disposal as well as it compares sludge disposal in the Czech Republic and in the other states of the EU. It describes a complete waste treatment line and sludge disposal in the area of sludge treatment and disposal. It deals with sludge disintegration and describes the most effective methods of disintegration. The second part of the thesis describes an experimental part of disintegration of waste treatment sludge. An experiment was conducted in the school laboratory in a way of thermal disintegration in the double-surface pressure tank. The disintegration was conducted to temperatures of 60 °C, 90 °C, 120 °C, 150 °C, and 180 °C. We monitored dependence of the sludge dry residue content on disintegration temperature as well as content of suspended solids in liquid fraction (FUGAT). It was possible to choose optimal temperature of disintegration in accordance with processed results.

This work was focused on the determination of musk compounds in various components of the environment. Synthetic musk compounds are organic substances commonly used as fragrant constituents of detergents, perfumes, cosmetics and other personal care products (PCPs). These compounds contaminate the aquatic environment through municipal wastewater from sewage treatment plants. The result is accumulation of these analytes in the environment and their occurrence in food chain. Synthetic fragrances are commonly detected also in human body; these substances generally belong among relatively new persistent organic pollutants (POPs) because of their persistence, bioaccumulation, and potential toxicity. The aim of this work was to optimize the methods for the determination of selected synthetic fragrances in wastewater (municipal, industrial) and in fish muscle. These analytes were determined in wastewater [the wastewater treatment plant (WWTP) Brno – Modřice, cosmetic manufacturing plant] and in fish Squalius cephalus that had been caught in the river Svratka. The selected analytes (14 substances) originate from the group of nitromusk, polycyclic musk and linear musk compounds. Solid phase microextraction (SPME) [for wastewater samples] and pressurized solvent extraction (PSE) [for fish samples] were used for isolation of analytes from real samples. The identification and quantification of analytes were carried out by high resolution gas chromatography coupled with mass spectrometry detection (GC-MS). The results show that galaxolide (g.L-1) and tonalide (tenths of g.L-1) were polycyclic musk compounds which were found at the highest concentration level in influent and also in effluent samples from the WWTP Brno – Modřice. The most extended nitromusk compound was musk ketone (hundredths of g.L-1). Linear musk compounds were detected in all influent samples (g.L-1). The overall removal efficiency of synthetic musk compounds from wastewater in the WWTP varies within the following ranges: nitromusk compounds 34.4 % – 85.4 %, polycyclic musk compounds 36.7 % – 53.3 % and linear musk compounds 90.5 % – 99.9 %. On the basis of the results it can be stated that wastewater (effluent from the WWTP) is the primary source of musk compounds, especially of the polycyclic ones in the environment. It has been also shown that ultrafiltration used in a cosmetic plant is a highly efficient technology for removing nitromusk and polycyclic musk compounds from industry wastewater. The results from evaluation of the fish contamination by musk compounds show that galaxolide was the substance which reached the highest concentration levels (tens of g.kg-1 l.w.). The results corroborate ubiquitous occurrence of musk compounds in the environment and reduction of using of nitromusk compounds due to their potential toxic properties. It has been shown that the insufficiency of the purifying procedures used in the WWTP Brno – Modřice has a significant influence on the concentration level of polycyclic musk compounds (tonalide, galaxolide) in fish caught from the river Svratka.

This thesis deals with the design and assessment of all supporting parts of a cast-in-place reinforced concrete tank of sewage plant in the village Vrbice. Tha main parts of the thesis are the technical report, static analysis, drawing documentations, construction process and visualisations. Calculation of internal forces was performed by the software Scia Engineer and verified by manual calculation. The drawing documentation constists of shape and reinforcement drawings of supporting parts.

The subject of this thesis is to create evaluation criteria of technical condition of water treatment plants. The thesis is divided into four parts. In the first part of this thesis are presented evaluation systems by performance indicators drinking water treatment plants, which are then applied in real time. There are detailed descriptions of individual performance indicators. Each evaluation conducted certain period of time. After the expiry of the period under review was to evaluate and create charts to display results. In the next chapter the thesis focuses on the identification data. First, it was necessary to find out all necessary information about the water treatment plant. Necessary information means information relating to building construction, human resources, mechanical parts, technological equipment and other entities with links to the operation of the water treatment plant. All these data were sorted for better overview and facilitate setting evaluation indicators. The third part of this thesis is focused on the development of indicators that are used to determine the current status of the water treatment plant. As a first step was established 19 indicators used to evaluate the condition of the entire water treatment plant. Followed by a description of the individual indicators and then determine the individual evaluation criteria. In the last part of this thesis was carried out by the proposed criteria on selected water treatment plants. They were selected three water treatment plants located in the Czech Republic, which held a personal tour of each water treatment plant. This was followed by an overall assessment of the technical condition of water treatment plants.

The aim of this diploma thesis is to elaborate alternative designs of the Dětkovice sewer network. The first part deals with reasons of this work and the area of interest. In the next part the thesis deals with describe of current condition and proposed alternative designs. Furthermore, the economic assessment of alternative designs is elaborate.

This study evaluated the effects of chlorinated effluent discharged from the City of Denton, Texas' wastewater treatment plant on Pecan Creek's fish and macroinvertebrate assemblages, and their recovery upon dechlorination. A baseline of ecological conditions was established while chlorine was present in the effluent (June 1993- October 1993), and was evaluated again after dechlorination with sulfur dioxide (October 1993-August 1994). In situ Asiatic clam and fathead minnow ambient toxicity tests, and fish and macroinvertebrate collections were used to establish this baseline for comparison to post-dechlorination results.

The climate adaptation of our cities and the optimization of our technical systems with regards to weather sets high demands on the availability and the processing of weather data. The possibility to forecast disturbances of influent flow rate to wastewater treatment plants allow control systems counteract these disturbances before they have a harmful effect on the treatment processes. These forecasts can be made by different models A neural network models complex patterns between different data sets through a multi-layered structure containing a large amount of transformation functions. The aim of this project was to examine how the complex neural network performed compared with a simpler linear regression model when forecasting wastewater flow using high resolution X-band rain radar data. The study also investigated to what extent X-band rain radar data contributes to the performance of the model. The performance was evaluated at rain flow periods only. Wastewater flow data were provided by Avedøre wastewater treatment plant in Copenhagen operated by BIOFOS. The X-band rain radar data was provided by HOFOR. The neural network was developed by Informetics on the TensorFlow platform. This project concluded that the neural network and the linear regression model performed equally well at predicting when a rain flow period began. The neural network was more accurate at predicting the flow rate while the linear regression was better at approximating the accumulated flow over an entire rain flow period. Using additional rain data up to 30 km within the radar station location in comparison with using data only from within the catchment indicated a 20 to 30-minutes improvement of possible lead time. A conceivable lead time when forecasting the sewer flow to Avedøre wastewater treatment plant was estimated to be around 4 hours. / Det föreligger höga krav på tillgänglighet och bearbetning av väderdata för att kunna optimera tekniska system i förhållande till väder och klimat. Att kunna förutsäga ändrat inkommande flöde till avloppsreningsverk möjliggör för kontrollsystem att kunna motverka negativa konsekvenser på reningsprocesserna på grund av det ändrade flödet. X-band radardata kan användas för att prognoser av flöden med hjälp av olika modeller.Ett neuralt nätverk, reproducerar komplexa mönster mellan olika dataset genom en struktur med flera lager och en mängd överföringsfunktioner.  Målsättningen med det här projektet var att utvärdera hur ett komplext neuralt nätverk presterar jämfört med en enklare regressionsmodell i att förutsäga avloppsflöde med hjälp av högupplöst X-band radardata. I projektet undersöktes också hur tillgång av olika radardata kunde bidra till modellens prestanda. Modellerna utvärderades endast under regnflödesperioder. Data över avloppsflödet som användes i projektet kom från Avedøre avloppsreningsverk i Köpenhamn. Reningsverket drivs av BIOFOS. Radardata kom från HOFOR. Det neurala nätverket som användes har utvecklats av Informetics på plattformen Tensorflow. Slutsatser som kunde dras i projektet var att det neurala nätverket och den linjär regressionsmodellen var lika bra på att förutsäga när en regnflödesperiod startade. Det neurala nätverket kunde förutsäga det momentana flödet bättre än regressionsmodellen, medan det omvända gällde för att uppskatta den totala flödesvolymen under en hel regnflödesperiod. Genom att använda ytterligare regndata, upp till 30 kilometer från radarstationen, jämfört med att endast använda data från avrinningsområdet kunde en 20–30 minuters förbättring av den möjliga prognostiden påvisas. En tänkbar prognostiden för att förutsäga avloppsflödet till Avedøre avloppsreningsverk visades ligga omkring 4 timmar.

En Lima metropolitana falta agua potable en determinados lugares y el suministro no es uniforme. Asimismo, las proyecciones que se presentan para el futuro marcan un déficit por mucha demanda poblacional y cambio climático. Ante esta situación, es fundamental buscar medidas que aporten al ahorro del agua potable, y la industria del concreto premezclado en la ciudad ha presentado un crecimiento vertiginoso en los últimos años a excepción del 2020 por el Covid-19 con gran demanda de agua potable. Ante la problemática planteada, es factible usar aguas residuales provenientes de plantas de tratamientos para elaborar concreto premezclado. Se usó 4 tipos de aguas. Tres proveniente de las Plantas de Tratamiento de Agua Residuales (PTARs) de Santa Clara, Carapongo y San Antonio de Carapongo con sistema de tratamiento lodos activados, aireación y filtros de arena para la primera. Anaerobio-Aerobio para la segunda y lodos activados y aireación extendida para la tercera y agua potable del Laboratorio de Ensayo de Materiales (LEM-UNI) para elaborar concreto f'c=210 Kg/cm2 La investigación consta de 7 capítulos: En capítulo 1, se presenta el marco teórico que nos presenta las bases fundamentales empleadas. En el capítulo 2, se tiene los materiales y método utilizados donde de elaboraron 116 muestras en total para ensayos de compresión axial, tracción por compresión diametral, flexión en vigas y permeabilidad al agua. En el capítulo 3, los resultados de los objetivos específicos planteados y su interpretación. En el capítulo 4, las conclusiones finales. En el capítulo 5, las recomendaciones y en capítulo 6 se presenta las referencias consultadas. Finalmente, el capítulo 7 todos los anexos de la investigación. Se llegó a la conclusión que es muy factible elaborar concreto con aguas residuales tratadas procedentes de las 3 PTARs, ya que presentaron un comportamiento óptimo al ser evaluados en sus propiedades físicas, mecánicas y de durabilidad. / In Metropolitan Lima, there is no water in certain places and the supply is not uniform. Also the projections that are presented to the future show a deficit due as a resulto of high population demand and climate change, is essential to look up some ways that contribute to the saving of drinking wáter and the premix concrete industry, in the city has presented dizzy groth in the last years except for 2020 due to the COVID 19 with high demand for drinking wáter. Face with the problem raised, it is very feasible to use wasteater from treatment plants to make premix concrete. It was used four types of water. Three from Santa Clara, Carapongo and San Antonio de Carapongo wastewater treatment plants (PTARs) with a treatment system activated sludge, aeration and sand filters for the first. Anaerobic – Aerobic for the second and activated sludge and extended aeration for the third and drinking wáter from the material testing (LEM-UNI) to make concrete f'c=210 Kg/cm2 This research has 7 chapters: In the 1rst chapter presents us, the theorical framework is about the fundamental bases used. In the 2nd consists about materials and methods used where 116 samples in total were prepared for trials of axial compression, diametral compression traction, vending in beams and wáter permeability. In the 3rd chapter, the results of the specific objectives set and their interpretation. In the 4th last conclusions, in the 5th the recommendations and in the 6th the consulte references are presented. Finally, In the last chapter all the research annexes. It was concluded that is very feasible to makeconcrete with treated wastewater from 3 PTARs, since they presente an optimal behavior when evaluated in their physical, mechanical and durability properties. / Tesis