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Level scraping systems of settlement tanks
Rusník, Tomáš ; Hort, Filip (referee) ; Brandejs, Jan (advisor)
Main topic of this bachelor thesis is analyse of settlement tanks scraping equipements in sewage plants. Settlement tank at the wastewater treatment plant is part of the so-called bio-lines, which is used for the separation of activated sludge from waste water. Activated sludge settles in the settling zone. Part of the sludge flotates to the surface of the tank, usually in the space between the inflow cylinder and overflow edge, respectively. This sludge, biological or chemical origin, may, at the massive occurrence, outflow to the recipient and causes worse quality of the effluent. The sludge is therefore necessary to remove from surface of the settlement tank. Some of the different systems of sludge collection have been developer during last decades. The equipments and their function are descriped in my work.
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Sludge Utilisation from Pulp and Paper Plant
Zemanová, Kateřina ; Houdková, Lucie (referee) ; Boráň, Jaroslav (advisor)
The contens of diploma thesis is description of paper and pulp production and analysis of contemporary problems with disposal of sludges rising on industrial waste water treatment plant. Accent is focuses on description of waste water treatment technique, characteristics of rising sludge and the ways of his liquidation in particular plant for pulp production. Fundamental part of this project is evaluation of power and economics balance of current sludge technology in company Biocel Paskov a.s. and suggested sludge management technology. Balances are based on data gained from measurement in laboratory and on data gained from literary research.
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Raking equipment of sedimentation tank
Šebela, Michal ; Mazal, Pavel (referee) ; Brandejs, Jan (advisor)
Bachelor's thesis contains summary of systems for raking equipment of sedimentation tank. It deals with a specific design solution raking device installed in sewage treatment plant in Ostrava. The goal of this thesis is design suitable solution of raking device. Thesis also contains drawing documentation.
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Using flotation in water treatment plants
Litschmann, Patrik ; Kučera, Tomáš (referee) ; Biela, Renata (advisor)
The bachelor thesis processes the principle of dissolved air flotation (DAF), its history, modifications and parameters. It also describes efficiency in removing cyanobacteria, algae and turbidity on surface sources. Additionally, the experience with flotation is described at the first separation stage in the Czech Republic and abroad. It has turned out that pre-project preparation, model tests and pilot tests are absolutely crucial for dissolved air flotation. Finally, flotation with sedimentation is compared in terms of flocculation, coagulation, sludge and their economic impacts.
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Assessment of drugs in settlings with waste water treatment
Hájek, Radek ; Mravcová, Ludmila (referee) ; Vávrová, Milada (advisor)
This bachelor thesis is focused on asessment of pharmaceuticals in wastewater treatment plant sludge. Two macrolide antibiotics (erythromycin and clarithromycin) and three non-steroidal anti-inflammatory drugs (ibuprofen, naproxen and diclofenac) were assessed. Sample of sludge was taken in municipal wastewater treatment plant in Brno-Modřice. Analytes were obtained using pressurized solvent extraction (PSE) or ultrasonic solvent extraction (USE). Clean-up was performed by solid phase extraction (SPE). Ultra high performance liquid chromatography followed by UV-VIS diode array detection was used for quantitative determination of the analytes.
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Mathematical model of solar drying of sewage sludge
Ficza, Ildikó ; Houdková, Lucie (referee) ; Hájek, Jiří (advisor)
Solární sušení je mimo jiné energeticky nenáročná a tudíž vysoce ekologická cesta pro zpracování kalů z malých čistíren odpadních vod. Výsledkem tohoto procesu je produkt, který je velmi dobře použitelný v zemědělství jako přírodní hnojivo. V rámci této práce bude sestaven zjednodušený dynamický model sušení vrstvy kalu s jednou prostorovou souřadnicí. Tento model bude diskretizován pomocí vhodné numerické metody a bude provedena jeho implementace do výpočtového programu v prostředí MATLAB.
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Screw conveyor
Kaňa, Vojtěch ; Pokorný, Přemysl (referee) ; Jonák, Martin (advisor)
This bachelor thesis deals with proposal tilted screw conveyor in term of calculation and construction solution of tilted screw conveyor for sludge transportation in waste water treatment plant. There is a calculation of the basic parameters, proposal of gearing, proposal of bearings and strength calculation of the main parts. In the attachment we can see drawing documentation.
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Dependence of Sludge Dewatering efficiency on amount of flocculant
Volejník, Tomáš ; Medek, Jaroslav (referee) ; Boráň, Jaroslav (advisor)
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.
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Energetical utilization of waste, especially sewage sludge
Havlásek, Martin ; Kuba, Pavel (referee) ; Frýba, Lukáš (advisor)
This bachelor´s work discusses about energetical utilization of sewage sludge. The process is described from sludge treatment to flue gas cleaning. The main emphasis is on incineration, which are governed by legislation. First are listed sludge treatment and utilization technology which included thermal processing in which is thoroughly described the process of incineration. The following are methods for co-incineration of sludge and devices for direct incineration. Work is finished by chapter about flue gas cleaning.
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Kofermentace biologicky rozložitelných odpadů a čistírenských kalů
Hlavenková, Ema
This thesis deals with using of grass cutting as an entrance substrate for biogas plant used in cofermentation with sludge from waste water treatment and sludge from biogas plant. Tested materials were collected in Brno-Líšeň and Mokrá-Horákov. Grass cutting was tested as a fresh material, dry material and grass silage. Fermentation tests were realized in Republiková referenční laboratoř at Mendelova univerzita in Brno. Temperature during the testing was 42 °C. The production of biogas from fresh grass cutting produced in cofermentation with sludge from waste water treatment was 0,497 m3.kg-1, it contained 0,273 m3.kg-1 of methan. The production of biogas in cofermentation with sludge from biogas plant was 0,474 m3.kg-1 and 0,252 m3.kg-1 of methan. The production of biogas from dry grass cutting in cofermentation with sludge from waste water treatment was 0,416 m3.kg-1 of biogas and 0,230 m3.kg-1 of methan. Cofermentation of dry grass cutting with biogas plant sludge produced 0,399 m3.kg-1 of biogas and 0,208 m3.kg-1 of methan. Last measurement of produced biogas from grass silage in cofermentation with waste water treatment was 0,466 m3.kg-1 of biogas and 0,277 m3.kg-1 of methan. Grass silage and biogas plant sewage produced 0,394 m3.kg-1 of biogas and 0,277 m3.kg-1 of methane.
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