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Failure rate wastewater treatment plants
Boryśová, Michaela ; Vlčková, Veronika (referee) ; Hluštík, Petr (advisor)
This thesis deals with the sludge management in wastewater treatment plants. It provides a basic overview of methods for modifying risk material in sludge ending. The main goal of this work is to create a fault trees based on faults which occurred in the sludge management facilities. Furthermore, it was created frequency of failures assessment of the objects on wastewater treatment plant in Hodonín. Provided information were obtained during excursions of WWTP Hodonín and Zbýšov.
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Hygienization of dewatered sewage sludge using vermicomposting process under field conditions
Fojtová, Zuzana ; Innemanová, Petra (advisor) ; Grasserová, Alena (referee)
Sewage sludge is a waste material that is a valuable source of organic matter and nutrients and is used as a fertiliser on agricultural land in many countries around the world. However, the application of sewage sludge carries risks associated with the presence of pathogenic micro- organisms and other undesirable substances in this material and in many countries sewage sludge must meet limits for land application. Vermicomposting of these materials can be one effective way of reducing pathogens in sewage sludge. In this thesis, I investigated the effectiveness of sanitizing sewage sludge in the vermicomposting process under field conditions. The experiment was conducted in an earthen vermicomposter with a total working volume of 10.5 m3 near the village of Hrbov, near Lhenice in the South Bohemia region. Hygienization efficiency was measured using a test with an introduced microorganism (E. coli). The test was modified for the vermicomposting process. In the experiment, a mixture of sewage sludge mixed with birch chips in a ratio of 1:1.5 (sludge: chips) was (i) vermicomposted for six months, (ii) composted only, and (iii) composted for one month and then vermicomposted. In addition to the evaluation of the hygienisation efficiency of the different options, the stability and possible phytotoxicity...
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Advantages and disadvantages of vermicomposting toilets
Svačinová, Kateřina ; Innemanová, Petra (advisor) ; Šereš, Michal (referee)
Decentralized human excreta sanitation systems, which include latrines or composting toilets for example, are among the sustainable methods of dealing with this biological waste. One possible way of dealing with human excrement is the vermicomposting method. This work deals with decentralized caused excreta sanitation using a vermicomposting toilet. The aim of the work was to evaluate the applicability of the vermicomposting method for the sanitation of human excrement and to compare this approach with more widespread methods of so-called dry sanitation, such as a composting toilet. The principles of both methods, the necessary conditions for the successful course of the process and the quality of the resulting sanitation products were described. Attention was focused not only on the presence of pathogenic organisms and the effectiveness of individual systems in their removal, but also on other possible pollutants from the group of personal care products or, for example, microplastics. Their potential effect on earthworm viability was also discussed. Other toilet paper can also be an important source of unwanted contamination. Part of the work was cooperation in the realization of an experimental vermicomposting toilet in the Dvůr Perlová voda complex in Kostelec nad Ohří. I found that...
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Hygienizace kalů v čistírnách odpadních vod
Mach, Pavel
The Dissertation thesis compares the methods of hygienisation of wastewater treatment plants sludges with respect to meeting legislative requirements of conditions for using treated sludges on agricultural land. The thesis draws a comparison between the method of stabilisation and hygienisation of the sludge through the autothermal aerobic thermophilic stabilisation (AATS) by pure oxygen and the method of sludge hygienisation by pasteurization. The objective of the thesis is to evaluate the above-mentioned methods of hygienisation of wastewater treatment plant sludges, to compare their efficiency and a level of secondary contamination by indicator microorganisms before their subsequent treatment.
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Failure rate wastewater treatment plants
Boryśová, Michaela ; Vlčková, Veronika (referee) ; Hluštík, Petr (advisor)
This thesis deals with the sludge management in wastewater treatment plants. It provides a basic overview of methods for modifying risk material in sludge ending. The main goal of this work is to create a fault trees based on faults which occurred in the sludge management facilities. Furthermore, it was created frequency of failures assessment of the objects on wastewater treatment plant in Hodonín. Provided information were obtained during excursions of WWTP Hodonín and Zbýšov.
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Možnosti a způsoby využití kalů a sedimentů z ČOV
ENVISAN-GEM a.s., Praha ; AGRO-EKO, Ostrava ; Výzkumný ústav vodohospodářský T.G. Masaryka, Praha ; Petrášková, L ; Vosáhlová, Simona ; Kyclt, Robin ; Holuša, Václav ; Pospíšilová, Eva ; Sýkora, Karel ; Sedláček, Miroslav ; Michalová, Marie
Současný stav v přípravě a diskusi o výhledovém nakládání s kaly a bioodpady v EU. Současný stav nakládání s čistírenskými kaly v ČR. Údaje o produkci a nakládání s kaly, produkce ostatních odpadů z ČOV v ČR. Charakteristika technického stavu kalového hospodářství v ČR. Prognóza vývoje následného využití/odstranění kalu z ČOV. Odhad investičních nákladů na kalové hospodářství s vazbou na nakládání s kalem podle zákona o odpadech. Nové trendy v nakládání s kaly. Dosahovaná kvalita kalů ve vztahu k limitům rizikových látek a platné legislativy.
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Výběr a metody stanovení indikátorových organismů pro hodnocení vlivů na zdraví a životní prostředí při nakládání s biologicky rozložitelnými odpady: Rešerše současného stavu poznání a strategií pro určování indikátorových organismů v oblasti sledování účinnosti hygienizace technologií zpracovávajících BRO s předpokládanou přítomností infekčních biologických činitelů
Státní zdravotní ústav, Centrum hygieny životního prostředí, odborná skupiny hygieny půdy a odpadů, Praha ; Zimová, Magdalena ; Seifertová, Eva ; Štěpánková, Martina ; Matějů, Ladislava
Legislativa - limity pro indikátorové organismy (dokumenty Evropské unie). Legislativa ostatních států – kaly z čistíren odpadních vod (USA, Kanada, Austrálie a Nový Zéland, Spolková republika Německo, Švýcarsko, Francie, Finsko, Norsko, Polsko, Slovenská republika, Velká Británie). Legislativa ostatních států – bioodpady (strategie severských států, německá strategie, strategie ostatních států Evropy). Legislativa ČR - limity pro indikátorové organismy (kaly z čistíren odpadních vod, biologicky rozložitelné odpady, nařízení Rady a EP č. 1774/2002 o nakládání s vedlejšími živočišnými produkty.
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