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Example use of electrocoagulation in outflow from wastewater treatment plant
Plotěný, Miroslav; Maršálková, Eliška; Maršálek, Blahoslav; Holba, Marek
2010 - Czech
Based on the results of this study was showed that the electrocoagulation process has some advantages in comparison with other methods of phosphorus removal. Such as simple equipment, simple handling, short time delay, reduced chemical dosing or relatively rapid sedimentation flakes. The study demonstrated that the real potential of this technology is applicable mainly in small villages, where are not installed or operating other technologies for phosphorus removal. Na základě výsledků této studie vyplynulo, že proces elektrokoagulace v porovnání s ostatními metodami odstraňování fosforu má některé výhody, jako je jednoduchost zařízení, jednoduchá manipulace, krátká doba zdržení, omezení dávkování chemikálií, poměrně rychlá sedimentace vloček. Studie prokázala reálný potenciál této technologie, která je použitelná především u malých obcí, kde nejsou instalované ani provozované jiné technologie odstranění fosforu.
Keywords:
electrocoagulation; phosphorus
Available at various institutes of the ASCR
Example use of electrocoagulation in outflow from wastewater treatment plant
Based on the results of this study was showed that the electrocoagulation process has some advantages in comparison with other methods of phosphorus removal. Such as simple equipment, simple handling, ...
New cyanobacterial metabolites with tumor promoting potencies and interaction with other toxic compounds
Bártová, Kateřina; Kohoutek, J.; Adamovský, Ondřej; Bláhová, Lucie; Hilscherová, Klára; Babica, Pavel; Bláha, Luděk
2010 - Czech
In this study were investigated interaction of binary mixtures of cyanobacterial extracts and anthropogenic compounds (polyaromatic hydrocarbons, polychlorinated biphenyls). V této studii jsme se zabývali interakcemi směsi látek- sinicové extrakty a antropogenní polutanty (polyaromatické uhlovodíky a polychlorované bifenyly).
Keywords:
cyanobacteria; metabolites; tumor promotion
Available at various institutes of the ASCR
New cyanobacterial metabolites with tumor promoting potencies and interaction with other toxic compounds
In this study were investigated interaction of binary mixtures of cyanobacterial extracts and anthropogenic compounds (polyaromatic hydrocarbons, polychlorinated biphenyls).
Manipulation with flow rates in water bodies - the possibilities for inhibition of cyanobacterial blooms development
Maršálek, Blahoslav; Šejnohová, Lenka; Vinklárková, Darina; Plotěný, Miroslav; Jančula, Daniel
2010 - Czech
If we compare the sediment capping by active barriers to protect the phosphorus release from sediments with other technologies of manipulation with methods of water discharge, it is clear, that by well-considered manipulations with water discharge, it is possible to reach the same (comparable) results with lower costs and with lower ecotoxicological and limnological risks. By the manipulation of water level, it is possible to reduce cyanobacterial bloom development as supplemental or supporting measure, but the effects may differ in different water bodies and thus it must be consulted always with specialists. Srovnáváme-li technologie překrývání sedimetů a tvorby aktivních barier proti uvolnění fosforu ze sedimentu s technologiemi manipulace s průtoky, je patrné, že dobře promyšlenými manipulacemi s průtoky nádrže lze podstatně levněji a ekotoxikologicky i limnologicky bezproblémověji dosáhnout při nejmenším stejných cílů. Manipulaci s vodní hladinou lze tedy využít k omezení masového rozvoje sinic jako doplňující, nebo podpůrné opatření, má ale, jak je v textu popsáno, různé efekty v různou dobu a proto musí být konkrétní opatření konzultováno vždy s odborníky.
Keywords:
blue-green algae; water level; sediment
Available at various institutes of the ASCR
Manipulation with flow rates in water bodies - the possibilities for inhibition of cyanobacterial blooms development
If we compare the sediment capping by active barriers to protect the phosphorus release from sediments with other technologies of manipulation with methods of water discharge, it is clear, that by ...
Physical methods of removal of the development of blooms
Vinklárková, Darina; Maršálková, Eliška; Zezulka, Štěpán; Lukeš, Petr; Pochylý, F.; Maršálek, Blahoslav
2010 - Czech
Physical methods of removal of the development of blooms may be one of the alternatives to chemical methods. Legislative pressure in CR, supported implementation of EU law to reduce inputs of chemical substances into the environment grows. The lake management is a proposed complex of measures to reduce eutrophication and the development of blooms and physical methods are becoming an integral part. Using physical methods can be expected even in industries where it is treated with raw water. Fyzikální metody omezování rozvoje vodního květu mohou být jednou z alternativ k metodách chemickým. Legislativní tlak ČR, podpořen implementací zákonů EU, na redukci vnosu chemický látek do prostředí roste. U managementu nádrží je navrhován komplex opatření vedoucích k snížení eutrofizace a rozvoje vodního květu a fyzikální metody se stávají jejich nedílnou součástí. S použitím fyzikálních metod je možno počítat i v průmyslových odvětvích, kde je nakládáno s vodou.
Keywords:
physical tools; cyanobacterial water blooms; lake management
Available at various institutes of the ASCR
Physical methods of removal of the development of blooms
Physical methods of removal of the development of blooms may be one of the alternatives to chemical methods. Legislative pressure in CR, supported implementation of EU law to reduce inputs of chemical ...
Elimination toxins of cyanobacteria
Jančula, Daniel; Blahová, L.; Maršálek, Blahoslav
2010 - Czech
Phthalocyanine molecules which are able to degrade microcystins - toxins, have been discovered. Byly nalezeny a hodnoceny molekuly ftalocyaninů, pomocí kterých lze degradovat toxiny sinic - microcystiny
Keywords:
toxin; removal; cyanobacteria
Available at various institutes of the ASCR
Elimination toxins of cyanobacteria
Phthalocyanine molecules which are able to degrade microcystins - toxins, have been discovered.
The effect of phosphorus deficiency on growth and primary processes of photosynthesis in algae and cyanobacteria
Zezulka, Štěpán; Maršálek, Blahoslav
2010 - Czech
The management of cyanobacterial blooms is connected with the necessity to limit the input of nutrients into surface water reservoirs, especially phosphorus. Higher content of phosphorus or change in N/P ratio towards phosphorus give advance for cyanobacteria. Laboratory cultures of cyanobacteria Synechococcus and green alga Chlorella were cultivated in standard medium (0.18 mM P) and then transferred into medium without phosphorus or with 0.045 mM, 0.09 mM, 0.18 mM and 0.36 mM P. Growth rate (optical density) and parameters of induced chlorophyll fluorescence were measured repeatedly during 7 days of cultivation. Significant inhibitive effect on growth and fluorescence parameters was found in cyanobacteria cultivated in medium without P. On the other hand, green alga did not exhibit any significant sensitivity to the P concentration in the medium. Omezování rozvoje vodních květů sinic je spojováno s nutností omezit přísun živin do vodních nádrží, a to zejména fosfor. Je známo, že vyšší obsah fosforu nebo změna poměru N/P ve prospěch fosforu zvýhodňují sinice v růstu. Na laboratorních kulturách sinice Synechococcus sp. a zelené řasy Chlorella sp. byl studován vliv deficience fosforu. Kultury předpěstované ve standardním médiu (0.18 mM P) byly převedeny do média zcela bez fosforu nebo obohaceného 0.045 mM, 0.09 mM, 0.18 mM a 0.36 mM fosforu. Rychlost růstu (hustota suspenze) a parametry indukované fluorescence chlorofylu byly měřeny po 1, 2, 3, 4 a 7 dnech expozice. Významný inhibiční účinek na růst i fluorescenční parametry byl zjištěn u sinice, kultivované v médiu bez P. Naopak zelená řasa neprojevila téměř žádnou významnou citlivost na množství P v médiu.
Keywords:
phosphorus; cyanobacteria and algae; photosynthesis
Available at various institutes of the ASCR
The effect of phosphorus deficiency on growth and primary processes of photosynthesis in algae and cyanobacteria
The management of cyanobacterial blooms is connected with the necessity to limit the input of nutrients into surface water reservoirs, especially phosphorus. Higher content of phosphorus or change in ...
Lyngbya- another cyanobacterial genus producing water blooms in tropical ecosystems, causes occurence, ecological impact, the possibility of liquidation
Komárek, Jiří; Komárková, Jaroslava
2010 - Czech
The tropical species Lyngbya robusta occured the first time as a dominant water-bloom forming cyanobacterium in tropical lake Atitlan, Guatemala. In the abstract are presented the main reasons of its occurrence, development and ecological consequences. Tropický druh sinic Lyngbya robusta vytvořil silný vodní květ v tropickém jezeře Atitlan, Guatemala. Je to první případ nadprodukce tohoto druhu v jezerních ekosystémech. V článku jsou uvedeny hlavní příčiny jeho výskytu, sezónní změny a ekologický dopad.
Keywords:
Lyngbya; water-blooms; tropical lake
Available at various institutes of the ASCR
Lyngbya- another cyanobacterial genus producing water blooms in tropical ecosystems, causes occurence, ecological impact, the possibility of liquidation
The tropical species Lyngbya robusta occured the first time as a dominant water-bloom forming cyanobacterium in tropical lake Atitlan, Guatemala. In the abstract are presented the main reasons of its ...
When mammoths were migrating through Moravia: Palaeovegetation of Weichselian
Jankovská, Vlasta
2010 - English
Reconstruction of palaeovegetation and landscape character for Last Glacial Period (Weichselian) on the basis of pollenanalytical research (Czech Republic, E Moravia).
Keywords:
Weichselian; palaeovegetation; Moravia
Available at various institutes of the ASCR
When mammoths were migrating through Moravia: Palaeovegetation of Weichselian
Reconstruction of palaeovegetation and landscape character for Last Glacial Period (Weichselian) on the basis of pollenanalytical research (Czech Republic, E Moravia).
Nature - friendly fishpond management
Husák, Štěpán; Květ, Jan
2009 - Czech
Endangered water and march plant species in the fishpond of Czech Republic and their relation to different nature and management fishponds. Ohrožené vodní a bažinné rostliny rybníků v ČR a jejich vztah k podmínkám přírodním a hospodářským.
Available at various institutes of the ASCR
Nature - friendly fishpond management
Endangered water and march plant species in the fishpond of Czech Republic and their relation to different nature and management fishponds.
Ecological and health risks of nutrient contamination
Bláha, Luděk; Babica, Pavel; Bláhová, Lucie; Maršálek, Blahoslav
2009 - Czech
Summary of ecological and health impacts of massive development of cyanobacterial water blooms. Shrnutí informací o ekologických a zdravotních dopadeh masivního rozvoje sinic.
Keywords:
nutrients; cyanobasteria; health risks
Available at various institutes of the ASCR
Ecological and health risks of nutrient contamination
Summary of ecological and health impacts of massive development of cyanobacterial water blooms.
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