Development of constructed treatment wetlands in Czech Republic for five years term

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F16%3APU119599" target="_blank" >RIV/00216305:26110/16:PU119599 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5593/SGEM2016/B52/S20.029" target="_blank" >http://dx.doi.org/10.5593/SGEM2016/B52/S20.029</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/SGEM2016/B52/S20.029" target="_blank" >10.5593/SGEM2016/B52/S20.029</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Development of constructed treatment wetlands in Czech Republic for five years term

Popis výsledku v původním jazyce

Constructed wetlands (CWs) are in Czech Republic considered an alternative treatment technologies to activation treatment process. CWs are based on natural and slow wastewater treatment (without electricity). Horizontally flow CWs are confronted in many cases with problems almost the whole Czech Republic. As well as, they are often accompanied by inadequate cleaning efficiency (low ammonia removal). At present, about 400 CWs are in operation in Czech Republic. Majority of them are designed with horizontal sub-surface flow, while vertical flow constructed wetland are still are operated in the semi-experimental stage. However the vertical flow CWs have shown very good treatment effect and they can become the better solution into practice. Research work in the last five year solved the most common problems in constructed treatment wetlands. Our results are new approaches and solutions of configuration. The treatment efficiency is comparable with other technological devices for wastewater treatment. The outlet concentration obtained in the constructed wetland for 230 PE in the Czech Republic achieves COD <20 mg l-1, BOD < 7 mg l-1, TSS < 6 mg l-1 N-NH4+ < 7 mg l-1 (ammonia nitrogen is slowly improved). These results are significantly lower than the legislative limits for < 500 PE: COD < 150 mg l-1, BOD < 40 mg l-1, SS < 50 mg l-1 (ammonium nitrogen is not required). New results from research in the field of septic tanks also show significantly higher efficiency in comparison with slotted sedimentation tanks: COD = 78%, BOD = 75%, SS = 94%. In the Czech Republic is newly used numerical simulation in the research works connected with constructed wetland. The numerical simulation is provided by using software HYDRUS CW2D. We use numerical models of the CWs that were calibrated and allow to get information about the output concentrations of wastewater emission, such as ammonia nitrogen (N-NH4+), chemical oxygen demand (COD) and phosphorus (Ptot). The differences between me

Název v anglickém jazyce

Development of constructed treatment wetlands in Czech Republic for five years term

Popis výsledku anglicky

Constructed wetlands (CWs) are in Czech Republic considered an alternative treatment technologies to activation treatment process. CWs are based on natural and slow wastewater treatment (without electricity). Horizontally flow CWs are confronted in many cases with problems almost the whole Czech Republic. As well as, they are often accompanied by inadequate cleaning efficiency (low ammonia removal). At present, about 400 CWs are in operation in Czech Republic. Majority of them are designed with horizontal sub-surface flow, while vertical flow constructed wetland are still are operated in the semi-experimental stage. However the vertical flow CWs have shown very good treatment effect and they can become the better solution into practice. Research work in the last five year solved the most common problems in constructed treatment wetlands. Our results are new approaches and solutions of configuration. The treatment efficiency is comparable with other technological devices for wastewater treatment. The outlet concentration obtained in the constructed wetland for 230 PE in the Czech Republic achieves COD <20 mg l-1, BOD < 7 mg l-1, TSS < 6 mg l-1 N-NH4+ < 7 mg l-1 (ammonia nitrogen is slowly improved). These results are significantly lower than the legislative limits for < 500 PE: COD < 150 mg l-1, BOD < 40 mg l-1, SS < 50 mg l-1 (ammonium nitrogen is not required). New results from research in the field of septic tanks also show significantly higher efficiency in comparison with slotted sedimentation tanks: COD = 78%, BOD = 75%, SS = 94%. In the Czech Republic is newly used numerical simulation in the research works connected with constructed wetland. The numerical simulation is provided by using software HYDRUS CW2D. We use numerical models of the CWs that were calibrated and allow to get information about the output concentrations of wastewater emission, such as ammonia nitrogen (N-NH4+), chemical oxygen demand (COD) and phosphorus (Ptot). The differences between me

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10501 - Hydrology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

SGEM Conference Proceedingsc

ISBN

978-619-7105-66-7

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

8

Strana od-do

225-232

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

51 Alexander Malinov Blvd., 1712, Sofia, Bulgari

Místo konání akce

Albena

Datum konání akce

30. 6. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000391519600029