The effects of Typha latifolia and componentsof filter media on ammonia nitrogen removal in constructed wetland treatmentsystems | Vestnik Tomskogo gosudarstvennogo universiteta. Biologiya - Tomsk State University Journal of Biology. 2011. № 2 (14) .

The effects of Typha latifolia and componentsof filter media on ammonia nitrogen removal in constructed wetland treatmentsystems

Ecological engineering offers today one of the most perspective technologies forwastewater treatment, called «constructed wetlands» treatment systems. «Constructedwetlands» are artificial wetlands using as wastewater treatment plants which rely uponnatural microbial, biological, physical and chemical processes to treat wastewater withminimal economical and ecological costs. In recent years numerous researches havecovered various aspects of using «constructed wetlands» such as the role of wetlandvegetation and its species in systems, using different types of substrate, vegetation management. All this aspects can influence on increasing of system's efficiency in wastewatertreatment.This research revealed the effects of macrophyte species (broadleaved cattail - Typhalatifolia) and limestone in filter media on ammonia nitrogen removal in lab-scalefree water surface (FWS) «constructed wetlands». The two lines of experimental wetlandsconsisted of six wetland cells constructed with clear polypropylene containers(52*34 cm and height 28 cm) in volume of 50 litres.It is found out that vegetation in FWS wetlands raises velocity, efficiency of NH4+removal and reduces washing away of microorganisms with effluents likely due of creatingof additional surface for bacteria's attachment. It is a very important aspect of «constructedwetlands» designing and building in view of a short hydraulic retention time andhigh speed of processing water in this kind of «constructed wetland» systems. Limestoneused in filter media in this experiment has not influenced to acidity level of water becausechosen in this research horizontal surface flow constructed wetlands did not providecontact water with deep layers of filter media.

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Keywords

очистка сточных вод, «constructed wetlands», анаммокс, Typha latifolia, высшая водная растительность, wastewater treatment, constructed wetlands, anammox, Typha latifolia, macrophyte species

Authors

Name	Organization	E-mail
Sivkova Elena E.	Tomsk State University	sivelena@sibmail.com
Pribytkova Ekaterina V.	Tomsk State University	prikat@sibmail.com

Всего: 2

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