Wyniki wyszukiwania dla: azot ogolem

• Experience of hybrid constructed wetlands operation in Gdansk region

  Publikacja

  • M. Gajewska
  • H. Obarska-Pempkowiak

  - POLISH JOURNAL OF ENVIRONMENTAL STUDIES - Rok 2007

  The investigation were carried out at five local hybrid constructed wetlands (HCWs), which secured biological treatment of domestic wastewater generated from 15 to 600 pe. Based on over two years monitoring it was indicated that HCWs ensured very effective removal of organic matter from 74.9 to 95.5 COD % in wild range of loadings (1.5 - 17.0g COD/ m3day). Efficiency of total nitrogen removal varied significantly from 23.4 two...

• Removal of organic matter and nitrogen in an horizontalsubsurface flow (HSSF) constructed wetland undertransient loads

  Publikacja

  • A. Albuquerque
  • M. Arendacz
  • M. Gajewska
  • H. Obarska-Pempkowiak
  • P. Randersoen
  • P. Kowalik

  - WATER SCIENCE AND TECHNOLOGY - Rok 2009

  A monitoring campaign in a horizontal subsurface flow constructed wetland under the influence of transient loads of flow-rate, organic matter, nitrogen and suspended solids showed an irregular removal of COD and TSS and lower both removal efficiencies and mass removal rates than the ones observed in other studies for similar operating conditions. This circumstance is associated to the presence of large amount of particulate organic...

• Nitrogen fraction fluctuation during wastewater treatment in a multistage treatment wetland

  Publikacja

  • M. Gajewska

  - Rok 2010

  Although the size of pollutants discharged to a WWTP plays an important and often underestimated role in characterizing treat ability and hence the degree of contaminant removal of wastewater. From one hend In order to obtain efficient nitrogen removal in thedenitrification process, sufficient amounts of bioavailable carbon source should be ensured bur for the other hand in TWs, particulates from the wastewater are naturally trapped...