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  • 标题:COD FRACTIONS CHANGES DURING SEWAGE TREATMENT WITH CONSTRUCTED WETLAND
  • 本地全文:下载
  • 作者:Joanna Smyk ; Katarzyna Ignatowicz
  • 期刊名称:Inżynieria Ekologiczna
  • 印刷版ISSN:2081-139X
  • 电子版ISSN:2392-0629
  • 出版年度:2015
  • 卷号:16
  • 页码:43-48
  • DOI:10.12911/22998993/2804
  • 出版社:Polish Society of Ecological Engineering (PTIE)
  • 摘要:The purpose of the presented research work was to find out COD fractions in raw wastewater and during treatment with constructed wetland (CW) system.The tests were performed in CW system with average flow of about 4 m3/day.In raw wastewater the highest concentration of fraction in organic suspended solid easy biodegradable (XS – 250 mg O2/l) was observed.The same situation was with dissolved organic easy biodegradable matter (SS – 250 mg O2/l).Lower quantity of non-biodegradable fractions dissolved and in suspended solids were observed (SI – 27 mg O2/l, XI – 83.33 mg O2/l).More than 80% of total COD was as biodegradable fractions (SS XS).After treatment with CW system the highest concentration was observed for dissolved non-biodegradable fraction (SI – 27 mg O2/l).Lower concentration was for biodegradable fraction in suspended solid (XS – 3.33 mg O2/l).More than 89% of total COD was in biological non-biodegradable fraction (SI XI).
  • 关键词:COD ; sewage treatment ; wetland
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