|Table of Contents|

Dominant Removal Mechanisms of Phosphorous in Combined Pondwetland Ecological Treatment System

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2005年05期
Page:
109-112
Research Field:
Publishing date:

Info

Title:
Dominant Removal Mechanisms of Phosphorous in Combined Pondwetland Ecological Treatment System
Author(s):
PENG Jian-feng~
1,2),WANG Bao-zhen~2,WANG Lin~3
Keywords:
phosphorous fract ion removal mechanism sediments combined ecological treatment
PACS:
X703;
DOI:
-
Abstract:
In order to determine the influence of environmental variations on phosphorus removal mechanisms in a combined pond-wet land system, the dominant removal mechanisms of phosphorus in different treatment unit and their influence on phosphate transformation between sediment and water column were invest igated through analyzing the differences of phosphorus fractionation with water conditions. The results show that the precipitation of particulate phosphorous, the adsorption/ complexation of dissolved inorganic phosphorous and the filtration of particulate phosphorous were the dominant removal mechanisms of different units in turn. Variations of dominant removal mechanisms produced there were some similarities and differences exist ing in sedimentary phosphorous fract ionation in each unit. Additionally, it was the precipitat ion process of suspended phosphorus that played a relative important role in phosphorus removal in cold periods, and that was adsorption/ complexation of dissolved inorganic phosphorus in warm periods. Therefore, environmental variations evidently affects the phosphorus removal performance in the ecological treatment system.

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Last Update: 2013-05-29