Nitrogen removal from wastewater in vertical flow constructed wetlands containing LWA/gravel layers and reed vegetation

被引：59

作者：

Bialowiec, Andrzej ^{[1
]}

Janczukowicz, Wojciech ^{[2
]}

Randerson, Peter F. ^{[3
]}

机构：

[1] Univ Warmia & Mazury Olsztyn, Dept Environm Biotechnol, PL-10900 Olsztyn, Poland

[2] Univ Warmia & Mazury Olsztyn, Dept Environm Protect Engn, PL-10900 Olsztyn, Poland

[3] Cardiff Univ, Sch Biosci, Cardiff CF10 3AX, S Glam, Wales

来源：

ECOLOGICAL ENGINEERING | 2011年 / 37卷 / 06期

关键词：

Sewage sludge thermal treatment; Fly ash; Light weight aggregates; Constructed wetlands; Reed; Nitrogen removal; NITRIFICATION; MEDIA;

D O I：

10.1016/j.ecoleng.2011.01.013

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The influence of light weight aggregates made of fly ash from sewage sludge thermal treatment (FASSTT-LWA) on the nitrogen removal efficiency from artificial wastewater in constructed wetlands (CW) with vertical flow reed bed was investigated. Thirty lysimeters with six different double-layer bed constructions (upper layer of FASSTT LWA with thicknesses of: 0 cm, 12cm, 25cm, 50 cm, and 100 cm of the total depth of the lysimeter, above a lower gravel layer), either with or without reed plants were operated with wastewater hydraulic loading rate of 4.67 mm/d. During a six-month experiment, high efficiency of ammonia removal was observed. The influence of FASSTT LWA as a bed material and the presence of reed on CW treatment efficiency was determined. The highest total nitrogen removal efficiency, 59.5%, was obtained in the CW with double-layer lysimeters consisting of 25% FASSTT LWA (upper layer), and 75% gravel (lower layer), and planted with reed. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：897 / 902

页数：6

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