Performance of an anaerobic digester-constructed wetland system for a small community

被引：46

作者：

Barros, Pilar ^{[1
]}

Ruiz, Isabel ^{[1
]}

Soto, Manuel ^{[1
]}

机构：

[1] Univ A Coruna, Dept Phys Chem & Chem Engn 1, Fac Sci, La Coruna 15008, Spain

来源：

ECOLOGICAL ENGINEERING | 2008年 / 33卷 / 02期

关键词：

anaerobic digesters; constructed wetlands; rural sanitation; sustainability;

D O I：

10.1016/j.ecoleng.2008.02.015

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

This paper describes the operation of an anaerobic digester-constructed wetland system treating the overall effluent of a rural community of about 30 inhabitants. The system comprised two identical upflow anaerobic digesters of 3.6 m(3) each and two horizontal flow constructed wetland (subsurface and surface flow) of 36 m(2) each. The four units were connected in series. Anaerobic digesters provided a high total suspended solids (TSS) removal (80-90%),about 65% removal of total chemical oxygen demand (TCOD) and 40-50% removal of biological oxygen demand (BOD5). Constructed wetlands reached 35% TSS removal and 70-80% of TCOD and BOD5 removal. Average effluent concentrations for the first and second year of operation were 49 and 28mgTCOD1(-1), 29 and 15mgBOD(5)1(-1) and 23 and 20 mgTSS1(-1). During the second year of operation, the overall system reached faecal coliforms removal of 2.1 log units, total nitrogen removal of 52% and total phosphorus removal of 38%. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：142 / 149

页数：8

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