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Full-Scale Experiment on Domestic Wastewater Treatment by Combining Artificial Aeration Vertical- and Horizontal-Flow Constructed Wetlands System

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Abstract

To improve domestic wastewater treatment for total nitrogen (TN) removal, a full-scale constructed wetlands combining an artificially aerated vertical- (AVCW) and a horizontal-flow constructed wetland (HCW) was completed in July 2007. The system covered a total area of 7,610 m2. From 2 July 2007 to 7 August 2008, the treatment capacity was 2,076 m3 day−1 with an aeration quantity of 7,400 m3 day−1. The system effectively reduced the average annual output of BOD5 (52.0 %), NH4–N (58.41 %), and TP (41.61 %), although the percentage reductions of other pollutants, including chemical oxygen demand (34.1 %), suspended solid (38.9 %), and TN (31.05 %) were lower. The purpose of the HCW was for denitrification of the effluent from the AVCW, and annual average of 34.27 % of NO3–N was removed compared with the reading at the AVCW outlet. With hydraulic loading increased to 4,152 m3 day−1 from 9 September to 23 November 2007, the removal rate for NO3–N from the HCW decreased substantially from 48.80 to 18.86 %. The total removal rates of NH4–N showed significant positive correlation with DO content in the AVCW and with total TN removal rates for the combined system (P 

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Ketersediaan

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Informasi Detail

Judul Seri

Water Air Soil Pollution (2012) 223:5673–5683

No. Panggil

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Penerbit

: Springer Netherlands., 2012

Deskripsi Fisik

Water Air Soil Pollution (2012) 223:5673–5683

Bahasa

English

ISBN/ISSN

1573-2932

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

ILMU LINGKUNGAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

Ety

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