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103. Impact of the Organic Strength of Dairy Wastewater and Vermibed Depth on the Performance of Macrophyte-Assisted Vermifilters.

Author

Bandyopadhyay, Rupam, Chowdhury, Sanket Dey, Bhunia, Puspendu, and Surampalli, Rao Y.

Subjects
IMPACT strength, SEWAGE, CHEMICAL oxygen demand, SUSTAINABILITY
Abstract

In the last few decades, vermifiltration has become a well-known alternative to conventional wastewater remediation methods owing to its economic viability and environmental sustainability. In the present study, we examined the effect of the organic strength [i.e., chemical oxygen demand (COD)] of an influent (i.e., synthetic dairy wastewater) and the depth of the vermibed on the performance of a macrophyte-assisted vermifilter (MAVF), in terms of organic-carbon and nitrogen removal. The to-date inadequately explored possible N-removal pathways in the designed MAVF system were also investigated. The designed MAVF, with its vertical subsurface flow, achieved maximum COD removal up to 96.5 ± 1.5% when the influent COD and vermibed depth were at 1,400 ± 89 mg/L and 20 cm, respectively. Similarly, the MAVF produced a significant reduction in the ammonium–nitrogen (NH4+ –N) and total nitrogen (TN) concentrations, whereas the effluent nitrate (NO3−)–N concentration was markedly enhanced compared to the influent concentration. The experimental run, using an influent COD of 1,400 ± 89 mg/L and a vermibed depth of 50 cm, yielded the maximum NH4+ –N conversion efficiency, at 96.4 ± 1.2%. In the same experimental run, the greatest increase in the NO3− –N concentration (21.5 ± 3 times its influent concentration) was recorded. The TN removal reached a maximum of 71.4 ± 0.7% in the experimental run, with an influent COD of 2,900 ± 94 mg/L and a vermibed depth of 50 cm. [ABSTRACT FROM AUTHOR]

Published
2023
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112. Nanomaterials for Sustainable Society

Author

Shan, Guobin, primary, Jin, Wenbiao, additional, Tu, Renjie, additional, Qu, Yuntian, additional, Wei, Wei, additional, Zhang, Tian C., additional, Surampalli, Rao Y., additional, and Tyagi, Rajeshwar D., additional

Published
2016
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124. Green Nanomaterials

Author

Das, Ratul Kumar, primary, Brar, Satinder Kaur, additional, Verma, Mausam, additional, Tyagi, Rajeshwar D., additional, Surampalli, Rao Y., additional, and Zhang, Tian C., additional

Published
2015
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147. Introduction

Author

Surampalli, Rao Y., primary, Gurjar, B. R., additional, Zhang, Tian C., additional, and Ojha, C. S. P., additional

Published
2015
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150. Carbon Burial and Enhanced Soil Carbon Trapping

Author

Bhattacharya, Indrani, primary, More, T. T., additional, Yadav, J. S. S., additional, Kumar, L., additional, Yan, Song, additional, John, Rojan P., additional, Tyagi, R. D., additional, Surampalli, Rao Y., additional, and Zhang, Tian C., additional

Published
2015
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