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Nitrogen removal from wastewater of a fertilizer and chemical manufacturer with the use of two different hybrid constructed wetland systems planted with Schoenplectus validus

Domingos, S., Germain, M. and Dallas, S.ORCID: 0000-0003-4379-1482 (2008) Nitrogen removal from wastewater of a fertilizer and chemical manufacturer with the use of two different hybrid constructed wetland systems planted with Schoenplectus validus. In: Mathew, K., Dallas, S. and Ho, G., (eds.) Decentralised water and wastewater systems : international conference, Fremantle, Western Australia, 10-12 July, 2006. IWA Publishing, London, pp. 79-86.

Abstract

This study analyses the performance of a hybrid Free Water surface/Vertical flow (FVS/VF) wetland in removing nitrogen from wastewater generated in a fertiliser and chemical manufacturer in Perth, Western Australia during a 14 month period. The constructed wetland currently in use at the fertiliser plant is 12,825 m (135 x 95 m), planted with Schoenoplectus validus, has a vertical flow design and has been operated FWS/ VF conjugated system with a hydraulic load = 3.3 cm/d and a retention time of 18 days. Average load removal rates are: 26% for NH4-N, 52% for N03-N and 32% for TN. Parallel to that, an experiment with wetland mesocosms as conducted, this experiment compared the efficiency of a FWS/ VP wetland (simulation of the industry’s wetland) and an alternative hybrid VP/Horizontal F1o (VF/HF) in removing nitrogen from the industry’s wastewater. Systems were planted with Schoenoplectus validus. The performance in nitrogen removal for the FWS/VP mesocosm was superior to the actual wetland’s performance. The best nitrogen removal rate was achieved by the VF/HF system, with the first VF stage alone removing 82.9% of ammonia in 2.88 days while the FWS/ VF moved 8.2% of the ammonia in 10.8 days.

Item Type: Book Chapter
Murdoch Affiliation: Environmental Technology Centre
School of Environmental Science
Publisher: IWA Publishing
Notes: The International Conference on Decentralised Water and Wastewater Systems was held at Fremantle, Western Australia 10 - 12 July 2006
URI: http://researchrepository.murdoch.edu.au/id/eprint/4285
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