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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. (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.

Publication 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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