Wastewater treatment using tidal flow wetlands

Weinheimer, Ina (2015) Wastewater treatment using tidal flow wetlands. [USQ Project]

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Abstract

Over the last century wastewater treatment has evolved immensely. This development is divided into two different ways of wastewater treatment. There are highly engineered wastewater treatment systems, which can achieve high treatment standards on a small area. And on the other hand there are natural treatment systems, such as constructed wetlands (CWs) that need large areas to achieve suitable treatment. Besides the difference of land area required by each of those systems they largely differ in the energy they require to perform such wastewater treatment.

This study investigates a new type of wastewater treatment system, the Tidal Flow Wetland (TFW). This system is part of a new generation of engineered treatment wetlands that aim to close the gap between highly engineered smaller systems and large CWs that treat wastewater naturally.

This study provides a comparison of different wastewater treatment options that are in direct competition to TFWs. It determines advantages and disadvantages of various systems for different situations. Furthermore a hypothetical wastewater situation for a small residential development has been developed to be able to compare a TFW and a conventional CW.

Overall the TFW achieved the same treatment standard to the hybrid conventional CW on less than a quarter of the area, while keeping energy consumption minimal. The results of the comparison also confirm the outstanding total nitrogen (TN) removal capability. While the TFW could achieve TN removal on only 24 m2, the hybrid system required more than half of its total size (284 m2 of 484 m2) for nitrate removal alone.


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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Civil Engineering (Honours) project
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Supervisors: Bundschuh, Jochen
Date Deposited: 06 Jun 2016 05:55
Last Modified: 06 Jun 2016 05:55
Uncontrolled Keywords: Tidal flow wetlands, wastewater treatment, sustainability
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090508 Water Quality Engineering
URI: http://eprints.usq.edu.au/id/eprint/29248

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