Special Issue "Constructed Wetlands Systems and Management"

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".

Deadline for manuscript submissions: closed (29 February 2016).

Special Issue Editors

Prof. Dr. Alan Howard
E-Mail Website
Guest Editor
Department of Geography and Environmental Science University of Reading , Reading, RG6 6AB, UK
Interests: constructed wetlands; cyanobacteria; water resource management; computer
Special Issues and Collections in MDPI journals
Prof. Dr. Defu Xu
E-Mail Website
Guest Editor
School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, 210044 Nanjing, China
Interests: wetland plants; substrate; enzyme; clogging; purifying capacity; nitrogen; phosphorus
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

The use of constructed wetland systems for purifying wastewater is an area of increasing importance in water resources management. Such systems typically include a combination of substrate, wetland plants, microorganisms, and fauna, such as earthworms. Efficiency of operation depends on composition and is variable over time due to reduced purifying capacity of constituents, changes in dissolved oxygen and susceptibility to clogging of the constucted wetland system. Therefore, the design and management of constructed wetland systems is very important in maintaining purifying capacity and system sustainability. This Special Issue of Water will bring together current knowledge of the design, operation and management of constructed wetland systems. The Special Issue will help inform the future development and implementation of effective constructed wetlands.

Dr. Alan Howard
Prof. Dr. Defu Xu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • constructed wetlands
  • wastewater
  • wetland plants
  • water resources management
  • purification

Published Papers (9 papers)

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Research

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Article
Flume Experiments for Optimizing the Hydraulic Performance of a Deep-Water Wetland Utilizing Emergent Vegetation and Obstructions
Water 2016, 8(6), 265; https://doi.org/10.3390/w8060265 - 21 Jun 2016
Article
Evaluation of Phytodesalination Potential of Vegetated Bioreactors Treating Greenhouse Effluent
Water 2016, 8(6), 233; https://doi.org/10.3390/w8060233 - 31 May 2016
Article
Performance of a Constructed Wetland and Pretreatment System Receiving Potato Farm Wash Water
Water 2016, 8(5), 183; https://doi.org/10.3390/w8050183 - 29 Apr 2016
Article
Decline in Performance of Biochemical Reactors for Sulphate Removal from Mine-Influenced Water is Accompanied by Changes in Organic Matter Characteristics and Microbial Population Composition
Water 2016, 8(4), 124; https://doi.org/10.3390/w8040124 - 30 Mar 2016
Article
Salts Removal from Synthetic Solution-Potash Brine by Non-Planted Constructed Wetlands
Water 2016, 8(4), 113; https://doi.org/10.3390/w8040113 - 24 Mar 2016
Article
The Potential Growth of Sugarcane in Constructed Wetlands Designed for Tertiary Treatment of Wastewater
Water 2016, 8(3), 93; https://doi.org/10.3390/w8030093 - 10 Mar 2016
Article
Efficiency of a Horizontal Sub-Surface Flow Constructed Wetland Treatment System in an Arid Area
Water 2016, 8(2), 51; https://doi.org/10.3390/w8020051 - 05 Feb 2016
Article
Effect of Plant Harvesting on the Performance of Constructed Wetlands during Summer
Water 2016, 8(1), 24; https://doi.org/10.3390/w8010024 - 16 Jan 2016

Review

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Review
Constructed Wetlands for Agricultural Wastewater Treatment in Northeastern North America: A Review
Water 2016, 8(5), 173; https://doi.org/10.3390/w8050173 - 27 Apr 2016

Submitted Abstracts

Title: Applicability of Constructed Wetlands to Treat Source-Separated Domestic Grey Wastewater-A Decade of
Dutch Experiences
Author: Tiemen A. Nanninga 1,*,
Affiliation: 1 Lettinga Associates Foundation, P.O. Box 500, 6700 AM Wageningen, The Netherlands;
* Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +31-317-483-202.
Abstract
Introduction: Constructed wetlands (CWs) are increasingly being implemented as a decentralised wastewater
treatment technology in both Northern and Southern countries. Although CWs have been used to treat
wastewater since the 1950’s, most of the experiences documented focus on technical performances during the
first three years after construction. Thus while CWs are often promoted as being a suitable technology for
wastewater treatment, long-term non-technical experiences are poorly documented.
Aim: The aim of this paper is to learn from experiences with CWs that treat grey wastewater at neighbourhood
scale for a decade or more and to identify possible constraints for future implementation of CWs. Three case
study sites in the Netherlands (Drielanden in Groningen; Polderdrift in Arnhem; Lanxmeer in Culemborg) serve
to assess socio-technical factors related to the operation of CWs. In addition, the performance of CWs
functioning longer than eight years will be assessed by conducting a sampling programme at one site (Lanxmeer)
under challenging conditions (winter). The constraints identified will be analysed in order to allow for
translocation to Southern countries.
Methodology: The implementation process, costs, operation and maintenance (O&M) requirements and
structures, functioning, performance, perceptions and experiences were investigated using 34 semi-structured
interviews with users, operators, policy makers, constructors and consultants. Literature reviews were used to
gather background information about the cases, wastewater, CWs and results from previously performed
sampling programmes. 36 Influent and effluent composite samples were collected during the last week of
January and first week of February 2011 from three vertical sub-surface flow CWs in Lanxmeer and analysed for
BOD5, COD, TKN, NO3-, NO2-, NH4+, Ptotal, TSS, E.coli, dissolved O2, pH and Temperature.
Results: Results show that annual renewal and O&M costs (€230-€285/household) were a bit lower than the
annual costs of the conventional wastewater treatment system in Culemborg (€292.06-€398.18/household), that
maintenance requirements proved to be more work and more complex than initially anticipated and that all CWs
needed adjustments or major revisions during start-up. In all three cases there were people highly motivated to
ensure that the CWs were implemented and used. Very good removal efficiencies were found during the
sampling programme (BOD5: 97.7-99.9%, COD: 89.1-96.7%, Ntotal: 42.8-95.0%, NH4
+: 66.5-99.7%, Ptotal: 69.4-
97.5%, TSS: 19.4-96.7%, E.coli reduction of Log 2.5-5.2), which were similar or better compared to those of the
nearby conventional wastewater treatment plant. In general operators and users were positive about the CWs.
Conclusions: CWs have shown to be comparable in costs and efficiency to conventional technologies, yet the
start-up and operational and maintenance requirements proved to be more demanding than anticipated. Thus
despite often being promoted as robust, simple and ideal for rural areas, CWs have critical boundary conditions
that are actually quite complex and need to be addressed to ensure successful functioning.
Keywords: constructed wetlands, grey wastewater, decentralised, performance, operation and maintenance,
costs, implementation, users’ perceptions

Title: Economic Valuation of Constructed Wetlands with Treated Wastewater: A Review of Environmental Valuation Techniques and Ecosystemic Services
Author: Oscar Alfranca
Abstract: The objective of the paper is to revise the main literature on the use of environmental valuation techniques for the calculation of the environmental value of wetlands with treated wastewater. In the paper the efficiency of the different environmental valuation techniques to evaluate the main ecosystemic services related to wetlands will be discussed, both considering the relevance of the different economic and hydrological conditions. So finally, the quality of the different environmental valuation techniques is examined, and also the efficiency of these techniques to quantify the different environmental and economic characteristics of the constructed wetlands.

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