Developing the next generation of wetland technology.

Lead Research Organisation: Cranfield University
Department Name: School of Water, Energy and Environment

Abstract

This project aims to determine the best designs for the intensification of wetland technology and identify the most suitable wetland flowsheets that incorporate METlands to deliver high quality effluents at low footprint, low carbon, and low whole life costs.
Four key objectives will deliver the overall aim:
Build, operate and monitor a secondary treatment METland cell at demonstration scale under UK conditions.
Build, operate and monitor a METland technology for crude sewage treatment at pilot scale.
Determine the maximum loading rate that a crude sewage system could withstand before significant clogging develops and propose ways to manage this.
Quantify and test the potential additional benefits that the use of METland technology could contribute to the UK's wastewater treatment strategy
Benchmark the tested flowsheets against UK conventional small works flowsheets in terms of treatment performance and whole life costs.

Planned Impact

Water-WISER will train a cohort of 50 British research engineers and scientists and equip them to work in challenging environments both in the low-income settings of rapidly growing poor cities and in the changing urban environment of the UK, Europe and other regions with a historic endowment of aging infrastructure. The vision is for a generation of engineers with the skills to deliver the trans-disciplinary innovations needed to ensure that future water, waste and sanitation infrastructure is resilient to the stresses posed by rapid urbanisation, global climate change and increasingly extreme natural and man-made disasters. Our alumni will address the urgent need to re-imagine urban spaces as net contributors to ecological and environmental well-being rather than being net users of vital resources such as energy, nitrogen, phosphorus and carbon. These new leaders will be an essential resource if the UK is to deliver on its commitment to the United Nations' Sustainable Development Goals (SDGs), particularly SDG 6 which calls for universal access to safely managed water and sanitation services, within planetary and local ecological boundaries. This next generation of research engineers will enable UK-based engineering consultancies, manufacturers, and utility companies to grow their share of the expanding global market for water and waste services, for example; in the water services industry from 3% to 10% (an increase of £33 billion per annum) by 2030, and attract significant inward investment.
The research which Water-WISER cohorts enable will form the basis of new innovations in the design and delivery of resilient infrastructure and services. Innovations developed by Water-WISER graduates will inform how growing cities are designed and built in the global south and will be used to inform the re-engineering and replacement of the aging infrastructure on which the UK's water and waste services are currently reliant. Our alumni will form the new generation of leaders who will play a central role in securing a larger share of the international water and waste management consultancy market to UK consultancies. The network of expertise and skills created by Water-WISER will enhance potential for collaborations between major UK players (for example strengthening links between UK consultancy, the Department for International Development, and leading UK water agencies such as WaterAid and Water and Sanitation for the Urban Poor) and between UK companies and partners in the global south including international investors such as the World Bank, European Investment Bank, African Development Bank, Asian Development Bank, Inter-American Development Bank and the International Finance Corporation. Graduates of Water-WISER will enter industry, academia and development agencies having spent a substantial period (minimum of six months) embedded in an industry or development partner organisation delivering their field-based research. Water-WISER students will thus gain a unique combination of trans-disciplinary training, field experience and cohort networking; they are destined for leadership roles in UK and international engineering and development consultancies, academia, international development banks, international agencies such as the United Nations and international non-governmental organisations.

Publications

10 25 50

Studentship Projects

Project Reference Relationship Related To Start End Student Name
EP/S022066/1 01/06/2019 30/11/2027
2438975 Studentship EP/S022066/1 01/10/2020 30/09/2024 Chimamaka Amala
 
Description The findings in this study so far provides a new understanding of the influence of seasonal changes in temperature on the performance of the METland. Despite seasonal changes in temperature (winter, autumn, summer, spring), the METland has shown a steady performance in treating secondary sewage.

Also, the findings in this study represents a major breakthrough on the application of METland in treating raw (untreated) sewage, which shows a positive increase when the volume of water increase compared with traditional gravel based constructed wetlands. Ongoing monitoring of Greenhouse gas (GHG) emission also shows lower emissions compared to other grey technologies used in wastewater treatment.
Exploitation Route The outcome of this research can be utilized by the relevant regulatory bodies (for example the Environment Agency) in reviewing discharge compliance limits and/or permit exemptions when METlands technologies are used for wastewater treatment. Following GHG monitoring from a pilot to field, the outcome can be fed-back into the wastewater industries and IPPC in developing carbon accounting tools that reflect the low GHG emission from METlands during wastewater treatment.
findings in this study so far provides a new understanding of the influence of seasonal changes in temperature on the performance of the METland. Despite seasonal changes in temperature (winter, autumn, summer, spring), the METland has shown a steady performance in treating secondary sewage.
Sectors Environment,Government, Democracy and Justice

 
Description Although this is ongoing, clear impacts of the findings of this research have been identified, the water sector aims to achieve a NET Zero 2030 and in doing so is seeking to drive alternative treatment processes that are nature-based solutions (NBSs) in the waste water sector. Once the objectives of the research have been concluded and outcomes passed on to partners, the impact of the research will hopefully be seen with an increase to drive in the use of METlands and other NBSs in treating sewage by regulators and wastewater industries.
Impact Types Policy & public services

 
Description Studentship Agreement- Developing the next generation of wetland technology 
Organisation Anglian Water Services
Country United Kingdom 
Sector Private 
PI Contribution The funding received from partners have been successfully utilized in building and operating a (6.23m2) Secondary METland and 7 (1m3 IBC) crude METland and gravel based CWs at Cranfield University treatment works and there are ongoing monitoring to meet the objectives of this research.The results so far from the emerging Microbial Electrochemical Technology Intensified treatment wetland (METland) study shows a positive impact in upscaling the METland from a secondary and tertiary wastewater treatment as a polishing effect to raw sewage treatment. This is particularly important and in line with the drive to implement alternative treatment processes that are nature-based solutions (NBSs) in the waste water sector. Furthermore, ongoing study hypothesizes a reduced GHG emission from METlands compared with conventional wastewater treatment technologies an approach that is crucial in meeting NET Zero 2030.
Collaborator Contribution There have been in-kind contributions in providing the patent METfilter substrate, financial contributions and knowledge sharing with partners towards the overall aim and individual objectives of the research.This also includes regular meetings to discuss key findings, raising relevant questions and discussing potential additional collaborations.
Impact Ongoing
Start Year 2020
 
Description Studentship Agreement- Developing the next generation of wetland technology 
Organisation Scottish Water
Country United Kingdom 
Sector Public 
PI Contribution The funding received from partners have been successfully utilized in building and operating a (6.23m2) Secondary METland and 7 (1m3 IBC) crude METland and gravel based CWs at Cranfield University treatment works and there are ongoing monitoring to meet the objectives of this research.The results so far from the emerging Microbial Electrochemical Technology Intensified treatment wetland (METland) study shows a positive impact in upscaling the METland from a secondary and tertiary wastewater treatment as a polishing effect to raw sewage treatment. This is particularly important and in line with the drive to implement alternative treatment processes that are nature-based solutions (NBSs) in the waste water sector. Furthermore, ongoing study hypothesizes a reduced GHG emission from METlands compared with conventional wastewater treatment technologies an approach that is crucial in meeting NET Zero 2030.
Collaborator Contribution There have been in-kind contributions in providing the patent METfilter substrate, financial contributions and knowledge sharing with partners towards the overall aim and individual objectives of the research.This also includes regular meetings to discuss key findings, raising relevant questions and discussing potential additional collaborations.
Impact Ongoing
Start Year 2020
 
Description Studentship Agreement- Developing the next generation of wetland technology 
Organisation Severn Trent Water
Country United Kingdom 
Sector Private 
PI Contribution The funding received from partners have been successfully utilized in building and operating a (6.23m2) Secondary METland and 7 (1m3 IBC) crude METland and gravel based CWs at Cranfield University treatment works and there are ongoing monitoring to meet the objectives of this research.The results so far from the emerging Microbial Electrochemical Technology Intensified treatment wetland (METland) study shows a positive impact in upscaling the METland from a secondary and tertiary wastewater treatment as a polishing effect to raw sewage treatment. This is particularly important and in line with the drive to implement alternative treatment processes that are nature-based solutions (NBSs) in the waste water sector. Furthermore, ongoing study hypothesizes a reduced GHG emission from METlands compared with conventional wastewater treatment technologies an approach that is crucial in meeting NET Zero 2030.
Collaborator Contribution There have been in-kind contributions in providing the patent METfilter substrate, financial contributions and knowledge sharing with partners towards the overall aim and individual objectives of the research.This also includes regular meetings to discuss key findings, raising relevant questions and discussing potential additional collaborations.
Impact Ongoing
Start Year 2020