Cities worldwide face pressure from population growth, an aging and deteriorating water infrastructure and climate change. As the demand for water keeps increasing, a growing number of cities struggle to provide a sustainable and uninterrupted supply of clean drinking water. Moreover, in areas with high population density, a lack of adequate wastewater treatment pose a significant risk to both human health and the environment. Finally, the increased frequency of extreme weather events is forcing cities to become more climate resilient.
Ensuring long-term water security in cities requires a holistic and integrated approach to urban water management. This includes the availability of high quality water sources, effective treatment plants for both water and wastewater as well as an efficient distribution network with minimum water loss. Blue-green infrastructure can help cities improve their resilience to climate change and the liveability for its citizens.
New EU rules aim to ensure better drinking water and less waste
New EU directive map out how drinking water quality and supply can improve across the EU. Denmark has helped to focus on water waste in the revised EU directive aimed at ensuring consumers healthy and clean drinking water.
3 examples of holistic urban solutions: a water & climate adaptation perspective
Our cities are growing and so is the need to make them more sustainable and liveable. In this month’s article, we gather 3 examples of holistic urban solutions from a water and climate adaption perspective that contribute to creating liveable cities.
Flood prevention in Aarhus River Project
This project is about flood prevention and preventing wastewater from overflowing into lakes, streams and bay by creating large basins and optimal control of the basins, sewerage plants and water treatment plants. In 2005, the Municipality of Aarhus decided to improve the quality of the water hygiene in the receiving waters through the Aarhus River […]
The harbour turns blue in Copenhagen: The Harbour Baths
The idea of swimming in Copenhagen’s harbour would have been out of the question fifteen years ago. Close to 100 overflow channels fed wastewater into the harbour making the water heavily polluted. We addressed the problem by investing in a complete modernisation of the sewage system. The water quality improved, and the City of Copenhagen was […]
Refrigeration plants and flood warning to mitigate climate impacts in developing countries
Two partnerships with Danish participation are supported by P4G – Partnering for Green Growth and the Global Goals 2030 – to find solutions to curb the consequences of climate change in Africa and Asia. The solutions are based on new technology and local cooperation in developing countries.
Assisting South Africa in meeting issues of water security
Like many other countries, South Africa faces severe challenges in terms of water and energy security. Danish companies and authorities aim to assist South Africa to catalyse their green transition and meet water challenges at African Utility Week 2019.
Wastewater and seawater tested as sources for Copenhagen district heating
A new heat pump in Copenhagen will collect energy from both wastewater and seawater and test how the energy can be used in district heating. The capacity of the heat pump corresponds to district heating for 1,100 Copenhagen households.
Reducing urban water loss
25-50% of all distributed water globally is lost or never invoiced due to illegal connections, inaccurate billing systems, inaccurate metering, leakages, deteriorating infrastructure and wrong water pressure management etc. – or in short Non-Revenue Water (NRW). This white paper examines how water utilities can improve efficiency and meet future demand for water by reducing Non-Revenue Water.
Maximizing the value of wastewater in Odense
Modern wastewater treatment is about cleaning water, but also about increasing efficiency, reducing energy consumption and producing energy. VCS Denmark’s largest wastewater treatment plant, Ejby Mølle, is a technological frontrunner in this field. The plant treats wastewater from most of Odense municipality which produces more than 20 million cubic metres of wastewater annually. The wastewater […]
Permeable public roads: Reducing runoff and stormwater issues
In 2014, VCS Denmark opened Denmark’s first 100 % permeable public road, Agerlandsvej in Odense. Paved with porous asphalt, the road captures surface runoff (and stormwater in more extreme cases) and lets the water seep to a stone aggregate reservoir underneath. The reservoir temporarily stores the water before infiltrating it into the subsoil. Permeable pavement […]
Sustainable urban drainage systems
As the climate changes and the number and frequency of rainfall events increases, so does the need for intelligent rainwater management solutions. This White Paper presents insight into lessons learned from Danish stakeholders within rainwater management and Sustainable Urban Drainage Systems (SUDS).
Unlocking the potential of wastewater
On a global scale, less than half of all wastewater is collected and less than one fifth is treated. This and the threat of water scarcity underline the need for more efficient and smarter wastewater treatment across the world. This white paper provides lessons learned from Danish stakeholders within wastewater treatment.
Bathing water quality in the harbour requires a modern sewer system
Copenhagen is one of the few cities in the world where you can safely bathe in the harbour. This is largely owing to the extension and upgrading of the sewer system that has taken place in the recent years. Among other things realized through closing of many of the outlets where combined sewer overflow was previously discharged in connection with heavy rain. Instead, large tanks have been set up for collection and delay of the wastewater, and control of sewer system and wastewater treatment plants has been introduced.
The Five Gardens (Digterhaven) exploit torrential rains
The City of Sønderborg repeatedly had problems with flooding due to heavy rain. In September 2012, the utility company Sønderborg Forsyning therefore started to build five rain gardens which were to delay the rainwater from cloudbursts and help to prevent future flooding. Instead of direct rainwater to the sewer, the rainwater was used as a […]
Rethinking urban water for new value in cities
Sustainable solutions are no longer a choice for most societies: they’re a must. Especially in our cities. Inside this White Paper you can find case examples of how to rethink urban development and gain greater value from investments in the city’s blue infrastructure.