Cleaner water for future generations
EnviDan specializes in environmental solutions within water resources, water supply, climate, energy and waste water. EnviDan has been on the market since 1995, and has build up an significant experience and knowledge in the environmental sector.
EnviDan was originally established to aid the Danish municipalities in all aspects of wastewater treatment, including the construction of wastewater treatment plants and full-scale sewer systems. We also offer a range of software solutions with the purpose to optimize and assure the quality of data and work flows in utility companies and municipalities both within the water and the wastewater business.
We have approx. 200 employees in four offices in Denmark, one i Sweden and one in Norway. The employees consists of a mixture of young graduates and highly experienced personnel.
The project consists of development and scientific documentation of cleaning ability, hydraulics, evaporation, and biodiversity in the holistic LAR-road rain gardens. The aim of the project is to achieve improved purification of road water in LAR-road rain gardens, which in comparison with pipe solutions, have a lower CO2 footprint and contribute to a green profile […]
With a desire to use the resources in wastewater, BlueKolding has established possibly the first water turbine in the world that recovers energy in wastewater. In collaboration with Aarsleff and BlueKolding, EnviDan has designed and projected the solution. Where the outlet line from BlueKolding’s central treatment plant disappears into Lillebælt – a strait between Funen […]
At EnviDan, we are proud that we will once again have the opportunity to use our specialist competencies in wastewater, when we, together with BIOFOS, will be in charge of the lighthouse project VARGA, which has been granted just over DKK 19 million. DKK in grants from the Ministry of the Environment and Food under the MUDP program.
This is a novel, cost-efficient and sustainable method to prevent problems with hydrogen sulphide in sewer systems and wastewater treatment plants, using mussel shells available in abundance along the Danish and Swedish coast lines. The method has previously been tested by Aarhus Vand (Denmark) in large scale and was now optimized and tested for small […]
This concept changes the storing method of water – in larger quantities – from volume in concrete structures to volume in horizontal ø3m pipes. The concept is applicable in a number of existing and new tank storage systems, and the benefits are many, as regards both water safety, flexible volumes, easy access and self-cleaning. The […]
The Automated Sewer Inspection Robot (ASIR) is a research project that consists of three main parts: An autonomous CCTV-inspection crawler, automatic annotation of the data using computer vision techniques and applying the data for better asset management. The main objective of the project is to extend the lifetime of sewer pipes with 10 %, which today in general are replaced re-maturely. The life extension translates into an annual saving of approx. 24 mil. EUR in Denmark alone.
It is expected that 10 billion people will inhabit the world in 2050, which will significantly increase the pressure on the food supply chains. To meet the UN Sustainable Development Goal (SDG) #3, “zero hunger”, new processes for nutrient utilization and food production must be investigated and evaluated. EnviDan has, together with several strong partners, […]
In 2011, the water utility TREFOR Vand carried out an analysis of its water loss to address its high NRW issue. Afterwards, an action plan for 2012-2014 was developed using the IWA methodology. The action plan included implementation of KeyZones, pressure management, active leakage detection and optimisation of operation procedures. All mechanical meters have been […]
EnviStyr Web is a unique web and module-based online monitoring system which integrates easily with all SCADA-systems. EnviStyr Web provides an overview of energy optimization, and with EnviStyr Web it is possible to monitor energy consumption and use the calculated key figures for ongoing comparison/ benchmarking. Also EnviStyr Web follows NH4 and NO3 in the […]
In order to identify the possibilities for reducing non-revenue water in Hanoi, EnviDan has conducted a feasibility study, which points out the way forward in relation to NRW-reduction. The focus of the study has been to find the current Non Revenue Water (NRW) level and to make a cost/benefit analysis to improve the existing condition. […]
EnviDan International has successfully conducted an R&D project in China upgrading a wastewater treatment plant for 200.000PE. At the plant in Ma An Shan EnviDan has implemented the ARP process and online control system EnviStyr and test results show significant improvements in effluent quality. With support from the Danish EPA and in cooperation with Aihua […]
Biological phosphorous removal with Side Stream Hydrolysis (SSH) When introducing side stream hydrolysis on a part stream of the return sludge, an easily degradable carbon source is obtained for biological nitrogen and phosphorus removal. The hydrolysis produces easily degradable organic material (VFA) on a small flow of the return sludge with long retention time (20 […]
EnviDan supplies innovative solutions to the challenges regarding overload and bypass of existing plants. We can successfully implement the ARP-process at any WWTP to increase the organic or hydraulic capacity with up to 60% and thereby avoid or limit an expansion. When using ARP, a part of the biological process is moved from the original […]
There are numerous companies located along the River Gudenå in Jutland with core competencies within climate, water technology, and environmental technology. Many are leaders of their field in Denmark and several of them also have a recognised international profile. With water as their focal point, the companies cover a wide range of competencies in: Energy […]
The exploitation of freshwater resources, population growth and the impacts of climate change calls for water management based on sound knowledge and sustainable practices. This White Paper covers the Danish approach to Integrated Water Resource Management and addresses complex water challenges.
Total energy renovation of the treatment plant at Egaa, just outside Aarhus, means that Aarhus Vand is setting new standards for developing treatment plants from energy guzzlers into energy producers. This has happened through entirely new technologies that exploit the green energy-production potentials in wastewater. The topping-out is a milestone in the technological development of […]
Climate change is affecting global rainfall patterns and water distribution. Since there is approximately 100 times more groundwater on Earth than fresh surface water, it makes sense to exploit groundwater as a source of water. The aim of this white paper is to share some of Denmark’s technologies, tools and methods for groundwater mapping and hydrogeological modelling.
On a global scale, less than half of all wastewater is collected and less than one fifth is treated. This has led to severe environmental degradation of many inland and sea waters around the world. This white paper provides lessons learned from Danish stakeholders within wastewater treatment.
The shift from a conventional wastewater treatment plant towards a resource recovery facility has become a priority focus in Denmark. Consequently, BIOFOS is now in the transfer process towards optimising resources from waste without compromising the environment.
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.
Good rainwater management can make cities healthier places to live, resilient towards climate change and more sustainable overall. Population growth and urbanisation, floodings as well as more frequent and longer periods of droughts all encourage an optimised use of rainwater in cities. Traditionally speaking, climate adaptation seeks to lower the risks posed by the consequences of climate […]