Better nutrient cycle from wastewater with RAVITA – production testing starts

Using the so-called RAVITA process it is possible to reutilize phosphorus nutrient. The nutrient cycle reduces the use of virgin phosphorus. A demo plant will be built at Viikinmäki, Finland's wastewater treatment plant in 2018.

Click Image to Enlarge
Ravita (12)

The production of phosphoric acid will be tested in the demo plant to optimize the process and calculate cost benefits. (HSY)

The production of phosphoric acid will be tested in the demo plant to optimize the process and calculate cost benefits. Helsinki Region Environmental Services HSY started research and development of RAVITA process in 2014. In the RAVITA process phosphorus is recovered as phosphoric acid which can be utilized in a broad range of industrial processes and fertilizer production. In addition, the recovery of phosphorus can be combined with nitrogen recovery, resulting in ammonium phosphate as the end product.

Nutrients from wastewater 

Wastewater will become a resource which will be increasingly utilized in treatment plants of different sizes in the future. The main source of phosphorus is virgin apatite reserves in the soil, which are mainly located outside Europe. There is varying information about their sufficiency, which is between 60 and 400 years, and the European Union has included phosphorus on the list of critical materials.

- The RAVITA process is highly scalable and suitable for various treatment plants. This increases the number of phosphorus-removing treatment plants and reduces nutrient loading in receiving waters. More advanced, separate nutrient recovery techniques are already available on the market, but these technologies are not, as such, suitable for Nordic treatment plants, says Head of Department Mari Heinonen.

The RAVITA project has attracted interest both domestically and abroad. The process has already been presented internationally at several conferences and events and has also attracted interest from companies. RAVITA was selected in June 2017 as a Government Key project along with two other nutrient recovery projects. In spring 2018, the RAVITA project also won the SITRA municipalities’ circular economy action award and the innovation competition for the EU funded BONUS RETURN project for the improvement of the state of the Baltic Sea. The project has been funded by the Finnish Ministry of the Environment as part of the RAKI program.

 

More information about the project:  hsy.fi/ravita

More about wastewater treatment in HSY

 

HSE | 20.8.2018

Latest articles

Research report: Predictive Maintenance 4.0

A growing number of companies want to use big data analytics in their predictive maintenance and are also investing in the resources needed for this. Of the companies already using this technology, no less than 95 percent say that they have already achieved concrete results. This is the conclusion of a follow-up study conducted by PwC and Mainnovation among 268 companies in the Netherlands, Germany and Belgium.

Asset Management | 17.1.2019

12 Helpful Tips for Doing IT Service Desk

Over the years, the evolution of technology and the adaptability of the people to it, has been increasing drastically. This process has brought about a boom in the service sector, making the IT subunit of it, the most successful.

Cmms | 27.12.2018

It’s About “Time”

At Bentley Systems, we have been talking to our users, especially owners, and it has become clear that despite our collective best efforts, there is a gap in the market.  Owners need easy access to real-time, accurate, engineering information and they need tools that make it simple to keep engineering data up-to-date, especially those engaged in brownfield and revamp projects.  It takes too much time and effort to gather and verify the information they need to make decisions effectively. And for older plants that do not have 3D models, there is simply no visual way to verify and check information easily.

Partner Articles | 10.12.2018

How to Choose an Air Compressor, According to Science

Buying an air compressor, for the first time, can be challenging in many ways. There is a lot going on behind this power tool that offers faster and more efficient performance. Before we get to know about the details of an air compressor then, let’s understand how it works. How do air compressors work?

Applications | 10.12.2018

8 Ways to Identify and Eliminate Noise Hazards in the Workplace

Occupational noise hazards are one of the most common workplace safety concerns. Our hearing is sensitive and it does not take much to temporarily impair or permanently damage it. 

HSE | 10.12.2018

Bacterial Bandages, Natural Dyes and Recycled Fibres: Aalto Brings Materials Revolution to Slush

New materials play an important role in sustainable development and combatting climate change. New uses for old materials can also be a major industrial opportunity: for example, the value of biomass from forests in Finland can be doubled if used for manufacturing products of higher added value.

R&D | 4.12.2018

Maintenance: A Necessary and Important Function in the Future

Euromaintenance 2016 will take place in Athens at the end of May. It is the ideal moment to reflect on maintenance in a European context. Euromaintenance is known as the summit for all involved in maintenance across Europe, it’s the place to be. The conference, with the support of the EFNMS, is the only commercially independent conference covering the topics we deal with in the maintenance world.

EFNMS | 20.5.2016