The Netherlands: New Computer Model Improves Water Quality Assessment

Water managers can now make a more accurate assessment of whether they are complying with the standard for heavy metals in surface water with the new computer model developed by Deltares: PNEC.pro.

This model takes the local water chemistry into account, making it possible to calculate local standards for permitted concentrations of heavy metals and precluding the need to implement the generic standard from the Water Framework Directive (WFD), which is usually conservative.

The model is based on the research conducted by Anja Verschoor for Deltares as part of her doctoral thesis ‘The power of biotic ligand models: Site-specific impact of metals on aquatic communities’. Her doctoral award ceremony will be on 4 December at Leiden University.

Model targets zinc, copper and nickel

PNEC.pro looks at concentrations of zinc, copper and nickel because these metals often exceed the permitted levels set by the Water Framework Directive (WFD).

Jos Vink, a researcher with Deltares who is closely involved with the development of the new model: ‘The exceedances are caused by the fact that the WFD standard often fails to take location-specific conditions into account, such as acidity or the presence of organic compounds or calcium. These factors affect the impact that heavy metals such as zinc, copper and nickel have on aquatic flora and fauna. PNEC.pro does take specific conditions into account, making it possible to calculate the right permitted level in a specific location. The WFD allows more refined standards but a practically applicable model has not been available until now.’

PNEC.pro available free of charge

The new model was developed and tested on the basis of field trials with the De Dommel water authority, where people were very enthusiastic. PNEC.pro is available from Deltares free of charge. It can be downloaded from www.pnec-pro.com, which also provides more background information about the model and the issues it addresses.

Press Release, November 28, 2013

 

Share this article

Follow Dredging Today

One thought on “The Netherlands: New Computer Model Improves Water Quality Assessment”

Comments are closed.

Events>

<< Dec 2019 >>
MTWTFSS
25 26 27 28 29 30 1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31 1 2 3 4 5

3rd International Congress Hydraulic Engineering Structures and Dredging

Russia’s leading maritime industry Media Group PortNews (www.portnews.ru) holds a traditional annual Congress “Hydraulic Engineering Structures and Dredging” in Moscow. 

The two-day Congress includes the 7th International Forum of Dredging Companies and the 3rd Technical Conference “Modern Solutions for Hydraulic Engineering”.

Infrastructure development is among the real sources of Russia’s economy growth. Construction of port facilities and new hydraulic engineering structures on the country’s inland waterways constitute an essential part of all infrastructure projects. It is important to take into account the best international practices to implement these projects effectively.

The program of the Congress will be devoted to the latest technologies for dredging and hydraulic engineering works. Speakers and delegates will refer to real projects to discuss specifics features of dredging works, as well as dedicated fleet and equipment involved.

To learn more about event, please, contact the organizing committee: snitko@portnews.ru

read more >

Jobs>

Looking to fill a job opening?

By advertising your job here, on the homepage of DredgingToday.com, you'll reach countless professionals in the sector. For more information, click below....

apply

Dredging jobs in Abu Dhabi at NMDC

National Marine Dredging Company “NMDC” aims to be the largest dredging player in the Arab’s Gulf region...

apply

Looking to fill a job opening?

By advertising your job here, on the homepage of DredgingToday.com, you'll reach countless professionals in the sector. For more information, click below...

apply