Dispersal model for wastewater - Development and evaluation of the MALMAK model

In this report the development of a model for simulation of waste water or cooling water dispersal is presented. The model, called MALMAK, is designed to provide information suitable for environmental impact assessments of the initial spreading of plumes around point sources. It works well with the limited information typically available for assessments of discharges to water recipients and does not require detailed monitoring of ambient conditions. The model development described in this report includes an algorithm for predicting the plume width from the momentum of ambient and effluent water, a new model interface and an inbuilt graphic module enabling simulation results to be directly represented in a digital map. The model has also been validated against empirical data and against a more complex hydrodynamic model and was found to give reasonable estimates of effluent concentrations in aquatic environments.

Subscribe to our newsletter

Last updated: 2021-05-05

IVL Swedish Environmental Research Institute

About IVL

IVL Swedish Environmental Research Institute has a wide environmental profile. We combine applied research and development with close collaboration between industry and the public sphere. Our consultancy is evidence-based, and our research is characterized by interdisciplinary science and system thinking.


Ikon med telefon

+46 (0)10-788 65 00

Social media

Ikon med LikedIn
Ikon med twitter
Ikon med facebook


© 2023 IVL Svenska Miljöinstitutet AB | About Cookies | How we process personal data

Ikon med kryss
To top