Solutions to Global Challenges

Improve wastewater treatment efficiency

Optimise processes, reclamation, energy and chemical usage to reduce costs, human errors and environmental impact

The issue

Wastewater treatment and reclamation plants (WWTPs and WRPs) are key infrastructures for ensuring a proper protection of our environment. However, they consume large amounts of energy and chemicals, produce high greenhouse gas emissions including methane, nitrous oxide and carbon dioxide and insufficiently remove emerging contaminants such as antibiotics and microplastics. In addition to growing environmental concerns, these facilities are aging, making them increasingly expensive to operate and face difficulties in retaining skilled staff.

Why it matters

To address rapid urbanisation and climate change, comply with environmental regulations and minimise public health risks, it’s important to efficiently treat and reuse wastewater and recover the valuable resources it contains. Water from WRPs can be used for irrigation, industrial processing, groundwater recharge and drinking water in the form of (in)direct potable reuse. Efficient operation reduces costs, the impact of a WWTP on receiving environments and its CO2 footprint and may enable the postponement of upgrades or building new plants.

How we can help

A cost-effective way to begin this process is to analyse existing conditions and conduct a performance and energy audit. DHI can help clients discover ways to increase capacity, reduce effluent concentrations, become an energy producer rather than consumer and recover valuable and scarce resources, leading the transition to Water Resource Recovery Facilities (WRRFs). DHI can also guide clients in establishing automated data driven operations to minimise human error risks and ensure regulatory compliance. 

Integrated solutions

Through the integration of advanced technology and decades of wastewater treatment analysis and modelling expertise, DHI offers solutions to help increase treatment capacity while reducing energy and chemical consumption. DHI collaborates with consultants and utilities in an effort to provide a customised solution that fits a client’s unique process configuration and objectives.

Improve water efficiency with sustainable process design and retrofitting

DHI's municipal and industrial wastewater treatment solutions and water audits improve efficiency. A detailed plant layout based on the quantity and quality of anticipated inflow and required effluent quality can be formulated to support design. Clients can convert traditional BOD removal to nutrient removal designs or increase capacity with existing plant infrastructure through implementation of new technologies like granular activated sludge, anammox, Bio-P, bioaugmentation and carbon harvesting for energy recovery.



Technology

WEST | Innovative Biological Treatment Technologies

Make more informed decisions using data integration

Having accurate information on a WWTP system is foundational knowledge to begin optimising a treatment system. Clients can make more informed decisions by combining data from SCADA, LIMS, weather stations, manual inputs, and model output using customised Data Management Systems. In addition, the data validation methods help ensures only accurate and relevant data is used for operational decisions. DHI’s technology also provides automated reporting on environmental monitoring, process monitoring, power and chemical usage.

Technology
WEST | DIMS.CORE

Achieve more stable plant operations through the use of advanced real-time control

DHI offers solutions for step-wise implementation of real-time control and process automation. DHI collaborates with utilities and consultants to develop feedback, feedforward and model-predictive controllers for WWTP optimisation. WWTP and collection system data can be coupled to provide real-time operational support. In addition, DHI's DIMS.CORE platform supports the implementation of Digital Twins which can be used for setpoint control and process performance monitoring.



Technology

WEST | DIMS.CORE | MIKE OPERATIONS

"We chose WEST for its extensive and transparent model library and its high flexibility for developing customised models. These features allowed us to simulate complex control strategies and reproduce the real behaviour of our controller, and thus to optimise thresholds and set-points and to validate the benefits of different operating strategies."

- Marco Vian, PhD—Environmental Engineer—ETC Sustainable Solutions

Client success stories

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"The process optimisation has fully met our expectations. In spite of fluctuating loads, we now see more stable operation with better effluent quality and reduced energy consumption."

- Flemming Husum, Plant Manager, Marselisborg Wastewater Treatment, Plant -Aarhus Water

Blog post

One tip for an efficient wastewater treatment plant: Go digital

Today, there are 16,000 municipal wastewater treatment plants (WWTPs) in the US with an additional 18,000 in Europe. When you factor in the number of WWTPs in mature countries such as Australia, New Zealand, Canada, Japan and China, the estimated number of wastewater treatment plants worldwide is more than 50,000! Many of these treatment plants have the potential to significantly optimise their wastewater operations, increase efficiency and reduce costs – all with the help of digital solutions.

Read more
Optimisations-of-WWTPs

Featured training

FREE WEBINAR

Optimisation of wastewater treatment plants

During this free 1-hour webinar, you will discover solutions to best address wastewater treatment challenges such as how to increase treatment capacity, reduce the consumption of energy and chemicals and improve overall efficiency through a powerful combination of best-in-class technology and time-tested methodologies.

15 Apr 2020 | 8:00 & 15:00 UTC | Register

ONLINE COURSE

Modelling and simulation of wastewater treatment plants with WEST

Register for this modular, online course to gain a comprehensive understanding of how WEST can be used to solve a multitude of challenges related to WWTP design, operation and optimisation. We’ll introduce you to the main features of WEST including how to implement and simulate a virtual WWTP model. Upon course completion, you’ll be able to understand and reproduce the operation of a real WWTP, evaluate and even optimise its performance in terms of treatment, energy and cost efficiency.

Course begins on 6 May 2020 | Register

Ask a question

Request a quote or more information

DHI is here to provide you with more information, answer any questions you may have, and discuss the best services and technological solutions to help you tackle your wastewater treatment challenges.

DHI are the first people you should call when you have a tough challenge to solve in a water environment – be it a river, a reservoir, an ocean, a coastline, within a city or a factory. Our knowledge of water environments is second-to-none. It represents more than 50 years of dedicated research and real-life experience from more than 140 countries. We strive to make this knowledge globally accessible to clients and partners by channelling it through our local teams and unique software. Our world is water. So whether you need to save water, share it fairly, improve its quality, quantify its impact or manage its flow, we can help. Our knowledge, combined with our team’s expertise and the power of our technology, holds the key to unlocking the right solution.