Dissolved Air Flotation Unit

In addition to our skid mounted Dissolved Air Flotation system Watermark Projects has the in-house capability to design and manufacture bespoke DAF systems to suit both discharge and site specific requirements. 

WMP Bespoke DAF delivery


Like all of our DAF models, we are able to transport our systems from our site to yours. All of our DAF units are delivered on a HIAB and come complete with other peripheral equipment such as feed pumps, a magnetic flow meter and level sensors to name a few.

Take a look at this recent installation we fulfilled for one of our clients:


Unlike our skid mounted range, the Bespoke DAFs do not come with a set footprint. The dimensions will depend on your flow rate. From this figure we can tailor the measurements to your requirements.

Choosing your wastewater flow rate from between 2,000 and 200,000 litres per hour will allow us to determine your best fit.

WMP Bespoke DAF
WMP Mixing tank


Our Bespoke DAFs include:

  • Float switches / level sensors
  • On-board mixing vessels
  • Automated air dissolving vessel
  • Chain driven scraper blade 
  • Baffle & weir plating

As Watermark Projects is part of a larger Engineering group and has an in-house design team we are able to offer completely bespoke systems which can incorporate other pre-treatment or screening systems as well as allowing us to accommodate sites with restricted space and existing treatment systems.



Speak to a member of the Watermark Projects team. Discuss your current requirements, any future projects you might be planning or even to get advice on consent breaches, billing or planning.


With every new customer we think the best first step is a site visit from one of our project engineers. This allows us to meet you face-to-face and start a good working relationship, get a feel for the site itself and take a sample of your wastewater for analysis.


Every site is different. The wastewater is different, the consent is different and therefore the solution will be different. This is why we'll undertake a lab analysis of your wastewater to identify the most effective treatment solution for your waste.

This analysis also allows us to determine achievable removal rates with contaminants such as COD, TSS and FOG as well as pH correction.


Thanks to the previous key steps, we're now in a position to provide a proposal to for a suitable, cost effective and efficient solution for your site. Proposals can range from a complete new system through to modifications to the existing plant for optimisation.

While we manufacture the vast majority of our systems in-house, proposals can also include 3rd party supplied parts such as the balance & sludge holding tanks as well as potential tertiary systems.