Technical Expertise

Multidisciplinary teams comprising of specialists across ten industry sectors, we have the expertise necessary to grapple with challenging assignments.

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Commitment to Clients

Our business is built on relationships, and our clients will always be our top priority.

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Featured Project

Silvertown Tunnel London UK

Silvertown Tunnel
One of the largest engineering projects in the world.

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Who We Are

International Award-Winning Engineering Consultants who deliver ground breaking solutions at the forefront of industry best practice.

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Our Regions

Carbon Reduction Plan

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Our Commitment to Net Zero
Ayesa is committed to becoming a net zero engineering consultancy by 2040

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Stay Up-to-date

Stay on top of the latest developments, appointments, awards and more across all our offices.

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Featured News

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On 19th October 2023, ByrneLooby will rebrand to Ayesa

ByrneLooby will officially adopt the name of its parent company, Ayesa, a global engineering and technology services provider.

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Investing In Our People

Cultivating a culture in which individual differences and the contributions of our staff are recognised and valued.

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Our EDI Policy

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Celebrating People
Fostering a culture where you are encouraged to be yourself.

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International Presence

Multidisciplinary team comprising of specialists across Ireland, UK and the Middle East.

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Deep Expertise in Organic Waste and Sludge Treatment

In 2018, The World Health Organisation stated that "every dollar invested in sanitation will bring a six-fold return in lower health costs, increased productivity and fewer premature deaths."  With this in mind and the introduction of several E.U. directives, the importance of cost-effective sanitation has never been higher. Ayesa has delivered wastewater treatment, storage, and conveyancing projects in Ireland, the U.K., and the Middle East. Our proven track record has helped government agencies, municipalities, utility companies and contractors develop and manage wastewater networks and treatment plants.  Ayesa currently sits on the framework for Irish Water, the national utility provider for Ireland. We provide detailed engineering services from concept through to commissioning, with expertise in whole-life costing and sustainable and energy-efficient design.  Our consulting services ranging from green/brownfield development of wastewater assets through concept design, retrofitting and process refinement. 

Our wastewater experts consult on the following:

  • Process selection and design
  • Wastewater treatment and optimisation
  • Wastewater pumping stations and conveyance
  • Wastewater Storage Design
  • Discharge licensing

We develop robust solutions that address existing and future challenges such as seasonal variance and headroom, tightening environmental restraints and specific industrial treatment requirements.  Some key projects for our water team include the Blanchardstown Regional Drainage Scheme, which serves a population equivalent of 150,000, the Arklow Wastewater Treatment Plant, that will provide treatment capacity of 24,000PE with potential to expand to 36,000 PE.  We are also providing process and civil design for a 37,000m3/d Industrial Wastewater Treatment Plant at the Jazan Industrial City development in Saudi Arabia, an economic city, based on the philosophy of symbiotic development in the Red Sea.  

Expertise In-Depth:

• Assimilative capacity assessment
• Catchment assessment and network modelling
• Construction management
• Contract Administration
• Dispersal modelling and long sea outfall design
• FEED reports
• Flocculation, sedimentation
• Hydraulic modelling and flow balancing
• Industrial process design - heavy metal recovery, metal precipitation, coagulation,
• Industrial wastewater treatment analysis and process selection
• Micro-tunnelling design
• control
• Pipeline designs
• Pipeline route selection and route proving
• Pressure optimisation and pumping analysis
• Primary, secondary and tertiary process designs
• Process optimisation
• Process selection and design
• Pumping station design
• SCADA, control and alarms/electrical/mechanical rotary and static/process/hydraulic/
• Septicity control
• Sewer network design
• Sludge treatment & recycling
• Storage assessment and design
• Storage, treatment, and disposal of sludge
• STP and IWT operating and maintenance
• Tender/contract documentation
• Treatment Plant, abstraction source and transfer pumping station
• TSE reuse
• Value engineering
• Wastewater collection and treatment


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