Engineering & Design Services

Wastewater Treatment

MWH scientists and engineers have designed wastewater treatment facilities ranging in size from 0.25 million gallons per day (mgd) to more than 800 mgd. Our experience encompasses sewer collection systems, advanced wastewater treatment facilities, residuals management and handling, odor control and air pollution and water reuse. We have significant expertise in all facets of wastewater liquid stream and solids stream treatment ranging from conventional plants for organic removals to complex nutrient removal/resource recovery processes covering scopes from compliance evaluations to turnkey delivery of completely operational facilities. We have also performed numerous wastewater treatment plant upgrades to meet Title 22 reclamation requirements.

Regulatory Requirements, Planning and Permitting

Through effective and efficient project planning, MWH experts provide comprehensive services and expertise in regulatory requirements, planning and permitting to ensure project success, with services including:

Wastewater and biosolids system master planning
Local, state and federal regulatory compliance strategy
Economic and rate studies
Public outreach

Treatment Technologies

As one of the leading wastewater treatment companies, we are at the forefront in the application of treatment technologies, including:

Preliminary treatment
Primary and secondary treatment
Tertiary treatment/disinfection
Treatment technology
Biological nutrient removal (BNR)
Real time control
Advanced biosolids treatment
Resource recovery
Energy generation

Preliminary and Detailed Wastewater Treatment Design

Our multi-disciplinary design team blends expertise and proven reputation for innovative, quality wastewater treatment facility design projects, including:

Process engineering and design for liquid and solids treatment systems
Treatment system design support (Preliminary Engineering Reports)
Civil, electrical, mechanical, chemical, instrumentation and control, geotechnical, structural, architectural engineering and design, technical specifications
Technical, economic and financial feasibility studies
Treatment process modeling and simulation software studies
Bench-, pilot- and demonstration-scale studies
Existing wastewater treatment plant upgrades
QA/QC & value engineering

Process Modeling

Using state-of-the-art process models, we provide optimized solutions to address a wide range of issues, including:

Biological treatment
Chemical addition systems
Wet weather treatment
Odor source and dispersion
Computational fluid dynamics
Data inventory, analysis and management
Energy management
Resource recovery
Carbon inventory and emissions

Operations

MWH expertise runs the full lifecycle of a project, including partnering with our clients to determine best practices for operations, including:

Plant operations and optimization
Operator training
Process start-up and commissioning
Equipment analysis and evaluation
Best treatment practices