Inadequate wastewater treatment poses a threat to utility assets, public health, and the environment. And, it puts municipalities and businesses at risk of legal liability and substantial fines.
There is no single approach to treatment. Local regulations and the specific wastewater contaminants in each area demand tailored solutions to best maintain public safety, ensure compliance with pollution control requirements, and achieve sustainability goals. Ranked among the nation’s top design firms for wastewater treatment plants (WWTP) by Engineering News-Record (ENR), we help clients solve their treatment challenges through a holistic approach that combines innovation, practical design, green initiatives, and a century of experience.
Backed by a robust portfolio of wastewater process experience and a reputation for forward-thinking design, we’re driven to ensure your treatment investments provide the greatest return for you and your stakeholders. We’ve planned, designed, and managed construction for WWTPs with capacities ranging from .01 to 370 MGD. As well, we help you upgrade, rehabilitate, and expand your existing facilities to meet your capacity and treatment needs.
Nutrient Reduction and Removal
We also provide advanced solutions to meet higher standards and provide maximum protection for communities. These solutions go beyond conventional biological processes that meet secondary treatment requirements.
To remove nitrogen, ammonia, suspended solids, and other unwanted constituents at totals greater than conventional treatment, we employ:
- Biological denitrification.
Gannett Fleming often delivers nutrient reduction far beyond what is required by state and federal regulations. We enable our clients to meet increasingly stringent nutrient-removal goals through our experience in:
- Biological oxidation.
- Adsorption using activated carbon.
- Nutrient removal using the Bardenpho process.
- Other leading-edge innovations.
Advanced Filtration, Recycling, and Reuse
Many communities are facing a growing demand for potable water and the need to replenish depleted groundwater supplies. Therefore, they are turning to advanced filtration.
Some communities are substituting nonpotable water reuse to reduce the demands on precious potable water supplies. Physical separation methods such as microfiltration, ultrafiltration, and reverse osmosis use man-made membranes. These membranes operate on an atomic level to provide the highest degree of wastewater treatment. Processes such as chemical oxidation, ozonation, ultraviolet disinfection, and advanced oxidation are coupled with advanced filtration to achieve disinfection.
Our experience designing advanced purification processes enables us to deliver leading-edge treatment to help our clients create millions of gallons of nonpotable water for beneficial reuse, or potable water for groundwater replenishment.
Waste to Energy
Most commonly, wastewater treatment plants with anaerobic digesters use small amounts of methane byproduct to help power their boilers and heat their digesters. However, the balance flares off unused. But as utilities and municipalities seek ways to reduce their costs and meet renewable energy requirements, cogeneration can be a viable option.
Clients with ambitious operational or financial efficiency goals look to Gannett Fleming’s cogeneration experts to harness the value of energy in their wastewater. We flip on its head the traditional view of waste as a liability. Instead, we consider such material a potential resource — one that can help you create a sustainable, self-sufficient community and ease the financial burden on ratepayers by:
- Removing the need to purchase fuel.
- Reducing air pollutants.
- Producing energy at a rate below utility grid power.
- Improving the reliability of power at your plant.
Wastewater Treatment Solutions Include:
- Advanced water treatment.
- Alternatives evaluation.
- Biological nutrient reduction & removal.
- Biosolids & residual management.
- Capital expenditure & operating expenditure (CAPEX & OPEX) evaluation.
- Characterization analysis.
- Condition assessment.
- Energy auditing.
- Instrumentation & controls.
- Master planning.
- Mechanistic modeling.
- Membrane bioreactors.
- National Pollutant Discharge Elimination System (NPDES) compliance.
- Odor control.
- Operations management.
- Preliminary design.
- Process evaluation & design.
- Resiliency & storm hardening.
- Sustainable buildings.
- Toxics control.
- Value engineering.
- Wastewater treatability analysis.