Water and Wastewater Treatment

Freese and Nichols provides services in Water Purification and Resource Recovery – also known as Water/Wastewater Treatment – for municipal, state and federal clients across the southeast United States. We regularly serve as program manager or design consultant for water and wastewater treatment projects resulting in multi-billions of gallons per day in total treatment capacity for our clients. We lead planning studies and plant designs, as well as provide construction phase and startup/commissioning services for advanced water, wastewater and water reuse treatment systems.

Our practice is built on a legacy dating to 1894, when treatment was one of the original services offered by our firm’s founder, Maj. John Hawley. Today, our nationally recognized experts offer broad experience in process innovation and design for water and wastewater treatment, with a commitment to quality and client service.

A partial list of our treatment service offerings is provided below.

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Specific Services

Water Purification (Water Treatment)
  • Indirect/direct potable reuse for water supply augmentation
  • Brackish groundwater and seawater desalination
  • Conventional groundwater treatment
  • Conventional and advanced surface water treatment
  • Energy use optimization for membrane systems
  • Membrane filtration
  • Chlorine, chloramine, ozone and UV disinfection
  • Chemical optimization
  • Disinfection byproduct control
  • Distribution system water quality
  • Lead and copper rule compliance
  • Enhanced coagulation and sedimentation
  • Chemical feed and scrubbers
  • Softening, lime addition and recarbonation
  • Taste and odor control
  • Water supply and source water protection
  • PFAS treatment
Resource Recovery (Wastewater Treatment)
  • Water reclamation and reuse
  • Conventional activated sludge and high rate activated sludge systems
  • Integrated film-activated sludge (IFAS), moving bed biofilm reactors (MBBR) and membrane aerated bioreactors (MABR)
  • Biological and chemical phosphorus removal
  • Ammonia nitrification
  • Total nitrogen removal
  • Headworks, coarse and fine screening, and grit removal
  • Wastewater pumping systems
  • Primary clarification and high-rate primary treatment
  • Chemically enhanced primary treatment
  • Secondary clarification
  • Cloth media and conventional filtration
  • Chlorine, UV and hypochlorite disinfection
  • Anaerobic treatment and digestion
  • Aerobic digestion
  • Biosolids dewatering and drying
  • Class A biosolids treatment
  • Energy conservation and recovery
  • Biosolids regulations and residuals management
  • Industrial pretreatment and technically based local limits
  • Peak flow management, storage and treatment
  • Plant upratings
  • PFAS treatment

Project Gallery

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Catawba River Water Pollution Control Facility

City of Morganton, North Carolina

Expansion of the Auger Water Treatment Plant to 12 MG

City of Midlothian, Texas

Holly Water Treatment Plant Expansion

City of Fort Worth, Texas

Lick Creek Wastewater Treatment Plant Expansion

Lick Creek Wastewater Treatment Plant Capacity Expansion

City of College Station, Texas

Main Wastewater Treatment Plant

City of Port Arthur, Texas

Martinez IV WWTP

Martinez IV WWTP and Wastewater Collection System

San Antonio River Authority, Texas

Wastewater Treatment Plant Expansion

City of Cleburne, Texas

Water Treatment Plant Disinfection Byproducts Reduction Improvements

Somervell County Water District, Texas

North Water Treatment Plant Improvements Project No. 3 and South Water Treatment Plant Uprating Improvements

City of Lubbock, Texas

Central Wastewater Treatment Plant Expansion

City of Pflugerville, Texas

Allison Wastewater Treatment Plant Nitrification Study

City of Corpus Christi, Texas

Village Creek Water Reclamation Facility Thickening Study and Modifications

City of Fort Worth, Texas

Phase 1C Water Treatment Plant Expansion and Zebra Mussel Control

Brushy Creek Regional Utility Authority, Texas

Wylie Water Treatment Plant Risk-Based Renewal CIP

North Texas Municipal Water District