RO Concentrate Evaporation

Waste Management’s Atlantic Landfill RO Concentrate Evaporation Project Short Listed for 2022 GWI Industrial Project of the Year

 This project utilizes Dynatec’s MBR and RO. The reject from the RO is evaporated using waste heat from the on-site power generation. It is a great project overall and this is a cost effective and sustainable approach to handling RO reject.

 WAVERLY, VA – WM’s 120,000GPD leachate evaporation project, developed in partnership with Heartland Water Technology, was shortlisted for the Global Water Intelligence’s 2022 Industrial Project of the year. A 120,000GPD (450m3/d) evaporation solution for reverse osmosis (RO) concentrate at the Waverly landfill site in Virginia, US., this project addresses the challenges of RO concentrate waste stream treatment and disposal.


Reverse Osmosis

Juice Plant

Reuse water ability in a new treatment system was needed in a juice processing company for other plant processes. The high strength wastewater, with a COD of 16,000mg/L, needed to meet stringent effluent criteria to make this possible.

Reuse Water

The solution, provided by Dynatec, includes a membrane bioreactor (MBR) followed by a double pass reverse osmosis (RO) system. The permeate meets all limits for BOD, COD, metals, TSS, and TDS.

For more information, please contact us today.



MBR RO for Reuse

MBR RO for reuse, A domestic manufacturer of personal protective equipment is undergoing a major plant expansion. The company now needs to treat their wastewater for reuse as they discharge to a small POTW that could not handle the new volumes or contaminant loading. The new wastewater treatment plant is being built in stages. The first system is a relatively small MBR to handle the first phase of their expanded production. The second system is designed to handle their full-scale production, which will only be several months after the first phase is completed. This system includes an EQ tank, MBR with pre and post anoxic tanks and tubular UF, and RO. The system is designed so that all the RO permeate can be reused while the RO reject can be discharged to the local POTW. One of the goals of the MBR is to reduce nitrates from a high initial concentration to very low levels so that the RO reject will meet that total nitrogen limits for discharge to the POTW. The plant is designed so that future expansion is easily achieved. MBR RO for Reuse


Contaminants Removed



Small Footprint



Reduced water costs

FOG Sustainability

High quality reuse water

For more information about wastewater reuse, contact us today.


Sanitary Wastewater Expansion

Sanitary wastewater expansion of a previously supplied MBR by Dynatec Systems for a mall was recently completed. The original system treated the sanitary wastewater generated at the mall and wastewater from several restaurants on the property. Recent changes at the mall, including the addition of residential units, resulted in greater wastewater volumes. The expansion was relatively fast and easy due to the modular nature of Dynatec’s UF skids. The permeate meets all requirements for direct discharge to the environment and the compact design fits the limited space available at the mall.

Sanitary Wastewater expansionSanitary wastewater expansion








For more information on sanitary wastewater expansion, please contact Dynatec to discuss.

Wastewater reuse

Wastewater reuse is achieved at an automotive plant. Wastewater reuse Wastewater equipment to treat both sanitary and production wastewater that included oily waste was designed and installed in a new transmission manufacturing facility.  The goal was to treat and purify water for reuse.

Dynatec met these demands by providing a membrane bioreactor (MBR) followed by a reverse osmosis (RO) system.  The MBR reduced BOD, TSS, and oil and grease to non-detect levels.  The RO is used to polish the MBR effluent so that it is suitable for reuse. It is reused in cleaning operations, cooling tower, and all production applications.

80%-90% of the wastewater is purified for reuse.  Additional industrial park wastewater (after primary clarification at the industrial park) is introduced to the system for treatment and purification.  The system is designed to receive 300,000gpd and purify 250,000gpd for reuse.

This novel approach greatly reduced the total amount of wastewater discharged by this plant.  It provided the water needed for production using a comprehensive system that Dynatec designed, supplied and installed.

Ultrafiltration (UF), Membrane Bioreactor (MBR), Nanofiltration (NF) and Reverse Osmosis (RO) are employed by Dynatec for these wastewater projects. Wastewater recovery and reuse has been successfully implemented with industrial and sanitary wastewater streams for:

  • Cooling tower make up
  • Boiler feed
  • Irrigation
  • Toilet flushing
  • Direct potable reuse
  • Cleaning/wash applications
  • Rinse processes
  • Painting processes
  • Other plant processes

For more information on wastewater reuse, please contact us today.

Wastewater reuse

Wastewater reuse










Landfill Leachate Treatment System

A landfill which produces 200,000gpd of leachate needed a new treatment system to be able to discharge to surface water. Dynatec provided a Membrane Bioreactor (MBR) that utilized an existing tank as the bioreactor. A Reverse Osmosis (RO) system was also provided to further purify the MBR permeate prior to discharge. Repurposing existing assets saved the customer significant costs. The MBR conversion was the easiest and most cost-effective method to achieve their treatment goals.

Landfill leachate treatment systems with Membrane Bioreactors (MBR)s have developed many unique process improvements for industrial wastewater applications. Dynatec successfully uses Ultrafiltration (UF), MBR and Reverse Osmosis (RO) for landfill leachate applications.

Landfill leachate treatment requirements

Treatment can vary, depending on the discharge requirements, and the contaminants present

Landfill leachate is characterized by:landfill leachate treatment

  • High Total Dissolved Solids (TDS)
  • Heavy metals
  • High BOD
  • Color
  • High COD
  • High ammonia

Landfill leachate treatment systems options

The MBR option: an aerated biological mixed liquor process operating at very high solids concentrations. 

The advantages are:

  • Long sludge age produces a well acclimated biomass. High concentration (typically 12,000 to 20,000 mg/l) provides very high rates of reaction
  • Excellent nitrification and de-nitrification
  • Smaller footprint then conventional aerated systems
  • High-quality effluent as a result of using membranes for final clarification
  • Lower sludge production than conventional systems


For more information on landfill leachate treatment systems, please contact Dynatec.

Landfill Leachate Treatment System


Chemical Manufacturer

Chemical manufacturer needed a wastewater treatment plant capable of producing high-quality permeate from raw wastewater.   They had high concentrations of oil and grease, Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD), and Chemical Oxygen Demand (COD). Dynatec designed and manufactured a system including an Ultrafilter (UF) to removed Oil & Grease (O&G) and TSS.  An MBR to further treat BOD and COD. The permeate is free of O&G, TSS, and BOD, while COD is greatly reduced. The system was designed so future expansion is easily achieved.

Chemical ManufacturerChemical Manufacturer






Ultrafilter for Metals Removal

A metallurgy facility needed to remove metals from their wastewater. Bench scale treatability work performed by Dynatec proved the effectiveness of the UF system.  The UF system removed chromium, copper, zinc, nickel, and other metals to low parts per billion levels needed for surface water discharge.

The company produces ferrous metals (atomized steel and sponge iron) for use by auto parts makers and other manufacturers.  The steel and iron powders are used to make structural parts, filters, and bearings, as well as, in friction applications such as brake pads and linings. 

Dynatec has hundreds of installations in similar applications.

Please reach out if you have any metals removal projects that we can help with.

Brewery Reuse System


Brewery reuse system  for a brewery consists of a Membrane Bioreactor (MBR) and Reverse Osmosis (RO) system.  The brewery produces high strength wastewater with COD > 8,000mg/L.  An anaerobic digester ahead of the MBR, produces gas for heat and power generation. The wastewater then goes to the MBR and RO producing high-quality water that is suitable for reuse in brewery operations. The RO reject is combined with a portion of the MBR permeate to manage total TDS concentrations so it can be discharged to the sewer.

Anaerobic digester and aerobic MBR followed by RO for whiskey manufacturer.

Anaerobic digester and aerobic MBR followed by RO provided by Dynatec Systems.  A whiskey manufacturer needed a wastewater treatment system to reduce very high organic content BOD and COD.  As well as, solids content TSS of the wastewater stillage to achieve the demanding final treated water discharge standards.  A membrane filter is used for pretreatment prior to the anaerobic system.  The tubular membrane filter employed with the biological system is not dependent on the settling characteristics and produces very high-quality effluent.

The equipment was containerized to make the implementation as easy as possible.

MBR Package Plant

For more information on anaerobic digester and aerobic membrane bioreactor followed by reverse osmosis, please contact us today.

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