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 ultrafilter (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.
Ultrafilter for metals removal
Ultrafilter for metals removal can be achieved by chemical precipitation simply using hydroxide or sulfide precipitation. However, complexed metals have other chemistries available to cause precipitation to occur, typically in a simple one-step operation. There is no need to enlarge or flocculate the precipitated crystals, as is typical in conventional chemical systems since the pore structure of the membrane will retain the small precipitated crystals.
When oils are or may be present in the waste stream, the positive filtration provided by ultrafiltration prevents upsets that can occur with settlement or flotation devices. The membrane prevents passage of both oils and solids, including the precipitated heavy metals from passing, creating a concentrate of the metals.
If the waste stream consists principally of oils, a concentrate of the oils that will also contain the heavy metals is created that can be disposed of to oil recyclers. When the same type of waste is treated using DAF or clarifier technology, a sludge is created that can only be disposed to a landfill, and the benefit of reuse is lost and disposal is more expensive.
When the waste stream consists mostly of metals and suspended solids, the addition of a precipitant allows the waste to be simply ultrafiltered. The amount of sludge created is much less than the amount created using other technologies.
Dynatec’s design of ultrafiltration systems for heavy metals separation utilizes tubular membranes operated at high flow velocities. This design allows for high concentrations of metals and/or oils, and/or suspended solids in solution while minimizing cleaning maintenance of the membrane system.
Dynatec has provided systems for:
- Heavy metals removal
- Precious metals removal and recovery
- Complex wastewater streams
Ultrafilter for Metals Removal Solutions
- Ultrafiltration (UF) for metals removal
- Heavy Metals
- Metals in wastewater with oils and grease
- Precious Metals
- Metals in wastewater with chelating agents
- Ultrafiltration (UF) for reuse
- Reverse Osmosis (RO) for high purity water reuse
- Complete turnkey system solutions
- Filtration for sewer discharge of direct discharge to environment
Dynatec has designed and provided systems for reuse for:
- Wash water
- Rinse water
- Plant processes
- Cooling tower
- Boiler feed
Contaminants Removed
- Oil and Grease
- Heavy Metals
- Precious Metals
- Lubricants
- Surfactants
- Acids
- Biochemical Oxygen Demand (BOD)
- Chemical Oxygen Demand (COD)
- Suspended Solids
- Dissolved Solids
Please reach out if you have any metals removal projects that we can help with.
https://www.dynatecsystems.com/technologies/membrane-technologies/ultrafiltration-systems/
Reuse Water in 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 in juice plant
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.
Reuse water systems have been provided by Dynatec Systems to many industries. The ability to recover and reuse water has many benefits.
- Saving on water costs
- Saving on wastewater disposal charges
- Decreased environmental impact
- Protection from regulatory changes
- Decrease dependence on water provider/source
- Ability to expand without affecting water demand
- Overcome water scarcity issues
- Consistently high-quality for water reuse
Ultrafiltration (UF), Membrane Bioreactor (MBR), Nanofiltration (NF) and Reverse Osmosis (RO) are employed by Dynatec for water reuse projects. Water recovery and water 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
Reuse water systems provided by Dynatec Systems:
- Resorts, hotels, and retirement homes
- Golf courses
- Automotive companies
- Food and beverage companies
- Apartment buildings
- Landfills
- Mines
- Metal finishing plants
- Aerospace companies
For more information, please contact us today.
https://www.dynatecsystems.com/technologies/recovery-and-reuse/
Biogas
Maximize Your Biogas Potential with Dynatec UF Systems
Efficient, Sustainable, and Profitable Wastewater Management
Harness the power of anaerobic digestion with Dynatec’s proven ultrafiltration (UF) systems, engineered to enhance the efficiency and profitability of biogas facilities and renewable natural gas (RNG) production. Our UF systems are designed to optimize the entire wastewater treatment process, from AnMBR (Anaerobic Membrane Bioreactors) to nutrient recovery and water reuse, ensuring your operation meets stringent environmental standards while maximizing resource recovery.
Why Choose Dynatec UF for Your Biogas Facility?
✓ High-Performance AnMBR Technology – Dynatec UF systems are the heart of anaerobic MBR processes, creating a robust separation system that allows for high-rate digestion, increased biogas production, reduced footprint, and higher quality effluent.
✓ Maximized Biogas Production – AnMBR technology enables higher volatile solids reduction, improved methane yields, and more consistent digester performance, translating to more RNG output and greater profitability.
✓ Nutrient Recovery and Reuse – Combine UF with reverse osmosis (RO) to capture valuable nutrients like ammonia and phosphate, creating a marketable product, reducing chemical costs, and creating high-quality, reusable water.
✓ Discharge Compliance – Dynatec MBR systems provide robust biological treatment and solids separation, producing permeate suitable for direct discharge, reducing disposal costs and environmental impact.
✓ Low Maintenance, High Durability – Built around rugged tubular UF membranes, Dynatec systems are engineered for long life, with superior resistance to fouling and chemical exposure, ensuring maximum uptime and minimal operator attention.
Applications:
- AnMBR Systems – High-efficiency digestion and biogas production
- RNG Production – Consistent, high-purity methane output
- Nutrient Recovery – UF/RO for fertilizer and water reuse
- Effluent Discharge – MBR for direct, permit-compliant discharge
Take the Next Step in Resource Recovery
Contact Dynatec today to learn how our membrane systems can optimize your biogas facility’s performance, reduce operating costs, and increase profitability.
Turnkey Solutions
Turnkey solutions provided by Dynatec include equalization tank, oil water separator, ultrafiltration (UF) process tank, UF system, and permeate and concentrate tanks. The customer, an industrial research facility, had a wastewater treatment facility that also treats the waste from several other manufacturers that occupy buildings nearby, recently purchased an UF system from Dynatec. The UF system replaced a DAF system that was not effectively handling the contaminant load from these facilities, including oily waste, heavy metals, and suspended solids due to the frequent changes in the wastewater characteristics. The customer also chose to have Dynatec install the system. The UF system has allowed them to meet their discharge requirements with less operator attention and effort.
Dynatec’s team of mechanical, chemical and electrical engineers have decades of experience to provide everything you need, from start to finish. This includes evaluation, system design, installation, system startup and training. Our focus has always been to produce the most cost-effective long-term answer for our customer. All turnkey systems are custom designed and installed for your specific needs.
Two different sets of disciplines are employed for this stage of the process. First, years of process experience produce effective process design. Our ownership and operation of treatment systems produces invaluable field experience that is translated into operator-friendly equipment. Next, the process design is translated into a complete integrated treatment systems by our experienced engineering staff.
- Single source of responsibility
- Problem evaluation
- Process and system design
- Equipment
- Installation service
- System startup
- System startup consists of a three-step process:
- The equipment is commissioned by proving each of the field instruments
- The equipment is wet-tested
- Equipment is operated on process fluid to prove operation under normal conditions
- Training by Dynatec engineers
Dynatec obtains membranes from a wide variety of suppliers, always aware of the need to produce lowest lifetime cost. Our suppliers produce membranes in a variety of materials, as well as a number of configurations for most effective solutions. In addition, Dynatec procures other equipment required to complete the project.
Dynatec manufactures modular equipment so that installation costs are kept to a minimum. Supervised by experienced competent engineers. Our usual method of operation is to hire local contractors approved by our customer.
Proven Installed Turnkey Solutions
At Dynatec, we are not just experts in providing reliable equipment for industrial applications, we also provide the proven solutions that our global clients need.
For more information on our design-build turnkey solutions for your install, please contact us today.
Landfill Leachate treatment system
Landfill leachate treatment system for a hazardous waste landfill incorporates heavy metals pretreatment followed by a tubular MBR system.
The MBR reduces:
- ammonia
- phenol
- Polychlorinated Biphenyl (PCB)
- chemical oxygen demand (COD)
- volatiles and semi-volatiles
- and other contaminants adequately for discharge
The system reduces PFAS 30-60% and carbon is utilized to reduce PFAS to low ppt concentrations.
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 system requirements
Treatment can vary, depending on the discharge requirements, and the contaminants present
Landfill leachate is characterized by:
- 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
Typical MBR results in landfills:
| Parameter | BOD | COD | TSS | Ammonia |
|---|---|---|---|---|
| Influent | 500 | 4000 | 150 | 1000 |
| Effluent | <5 | 800 | <5 | <1 |
| % Removal | >99% | 80% | >96% | >99% |
The system produces bio-sludge, which can either be dewatered for disposal, or disposed of as a liquid sludge.
Alternative landfill leachate treatment options:
- Chemical precipitation of metals before MBR treatment
- RO after MBR treatment removes organic and inorganic contaminants, and color
- UF followed by RO
The two effluent streams from a RO system are:
- Permeate
- Concentrate (or reject)
This can be re-injected into the landfill. Its long-term effects on leachate concentrations should be considered.
Conclusion
The MBR process provides the highest possible levels of organic removal with essentially zero suspended solids in the effluent. This is the ideal feed system for RO treatment.
RO permeate can be used for other non-potable purposes:
- Irrigation
- Truck washing
- Dust control
Dynatec membrane treatment systems have successfully provided outstanding performance in many landfill leachate applications. Considerations for this technology include:
- Membrane treatment offers reliable, consistent landfill leachate
- Systems are highly cost effective, and require low levels of operator interface
- The best membrane system configuration for each application should be individually evaluated
- Membrane treatment is broadly applied in the US and abroad
Contact Dynatec Systems today to discuss your landfill leachate treatment solution.
https://www.dynatecsystems.com/industries/landfill-leachate-treatment/
Decentralized Wastewater Treatment Facility
Dynatec provided the membrane system for a demonstration plant situated directly adjacent to the Anaheim, CA City Hall. The system is designed to pump wastewater from a local sewer line, treat the wastewater for reuse, and return the waste activated sludge and screenings to the sewer line.
The DynaLift™ out-of-basin membrane system was selected because:
- The high flux rates achieved by the DynaLift™ system allowed for a small footprint
- High MLSS concentrations allows for smaller reactor tanks
- The positive filtration achieved with MBR provides consistent high-quality discharge
- The out-of-basin design allows for better demonstration of the technology
- The membrane construction allows for high removal of bacteria and virus – demonstrated 5-log removal of bacteria and 4-log removal of virus.
The plant design is for two trains with the first train presently installed. The design flow of this plant is 75,000 gallons per day, and due to internal water uses, such as screen flushing, the net output of the final plant when fully installed will be 104,350 gallons per day. The recycled water is used for irrigation and toilet flushing within the requirements of California’s Title 22 Regulations.
Plant automation design allows for periodic operator attention only when equipment maintenance or chemical refilling is required.
Following treatment in the MBR, the effluent is further treated using ozone followed by UV for ozone destruction and chlorine addition at 1 mg/L to ensure no re-growth in the final effluent.
Due to the proximity of City Hall and the fact that the plant is in a highly populated area, a state-of-the-art odor control system was installed. With the standard Dynatec design odor control is not typically required.
This is the first facility in California to use external MBR membranes, ozone and chlorination for water recycling. The use of decentralized wastewater treatment facilities is increasing and the City of Anaheim is in the forefront of this.
Contact Dynatec Systems today to discuss your wastewater reuse project.
https://www.dynatecsystems.com/industries/sanitary-wastewater/
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. 
Recovery and reuse systems have been provided by Dynatec Systems to many industries. The ability to recover and reuse water has many benefits.
- Saving on water costs
- Saving on wastewater disposal charges
- Decreased environmental impact
- Protection from regulatory changes
- Decrease dependence on water provider/source
- Ability to expand without affecting water demand
- Overcome water scarcity issues
- Consistently high-quality for water reuse
Ultrafiltration (UF), Membrane Bioreactor (MBR), Nanofiltration (NF) and Reverse Osmosis (RO) are employed by Dynatec for water reuse projects. Water recovery and water 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
Recovery and reuse systems provided by Dynatec Systems:
- Resorts, hotels, and retirement homes
- Golf courses
- Automotive companies
- Food and beverage companies
- Apartment buildings
- Landfills
- Mines
- Metal finishing plants
- Aerospace companies
For more information about wastewater reuse, contact us today.
https://www.dynatecsystems.com/technologies/recovery-and-reuse/
PFAS Removal from wastewater
Per- and polyfluoroalkyl substances, or PFAS, is a group of thousands of synthetic chemicals that were used for decades in the manufacturing of many consumer goods like waterproof clothing, non-stick pans, stain resistant fabrics, food packaging, and in industries like paper and cardboard manufacturing, metal plating, wire manufacturing, plastic manufacturing, and many other applications.
While providing desired characteristics to the many products in which they were used, PFAS chemicals have been tied to various negative health effects. Also of concern is the fact that they are very stable and break down very slowly in nature. PFAS chemicals are found in the environment and in the bloodstreams of people all over the world.
Dynatec has provided systems to remove PFAS from industrial wastewater to customers across the country and has dozens of systems in operation. While there are other technologies in various stages of development, there are two proven technologies for removing PFAS from industrial wastewater: carbon and reverse osmosis (RO). Dynatec has used both granular activated carbon (GAC) and RO for PFAS removal and we can help with the selection of treatment technology for a given application.
Landfills are a major accumulation location for PFAS as most of the PFAS laden products ultimately end up there. As the leader in landfill leachate treatment, Dynatec Systems has vast experience in treating complex, high strength wastewater and removing PFAS from these wastewater streams. With discharge limits shrinking across the country to single digit parts per trillion (ppt) for some of the most common PFAS compounds like PFOS and PFOA, most of our customers have non-detect levels of nearly all of the tested PFAS chemicals, even where the raw wastewater or leachate has individual PFAS compound concentrations of 3,000 to 5,000ppt or more.
We can design a system to meet any discharge requirement.
Please contact us today to discuss your PFAS removal needs.
MBR Conversion – Pharmaceutical Company
A pharmaceutical firm suffered from frequent upsets to their existing treatment process. The existing conventional aerobic biological system followed by a gravity clarifier, led to discharge noncompliance.
Dynatec completed bench top treatability studies and pilot studies to confirm the best method to improve performance. Adding ultrafilters as part of the conversion to a Membrane Bioreactor (MBR) was the best course of action.
MBR Conversion – Pharmaceutical Company
The wastewater stream was high in organic content (BOD, COD), and suspended solids (TSS). The MBR conversion, using a Dynatec ultrafiltration system allowed the customer to run the biological system at high mixed liquor concentrations without concern for settling characteristics. The higher mixed liquor concentration and longer sludge age proved to be successful in consistently reducing BOD and COD into compliance.
The system was designed to treat nearly 300,000 gallons per day. The COD was consistently reduced to 300 – 500 mg/l from 14,000 mg/l while BOD was reduced to non-detect.
The upgraded system handled variable loads in terms of organic load and flow rates. It consistently delivered high-quality effluent with less operator attention than their previous system. Additionally, the customer no longer faced fines for exceeding discharge limits for organics and solids.
Dynatec completed the process design, provided the equipment, and performed the installation. Existing tanks and aeration were utilized, keeping the conversion cost to less than any alternative.
Dynatec Systems industry-leading tubular ultrafiltration (UF) system can be used to treat a broad range of industrial wastewater by separating insoluble components from waste streams. As a cost effective and simple solution for separating insoluble components and colloidal contaminants from a waste stream. Wastewater ultrafiltration offers significant advantages over conventional separation. It is a useful process that does not require chemicals or much space to separate insoluble contaminants.
Contact Dynatec to discuss your wastewater treatment needs.
https://www.dynatecsystems.com/technologies/membrane-bioreactors/mbr-conversion-r…pgrade-solutions/
Flexographic Ink Wastewater Treatment
FLEXOGRAPHIC INK WASTEWATER TREATMENT
A corrugated box manufacturer utilized conventional batch physical/chemical treatment for processing wastewater generated from the clean-up of flexographic ink wastewater. The system consisted of chemical coagulation followed by conventional flocculation. A deep bed filter was used to clarify and dewater the waste. The system was operator intensive and generated lots of sludge for disposal.
Solution:
A tubular non-clog membrane filtration system was installed to process the waste stream. The waste was pH adjusted to optimize the removal of copper and zinc. The waste was circulated through the filter for discharge and the contaminants were concentrated. The
concentrate of contaminants was reduced to 2% of the original volume. The system reliably produces high quality water with very little operator involvement.
Simple Mechanical Process:
The membrane filter is a mechanical system that allows clean water to pass through the filter while contaminants are rejected and returned to the waste holding tank. There are no chemicals required other than that which may be necessary for pH adjustment. Also, there is no sludge generated by the process. The system simply separates the contaminants from the water, whereas a chemical treatment system generates copious amounts of sludge that must be dewatered and disposed.
Unattended Operation:
Since this process is completely mechanical and not dependent upon chemical feed and the coagulation and flocculation process, the only operational requirement is to clean the membrane filters periodically. This is a simple process that involves less than one half hour of an operator’s time. A chemical treatment system requires ongoing adjustments of the chemical feed pumps, make-up of the chemical feeds, operation of the dewatering system and control calibration and adjustment. The chemical system tasks require continual attention on a daily basis, whereas the membrane filtration system requires attention only for cleaning.
Consistently High Quality Water:
The membrane filter forms a positive barrier to the flow of contaminants, producing continuous high-quality water without operator attention. The membrane system is not affected by variability of the waste stream. The purified water is suitable for reuse or sewer discharge.
Low Disposal Cost:
The mechanical separation produced by the membrane filter does not generate sludge. It simply separates the contaminants from the water and leaves those contaminants in a liquid phase. The amount of liquid concentrate is normally very small and it is, therefore, cost-effective to dispose of that concentrate as a liquid waste and thereby preclude the need to run and operate a solidification and de-watering operation.
Low Operating Cost:
The membrane filtration system will be the least expensive treatment system to operate. The cost of operation of a membrane filtration system is much less than a chemical treatment system.
Contact Dynatec Systems today to discuss your wastewater solution today.