Dynatec News

Wastewater Treatment System

Wastewater treatment system for an aerostructures manufacturer provided by Dynatec Systems.  The system removes heavy metals and produces water for reuse.  Dynatec Systems also provided a double pass reverse osmosis (RO) system to produce low conductivity/low Total Dissolved Solids (TDS) water (less than 3mg/l) for the metal finishing process in lieu of a deionizing system. The RO system was much more cost effective in processing the relatively high TDS water supply.

Dynatec specializes in extensive reverse osmosis (RO) membrane systems and nanofiltration (NF) membrane systems to remove soluble components of wastewater that may not have been removed by primary treatment. In most cases, the purified water can be reused.

RO is capable of rejecting soluble constituents of aqueous streams, such as:

• Bacteria
• Salts
• Sugars
• Proteins
• A wide range of organics and colors
• Improves the color, taste and properties of the fluid

This process is commonly used to purify water and remove salts and other impurities. It can be used to purify fluids such as ethanol, which will pass through the reverse osmosis membrane, while rejecting other ions and contaminants from passing.

Reverse Osmosis/Nanofiltration systems

The most common use for reverse osmosis is in purifying water. It is used to produce water that meets the most demanding specifications. This differs significantly from other RO systems that are often only designed to treat potable water. Our system is specifically designed to accommodate:

• Minimize reject volume
• Variable characteristics
• Minimize fouling

For more information on a wastewater treatment system to remove heavy metals and produce water for reuse, please contact us today.

https://www.dynatecsystems.com/technologies/membrane-technologies/reverse-osmosis-membrane-systems-nanofiltration-membrane-systems/

Textile biological treatment system

A textile biological treatment system needed to upgrade the performance of their existing wastewater treatment system. They wanted to reuse the majority of their wastewater.  This created the need for a robust system that will produce purified water for reuse.  Dynatec was selected to provide the ultrafiltration (UF) components of the MBR.  Out-of-basin membranes were the ideal choice.

Membranes consistently produce high-quality effluent.  The presence of pigments were problematic for other alternatives.  The Dynatec MBR UF system was pilot tested and demonstrated consistent performance providing the high-quality permeate required.

The MBR effluent, now free of suspended solids and most of the organic load, is then processed through a RO system for further purification.  The Dynatec MBR system, using tubular out-of-basin membranes, permits operation at high MLSS and produces lower chemical oxygen demand (COD) results thereby reducing the organic fouling at the downstream RO system. 

The system capacity more than doubled employing existing aeration tanks with an upgrade to the aeration.  Qualitative treatment results also improved.  The project cost was less than the cost to expand the plant as a conventional biological plant with the addition of another bioreactor and clarifier.

Textile biological treatment system

Textile wastewater treatment systems have been provided by Dynatec Systems for numerous  facilities. The treatment method chosen depends greatly on the specific characteristics of a plant’s wastewater and the discharge requirements or wastewater reuse applications within the plant.

Textile Biological Treatment Systems Technology Benefits

• Consistent high-quality water
• Easy maintenance avoids labor costs and regulations
• Minimal operator intervention required
• Reduced sludge disposal costs
• Brine recovery saves on processing cost
• Simple mechanical process

Textile Wastewater Treatment Systems Solutions

• Separation of specific components in the wastewater
• Ultrafiltration (UF) for pigment separation
• Ultrafiltration (UF) for size separation and reuse
• Membrane Bioreactor (MBR) for wastewater treatment and discharge
• Membrane Bioreactor (MBR) and Reverse Osmosis (RO) for wastewater purification and reuse

Contaminants Removed:

• Heavy metals
• Suspended solids
• Biochemical Oxygen Demand (BOD)
• Phosphorous
• Colloidal material
• Pigments
• Chemical Oxygen Demand (COD)
• Inorganic solids separation

Ultrafiltration offers the following advantages over conventional separation:

• No chemical required
• Very little labor required
• Simple mechanical process
• Less sludge
• Ability to concentrate the retentate for beneficial use
• Less space required
• Overall lower operating costs

Tubular Configuration:

• Higher permeate rate
• Lower rates of fouling
• Higher concentration of retentate
• Easier to clean
• Longer membrane life
• Low operating cost

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

https://www.dynatecsystems.com/technologies/membrane-technologies/ultrafiltration-systems/

Ultrafilter for Membrane Bioreactor

Existing biological system converted

The Dynatec out-of-basin membrane configuration provided for optimization of both biological and membrane systems.

Contaminants Removed

• Biochemical Oxygen Demand (BOD)
• Total Suspended Solids (TSS)
• Chemical Oxygen Demand (COD)
• Phosphorous
• Ammonia
• Fat, Oil and Grease (FOG)

For more information about an existing biological system converted to a membrane bioreactor, please contact us today.

https://www.dynatecsystems.com/technologies/membrane-bioreactors/mbr-conversion-r…pgrade-solutions/ ‎

Contract Service – DBOOM

A contract service – (DBOOM) system owned and operated by Dynatec has now been in operation for 28 years. The system was provided to the customer, a manufacturer of bearings, on a Design, Build, Own, Operate, Maintain (DBOOM) basis. Dynatec designed and installed the system 28 years ago and has been operating and maintaining it since. The customer pays Dynatec a few cents per gallon of wastewater treated. The DBOOM arrangement has been an attractive option to several customers over the years. It allows them to achieve the wastewater treatment goals without a capital expenditure and without operating and maintenance responsibility. Another Dynatec system has been successfully operating on a DBOOM basis at a large automotive company’s stamping plant for 20 years.

Design-Build-Own-Operate-Maintain complete wastewater treatment system solutions offers the assurance of a well-run operation with little risk and no capital required. 

Complete Wastewater Solutions

Since 1978, Dynatec has supplied complete wastewater treatment systems for industrial applications and in that time, we have successfully installed over a thousand systems. Since 1993, we have provided DBOOM solutions that are completely designed, built, owned, operated and maintained by Dynatec.

Contract Service (DBOOM) benefits:

Little Risk

Get the assurance you need for a well-run and well-operated system. Offering minimal risk with great convenience to the customer. Dynatec owns, operates and maintains the equipment, supplying complete wastewater treatment systems on a contract basis. Each contract is tailored to the owner’s unique requirements.

Cost-effective

Our contract service agreements offer a reliable means of both reducing and fixing costs.  This allows our clients to accurately predict operating costs and provide the option for purchase of the system at the end of the contract term.
Compensation, in the form of monthly payments, is based on the amount of water treated, purified and discharged to sewer or reused. The per-gallon charge fixes the total cost for processing the waste stream.

Minimal Liability

With minimal operator attention required, a locally-employed Dynatec technician will attend to the system on a daily basis to check for proper functioning, the need for service or maintenance and water quality.

Your Dynatec technician covers all attention, care and maintenance required by the system to ensure compliance with sewer discharge standards. Contaminants removed are disposed of through an approved and licensed disposal firm.

Contract Service – DBOOM project begins the same way all of our projects start. First, we obtain thorough information that helps us characterize your waste stream and the treatment requirements. Once treatability work is performed, we develop a system design and proposal. At that time, the terms of the contract can be negotiated. Dynatec can confirm the project requirements, and implement on-site pilot testing, when necessary.

Contract Service – (DBOOM)

• No risk
• No capital employed in non-performing assets
• No need to operate or maintain equipment
• Assurance of a well-run and well-operated system
• Significant cost savings
• If waste is presently being hauled to a commercial waste treatment facility, this program will help to considerably reduce costs.
• Costs fixed for the term of the contract
• Lower environmental liability

For more information about Dynatec Systems’ (DBOOM) Design-Build-Own-Operate-Maintain services, please contact us to discuss your opportunity.

https://www.dynatecsystems.com/engineered-installed-wastewater-treatment-and-recovery-plants/design-build-own-operate-and-maintain-dboom-solutions/

Dairy Converts System to MBR

A dairy converts an existing biological system to a membrane bioreactor (MBR). The converted plant has the ability to process wastewater at the rate of 475,000 gallons per day.

The conversion provided the ability to increase the treatment rate and at the same time improve the quality of the treated water. The system operated at a higher concentration of mixed liquor in the bioreactor and thereby increase the throughput capacity of the existing bioreactor and improves the quality of the treated water (0.03 micron membrane allows less bacteria and virus to penetrate the membrane surface) that is discharged.

The Dynatec “out of bioreactor” membrane configuration provided for optimization of both biological and membrane systems. Dynatec’s membrane system decoupled the membrane filtration and biological treatment in a way that allowed for optimization of both the solids liquid separation and the biological system design. The system is capable of operating with MLSS as high as 25,000 mg/L and this has maximized the operator flexibility in plant operations to achieve optimum performance. The positive recirculation through the membrane system minimizes fouling and reduces operator attention.

The amount of space required for the membrane system was small and therefore the system was easily added because of the flexibility in locating the membrane system. The system did not need to be next to or close to the bioreactor. The higher system membrane flux (permeate rate) meant that fewer membranes were required. The simple design required less ancillary equipment and operation at high MLSS meant that no additional tanks were required.

Dynatec’s membrane systems draws on our many years of experience to provide a cost effective, simple system that outperforms other systems, especially with difficult to treat waste streams.

Dynatec’s membrane system was selected in part because the overall capital cost was lower than alternative solutions and because the conversion was principally centered on the addition of the membrane system which was inexpensive to install and the location did not need to be close to the existing bioreactor.

Another reason for the selection of Dynatec by the dairy converts existing system to MBR was because the membrane systems are completely enclosed which minimizes maintenance and provides a safe, clean environment for operators.  The operators were not exposed to fumes and noxious gases.

The system was designed for remote access on any device with a web browser enabling the operator to review system performance and make changes without a site visit.

The unique operation of the membrane system makes it the right solution for difficult to treat wastewater applications such as dairy wastewater. The membrane system operates using tubular membranes in series with a recirculation flow that continuously scours the walls of the membrane surface.  This prevents the buildup of solids on the membrane surface.  The elimination of the solids buildup on the membrane surface results in high flux rates and consistent, dependable operation even in difficult applications where the solids do not filter well.

Contact Dynatec to discuss your wastewater needs.

https://www.dynatecsystems.com/technologies/membrane-bioreactors/mbr-conversion-r…pgrade-solutions/ ‎

Wastewater Reuse – Phosphate Mine

Mining operations can produce a large amount of wastewater in the form of spent liquor that requires treatment. The wastewater stream has a high concentration of contaminants that need to be separated from the water before it can be discharged or reused. Dynatec has provided a system to a phosphate mining operation that treats five million gallons of wastewater per day. The customer was motivated to put a treatment/reuse system to separate a portion of the compounds in the wastewater for reuse. Also, the desired water quality for discharge met requirements for reuse of several water users in the plant.

Dynatec was asked to conduct a pilot to study the feasibility of using membrane technology to purify the wastewater so that it could be reused in mining operations at the site. After several months of piloting, Dynatec was commissioned to supply five ultrafiltration skids, each capable of producing one million gallons per day of permeate. The ultrafilters were a part of the reuse system that also includes nanofiltration and reverse osmosis to produce water and product for reuse.

Due to the highly saturated wastewater stream, the pH of the wastewater was maintained at 1.8 s.u. to keep specific contaminants from precipitating in the membrane systems. The ultrafilters have successfully operated at this pH for over 10 years and their life span has not been negatively impacted by the nature of the wastewater.

The high strength spent liquor is processed through a series of membranes from UF to NF to RO. The customer has found reuse applications for reject and permeate from the membrane systems. The final system has alleviated concerns of future environmental infractions and has saved the customer money.

Contact Dynatec Systems to discuss your wastewater solution.

https://www.dynatecsystems.com/technologies/recovery-and-reuse/

Ultrafiltration Membrane System

Automotive connectors manufacturer of quick connectors for transfer of engine oil cooling fluids was in need of a wastewater treatment system to address oil and grease and heavy metal contaminants in their discharge. Based on understanding of the waste stream and ability to provide a cost effective solution, Dynatec was selected to provide a system that would produce effluent that reliably met the sewer discharge requirements.  By using a combination of free oil separation and an ultrafiltration membrane system, in addition to removing all of the suspended solids, the Dynatec supplied system consistently provides effluent meeting discharge requirements.

Automotive Connectors Manufacturer Contaminants removed:

• Biochemical oxygen demand (BOD)
• Oil/grease
• Suspended solids
• Chemical oxygen demand (COD)
• Zinc
• Chrome

Dynatec Systems industry-leading tubular ultrafiltration (UF) system is 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 UF offers significant advantages over conventional separation. It is a useful process that does not require chemicals or much space to separate insoluble contaminants.

UF is a pressure-driven process that removes the following from wastewater and other solutions:

• Emulsified oils
• Metal hydroxides
• Colloids
• Emulsions
• Dispersed material
• Suspended solids
• Other large molecular-weight materials

Ultrafiltration systems are also capable of concentrating:

• Bacteria
• Some proteins
• Some dyes
• Colloidal or emulsified components

Ultrafiltration systems excels at the clarification of solutions containing:

• Suspended solids
• Bacteria
• High concentrations of macromolecules including:
  • Oil and water
  • Fruit juice
  • Milk
  • Whey
  • Electro-coat paints
  • Pharmaceuticals
  • Poly-vinyl alcohol and indigo
  • Potable water
  • Tertiary wastewater

Ultrafiltration offers the following advantages over conventional separation:

• No chemical required
• Very little labor required
• Simple mechanical process
• Less sludge
• Ability to concentrate the retentate for beneficial use
• Less space required
• Overall lower operating costs

Tubular Configuration:

• Higher permeate rate
• Lower rates of fouling
• Higher concentration of retentate
• Easier to clean
• Longer membrane life
• Low operating cost

For more information on wastewater treatment systems to address oil and grease and heavy metal contaminants, please contact us today.

https://www.dynatecsystems.com/industries/manufacturing-wastewater-treatment/industrial-oily-wastewater-treatment/

Automotive Parts Manufacturer

An automotive parts manufacturer was in need of a system to process oily waste water. An ultrafiltration (UF) system was selected based upon its ability to consistently meet the discharge requirements without chemicals and limited operator involvement. This ultrafiltration (UF) system removes oil and reduces zinc in compliance with discharge requirements.

Ultrafiltration excels at the clarification of solutions containing suspended solids, bacteria, and high concentrations of macromolecules, including oil this making this an excellent solution to this problem.

Automotive Parts Manufacturer Contaminants Removed

• Biochemical Oxygen Demand (BOD)
• Oil and Grease (O&G)
• Suspended solids
• Zinc
• Lead

Dynatec Systems industry-leading tubular ultrafiltration (UF) system is 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 UF offers significant advantages over conventional separation. It is a useful process that does not require chemicals or much space to separate insoluble contaminants.

UF is a pressure-driven process that removes the following from wastewater and other solutions:

• Emulsified oils
• Metal hydroxides
• Colloids
• Emulsions
• Dispersed material
• Suspended solids
• Other large molecular-weight materials

Ultrafiltration systems are also capable of concentrating:

• Bacteria
• Some proteins
• Some dyes
• Colloidal or emulsified components

Ultrafiltration systems excels at the clarification of solutions containing:

• Suspended solids
• Bacteria
• High concentrations of macromolecules including:
  • Oil and water
  • Fruit juice
  • Milk
  • Whey
  • Electro-coat paints
  • Pharmaceuticals
  • Poly-vinyl alcohol and indigo
  • Potable water
  • Tertiary wastewater

Ultrafiltration offers the following advantages over conventional separation:

• No chemical required
• Very little labor required
• Simple mechanical process
• Less sludge
• Ability to concentrate the retentate for beneficial use
• Less space required
• Overall lower operating costs

Tubular Configuration:

• Higher permeate rate
• Lower rates of fouling
• Higher concentration of retentate
• Easier to clean
• Longer membrane life
• Low operating cost

For more information on ultrafiltration for the removal of oils and grease, please contact us today.

https://www.dynatecsystems.com/technologies/membrane-technologies/ultrafiltration-systems/

Paint Manufacturer Reuses Latex

A paint manufacturer engaged Dynatec to provide a system to separate latex from wastewater and reuse it in the production of paint

The Problem

The company was using a chemically assisted, rotary drum vacuum pre-coat filter that was expensive to operate and created a lot of sludge which was expensive to dispose.

The Solution

The white paint wastewater was segregated from the colors, and processed separately. The concentrate of white latex solids were used in the manufacture of new white paint.

The paint solids from the colored paints can be concentrated to as high as 20% (typical paint contains between 45% and 55% solids) using wide channel ultrafiltration. The paint solids are concentrated and reused to make a grey paint. The water can be discharged to sewer, since it contains no solids, or it can be reused as wash water.

Special circulation pumps are also used to handle the high solids loadings.

Return on investment

The return on investment was high. The latex from the white paint wastewater is reused in the production process for manufacture of new paint. The paint solids from the colored paint wastewater is recovered as a saleable low quality paint product. The cost for disposal of the solids removed by the old chemical treatment system has been reduced by 90%. The wastewater from both processes is discharged to sewer.

Significant Savings:

 No sludge

 Beneficial use for latex

 Water quality for discharge is better

 Much less operator time

 No chemicals

Ultrafiltration excels at the clarification of solutions containing:

 Suspended solids

 Bacteria

 High concentrations of macromolecules including:

 Oil and water

 Fruit juice

 Milk

 Latex

 Whey

 Electro-coat paints

 Pharmaceuticals

 Poly-vinyl alcohol

 Potable water

 Tertiary wastewater

 Some proteins

 Some dyes

 Oils

 Colloidal or emulsified components

Contact Dynatec Systems today to discuss your wastewater solution!

https://www.dynatecsystems.com/technologies/membrane-technologies/ultrafiltration-systems/