Dynatec News

Reuse Water with MBR

High-quality discharge and reuse from MBR

Dynatec Provides Reuse Water for Cereals Plant

Dynatec Systems, Inc. has installed a water reuse system in a major cereals plant in Georgia.

The complete treatment system, consisting of a membrane bioreactor (MBR), followed by reverse osmosis (RO), provides a net savings to the plant of more than $3,000 per day in water and sewer charges after deduction of the plant operating costs. The water is reused for cleaning, in scrubbers and in boilers.

Previously, the facility discharged all the wastewater to a municipal treatment plant at a rate of up to 0.5 mgd, and paid both volume and load charges

Quality Criteria

Since the plant produces a food product, ultimate water quality is vital. The two-stage membrane system (MBR + RO) and final sterilization with ultraviolet (UV) treatment provides the quality assurance that plant management requires. In addition, the membranes used in the MBR system are external to the aeration basin and are tubular. This type of membrane is much less susceptible to failure than the immersed type.

System Design

After a review of the available treatment options, the owners of the facility chose the Dynatec bioreactor option. This process combines aerated biological treatment with an out-of-basin ultrafiltration (UF) system. In combination with reverse osmosis treatment, Dynatec was able to provide the client with the necessary assurances that the water quality would not be compromised, and that the water would be suitable for process purposes, such as boiler feed water.

Dynatec’s design consisted of the following components:

• Internally fed rotary screen
• 500,000 gallon above-ground stainless steel equalization tank with jet aeration and duplex PD blowers
• 500,000 gallon above-ground stainless steel aerated biological reactor with jet aeration and triplex PD blowers
• Four membrane skids with a common automated CIP (clean-in-place) system, one skid operates in standby mode
• Reverse Osmosis system
• Final UV (ultraviolet) sterilization
• Sludge dewatering decanter centrifuge
• Completely integrated control system managing all system functions

System Advantages:

• The system provides many advantages for the operators and owners.
• Redundant membrane skids for ease of operation and cleaning.
• Simple automated cleaning operations with membranes in place.
• High mixed liquor concentration ensures the lowest possible sludge production, and requires smallest possible footprint.
• Simple, low maintenance system.
• Long-lasting tubular membranes with 0.03 μm membrane, ensuring removal of bacteria and viruses.

Results:

The system has produced high quality water for reuse. Consistently, the water quality from the MBR has been as follows:

State Award
The facility received an award from the State of Georgia Association of Water Professionals presented an award to the
facility for Outstanding Operation of a facility in the category of Water Conservation.

Project Conclusion:
The project was completed on time and within budget, and has exceeded the estimates that were initially made for cost savings.
The Dynatec system has proved to be reliable and efficient, and has exceeded the customer’s requirements, based on the initial
projected performance.

Technology Benefits

Biological treatment using Membrane Bioreactors provides several benefits:

• Consistently high-quality water
• No upsets, since the membrane provides a positive barrier to bacteria and viruses
• Smaller footprint than conventional systems, due to operation at high levels of mixed liquor
• Better system kinetics than conventional systems, due to long sludge age
• Complete removal of bacteria and viruses
• High quality water for reuse
• Dynatec Out-of-Basin MBR Systems:
• Operators never come in contact with biomass
• Easy clean-in-place without moving membranes

https://www.dynatecsystems.com/industries/food-and-beverage/

ZLD wastewater treatment system

ZLD wastewater treatment system for a food processing company was provided by Dynatec. The primary treatment is provided by a tubular membrane bioreactor (MBR) followed by reverse osmosis (RO). Membrane bioreactor permeate is reused for cooling tower make up. Reverse osmosis permeate is re-used for high-quality users and reverse osmosis (RO) reject is used for irrigation.

ZLD wastewater treatment system

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

Membrane Bioreactors

Membrane bioreactors offer a unique and effective solution for the treatment and reuse of industrial wastewater in industries such as landfills, automotive, aerostructures, distilleries and dairies. Our industry-leading designs and innovation also deliver superior performance for sanitary wastewater and biological nutrient removal applications.

The MBR configuration has proven to be optimal for treatment of many industrial wastewaters when treatment efficiency is an important consideration.

The MBR is the ideal bioreactor configuration for treatment of organic or inorganic contaminants present in industrial wastewaters. MBRs operate at a higher efficiency while achieving consistent design performance objectives. This makes MBR a more cost effective method of treatment when performance and tank requirements are considered.

Bioreactor systems such as the conventional activated sludge system, sequencing batch reactor system and trickling filters are typically designed for operation at a lower volumetric removal rate, requiring larger tanks and more space. These conventional systems often experience upsets that inhibit settling and therefore require much more operator attention than a membrane bioreactor.

The MBR has proven to be optimal for treatment of many industrial wastewaters because it is less susceptible to upsets. The MBR’s performance is not affected by changes in sludge settleability like the conventional systems, making MBR a wise choice for industrial systems that have more difficult to treat waste streams. Dynatec has over 45 years experience in dealing with difficult to treat industrial wastewaters using membrane filtration.

For more information on zero-liquid discharge (ZLD) wastewater treatment systems, please contact us today.

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

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.

Dynatec specializes in extensive industrial 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.

Industrial 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

RO and NF Technology

RO uses a membrane that is semi-permeable, allowing the fluid that is being purified to pass through it, while rejecting the contaminants that remain. Most NF and RO systems are operated in crossflow to allow the membrane to continually clean itself.

Integrated clean-in-place (CIP)

The membrane skid has an integrated CIP system on the skid. This is especially important for wastewater reuse systems because the cleaning frequency of the skid is often higher than in other RO applications. With an integrated CIP system, cleaning is fast and easy, minimizing th

e operator’s time.

Contact Dynatec to discuss your wastewater application.

https://www.dynatecsystems.com/industries/landfill-leachate-treatment/

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 wastewater treatment utilizing membrane systems that range from selective separation of product to wastewater treatment and reuse.  Dynatec Systems has provided many different chemical wastewater solutions.

Chemical Manufacturer Wastewater Treatment Solutions

• Ultrafiltration (UF), Nanofiltration (NF) and Reverse Osmosis (RO) for selective separation of product for recovery
• MBR biological treatment
• Wastewater reuse with MBR
• Conversions of existing systems to MBR
  • Expand existing bioreactor treatment capacity
  • Improve discharge quality
  • Produce water for reuse
  • Reduce surcharge
• High purity reuse with MBR and RO

Contaminants Removed

• Organics
• Inorganic solids
• Phenol
• Solvents
• Oils
• Acids

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

Dynatec specializes in extensive RO and 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

RO 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.

RO/NF 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

RO and NF Technology

RO uses a membrane that is semi-permeable, allowing the fluid that is being purified to pass through it, while rejecting the contaminants that remain. Most NF and RO systems are operated in crossflow to allow the membrane to continually clean itself.

Integrated clean-in-place (CIP)

The membrane skid has an integrated CIP system on the skid. This is especially important for wastewater reuse systems because the cleaning frequency of the skid is often higher than in other RO applications. With an integrated CIP system, cleaning is fast and easy, minimizing the operator’s time.

Tubular Configuration:

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

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

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/

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/

Ultrafiltration for egg processing

Ultrafiltration for egg processing

High protein content from the egg causes the BOD of wastewater from an egg processing plant to be high. The conventional approach is to treat the wastewater biologically, either aerobically or anaerobically. Both systems are expensive both to purchase and operate.

Solution

Tubular Ultrafiltration alone will reduce the BOD of the wastewater from an egg processing plant 94% on average. This simple filtration process mechanically separates the egg from the water and produces a concentrate of egg and water that can be processed by a renderer inexpensively.

97% of the filtered water purified by the Ultrafilter can be discharged to sewer.

Benefits

• Lower capital cost compared to the alternatives
• Much lower operating costs compared to the alternatives
• Simple mechanical system
• Less space required
• Permeate acceptable for Municipal sewer discharge
• Low cost for disposal of residual egg concentrate

Contact Dynatec Systems today to discuss your wastewater solution

https://www.dynatecsystems.com/industries/food-and-beverage/egg-processing

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 using ultrafilter (UF) for your application, please contact us today.