Tank Truck Wash Water
A tanker truck operator built a new operations terminal part of which contains a wash facility to wash the interiors of trucks and the exterior of the tankers and tractors. The operation is a contract hauler so a wide variety of liquids will end up in the wastewater.
The facility obtained a sewer discharge permit that had restrictive oil and grease and metals limits but also had a daily discharge volume limit of 7,000 gallons.
Among the commodities transported are oil products, sugar, chemicals, acid, and caustic, as well as many other organic products. The system design, therefore, had to accommodate all these potential contaminants in the water.
The system design includes free oil separation, pH control and final treatment using ultrafiltration (UF). This treatment was designed to treat the wastewater to meet the sewer discharge limits despite variations in the waste stream.
Water having had the free oil, suspended solids, and emulsified oils removed and having had the pH controlled is suitable for use as wash and first rinse water in the tank washing operations. This, therefore, became part of the system design to conserve water and to enable the facility to meet the sewer volume discharge limitation. Because this was a new facility, there was not an opportunity to complete treatability studies on the wastewater. Dynatec Systems prior experience in similar/like applications served as the basis of design.
Tank Truck Wash Water Ultrafiltration
The ultrafilter is configured in a crossflow (tangential) flow process, a membrane pore size of 0.07 micron. It is used to reject colloidal and emulsified components in water. A high rate of flow across the membrane is maintained to cause turbulence. This, in turn, prevents fouling of the membranes.
For many waste applications like this one, a tubular membrane is specified to prevent the possibility of plugging of the membrane element and to concentrate the contaminants to a high concentration.
Tank Truck Wash Water Results
The system continues to meet the demanding discharge requirements. About 50% of the water produced is reused for wash and first rinse, both for the interiors of the tankers and for the exteriors of the vehicles.
The system is simple to operate and maintain. Variations in the quality of water being fed to the system caused by different chemicals being cleaned from the tankers does not cause variations in the quality of discharge.
Contact Dynatec Systems today to discuss your wastewater application.
https://www.dynatecsystems.com/technologies/membrane-technologies/ultrafiltration-systems/
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/
MBR Discharge and Reuse
High quality discharge and reuse from MBR – Cereal Plant
Since the plant produces a food product, ultimate water quality was vital. The two-stage membrane system (MBR + RO) and final sterilization with ultraviolet (UV) treatment provided the quality assurance that plant management required. 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.
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.
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 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
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 wastewater treatment systems. MBRs operate at a higher efficiency while achieving consistent design performance objectives. This makes MBR a more cost effective method of industrial wastewater 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 wastewater treatment systems 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 Systems has over 42 years experience in dealing with difficult to treat industrial wastewaters using membrane filtration.
Contact Dynatec Systems today to discuss your wastewater solution.
https://www.dynatecsystems.com/industries/food-and-beverage/cereal/
Upgrades using existing assets
Upgrades using existing assets
When discharge regulations tighten, the need for water reuse grows, or wastewater volumes increase, existing Sequencing Batch Reactor (SBR) systems often become inadequate. In order to provide a solution with low capital cost in part by reusing existing assets, existing SBR plants can be converted to Membrane Bioreactors (MBR). This can usually be done by adding an out-of-basin tubular ultrafilter (UF) to the process. Using a Dynatec out-of-basin UF as part of an SBR to MBR conversion is the most cost-effective and easy to implement way to:
- Improve biological system performance
- Expand capacity
- Handle increase in strength of waste
- Mitigate upsets
- Reduce operator time
- Achieve consistent performance
Dynatec has used existing assets from SBR systems to convert to an MBR at many site including at landfills, food and beverage plants, chemical manufacturing, and automotive manufacturing facilities.
The industrial MBR is the ideal bioreactor configuration for treatment of organic or inorganic contaminants present in industrial wastewaters. MBR’s operate at a higher efficiency while achieving consistent design performance objectives. This makes MBR a more cost effective method of industrial wastewater treatment when performance and tank requirements are considered.
Industrial Membrane Bioreactors Benefits:
- Higher flux
- Lower costs
- Better membranes
- Improved permeate quality
- Less operator attention and maintenance
Applications
Dynatec’s industrial MBR is the ideal biological system for industrial wastewater treatment. It is designed to handle high strength wastewater containing high concentrations of:
- Biochemical Oxygen Demand (BOD)
- Chemical Oxygen Demand (COD)
- Oil & Grease (FOG)
- Volatiles
- Metals
- Ammonia
- Nitrate
- Inorganic
The performance is not affected by changes in sludge settleability like the conventional systems, making it the wise choice for industrial wastewater treatment systems that have difficult-to-treat waste streams. Dynatec’s MBRs can effectively handle industrial wastewater streams that would otherwise be toxic or inhibitory to other biological treatment systems.
Backed by decades of experience with MBRs, Dynatec has developed many unique process solutions necessary for industrial wastewater treatment applications such as:
- Landfill leachate
- Hazardous landfill leachate with metals removal
- Automotive manufacturing wastewater
- Food manufacturing wastewater
- Titanium processing wastewater
Contact Dynatec Systems today to discuss your wastewater solution.
Chemical Manufacturer Wastewater Treatment
A chemical manufacturer issued a PO for a new wastewater treatment system from Dynatec. Our customer is in the process of a major plant expansion and needed to meet new, stricter discharge limits. The wastewater is high in oil and grease, BOD, and COD. The new system will consist of an ultrafiltration system followed by a membrane bioreactor (MBR). The performance of this system was proven over several months of piloting. The results confirmed the selection of UF followed by MBR. The BOD in the permeate was regularly non-detect, down from as high as 40,000ppm in the raw wastewater. All other discharge limits were easily met.
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.
- 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
To discuss your wastewater treatment solution, please contact us today.
Landfill Leachate Treatment Expansion
Dynatec just shipped two new Ultrafiltration systems for a landfill leachate treatment expansion project. These skids are part of an expansion at an existing
leachate treatment plant. The existing Dynatec system treats 250,000 gallons per day. This expansion will allow them to filter 500,000gpd on average. The primary target contaminants at the landfill are heavy metals. The existing UF system has allowed the landfill to successfully reach their discharge limits for metals. Due to this success, they have contracted Dynatec as the leachate production has increased.
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
https://www.dynatecsystems.com/industries/landfill-leachate-treatment/
Contact Dynatec for your landfill leachate treatment solution today.
Chemical plant wastewater treatment
Chemical plant wastewater treatment was failing to meet discharge limits, installed a Dynatec UF system to separate emulsified fats, oils, and grease (FOG) from their permeate. The raw wastewater has more than 2,000ppm of emulsified FOG with peaks much higher at times. The system consists of four UF units and related components. The system currently treats 66gpm, but all 4 units are expandable. The permeate is free of FOG and is acceptable for discharge.
https://www.dynatecsystems.com/technologies/membrane-technologies/ultrafiltration-systems/
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 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
To discuss your wastewater treatment solution, please contact us today.
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.
Contract Service – DBOOM
A contract service – (DBOOM) system owned and operated by Dynatec has now been in operation for 25 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 25 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.
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 the operator’s time.
Contact Dynatec to discuss your wastewater application.
https://www.dynatecsystems.com/industries/landfill-leachate-treatment/